What airlines fly to Portland, Maine?

American Airlines, Delta and Southwest are the top three most popular airlines that fly to Portland, Maine from Missouri according to our data. American Airlines is the first choice among our users, with 44% of people opting to fly with this airline when traveling to Portland, Maine. Keep in mind that there are 6 different airlines that fly to Portland, Maine on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Portland, Maine?

The flight from Missouri to Portland, Maine depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from St. Louis (a popular airport in Missouri) to Boston (the most popular airport in Portland, Maine), then the flight time is 2h 25m on average. If you fly from Kansas City (another popular airport in Missouri) to Boston, then the average flight time is 3h.

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

Delta and United Airlines are the most popular carriers operating from Missouri to Portland

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

Prices for flights from Missouri to Portland Airport are updated daily.

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

As of December 2025, there are 4 operators available to choose from for flights from Missouri to Portland Airport.

How old do you have to be to fly from Missouri to Portland Airport?

The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Portland Airport.

What documentation or ID do you need to fly to Portland Airport?

The travel and health documents required for your trip to Portland Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portland Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

$141 Cheap Flights from Missouri to Portland in 2025/26

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

5:42 pm - 10:49 am

STL

PWM

40h 07m2 stops

11:02 am - 11:33 pm

PWM

STL

13h 31m1 stop

$296Multiple Airlines

Sat, Jan 24 - Sat, Jan 31

8:00 am - 2:39 pm

MCI

PWM

5h 39m1 stop

4:10 pm - 9:59 pm

PWM

MCI

6h 49m1 stop

$313United Airlines

Tue, Jan 27 - Tue, Feb 10

12:45 pm - 10:07 pm

SGF

PWM

8h 22m1 stop

7:00 am - 12:15 pm

PWM

SGF

6h 15m1 stop

$314American Airlines

Thu, Jan 29 - Sun, Feb 1

11:34 am - 10:54 pm

MCI

PWM

10h 20m2 stops

5:20 am - 10:13 am

PWM

MCI

5h 53m1 stop

$318American Airlines

Tue, Jan 27 - Tue, Feb 10

10:50 am - 11:43 pm

SGF

PWM

11h 53m2 stops

7:00 am - 12:15 pm

PWM

SGF

6h 15m1 stop

$319American Airlines

Thu, Jan 29 - Sun, Feb 1

5:48 am - 4:37 pm

MCI

PWM

9h 49m2 stops

5:20 am - 1:05 pm

PWM

MCI

8h 45m2 stops

$323American Airlines

Tue, Jan 27 - Tue, Feb 10

5:04 pm - 9:07 am

MCI

PWM

15h 03m1 stop

9:47 am - 4:09 pm

PWM

MCI

31h 22m1 stop

$334Multiple Airlines

Thu, Jan 8 - Mon, Jan 12

6:35 am - 12:08 pm

STL

PWM

4h 33m1 stop

12:48 pm - 4:37 pm

PWM

STL

4h 49m1 stop

$335Delta

Sat, Jan 24 - Sat, Jan 31

11:23 am - 10:27 pm

STL

PWM

10h 04m2 stops

1:13 pm - 11:25 pm

PWM

STL

11h 12m2 stops

$345Delta

Sat, Jan 24 - Sat, Jan 31

5:04 pm - 9:07 am

MCI

PWM

15h 03m1 stop

5:06 pm - 4:09 pm

PWM

MCI

48h 03m2 stops

$350Multiple Airlines

Thu, Jan 8 - Mon, Jan 12

Delta flights from Missouri to Portland, Maine

Our best Delta deals on Missouri to Portland, Maine flight tickets

Delta

Jan 21

STL10:19 amLambert-St Louis

11h 08m

2 stops

PWM10:27 pmPortland

Jan 26

PWM2:35 pmPortland

10h 02m

2 stops

STL11:37 pmLambert-St Louis

$327

Find similar

Delta

Jan 24

STL6:35 amLambert-St Louis

4h 33m

1 stop

PWM12:08 pmPortland

Jan 31

PWM12:48 pmPortland

4h 49m

1 stop

STL4:37 pmLambert-St Louis

$335

Find similar

Delta

Jan 24

STL11:23 amLambert-St Louis

10h 04m

2 stops

PWM10:27 pmPortland

Jan 31

PWM1:13 pmPortland

11h 12m

2 stops

STL11:25 pmLambert-St Louis

$345

Find similar

American Airlines flights from Missouri to Portland, Maine

Our best American Airlines deals on Missouri to Portland, Maine flight tickets

American Airlines

Jan 29

SGF12:45 pmSpringfield-Branson

8h 22m

1 stop

PWM10:07 pmPortland

Feb 1

PWM7:00 amPortland

6h 15m

1 stop

SGF12:15 pmSpringfield-Branson

$314

Find similar

American Airlines

Jan 27

MCI11:34 amKansas City

10h 20m

2 stops

PWM10:54 pmPortland

Feb 10

PWM5:20 amPortland

5h 53m

1 stop

MCI10:13 amKansas City

$318

Find similar

American Airlines

Jan 29

SGF10:50 amSpringfield-Branson

11h 53m

2 stops

PWM11:43 pmPortland

Feb 1

PWM7:00 amPortland

6h 15m

1 stop

SGF12:15 pmSpringfield-Branson

$319

Find similar

momondo Fare Finder

Use the filters below to find and compare flights from Missouri to Portland, Maine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Sat 1/24

5:42 pm-10:49 am

2 stops40h 07m

Portland

Sat 1/31

11:02 am-11:33 pm

1 stop13h 31m

$296

Kansas CityPortland

MCI - PWM

MCIPWM

Kansas City

Tue 1/27

8:00 am-2:39 pm

1 stop5h 39m

Portland

Tue 2/10

4:10 pm-9:59 pm

1 stop6h 49m

$313

SpringfieldPortland

SGF - PWM

SGFPWM

Springfield-Branson

Thu 1/29

12:45 pm-10:07 pm

1 stop8h 22m

Portland

Sun 2/1

7:00 am-12:15 pm

1 stop6h 15m

$314

Kansas CityPortland

MCI - PWM

MCIPWM

Kansas City

Tue 1/27

11:34 am-10:54 pm

2 stops10h 20m

Portland

Tue 2/10

5:20 am-10:13 am

1 stop5h 53m

$318

SpringfieldPortland

SGF - PWM

SGFPWM

Springfield-Branson

Thu 1/29

10:50 am-11:43 pm

2 stops11h 53m

Portland

Sun 2/1

7:00 am-12:15 pm

1 stop6h 15m

$319

Kansas CityPortland

MCI - PWM

MCIPWM

Kansas City

Tue 1/27

5:48 am-4:37 pm

2 stops9h 49m

Portland

Tue 2/10

5:20 am-1:05 pm

2 stops8h 45m

$323

Kansas CityPortland

MCI - PWM

MCIPWM

Kansas City

Thu 1/8

5:04 pm-9:07 am

1 stop15h 03m

Portland

Mon 1/12

9:47 am-4:09 pm

1 stop31h 22m

$334

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Sat 1/24

6:35 am-12:08 pm

1 stop4h 33m

Portland

Sat 1/31

12:48 pm-4:37 pm

1 stop4h 49m

$335

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Sat 1/24

11:23 am-10:27 pm

2 stops10h 04m

Portland

Sat 1/31

1:13 pm-11:25 pm

2 stops11h 12m

$345

Kansas CityPortland

MCI - PWM

MCIPWM

Kansas City

Thu 1/8

5:04 pm-9:07 am

1 stop15h 03m

Portland

Mon 1/12

5:06 pm-4:09 pm

2 stops48h 03m

$350

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 19 resultsSorted by cheapest first

How to get the cheapest flight ticket from Missouri to Portland, Maine

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 Portland, Maine?

The cheapest month to fly to Portland, Maine from Missouri is in February. Flight prices, which tend to average around $386, are often lower during this time because this is during the off-season. If you aren’t able to travel to Portland, Maine during the month of February, then flying in December is also cheap. Prices for this month can be found on momondo for an average of $386.

What is the cheapest day to depart on your flight to Portland, Maine?

On average, the least expensive day to fly to Portland, Maine from Missouri is on a Tuesday. momondo users have found tickets for Tuesday departures for as low as $375. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Friday is the most expensive day to depart from Missouri because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $456.

What is the cheapest time of day to depart on your flight to Portland, Maine?

In the evening is the cheapest time of day to fly from Missouri to Portland, Maine when you can find flight prices for as low as $285. Flying to Portland, Maine in the evening is an ideal time because this is during off-peak travel hours. Try not to purchase tickets at noon because they tend to be around $436. Of course, these prices can vary depending on the time of year and what airport you fly to.

How far in advance should I book a flight to Portland, Maine?

You are more likely to see cheaper flights to Portland, Maine from Missouri when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland, Maine for around $437 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland, Maine from Missouri for as low as $339 on momondo.

Cheap Missouri to Portland, Maine flight deals and tips

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

Fastest flight time	4h 55m
Direct flights	None

The fastest flight from Missouri to Portland, Maine takes 4h 55m

There are no direct flights from Missouri to Portland, Maine. There are no popular flight routes from Missouri to Portland, Maine.

Search flight deals

When did momondo last update prices for flights from Missouri to Portland Airport?
Prices for flights from Missouri to Portland Airport are updated daily.
How many operators does momondo search for flights from Missouri to Portland Airport?
As of December 2025, there are 4 operators available to choose from for flights from Missouri to Portland Airport.
How old do you have to be to fly from Missouri to Portland Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Missouri to Portland Airport.
What documentation or ID do you need to fly to Portland Airport?
The travel and health documents required for your trip to Portland Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Portland Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from Missouri to Portland, Maine

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $128	Free Cancellation	Rating 7.9 8,018 reviews	Search Delta flights
United Airlines	PriceFrom $212	Free Cancellation	Rating 7.4 9,116 reviews	Search United Airlines flights
American Airlines	PriceFrom $268	Free Cancellation	Rating 7.2 11,068 reviews	Search American Airlines flights
Southwest	PriceFrom $284	Free Cancellation	Rating 8.0 4,258 reviews	Search Southwest flights

North Conway

Boothbay Harbor

Jackson

Conway

Freeport

Lewiston

Brunswick

Bartlett

Gorham

Auburn

Windham

Intervale

Oxford

Bath

Georgetown

Falmouth

Tamworth

Why use momondo?

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

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 Portland from Missouri.

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

Yes. All flights to Portland from Missouri on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Missouri to Portland flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Portland, momondo offers a useful price alert feature which will track prices for flights to Portland from Missouri and alert you when they change.