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BOS - STL

$132 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 5/25. 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
Sun 6/2
Sun 6/9

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 43,693,958 times on KAYAK, and here is why:

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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
8:59 pm - 10:28 amBOS-STL
14h 29m1 stop
4:05 pm - 3:13 pmSTL-BOS
22h 08m2 stops
$341Spirit Airlines
Find Deal
Fri, May 17 - Mon, May 20
6:10 am - 5:29 pmBOS-STL
12h 19m1 stop
6:20 pm - 10:33 amSTL-BOS
15h 13m1 stop
Thu, May 23 - Sun, May 26
6:35 am - 4:15 pmBOS-STL
10h 40m2 stops
3:55 pm - 12:32 amSTL-BOS
31h 37m2 stops
Wed, Jul 10 - Mon, Jul 15
7:00 am - 9:12 amBOS-STL
3h 12mnonstop
5:46 pm - 12:52 amSTL-BOS
6h 06m1 stop
$345American Airlines
Find Deal
Tue, Jul 30 - Thu, Aug 1
7:00 am - 9:07 amBOS-STL
3h 07mnonstop
5:38 pm - 12:46 amSTL-BOS
6h 08m1 stop
$355American Airlines
Find Deal
Tue, Jun 18 - Thu, Jun 20
6:05 am - 2:15 pmBOS-STL
9h 10m1 stop
11:25 am - 7:49 pmSTL-BOS
7h 24m1 stop
$394Delta
Find Deal
Sun, Jun 2 - Wed, Jun 12
8:00 am - 2:10 pmBOS-STL
7h 10m1 stop
7:10 pm - 1:34 amSTL-BOS
5h 24m1 stop
$398Delta
Find Deal
Wed, May 15 - Mon, May 20
8:45 am - 3:41 pmBOS-STL
7h 56m2 stops
10:15 am - 1:20 amSTL-BOS
14h 05m1 stop
$469United Airlines
Find Deal
Tue, Jun 18 - Wed, Jun 19
5:30 am - 3:40 pmBOS-STL
11h 10m2 stops
6:08 am - 2:16 pmSTL-BOS
7h 08m1 stop
$480United Airlines
Find Deal
Sat, Jul 13 - Wed, Jul 17
7:00 am - 11:59 pmBOS-STL
17h 59m2 stops
2:36 pm - 7:52 amSTL-BOS
16h 16m2 stops
$641Alaska Airlines
Find Deal
Sat, May 18 - Tue, May 21

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 $376 on average. On the other hand, the most expensive months are November and June, where the average cost of tickets is $505 and $499 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 Spirit Airlines ($341) and American Airlines ($345). Spirit Airlines proposed the cheapest one-way flight at $132.

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 5 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 32 flights. The most frequent day of departure is Wednesday, when 16% 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

$132
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly with an average 7% 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 $132 for a one-way ticket and $341 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, Alaska Airlines, and Aeromexico 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 $398 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 $185 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 10848 reviews
8.6Crew
8.0Entertainment
8.2Boarding
7.9Comfort
7.4Food
Airline reviews

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

10.0 ExcellentAllan, May 2024SUN - SLC
Read more about Delta reviews

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.

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.

On 2 different flights the wifi was horrible and there was no drink or snack service.

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.

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.

Crew were fine, drinks and snacks were as well but we were delayed for around 2 hrs which made our entry into Mexico delayed as well with the influx of arrivals at the same time. Sort of wasted our first day of vacation. We left Pittsburgh at 630am and did not arrive in Mexico until late dinner time.

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

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.

Great service, on time, professional experience. Great landing under challenging crosswind conditions at BWI. I made my connection in Charlotte despite the plane getting stuck finding a gate to park in on arrival. The only glitch -- the Airbus 320 from CLT to BWI was quite comfortable, but the larger 321 from Logan to Charlotte had minimal leg/knee room. I get that it's a high volume route but dang, couldn't even open my laptop it was so tight

I did like the employee's, they are very friendly and all smiled most of the time, Overall, from checking in bags to getting on plane, not enough employees to be able to get all on the plane, therefore I was not able to get on the plane, due to no one wea there for me to check in my bag, so I decided to go thru the security point and by the time they were done with my bags, I was told that my bag cannot be checked in, and then found out that the lady that does the check in was boarding the customers onto the plane, she said that she was going back and fourth, there for was not able to get on the plane, which changed all my flights by the time I got to Dallas, I was on standby 3 times, and wasn't sure about being able to get on the fourth plane, so ended up buying another plane ticket, so I could make my destination on time.

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.

They cancelled the flight then did nothing to help us rebook. It was awful - I won’t fly with them again

The process of buying the ticket and navigating all the hidden charges that Frontier throws at you was a terrible experience. The actual airport experience and flying was fine.

The truck that was refueling the plane drove away with the hose still connected to the plane and ripped part of the plane off with it

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.
5/25Sat
3 stopsSpirit Airlines
22h 12mBOS-STL
$132
5/25Sat
3 stopsSpirit Airlines
28h 05mBOS-STL
$134
6/2Sun
3 stopsSpirit Airlines
13h 40mBOS-STL
$138
6/24Mon
1 stopFrontier
8h 58mBOS-STL
$149
5/26Sun
nonstopAmerican Airlines
3h 10mBOS-STL
$157
6/29Sat
1 stopFrontier
21h 55mBOS-STL
$160
5/25Sat
1 stopAmerican Airlines
5h 17mBOS-STL
$169
7/1Mon
2 stopsUnited Airlines
7h 40mBOS-STL
$171
5/17Fri
1 stopDelta
7h 06mBOS-STL
$218
7/24Wed
2 stopsUnited Airlines
7h 40mBOS-STL
$319

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.
5/6Mon
multi-stopFrontier
12h 03mBOS-STL
5/8Wed
multi-stopFrontier
9h 15mSTL-BOS
$232
5/6Mon
multi-stopFrontier
12h 03mBOS-STL
5/9Thu
multi-stopFrontier
11h 52mSTL-BOS
$278
5/8Wed
multi-stop
29h 50mBOS-STL
5/11Sat
multi-stop
20h 07mSTL-BOS
$346
5/5Sun
multi-stop
13h 29mBOS-STL
5/8Wed
multi-stop
9h 15mSTL-BOS
$363
5/6Mon
multi-stopSpirit Airlines
20h 53mBOS-STL
5/8Wed
multi-stopSpirit Airlines
26h 08mSTL-BOS
$387
5/8Wed
multi-stopSpirit Airlines
22h 41mBOS-STL
5/11Sat
multi-stopSpirit Airlines
20h 07mSTL-BOS
$390
5/8Wed
multi-stopDelta
5h 20mBOS-STL
5/11Sat
multi-stopDelta
5h 21mSTL-BOS
$417
5/4Sat
multi-stopDelta
6h 26mBOS-STL
5/7Tue
multi-stopDelta
6h 04mSTL-BOS
$436
5/5Sun
multi-stopAmerican Airlines
9h 05mBOS-STL
5/8Wed
nonstopAmerican Airlines
2h 49mSTL-BOS
$795
5/6Mon
multi-stopAmerican Airlines
18h 43mBOS-STL
5/9Thu
nonstopAmerican Airlines
2h 49mSTL-BOS
$801

Search by stops

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Search by price

Boston - St. Louis Flights

Departure:

Boston (BOS)United States

Destination:

St. Louis (STL)United States

Return flight deals:

St. Louis - Boston

Cabin classes:

$920
$1,610
$1,420
$320