£101 Cheap Flights from St. Louis (STL) to Boston (BOS)

View £101 flight on Sat, 7 Jun 2025Opens in a new window

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Cheap Flights from St. Louis (STL) to Boston (BOS)

Prices were available within the past 7 days and start at £101 for one-way flights and £247 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, 20 May - Wed, 21 May
STL
St. Louis
BOS
Boston
£247 Return, found 3 days ago
£247
Return
found 3 days ago
Select American Airlines flight, departing Tue, 20 May from St. Louis to Boston, returning Wed, 21 May, priced at £247 found 3 days ago
Delta
Tue, 20 May - Sat, 24 May
STL
St. Louis
BOS
Boston
£261 Return, found 3 days ago
£261
Return
found 3 days ago
Select Delta flight, departing Tue, 20 May from St. Louis to Boston, returning Sat, 24 May, priced at £261 found 3 days ago
American Airlines
Mon, 19 May - Thu, 22 May
STL
St. Louis
BOS
Boston
£266 Return, found 3 days ago
£266
Return
found 3 days ago
Select American Airlines flight, departing Mon, 19 May from St. Louis to Boston, returning Thu, 22 May, priced at £266 found 3 days ago
American Airlines
Mon, 19 May - Sat, 24 May
STL
St. Louis
BOS
Boston
£267 Return, found 3 days ago
£267
Return
found 3 days ago
Select American Airlines flight, departing Mon, 19 May from St. Louis to Boston, returning Sat, 24 May, priced at £267 found 3 days ago
American Airlines
Sat, 17 May - Wed, 21 May
STL
St. Louis
BOS
Boston
£269 Return, found 3 days ago
£269
Return
found 3 days ago
Select American Airlines flight, departing Sat, 17 May from St. Louis to Boston, returning Wed, 21 May, priced at £269 found 3 days ago
American Airlines
Mon, 19 May - Thu, 22 May
STL
St. Louis
BOS
Boston
£273 Return, found 3 days ago
£273
Return
found 3 days ago
Select American Airlines flight, departing Mon, 19 May from St. Louis to Boston, returning Thu, 22 May, priced at £273 found 3 days ago
American Airlines
Tue, 20 May - Tue, 20 May
STL
St. Louis
BOS
Boston
£275 Return, found 3 days ago
£275
Return
found 3 days ago
Select American Airlines flight, departing Tue, 20 May from St. Louis to Boston, returning Tue, 20 May, priced at £275 found 3 days ago
American Airlines
Tue, 20 May - Fri, 23 May
STL
St. Louis
BOS
Boston
£277 Return, found 3 days ago
£277
Return
found 3 days ago
Select American Airlines flight, departing Tue, 20 May from St. Louis to Boston, returning Fri, 23 May, priced at £277 found 3 days ago
American Airlines
Mon, 19 May - Thu, 22 May
STL
St. Louis
BOS
Boston
£281 Return, found 3 days ago
£281
Return
found 3 days ago
Select American Airlines flight, departing Mon, 19 May from St. Louis to Boston, returning Thu, 22 May, priced at £281 found 3 days ago
American Airlines
Mon, 19 May - Thu, 22 May
STL
St. Louis
BOS
Boston
£282 Return, found 3 days ago
£282
Return
found 3 days ago
Select American Airlines flight, departing Mon, 19 May from St. Louis to Boston, returning Thu, 22 May, priced at £282 found 3 days ago
Flight from St. Louis to Boston route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Logan Intl.
Return price
£246
Distance
1669 km

Compare flights from St. Louis to Boston easily and book with confidence

For travelling on business or for pleasure, Expedia makes it easy to book your flights from St. Louis to Boston. Operating between them flights per day, 20 airlines cover the route. And fly direct, getting you to Logan Intl. in just hours. If you have a preferred carrier, use our advanced search tool to find the right flight from Lambert-St. Louis Intl. to Logan Intl..  

To make things even better, in the advanced search, you can also choose to fly economy, premium economy, business or first class, select your maximum number of stops, and pick your preferred departure and arrival time. You can also opt for refundable and direct flights. 

Grab a great deal on your flight from Lambert-St. Louis Intl. (STL) to Logan Intl. (BOS) 

The easiest way to view the best deals on flights from St. Louis to Boston today is to enter your travel dates and hit search. From here, you can sort your results by price to see the cheapest flights first. Right now, return flights from Lambert-St. Louis Intl. to Logan Intl. start at just £247 and range up to £282.  

To find an even better deal, try  

  • being flexible on your dates – midweek flights can be cheaper
  • looking for other airports near St. Louis and Boston
  • booking your flight during May, the cheapest month on this route
  • varying your flight times – early morning and late at night are sometimes cheaper 

Why you should book your St. Louis to Boston flight with Expedia!

We cater for all flight types, cabin classes and airlines. So whether you’re booking flights from Lambert-St. Louis Intl. to Logan Intl. for a budget break or a business trip with a bit of pleasure thrown in, we make it easy to secure the seat that’s right for you.  

Thanks to our supersized inventory that offers great choice all in one place, you know you’ll get a great deal with Expedia. Especially if you bundle your flight together with your hotel, you will unlock amazing savings. For added peace of mind, you can choose flexible bookings or filter to find refundable options, so you won’t pay a fee to change your flight.  

Frequently asked questions

How much is a flight from STL to BOS?
Round-trip flights from Lambert-St. Louis Intl. Airport (STL) to BOS start from £247. This is based on fares listed within the last 7 days on Expedia for flights departing within the next year — book today so you don’t miss out. Prices and availability are subject to change. Additional terms apply.
Do I need to pay a cancellation fee if I cancel my flight from St. Louis Lambert International Airport to BOS?
Each airline has its own terms and conditions. If you decide to cancel your holiday, head to our Customer Service Portal.
How do I find cheap flights from Lambert-St. Louis Intl. Airport (STL) to BOS that have flexible change policies?
Many airlines offer the option to reschedule your flight without a change fee. All you pay is the difference between the original flight and the new flight. When you’re searching for Lambert-St. Louis Intl. Airport (STL) to BOS flights, you’ll see a “no change fees” filter for you to select.
How far is the flight from Lambert-St. Louis Intl. Airport (STL) to BOS?
It’s around 1,700 kilometres between STL and BOS, so expect to be strapped into your seat for a while. Keep yourself occupied by packing things like crossword puzzles or a gripping book.
Which airlines fly direct from Lambert Field to BOS?
With 78 flights every month operating from Lambert-St. Louis Intl. Airport (STL) to Logan Intl. Airport, Southwest Airlines (WN) is a popular choice. Another carrier servicing this route is American Airlines (AA). You’ll have 56 flights every month to select from.
Are St. Louis Lambert International Airport to Logan Intl. Airport (BOS) flight tickets cheaper when they're purchased at the last minute?
Flight prices fluctuate, so it’s no sure thing. While last-minute deals between St. Louis Lambert International Airport and Logan Intl. Airport are possible, it also makes sense to keep a close eye on prices well before you fly. In fact, some air carriers publicize their prices up to a year prior to the departure date. Expedia is constantly updating the biggest airfare bargains around, so keep checking and be ready to book when fare prices drop.

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