€124 Cheap Flights St. Louis to Boston (STL-BOS)

View €124 flight on Mon, 2 Feb 2026Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Boston

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

Prices were available within the past 7 days and start at €124 for one-way flights and €338 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, 31 Jan - Mon, 2 Feb
STL
St. Louis
BOS
Boston
€338 Return, found 2 days ago
€338
Return
found 2 days ago
Select Delta flight, departing Sat, 31 Jan from St. Louis to Boston, returning Mon, 2 Feb, priced at €338 found 2 days ago
Delta
Sat, 31 Jan - Mon, 2 Feb
STL
St. Louis
BOS
Boston
€355 Return, found 2 days ago
€355
Return
found 2 days ago
Select Delta flight, departing Sat, 31 Jan from St. Louis to Boston, returning Mon, 2 Feb, priced at €355 found 2 days ago
Delta
Sat, 31 Jan - Mon, 2 Feb
STL
St. Louis
BOS
Boston
€389 Return, found 2 days ago
€389
Return
found 2 days ago
Select Delta flight, departing Sat, 31 Jan from St. Louis to Boston, returning Mon, 2 Feb, priced at €389 found 2 days ago
United
Sat, 31 Jan - Mon, 2 Feb
STL
St. Louis
BOS
Boston
€470 Return, found 2 days ago
€470
Return
found 2 days ago
Select United flight, departing Sat, 31 Jan from St. Louis to Boston, returning Mon, 2 Feb, priced at €470 found 2 days ago
United
Sat, 31 Jan - Mon, 2 Feb
STL
St. Louis
BOS
Boston
€492 Return, found 2 days ago
€492
Return
found 2 days ago
Select United flight, departing Sat, 31 Jan from St. Louis to Boston, returning Mon, 2 Feb, priced at €492 found 2 days ago

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

February is typically the cheapest month to fly

From €119 - €432 per traveller.
St. Louis to Boston route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Logan Intl.
Return price
€338
Distance
1669 km
Average flight time
3 hours 35 mins

Perfect flights from St. Louis to Boston

Embark on an unforgettable journey without breaking the bank with Expedia's incredible deals on cheap flights from St. Louis to Boston. Whether you're aching for a romantic escape with your partner, craving an adventurous solo expedition, or yearning to immerse yourself in the local history and culture, we've got you covered.
 
Picture yourself strolling through the streets of , surrounded by breathtaking architecture and absorbing the vibrant atmosphere of this captivating city. Indulge in the mouth-watering local specialties, from tantalizing street food to exquisite fine dining. With Expedia, you can experience all of this and more, without sacrificing your budget.
 
Our flexible Lambert-St. Louis Intl. to Logan Intl. ticket options cater to your travel preferences, with incredible one-way fares from €124 and roundtrip prices from €338. Whether you're planning a short city break or a longer adventure, our dynamic pricing ensures that you find the best deals for your journey.
 
But the magic doesn't stop there. Expedia offers a range of partner services to enhance your trip. Rent a car at Logan Intl. and explore and its surrounding areas at your own pace. Discover hidden gems off the beaten path, and create unforgettable memories. We also provide a handpicked selection of accommodations, from charming bed and breakfasts to luxury hotels, ensuring that you have a comfortable and memorable stay.
 
Planning your next great adventure is a breeze with Expedia. Our user-friendly platform, unbeatable prices, and round-the-clock customer support are designed to make your travel experience seamless and stress-free. So, why wait? Book your to travel arrangements today and embark on the journey of a lifetime in Boston.

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 €338. 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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