$86 Find Cheap Flights from St. Louis to Maine

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 Maine departing on 3/31. 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
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to Maine

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Maine, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from St. Louis to Maine, as well as popular online travel agencies
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Flight Deals

Cheap Flights from St. Louis to Maine

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boston
Boston1 stop$340
Bangor
Bangor1 stop$279
Portland
Portland1 stop$295
Boston
Boston1 stop$340
Bangor
Bangor1 stop$279
Portland
Portland1 stop$295

Book Cheap St. Louis to Maine Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from St. Louis to Maine 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from St. Louis to Maine

mar., abr. 21 - sáb., abr. 25
American Airlines Logo
5:21 pm - 11:25 pm
STL
-
BGR
5h 04m
1 stop
American Airlines Logo
6:40 am - 11:47 am
BGR
-
STL
6h 07m
1 stop
$279American Airlines
mar., abr. 21 - sáb., abr. 25
Delta Logo
9:59 am - 11:31 pm
STL
-
BGR
12h 32m
2 stops
Delta Logo
6:00 am - 12:05 pm
BGR
-
STL
7h 05m
1 stop
$284Delta
mar., abr. 21 - sáb., abr. 25
Delta Logo
5:27 pm - 11:31 pm
STL
-
BGR
5h 04m
1 stop
Delta Logo
6:00 am - 12:05 pm
BGR
-
STL
7h 05m
1 stop
$294Delta
mié., may. 13 - mar., may. 19
American Airlines Logo
7:05 am - 11:22 pm
STL
-
PWM
15h 17m
1 stop
American Airlines Logo
7:07 am - 4:41 pm
PWM
-
STL
10h 34m
1 stop
$295American Airlines
mar., may. 12 - mié., may. 20
Delta Logo
9:30 am - 4:35 pm
STL
-
PWM
6h 05m
1 stop
Delta Logo
11:03 am - 3:35 pm
PWM
-
STL
5h 32m
1 stop
$299Delta
mar., abr. 21 - jue., abr. 30
Delta Logo
11:42 am - 11:31 pm
STL
-
BGR
10h 49m
2 stops
Delta Logo
5:15 am - 12:05 pm
BGR
-
STL
7h 50m
1 stop
$299Delta
jue., mar. 12 - mar., mar. 17
Frontier Logo
4:51 pm - 11:41 am
STL
-
BOS
17h 50m
2 stops
Frontier Logo
12:36 pm - 10:37 am
BOS
-
STL
23h 01m
1 stop
$341Frontier
mié., mar. 25 - sáb., mar. 28
Southwest Logo
2:25 pm - 11:25 pm
STL
-
BOS
8h 00m
2 stops
Southwest Logo
5:35 am - 7:40 am
BOS
-
STL
3h 05mnonstop
$342Southwest
jue., mar. 26 - sáb., abr. 4
Frontier Logo
11:21 am - 11:41 am
STL
-
BOS
23h 20m
1 stop
Frontier Logo
12:40 pm - 10:30 am
BOS
-
STL
22h 50m
1 stop
$343Frontier
jue., mar. 26 - sáb., abr. 4
Southwest Logo
4:45 pm - 12:05 am
STL
-
BOS
6h 20m
1 stop
Southwest Logo
6:40 pm - 8:50 pm
BOS
-
STL
3h 10mnonstop
$345Southwest
Booking Insights

KAYAK's insights & trends for St. Louis to Maine flights

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

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from St. Louis to Maine, 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 Maine is September, when tickets cost $382 (return) on average. On the other hand, the most expensive months are February and November, when the average cost of round-trip tickets is $477 and $474 respectively.

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

The average price of all round-trip flights from St. Louis to Maine clicked on KAYAK for each day over the last 12 months.

For St. Louis to Maine, Wednesday is the cheapest day to fly on average and Sunday is the most expensive. Flying from Maine back to St. Louis, the best deals are generally found on Wednesday, with Sunday being the most expensive.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from St. Louis to Maine, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from St. Louis to Maine, you should book around 4 weeks before departure, which saves you about 52% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 8 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$86
Best time to beat the crowds with an average 8% drop in price.
Most popular time to fly with an average 8% increase in price.
Flight from St. Louis to Boston

FAQs - booking Maine flights

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

    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 Maine.

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

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

    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 from St. Louis to Maine with an airline and back with another airline.

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

    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 from St. Louis to Maine up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Maine?

    The cheapest time of day to fly to Maine is generally at night, when round-trip flights cost $424 on average. Morning departures are around 17% more expensive than evening flights, on average. The most expensive time of day to fly to Maine is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $1,017.

Reviews of the top 4 airlines serving from St. Louis to Maine

 
See real verified KAYAK customer reviews for airlines flying from St. Louis to Maine. 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 Maine? 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
SouthwestOverall score based on 4303 reviews
7.5Entertainment
8.6Crew
7.0Food
8.0Comfort
8.1Boarding
Airline reviews

The last 3 flights between BWI and BDL canceled the beverage service mid- way. Just say up front that the fight is too short. Thanks!

6.0 GoodAnonymous, Feb 2026
BDL - BWI
Read more Southwest reviews

The last 3 flights between BWI and BDL canceled the beverage service mid- way. Just say up front that the fight is too short. Thanks!

It was canceled. Supposedly weather. But there was no snow in Baltimore. At least we found out before driving to airport

I have not flown Southwest in awhile and had a very pleasant experience. From ticketing to boarding to the flight. The flight left on time and landed ahead of schedule. It won't be so long next time!!

The Southwest experience has definitely taken a dive from its early days. You can no longer deferentiate from other airlines. Air travel is too expensive. Southwest is no longer budget friendly. They have lost me as a loyal customer.

Flight was hours late, unable to sit next to spouse, I have had so much better experiences. Substantially better, only saving grace was that it was a short flight.

An entire day of delays. Cost lots of money. Meals and a hotel.

The WiFi and crew on the plane were good, however, the boarding experience was awful. I paid for the Choice Preferred and was boarded in group 5 so all overhead storage was full. They found room for our luggage, but further back making getting off the plane a nightmare. Also, we were in row 6 and the seats were extremely uncomfortable. Both my daughter and I had no leg room and couldn’t wait to get off the plane.

The charges were ridiculous for an hour flight and the turbulence was very scary.

Still need to work out the kinks on the new assigned seating boarding process. Otherwise, a very good flight.

WiFi did not work. Boarding with the new seating assignments took too long. The temperature in the terminal was obnoxious. +/- 80°

There’s not much to say about a one hour flight. This is a connection from LA to RNO that I missed the previous night due to a mechanical check delay on my originating flight from JFK to LAX. The short flight itself was fine. Instructions from the pilot and crew were per usual. The coffee was barely lukewarm, which possibly was purposeful so we would down it quickly. Bags were already on carousel upon reaching baggage claim, which was excellent.

Flight was warm for first few hours and quite rough

Seat was extremely hard which made even a short 1 hour 20 minute flight fairly uncomfortable.

Everything was good except wifi and a leaking drink chiller. The floor was all wet and my bag was soaked. Did not notice until debarking. Have not heard back from Delta. Even though this was leg one of an international flight in first class, they denied access to their Sky Club - very disappointing!

The staff was fine. The plane was extremely tight, and I paid for the wifi and it did not work at all. I was actually going to ask for a refund.

two hour delay and the Delta representative on the PA system was unable to understand

An awesome flight crew. FC seat cushion just doesn’t cut it for a 3+ hour flight.

2+hrs delay without any reason provided and a cramped flight

We waited an hour on the runway to get a gate in Orlando

Flight was delayed by 3-hours and their fix was… complimentary pretzels.

There was no WiFi available, there were mechanical problems with the plane and we landed at C 124, then the gate was switched to A 26, then all the way back to C126! For a 75 yo woman traveling alone, this was a difficult journey, indeed!

This trip did not start off well. The inbound flight was delayed about 20 minutes. Then, after initial onboarding, the passengers had to deplane due to a mechanical problem. That took about 30 minutes to fix and be cleared. Then, reboarding was chaotic. It took a long time to sort passengers and two passengers on standby were ticketed but there was no seat. So, they had to deplane. One of the flight crew was trying to help passengers figure out a place to put their carry-on bags and that took more time. In the end, our scheduled 10:30 am departure did not actually take off until about 12:05 pm CST. The flight itself was long but we got to Houston. Some passengers missed their connecting flights and had to rebook. Not the best of flights I've had.

Staff were good. My seat was in need of repair, but for a short flight was not problematic. Usual basic snack and drink setup that you'll find on any US carrier. Over, a decent, basic flight.

Complimentary light meal would be appreciated. But great flight crew service on all legs

Flight delayed for more than 16 hrs and no effort was spent to provide an alternate

We got delayed three hours and nobody thought to have the bathroom fixed while we were sitting waiting to board? took a full hour to have maintenance come and check it off. Had to shut the bathroom down twice so that the pilots could go to the bathroom. Everyone missed their connections.

Flight left on time and we arrived 25 minutes early! There was a gate available when we arrived so early on a busy Sunday afternoon! Flight attendants came around twice with the drinks cart.

Wonderful. Quick boarding. Early departure and we arrived 30 minutes early at our destination. Unfortunately, when you arrive early, there is still a departing aircraft at our gate. We had to park for 30 minutes until the gate was clear. So our early arrival was not really early at the gate. Otherwise it was a quick and smooth flight. Appreciated the efficiency.

Everything was great except for the boarding process. Everyone is lining up all at the same time and it’s hard to tell between the groups as they are way too large.

Women boarding passengers at the gate was absolutely rude and disrespectful of passengers. The flight attendant was absolutely delightful! Smiling and connected with the passengers. So happy. The seats are cramped and uncomfortable but I guess that’s just the way it is Communication regarding flight was excellent

It was an older plane. First Class was not especially roomy or comfortable. It was a short flight so there were no meal but they did offer mixed nuts which used to be normal but now is rare. Crew member was very polite and professional.

The chicken wrap was tiny ($13 for what looked like a 1/3 of a normal wrap?) and disgusting.

It was a train wreck but on an airplane. First off, flight was delayed then we board only to hear two announcements, First weather delays in Orlando and second backup battery warning on emergency lights. After sitting on the plane for almost 2 hours they have us deplane due to the maintenance issue. We were told they were getting another plane. In the mean time, I notice another American- Orlando flight and ask the gate agent if I can switch. He says he cant help me and I'd have to walk to A13 from A37. Really!? I get down there and get a seat only to get an announcement my original flight was RE-boarding. The Then inflight there's no communication and I notice on flightaware were circling over the Gulf of America. I call the flight attendant and of course she has no clue and apparently 5m later the pilot finally tells us about another delay. Why does American always have these service and delay issues? They are my LAST choice in flights now!

Mediocre would be best description. Food bland. Seat biz class uncomfortable to sleep. Crew never dimmed lights completely in an overnight flight to Europe. Would avoid AA if possible.

For my arriving destination, we were delayed multiple times to the point that we arrived 6 hours after we were originally scheduled. On my flight home, they overbooked and involuntarily removed passengers (including me) from the plane. It was not a good experience.

It was good experience this time. The flight was on time.

I very rarely fly American and my experience today reenforces that is the correct decision. While the staff were all very courteous, our flight was first thing in the morning so there was no reason to be delayed, yet appropriate maintenance checks weren’t completed prior to our flight so we were delayed multiple times. Not a great showing, American Airlines.

It's very confusing because Kayak has it as American Airlines, but it was Hawaiian Airlines, but operated by Alaska Airlines. I had to go to the airport for my boarding pass because American said I didn't have any trips.

Smooth flight. From the early boarding and all were on board before departure time and arrived early in ONT. Great crew. Thank you!!!!

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Everything you need to know for your flight from St. Louis to Maine

Information on your arrival and departure airports