$132 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 8/8. 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$333
Bangor
Bangor1 stop$257
Boston
Boston1 stop$328
Portland
Portland1 stop$333
Bangor
Bangor1 stop$257
Boston
Boston1 stop$328

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

Sat, Sep 12 - Wed, Sep 16
Delta Logo
2:00 pm - 9:17 pm
STL
-
BGR
6h 17m
1 stop
Delta Logo
5:17 am - 11:43 am
BGR
-
STL
7h 26m
1 stop
$257Delta
Sat, Sep 12 - Wed, Sep 16
Delta Logo
2:00 pm - 9:17 pm
STL
-
BGR
6h 17m
1 stop
Delta Logo
5:17 am - 3:54 pm
BGR
-
STL
11h 37m
2 stops
$262Delta
Wed, Sep 9 - Sat, Sep 12
United Airlines Logo
12:59 pm - 9:47 pm
STL
-
BGR
7h 48m
1 stop
United Airlines Logo
6:00 am - 11:17 am
BGR
-
STL
6h 17m
1 stop
$265United Airlines
Tue, Jul 7 - Tue, Jul 14
American Airlines Logo
2:32 pm - 10:57 pm
STL
-
BGR
7h 25m
1 stop
American Airlines Logo
6:55 am - 1:53 pm
BGR
-
STL
7h 58m
1 stop
$279American Airlines
Wed, Sep 9 - Sat, Sep 12
American Airlines Logo
6:00 am - 1:38 pm
STL
-
BGR
6h 38m
1 stop
American Airlines Logo
5:50 am - 10:29 am
BGR
-
STL
5h 39m
1 stop
$286American Airlines
Wed, Jul 8 - Wed, Jul 15
United Airlines Logo
1:13 pm - 9:47 pm
STL
-
BGR
7h 34m
1 stop
United Airlines Logo
7:20 pm - 11:44 pm
BGR
-
STL
5h 24m
1 stop
$306United Airlines
Sun, Jul 5 - Sun, Jul 12
Frontier Logo
6:34 pm - 7:46 am
STL
-
BOS
12h 12m
1 stop
Frontier Logo
11:52 am - 5:37 pm
BOS
-
STL
6h 45m
1 stop
$328Frontier
Wed, Jul 15 - Mon, Jul 20
Frontier Logo
4:57 pm - 10:57 am
STL
-
BOS
17h 00m
1 stop
Frontier Logo
10:04 am - 11:59 pm
BOS
-
STL
14h 55m
1 stop
$329Frontier
Wed, Aug 19 - Wed, Aug 26
Southwest Logo
6:40 pm - 10:15 pm
STL
-
BOS
2h 35mnonstop
Southwest Logo
10:05 am - 4:45 pm
BOS
-
STL
7h 40m
2 stops
$332Southwest
Sat, Jul 11 - Wed, Jul 15
Southwest Logo
8:45 pm - 12:20 am
STL
-
BOS
2h 35mnonstop
Southwest Logo
3:45 pm - 10:30 pm
BOS
-
STL
7h 45m
1 stop
$337Southwest
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 August.

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 3 weeks before departure, which saves you about 42% 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$132
Best time to beat the crowds but there is an average 6% increase in price.
Most popular time to fly and prices are also 3% lower on average.
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.

Top tips for finding cheap flights to Maine

  • Looking for a cheap flight? 25% of our users found tickets from St. Louis to the following destinations at these prices or less: Boston $179 one-way - $477 round-trip

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 4235 reviews
8.6Crew
7.0Food
7.5Entertainment
8.0Comfort
8.1Boarding
Airline reviews

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

4.0 OkaySteven, Jun 2026
ONT - LAS
Read more Southwest reviews

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Slow boarding, limited food and drink portions. Bad delays and turbulence

there were two flight attendants that were up front...that were the best! They get KUDOs for making my trip only fantastic. Tell them Jeff said that!

OKay. I sat in the back of the plane and it was really loud between babies and little kids, and adults who.like to talk a lot and loudly most of the flight.

Flight coming out of Buffalo was delayed, so we had to be rescheduled on another flight from Baltimore to Phoenix which means we had a long layover and got home 3.5 hours late. Shuttle to parking stopped at 10pm, so we had to pay for an Uber to the parking lot and got charged an extra day of parking since it was after midnight. Not the best experience. Long day!

Was fine, delayed and feels like southwest is always late

Horrible. Faucet in sink not working, wifi not working. Didn’t bring food or snacks

Flight was delayed before take off and at landing. Baggage took 20 minutes. Flight crew would not serve full soft drink and had to ask multiple times before receiving water.

From checking to boarding, it was a seamless experience. The service agents were so helpful. The flight crew was so pleasant.

Gate agent showed up 20 minutes before boarding and was not at all friendly. Had to take this flight due to the one on the day before being cancelled and any later options were already full with long standby lists. Despite having paid for Delta Comfort seats, Delta did not allow me (or anyone) to choose their seat. The agent assigned them for everyone just prior to boarding. Self seat selection was allowed on the original flight. Flight staff was great - very friendly.

Flight attendants were great. Cheerful, upbeat and friendly. Jet, in particular, was fantastic.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airline tickets are not cheap. You expect reliable competent service. Thanks to canceled flights and botched transfers we arrived at our destination two days late. This is not acceptable

Horrible! Several delays and then was cancelled! I spent over 24 hours in the airport and was unable to get a hotel or food voucher.

The entertainment is a bit limited, it would be better if they added some games to play besides the movies and tv shows. But the seats are comfortable and the crew is polite

This planes staff was top tier. Everything went great and had a great flight home.

Food was great. Staff was phenomenal. Seats were a bit hard and could use a lot more entertainment options as far as movies to choose from. WiFi was good. Overall great trip.

This was an overnight flight, and in the morning they did know coffee service. How you can throw passengers in a San Francisco airport at 5:40 a.m. in the morning and not giving them Coffee is a crime.

Our flight was delayed several Times due to mechanical issues. Although I understand this may happen at times, it was very inconvenient and we had to book a hotel for an overnight stay. We were traveling with my 3-yo grandson and waiting at the airport from noon until 6:30pm with no reassurance that our next rescheduled flight would depart, we had to decide what’s best for him. A day later, I found out that I may be able to demand compensation if my flight is delayed more than 4 hours. I will hav to read the fine print next time.

The pilot had to extend the flight time from san antonio to Houston to burn off fuel. This caused a lot of unnecessary stress since we had a tight connection to Aruba. And with no other flights going to Aruba we were worried about spending a night in Houston. We had to to run to our connection because of the flight crews mistake. Not happy.

weather delay of almost 2 hours then we landed and our gate wasn't available so we waited another 30 min

Flight had mechanical issues and it was delayed 30 mins - some of us boarded and then had to deplane.

technology worked well and everything ran smoothly. The seats are quite cramped so please don't try to re-engineer the cabin to squeeze more bodies on board.

Delayed flight more than I hour. When boarding we spent some additional time on the plane before takeoff ....

Flight was delayed due to connecting passengers. Lack of snack options bad. Sitting in Aisle, last cart run pulled the cart directly into my knee. Rude awakening.

We sat on plane at gate delayed without communication as to why we were just sitting there

Agency very bad had to cancelled my booking too many changes in the flight changed my flight to 1 week

Trash. Sat on the runway for 40 mins…missed connecting flight because of it now I’m stuck. Thanks…a whole fkn lot.

The flight was delayed significantly and we sat on runway after landing for awhile. Best thing was the flight attendant, Jenny, in first class, who was very professional and attentive. She was excellent - the rest of the flight was not.

Awfully rude American worker at door when we started boarding flight. Then, walk into a blazing hot airplane with no air conditioning until twenty minutes into the flight. Free entertainment was non existent! My husband, along with the fellow passenger in our row, and I could not get entertainment to work, no WIFI! Really?? Been flying American a long time. Was very disappointed.

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

Information on your arrival and departure airports