Are direct St Louis to Pittsburgh flights available?
Yes. The current route snapshot includes 1 non-stop option. Availability can change by travel date, so recheck before payment.
STL to PIT
St Louis to Pittsburgh Flights from US$119 + 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$119Delta Air Lines
Fastest3h 49mgate to gate
Options today91flights 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
Delta Air Lines
DL-1524
06:00
2026-08-18
St Louis (STL)
Lambert-St Louis Intl
Lambert-St Louis Intl5H :52 M
1 Stop
ATL
· 2h 32m Atlanta (ATL), United States
12:52
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$115
$119
Delta Air Lines
DL-1536
07:00
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl4H :52 M
1 Stop
ATL
· 1h 33m Atlanta (ATL), United States
12:52
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$115
$119
Delta Air Lines
DL-1571
09:15
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl5H :34 M
1 Stop
ATL
· 2h 14m Atlanta (ATL), United States
15:49
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$115
$119
Delta Air Lines
DL-1571
09:15
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl6H :59 M
1 Stop
ATL
· 3h 36m Atlanta (ATL), United States
17:14
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$115
$119
Delta Air Lines
DL-1400
11:00
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl5H :14 M
1 Stop
ATL
· 1h 52m Atlanta (ATL), United States
17:14
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$115
$119
Delta Air Lines
DL-566
12:52
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl6H :38 M
1 Stop
ATL
· 3h 12m Atlanta (ATL), United States
20:30
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$115
$119
Delta Air Lines
DL-1799
17:23
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl6H :13 M
1 Stop
ATL
· 2h 39m Atlanta (ATL), United States
00:36
2026-08-19
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$115
$119
Delta Air Lines
DL-2822
18:25
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl4H :39 M
1 Stop
DTW
· 1h 50m Detroit (DTW), United States
00:04
2026-08-19
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$115
$119
United Airlines
UA-567
08:00
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl4H :15 M
Non Stop
13:15
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$151
$155
American Airlines
AA-4669
06:00
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl4H :44 M
1 Stop
LGA
· 0h 40m New York (LGA), United States
11:44
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
American Airlines
AA-1926
06:00
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl4H :54 M
1 Stop
ORD
· 1h 31m Chicago (ORD), United States
11:54
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
American Airlines
AA-4669
06:00
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl7H :57 M
1 Stop
LGA
· 3h 56m New York (LGA), United States
14:57
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
United Airlines
UA-4570
07:25
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl4H :50 M
1 Stop
ORD
· 1h 35m Chicago (ORD), United States
13:15
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
United Airlines
UA-4570
07:25
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl7H :00 M
1 Stop
ORD
· 3h 46m Chicago (ORD), United States
15:25
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
United Airlines
UA-567
08:00
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl6H :25 M
1 Stop
ORD
· 3h 13m Chicago (ORD), United States
15:25
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
United Airlines
UA-4506
08:40
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl4H :31 M
1 Stop
IAD
· 1h 11m Washington (IAD), United States
14:11
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
United Airlines
UA-4601
08:50
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl5H :35 M
1 Stop
ORD
· 2h 21m Chicago (ORD), United States
15:25
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
American Airlines
AA-4443
09:15
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl4H :42 M
1 Stop
LGA
· 0h 37m New York (LGA), United States
14:57
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
American Airlines
AA-3568
09:32
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl4H :44 M
1 Stop
ORD
· 1h 39m Chicago (ORD), United States
15:16
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
American Airlines
AA-4776
10:44
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl5H :49 M
1 Stop
DCA
· 2h 03m Washington (DCA), United States
17:33
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
United Airlines
UA-2654
12:59
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl5H :12 M
1 Stop
ORD
· 2h 00m Chicago (ORD), United States
19:11
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
United Airlines
UA-2654
12:59
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl6H :48 M
1 Stop
ORD
· 3h 35m Chicago (ORD), United States
20:47
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
Recommended hotels in Pittsburgh
Stay options near the arrival city for the same travel date.
Wyndham Garden Pittsburgh Airport
- 1 Industry Ln, Pittsburgh, PA 15275 ,
Free WiFiACBreakfast
Room availability is checked live
DoubleTree by Hilton Washington Meadow Lands Casino Area
- 340 Racetrack Rd ,
Free WiFiACBreakfast
Room availability is checked live
Hilton Garden Inn Pittsburgh Area Beaver Valley, PA
- 2000 Wagner Rd Ext S, Monaca, PA 15061 ,
Free WiFiACBreakfast
Room availability is checked live
Crowne Plaza Suites Pittsburgh South by IHG
- 164 Fort Couch Road PittsburghPennsylvania 15241 ,
Free WiFiACBreakfast
Room availability is checked live
American Airlines
AA-4259
16:54
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl6H :05 M
1 Stop
ORD
· 2h 42m Chicago (ORD), United States
23:59
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
United Airlines
UA-541
17:30
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl5H :40 M
1 Stop
ORD
· 2h 24m Chicago (ORD), United States
00:10
2026-08-19
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
United Airlines
UA-4616
18:54
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl4H :16 M
1 Stop
ORD
· 0h 55m Chicago (ORD), United States
00:10
2026-08-19
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$155
$160
Delta Air Lines
DL-1626
06:30
2026-08-18
St Louis (STL)Lambert-St Louis Intl
Lambert-St Louis Intl3H :49 M
1 Stop
DTW
· 1h 01m Detroit (DTW), United States
11:19
2026-08-18
Pittsburgh (PIT)Pittsburgh International Airport
Pittsburgh International Airport
FLYX20 Applied
$156
$161
No flights match the selected filters. Clear filters or open full search.
Fare highlights
Selected flight highlights for 18 Aug 2026.
Lowest fare
$119
Delta Air Lines
06:00
Earliest departure
$119
Delta Air Lines
06:00
Shortest duration
$161
Delta Air Lines
06:30
Night
00:00-05:59
No option
Open full search for more
Morning
06:00-11:59
$119
Delta Air Lines at 06:00
Afternoon
12:00-17:59
$119
Delta Air Lines at 12:52
Evening
18:00-23:59
$119
Delta Air Lines at 18:25
St Louis to Pittsburgh flight booking guide
Quick answers to the most common questions about flying St Louis to Pittsburgh.
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 $119. 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 St Louis to Pittsburgh
Compare fares, stops, baggage and refundability across the airlines flying this route.
United Airlines St Louis to Pittsburgh flights
United Airlines cheap flights St Louis to Pittsburgh
Fares start from $155 on this route.
St Louis to Pittsburgh direct United Airlines flights
1 non-stop flight currently available.
St Louis to Pittsburgh United Airlines flight schedule
49 departures — compare timings in the list above.
American Airlines St Louis to Pittsburgh flights
American Airlines cheap flights St Louis to Pittsburgh
Fares start from $160 on this route.
St Louis to Pittsburgh American Airlines flight schedule
26 departures — compare timings in the list above.
Delta Air Lines St Louis to Pittsburgh flights
Delta Air Lines cheap flights St Louis to Pittsburgh
Fares start from $119 on this route.
St Louis to Pittsburgh Delta Air Lines flight schedule
14 departures — compare timings in the list above.
St Louis to Pittsburgh flight details
| Cheapest fare | US$119 · Tue, 18 Aug |
|---|---|
| Fastest flight duration | 3h 49m · Delta Air Lines |
| First departure of the day | 06:00 · Delta Air Lines |
| Last departure of the day | 20:07 · American Airlines |
| Flights currently available | 91 |
| Direct / non-stop options | 1 |
| Popular airlines on this route | United Airlines, American Airlines, Delta Air Lines, Alaska Airlines |
| Airport codes | St Louis–STL, Pittsburgh–PIT |
Fares and timings are indicative — the exact price is confirmed with the airline when you search.
St Louis to Pittsburgh flight schedule, timing and fares
St Louis to Pittsburgh flight schedule and timing
Around 91 flights operate on this route, including 1 non-stop option. Departures run through the day — the first flight leaves around 06:00 and the last around 20:07. The fastest flight takes about 3h 49m.
Morning vs evening St Louis–Pittsburgh fares
Lowest fare by departure window: Morning from $119, Afternoon from $119, Evening from $119. Early-morning and late-night flights are often cheaper than peak daytime slots.
What is today’s lowest airfare from St Louis to Pittsburgh?
The lowest fare we are currently showing is US$119, 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 St Louis to Pittsburgh?
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 St Louis to Pittsburgh?
United Airlines (49 flights, from $155), American Airlines (26 flights, from $160), Delta Air Lines (14 flights, from $119), Alaska Airlines (2 flights, from $616). Compare fare type, baggage and refundability — the cheapest airline is not always the best value for your dates.
Web check-in for your St Louis to Pittsburgh 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 St Louis to Pittsburgh flight on FlyX
- 1Enter your travel details
Choose one-way or round-trip, pick your dates and travellers in the search form above.
- 2Compare live results
Sort or filter the St Louis–Pittsburgh results by price, departure time, stops and airline.
- 3Open the fare choices
Check baggage allowance and refundability for each fare type before continuing.
- 4Review the final price
FlyX rechecks the live fare with the airline; any eligible coupon is applied automatically.
- 5Pay securely
UPI, cards, net banking and wallets supported; your e-ticket is emailed within minutes.
Why book your St Louis to Pittsburgh flight with FlyX?
If you are looking for St Louis to Pittsburgh 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 St Louis to Pittsburgh flight on FlyX and take off with genuine savings today.
St Louis to Pittsburgh flight offers & coupon codes
| Coupon code | Offer | Max saving |
|---|---|---|
| FLYX20 | Up 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 - St Louis to Pittsburgh flights
Is it worth booking St Louis to Pittsburgh 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 St Louis from Pittsburgh by air?
The approximate direct air distance between St Louis (STL) and Pittsburgh (PIT) is 889.08 km. The actual flight duration and route path vary depending on airline schedules and wind conditions.
Are there non-stop flights from STL to PIT?
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.
St Louis to Pittsburgh - what to expect when booking
The STL to PIT cards above show selected flight options. Airline prices and seat availability can move quickly, so the final fare is rechecked in the booking flow.
Approx route distance: 889.08 km.
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.
Book Cheapest Flight from St Louis to Pittsburgh on FlyX
Securing the best airfare from St Louis to Pittsburgh 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 St Louis to Pittsburgh 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 St Louis to Pittsburgh
| Cheapest Fare | Fare | Date | Airline | Departure |
|---|---|---|---|---|
| Lowest Airfare Today | $119 | 18/08/2026 | Delta Air Lines | 06:00 |
| Cheapest Airfare Within 30 Days | $117 | 29/08/2026 | Delta Air Lines | 06:00 |
| Cheapest Airfare Within 90 Days | $113 | 28/10/2026 | Delta Air Lines | 06:00 |
Book St Louis to Pittsburgh Flight Tickets on FlyX
Planning to fly from St Louis to Pittsburgh? 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.
St Louis to Pittsburgh Flight Distance, Duration and Time
The aerial distance between St Louis and Pittsburgh is approximately 889 KM. The flight duration ranges from 3H :49 M up to 27H :14 M depending on whether you book a non-stop flight or a connecting schedule with layovers.
St Louis to Pittsburgh Flight Schedule and Timing
Around 91 flights operate on this route, providing plenty of choices for your travel window. The earliest morning flight departs from St Louis at 06:00, while the last night flight leaves at 20:07. Flights depart from Lambert-St Louis Intl and land at Pittsburgh International Airport.
Flight Route Details & Analysis
| Flight Details | Information |
|---|---|
| Route | St Louis to Pittsburgh |
| Aerial Distance | 889 KM |
| Flight Duration | 3H :49 M - 27H :14 M |
| Airport Codes | St Louis - STL, Pittsburgh - PIT |
| Total Flights Available | 91 flights (1 direct) |
| First Flight Departure | Departs at 06:00 |
| Last Flight Departure | Departs at 20:07 |
| Early Morning Flights (12 AM - 8 AM) | 21 direct/indirect flights |
| Morning Flights (8 AM - 12 PM) | 29 direct/indirect flights |
| Afternoon Flights (12 PM - 4 PM) | 17 direct/indirect flights |
| Evening Flights (4 PM - 8 PM) | 19 direct/indirect flights |
| Night Flights (8 PM - 12 AM) | 5 direct/indirect flights |
Airport Information & Terminals
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.
PIT: Pittsburgh International Airport airport. Pittsburgh International Airport 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.
PIT: Pittsburgh International Airport airport. Pittsburgh International Airport 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.
