Menu

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

Know your dates, get live prices in seconds:

From
To
Depart
Return
Any month
Compare vs. Cheapflights |
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
From
To
Depart
Depart
Time
Anytime

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

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

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

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 St Louis to Boston

One-way from

$40

One-way flight from St Louis 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 St Louis to Boston?

Users have found that leaving on a Wednesday can be a cost-effective option. It’s possible to save up to 7% on your flight compared to booking on days when demand is much higher.

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

Travelers have found it’s best to book a flight 33 days in advance to save up to 84% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 33 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St Louis to Boston 1-2 weeks in advance for as low as $207, or $284 for flights within the next 24 hours.

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

April is one of the best times of the year to fly to Boston from St Louis. Prices for April average $156 per person but you can even find prices for as low as $112. The most expensive prices can be found in the month of September. Opting for a April flight can save you 19% on your journey compared to booking in April

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

It’s optimal to fly from St Louis to Boston in the evening. By choosing this option you can save up to 12% on the cost of your flight, compared to a flight in the afternoon.

Cheap flights from St Louis to Boston in November, December 2020

The best prices found for STL to BOS flights for November, December
9 Dec - 12 Dec
$136pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
4 Dec - 6 Dec
$148pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Frontier
   
2 STOPS
STL
Lambert-St Louis
4 Dec - 6 Dec
$150pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Frontier
 
1 STOP
STL
Lambert-St Louis

St Louis to Boston 2021 flight deals

Cheap flights to Boston from St Louis found for next year
9 Dec - 12 Dec
$136pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Multiple Airlines
   
2 STOPS
STL
Lambert-St Louis
4 Dec - 6 Dec
$148pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Frontier
   
2 STOPS
STL
Lambert-St Louis
4 Dec - 6 Dec
$150pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Frontier
 
1 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
4 Dec - 6 Dec
$148pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Frontier
   
2 STOPS
STL
Lambert-St Louis
4 Dec - 6 Dec
$150pp
STL
Lambert-St Louis
Multiple Airlines
 
1 STOP
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Frontier
 
1 STOP
STL
Lambert-St Louis
4 Dec - 6 Dec
$167pp
STL
Lambert-St Louis
Multiple Airlines
   
2 STOPS
BOS
Boston Logan Intl
BOS
Boston Logan Intl
Frontier
   
2 STOPS
STL
Lambert-St Louis

One-way flights to Boston from St Louis

The cheapest one-way flights from St Louis to Boston
3:43 pm - 3:44 am
Frontier
1 Stop
11h 01m
STL - BOS
Frontier
4:21 am - 5:27 pm
Major Airline
2 Stops
12h 06m
STL - BOS
Major Airline
$111
StudentUniverse
1:00 am - 5:41 pm
Delta
3 Stops
15h 41m
STL - BOS
Delta
$123
Delta

Related info for your journey

Useful info, stats and facts about St Louis to Boston flights.

Flight FAQs

From St Louis 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. Southwest and Delta are some airlines that have done so. 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.

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

Yes, there are multiple flights from St Louis to Boston for under $200. The cheapest flight booked recently is on Multiple Airlines for just $136, but on average you can expect to pay $178.

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

There are no nonstop flights from St Louis 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 St Louis to Boston for under $200?

There are currently 6+ open flights from St Louis to Boston within the next 7 days for less than $200.

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

You can find nonstop flights on the following days: Friday.

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.

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

On average 1 flight departs from Lambert-St Louis to Boston Logan Intl per day.
Morning (6am - Noon) - 100% of flight departures

Does it rain more in St Louis or Boston?

St Louis will have the same amount of rainfall in 1 compared to Boston over the next 12 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 St Louis to Boston?

Airlines like United Airlines and American Airlines fly from St Louis to Boston in about 4h 24m. The time it takes to get you to your destination can typically vary by up to 1h 02m. St Louis and Boston are separated by a distance of 1049 mi. This flight may include one or multiple stops.

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

American Airlines, at $203, was found to be the cheapest airline from St Louis to Boston. An alternate airline flying to your destination would be United Airlines. American Airlines is priced at 8% lower than the current average price of a flight leaving 3 months from now.

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

The cheapest airlines for a one-way flight from St Louis to Boston are Frontier ($40), American Airlines ($92), and Major Airline ($94).

Alternative routes for St Louis to Boston

Destination information for Boston

Things to know before you go. Useful info for your trip from St Louis to Boston
Average temperature for November in Boston
53.6 °F
Avg rainfall for November in Boston
3.2 ″

Airports servicing St. Louis

Airports servicing Boston

Top 5 airlines from St Louis to Boston

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
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%
Weekly flight availability
from St Louis to Boston
Sunday
3 daily flights
Monday
3 daily flights
Tuesday
3 daily flights
Wednesday
3 daily flights
Thursday
0 flights
Friday
0 flights
Saturday
0 flights
Home North America USA Massachusetts Boston Cheap flights from St Louis to Boston