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

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The best prices from Lambert-St Louis to Boston Logan Intl are usually found in January or July, booked 55 days in advance, depart on a Thursday or Sunday and return on a Thursday

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

All the information you need to plan the best STL to BOS flight in 2021: compare St. Louis to Boston flight prices with the expected peak season, weather and rainfall in Boston.
STL - BOS
Price
$188 - $284
BOS
Temperature
30.2 - 73.4 °F
BOS
Precipitation
3.1 - 4 inches

Popular in

December

High demand for flights, 22% potential price rise

Cheapest in

January

Best time to find cheap flights, 15% potential price drop

Round-trip from

$188

From Lambert-St Louis to Boston Logan Intl

One-way from

$57

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

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
When is the cheapest time to fly from St. Louis to Boston (STL - BOS)?

A simple way to save on the total cost of your ticket is to fly from St. Louis to Boston at noon. If you’re flexible enough to do this you can expect to save up to 10% on your trip compared to booking a flight in the morning.

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

Friday flights are found to be more expensive to fly from St. Louis to Boston. 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 Boston.

How far in advance should I book a flight from St. Louis to Boston?

To save on the cost of your flight from St. Louis to Boston, book at least 54 days before your planned departure. Booking around this time can save you about 37% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $250 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $307.

Cheap flights from St. Louis to Boston in October, November 2021

The best prices found for STL to BOS flights for October, November
12 Nov - 15 Nov
$77pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
20 Oct - 27 Oct
$82pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
27 Oct - 30 Oct
$85pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

Lambert-St Louis to Boston 2021 flight deals

Cheap flights to Boston from St. Louis found for this year
12 Nov - 15 Nov
$77pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
2 Dec - 4 Dec
$79pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
20 Oct - 27 Oct
$82pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

Non-stop flights to Boston from St. Louis

Save time with St. Louis to Boston direct flight deals
1 Dec - 8 Dec
$157pp
STL
Lambert-St Louis
JetBlue
Non-Stop
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Non-Stop
STL
Lambert-St Louis
3 Nov - 6 Nov
$167pp
STL
Lambert-St Louis
JetBlue
Non-Stop
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Non-Stop
STL
Lambert-St Louis
4 Nov - 8 Nov
$177pp
STL
Lambert-St Louis
JetBlue
Non-Stop
BOS
Boston Logan Intl
BOS
Boston Logan Intl
JetBlue
Non-Stop
STL
Lambert-St Louis

Last minute flights from St. Louis to Boston

Late deals on round-trip flights to Boston from St. Louis, departing today and this week
20 Oct - 27 Oct
$82pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
20 Oct - 27 Oct
$93pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
   
2 STOPS
STL
Lambert-St Louis
23 Oct - 30 Oct
$101pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

One-way flights to Logan Intl from St. Louis

The cheapest one-way flights from St. Louis to Boston
6:15 am - 4:36 am
Frontier
1 Stop
21h 21m
STL - BOS
Frontier
$57
Kiwi.com
12:00 pm - 3:43 pm
JetBlue
Nonstop
2h 43m
STL - BOS
JetBlue
3:03 pm - 5:24 am
Multiple Airlines
2 Stops
13h 21m
STL - BOS
Multiple Airlines
$80
Kiwi.com

Related info for your journey

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

Flight FAQs

From St. Louis to Boston

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

Booking a flight from Lambert-St Louis (STL) to Boston Logan Intl (BOS) is your only option if you wish to fly from St. Louis to Boston. On a typical day, there are 2 flights from Lambert-St Louis to Logan Intl, all of which are around 2h 34m for a nonstop flight. You can also purchase a plane ticket from 6 airlines when you book a flight from Lambert-St Louis to Boston.

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

Some of our airline partners flying from Lambert-St Louis to Boston Logan Intl have new flexible policies in place due to COVID-19. American Airlines, Delta, and United Airlines are some of the carriers where you may find flexible cancellation policies. You can use our site to filter for airlines like American Airlines with this kind of flexibility.

Can I find flights from St. Louis to Boston for under $100 on Cheapflights?

Yes, there are multiple flights from St. Louis to Boston for under $100. The cheapest flight booked recently is on Spirit Airlines for just $77, but on average you can expect to pay $95.

Are there nonstop flights from St. Louis to Boston for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from St. Louis to Boston under $200. A good price for a nonstop flight from St. Louis to Boston is less than $275.

Are there last-minute flights available from St. Louis to Boston for under $100?

There are currently 20+ open flights from St. Louis to Boston within the next 7 days for less than $100.

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

The Lambert-St Louis to Boston Logan Intl flight path was viewed by 51 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

According to our current data, Spirit Airlines ($77), offers the cheapest pricing from St. Louis to Boston. Users have found that Spirit Airlines is 65% cheaper than the other options available to this destination.

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

To fly one-way, consider booking your trip with Spirit Airlines, which is currently one of the cheapest options available, starting at $34. Frontier flights start at $57 while deals on JetBlue start at $79 one-way.

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

While on average a flight from St. Louis to Boston is generally $414, our data shows the cheapest flight currently is $62. When looking at the most popular route, (Lambert-St Louis - Boston Logan Intl), you can expect to pay $77 for that flight.

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

The most popular airlines flying from St. Louis to Boston are Major Airline, American Airlines and Delta. Something to consider prior to booking your flight.

COVID Restrictions

View COVID Travel Restrictions for Boston, MA

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

Information is based on travel restrictions for travel to Boston Logan Intl within the United States

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

COVID-19 testing requirements
Visitors from Lambert-St Louis must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Boston Logan Intl.

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

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

Returning to Lambert-St Louis from Boston Logan Intl

COVID-19 testing requirements
Visitors from Boston Logan Intl must present a negative RT-PCR (NAAT) or Antigen (quick-test) test taken 72 hours before departing to Lambert-St Louis.

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

Hide COVID Travel Restrictions for Boston, MA

Alternative routes for St. Louis to Boston

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

Destination information for Boston

Things to know before you go - useful duration and weather info for your trip from St. Louis to Boston.
Average temperature for October in Boston
64.4 °F
Avg rainfall for October in Boston
3.7 ″

Airports servicing St. Louis

Airports servicing Boston

Top 5 airlines flying from Lambert-St Louis to Boston Logan Intl

The chart below displays the airlines Cheapflights users traveling from St. Louis to Boston 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
United Airlines
$92 $257 No cancel fee 69%
American Airlines
$92 $260 No cancel fee 71%
Delta
$101 $257 No cancel fee N/A
Frontier
$111 $211 No cancel fee 62%
Southwest
$229 $560 No cancel fee 63%

Hourly flight availability from St. Louis to Boston

See what time of day planes typically take off from St. Louis towards Boston.
Morning 6 AM to noon 68% of STL to BOS departures
Evening 6 PM to midnight 31% of STL to BOS departures
Early morning Midnight to 6 AM 1% of STL to BOS departures
Afternoon Noon to 6 PM 0% of STL to BOS departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from St. Louis to Boston
See how many times per day planes take to the skies headed from St. Louis to Boston.
Sunday
0 flights
Monday
3 daily flights
Tuesday
3 daily flights
Wednesday
2 daily flights
Thursday
3 daily flights
Friday
3 daily flights
Saturday
0 flights
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