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

Prices for flights from Portland Airport to Great Falls Airport refresh daily.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Great Falls Airport.

What documentation or ID do you need to fly to Great Falls Airport?

The required travel and health documents for your Great Falls Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Great Falls Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$378 Cheap Flights from Portland to Great Falls in 2026

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Find the cheapest flights from Portland, Maine to Great Falls

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:23 pm - 9:18 pm

PWM

GTF

7h 55m

1 stop

6:15 am - 3:41 pm

GTF

PWM

7h 26m

1 stop

$678United Airlines

mar., mai 12 - mar., mai 19

3:23 pm - 9:18 pm

PWM

GTF

7h 55m

1 stop

6:15 am - 3:41 pm

GTF

PWM

7h 26m

1 stop

$683United Airlines

lun., mai 11 - mar., mai 19

6:00 am - 1:34 pm

PWM

GTF

9h 34m

2 stops

6:15 am - 3:41 pm

GTF

PWM

7h 26m

1 stop

$703United Airlines

mer., mai 13 - mar., mai 19

6:00 am - 1:34 pm

PWM

GTF

9h 34m

2 stops

6:15 am - 3:41 pm

GTF

PWM

7h 26m

1 stop

$707United Airlines

mar., mai 12 - mar., mai 19

6:00 am - 9:18 pm

PWM

GTF

17h 18m

2 stops

6:15 am - 8:49 am

GTF

PWM

24h 34m

2 stops

$747United Airlines

mar., mai 12 - mar., mai 19

4:50 pm - 9:18 pm

PWM

GTF

30h 28m

2 stops

2:35 pm - 8:49 am

GTF

PWM

16h 14m

2 stops

$767United Airlines

lun., mai 11 - mar., mai 19

4:50 pm - 9:18 pm

PWM

GTF

30h 28m

2 stops

6:15 am - 3:41 pm

GTF

PWM

7h 26m

1 stop

$768United Airlines

lun., mai 11 - mar., mai 19

4:50 pm - 9:18 pm

PWM

GTF

30h 28m

3 stops

6:15 am - 8:49 am

GTF

PWM

24h 34m

2 stops

$777United Airlines

mar., mai 12 - mar., mai 19

4:50 pm - 9:18 pm

PWM

GTF

30h 28m

3 stops

6:15 am - 8:49 am

GTF

PWM

24h 34m

2 stops

$839United Airlines

lun., mai 11 - mar., mai 19

5:15 am - 1:41 pm

PWM

GTF

10h 26m

2 stops

2:37 pm - 9:41 pm

GTF

PWM

29h 04m

2 stops

$843United Airlines

mar., juil. 21 - ven., août 7

United Airlines flights from Portland, Maine to Great Falls

Our best United Airlines deals on Portland, Maine to Great Falls flight tickets

United Airlines

May 12

PWM3:23 pmPortland

7h 55m

1 stop

GTF9:18 pmGreat Falls

May 19

GTF6:15 amGreat Falls

7h 26m

1 stop

PWM3:41 pmPortland

$678

United Airlines

May 11

PWM3:23 pmPortland

7h 55m

1 stop

GTF9:18 pmGreat Falls

May 19

GTF6:15 amGreat Falls

7h 26m

1 stop

PWM3:41 pmPortland

$683

United Airlines

May 13

PWM6:00 amPortland

9h 34m

2 stops

GTF1:34 pmGreat Falls

May 19

GTF6:15 amGreat Falls

7h 26m

1 stop

PWM3:41 pmPortland

$703

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

mar. 5/12

3:23 pm-9:18 pm

1 stop7h 55m

Great Falls

mar. 5/19

6:15 am-3:41 pm

1 stop7h 26m

$678

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

lun. 5/11

3:23 pm-9:18 pm

1 stop7h 55m

Great Falls

mar. 5/19

6:15 am-3:41 pm

1 stop7h 26m

$683

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

mer. 5/13

6:00 am-1:34 pm

2 stops9h 34m

Great Falls

mar. 5/19

6:15 am-3:41 pm

1 stop7h 26m

$703

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

mar. 5/12

6:00 am-1:34 pm

2 stops9h 34m

Great Falls

mar. 5/19

6:15 am-3:41 pm

1 stop7h 26m

$707

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

mar. 5/12

6:00 am-9:18 pm

2 stops17h 18m

Great Falls

mar. 5/19

6:15 am-8:49 am

2 stops24h 34m

$747

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

lun. 5/11

4:50 pm-9:18 pm

2 stops30h 28m

Great Falls

mar. 5/19

2:35 pm-8:49 am

2 stops16h 14m

$767

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

lun. 5/11

4:50 pm-9:18 pm

2 stops30h 28m

Great Falls

mar. 5/19

6:15 am-3:41 pm

1 stop7h 26m

$768

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

mar. 5/12

4:50 pm-9:18 pm

3 stops30h 28m

Great Falls

mar. 5/19

6:15 am-8:49 am

2 stops24h 34m

$777

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

lun. 5/11

4:50 pm-9:18 pm

3 stops30h 28m

Great Falls

mar. 5/19

6:15 am-8:49 am

2 stops24h 34m

$839

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

mar. 7/21

5:15 am-1:41 pm

2 stops10h 26m

Great Falls

ven. 8/7

2:37 pm-9:41 pm

2 stops29h 04m

$843

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first

How to get the cheapest flight ticket from Portland, Maine to Great Falls

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

What is the cheapest airline that flies from Portland to Great Falls?

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

When to book flights from Portland, Maine to Great Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Portland, Maine to Great Falls according to our flight data. Find out which month and days have the cheapest flights.

Estimated round-trip price

Cheap Portland, Maine to Great Falls (PWM to GTF) flight deals and tips

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

Fastest flight time	7h 55m
Direct flights	None

The fastest flight from Portland, Maine to Great Falls takes 7h 55m

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

Search flight deals

How far is Portland to Great Falls by plane?
The straight-line distance from Portland to Great Falls is 1977.7 mi. In terms of flight time, this usually takes a little over 7h 55m.
When did momondo last update prices for flights from Portland Airport to Great Falls Airport?
Prices for flights from Portland Airport to Great Falls Airport refresh daily.
How old do you have to be to fly from Portland Airport to Great Falls Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Portland Airport to Great Falls Airport.
What documentation or ID do you need to fly to Great Falls Airport?
The required travel and health documents for your Great Falls Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Great Falls Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Portland to Great Falls. Millions of users trust and use momondo every year so you are in good hands.

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

All flight searches from Portland to Great Falls on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Portland to Great Falls?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Portland to Great Falls.

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

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