What is the cheapest airline that flies from Maine to Missouri?

Frontier, United Airlines, and American Airlines are the most popular carriers operating from Maine to Missouri

What airlines fly to Missouri?

American Airlines, Delta and United Airlines are the top three most popular airlines that fly to Missouri from Maine according to our data. American Airlines is the first choice among our users, with 55% of people opting to fly with this airline when traveling to Missouri. Keep in mind that there are 4 different airlines that fly to Missouri on a routine basis, so you have a few additional options to choose from.

How many flights depart from Maine to Missouri on average per week?

58 flights are operational weekly from Maine to Missouri as of November 2025. The most popular departure day for this route is Mon, with 22% of flights per week taking off on this day.

How long is the flight from Maine to Missouri?

The flight from Maine to Missouri depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Portland (a popular airport in Maine) to St. Louis (the most popular airport in Missouri), then the flight time is 5h 43m on average. If you fly from Bangor (another popular airport in Maine) to St. Louis, then the average flight time is 8h 37m.

When did momondo last update prices for flights from Maine to Missouri?

Prices for flights from Maine to Missouri are updated daily.

How many operators does momondo search for flights from Maine to Missouri?

There are 6 operators available for flights from Maine to Missouri as of November 2025.

How old do you have to be to fly from Maine to Missouri?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Maine to Missouri.

What documentation or ID do you need to fly to Missouri?

The necessary travel and health documents for your Missouri trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$75 Cheap Flights from Maine to Missouri in 2025/26

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Find the cheapest flights from Maine to Missouri

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

7:00 am - 3:33 pmBOS-MCI

9h 33m1 stop

11:26 am - 11:57 pmMCI-BOS

11h 31m1 stop

$252Spirit Airlines

Find Deal

Fri, Jan 9 - Mon, Jan 12

5:45 am - 11:51 amBOS-MCI

31h 06m2 stops

3:47 pm - 10:01 amMCI-BOS

17h 14m1 stop

$256Multiple Airlines

Find Deal

Sun, Dec 14 - Mon, Dec 15

9:45 am - 5:09 pmBOS-SGF

8h 24m1 stop

12:26 pm - 8:45 pmSGF-BOS

7h 19m1 stop

$269American Airlines

Find Deal

Thu, Jan 22 - Sun, Jan 25

12:48 pm - 4:37 pmPWM-STL

4h 49m1 stop

6:35 am - 12:03 pmSTL-PWM

4h 28m1 stop

$273Delta

Find Deal

Sat, Jan 31 - Wed, Feb 4

4:34 pm - 11:04 pmBGR-MCI

7h 30m1 stop

1:55 pm - 11:25 pmMCI-BGR

8h 30m2 stops

$274Delta

Find Deal

Fri, Jan 9 - Mon, Jan 12

6:00 am - 10:41 amPWM-STL

5h 41m1 stop

8:30 am - 2:31 pmSTL-PWM

5h 01m1 stop

$286United Airlines

Find Deal

Thu, Jan 15 - Sun, Jan 18

6:00 am - 2:22 pmPWM-MCI

9h 22m2 stops

12:35 pm - 6:54 pmMCI-PWM

5h 19m1 stop

$290United Airlines

Find Deal

Sat, Jan 31 - Sat, Feb 7

12:55 pm - 9:10 pmBOS-COU

9h 15m1 stop

11:56 am - 11:44 pmCOU-BOS

10h 48m1 stop

$305American Airlines

Find Deal

Thu, Jan 8 - Thu, Jan 15

7:10 am - 9:30 amBOS-STL

3h 20mnonstop

5:55 pm - 9:25 pmSTL-BOS

2h 30mnonstop

$350Southwest

Find Deal

Sat, Jan 10 - Sun, Jan 18

6:25 am - 8:45 amBOS-STL

3h 20mnonstop

5:55 pm - 9:25 pmSTL-BOS

2h 30mnonstop

$351Southwest

Find Deal

Tue, Jan 6 - Tue, Jan 13

Delta flights from Maine to Missouri

Our best Delta deals on Maine to Missouri flight tickets

Delta

Jan 31

PWM12:48 pmPortland

4h 49m

1 stop

STL4:37 pmLambert-St Louis

Feb 4

STL6:35 amLambert-St Louis

4h 28m

1 stop

PWM12:03 pmPortland

$273

Find similar

Delta

Jan 9

BGR4:34 pmBangor

7h 30m

1 stop

MCI11:04 pmKansas City

Jan 12

MCI1:55 pmKansas City

8h 30m

2 stops

BGR11:25 pmBangor

$274

Find similar

Delta

Jan 31

PWM1:13 pmPortland

5h 18m

1 stop

STL5:31 pmLambert-St Louis

Feb 4

STL1:00 pmLambert-St Louis

10h 20m

2 stops

PWM12:20 amPortland

$278

Find similar

United Airlines flights from Maine to Missouri

Our best United Airlines deals on Maine to Missouri flight tickets

United Airlines

Jan 15

PWM6:00 amPortland

5h 41m

1 stop

STL10:41 amLambert-St Louis

Jan 18

STL8:30 amLambert-St Louis

5h 01m

1 stop

PWM2:31 pmPortland

$286

Find similar

United Airlines

Jan 31

PWM6:00 amPortland

9h 22m

2 stops

MCI2:22 pmKansas City

Feb 7

MCI12:35 pmKansas City

5h 19m

1 stop

PWM6:54 pmPortland

$290

Find similar

United Airlines

Jan 15

PWM7:27 pmPortland

5h 32m

1 stop

STL11:59 pmLambert-St Louis

Jan 18

STL8:05 amLambert-St Louis

9h 45m

2 stops

PWM6:50 pmPortland

$291

Find similar

Fly from

Fly to

Route

Depart

Return

Price

BostonKansas City

BOS - MCI

BOSMCI

Boston Logan Intl

Fri 1/9

7:00 am-3:33 pm

1 stop9h 33m

Kansas City

Mon 1/12

11:26 am-11:57 pm

1 stop11h 31m

$252

BostonKansas City

BOS - MCI

BOSMCI

Boston Logan Intl

Sun 12/14

5:45 am-11:51 am

2 stops31h 06m

Kansas City

Mon 12/15

3:47 pm-10:01 am

1 stop17h 14m

$256

BostonSpringfield

BOS - SGF

BOSSGF

Boston Logan Intl

Thu 1/22

9:45 am-5:09 pm

1 stop8h 24m

Springfield-Branson

Sun 1/25

12:26 pm-8:45 pm

1 stop7h 19m

$269

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Sat 1/31

12:48 pm-4:37 pm

1 stop4h 49m

Lambert-St Louis

Wed 2/4

6:35 am-12:03 pm

1 stop4h 28m

$273

BangorKansas City

BGR - MCI

BGRMCI

Bangor

Fri 1/9

4:34 pm-11:04 pm

1 stop7h 30m

Kansas City

Mon 1/12

1:55 pm-11:25 pm

2 stops8h 30m

$274

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Thu 1/15

6:00 am-10:41 am

1 stop5h 41m

Lambert-St Louis

Sun 1/18

8:30 am-2:31 pm

1 stop5h 01m

$286

PortlandKansas City

PWM - MCI

PWMMCI

Portland

Sat 1/31

6:00 am-2:22 pm

2 stops9h 22m

Kansas City

Sat 2/7

12:35 pm-6:54 pm

1 stop5h 19m

$290

BostonColumbia

BOS - COU

BOSCOU

Boston Logan Intl

Thu 1/8

12:55 pm-9:10 pm

1 stop9h 15m

Columbia Regional

Thu 1/15

11:56 am-11:44 pm

1 stop10h 48m

$305

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Sat 1/10

7:10 am-9:30 am

Nonstop3h 20m

Lambert-St Louis

Sun 1/18

5:55 pm-9:25 pm

Nonstop2h 30m

$350

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 1/6

6:25 am-8:45 am

Nonstop3h 20m

Lambert-St Louis

Tue 1/13

5:55 pm-9:25 pm

Nonstop2h 30m

$351

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Maine to Missouri

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Missouri?

In general, February is the cheapest month to fly from Maine to Missouri. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $269. If you aren’t able to travel to Missouri during the month of February, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $340.

What is the cheapest day to depart on your flight to Missouri?

The cheapest day to depart from Maine to Missouri is on a Tuesday when prices can be found for as low as $443. Flights from Maine to Missouri on a Monday will generally be more expensive and average around $638. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Missouri?

According to our data, the cheapest time of day to fly to Missouri is in the afternoon. momondo users have found flights departing from Maine to Missouri in the afternoon for as low as $441. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Missouri are more costly at noon, with an average ticket price of $609. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on Maine to Missouri flights?

You could potentially save up to 30% on your flight if you consider stops on a Maine to Missouri flight.

Cheap Maine to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Maine to Missouri

Fastest flight time	3h 05m
Direct flights	Every day
Airports in Missouri	1 airport

The fastest flight from Maine to Missouri takes 3h 05m

Direct flights go from Maine to Missouri every day.

There is 1 airport near Missouri: Lambert-St Louis (STL)

Search flight deals

When did momondo last update prices for flights from Maine to Missouri?
Prices for flights from Maine to Missouri are updated daily.
How many operators does momondo search for flights from Maine to Missouri?
There are 6 operators available for flights from Maine to Missouri as of November 2025.
How old do you have to be to fly from Maine to Missouri?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Maine to Missouri.
What documentation or ID do you need to fly to Missouri?
The necessary travel and health documents for your Missouri trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Maine to Missouri

Compare and see reviews for airlines that fly from Maine to Missouri with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $173	Free Cancellation	Rating 7.9 7,998 reviews	Search Delta flights
Southwest	PriceFrom $237	Free Cancellation	Rating 8.0 4,252 reviews	Search Southwest flights
American Airlines	PriceFrom $243	Free Cancellation	Rating 7.2 11,042 reviews	Search American Airlines flights
United Airlines	PriceFrom $268	Free Cancellation	Rating 7.4 9,044 reviews	Search United Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Maine to Missouri?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Missouri from Maine.

Can I find flights from Maine to Missouri with flexible booking policies on momondo?

Flights from Maine to Missouri with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Maine to Missouri?

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Missouri from Maine.

I’m not ready to book a flight from Maine to Missouri right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Maine to Missouri now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Missouri and let you know when they change.