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

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The best prices from Boston to Lambert-St Louis Intl are usually found in January or June, booked 42 days in advance, depart on a Thursday or Friday and return on a Thursday

How to find the cheapest flight from
Boston (BOS) to Lambert-St Louis Intl (STL)

BOS - STL
Price
$188 - $264
STL
Temperature
44.6 - 89.6 °F
STL
Rainfall
2.2 - 5.1 inches

Popular in

September

High demand for flights, 13% potential price rise

Cheapest in

January

Best time to find cheap flights, 18% potential price drop

Round-trip from

$188

From Boston to Lambert-St Louis Intl

One-way from

$120

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

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.
What is the cheapest day to fly round-trip from Boston to Lambert-St Louis Intl?

Flights from Boston to Lambert-St Louis Intl are found to be more expensive on Sunday. 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 Lambert-St Louis Intl.

How far in advance should I book a flight from Boston to Lambert-St Louis Intl?

Find a great deal and save up to 33% by booking at least 61 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Boston to Lambert-St Louis Intl within the next two weeks, with the cheapest ticket starting at $143.

What is the cheapest month to fly from Boston to Lambert-St Louis Intl?

Flights from Boston to Lambert-St Louis Intl lean towards being more expensive in July. Prices are generally better when you fly from Boston to Lambert-St Louis Intl in June, with the cheapest ticket starting at $77.

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

It’s typically best to fly out from Boston to Lambert-St Louis Intl in the afternoon. Doing so could potentially save you 13% on the flight price compared to flying in the evening, which is usually more expensive.

Cheap flights from Boston to Lambert-St Louis Intl in March, April 2021

30 Mar - 6 Apr
$88pp
BOS
Boston Logan Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
BOS
Boston Logan Intl
30 Mar - 6 Apr
$139pp
BOS
Boston Logan Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
   
2 STOPS
BOS
Boston Logan Intl
2 Apr - 6 Apr
$142pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
BOS
Boston Logan Intl

Boston to Lambert-St Louis Intl 2021 flight deals

30 Mar - 6 Apr
$88pp
BOS
Boston Logan Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
BOS
Boston Logan Intl
30 Mar - 6 Apr
$139pp
BOS
Boston Logan Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
   
2 STOPS
BOS
Boston Logan Intl
2 Apr - 6 Apr
$142pp
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
BOS
Boston Logan Intl

Last minute flights from Boston to Lambert-St Louis Intl

11 Mar - 14 Mar
$194pp
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
BOS
Boston Logan Intl
11 Mar - 14 Mar
$212pp
BOS
Boston Logan Intl
Multiple Airlines
     
3 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
BOS
Boston Logan Intl
11 Mar - 14 Mar
$221pp
BOS
Boston Logan Intl
Frontier
   
2 STOPS
STL
Lambert-St Louis
STL
Lambert-St Louis
Frontier
 
1 STOP
BOS
Boston Logan Intl

One-way flights to Lambert-St Louis Intl from Boston

1:45 am - 5:49 am
Delta
1 Stop
5h 04m
BOS - STL
Delta
$120
Delta
3:40 am - 6:31 am
United Airlines
1 Stop
27h 51m
BOS - STL
United Airlines
$127
United
6:14 am - 3:01 pm
Frontier
2 Stops
33h 47m
BOS - STL
Frontier
$129
Gotogate

Related info for your journey

Flight FAQs

From Boston to Lambert-St Louis Intl

Are flight prices decreasing from Boston to St Louis due to COVID-19 (coronavirus)?

At this time, Cheapflights has noticed price decreases for many domestic flights due to COVID-19. Travel is not necessarily recommended at this time, and flights may be prone to cancellation: please check with local authorities in both Boston and St Louis for travel alerts, and be sure to review the airline's cancellation policy and travel advisories before booking. For more information, please view our post on what to know about COVID-19 (coronavirus) and travel.

What safety measures are being taken by airlines flying from Boston Logan Intl to Lambert-St Louis to control the spread of COVID-19?

Delta is one of the many airlines that have implemented additional safety measures to control the spread of COVID-19. Airline carriers are regularly disinfecting and sanitizing their aircraft. Masks are provided and are mandatory while on board. Pre-flight testing for symptoms and antibodies, alongside socially distanced seating (for a limited time) will work towards keeping travelers safer while flying from Boston Logan Intl to Lambert-St Louis. Policies will vary by airline.

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, Delta, and United Airlines flying from Boston Logan Intl to Lambert-St Louis have implemented new flexible cancellation policies.

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

Yes, there are multiple flights from Boston to Lambert-St Louis Intl for under $100. The cheapest flight booked recently is on Frontier for just $88, but on average you can expect to pay $161.

Are there nonstop flights from Boston to Lambert-St Louis Intl for under $100 on Cheapflights?

There are no nonstop flights from Boston to Lambert-St Louis Intl, but Cheapflights can provide you with all the information you need to find the fastest route with the fewest stops.

Are there last-minute flights available from Boston to Lambert-St Louis Intl for under $200?

There are currently 4+ open flights from Boston to Lambert-St Louis Intl within the next 7 days for less than $200.

How popular is this flight route?

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

Does it rain more in Boston or St Louis?

The rainfall in Boston is generally same as the rainfall in St Louis. This will continue over the next 16 days.

Is Boston weather warmer or cooler than St Louis?

Expect the weather to be around 90 °F on average in July. As the temperature peaks, try to get your plans done early, as flight price and availability will have an impact on your travels. The climate in St Louis is generally hotter than in Boston.

How long is the flight from Boston to Lambert-St Louis Intl?

Frontier and Major Airline can get you from Boston to Lambert-St Louis Intl in just under 12h 27m. Your travel time can differ by up to 7h 01m. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

Our cheapest airline available from Boston to Lambert-St Louis Intl is Frontier. Our recent data shows that you can find tickets from as low as $88 on this airline. Frontier is 61% cheaper than the average price of flights available within the next 90 days to this destination.

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

One-way options have recently been found by users for as low as $50 on Frontier. Other airlines that offer cheap prices include American Airlines from $118 and Delta from $120 one-way.

Alternative routes for Boston to Lambert-St Louis Intl

Destination information for Lambert-St Louis Intl

Average temperature for March in Lambert-St Louis Intl
59.0 °F
Avg rainfall for March in Lambert-St Louis Intl
3.3 ″

Airports servicing Boston

Airports servicing St. Louis

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

Airline Cheapest Average Flexibility On-time COVID-19 safety
Frontier
$77 $234 No cancel fee 62%
United Airlines
$92 $263 No cancel fee 69%
American Airlines
$92 $278 No cancel fee 71%
Delta
$97 $278 No cancel fee N/A
Southwest
$398 $593 No cancel fee 63%
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