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BOS - STL

$56 Find cheap flights from Boston to St. Louis

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Boston to St. Louis departing on 5/29. 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
Thu 6/6
Thu 6/13

Search hundreds of travel sites at once for deals on flights to St. Louis

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to St. Louis.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Boston to St. Louis.
In the last 7 days travelers have searched 43,707,506 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Boston to St. Louis 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
11:42 am - 7:08 amBOS-STL
20h 26m1 stop
7:44 pm - 8:16 amSTL-BOS
11h 32m1 stop
$99Frontier
Find Deal
Sat, Jun 1 - Tue, Jun 4
11:42 am - 7:08 amBOS-STL
20h 26m1 stop
10:34 am - 11:47 pmSTL-BOS
12h 13m1 stop
Sat, Jun 1 - Tue, Jun 4
10:27 pm - 6:40 pmBOS-STL
21h 13m2 stops
10:34 am - 11:47 pmSTL-BOS
12h 13m1 stop
$156Spirit Airlines
Find Deal
Sat, Jun 1 - Tue, Jun 4
12:07 pm - 6:40 pmBOS-STL
7h 33m1 stop
10:34 am - 11:47 pmSTL-BOS
12h 13m1 stop
$168Spirit Airlines
Find Deal
Sun, Jun 2 - Tue, Jun 4
10:00 am - 2:19 pmBOS-STL
5h 19m1 stop
6:00 am - 2:17 pmSTL-BOS
7h 17m1 stop
$264Delta
Find Deal
Wed, Jun 5 - Wed, Jun 12
2:00 pm - 8:50 pmBOS-STL
7h 50m1 stop
6:00 am - 2:18 pmSTL-BOS
7h 18m1 stop
$274Delta
Find Deal
Tue, May 28 - Tue, Jun 4
11:26 am - 12:41 pmBOS-STL
26h 15m1 stop
6:30 am - 11:00 amSTL-BOS
27h 30m1 stop
$280Sun Country Air
Find Deal
Thu, Jun 13 - Sun, Jun 16
7:00 am - 9:07 amBOS-STL
3h 07mnonstop
6:00 am - 4:48 pmSTL-BOS
9h 48m1 stop
$311American Airlines
Find Deal
Sun, Jun 30 - Thu, Jul 4
7:00 am - 9:12 amBOS-STL
3h 12mnonstop
6:51 pm - 10:29 pmSTL-BOS
2h 38mnonstop
$313American Airlines
Find Deal
Wed, Jul 31 - Wed, Jul 31
11:39 am - 10:44 amBOS-STL
24h 05m1 stop
6:30 pm - 10:40 amSTL-BOS
15h 10m1 stop
$337Sun Country Air
Find Deal
Thu, Oct 10 - Sun, Oct 13

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

Get data-powered insights and trends into flights from Boston to St. Louis 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 Boston to St. Louis?

The average price of all flights from Boston to St. Louis clicked on KAYAK for each day over the last 12 months.
Your flight ticket price will generally be cheaper if you fly to St. Louis on a Tuesday and more expensive on a Monday. On your return trip to Boston, you should consider flying back on a Wednesday, and avoid Mondays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Boston to St. Louis, 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 Boston to St. Louis is February, where tickets cost $344 on average. On the other hand, the most expensive months are June and November, where the average cost of tickets is $527 and $498 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Boston to St. Louis, 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 Boston to St. Louis, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 81 days before departure.

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

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 72 hours, the best return deals on flights connecting Boston to St. Louis were found on Frontier ($99) and Spirit Airlines ($156). Frontier proposed the cheapest one-way flight at $56.

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

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Boston to St. Louis.
There are 2 airlines that fly nonstop from Boston to St. Louis. They are American Airlines and Southwest. The cheapest airline for this route is American Airlines, with the best one-way deal found costing $278. On average, the best prices for this route can be found at American Airlines.

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

Each day, there are between 3 and 9 nonstop flights that take off from Boston and land in St. Louis, with an average flight time of 2h 59m. The most common departure time is 7:00 am and most flights take off in the morning. Each week, there are 52 flights. The most frequent day of departure is Friday, when 17% of all weekly flights depart. The fewest flights depart on a Saturday.

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

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 Boston to St. Louis take?

A direct flight to St. Louis will take on average 2h 58m to travel the 1,043 miles flying distance from Boston.

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

Early birds can take the earliest flight from Boston at 6:50 am and will be landing in St. Louis at 8:45 am.

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

If you prefer to fly at night, the latest flight from Boston to St. Louis jets off at 8:00 pm and lands at 10:00 pm.

Good to know

Low season

January

High season

May

Cheapest flight

$56
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Boston to St. Louis

When to book flights from Boston to St. Louis

Are your dates flexible? Find out the best times to travel from Boston to St. Louis 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 Boston to St. Louis

  • Does STL provide facilities for nursing mothers?

    Yes. STL provides lactation suites for traveling mothers if they want some privacy while they breastfeed or if they need to pump. These lactation suites are outfitted with a comfortable chair, a table, a sink, a bench, a footrest, and an outlet that is appropriately placed for a breast pump. These clean, private suites can be found at Gates C9, E33, and A10.

  • Does BOS have a lounge for the US military?

    Yes. The USO at BOS proudly welcomes active-duty service members of the US military and their families. The lounge is located in Terminal C, before security, on the lower level, toward Terminal E. Amenities at this lounge include comfortable seating around a TV with DVDs and Xbox games, a kitchen area, internet access, computers, emergency personal-care kits, reference materials about Boston, and so much more. This USO is open from 8 am until 9 pm Monday thru Friday and from 8 am to 8 pm on Saturday and Sunday.

  • Does STL have a prayer room or chapel for passengers?

    STL provides travelers and staff alike with two interfaith chapels. The chapels provide prayer books, prayer rugs, and services that include empathetic listening, spiritual guidance, and religious services. Open and available 24/7, one chapel is located on the lower level of Terminal 1 and the other is at Gate E40.

  • How can I fly between BOS and STL?

    American Airlines, JetBlue, and Southwest are among the airlines that operate direct flights between BOS and STL. American Airlines and Delta are among the airlines that offer flights between BOS and STL that have one-stop. Layover cities include Philadelphia (PHL), Washington DC (DCA), and Charlotte (CLT). United Airlines is one of the carriers that operate flights between STL and BOS that have two stops. Layover cities include Newark (EWR) and Chicago (ORD).

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

    In the last 3 days, the lowest price for a flight from Boston to St. Louis was $56 for a one-way ticket and $99 for a round-trip.

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

    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 Boston to St. Louis?

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

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

    American Airlines, JetBlue, Delta, Aeromexico, and Alaska Airlines offer inflight Wi-Fi service on the Boston to St. Louis flight route.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Boston to St. Louis are Delta and Alaska Airlines. With an average price for the route of $404 and an overall rating of 8.0, Delta is the most popular choice. Alaska Airlines is also a great choice for the route, with an average price of $535 and an overall rating of 8.0.

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

    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 Boston to St. Louis.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to St. Louis from Boston 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 Boston to St. Louis?

    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 St. Louis with an airline and back to Boston with another airline. Booking your flights between Boston and STL 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 Boston to St. Louis?

    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 St. Louis from Boston 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 BOS to St. Louis

  • Looking for a cheap flight? 25% of our users found flights on this route for $171 or less one-way and $378 or less round-trip.
  • Air Choice One and Cape Air are the airlines for which the St. Louis Lambert International Airport (STL) serves as a hub. Delta Airlines is the airline for which Boston Logan International Airport (BOS) is a hub. Also, Boston is a focus city for JetBlue.
  • BOS provides animal relief stations for those traveling with a pet or service animal. If your four-legged friend or guide needs to go to the bathroom before your flight, there are animal relief stations in Terminal B at Gate B29, in Terminal C at Gate C20, and in Terminal E at Gate E7.
  • BOS strives to make its terminals and facilities as accessible as possible. Some of the airport’s accessibility adaptations include elevators and ramps in all the terminals, fire alarms that are audio and visual, accessible restrooms in every terminal, and the availability of guest passes that caregivers can use to help differently-abled people beyond the security checkpoint.
  • To get to BOS from downtown Boston, “Take the T.” This means to take the public transportation options offered by the MBTA. These include the Silver Line rapid transit buses, Blue Line subway, and the MTBA ferries.
  • On your way out of STL, consider passing through Terminal 1, where you can hear the live music of the Terminal 1 piano and piano player. Installed as a part of an arts and culture initiative, this ever-present musical performance is also meant to add delight and relaxation to your journey.
See more tips

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

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

Nonstop departures

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

Nonstop returns

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
See more direct flights

Top 5 airlines serving from Boston to St. Louis

 
See real verified KAYAK customer reviews for airlines flying from Boston to St. Louis. 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 Boston to St. Louis? 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 10810 reviews
8.6Crew
8.0Entertainment
8.2Boarding
7.9Comfort
7.4Food
Airline reviews

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

8.0 ExcellentEric, May 2024BOS - CUN
Read more about Delta reviews

Everything went smoothly. I didn’t like that when I booked in the main cabin my wife and I weren’t seated together. One would think when booking on an option that allows picking your seat. They would put you and your travel partner together. Had to call to get it sorted. They did fix.

The gate area was incredibly short staffed, with one representative manning 4-5 flights, which caused a 3 hr delay in boarding even though the plane was all ready to leave. Other flights also were delayed because of this. The flight crew was awesome and I feel bad for the only gate worker on call, but Delta needs to hire more employees.

Very frustrated with boarding gate crew. She announced the plane was small and they would be limiting us to one item to carry on. Not a problem for me as I understand the tiny planes have limited space!! Not the case here! It was a rather large plane and had plenty of room for bags! So because I don’t want to be one of “those people” who ignores the request to check a carry on I did so asking if I would be able to pick it up at the bottom of the ramp on arrival in Knoxville to which she responded “yes”! Then I watched as every other passenger held onto their 2 items and boarded!! Then when we arrived in Knoxville our 2 carry ons had been put with all the other luggage and we had to go to baggage pick up and wait for all the big checked bags to come off the carousel! So she lied!! Frustrating. Next time I won’t be so nice!

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.

They did a fine job. Can't wait to use Delta in the future.

Seats in first class on the E175 recline too far back. I was in 2A, and the man in 1A fully reclined almost the entire flight. It took 6-7 inches of space away from me and made it very difficult to work on my laptop.

I had back trouble prior to my flight and everyone was great about helping me.

My tv was broken on the flight which is disappointing when you pay for a seat and expect a service

Always delays from Boston to Salt lake but this time was very long. Don’t understand while they board the passengers and then make them sit in the plane

Service for food to our seat was a bit slow. Snack choices were just pretzels or baked chips. My seat cushion was not attached. Other than Barbie, video choice were not very good or current.

After we landed, we were held on the plane for 30 minutes. There was no one at the gate once we landed and we forced to sit on a plan that had already over an hour delayed.

almost 4 hour delay as they over booked and had to wait for 8-10 volunteers to agree to travel next day.

Old plane. No outlets for laptop or phone. Seats worn out. Area around seat dirty.

I loved the flight and the crew. It was comfortable and smooth.

The crew was openly hostile and condescending to the customers. They spent the majority of that time in the rear talking and seemed really agitated when people asked questions. I heard five different people told that the information they requested was in the handout or safety brief.

ticketing issues caused many customers to have to go back to check in after waiting in security, then go through security line again.

Surprisingly easy! I was hesitant to try this, but the cost swayed me. I actually felt like I had less stress than all the taxiing and possible delays that occur with short regional flights where you spend less time in the air than getting to and from the plane..

This flight was delayed multiple times and eventually canceled around 2-3ish. Original take off time was around 10:30am. By 3, there were no other options out of Houston, so stuck in Houston for from 3pm - 11am the next day.

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

Even though we left CMI late, we mostly made up the time.

Delayed almost 4 hours for a 45 minute flight with no explanation.

Again, multiple delays and I eventually just canceled and drove!

Great crew. We were delayed so that late passengers could get on the flight. Love the bedding in business class. Good food. Great experience.

The CX617 from HK to BKK was delayed more than 1.5 hours.

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.

Flight delayed, boarding time kept changing, not good. Nee firm information given each time.

delayed delayed delayed. was supposed to have a 2 hour layover and very nearly missed my connection.

Despite a bumpy flight the pilot was great. The rest of the crew on the other hand couldn’t care less if a passenger would colapse and die. Horrible service, robot like, lifeless…

No service due to turbulence. No entertainment on this type of aircraft. But nice old comfortable seats.

Frontier is a crappy airline nothing about it is honest

I didn't get to do this flight l, hard to review

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.

Book cheap flights from Boston to St. Louis

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Boston to St. Louis found on KAYAK in the last 72 hours.
5/29Wed
1 stopFrontier
11h 18mBOS-STL
$56
6/5Wed
1 stopFrontier
22h 51mBOS-STL
$61
5/30Thu
1 stopSpirit Airlines
12h 19mBOS-STL
$70
6/5Wed
2 stopsSpirit Airlines
27h 14mBOS-STL
$82
6/4Tue
1 stopAmerican Airlines
8h 27mBOS-STL
$117
7/2Tue
1 stopDelta
7h 29mBOS-STL
$137
10/24Thu
1 stopDelta
7h 54mBOS-STL
$147
6/4Tue
nonstopAmerican Airlines
3h 10mBOS-STL
$157
5/23Thu
1 stopUnited Airlines
5h 08mBOS-STL
$239
7/6Sat
2 stopsUnited Airlines
18h 15mBOS-STL
$244

Search by stops

Search by airline

Search by price

Last minute flights from Boston to St. Louis

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 Boston to St. Louis that are departing in the next 10 days.
5/11Sat
multi-stopFrontier
7h 29mBOS-STL
5/15Wed
multi-stopFrontier
14h 30mSTL-BOS
$259
5/11Sat
multi-stopFrontier
7h 29mBOS-STL
5/16Thu
multi-stopFrontier
12h 20mSTL-BOS
$274
5/9Thu
multi-stopSpirit Airlines
18h 30mBOS-STL
5/14Tue
multi-stopSpirit Airlines
24h 20mSTL-BOS
$403
5/9Thu
multi-stopSpirit Airlines
18h 30mBOS-STL
5/13Mon
multi-stopSpirit Airlines
30h 21mSTL-BOS
$419
5/8Wed
multi-stopDelta
5h 16mBOS-STL
5/10Fri
multi-stopDelta
4h 27mSTL-BOS
$436
5/12Sun
multi-stopDelta
5h 03mBOS-STL
5/13Mon
multi-stopDelta
5h 24mSTL-BOS
$446
5/10Fri
multi-stopUnited Airlines
5h 43mBOS-STL
5/17Fri
multi-stopUnited Airlines
6h 28mSTL-BOS
$497
5/10Fri
multi-stopUnited Airlines
7h 06mBOS-STL
5/11Sat
multi-stopUnited Airlines
5h 36mSTL-BOS
$516
5/11Sat
multi-stopAmerican Airlines
26h 04mBOS-STL
5/12Sun
nonstopAmerican Airlines
2h 49mSTL-BOS
$548
5/8Wed
nonstopAmerican Airlines
3h 07mBOS-STL
5/15Wed
nonstopAmerican Airlines
2h 49mSTL-BOS
$667

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Search by price

Boston - St. Louis Flights

Departure:

Boston (undefined)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Boston

Cabin classes:

$920
$1,610
$1,420
$338