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

View AU$214 flight on Tue, 23 June 2026Opens 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 for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, 7 June - Sun, 14 June
STL
St. Louis
BOS
Boston
AU$645 Return, found 5 days ago
AU$645
Return
found 5 days ago
Select American Airlines flight, departing Sun, 7 June from St. Louis to Boston, returning Sun, 14 June, priced at AU$645 found 5 days ago
American Airlines
Sun, 7 June - Sun, 14 June
STL
St. Louis
BOS
Boston
AU$658 Return, found 5 days ago
AU$658
Return
found 5 days ago
Select American Airlines flight, departing Sun, 7 June from St. Louis to Boston, returning Sun, 14 June, priced at AU$658 found 5 days ago
Delta
Sun, 7 June - Sun, 14 June
STL
St. Louis
BOS
Boston
AU$672 Return, found 5 days ago
AU$672
Return
found 5 days ago
Select Delta flight, departing Sun, 7 June from St. Louis to Boston, returning Sun, 14 June, priced at AU$672 found 5 days ago
American Airlines
Sun, 7 June - Sun, 14 June
STL
St. Louis
BOS
Boston
AU$689 Return, found 5 days ago
AU$689
Return
found 5 days ago
Select American Airlines flight, departing Sun, 7 June from St. Louis to Boston, returning Sun, 14 June, priced at AU$689 found 5 days ago
American Airlines
Sun, 7 June - Sun, 14 June
STL
St. Louis
BOS
Boston
AU$703 Return, found 5 days ago
AU$703
Return
found 5 days ago
Select American Airlines flight, departing Sun, 7 June from St. Louis to Boston, returning Sun, 14 June, priced at AU$703 found 5 days ago
American Airlines
Sun, 7 June - Sun, 14 June
STL
St. Louis
BOS
Boston
AU$724 Return, found 5 days ago
AU$724
Return
found 5 days ago
Select American Airlines flight, departing Sun, 7 June from St. Louis to Boston, returning Sun, 14 June, priced at AU$724 found 5 days ago
United
Sun, 7 June - Sun, 14 June
STL
St. Louis
BOS
Boston
AU$735 Return, found 5 days ago
AU$735
Return
found 5 days ago
Select United flight, departing Sun, 7 June from St. Louis to Boston, returning Sun, 14 June, priced at AU$735 found 5 days ago
American Airlines
Sun, 7 June - Sun, 14 June
STL
St. Louis
BOS
Boston
AU$738 Return, found 5 days ago
AU$738
Return
found 5 days ago
Select American Airlines flight, departing Sun, 7 June from St. Louis to Boston, returning Sun, 14 June, priced at AU$738 found 5 days ago
Delta
Sun, 7 June - Sun, 14 June
STL
St. Louis
BOS
Boston
AU$741 Return, found 5 days ago
AU$741
Return
found 5 days ago
Select Delta flight, departing Sun, 7 June from St. Louis to Boston, returning Sun, 14 June, priced at AU$741 found 5 days ago
Alaska Airlines
Sun, 7 June - Sun, 14 June
STL
St. Louis
BOS
Boston
AU$1,154 Return, found 5 days ago
AU$1,154
Return
found 5 days ago
Select Alaska Airlines flight, departing Sun, 7 June from St. Louis to Boston, returning Sun, 14 June, priced at AU$1,154 found 5 days ago

Frequently asked questions

Which airlines fly direct from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
Enter STL to BOS and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
To find a cheap flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best airline to fly with from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
The best airline to fly with from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) will differ from traveller to traveller. If you like to fly early, WN offers early morning flights. If price is the most important factor, WN typically offers the lowest fares. AA offers the most daily flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.
What is the best time to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
When flying from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.), you'll find around 6 nonstop flights per day. For even more choice, look at flights that include layovers, as there are approximately 84 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Hartsfield-Jackson Atlanta Intl. (ATL), and Seattle - Tacoma Intl. (SEA).
What is the earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
The earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) typically departs at approximately 5:00 AM local time. This service is operated by American Airlines and is a seasonal service active in December. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
You'll typically find the most flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) (STL) to Boston, MA (BOS-Logan Intl.) (BOS) on a Friday, with around 62 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, Southwest Airlines, and United Airlines. Flight options are fairly consistent throughout the week, with Fridays offering only slightly more flights than other weekdays.
What are the most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
The most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) are in the early morning, from 6am to 9am. Around 31% of passengers reckon this time window's best. Heaps of major carriers, including AA, DL and UA, offer flights during this window. These times work well because you can get an early start to your travel day and arrive in Boston with plenty of time to spare.
How long does it take to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
Flying nonstop from STL to BOS takes around 2 hours 30 minutes, with the route covering approximately 1,044 miles. Flights with a layover typically take 2 hours 30 minutes longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
Select the "Business class" and "First class" filters when looking for STL to BOS flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) flight with Expedia?
It's easy to earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Boston from Lambert-St. Louis Intl. (STL)?
If you're planning to travel to Boston from Lambert-St. Louis Intl. (STL), you can fly directly into Logan Intl. (BOS) Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Hartsfield-Jackson Atlanta Intl. (ATL), O'Hare Intl. (ORD) before reaching Boston. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) at the last minute?
Typically, booking a last minute flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) flight and hotel package?
Securing a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.)?
If you booked your St. Louis, MO (STL-Lambert-St. Louis Intl.) to Boston, MA (BOS-Logan Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Logan Intl.
Return price
AU$644
Distance
1669 km
Average flight time
3 hours 37 mins

Book with confidence

Your quick guide to flights from St. Louis to Boston

Pick up great flights from St. Louis to Boston

With Expedia, you have your pick of flights a day with 20 airlines covering flights from St. Louis to Boston. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from St. Louis to Boston that take around hours.

Find cheap flights from St. Louis to Boston

From the great flight deals with prices currently ranging from AU$645 to AU$1,154, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from St. Louis to Boston around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Boston is normally in June.

Reasons to book your flight from St. Louis to Boston with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from St. Louis to Boston across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Boston right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from St. Louis to Boston

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