$125 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 7/5. 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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Cheap Flights from St. Louis to Maine

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Portland
Portland1 stop$319
Bangor
Bangor1 stop$286
Boston
Boston2 stops$335
Portland
Portland1 stop$319
Bangor
Bangor1 stop$286
Boston
Boston2 stops$335

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

Tue, Jul 7 - Wed, Sep 2
Delta Logo
5:00 pm - 11:11 pm
STL
-
BGR
5h 11m
1 stop
Delta Logo
6:00 am - 11:54 am
BGR
-
STL
6h 54m
1 stop
$257Delta
Tue, Jul 7 - Wed, Sep 2
Delta Logo
5:00 pm - 11:11 pm
STL
-
BGR
5h 11m
1 stop
Delta Logo
6:00 am - 3:57 pm
BGR
-
STL
10h 57m
2 stops
$262Delta
Tue, Sep 29 - Mon, Oct 5
American Airlines Logo
6:20 am - 12:29 pm
STL
-
BGR
5h 09m
1 stop
American Airlines Logo
6:01 pm - 11:41 pm
BGR
-
STL
6h 40m
1 stop
$279American Airlines
Sat, Aug 29 - Tue, Sep 8
American Airlines Logo
5:23 am - 1:10 pm
STL
-
BGR
6h 47m
1 stop
American Airlines Logo
5:45 am - 10:42 am
BGR
-
STL
5h 57m
1 stop
$286American Airlines
Sun, Jul 12 - Wed, Jul 15
Delta Logo
9:26 am - 4:23 pm
STL
-
BGR
5h 57m
1 stop
Delta Logo
5:20 am - 11:47 am
BGR
-
STL
7h 27m
1 stop
$287Delta
Sat, May 30 - Wed, Jun 3
United Airlines Logo
4:48 pm - 11:15 pm
STL
-
BGR
5h 27m
1 stop
United Airlines Logo
7:06 pm - 11:35 pm
BGR
-
STL
5h 29m
1 stop
$288United Airlines
Tue, Aug 4 - Mon, Aug 10
Multiple Airlines Logo
4:09 pm - 1:08 pm
STL
-
BGR
19h 59m
1 stop
Multiple Airlines Logo
12:58 pm - 11:59 pm
BGR
-
STL
12h 01m
1 stop
$301Multiple Airlines
Tue, Jun 2 - Tue, Jun 9
United Airlines Logo
6:00 am - 1:25 pm
STL
-
PWM
6h 25m
1 stop
United Airlines Logo
5:15 am - 12:11 pm
PWM
-
STL
7h 56m
2 stops
$324United Airlines
Wed, Jul 8 - Tue, Jul 14
Southwest Logo
7:10 pm - 10:40 pm
STL
-
BOS
2h 30mnonstop
Southwest Logo
6:25 pm - 8:30 pm
BOS
-
STL
3h 05mnonstop
$337Southwest
Tue, Aug 11 - Tue, Aug 18
Southwest Logo
10:45 am - 9:10 pm
STL
-
PWM
9h 25m
2 stops
Southwest Logo
6:15 pm - 10:10 pm
PWM
-
STL
4h 55m
1 stop
$348Southwest
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.

How much is a round-trip flight from St. Louis to Maine?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from St. Louis to Maine departing in July.

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 October, when tickets cost $151 (return) on average. On the other hand, the most expensive months are January and March, when the average cost of round-trip tickets is $476 and $317 respectively.

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 44% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

Good to know

Low seasonFebruary
Cheapest flight$125
Best time to beat the crowds but there is an average 8% increase in price.
Most popular time to fly with an average 1% 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.

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.
7.9
SouthwestOverall score based on 4288 reviews
8.1Boarding
8.0Comfort
8.6Crew
7.0Food
7.5Entertainment
Airline reviews

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

4.0 OkayAnonymous, May 2026
MSY - HOU
Read more Southwest reviews

One major problem that was very unprofessional and uncalled for. Plane landed and we had to wait 20 minutes to get off the plane since they were waiting for someone to come to the gate to drive the jetway. Southwest couldn't have someone available and waiting for the plane to land? Is there only one person in Hobby airport who knows to drive the jetway? Was he at lunch? In the bar? Uncomfortable and uncalled for!

The checking experience in Orlando was terrible, almost missed the flight. Too many travelers and Southwest completely understaffed.

I'm glad it wasn't only 75% full because I could get a good seat

if I was good. Not happy that I have to pay extra money to get the seat I need for lake room, but I guess that’s a sign of the times.

Seats were very comfortable. They tilted back. Drinks and snacks were free and served 3 times. Attendants were awesome.

Plane was clean and comfortable. Flight attendants and gate staff were professional, friendly and efficient. Boarding and deplaning were orderly and efficient. All in all, the typical excellent Southwest experience.

Truly terrible. Will never willingly fly southwest again. Seats are worse than before they switched to assigned seating. One flight attendant was the opposite of helpful (rude, unhelpful, dismissive, and as my stranger seatmate said unprompted: a total prick). This caused me, 15 minutes into the flight, to book an alternate return flight home on a competing airline (first class 1.2k purchase instead of my existing planned flight) just so I would not have to ever be on that aircraft, with that terrible service person, with those horrific seats ever again.

Not having a five hour delay with little notice! The crew was very kind, though, and just as tired as we passengers were. The flight didn't depart until nearly 1 am...and no reason was ever given.

The entire experience from boarding to landing was amazing! The crew were very friendly. Will definitely be back.

no service at all due to turbulence. they should've at least given us snacks, there were only 10 people on the entire flight.

I continue to be satisfied with Delta’s excellent service out of LGA. The digit id works well and gets me through security in no time. Whenever possible, I choose Delta.

Was revoked with Jet Blue due to delay from Kenya Air

Enjoyed it very much. Especially liked the free WiFi that Delta offers.

Smooth flight. Left on time, and got in 15 minutes early. Onboard video was great

For some reason, TSA Atlanta didn’t have my bag on the flight on time and they don’t have to provide Delta a reason for that.

WiFi didn’t work on two of four planes. Flight attendants were not overly friendly or welcoming. Planes were extremely slow to board and deplane.

Delta does a great job with entertainment and free wifi. I can still be in touch with my colleagues while in the air.

Aside from a completely packed plane, I really have no complaints.

Bus to plane was delayed for no apparent reason and our luggage was still on the belt when they shut it off. Took about 20 minutes to turn it back on to get our luggage.

It was a pleasant surprise to have complimentary Wi-Fi on the flight

Late- that’s what United does best. Missed my connection, rebooked to a flight 17 hours later and had to spend $500 on a hotel. What did I get? A $15 meal voucher. What can you get in an airport for $15. I hate United so much.

Late plane. Only one crew on the ground so we b had to wait for Denver flight to come in, board, and depart. At 78 yrs of age I was not pleased trying to get my connection. What really made me angry was the notification you sent me to hurry up or I would miss my connection. Why tell me to hurry up when you got me in late. It was not a good way of treating customers.

No complaints other than luggage carousel was incorrectly guiding passengers to the wrong carousel on the screen.

We were a little disappointed to not be able to complete check in online without uploading pics of passports. Also we have KTN's and they weren't on our boarding passes when we got to security. Had to trek back to counter to have them fix.

Excellent service in Polaris class IAD to ZRH. Arrived rested and well fed after the overnight flight.

It's a short hop. My carryon was checked at the gate, I didn't have to drag it all over the airport. Excellent wheelchair assist.

It was good overall except from Omaha to Denver when flight a was a repeatedly delayed apparently due to some issue at Denver. Communications could have been handled better. I had to board then deboard with luggage and board again

Left an hour and a half after the listed time. Up side was it had TV screens on the seat.

No screens or meal options. Freezing cold. Dirty seats. Left late.

O’hsre taxi and deboarding took 40 minutes. Needed 20 minutes extra time between connecting flights to avoid running through terminal.

The wifi experience is awful. I had to try again and again, taking over 30 minutes, to connect to the wifi. I had to watch the same two ads over and over until I was finally successful. Once connected, it was anything but "high speed" and disconnected at least three times during the flight.

Fine. Nothing to write home about. The plane left on time, and arrived on time.

I was downgraded from first class to coach due to an airplane change. They pulled me out of line and I was the very last person to board the plane stuck in the middle seat with no overhead place to put my carry-.on. Very poor customer service.

Seat comfort was poor (no lumbar or lower back support).

The airplane seats were spacious and comfortable, and the flight attendants were friendly and attentive. The food was delicious like never before. The blankets and toiletries were thoughtfully provided. The captain's navigation was steady and reliable. In short, having flown with Starlux, I won't consider any other airline next time.

STOP MAKING THE SEATING SO CRAMPED. WE NEED A PASSENGER BILL OF RIGHTS!

The passenger in front of of me reclined their seat back all the way the entire flight. Their headrest was in my face the entire flight! I barely had room for the little plastic cup of water to fit on my tray table; can you make the seats and space between the rows any smaller??? You can’t even get up to use the restroom! Worst flight I’ve had in a very long time!

We had several flights and they were all on-time and flawless

My Frequent Flyer nber wasn't put on as I was told it was..... This resulted in a last group boarding and no priority tags on My bags.

Terrible steward... Plane was quite empty... I asked to move "back" in the plane and the steward said no... Unnecessary power trip of mediocre people.

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

Information on your arrival and departure airports