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.
STLBOSSat, 03 Oct
Fare checked before payment No hidden charges Transparent cancellation policy 24×7 booking support
Lowest fareUS$293Delta Air Lines
Fastest2h 47mgate to gate
Options found147flights on this route
Find your flightSTL → BOS
Available Flights & Fares
Compare fares, timings and baggage. Pick the flight that suits your trip.
Prices in USD
147 flight options
Fares are checked again before payment.
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La Quinta Inn & Suites by Wyndham Boston Somerville
23 Cummings St SomervilleMassachusetts 02145 ,
Room availability is checked live
$203per night+ taxes if applicable
1 Night • 3 Star
3.0Very GoodLive availability
Arcadian Hotel
1200 Beacon St, Brookline, MA 02446 ,
Room availability is checked live
$216per night+ taxes if applicable
1 Night • 3 Star
AA
American Airlines
AA-4443
08:54
2026-10-03
St Louis (STL)Lambert-St Louis Intl
5H :40 M
1 Stop
LGA
· 1h 35m New York (LGA), United States
15:34
2026-10-03
BOSTON (BOS)Logan International
Non Refundable 5 Seat Left Economy
Check-in: 0 PiecesCabin: 2 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 2 Pieces
$338
Flight DetailsSTL to BOS - 5H :40 M
Baggage InfoCheck-in 0 Pieces - Cabin 2 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
Type
Non Refundable
Fare Type
AirLine Private
1 Pieces 2 Pieces
$402
Flight DetailsSTL to BOS - 5H :40 M
Baggage InfoCheck-in 1 Pieces - Cabin 2 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
United Airlines
UA-4601
09:04
2026-10-03
St Louis (STL)Lambert-St Louis Intl
6H :17 M
1 Stop
ORD
· 2h 06m Chicago (ORD), United States
16:21
2026-10-03
BOSTON (BOS)Logan International
Non Refundable 5 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$338
Flight DetailsSTL to BOS - 6H :17 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
United Airlines
UA-4601
09:04
2026-10-03
St Louis (STL)Lambert-St Louis Intl
7H :33 M
1 Stop
ORD
· 3h 15m Chicago (ORD), United States
17:37
2026-10-03
BOSTON (BOS)Logan International
Non Refundable 5 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$338
Flight DetailsSTL to BOS - 7H :33 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
United Airlines
UA-4517
10:27
2026-10-03
St Louis (STL)Lambert-St Louis Intl
4H :54 M
1 Stop
ORD
· 0h 47m Chicago (ORD), United States
16:21
2026-10-03
BOSTON (BOS)Logan International
Non Refundable 1 Seat Left Economy
Check-in: 0 PiecesCabin: 1 Pieces
Type
Non Refundable
Fare Type
Publish
0 Pieces 1 Pieces
$338
Flight DetailsSTL to BOS - 4H :54 M
Baggage InfoCheck-in 0 Pieces - Cabin 1 Pieces
Fare RulesNon-refundable fare. Final rules are verified before booking.
Up to 120 of 147 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.
Today's Airfare Highlights
Selected flight highlights for 03 Oct 2026.
Lowest fare$293Delta Air Lines06:00
Earliest departure$338American Airlines05:00
Shortest duration$328American Airlines14:35
Night
00:00-05:59
$338American Airlines at 05:00Morning
06:00-11:59
$293Delta Air Lines at 06:00Afternoon
12:00-17:59
$293Delta Air Lines at 13:40Evening
18:00-23:59
$338United Airlines at 19:01
Departure & Arrival Airport Details
St Louis (STL)
Lambert-St Louis Intl
United States
GMT -6
Latitude: 38.748697
Longitude: -90.370003
Boston (BOS)
Logan International
United States
GMT -5
Latitude: 42.36429977
Longitude: -71.00520325
Distance: St Louis (STL), United States to Boston (BOS), United States - 1,680.59 km
Flights shown for 03 Oct 2026. View all flights opens the complete search result.
Fares and hotel rates usually run higher around these dates. Booking earlier — or shifting a day or two — often costs less.
Busiest periods: Summer travel (15 Jun – 31 Aug), Holiday season (18 Dec – 02 Jan).
12OctColumbus DayMonday · in 29 daysPeak
12OctColumbus DayMonday · in 29 daysPeak
12OctIndigenous Peoples' DayMonday · in 29 daysPeak
11NovVeterans DayWednesday · in 59 days
26NovThanksgiving DayThursday · in 74 days
25DecChristmas DayFriday · in 103 days
Fixed-date national holidays. Festivals that follow the lunar calendar shift each year and are not listed here — check the exact date for your travel year.
Compare your journey
How to travel St Louis to Boston
Every option we can actually book for you, compared on price and journey time.
Connecting flight₹27,992Longer — includes a stop146 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 St Louis to Boston
Compare fares, stops, baggage and refundability across the airlines flying this route.
UN
United Airlines Flights
from $33868 flights
Fares from
$338
Non-stop
None in these results
Departures
68 — compare timings in the list above
AM
American Airlines Flights
from $32848 flights
Fares from
$328
Non-stop
1 in these results
Departures
48 — compare timings in the list above
DE
Delta Air Lines Flights
from $29322 flights
Fares from
$293
Non-stop
None in these results
Departures
22 — compare timings in the list above
QA
Qatar Airways Flights
from $1,8998 flights
Fares from
$1,899
Non-stop
None in these results
Departures
8 — compare timings in the list above
Route Overview & Flight Facts
Fastest flight duration
2h 47m · American Airlines
First departure of the day
05:00 · American Airlines
Last departure of the day
19:01 · United Airlines
Options in this snapshot
147
Direct / non-stop options
1
Airport codes
St Louis–STL, Boston–BOS
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
Around 147 flights appear in the dated route snapshot, including 1 non-stop option. Departures run through the day — the first flight leaves around 05:00 and the last around 19:01. The fastest flight takes about 2h 47m.
Morning vs Evening Departure Fares
Lowest fare by departure window: Morning from $293, Afternoon from $293, Night from $338, Evening from $338. 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 update continuously with airline inventory.
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
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2
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Sort or filter the St Louis–Boston results by price, departure time, stops and airline.
3
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4
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5
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Why Book Your Flight with FlyX?
Compare the available St Louis to Boston 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.
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Frequently Asked Questions
Is it worth booking St Louis to Boston 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. Across the dates currently loaded for St Louis to Boston, Saturday shows the lowest fare at $293. That is an observed snapshot for these dates, not a rule that holds every week.
How far is St Louis from Boston by air?
The direct air distance between St Louis (STL) and Boston (BOS) 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 STL to BOS?
Yes. 1 non-stop flight is showing on St Louis to Boston for the dates currently loaded. Use the Stops filter to see only those.
Which airlines fly St Louis to Boston?
United Airlines, American Airlines, Delta Air Lines and Qatar Airways are showing on this route for the dates currently loaded. 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 St Louis to Boston?
The quickest non-stop St Louis to Boston flight currently loaded takes about 2h 47m. Journeys with a stop take longer, since the total includes the layover.
What is the baggage allowance on St Louis to Boston flights?
Allowance is set by the airline and the fare you pick, not by the route. Fares showing right now 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 St Louis to Boston flight fare?
The lowest fare showing on St Louis to Boston for the dates currently loaded is $293. Fares on the same dates run up to $1,899, depending on airline, timing and fare type. Airline pricing moves continuously, so treat this as a dated observation rather than a fixed price.
What time do St Louis to Boston flights depart?
For the dates currently loaded the first departure is around 05:00 and the last is around 19:01, local time at St Louis. 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 STL–BOS, 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.
Last checked .
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.
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.
The STL to BOS 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
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Lowest St Louis to Boston airfare today, in 30 days and in 90 days
Cheapest Fare
Fare
Date
Airline
Departure
Lowest Airfare Today
$293
03/10/2026
Delta Air Lines
06:00
Cheapest Airfare Within 30 Days
$287
13/10/2026
Delta Air Lines
06:00
Cheapest Airfare Within 90 Days
$278
12/12/2026
Delta Air Lines
06:00
Book St Louis to Boston Flight Tickets on FlyX
Planning to fly from St Louis to Boston? 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 Boston Flight Distance, Duration and Time
The aerial distance between St Louis and Boston is approximately 1,681 KM. The flight duration ranges from 2H :47 M up to 53H :45 M depending on whether you book a non-stop flight or a connecting schedule with layovers.
St Louis to Boston Flight Schedule and Timing
Around 147 flights operate on this route, providing plenty of choices for your travel window. The earliest morning flight departs from St Louis at 05:00, while the last night flight leaves at 19:01. Flights depart from Lambert-St Louis Intl and land at Logan International.
Flight Route Details & Analysis
Flight Details
Information
Route
St Louis to Boston
Aerial Distance
1,681 KM
Flight Duration
2H :47 M - 53H :45 M
Airport Codes
St Louis - STL, Boston - BOS
Total Flights Available
147 flights (1 direct)
First Flight Departure
Departs at 05:00
Last Flight Departure
Departs at 19:01
Early Morning Flights (12 AM - 8 AM)
44 direct/indirect flights
Morning Flights (8 AM - 12 PM)
50 direct/indirect flights
Afternoon Flights (12 PM - 4 PM)
29 direct/indirect flights
Evening Flights (4 PM - 8 PM)
24 direct/indirect flights
Night Flights (8 PM - 12 AM)
0 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.
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.
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Lambert-St Louis Intl