฿5,840 Cheap Flights from St. Louis (STL) to Boston (BOS)

View ฿5,840 flight on Thu, 2 Oct 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at ฿5,840 for one-way flights and ฿14,115 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Sun, 28 Sep - Thu, 2 Oct
STL
St. Louis
BOS
Boston
฿14,115 Return, found 4 days ago
฿14,115
Return
found 4 days ago
Select United flight, departing Sun, 28 Sep from St. Louis to Boston, returning Thu, 2 Oct, priced at ฿14,115 found 4 days ago
United
Sun, 28 Sep - Thu, 2 Oct
STL
St. Louis
BOS
Boston
฿14,600 Return, found 4 days ago
฿14,600
Return
found 4 days ago
Select United flight, departing Sun, 28 Sep from St. Louis to Boston, returning Thu, 2 Oct, priced at ฿14,600 found 4 days ago
American Airlines
Sun, 28 Sep - Thu, 2 Oct
STL
St. Louis
BOS
Boston
฿14,605 Return, found 4 days ago
฿14,605
Return
found 4 days ago
Select American Airlines flight, departing Sun, 28 Sep from St. Louis to Boston, returning Thu, 2 Oct, priced at ฿14,605 found 4 days ago
American Airlines
Sun, 28 Sep - Thu, 2 Oct
STL
St. Louis
BOS
Boston
฿14,675 Return, found 4 days ago
฿14,675
Return
found 4 days ago
Select American Airlines flight, departing Sun, 28 Sep from St. Louis to Boston, returning Thu, 2 Oct, priced at ฿14,675 found 4 days ago
American Airlines
Sun, 28 Sep - Thu, 2 Oct
STL
St. Louis
BOS
Boston
฿14,705 Return, found 4 days ago
฿14,705
Return
found 4 days ago
Select American Airlines flight, departing Sun, 28 Sep from St. Louis to Boston, returning Thu, 2 Oct, priced at ฿14,705 found 4 days ago
American Airlines
Sun, 28 Sep - Thu, 2 Oct
STL
St. Louis
BOS
Boston
฿14,860 Return, found 4 days ago
฿14,860
Return
found 4 days ago
Select American Airlines flight, departing Sun, 28 Sep from St. Louis to Boston, returning Thu, 2 Oct, priced at ฿14,860 found 4 days ago
American Airlines
Sun, 28 Sep - Thu, 2 Oct
STL
St. Louis
BOS
Boston
฿15,025 Return, found 4 days ago
฿15,025
Return
found 4 days ago
Select American Airlines flight, departing Sun, 28 Sep from St. Louis to Boston, returning Thu, 2 Oct, priced at ฿15,025 found 4 days ago
American Airlines
Sun, 28 Sep - Thu, 2 Oct
STL
St. Louis
BOS
Boston
฿15,090 Return, found 4 days ago
฿15,090
Return
found 4 days ago
Select American Airlines flight, departing Sun, 28 Sep from St. Louis to Boston, returning Thu, 2 Oct, priced at ฿15,090 found 4 days ago
United
Sun, 28 Sep - Thu, 2 Oct
STL
St. Louis
BOS
Boston
฿15,095 Return, found 4 days ago
฿15,095
Return
found 4 days ago
Select United flight, departing Sun, 28 Sep from St. Louis to Boston, returning Thu, 2 Oct, priced at ฿15,095 found 4 days ago
Delta
Sun, 28 Sep - Thu, 2 Oct
STL
St. Louis
BOS
Boston
฿15,115 Return, found 4 days ago
฿15,115
Return
found 4 days ago
Select Delta flight, departing Sun, 28 Sep from St. Louis to Boston, returning Thu, 2 Oct, priced at ฿15,115 found 4 days ago

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

February is typically the cheapest month to fly

From ฿4,212 - ฿14,255 per traveller.

Graph displaying average flight prices per month

Flight from St. Louis to Boston route information
Origin airport
Lambert-St. Louis Intl.
Destination airport
Logan Intl.
Return price
฿14,115
Distance
1669 km
Average flight time
3 hours 38 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 Boston, 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 ฿5,840 and roundtrip prices from ฿14,115. 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 Boston 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 STL to BOS 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 ฿14,115. 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.

Explore a world of travel with Expedia

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