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BOS to STL

Boston to St Louis Flights

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.

Fare checked before payment All fees shown upfront Transparent cancellation policy 24×7 booking support
Lowest fare₹19,389Delta Air Lines
Fastest3h 14mgate to gate
Options found124flights on this route
Find your flight BOS STL

Available Flights & Fares

Compare fares, timings and baggage. Pick the flight that suits your trip.

Prices in INR
124 flight options

Fares are checked again before payment.

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Sort by
Delta Air Lines
Delta Air Lines
DL-2242
05:30
2026-10-30
BOSTON (BOS)Logan International
6H :21 M
1 Stop
ATL · 1h 40m Atlanta (ATL), United States
10:51
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1019
05:39
2026-10-30
BOSTON (BOS)Logan International
5H :10 M
1 Stop
DTW · 1h 15m Detroit (DTW), United States
09:49
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-695
06:50
2026-10-30
BOSTON (BOS)Logan International
7H :30 M
1 Stop
ATL · 2h 57m Atlanta (ATL), United States
13:20
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-456
09:05
2026-10-30
BOSTON (BOS)Logan International
5H :15 M
1 Stop
ATL · 0h 42m Atlanta (ATL), United States
13:20
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-456
09:05
2026-10-30
BOSTON (BOS)Logan International
8H :23 M
1 Stop
ATL · 3h 47m Atlanta (ATL), United States
16:28
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1748
09:15
2026-10-30
BOSTON (BOS)Logan International
5H :38 M
1 Stop
DTW · 1h 46m Detroit (DTW), United States
13:53
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1474
10:15
2026-10-30
BOSTON (BOS)Logan International
7H :13 M
1 Stop
ATL · 2h 40m Atlanta (ATL), United States
16:28
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2222
13:05
2026-10-30
BOSTON (BOS)Logan International
5H :14 M
1 Stop
DTW · 1h 22m Detroit (DTW), United States
17:19
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2391
13:57
2026-10-30
BOSTON (BOS)Logan International
5H :18 M
1 Stop
ATL · 0h 47m Atlanta (ATL), United States
18:15
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2391
13:57
2026-10-30
BOSTON (BOS)Logan International
8H :15 M
1 Stop
ATL · 3h 43m Atlanta (ATL), United States
21:12
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-1710
14:59
2026-10-30
BOSTON (BOS)Logan International
7H :13 M
1 Stop
ATL · 2h 42m Atlanta (ATL), United States
21:12
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-2330
16:15
2026-10-30
BOSTON (BOS)Logan International
5H :57 M
1 Stop
ATL · 1h 22m Atlanta (ATL), United States
21:12
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Delta Air Lines
Delta Air Lines
DL-923
08:00
2026-10-30
BOSTON (BOS)Logan International
6H :20 M
1 Stop
ATL · 1h 46m Atlanta (ATL), United States
13:20
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
AA
American Airlines
AA-3546
07:15
2026-10-30
BOSTON (BOS)Logan International
3H :14 M
Non Stop
09:29
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
AA
American Airlines
AA-4512
15:25
2026-10-30
BOSTON (BOS)Logan International
3H :14 M
Non Stop
17:39
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 6 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
AA
American Airlines
AA-3324
05:54
2026-10-30
BOSTON (BOS)Logan International
5H :57 M
1 Stop
ORD · 1h 30m Chicago (ORD), United States
10:51
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
AA
American Airlines
AA-3324
05:54
2026-10-30
BOSTON (BOS)Logan International
8H :06 M
1 Stop
ORD · 3h 30m Chicago (ORD), United States
13:00
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
AA
American Airlines
AA-2159
06:00
2026-10-30
BOSTON (BOS)Logan International
5H :18 M
1 Stop
DCA · 0h 38m Washington (DCA), United States
10:18
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
United Airlines
United Airlines
UA-1414
06:00
2026-10-30
BOSTON (BOS)Logan International
5H :32 M
1 Stop
ORD · 0h 55m Chicago (ORD), United States
10:32
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
AA
American Airlines
AA-1540
06:00
2026-10-30
BOSTON (BOS)Logan International
5H :41 M
1 Stop
PHL · 1h 19m Philadelphia (PHL), United States
10:41
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
United Airlines
United Airlines
UA-1414
06:00
2026-10-30
BOSTON (BOS)Logan International
7H :10 M
1 Stop
ORD · 2h 45m Chicago (ORD), United States
12:10
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
AA
American Airlines
AA-2159
06:00
2026-10-30
BOSTON (BOS)Logan International
7H :46 M
1 Stop
DCA · 3h 22m Washington (DCA), United States
12:46
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces

Recommended hotels in St Louis

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

Search hotels
AA
American Airlines
AA-1509
07:00
2026-10-30
BOSTON (BOS)Logan International
7H :00 M
1 Stop
ORD · 2h 25m Chicago (ORD), United States
13:00
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
United Airlines
United Airlines
UA-1834
07:31
2026-10-30
BOSTON (BOS)Logan International
5H :39 M
1 Stop
ORD · 1h 11m Chicago (ORD), United States
12:10
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 9 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
United Airlines
United Airlines
UA-1834
07:31
2026-10-30
BOSTON (BOS)Logan International
7H :58 M
1 Stop
ORD · 3h 21m Chicago (ORD), United States
14:29
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 4 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
AA
American Airlines
AA-1239
08:23
2026-10-30
BOSTON (BOS)Logan International
5H :37 M
1 Stop
ORD · 1h 00m Chicago (ORD), United States
13:00
2026-10-30
St Louis (STL)Lambert-St Louis Intl
Non Refundable 7 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces

Up to 120 of 124 options on this route. Open the full search to see them all with every filter.

No flights match the selected filters. Clear filters or open full search.

Airfare Highlights

From flights departing on Fri, 30 Oct 2026.

Lowest fare ₹19,389 Delta Air Lines 05:30
Earliest departure ₹19,389 Delta Air Lines 05:30
Shortest duration ₹23,945 American Airlines 07:15
Night 00:00-05:59 ₹19,389 Delta Air Lines at 05:30
Morning 06:00-11:59 ₹19,389 Delta Air Lines at 06:50
Afternoon 12:00-17:59 ₹19,389 Delta Air Lines at 13:05
Evening 18:00-23:59 ₹24,694 American Airlines at 18:16

Departure & Arrival Airport Details

Boston (BOS)

Logan International

United States

GMT -5

Latitude: 42.36429977

Longitude: -71.00520325

St Louis (STL)

Lambert-St Louis Intl

United States

GMT -6

Latitude: 38.748697

Longitude: -90.370003

Distance: Boston (BOS), United States to St Louis (STL), United States - 1,680.59 km
Flights shown for 30 Oct 2026. View all flights opens the complete search result.
Route forecast

Weather in Boston and St Louis

Live forecast for both cities, 12 Oct to 15 Oct.

Departure city

Boston

Thu, 15 Oct
12°CClear skyLow 7°
64% humidity 21 km/h wind
  • Mon18° / 16°
  • Tue17° / 16°
  • Wed16° / 16°
Arrival city

St Louis

Thu, 15 Oct
28°CClear skyLow 20°
72% humidity 12 km/h wind 0.2 mm rain
  • Mon24° / 15°
  • Tue30° / 17°
  • Wed28° / 18°

Forecast data from MET Norway, CC BY 4.0.

Smart travel dates

Holidays and peak dates for St Louis

Fares and hotel rates usually run higher around these dates. Booking earlier or moving your trip by a day or two often costs less.

Busiest periods: Summer travel (15 Jun – 31 Aug), Holiday season (18 Dec – 02 Jan).

  • 12OctColumbus DayMonday
  • 12OctColumbus DayMonday
  • 12OctIndigenous Peoples' DayMonday
  • 11NovVeterans DayWednesday
  • 26NovThanksgiving DayThursday
  • 25DecChristmas DayFriday

Fixed-date national holidays. Festivals that follow the lunar calendar shift each year and are not listed here, so check the exact date for your travel year.

Compare your journey

How to travel Boston to St Louis

Ways to make this trip that you can book on FlyX, compared by price and journey time.

OptionFromJourney timeAvailabilityAction
Non-stop flight Fastest₹23,9453h 14m2 flights
Connecting flight₹19,389Longer, includes a stop122 options

Air distance is about 1,681 km. 5 airlines operate this route.

Road distance and coach duration are approximate estimates from the air distance, not a timetable.

Airlines flying from Boston to St Louis

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

American Airlines Flights

from ₹23,94546 flights
Fares from
₹23,945
Non-stop
2 in these results
Departures
46 in the list above

Delta Air Lines Flights

from ₹19,38934 flights
Fares from
₹19,389
Non-stop
None in these results
Departures
34 in the list above

United Airlines Flights

from ₹24,69433 flights
Fares from
₹24,694
Non-stop
None in these results
Departures
33 in the list above

Qatar Airways Flights

from ₹198,9969 flights
Fares from
₹198,996
Non-stop
None in these results
Departures
9 in the list above

Route Overview & Flight Facts

Fastest flight duration3h 14m · American Airlines
First departure of the day05:30 · Delta Air Lines
Last departure of the day21:40 · Qatar Airways
Flight options found124
Direct / non-stop options2
Airport codesBoston–BOS, St Louis–STL

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

Flight Schedule, Timings & Airfare Insights

Daily Flight Schedule & Travel Duration

The search for Fri, 30 Oct found 124 flight options, 2 of them non-stop. The first flight leaves around 05:30 and the last around 21:40. The fastest flight takes about 3h 14m.

Morning vs Evening Departure Fares

Lowest fare by departure window: Night from ₹19,389, Morning from ₹19,389, Afternoon from ₹19,389, Evening from ₹24,694. These observations do not predict the cheapest departure window on other dates.

Cheapest Airfare & Best Time to Book

Search your travel dates to compare current fares. Prices change with airline seat availability.

One-Way vs Round-Trip Fare Comparison

Compare the complete cost and conditions of both options for your dates. A round-trip can have different fare and change rules from two one-way tickets. One booking may contain multiple airline PNRs; confirm baggage transfer and connection protection for separate tickets.

Online Web Check-In & Boarding Pass

Check the operating airline’s opening time and check-in deadline for each sector. Seat charges and availability depend on your fare. Use the airline reference and the links on Web Check-in.

How to Book Cheap Flights 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 search results

    Sort or filter the Boston–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

    Review the refreshed supplier fare, coupon saving and selected payment-method fee before you pay.

  5. 5
    Pay securely

    UPI, cards, net banking and wallets supported; payment and ticket issuance have separate statuses. If issuance is pending, follow the booking status; the confirmed ticket is sent after issuance.

Why Book Your Flight with FlyX?

Compare the available Boston to St Louis options by total price, stops, baggage and fare conditions. Search your dates for current availability, then review traveller details and the final price before paying.

Payment confirmation and ticket issuance are separate steps. If your booking is awaiting a PNR or ticket, follow its status and contact FlyX support when you need help. Your issued ticket contains the airline reference and itinerary. Change and cancellation charges depend on the purchased fare and any separately disclosed service fee.

Fare checked before paymentCoupon eligibility checkedBooking status trackingBooking support

Exclusive Flight Offers & Promo Coupons

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

Check coupon eligibility and the final discount on the review page before you pay. View full terms.

Frequently Asked Questions

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

There is no guaranteed cheapest booking window. Compare your planned dates early, check nearby dates and consider baggage, connection time and change conditions as well as price. On the Boston to St Louis dates shown on this page, the lowest fare is on a Friday at ₹19,389. This can change from week to week.

How far is Boston from St Louis by air?

The direct air distance between Boston (BOS) and St Louis (STL) is about 1,681 km. Actual flight time varies with the routing the airline files and with winds on the day.

Are there non-stop flights from BOS to STL?

Yes. 2 non-stop flights are listed on this page for Boston to St Louis. Use the Stops filter to see only those.

Which airlines fly Boston to St Louis?

American Airlines, Delta Air Lines, United Airlines and Qatar Airways are listed on this route for the dates shown here. Fares, baggage allowance and refund rules differ by airline and by fare type, so compare the fare conditions and not only the headline price.

How long is the flight from Boston to St Louis?

The quickest non-stop Boston to St Louis flight on this page takes about 3h 14m. Journeys with a stop take longer, since the total includes the layover.

What is the baggage allowance on Boston to St Louis flights?

Allowance is set by the airline and the fare you pick, not by the route. Fares on this page include 2 Pieces. Cabin baggage is counted separately, and the exact allowance for the fare you choose is shown in the fare conditions before payment.

What is the cheapest Boston to St Louis flight fare?

The lowest Boston to St Louis fare on this page is ₹19,389. Fares on the same dates run up to ₹220,681, depending on airline, timing and fare type. Airline prices change often, so search your dates for the current fare.

What time do Boston to St Louis flights depart?

On the dates shown here, the first departure is around 05:30 and the last around 21:40, local time at Boston. Use the departure-time filter on the results above to narrow to a morning, afternoon or evening slot.

Why does the price change after clicking Book Now?

Airline seat inventory and fares change continuously. Selecting Book Now runs a live fare verification with the airline so the price you approve is the price you pay. If it has moved, you see the new figure before any payment.

Before you book this route

Check the airport codes BOS–STL, local departure and arrival dates, and every connecting airport. Connections can have different document and baggage requirements from your final destination.

Where these fares come from

The fares, durations, stops and baggage shown here come from real airline search results for this route. They are examples for the dates on this page, not a full timetable and not a locked price. Run a search to see what is available for your own dates.

Fares shown are for departures on .

Check official travel requirements

Confirm passport, visa and transit rules for your nationality and full itinerary with the relevant government and operating airline. IATA travel-document information explains why requirements vary.

For payment, ticket issuance or a change request, see FlyX support. About FlyX.

United States travel guide for Indian travellers

Planning more than the flight? Our United States guide covers the visa process for Indian passport holders, best time to go, how long to plan for, and which places are worth the days you have. Long-haul city breaks and national parks.

Read the United States travel guide

What to Expect When Booking Your Flight

The BOS 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.

Approx route distance: 1,680.59 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.

Lowest Boston to St Louis airfare, in 30 days and in 90 days

Cheapest FareFareDateAirlineDeparture
Lowest Airfare ₹19,389 30/10/2026 Delta Air Lines 05:30
Cheapest Airfare Within 30 Days ₹19,001 07/11/2026 Delta Air Lines 05:30
Cheapest Airfare Within 90 Days ₹18,420 06/01/2027 Delta Air Lines 05:30

Book Boston to St Louis Flight Tickets on FlyX

FlyX lists each Boston to St Louis flight in these results with its fare, departure time, stops, layover airport and baggage, so you can compare air tickets side by side. To find a cheap ticket, sort by price and check what baggage the fare includes. The fare is checked with the airline again before you pay.

Boston to St Louis Flight Distance, Duration and Time

The aerial distance between Boston and St Louis is about 1,681 KM. In these results, journey times range from 3h 14m to 50h 19m. Flights with a layover take longer because the total includes the connection time.

Boston to St Louis Flight Schedule and Timing

The search for these dates returned 124 flight options, 2 of them non-stop. The first departure from Boston is at 05:30 and the last is at 21:40. Flights leave from Logan International and land at Lambert-St Louis Intl.

Flight Route Details & Analysis

Flight DetailsInformation
RouteBoston to St Louis
Aerial Distance1,681 KM
Flight Duration3h 14m - 50h 19m
Airport CodesBoston - BOS, St Louis - STL
Total Flights Available124 flights2 direct122 with layovers
First Flight DepartureDeparts at 05:30
Last Flight DepartureDeparts at 21:40
Early Morning Flights (12 AM - 8 AM)33 flights1 direct32 with layovers
Morning Flights (8 AM - 12 PM)36 flights0 direct36 with layovers
Afternoon Flights (12 PM - 4 PM)29 flights1 direct28 with layovers
Evening Flights (4 PM - 8 PM)17 flights0 direct17 with layovers
Night Flights (8 PM - 12 AM)9 flights0 direct9 with layovers

Airport Information & Terminals

BOS: Boston Logan International Airport. Logan is close to downtown Boston compared with many US airports. Taxis, airport buses and transit work well, but winter weather and academic move-in dates can change travel ease.

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.

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