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Uncover the best deals on Boston to St Louis flights by comparing fares from hundreds of airlines and agencies.
Good to Know: Cheapest and Fastest BOS - STL Flights
Useful information for finding best airline tickets from Logan International to Lambert St Louis International on your next trip.
Cheapest Round Trip Flight
$373
Southwest Airlines
• nonstop
• 4h 10m
Aug 13 – Aug 21
The cheapest round trip flight from Boston to St Louis (BOS-STL-BOS) is currently $373
Cheapest Direct Flight
$116
American Airlines
• nonstop
• 3h 28m
Aug 11
The cheapest nonstop flight from Boston to St Louis (BOS-STL) is currently $116
Fastest Flight
3h 24m
The fastest nonstop flight from Boston to St Louis (BOS-STL) takes 3h 24m
Top Airlines Flying from Boston to St Louis
Latest Flight Deals from Boston (BOS) to St Louis (STL)
Compare and book low fare round-trip air tickets from Boston to St Louis. Ideal for travelers with confirmed return itineraries.
Aug 13 - Aug 21, Economy
Boston → St Louis
4h 10m
5:00 AM - 6:50 AM • nonstop
Boston → St Louis
3h 55m
1:30 PM - 5:05 PM • nonstop
Southwest Airlines
Aug 13 - Aug 21, Economy
Boston → St Louis
10h 45m
5:50 AM - 11:35 AM • 1 stop
Boston → St Louis
3h 55m
1:30 PM - 5:05 PM • nonstop
Southwest Airlines
Aug 13 - Aug 21, Economy
Boston → St Louis
7h 20m
12:40 PM - 4:20 PM • 1 stop
Boston → St Louis
3h 55m
1:30 PM - 5:05 PM • nonstop
Southwest Airlines
Aug 13 - Aug 21, Economy
Boston → St Louis
9h 5m
5:25 AM - 10:10 AM • 1 stop
Boston → St Louis
3h 50m
7:00 PM - 10:30 PM • nonstop
Southwest Airlines
Aug 13 - Aug 21, Economy
Boston → St Louis
8h 44m
5:30 AM - 9:54 AM • 1 stop
Boston → St Louis
7h 15m
6:30 AM - 12:05 PM • 1 stop
Delta Airlines
Looking for the fastest way to St Louis? These direct flight options from BOS to STL offer both convenience and value—no layovers, just straight to your destination.
Aug 11 - Aug 17, Economy
Boston → St Louis
3h 28m
5:22 PM - 7:30 PM • nonstop
Boston → St Louis
5h 45m
9:44 AM - 1:29 PM • nonstop
American Airlines
Aug 13 - Aug 21, Economy
Boston → St Louis
3h 24m
7:09 AM - 9:13 AM • nonstop
Boston → St Louis
5h 45m
9:44 AM - 1:29 PM • nonstop
American Airlines
Aug 13 - Aug 21, Economy
Boston → St Louis
3h 28m
5:22 PM - 7:30 PM • nonstop
Boston → St Louis
5h 35m
1:30 PM - 5:05 PM • nonstop
American Airlines
Aug 13 - Aug 21, Economy
Boston → St Louis
4h 10m
5:00 AM - 6:50 AM • nonstop
Boston → St Louis
3h 55m
1:30 PM - 5:05 PM • nonstop
Southwest Airlines
Aug 13 - Aug 21, Economy
Boston → St Louis
4h 15m
5:50 PM - 7:45 PM • nonstop
Boston → St Louis
3h 55m
7:00 AM - 10:35 AM • nonstop
Southwest Airlines
FAQs on Boston to St Louis Flights
What are the airports in Boston?
BOS
What’s the most popular airline flying from BOS to STL?
The most popular airline flying from Boston to St Louis are
Can I fly from BOS to STL non-stop?
Yes, you can fly BOS to STL non-stop on
Which airlines fly nonstop between Boston and St Louis?
The non-stop flights between Boston and St Louis are .
What’s the earliest departure time from BOS to STL Airport?
The earliest flight leaves BOS at 5:00 am and lands in STL - Lambert St Louis International
What are the airports in St Louis?
STL
Can I make changes to my Boston to St Louis flight tickets or cancel them on FareLeaders.com?
No. We are an airfare comparison site. All the tickets are booked by the travel agent offering the flight deal and any changes or cancellations to be made are directly done directly by them or the airlines.
Can I cancel my flight tickets from BOS to STL?
Read the fare rules of the Boston to St Louis air tickets booked. Some airlines allow you to cancel the tickets within a stipulated time period with a cancellation fee.
Which airline alliances offer flights from Boston and St Louis?
operate flights between Boston and St Louis
How long does a flight from Boston to St Louis take?
It takes approximately 3 hour to fly non-stop from BOS to STL, which is 1046.69 miles by air.
Which airlines provide the cheapest flights from Boston (BOS) to St Louis (STL) ?
In the past couple of days, the cheapest tickets to STL from BOS were found on WN : USD 383
Do I need a passport to fly between BOS and STL?
No
What’s the latest departure time from BOS to STL ?
The last flight leaves BOS at 5:50 pm
Boston (BOS) to St Louis (STL): Airport Information
| Origin Airport | Logan International, Boston, US |
| Destination Airport | Lambert St Louis International , St Louis, US |
| Distance | 1047 miles |
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