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

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The best prices from Lambert-St Louis Intl to Boston 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
Lambert-St Louis Intl (STL) to Boston (BOS)

All the information you need to plan the best STL to BOS flight in 2021: compare Lambert-St Louis Intl to Boston flight prices with the expected peak season, weather and rainfall in Boston.
STL - BOS
Price
$188 - $284
BOS
Temperature
39.2 - 84.2 °F
BOS
Rainfall
2.8 - 3.9 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 Intl to Boston

One-way from

$134

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

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 Lambert-St Louis Intl to Boston?

Users have found that flying from Lambert-St Louis Intl to Boston on a Friday typically leans towards higher prices. However, this doesn’t mean you still can’t find a deal. Flexibility with other aspects of your flight can still land a great price for your trip.

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

To save on the cost of your flight from Lambert-St Louis Intl to Boston, book at least 20 days before your planned departure. Booking around this time can save you about 25% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $185 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $243.

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

August is one of the best times of the year to fly to Boston from Lambert-St Louis Intl. Prices for August average $206 per person but you can even find prices for as low as $50. The most expensive prices can be found in the month of December. Opting for a August flight can save you 39% on your journey compared to booking in August

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

When flying from Lambert-St Louis Intl to Boston, the time of day you fly usually plays a role in the price. Save by searching for a flight at noon, which can drop the price by up to 10% versus a flight in the morning.

Cheap flights from Lambert-St Louis Intl to Boston in May, June 2021

The best prices found for STL to BOS flights for May, June
1 Jun - 8 Jun
$163pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
1 Jun - 8 Jun
$178pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
1 Jun - 8 Jun
$179pp
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 Intl to Boston 2021 flight deals

Cheap flights to Boston from Lambert-St Louis Intl found for this year
21 Oct - 25 Oct
$119pp
STL
Lambert-St Louis
American Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
American Airlines
 
1 STOP
STL
Lambert-St Louis
1 Jun - 8 Jun
$163pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis
1 Jun - 8 Jun
$178pp
STL
Lambert-St Louis
Spirit Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Spirit Airlines
 
1 STOP
STL
Lambert-St Louis

Last minute flights from Lambert-St Louis Intl to Boston

Late deals on round-trip flights to Boston from Lambert-St Louis Intl, departing today and this week
11 May - 18 May
$226pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
11 May - 18 May
$234pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Multiple Airlines
 
1 STOP
STL
Lambert-St Louis
11 May - 18 May
$236pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis

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

The cheapest one-way flights from Lambert-St Louis Intl to Boston
4:15 pm - 6:26 am
Spirit Airlines
1 Stop
13h 11m
STL - BOS
Spirit Airlines
$134
Spirit
6:50 pm - 8:53 am
Frontier
2 Stops
37h 03m
STL - BOS
Frontier
$135
Kiwi.com
2:30 pm - 8:34 pm
American Airlines
1 Stop
5h 04m
STL - BOS
American Airlines

Related info for your journey

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

Flight FAQs

From Lambert-St Louis Intl to Boston

Are flight prices decreasing from St Louis to Boston 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 St Louis and Boston 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 Lambert-St Louis to Boston Logan Intl to control the spread of COVID-19?

Airlines globally have implemented additional safety measures to accommodate you. Delta is one of them. Some of the new policies that have been implemented to accommodate travelers flying from Lambert-St Louis to Boston Logan Intl are improved sanitation, HEPA filters, mask requirements, social distance seating (for a limited time), and pre-flight testing for antibodies and symptoms. Policies will vary by airline.

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.

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 is 1 flight from Lambert-St Louis to Logan Intl, all of which are around 4h 20m 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.

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

Yes, there are multiple flights from Lambert-St Louis Intl to Boston for under $200. The cheapest flight booked recently is on American Airlines for just $119, but on average you can expect to pay $193.

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

There are no nonstop flights from Lambert-St Louis Intl to Boston, 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 Lambert-St Louis Intl to Boston for under $300?

There are currently 20+ open flights from Lambert-St Louis Intl to Boston within the next 7 days for less than $300.

How popular is this flight route?

Within the past month, 51 users have taken a look at flights from Lambert-St Louis to Boston Logan Intl.

Does it rain more in St Louis or Boston?

St Louis will have greater rainfall in 0 compared to Boston over the next 18 days.

Is St Louis weather warmer or cooler than Boston?

You can imagine temperatures to be in the 90 °F range in July. The weather in Boston is generally colder than St Louis's. As flight availability is subject to become more limited as peak season approaches it is ideal to book in a timely manner.

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

There are many flights that can get you from Lambert-St Louis Intl to Boston in 5h 01m. Fly via American Airlines or Spirit Airlines to get the fastest option. This flight may include one or multiple stops.

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

American Airlines, at $119, was found to be the cheapest airline from Lambert-St Louis Intl to Boston. An alternate airline flying to your destination would be Spirit Airlines. American Airlines is currently priced 46% below the average price you’ll pay for this route.

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

For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $72. Users have also found prices from $90 and $133 on Spirit Airlines and Frontier, respectively.

Alternative routes for Lambert-St Louis Intl 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 Lambert-St Louis Intl to Boston.
Average temperature for May in Boston
68.0 °F
Avg rainfall for May in Boston
3.7 ″

Airports servicing St. Louis

Airports servicing Boston

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

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

Hourly flight availability from Lambert-St Louis Intl to Boston

See what time of day planes typically take off from Lambert-St Louis Intl towards Boston.
Morning 6 AM to noon 100% of STL to BOS departures
Early morning Midnight to 6 AM 0% of STL to BOS departures
Afternoon Noon to 6 PM 0% of STL to BOS departures
Evening 6 PM to midnight 0% of STL to BOS departures
Midnight
6 AM
Noon
6 PM
Weekly flight availability
from Lambert-St Louis Intl to Boston
See how many times per day planes take to the skies headed from Lambert-St Louis Intl to Boston.
Sunday
1 daily flight
Monday
1 daily flight
Tuesday
2 daily flights
Wednesday
2 daily flights
Thursday
1 daily flight
Friday
1 daily flight
Saturday
0 flights
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