ORD to STL

Chicago to St Louis Flights from US$79 + Up to 20% Off

Compare fares, departure times, stops and baggage details for this route, then open the full search when you are ready to check current availability and complete booking.

Live fares from the airlines No hidden charges Transparent cancellation policy 24×7 booking support
Cheapest fareUS$79Delta Air Lines
Fastest1h 14mgate to gate
Options today61flights on this route

Live flights for Tue, 18 Aug 2026

Review fares, stops, timings and baggage. Use Search or View all flights for the complete search result.

Showing flight options for the selected travel date.
Currency: USD
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Delta Air Lines
Delta Air Lines
DL-2039
06:59
2026-08-18
CHICAGO (ORD)United StatesO Hare International
6H :15 M
1 Stop
DTW · 3h 13m Detroit (DTW), United States
13:14
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$76
$79
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-4456
08:48
2026-08-18
CHICAGO (ORD)United StatesO Hare International
4H :26 M
1 Stop
DTW · 1h 17m Detroit (DTW), United States
13:14
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$76
$79
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1716
13:59
2026-08-18
CHICAGO (ORD)United StatesO Hare International
6H :43 M
1 Stop
DTW · 3h 36m Detroit (DTW), United States
20:42
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$76
$79
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
American Airlines
American Airlines
AA-3568
07:00
2026-08-18
CHICAGO (ORD)United StatesO Hare International
1H :24 M
Non Stop
08:24
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$91
$94
Non Refundable 1 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
United Airlines
United Airlines
UA-2000
14:07
2026-08-18
CHICAGO (ORD)United StatesO Hare International
1H :31 M
Non Stop
15:38
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$91
$94
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
United Airlines
United Airlines
UA-1032
20:29
2026-08-18
CHICAGO (ORD)United StatesO Hare International
1H :31 M
Non Stop
22:00
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$91
$94
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
American Airlines
American Airlines
AA-3069
23:00
2026-08-18
CHICAGO (ORD)United StatesO Hare International
1H :14 M
Non Stop
00:14
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$91
$94
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
Delta Air Lines
Delta Air Lines
DL-2028
06:00
2026-08-18
CHICAGO (ORD)United StatesO Hare International
17H :26 M
1 Stop
MSP · 14h 24m Minneapolis (MSP), United States
23:26
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$114
$118
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1567
12:29
2026-08-18
CHICAGO (ORD)United StatesO Hare International
10H :57 M
1 Stop
MSP · 7h 42m Minneapolis (MSP), United States
23:26
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$114
$118
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1567
12:29
2026-08-18
CHICAGO (ORD)United StatesO Hare International
20H :08 M
1 Stop
MSP · 16h 43m Minneapolis (MSP), United States
08:37
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$114
$118
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1567
12:29
2026-08-18
CHICAGO (ORD)United StatesO Hare International
21H :54 M
1 Stop
MSP · 18h 38m Minneapolis (MSP), United States
10:23
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$114
$118
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
United Airlines
United Airlines
UA-4479
12:58
2026-08-18
CHICAGO (ORD)United StatesO Hare International
1H :30 M
Non Stop
14:28
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$155
$161
Non Refundable 2 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1264
05:30
2026-08-18
CHICAGO (ORD)United StatesO Hare International
9H :03 M
1 Stop
ATL · 5h 27m Atlanta (ATL), United States
14:33
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1264
05:30
2026-08-18
CHICAGO (ORD)United StatesO Hare International
10H :47 M
1 Stop
ATL · 7h 05m Atlanta (ATL), United States
16:17
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1247
06:40
2026-08-18
CHICAGO (ORD)United StatesO Hare International
7H :53 M
1 Stop
ATL · 4h 14m Atlanta (ATL), United States
14:33
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1247
06:40
2026-08-18
CHICAGO (ORD)United StatesO Hare International
9H :37 M
1 Stop
ATL · 5h 52m Atlanta (ATL), United States
16:17
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2426
08:05
2026-08-18
CHICAGO (ORD)United StatesO Hare International
8H :12 M
1 Stop
ATL · 4h 29m Atlanta (ATL), United States
16:17
2026-08-18
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1178
10:33
2026-08-18
CHICAGO (ORD)United StatesO Hare International
21H :35 M
1 Stop
ATL · 17h 52m Atlanta (ATL), United States
08:08
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1178
10:33
2026-08-18
CHICAGO (ORD)United StatesO Hare International
23H :21 M
1 Stop
ATL · 19h 37m Atlanta (ATL), United States
09:54
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2894
13:50
2026-08-18
CHICAGO (ORD)United StatesO Hare International
18H :18 M
1 Stop
ATL · 14h 31m Atlanta (ATL), United States
08:08
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2894
13:50
2026-08-18
CHICAGO (ORD)United StatesO Hare International
20H :04 M
1 Stop
ATL · 16h 16m Atlanta (ATL), United States
09:54
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2894
13:50
2026-08-18
CHICAGO (ORD)United StatesO Hare International
21H :56 M
1 Stop
ATL · 18h 06m Atlanta (ATL), United States
11:46
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces

Recommended hotels in St Louis

Stay options near the arrival city for the same travel date.

Search hotels
Best Western Plus Louisa
2.0Very GoodLive availability

Best Western Plus Louisa

- 18199 US-23, Louisa, KY 41230 ,

Free WiFiACBreakfast
Room availability is checked live
$107per night+ taxes if applicable
View Rooms

1 Night • 2 Star

Delta Air Lines
Delta Air Lines
DL-1477
15:25
2026-08-18
CHICAGO (ORD)United StatesO Hare International
16H :43 M
1 Stop
ATL · 12h 51m Atlanta (ATL), United States
08:08
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1477
15:25
2026-08-18
CHICAGO (ORD)United StatesO Hare International
18H :29 M
1 Stop
ATL · 14h 36m Atlanta (ATL), United States
09:54
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1477
15:25
2026-08-18
CHICAGO (ORD)United StatesO Hare International
20H :21 M
1 Stop
ATL · 16h 26m Atlanta (ATL), United States
11:46
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2740
18:25
2026-08-18
CHICAGO (ORD)United StatesO Hare International
13H :43 M
1 Stop
ATL · 9h 47m Atlanta (ATL), United States
08:08
2026-08-19
St Louis (STL)United StatesLambert-St Louis Intl
FLYX20 Applied
$169
$174
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
No flights match the selected filters. Clear filters or open full search.

Fare highlights

Selected flight highlights for 18 Aug 2026.

Open full search
Lowest fare $79 Delta Air Lines 06:59
Earliest departure $174 Delta Air Lines 05:30
Shortest duration $94 American Airlines 23:00
Night 00:00-05:59 $174 Delta Air Lines at 05:30
Morning 06:00-11:59 $79 Delta Air Lines at 06:59
Afternoon 12:00-17:59 $79 Delta Air Lines at 13:59
Evening 18:00-23:59 $94 United Airlines at 20:29

Chicago to St Louis route details

Chicago (ORD)

O Hare International

USA

St Louis (STL)

Lambert-St Louis Intl

USA

Flights shown for 18 Aug 2026. View all flights opens the complete search result.

Chicago to St Louis flight booking guide

Quick answers to the most common questions about flying Chicago to St Louis.

Are direct Chicago to St Louis flights available?

Yes. The current route snapshot includes 13 non-stop options. Availability can change by travel date, so recheck before payment.

Best time or month to book

There is no permanently cheapest month because airline inventory changes continuously. As a practical starting point, compare nearby dates and begin checking international trips 6–12 weeks before departure; peak holidays may need earlier booking.

Cheapest days for this route

Among the dates currently shown, Tuesday has the lowest displayed fare at $79. This is a live snapshot, not a guaranteed weekly rule.

Baggage rules

Allowance is fare-specific, not just airline-specific. Current cards show examples such as 0 Pieces check-in baggage. Open the fare choices and verify cabin/check-in baggage before continuing.

Cancellation and refund explanation

Refundable and non-refundable labels are shown on each card. Exact airline cancellation charges, no-show rules and refund timelines are verified for the selected fare before booking; promotional discounts and applicable charges are adjusted from any refund.

Secure booking support

FlyX rechecks the live fare before payment, shows the payable amount and provides 24×7 booking support. Payment, refund, cancellation and help links are available in the footer.

Airlines flying from Chicago to St Louis

Compare fares, stops, baggage and refundability across the airlines flying this route.

Delta Air Lines Chicago to St Louis flights

from $7948 flights

Delta Air Lines cheap flights Chicago to St Louis

Fares start from $79 on this route.

Chicago to St Louis Delta Air Lines flight schedule

48 departures — compare timings in the list above.

United Airlines Chicago to St Louis flights

from $948 flights

United Airlines cheap flights Chicago to St Louis

Fares start from $94 on this route.

Chicago to St Louis direct United Airlines flights

8 non-stop flights currently available.

Chicago to St Louis United Airlines flight schedule

8 departures — compare timings in the list above.

American Airlines Chicago to St Louis flights

from $945 flights

American Airlines cheap flights Chicago to St Louis

Fares start from $94 on this route.

Chicago to St Louis direct American Airlines flights

5 non-stop flights currently available.

Chicago to St Louis American Airlines flight schedule

5 departures — compare timings in the list above.

Chicago to St Louis flight details

Cheapest fareUS$79 · Tue, 18 Aug
Fastest flight duration1h 14m · American Airlines
First departure of the day05:30 · Delta Air Lines
Last departure of the day23:00 · American Airlines
Flights currently available61
Direct / non-stop options13
Popular airlines on this routeDelta Air Lines, United Airlines, American Airlines
Airport codesChicago–ORD, St Louis–STL

Fares and timings are indicative — the exact price is confirmed with the airline when you search.

Chicago to St Louis flight schedule, timing and fares

Chicago to St Louis flight schedule and timing

Around 61 flights operate on this route, including 13 non-stop options. Departures run through the day — the first flight leaves around 05:30 and the last around 23:00. The fastest flight takes about 1h 14m.

Morning vs evening Chicago–St Louis fares

Lowest fare by departure window: Morning from $79, Afternoon from $79, Evening from $94, Night from $174. Early-morning and late-night flights are often cheaper than peak daytime slots.

What is today’s lowest airfare from Chicago to St Louis?

The lowest fare we are currently showing is US$79, on a Tuesday departure. Airfares change through the day, so search your dates for the exact price.

Should I book one-way or round-trip for Chicago to St Louis?

Domestic fares are usually priced per leg, so two one-ways often cost about the same as a round-trip and keep your return date flexible. Round-trip is worth choosing when you want a single PNR for both legs, and eligible coupons like FLYX20 apply either way.

Which airlines should I consider for Chicago to St Louis?

Delta Air Lines (48 flights, from $79), United Airlines (8 flights, from $94), American Airlines (5 flights, from $94). Compare fare type, baggage and refundability — the cheapest airline is not always the best value for your dates.

Web check-in for your Chicago to St Louis flight

Most airlines open web check-in 24–48 hours before departure on their own website or app using your PNR. Checking in early lets you pick better seats free of charge on many fares; FlyX also links every booking’s airline check-in page from Web Check-in.

How to book a Chicago to St Louis flight on FlyX

  1. 1
    Enter your travel details

    Choose one-way or round-trip, pick your dates and travellers in the search form above.

  2. 2
    Compare live results

    Sort or filter the Chicago–St Louis results by price, departure time, stops and airline.

  3. 3
    Open the fare choices

    Check baggage allowance and refundability for each fare type before continuing.

  4. 4
    Review the final price

    FlyX rechecks the live fare with the airline; any eligible coupon is applied automatically.

  5. 5
    Pay securely

    UPI, cards, net banking and wallets supported; your e-ticket is emailed within minutes.

Chicago and St Louis travel guide

About Chicago

Chicago, the most populous city in Illinois and the third most populous in the United States, is a bustling metropolis known for its iconic skyline, vibrant arts scene, and diverse neighborhoods. Often referred to as the Windy City, Chicago offers a blend of architectural marvels, cultural landmarks, and a dynamic urban atmosphere. From world-class museums to sandy beaches along Lake Michigan, Chicago is a city that captivates visitors with its charm and energy.

Read more about Chicago

Airports

Chicago is served by two major airports:
• O'Hare International Airport (ORD) - Located approximately 18 miles northwest of downtown Chicago
• Chicago Midway International Airport (MDW) - Situated about 10 miles southwest of the city center

Hotels and Restaurants

Chicago offers a wide range of accommodation options to suit every budget:
• The Ritz-Carlton Chicago - Luxury hotel with stunning views of Lake Michigan
• The Drake Hotel - Historic hotel with elegant rooms and top-notch service
• Hotel Lincoln - Boutique hotel with a rooftop bar and quirky decor
• HI Chicago Hostel - Budget-friendly option with modern amenities

When it comes to dining, Chicago is a food lover's paradise:
• Alinea - Renowned for its innovative and artistic dishes
• Lou Malnati's Pizzeria - Famous for its deep-dish pizza
• Girl & the Goat - Popular spot for creative small plates
• Portillo's - Iconic for its Chicago-style hot dogs

Transportation

Getting around Chicago is convenient with various transportation options:
• Chicago Transit Authority (CTA) - Extensive network of buses and 'L' trains
• Metra - Commuter rail system connecting the suburbs to the city
• Taxis and Rideshares - Widely available across the city
• Divvy Bikes - Bike-sharing program with numerous docking stations

Must-See Places

Chicago boasts numerous attractions that should not be missed:
• Millennium Park - Home to the iconic Cloud Gate sculpture (The Bean)
• The Art Institute of Chicago - Houses an impressive collection of artworks
• Navy Pier - Entertainment hub with rides, restaurants, and shops
• Willis Tower Skydeck - Offers breathtaking views from the 103rd floor
• Museum Campus - Includes the Field Museum, Shedd Aquarium, and Adler Planetarium

Climate

Chicago experiences a continental climate with distinct seasons:
• Winter (December to February) - Cold and snowy, ideal for winter sports
• Spring (March to May) - Mild temperatures and blooming flowers
• Summer (June to August) - Warm and humid, perfect for outdoor activities
• Autumn (September to November) - Cool and crisp, great for sightseeing

The best time to visit Chicago is during late spring to early autumn when the weather is pleasant and outdoor events are in full swing. Whether you're exploring its architectural wonders, indulging in its culinary delights, or enjoying its vibrant cultural scene, Chicago promises an unforgettable experience.

Why book your Chicago to St Louis flight with FlyX?

If you are looking for Chicago to St Louis flight tickets at the best possible fare, FlyX keeps the process simple and transparent. Enter your dates and travellers, compare live fares across every major airline on this route, and filter by price, departure time, stops or airline to find the flight that actually fits your plan. Every fare you see is rechecked live with the airline before payment, so the price you approve is the price you pay — no hidden charges added at checkout.

And that is not all — eligible discounts like FLYX20 are applied automatically on the review page, payments run over 256-bit SSL with UPI, cards, net banking and wallets, and our 24x7 support team backs every booking as an IATA-accredited travel company. Refund and cancellation rules are shown clearly for each fare before you pay, and your e-ticket lands in your inbox within minutes. So why wait? Book your Chicago to St Louis flight on FlyX and take off with genuine savings today.

Chicago to St Louis flight offers & coupon codes

Coupon codeOfferMax saving
FLYX20Up to 20% Off on Flights₹1,500

Your discount is applied automatically on the review page before you pay. View full terms.

Frequently asked questions - Chicago to St Louis flights

Is it worth booking Chicago to St Louis flights in advance?

Yes, booking flights in advance helps you secure cheap flight tickets. Comparing air ticket prices 3–4 weeks early gives you better visibility of airline timings, baggage policies, and fare rules before high-demand periods push prices up.

How far is Chicago from St Louis by air?

The flying distance depends on the routing selected by the airline. Live flight cards show duration and stop details for each result.

Are there non-stop flights from ORD to STL?

Non-stop flight availability depends on the airline schedule and departure date. You can filter the live search results by stops to view direct flights, one-stop connections, and transit flights instantly.

Why does the price change after clicking Book Now?

Airline seat inventory and airfares change dynamically in real-time. Selecting 'Book Now' runs a live fare verification check to ensure you get the most accurate price before final booking confirmation.

Can I compare nearby dates?

Yes, you can easily compare flights for nearby dates. Select any date on the date calendar strip to refresh the fares, compare air ticket pricing, and choose the most budget-friendly travel day.

Chicago to St Louis - what to expect when booking

The ORD to STL cards above show selected flight options. Airline prices and seat availability can move quickly, so the final fare is rechecked in the booking flow.

Before you book

Compare nearby dates

The date strip opens the complete search result for the route and selected date.

Use filters

Shortlist by price, stops, departure time and refundable fare preference.

Check fare choices

Continue to Booking opens the verified fare choices, including baggage and refundability, before review.

More flights from Chicago (ORD)24 routes
Chicago → Abu Dhabi
ORD → AUH
Chicago → Akron/canton
ORD → CAK
Chicago → Albany
ORD → ALB
Chicago → Albuquerque
ORD → ABQ
Chicago → Allentown
ORD → ABE
Chicago → Amman
ORD → AMM
Chicago → Amsterdam
ORD → AMS
Chicago → Anchorage
ORD → ANC
Chicago → Appleton
ORD → ATW
Chicago → Fletcher
ORD → AVL
Chicago → Atlanta
ORD → ATL
Chicago → Austin
ORD → AUS
Chicago → Beijing
ORD → PEK
Chicago → Fayetteville
ORD → XNA
Chicago → Berlin
ORD → TXL
Chicago → Birmingham
ORD → BHM
Chicago → Bloomington-Normal
ORD → BMI
Chicago → Boise
ORD → BOI
Chicago → Boston
ORD → BOS
Chicago → Bozeman
ORD → BZN
Chicago → Brussels
ORD → BRU
Chicago → Buffalo Ny
ORD → BUF
Chicago → Burlington
ORD → BRL
Chicago → Burlington
ORD → BTV
More flights from St Louis (STL)23 routes
St Louis → Atlanta
STL → ATL
St Louis → Boston
STL → BOS
St Louis → Burlington
STL → BRL
St Louis → Cancun
STL → CUN
St Louis → Cape Girardeau
STL → CGI
St Louis → Charlotte
STL → CLT
St Louis → Chicago
STL → MDW
St Louis → Covington Ky
STL → CVG
St Louis → Cleveland
STL → CLE
St Louis → Columbus
STL → CMH
St Louis → Dallas
STL → DAL
St Louis → Decatur
STL → DEC
St Louis → Denver
STL → DEN
St Louis → Detroit Mi
STL → DTW
St Louis → Fort Lauderdale
STL → FLL
St Louis → Fort Leonard Wood
STL → TBN
St Louis → Fort Myers
STL → RSW
St Louis → Dallas
STL → DFW
St Louis → Grand Rapids
STL → GRR
St Louis → Houston
STL → IAH
St Louis → Houston
STL → HOU
St Louis → Jonesboro
STL → JBR
St Louis → Kansas City
STL → MCI

Book Cheapest Flight from Chicago to St Louis on FlyX

Securing the best airfare from Chicago to St Louis is all about planning. FlyX's real-time fare tracking system allows you to check flight options and lock in the lowest ticket prices before they rise:

  • Book at least 3-4 weeks in advance to secure the most competitive Chicago to St Louis airfares.
  • Consider traveling mid-week (Tuesdays or Wednesdays) to bypass weekend pricing surges.
  • Early morning or late-night departure flights consistently offer lower fares than afternoon slots.
  • Use our live calendar view above to easily spot fare changes on nearby dates.

Find the Lowest airfare from Chicago to St Louis

Cheapest Fare Fare Date Airline Departure
Lowest Airfare Today $79 18/08/2026 Delta Air Lines 06:59
Cheapest Airfare Within 30 Days $77 29/08/2026 Delta Air Lines 06:59
Cheapest Airfare Within 90 Days $75 28/10/2026 Delta Air Lines 06:59

Book Chicago to St Louis Flight Tickets on FlyX

Planning to fly from Chicago to St Louis? FlyX lets you compare flight rates, airline timings, layovers, and baggage allowances all in one simple list. From quick non-stop routes to flexible connecting options, finding and booking cheap air tickets has never been easier.

Chicago to St Louis Flight Schedule and Timing

Around 61 flights operate on this route, providing plenty of choices for your travel window. The earliest morning flight departs from Chicago at 05:30, while the last night flight leaves at 23:00. Flights depart from O Hare International and land at Lambert-St Louis Intl.

Flight Route Details & Analysis

Flight Details Information
Route Chicago to St Louis
Flight Duration 1H :14 M - 23H :21 M
Airport Codes Chicago - ORD, St Louis - STL
Total Flights Available 61 flights (13 direct)
First Flight Departure Departs at 05:30
Last Flight Departure Departs at 23:00
Early Morning Flights (12 AM - 8 AM) 13 direct/indirect flights
Morning Flights (8 AM - 12 PM) 14 direct/indirect flights
Afternoon Flights (12 PM - 4 PM) 22 direct/indirect flights
Evening Flights (4 PM - 8 PM) 10 direct/indirect flights
Night Flights (8 PM - 12 AM) 2 direct/indirect flights

Airport Information & Terminals

ORD: Chicago airport system. Chicago flights commonly use O'Hare or Midway. O'Hare is a huge hub with rail access; Midway can be easier for some city-side trips. Winter weather and traffic should be part of the booking decision.

STL: St. Louis airport. St. Louis airport transfer should be matched to the exact hotel, suburb or meeting area. Rail can work well for light luggage, but late arrivals, winter weather and family baggage often make a direct cab or booked transfer easier.