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STL - BOS

$47 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 5/11. 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
Tue 6/4
Tue 6/11

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 43,369,418 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
9:29 pm - 9:27 amSTL-BOS
10h 58m1 stop
10:12 am - 7:07 amBOS-STL
21h 55m1 stop
$131Frontier
Find Deal
Sat, Jun 1 - Sat, Jun 8
9:10 pm - 8:40 amSTL-BOS
10h 30m1 stop
6:10 am - 9:39 amBOS-STL
28h 29m1 stop
Wed, May 29 - Mon, Jun 3
5:15 pm - 12:57 amSTL-BOS
6h 42m1 stop
6:10 am - 9:39 amBOS-STL
28h 29m1 stop
$167Spirit Airlines
Find Deal
Sat, Jun 1 - Mon, Jun 3
5:15 pm - 12:57 amSTL-BOS
6h 42m1 stop
7:36 pm - 1:37 pmBOS-STL
19h 01m2 stops
$168Spirit Airlines
Find Deal
Sat, Jun 1 - Mon, Jun 3
6:51 pm - 10:34 pmSTL-BOS
2h 43mnonstop
6:45 am - 2:26 pmBOS-STL
8h 41m1 stop
$267American Airlines
Find Deal
Wed, Jun 26 - Wed, Jul 3
6:00 am - 11:22 amSTL-BOS
4h 22m1 stop
6:45 am - 2:26 pmBOS-STL
8h 41m1 stop
$277American Airlines
Find Deal
Wed, Jun 26 - Wed, Jul 3
5:07 pm - 1:05 amSTL-BOS
6h 58m1 stop
7:20 am - 11:48 amBOS-STL
5h 28m1 stop
$279Delta
Find Deal
Sat, Jun 1 - Tue, Jun 4
11:51 am - 7:38 pmSTL-BOS
6h 47m1 stop
2:00 pm - 5:55 pmBOS-STL
4h 55m1 stop
$294Delta
Find Deal
Sat, Sep 14 - Thu, Sep 19
5:20 pm - 12:49 amSTL-BOS
6h 29m1 stop
5:50 am - 3:49 pmBOS-STL
10h 59m2 stops
$378United Airlines
Find Deal
Fri, Aug 23 - Tue, Aug 27
5:20 pm - 12:49 amSTL-BOS
6h 29m1 stop
5:50 am - 3:49 pmBOS-STL
10h 59m2 stops
$389United Airlines
Find Deal
Sat, Sep 14 - Wed, Sep 18

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 Monday 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 $312 on average. On the other hand, the most expensive months are April and June, where the average cost of tickets is $484 and $480 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 Spirit Airlines for $47. Frontier proposed a round-trip connection from $131 and Spirit Airlines from $167.

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 $226. 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 10 nonstop flights that take off from St. Louis and land in Boston, with an average flight time of 2h 38m. The most common departure time is 8:00 am and most flights take off in the morning. Each week, there are 46 flights. The most frequent day of departure is Wednesday, when 22% 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 38m, 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

$47
Best time to beat the crowds with an average 20% drop in price.
Most popular time to fly and prices are also 4% 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 $47 for a one-way ticket and $131 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 $424 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 $466 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

Top tips for finding a cheap flight from STL to Boston

  • Looking for a cheap flight? 25% of our users found flights on this route for $195 or less one-way and $416 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

Southwest

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

Southwest

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 10826 reviews
8.6Crew
7.9Comfort
8.2Boarding
8.0Entertainment
7.4Food
Airline reviews

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

10.0 ExcellentBranton, May 2024AVL - ATL
Read more about Delta reviews

It was a good experience except when boarding a female flight attendant did not go out of her way to assist my teenage daughters in finding space for their carry-ons after their compartments were full.

On time departure, smooth trip, flight attendant told through passengers the gate we would arrive at and the gate our outbound flight was departing from. Early arrival

Checking in at the airport the agent only booked the first keg of my trip and had my checked luggage going to the airport with a layover! Never was issued a boarding pass for the second leg or received sticker fir my checked bag. All was well in the end! Delta agents helped to resolve the situation!!!

Delayed due to an ill passenger after loading. Not preventable on Delta's part. Was in first class. The seats are becoming worn and detaching from their velcro attachments. Only got snacks on flight. The attendant was not the friendliest.

I would fly again the whole experience was great. The only feed back I can give that they don't do that American Airlines does is the crew there is more humorous with boarding and thank their passengers. It makes it more fun to fly with them. I would however fly Delta again.

From Atlanta to Cabo I would have hoped on a plane that size I would have been able to breathe and wiggle my feet a little! The leg room in that plane is non existent and I am only 5”4’. And the air vent either wasn’t working very well or just could not blow air from the ceiling to the seat area as I was suffocating through the entire flight! And please don’t say I would have been more comfortable in first class because I cannot afford those rates and have always travelled Main Cabin without issues !

The pilots were good. Disappointing when planes don't have electrical ports

I liked the piloting of the aircraft. Very disappointed about lack of electrical ports. Also, although a short flight. there was enough time to hand out snacks to comfort + seats as was done for first class.

I had a wonderful experience flying with delta. The gentleman taking care of us on our flight was so nice, accommodating, and attentive. He always was smiling and giving pins to the kids which made me smile. The flight was quick too and without turbulence. Thank you for the great flying experience.

I always fly with Delta. My friends tell me their horror stories of flying with other airlines. I just smile and say, “You should fly Delta”

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.

Has been always great except flight cancelation in the past at very last minute waiting till 2am and we when have to beg for overnight accommodation

There were weather issues and coding problems whatever those refer to, but JetBlue, for two days in a row was unbelievably late. Several hours late, resulting in almost no sleep for passengers like me.

The plane was very hot. There were delays . Generally, the flight was great.

If jet blue is going to offer tv at every seat, fix the headphone connection so you can hear. Haven’t had a usable headphone jack in years

Should have video screens Plane audio was poor and without wired connection hard to understand crew. Should serve more than just cups of water and pretzels on six hour flight. Did not see crew rest of flight. Fix charging sockets to retain charging blocks.

I paid $380 for my one-way ticket from California to Minnesota. The fair did not include online check-in. I received instructions from their app to check in at a kiosk. At the kiosk, the boarding pass would not print until an actual person came to verify that I had a personal item and not a carry-on item, On the plane, the person next to me was drunk and allowed to continue to order alcohol. United is garbage I’d rather fly spirit.

The plane was dirty and the in seat air wasn't blowing as planes usually do.

Generally good but there wasn’t any staff available when my luggage didn’t appear at baggage claim in Fresno. It took about half an hour to locate a staff member to open up the locked room where it was being kept.

Do not like the feeling of being in the basic economy. Everyone should feel good no matter what.

All flights were on time and boarding was issue free

Terrible! The plane was old and you are required to connect your own device to their Wi-Fi rather than have entertainment options in the back of the seat in front of you. The Wi-Fi went out during the flight and there was only one plug for the devices every two seats. Three out of five surrounding my family did not work. The seats and spaces under them were so small I could not fit my backpack, which I’ve always brought on flights and fit before no problem. The crew were unpleasant and patronizing.

Great! The plane was decently sized and comfortable. The staff was nice and there was great in flight entertainment

Water service would be great. The way they board is terrible. Slow passengers first😂😂 They need to smart up a bit

Our original business class flight was cancelled so we not only downgraded but we were also spread out across the plane not sitting together in separate middle seats. My poor kids were scared and couldn’t see me on the flight and the crew wasn’t sensitive to the situation and what the airlines did to us. Very dissatisfied with United airlines.

Horrible - they lied to me about baggage & boarding, even though I specifically spoke to their agents the day before my flight about my issue. When I showed up they did not let me board and stranded me at my airport until I bought a new flight with money I did not have to spend.

All four American Airlines flights I took in last seven days were delayed. Caused me loads of problems, missed meetings, loss of time and money.

American cancelled our flight home. Zero option for hotel, alternative transportation and took 3 hours to find our bags so we could take a 3 hour UBER ride home on our dime. Never flying AA again.

They gave my seat away although it was a connecting flight with them and the flight was a bit delayed.

Flight was cancelled had to move to another gate late again no internet paid for the month and never can use it waste of money

Not being able to purchase my check in baggage online was a negative.

LATE LATE LATE!!! Plagued by late AA flights on this trip. Such a drag. This one was by far the worst.

WiFi connected but only let you go to the AA website, not even text messaging worked.

Too bad that first class seats do not recline significantly causing discomfort

Flight delayed over an over all day until it cancelled at 1:30am. Would not repeatedly delay that late. Offer hotel rooms and rebook early. Very difficult for families with small children

Not good 😐 Over priced baggage fees Small hard seats No wifi or entertainment options 😕

Didn't like anything!! Horrible flight. Small seating area and hard seats. Butt was sore after 2 hour flight to Seattle No entertainment or free refreshments No wifi or USB charging receptacles to charge phone entoute like other airliners Luggage rates were 3 times as much as competitors. Difficult to navigate online luggue process to pre pay before flight Overall bad experience WILL NEVER RIDE OR RECOMMEND FRONTIER TO FRIENDS OR FAMILY MEMBERS!!! THIS IS A SHAME!! MOST MESERIBLE FLIGHT OF MY LIFE!! AND I THOUGHT SPIRIT WAS 👎 YOU GOT THEM BEAD HANDS DOWN!!

Flight was a little late taking off. Seats are too upright, no ports to charge devices, no wifi, no entertainment

Six hour delay. Poor customer service. No voucher. Bad communication. Missed important appointments.

Our flight was delayed an hour, then when we got to board our flight finally, we were waiting in our seats for take off for 45 minutes before it was communicated that there was a maintenance issue therefore we waited on the plane for over an hour while that was resolved. We did not get to Phoenix until almost 3 hours after we were originally supposed to. This was the first and last time I will be flying Frontier.

Flight was canceled with little warning. Flight was rebooked through Ontario, California and connecting flight was delayed by over three hours. Frontier is living up to their Greyhound of the skies reputation for sure.

I purchased a carry on bag online…was supposed to cost $72 but after a whole slew of bs charges, the total was over $175.00. Because of these hidden charges, I will not even consider flying Frontier ever again. It’s just not worth the hassle. I’m scratching this company off my list forever.

Flight was OK. Seats were good no cell phone charges on the plane no TVs or entertainment.

There were 3 leg for the trip and each leg was delayed by 90 minutes or more. The boarding process takes forever with people waiting on the jetway even though most folks do not have carry-on. The whole process is poorly managed.

Flight cancelled and was told by a rude gate agent that they don’t accommodate on other airlines. Had to wait 5 hours for a connecting flight that had a 7 hour layover. Would not allow bags to be checked early so we couldn’t go through security .Had to rent a car for the afternoon to store bags and get a meal. Also incurred a hotel fee. No apology or reason given for the cancellation- just rudeness.

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.
5/11Sat
1 stopSpirit Airlines
6h 42mSTL-BOS
$47
5/18Sat
1 stopFrontier
15h 18mSTL-BOS
$61
5/26Sun
1 stopAmerican Airlines
7h 54mSTL-BOS
$117
8/17Sat
1 stopAmerican Airlines
8h 36mSTL-BOS
$137
5/16Thu
2 stops
9h 01mSTL-BOS
$145
6/3Mon
1 stopDelta
4h 55mSTL-BOS
$147
6/10Mon
2 stops
30h 53mSTL-BOS
$148
5/20Mon
1 stopDelta
5h 24mSTL-BOS
$199
8/17Sat
2 stopsUnited Airlines
14h 18mSTL-BOS
$207
8/24Sat
3 stopsUnited Airlines
16h 56mSTL-BOS
$239

Search by stops

Search by airline

Search by price

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.
5/8Wed
multi-stopFrontier
9h 15mSTL-BOS
5/11Sat
multi-stopFrontier
7h 29mBOS-STL
$250
5/8Wed
multi-stop
9h 15mSTL-BOS
5/10Fri
multi-stop
14h 29mBOS-STL
$348
5/7Tue
multi-stopDelta
5h 53mSTL-BOS
5/15Wed
multi-stopDelta
5h 10mBOS-STL
$417
5/7Tue
multi-stopDelta
7h 12mSTL-BOS
5/11Sat
multi-stopDelta
7h 25mBOS-STL
$419
5/6Mon
multi-stopSpirit Airlines
21h 14mSTL-BOS
5/11Sat
multi-stopSpirit Airlines
11h 15mBOS-STL
$434
5/6Mon
multi-stopSpirit Airlines
21h 14mSTL-BOS
5/10Fri
multi-stopSpirit Airlines
30h 45mBOS-STL
$448
5/6Mon
nonstopAmerican Airlines
2h 49mSTL-BOS
5/6Mon
multi-stopAmerican Airlines
6h 00mBOS-STL
$603
5/7Tue
nonstopAmerican Airlines
2h 49mSTL-BOS
5/8Wed
nonstopAmerican Airlines
3h 07mBOS-STL
$670
5/6Mon
multi-stopUnited Airlines
7h 07mSTL-BOS
5/6Mon
multi-stopUnited Airlines
15h 55mBOS-STL
$699
5/7Tue
multi-stopUnited Airlines
7h 46mSTL-BOS
5/15Wed
multi-stopUnited Airlines
5h 13mBOS-STL
$719

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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:

$1,104
$3,599
$1,627
$340