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STL - BOS

$68 Find cheap flights from St. Louis to Boston

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from St. Louis to Boston departing on 7/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
0 bags
Wed 7/17
Wed 7/24

Search hundreds of travel sites at once for deals on flights to Boston

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Boston.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Boston.
In the last 7 days travelers have searched 44,229,043 times on KAYAK, and here is why:

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Boston that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices and deals for you by selecting your travel dates.
Choose your dates
7:33 pm - 8:26 amSTL-BOS
11h 53m1 stop
12:32 pm - 8:42 pmBOS-STL
9h 10m1 stop
$143Frontier
Find Deal
Tue, Jul 9 - Mon, Jul 15
3:09 pm - 12:27 amSTL-BOS
8h 18m1 stop
12:32 pm - 8:42 pmBOS-STL
9h 10m1 stop
$152Frontier
Find Deal
Sat, Jul 6 - Wed, Jul 17
5:20 pm - 11:14 amSTL-BOS
16h 54m1 stop
12:09 pm - 4:20 pmBOS-STL
29h 11m1 stop
$218Spirit Airlines
Find Deal
Sun, Sep 8 - Fri, Sep 13
5:20 pm - 7:30 pmSTL-BOS
25h 10m2 stops
4:09 pm - 4:20 pmBOS-STL
25h 11m3 stops
$223Spirit Airlines
Find Deal
Sun, Sep 8 - Fri, Sep 13
1:10 pm - 8:32 pmSTL-BOS
6h 22m1 stop
1:00 pm - 6:11 pmBOS-STL
6h 11m1 stop
$224Delta
Find Deal
Mon, Jul 1 - Thu, Jul 4
9:47 am - 6:35 pmSTL-BOS
7h 48m1 stop
2:22 pm - 9:54 pmBOS-STL
8h 32m1 stop
$253American Airlines
Find Deal
Tue, Jul 16 - Tue, Jul 23
5:30 pm - 12:45 amSTL-BOS
6h 15m1 stop
9:49 am - 3:40 pmBOS-STL
6h 51m1 stop
$259United Airlines
Find Deal
Wed, Jul 3 - Wed, Jul 10
5:38 pm - 12:46 amSTL-BOS
6h 08m1 stop
4:14 pm - 6:14 pmBOS-STL
3h 00mnonstop
$268American Airlines
Find Deal
Mon, Jul 1 - Thu, Jul 4
7:01 pm - 1:03 amSTL-BOS
5h 02m1 stop
8:00 am - 2:19 pmBOS-STL
7h 19m1 stop
$294Delta
Find Deal
Mon, Jul 15 - Tue, Jul 23
6:02 am - 2:16 pmSTL-BOS
7h 14m1 stop
7:10 pm - 11:22 pmBOS-STL
5h 12m1 stop
$367United Airlines
Find Deal
Thu, Aug 29 - Sun, Sep 1

Flights from St. Louis to Boston - Travel Insights & Trends

Get data-powered insights and trends into flights from St. Louis to Boston to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from St. Louis to Boston?

The average price of all flights from St. Louis to Boston clicked on KAYAK for each day over the last 12 months.
For St. Louis to Boston, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Boston back to St. Louis, the best deals are generally found on Tuesday, with Monday being the most expensive.

What is the cheapest month to fly from St. Louis to Boston?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from St. Louis to Boston, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.
The cheapest month for flights from St. Louis to Boston is February, where tickets cost $317 on average. On the other hand, the most expensive months are April and November, where the average cost of tickets is $484 and $461 respectively.

How far in advance should I book a flight from St. Louis to Boston?

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from St. Louis to Boston, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from St. Louis to Boston, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 63 days before departure.

Which airlines provide the cheapest flights from St. Louis to Boston?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the cheapest one-way ticket from St. Louis to Boston found on KAYAK was with Frontier for $68. Frontier proposed a round-trip connection from $143 and Spirit Airlines from $218.

Which airlines fly non-stop between St. Louis and Boston?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from St. Louis to Boston.
There are 2 airlines that fly nonstop from St. Louis to Boston. They are American Airlines and Southwest. The cheapest airline for this route is American Airlines, with the best one-way deal found costing $234. On average, the best prices for this route can be found at American Airlines.

How many flights are there between St. Louis and Boston per day?

Each day, there are between 3 and 8 nonstop flights that take off from St. Louis and land in Boston, with an average flight time of 2h 35m. The most common departure time is 6:00 pm and most flights take off in the morning. Each week, there are 39 flights. The most frequent day of departure is Friday, when 21% of all weekly flights depart. The fewest flights depart on a Saturday.

Which cabin class options are there for flights between St. Louis and Boston?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 4 cabin class options for the route. These are First, Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from St. Louis to Boston take?

The average nonstop flight takes 2h 29m, covering a distance of 1,043 miles.

What’s the earliest departure time from St. Louis to Boston?

Early birds can take the earliest flight from St. Louis at 7:45 am and will be landing in Boston at 11:20 am.

What’s the latest departure time from St. Louis to Boston?

If you prefer to fly at night, the latest flight from St. Louis to Boston jets off at 9:20 pm and lands at 12:50 am.

Good to know

Low season

January

High season

October

Cheapest flight

$68
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 3% lower on average.
Flight from St. Louis to Boston

When to book flights from St. Louis to Boston

Are your dates flexible? Find out the best times to travel from St. Louis to Boston based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from St. Louis to Boston

  • Which facilities at BOS airport are convenient for traveling mothers?

    BOS airport has Mamava Suites and nursing rooms dedicated to traveling mothers. You can change your baby's diaper in the nursing rooms beside each restroom of Terminal A. Mothers looking for private spaces to feed their babies or pump breasts can check out Mamava Suites inside Terminal B.

  • Where can I eat or grab a snack at BOS airport?

    BOS airport hosts multiple food stations, cafés, and restaurants inside each terminal. Visit Berkshire Farms Market in Terminal A if you need lunch or breakfast. This restaurant offers vegan and vegetarian dishes. Those in a hurry can pass by Green Express in Terminal C for grab-and-go service. For snacks, check out Dunkin' on the Arrivals of Terminal C.

  • Does STL airport provide religious services to its travelers?

    Yes. STL airport has a religious facility called St. Louis Interfaith Chapel. If you need a private and quiet space at the airport to meditate, pray, or conduct a mass, go to the interfaith chapel. Scheduled Muslim prayers, Protestant services and Catholic mass are available here daily. It is located near E33 on the airside of Terminal 2.

  • Which pet facilities are accessible at STL airport?

    STL airport has pet relief areas where you can take your furry friend to stretch and hydrate before the flight. There are outdoor pet relief areas outside Terminal 1 next to exit 6 and next to exit 15 of Terminal 2. If you prefer indoor relief areas go to Concourses A and C of T1 or Concourse E of T2.

  • What is the cheapest flight from St. Louis to Boston?

    In the last 3 days, the lowest price for a flight from St. Louis to Boston was $68 for a one-way ticket and $143 for a round-trip.

  • Do I need a passport to fly between St. Louis and Boston?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from St. Louis to Boston?

    When flying out of St. Louis you will be using Lambert-St Louis. You will be landing at Boston, also known as Boston Logan Intl.

  • Which airlines offer Wi-Fi service onboard planes from St. Louis to Boston?

    All the following airlines offer inflight Wi-Fi service on the St. Louis to Boston flight route: American Airlines, JetBlue, Breeze Airways, Iberia, Delta, British Airways, and Finnair.

  • Which aircraft models fly most regularly from St. Louis to Boston?

    The Embraer 175 is the aircraft model that flies most regularly on the St. Louis to Boston flight route.

  • Which airline alliances offer flights from St. Louis to Boston?

    oneworld is the only airline alliance operating flights between St. Louis and Boston.

  • On which days can I fly direct from St. Louis to Boston?

    There are nonstop flights from St. Louis to Boston on a daily basis.

  • Which is the best airline for flights from St. Louis to Boston, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from St. Louis to Boston are Delta and United Airlines. With an average price for the route of $397 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $436 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from St. Louis to Boston?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from St. Louis to Boston.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from St. Louis to Boston?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boston from St. Louis is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from St. Louis to Boston?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Boston with an airline and back to St. Louis with another airline. Booking your flights between St. Louis and BOS can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from St. Louis to Boston?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Boston from St. Louis up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

See more FAQs

KAYAK’s top tips for finding a cheap flight from St. Louis to Boston

  • Looking for a cheap flight? 25% of our users found flights on this route for $200 or less one-way and $401 or less round-trip.
  • Disabled travelers flying out of St. Louis can consider booking their flights at Lambert St. Louis International Airport (STL). The airport has enhanced accessibility to accommodate travelers with special needs. Inside the airport’s terminals are elevators, visual and audible signs, automatic doors and braille signage. Adapted telephones and wheelchair-accessible toilets are also available throughout the airport. The airlines offer wheelchair service.
  • STL airport is a family-friendly airport. Here you will find an International Play Port managed by The Magic House St. Louis Children's Museum near gate C3. This play area features a kids' version of the MetroLink light rail train, kid-sized plane, and air traffic control tower. Take your kids to the port to burn all their energy while waiting for the flight.
  • STL airport hosts a USO lounge called The James S. McDonnell USO in Terminals 1 and 2 designated for US military members flying out through the airport. Sleep areas, a computer center, and free luggage storage are available in this lounge. Other lounges at STL airport are Wingtips Lounge on the airside of Terminal 2 and the American Airlines lounge called Admirals Club on the airside between Concourses B and C.
  • Boston Logan International Airport (BOS) is an ideal landing airport for corporate travelers since it hosts on-site hotels, including the Hilton Boston Logan Airport Hotel, connected to the terminals through a sky bridge and Hyatt Regency Boston Harbor. These hotels have a business center, meeting rooms, and conference facilities. You can checkin at any hotel to catch up with your work or hold meetings.
  • Travelers flying in through BOS airport need not worry about how they will get to their various destinations since the airport offers convenient ground transportation services. If you are heading to various locations in Boston, including Harvard University and Peabody, take the MBTA buses operating routes 448 and 459 from the terminals. Those heading to the city center can opt for taxis outside each terminal.
See more tips

Prefer to fly non-stop from St. Louis to Boston?

Find which airlines fly direct from Lambert-St Louis to Logan Intl, which days they fly and book direct flights.

Nonstop departures

Lambert-St Louis to Boston Logan Intl

Monday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

Tuesday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

Wednesday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

Thursday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

Friday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

Saturday

Southwest, American Airlines, Iberia, +1 more

Southwest, American Airlines, +2 more

Sunday

American Airlines, Iberia, Qatar Airways, +1 more

American Airlines, Iberia, +2 more

See more direct flights

Nonstop returns

Boston Logan Intl to Lambert-St Louis

Monday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

Tuesday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

Wednesday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

Thursday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

Friday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

Saturday

Southwest, American Airlines, Qatar Airways

Southwest, American Airlines, +1 more

Sunday

American Airlines, Qatar Airways, Southwest

American Airlines, Qatar Airways, +1 more

See more direct flights
See more direct flights

Top 5 airlines serving from St. Louis to Boston

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Boston. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from St. Louis to Boston? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 10000 reviews
7.9Comfort
8.2Boarding
8.0Entertainment
8.6Crew
7.4Food
Airline reviews

Flight was 3 hours late so only had an OK experience

6.0 GoodMelissa, Jun 2024RDU - DTW
Read more about Delta reviews

Flight was 3 hours late so only had an OK experience

It was very cold because the air conditioner was on high power, and my son got sick.

3 hours late and all they have is was a $12 meal voucher. That’s not even enough to cover fast food.

Among the poorest flights I’ve had with Delta in a while. Entertainment system failed completely on a 7.5 hr flight. Crew seemed distracted and not the normal friendly crew. Flight overbooked it seemed… very crowded.

If I can, I always fly Delta. I’ve found their service to always be reliable and pleasant.

You could have not cancelled the flight (AA, which I will be flying from now on) left for BOS despite the fictitious weather issues (that no one in my Boston family could see). You could have rebooked my direct flight to another direct flight instead of sending me though JFK, the worst US airport after O’Hara You could have rebooked me on a Main Cabin seat (like the one I paid for in my original ticket instead of putting me a the last row on JFK->BOS leg, pocketing the difference in ticket price But I do not really care whether you will ever do that in a future because in a future neither I nor anyone from my company (unless they pay out of pocket) nor an of my clients and partners (if they heed my advice) will ever be caught dead on any of Delta flights

Really bad baggage handling. Had my Rimowa bag badly damaged at the latches.

It was pretty good I was worried with the short Layover that I might not catch my connection but the gate was there

It was good until there was a 3 hour delay because there was not any pilots to fly the plane.

There was plenty of overhead room but half of the passengers were told they had to check their carryon bags. My partner and I checked in as early as possible and our seats were split across the aisle.

Great! I love Jet Blue. My favorite airline! Very efficient, clean and timely.

We were told that our flight would be delayed for 90+ minutes because of weather, so we went to get something to eat only to have them randomly start boarding 15 minutes after the announcement, with no warning.

Entertainment... No earphones passed out. Many including me couldn't use the TV. Legroom was good. Crew was indifferent and a bit surly. Free wifi was a nice convenience. Check in desk location was unknown. Gate number on the boarding passes was wrong.

Confusing. Delay updates were out of whack At one point it said my flight was 25 hours. Three gate changes and two delays only to change back to original departure time. Gate announcer and on board flight attendant (Alejandro) making the announcements was impossible to understand due to accent and speed of speech. After beverage service the rear flight attendants sat back there on their phones. No refills no checking in, one sweep through for trash collection. Very impersonal. Bring back Coke products

Business class is great. New airplane, very comfortable, better than some of the major airlines I am used to

Delayed by almost an hour - I also noticed that all JetBlue flights departing from PBI were delayed yet the weather was perfect.

I loved the wifi, much better than Delta. Seats were old. and bathrooms dingy.

There was no wheelchair or wheelchair escort at the gate..unacceptable

Delayed 4 hours because of maintenance issue they knew about all day. Get another plane. Time is precious!

I liked that boarding and take off were timely despite a 15 minute delay due to weather. The pilot communicated with us the entire flight keeping us informed re: turbulance and slight delays on the runway after we landed.

Nothing they cancelled my connection and couldn't get me on a flight for 3 more days

Was 4 1/2 hours delayed. No food options, poor entertainment and cramped seats made worse by people in front reclining while we could not as in back row.

The baggage handlers broke the handle on my bag that they put under the plane that I checked on the jetway. They traded it out for a less quality bag in Tulsa. But, they said they would try to fix it. Bologna! There was no fixing that bag handle. Someone didn’t care how they treated the bag.

The entertainment wasn’t playing in the app or online.

It is a modern tragedy that any airline expects you to travel for 14 hours in such discomfort and that the only way to add comfort is exorbitant prices. I was in pain by the time we landed. Shameful.

Original plane sidelined. Had to wait an hour for replacement.

Crew was very cooperative and professional. Passenger's first checked in bag should be free.

No real agent onsite helping you for missing luggage there. Not like the other airline next to UA desk, they have staff attending in their desk assisting answer/helping luggage issue, even after midnight.

Horrible, the flights kept delaying, so it is obvious that we won't be able to make it to the next connection. No easier/real agent on site to help you figure this out. UA agent on other counters refuse to assist you and direct us to use the QR code/call customer service. So inefficient and poor. While technology seems convenient, but it's not the best interest/experience for customers need help while there is active issue need assistance.

After the morning frenzy of 35 min wait through CLT security at 4;30 AM, it was nice to have a smooth pleasant boarding experience. This 6:30 AM flight was not full. We were able to get seated swiftly and took off promptly. Nice touch they distributed the old fashioned headsets with 8 mm jacks. Snacks were decent and arrival was uneventful.

Unfriendly gate staff and significant delay once we were on the plane.

The gate crew did try to help, however they lacked the information as to whether the flight will operate or not. Being delayed 6 hours and in a limbo on whether the flight will operate or not is not fun. The airline having staffing issues is not encouraging at all.

Multiple gate changes and significant delay leaving DFW. Made for a late arrival

The flight from DFW to chs was delayed with multiple gate changes.

Our flight was delayed by 18 hours. Poor accommodations made and no apology.

From check-in staff to in-flight staff, everyone was wonderfully kind

What an idiot at the boarding gate. Even flying First she was mean and unpleasant.

I missed this flight due to delays on my previous flight.

This flight was awful all around. Delays on the tarmac at PHL before takeoff and at the tarmac in Chicago caused me to miss my final connection. This was completely avoidable, in my opinion.

The A321(?) model of the flight for 5+hrs has no seat back screens. Getting the american airlines wifi experience to watch movies on your own devices is not the same.

One gate agent in Sioux Falls ruined it for a few people on the flight. It was the usual, that personal item is too large, you are going to have to pay $100 to get it on the flight. One family with a baby were told that they had to have a passport for the baby to get on the flight. Also a Sheriff's Deputy needed to go on the airplane to return a lost cell phone to a minor on the flight. The gate agent would NOT let him go on without a boarding pass. I don't know who this moron was, but the sooner Frontier moves him where he can't interact with people, the better off they will be. Let's just say the deputy did the job that he needed to do and returned the phone to the minor on the plane, even with argument from a gate agent that thought he had way more power than he actually does. Very IRRITATING individual.

Bad experience… crew are extremely strict with personal bags… they overcharge me coz my bag was one inch H

They never updated the boarding pass on their apps to show their delay

Online check-in was not user-friendly. Too many fees, not cost effective.

They wouldn’t let us on the flight even tho we were an hour early. No refund not even our bags that were prepaid

I brought a ticket and car rental through Travelocity. There was no where to add a KTN. So I thought i’d add it by looking up ticket on frontier website. I tried 3 times with the frontier chat bot to add my KTN it never updated my boarding pass. So then I tried showing up early to do it in person at the airport. The first employee update my ktn in the system and gave me a new boarding pass. I was sent back by tsa to join regular line. Then I was told to add my Ktn. It would cost me $25 extra. Given the length of the cue I did pay. Congratulations! BUT I will NEVER fly frontier again. Plus the plane was very old. It had actual ashtrays and old looking tray backs. Worst travel experience ever. Im warning my friends and family not to use frontier ever.

I did not enjoy the trip home on Frontier for several reasons: there is too much cost besides the flight, which was more than I would normally pay, then having to pay for luggage, and carry-on, seat (if you want to reserve when booking) then you must pay over $3 for a can of soda, and $4 for a snack. A cup of water is free.

Did not realize seats did not recline. Best to travel in an exit row... No question

I strongly dislike Frontier. I find them barebones, the seats not particularly comfortable, the nickel and diming is maddening, the app is TERRIBLE - super confusing to navigate, and the last 4 frontier flights I have flown have been on AVERAGE 2 hours late, one ruining a fancy night out in Vegas with reservations made well in advance, which was nodded to with a measly 5000 miles, which translates to almost nothing. At least credit a free checked bag or something.

8 hr delay. had to buy another ticket with another airline

Book cheap flights from St. Louis to Boston

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from St. Louis to Boston found on KAYAK in the last 72 hours.
7/20Sat
1 stopFrontier
8h 18mSTL-BOS
$68
7/22Mon
1 stopFrontier
11h 36mSTL-BOS
$75
7/2Tue
1 stopSpirit Airlines
6h 45mSTL-BOS
$82
7/3Wed
nonstopAmerican Airlines
2h 43mSTL-BOS
$103
7/11Thu
1 stopSpirit Airlines
16h 12mSTL-BOS
$121
7/18Thu
1 stopDelta
5h 02mSTL-BOS
$147
6/24Mon
1 stopDelta
5h 25mSTL-BOS
$149
8/1Thu
nonstopAmerican Airlines
2h 38mSTL-BOS
$166
6/26Wed
1 stopUnited Airlines
6h 07mSTL-BOS
$189
8/17Sat
2 stopsUnited Airlines
10h 29mSTL-BOS
$210

Search by stops

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Last minute flights from St. Louis to Boston

Last minute flight, train and bus deals

 
These last-minute flight deals are the cheapest flights found on KAYAK in the last 72 hours for flights from St. Louis to Boston that are departing in the next 10 days.
6/21Fri
multi-stopFrontier
7h 22mSTL-BOS
7/5Fri
multi-stopFrontier
9h 10mBOS-STL
$214
6/22Sat
multi-stop
7h 52mSTL-BOS
7/5Fri
multi-stop
9h 10mBOS-STL
$234
6/22Sat
multi-stopSpirit Airlines
7h 52mSTL-BOS
7/3Wed
multi-stopSpirit Airlines
31h 32mBOS-STL
$250
6/22Sat
multi-stopSpirit Airlines
7h 52mSTL-BOS
7/1Mon
multi-stopSpirit Airlines
16h 11mBOS-STL
$285
6/22Sat
multi-stopUnited Airlines
6h 07mSTL-BOS
7/3Wed
multi-stopUnited Airlines
6h 27mBOS-STL
$290
6/21Fri
multi-stopDelta
5h 11mSTL-BOS
7/3Wed
multi-stopDelta
5h 11mBOS-STL
$330
6/20Thu
multi-stopUnited Airlines
4h 51mSTL-BOS
6/22Sat
multi-stopUnited Airlines
5h 08mBOS-STL
$345
6/18Tue
multi-stopDelta
4h 33mSTL-BOS
6/21Fri
multi-stopDelta
7h 47mBOS-STL
$436
6/21Fri
nonstopAmerican Airlines
2h 43mSTL-BOS
7/2Tue
nonstopAmerican Airlines
3h 07mBOS-STL
$544
6/21Fri
multi-stopAmerican Airlines
6h 01mSTL-BOS
7/2Tue
nonstopAmerican Airlines
3h 07mBOS-STL
$554

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St. Louis - Boston Flights

Departure:

St. Louis (STL)United States

Destination:

Boston (BOS)United States

Return flight deals:

Boston - St. Louis

Cabin classes:

$691
$1,111
$1,368
$314