Cheap flights from Boston to St. Louis (BOS - STL)

Know your dates, get live prices in seconds:

From
To
Fri 7/1
Tue 7/5
Any month
Compare vs. Cheapflights |
From
To
Depart
Fri 7/1
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime
From
To
Depart
Depart
Time
Anytime

We work with more than 300 partners to bring you better travel deals

The best prices from Boston Logan Intl to Lambert-St Louis are usually found in January or October, booked 25 days in advance, depart on a Tuesday or Saturday and return on a Tuesday

How to find the cheapest flight from
Boston (BOS) to St. Louis (STL)

All the information you need to plan the best BOS to STL flight in 2022: compare Boston to St. Louis flight prices with the expected peak season, weather and rainfall in St. Louis.
BOS - STL
Price
$270 - $439
STL
Temperature
32 - 80.6 °F
STL
Rainfall
2.2 - 4.7 inches

Popular in

June

High demand for flights, 23% potential price rise

Cheapest in

January

Best time to find cheap flights, 20% potential price drop

Round-trip from

$270

From Boston Logan Intl to Lambert-St Louis

One-way from

$153

One-way flight from Boston Logan Intl to Lambert-St Louis

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
How far in advance should I book a flight from Boston to St. Louis?

To save up to 56% on this flight, we recommend booking at least 26 days prior to travel. The price may fluctuate and will likely increase closer to your departure date. Users on Cheapflights have found tickets from Boston to St. Louis from $380 1-2 weeks out and tickets from $556 for flights departing within the next 72 hours.

What is the cheapest day to fly round-trip from Boston to St. Louis?

Saturday flights are found to be more expensive to fly from Boston to St. Louis. This shouldn’t discourage you from searching, as you can still find great deals by being flexible with your options. Use our search form to find deals on tickets to St. Louis.

When is the cheapest time to fly from Boston to St. Louis (BOS - STL)?

It’s typically best to fly out from Boston to St. Louis in the evening. Doing so could potentially save you 27% on the flight price compared to flying in the afternoon, which is usually more expensive.

Cheap flights from Boston to St. Louis in June, July 2022

The best prices found for BOS to STL flights for June, July
20 Jul - 27 Jul
$230pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
12 Jul - 19 Jul
$276pp
BOS
Boston Logan Intl
Multiple Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
Delta
 
1 STOP
BOS
Boston Logan Intl
20 Jul - 27 Jul
$279pp
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Spirit Airlines
   
2 STOPS
BOS
Boston Logan Intl

Boston Logan Intl to St. Louis 2022 flight deals

Cheap flights to St. Louis from Boston found for this year
10 Aug - 16 Aug
$197pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
JetBlue
Non-Stop
BOS
Boston Logan Intl
2 Nov - 5 Nov
$198pp
BOS
Boston Logan Intl
Delta
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Delta
 
1 STOP
BOS
Boston Logan Intl
4 Oct - 28 Oct
$200pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
BOS
Boston Logan Intl

Non-stop flights to St. Louis from Boston

Save time with Boston to St. Louis direct flight deals
10 Aug - 16 Aug
$259pp
BOS
Boston Logan Intl
JetBlue
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
JetBlue
Non-Stop
BOS
Boston Logan Intl
10 Aug - 16 Aug
$289pp
BOS
Boston Logan Intl
JetBlue
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
JetBlue
Non-Stop
BOS
Boston Logan Intl
17 Nov - 20 Nov
$307pp
BOS
Boston Logan Intl
JetBlue
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
JetBlue
Non-Stop
BOS
Boston Logan Intl

Last minute flights from Boston to St. Louis

Late deals on round-trip flights to St. Louis from Boston, departing today and this week
3 Jul - 8 Jul
$357pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
BOS
Boston Logan Intl
3 Jul - 8 Jul
$361pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
JetBlue
Non-Stop
BOS
Boston Logan Intl
3 Jul - 10 Jul
$364pp
BOS
Boston Logan Intl
American Airlines
Non-Stop
STL
Lambert-St Louis
STL
Lambert-St Louis
American Airlines
 
1 STOP
BOS
Boston Logan Intl

One-way flights to Lambert-St Louis from Boston

The cheapest one-way flights from Boston to St. Louis
9:00 am - 1:52 pm
Delta
1 Stop
5h 52m
BOS - STL
Delta
$153
Delta
5:50 am - 7:40 pm
Frontier
1 Stop
14h 50m
BOS - STL
Frontier
$157
Kiwi.com
2:46 am - 8:05 am
American Airlines
1 Stop
6h 19m
BOS - STL
American Airlines

Related info for your journey

Useful info, stats and facts about <span class="emphasized">Boston</span> to <span class="emphasized">St. Louis</span> flights.

Flight FAQs

From Boston to St. Louis

What airports do I use to fly from Boston to St. Louis?

If you wish to fly to St. Louis from Boston, then you need to book flights from Boston Logan Intl to Lambert-St Louis. There are 5 flights from Logan Intl (BOS) to Lambert-St Louis (STL) per day to choose from. Flights to St. Louis from Logan Intl are available from 9 different airlines, which means you should have some options if you want to compare airfare deals. 3h 02m is how long a nonstop flight from Boston to Lambert-St Louis typically takes.

Which airlines flying from Boston Logan Intl to Lambert-St Louis have flexible cancellations due to COVID-19?

Due to the rapidly changing circumstances due to COVID-19, airlines like American Airlines, JetBlue, and Spirit Airlines flying from Boston Logan Intl to Lambert-St Louis have implemented new flexible cancellation policies.

Can I find flights from Boston to St. Louis for under $200 on Cheapflights?

Yes, there are multiple flights from Boston to St. Louis for under $200. The cheapest flight booked recently is on Multiple Airlines for just $197, but on average you can expect to pay $223.

Are there nonstop flights from Boston to St. Louis for under $300 on Cheapflights?

Cheapflights has at least 20 direct flights from Boston to St. Louis under $300. A good price for a nonstop flight from Boston to St. Louis is less than $370.

Are there last-minute flights available from Boston to St. Louis for under $400?

There are currently 20+ open flights from Boston to St. Louis within the next 7 days for less than $400.

What days are nonstop flights available from Boston to St. Louis?

Days when nonstop flights are available for this flight are: Sunday.

How popular is this Boston to St. Louis flight route?

Flights from Boston Logan Intl to Lambert-St Louis have been viewed 48 times in the past calendar month.

How many flights depart from Boston to St. Louis on average per day?

Travelers can expect 1 flight from Boston to St. Louis on average per day.
Morning (6am - Noon) - 100% of flight departures

How long is the flight from Boston to St. Louis?

Airlines like Delta, American Airlines, and JetBlue fly from Boston to St. Louis in about 3h 02m. The time it takes to get you to your destination can typically vary by up to 4h 23m. The distance between Boston and St. Louis is about 1049 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Boston to St. Louis round-trip?

Cheapflights users have booked flights from Boston to St. Louis round-trip from $198. Other airlines that can offer you cheap pricing are American Airlines, from $203, and JetBlue, from $259. Delta is priced at 41% lower than the current average price of a flight leaving 3 months from now.

What are the cheapest airlines to fly from Boston to St. Louis one-way?

The cheapest airline one-way is Delta, with whom users have recently found tickets for as low as $99. However, be on the lookout for offers from American Airlines and Spirit Airlines, as they are both options that can get you from Boston to St. Louis for a low price.

What are the cheapest flights from Boston to St. Louis?

Looking at all options, your cheapest flight can be booked for $115. While the most popular route (Boston Logan Intl - Lambert-St Louis) can be booked for $198 on average our data indicates $776 when flying from Boston to St. Louis.

What are the most popular airlines that fly from Boston to St. Louis?

Consider Major Airline, American Airlines or JetBlue when booking your flight. These represent the most popular airlines when flying from Boston to St. Louis.

What are the most reliable airlines from Boston to St. Louis?

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Boston to St. Louis on time: Southwest (88%), American Airlines (80%), JetBlue (80%).

COVID Restrictions

View COVID Travel Restrictions for St. Louis, MO

Do I need a COVID test to fly to St. Louis from Boston?

Information is based on travel restrictions for travel to Lambert-St Louis within the United States

Most visitors from Boston Logan Intl need to provide a negative COVID-19 test result and/or quarantine to enter Lambert-St Louis.

COVID-19 testing requirements
Visitors from Boston Logan Intl are not required to present a negative COVID-19 PCR test or antigen result upon entering Lambert-St Louis.

Quarantine requirements
Visitors from Boston Logan Intl are not required to quarantine after entering Lambert-St Louis.

Do I need a test to fly back to Boston from St. Louis?

Returning to Boston Logan Intl from Lambert-St Louis

COVID-19 testing requirements
Visitors from Lambert-St Louis are not required to present a negative COVID-19 PCR test or antigen result upon entering Boston Logan Intl.

Quarantine requirements
Visitors from Lambert-St Louis are not required to quarantine after entering Boston Logan Intl.

Hide COVID Travel Restrictions for St. Louis, MO

Alternative routes for Boston to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.

Destination information for St. Louis

Things to know before you go - useful duration and weather info for your trip from Boston to St. Louis.
Flight duration from BOS to STL
2h 53m
Average temperature for June in St. Louis
86.0 °F
Avg rainfall for June in St. Louis
4.1 ″

Airports servicing Boston

Airports servicing St. Louis

Top 6 airlines flying from Boston Logan Intl to Lambert-St Louis

The chart below displays the airlines Cheapflights users traveling from Boston to St. Louis choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
Airline Cheapest Average Flexibility On-time COVID-19 safety
Juneyao Airlines
$12 $22 No cancel fee 66%

We couldn't confirm the COVID-19 safety measures taken by Juneyao Airlines. Please check directly on their website for additional information.

Spirit Airlines
$39 $186 No cancel fee 65%
JetBlue
$138 $336 No cancel fee 62%
United Airlines
$139 $299 No cancel fee 69%
Delta
$149 $374 No cancel fee N/A
American Airlines
$177 $395 No cancel fee 71%

Hourly flight availability from Boston to St. Louis

See what time of day planes typically take off from Boston towards St. Louis.
Afternoon Noon to 6 PM 44% of BOS to STL departures
Morning 6 AM to noon 33% of BOS to STL departures
Early morning Midnight to 6 AM 23% of BOS to STL departures
Evening 6 PM to midnight 0% of BOS to STL departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Boston to St. Louis
See how many times per day planes take to the skies headed from Boston to St. Louis.
Sunday
6 daily flights
Monday
5 daily flights
Tuesday
6 daily flights
Wednesday
6 daily flights
Thursday
6 daily flights
Friday
6 daily flights
Saturday
0 flights
Home North America USA Missouri St. Louis Cheap flights from Boston to St. Louis