Cheap Flights from St. Louis (STL) to Boston (BOS) from HK$1,966~

View HK$1,966 flight on Mon, 18 Aug 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Logan International Airport (BOS)

  • Plan, book, fly with confidence

  • trending down icon

    Be in the know

    Get alerts if flight prices drop or rise*
  • bex rewards loyalty icon

    Book smarter

    Save up to 35% on select hotels after you book a flight*
  • payments icon

    Earn twice

    Earn your airline miles on top of our rewards
    Sign in

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

Prices were available within the past 7 days and start at HK$1,966 for one-way flights and HK$4,056 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Southern Airways Express
Mon, 18 Aug - Sun, 24 Aug
STL
St. Louis
BOS
Boston
HK$4,056 Return, found 3 days ago
HK$4,056
Return
found 3 days ago
Select Southern Airways Express flight, departing Mon, 18 Aug from St. Louis to Boston, returning Sun, 24 Aug, priced at HK$4,056 found 3 days ago
Delta
Mon, 18 Aug - Sun, 24 Aug
STL
St. Louis
BOS
Boston
HK$4,100 Return, found 3 days ago
HK$4,100
Return
found 3 days ago
Select Delta flight, departing Mon, 18 Aug from St. Louis to Boston, returning Sun, 24 Aug, priced at HK$4,100 found 3 days ago
Delta
Mon, 18 Aug - Sun, 24 Aug
STL
St. Louis
BOS
Boston
HK$4,170 Return, found 3 days ago
HK$4,170
Return
found 3 days ago
Select Delta flight, departing Mon, 18 Aug from St. Louis to Boston, returning Sun, 24 Aug, priced at HK$4,170 found 3 days ago
Delta
Mon, 18 Aug - Sun, 24 Aug
STL
St. Louis
BOS
Boston
HK$4,174 Return, found 3 days ago
HK$4,174
Return
found 3 days ago
Select Delta flight, departing Mon, 18 Aug from St. Louis to Boston, returning Sun, 24 Aug, priced at HK$4,174 found 3 days ago
Southern Airways Express
Mon, 18 Aug - Sun, 24 Aug
STL
St. Louis
BOS
Boston
HK$4,218 Return, found 3 days ago
HK$4,218
Return
found 3 days ago
Select Southern Airways Express flight, departing Mon, 18 Aug from St. Louis to Boston, returning Sun, 24 Aug, priced at HK$4,218 found 3 days ago
Southern Airways Express
Mon, 18 Aug - Sun, 24 Aug
STL
St. Louis
BOS
Boston
HK$4,292 Return, found 3 days ago
HK$4,292
Return
found 3 days ago
Select Southern Airways Express flight, departing Mon, 18 Aug from St. Louis to Boston, returning Sun, 24 Aug, priced at HK$4,292 found 3 days ago
Southern Airways Express
Mon, 18 Aug - Sun, 24 Aug
STL
St. Louis
BOS
Boston
HK$4,335 Return, found 3 days ago
HK$4,335
Return
found 3 days ago
Select Southern Airways Express flight, departing Mon, 18 Aug from St. Louis to Boston, returning Sun, 24 Aug, priced at HK$4,335 found 3 days ago
Delta
Mon, 18 Aug - Sun, 24 Aug
STL
St. Louis
BOS
Boston
HK$4,336 Return, found 3 days ago
HK$4,336
Return
found 3 days ago
Select Delta flight, departing Mon, 18 Aug from St. Louis to Boston, returning Sun, 24 Aug, priced at HK$4,336 found 3 days ago
American Airlines
Mon, 18 Aug - Sun, 24 Aug
STL
St. Louis
BOS
Boston
HK$4,486 Return, found 3 days ago
HK$4,486
Return
found 3 days ago
Select American Airlines flight, departing Mon, 18 Aug from St. Louis to Boston, returning Sun, 24 Aug, priced at HK$4,486 found 3 days ago
United
Mon, 18 Aug - Sun, 24 Aug
STL
St. Louis
BOS
Boston
HK$4,606 Return, found 3 days ago
HK$4,606
Return
found 3 days ago
Select United flight, departing Mon, 18 Aug from St. Louis to Boston, returning Sun, 24 Aug, priced at HK$4,606 found 3 days ago

Find the cheapest month to fly from St. Louis (STL) to Boston (BOS)

February is typically the cheapest month to fly

From HK$1,020 - HK$3,452 per traveller.

Graph displaying average flight prices per month

St. Louis to Boston route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Logan Intl.
Return price
HK$4,056
Distance
1669 km

Flights from St. Louis to Boston

Book cheap flights from St. Louis (STL) to Boston (BOS) on Expedia.com.hk. Find the best flight deals to destinations around the world for your next leisure or business travel on Expedia.com.hk.

Search for flights from St. Louis (STL) to Boston (BOS) to find great flight deals suitable to your travel date and time. Expedia.com.hk flight booking search engine is simple to use and looking for cheap flights is as easy as a click of a mouse or on your mobile devices.

Be assured that you’re seeing the best price guaranteed! Our friendly customer service representatives are here to serve you 24 hours day to provide assistance and answer any questions that you may have about booking your St. Louis (STL) to Boston (BOS) trip. Call us at 3077-4857 (direct number - 24 hours day for English).

Save more when combine your Boston flight with a hotel for a package deal! Discover additional savings by booking in advance. Now you can find activities in Boston and things to do in Boston for your perfect vacation with Expedia Thing to Do.

If you would like to book flights to Boston more flexibly, many prefer to purchase one-way tickets with options to take different airlines. A one way ticket to Boston is HK$1,966 now!

 

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 HK$4,056. 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 vacation, 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 kilometers 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.

Explore a world of travel with Expedia

*Available to Expedia members.