$138 Find Cheap Flights from St. Louis to Maine - Compare and Save

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 8/4. 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

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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$275
Bangor
Bangor1 stop$239
Boston
Boston2 stops$347
Portland
Portland1 stop$275
Bangor
Bangor1 stop$239
Boston
Boston2 stops$347

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, Aug 22 - Tue, Aug 25
United Airlines Logo
1:05 pm - 9:58 pm
STL
-
BGR
7h 53m
1 stop
United Airlines Logo
7:17 pm - 11:38 pm
BGR
-
STL
5h 21m
1 stop
$239United Airlines
Sat, Aug 22 - Sat, Aug 29
Delta Logo
2:00 pm - 9:38 pm
STL
-
BGR
6h 38m
1 stop
Delta Logo
6:00 am - 2:33 pm
BGR
-
STL
9h 33m
2 stops
$262Delta
Sat, Aug 22 - Sat, Aug 29
United Airlines Logo
1:05 pm - 9:58 pm
STL
-
BGR
7h 53m
1 stop
United Airlines Logo
4:43 pm - 10:00 pm
BGR
-
STL
6h 17m
1 stop
$267United Airlines
Tue, Aug 4 - Tue, Aug 11
Delta Logo
3:39 pm - 11:13 pm
STL
-
PWM
6h 34m
1 stop
Delta Logo
11:50 am - 4:44 pm
PWM
-
STL
5h 54m
1 stop
$275Delta
Tue, Aug 18 - Sat, Aug 22
Southwest Logo
1:40 pm - 9:10 pm
STL
-
PWM
6h 30m
1 stop
Southwest Logo
5:40 am - 10:50 am
PWM
-
STL
6h 10m
1 stop
$276Southwest
Mon, Sep 14 - Wed, Sep 23
American Airlines Logo
9:58 am - 5:35 pm
STL
-
BGR
6h 37m
1 stop
American Airlines Logo
2:08 pm - 9:17 pm
BGR
-
STL
8h 09m
1 stop
$279American Airlines
Tue, Aug 18 - Sat, Aug 22
Southwest Logo
1:40 pm - 9:10 pm
STL
-
PWM
6h 30m
1 stop
Southwest Logo
5:40 am - 12:35 pm
PWM
-
STL
7h 55m
2 stops
$282Southwest
Wed, Sep 9 - Sat, Sep 12
American Airlines Logo
9:58 am - 5:35 pm
STL
-
BGR
6h 37m
1 stop
American Airlines Logo
5:50 am - 10:29 am
BGR
-
STL
5h 39m
1 stop
$286American Airlines
Thu, Jul 30 - Tue, Aug 4
Frontier Logo
7:10 pm - 9:09 am
STL
-
BOS
36h 59m
2 stops
Frontier Logo
10:04 am - 11:59 pm
BOS
-
STL
14h 55m
1 stop
$347Frontier
Mon, Aug 3 - Thu, Aug 6
Frontier Logo
8:08 pm - 9:09 am
STL
-
BOS
36h 01m
2 stops
Frontier Logo
11:59 am - 5:37 pm
BOS
-
STL
6h 38m
1 stop
$348Frontier
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 14 weeks before departure.

Find deals

Good to know

Low seasonFebruary
Cheapest flight$138
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 Portland

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 $215 one-way - $488 round-trip

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

Information on your arrival and departure airports

St. Louis (STL)