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.

$373 Cheap Flights from Portland, Maine to Great Falls in 2026/27

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.

10:50 am - 9:38 pmPWM Portland-GTF Great Falls

12h 48m2 stops Newark Denver Intl

6:30 am - 4:02 pmGTF Great Falls-PWM Portland

7h 32m1 stop Denver Intl

$494United Airlines

Sat, Oct 31 - Wed, Nov 4

10:50 am - 9:38 pmPWM Portland-GTF Great Falls

12h 48m2 stops Newark Denver Intl

6:30 am - 9:51 pmGTF Great Falls-PWM Portland

13h 21m2 stops Denver Intl Chicago O'Hare Intl

$499United Airlines

Sat, Oct 31 - Wed, Nov 4

5:30 am - 9:38 pmPWM Portland-GTF Great Falls

18h 08m3 stops Washington, D.C. Dulles Intl San Francisco Denver Intl

6:30 am - 9:51 pmGTF Great Falls-PWM Portland

13h 21m2 stops Denver Intl Chicago O'Hare Intl

$504United Airlines

Sat, Oct 31 - Wed, Nov 4

3:23 pm - 9:38 pmPWM Portland-GTF Great Falls

8h 15m1 stop Denver Intl

6:30 am - 4:02 pmGTF Great Falls-PWM Portland

7h 32m1 stop Denver Intl

$523United Airlines

Sat, Oct 31 - Wed, Nov 4

5:30 am - 9:38 pmPWM Portland-GTF Great Falls

18h 08m3 stops Washington, D.C. Dulles Intl San Francisco Denver Intl

6:30 am - 9:51 pmGTF Great Falls-PWM Portland

13h 21m2 stops Denver Intl Chicago O'Hare Intl

$539United Airlines

Sat, Oct 31 - Wed, Nov 4

5:30 am - 9:38 pmPWM Portland-GTF Great Falls

18h 08m3 stops Washington, D.C. Dulles Intl San Francisco Denver Intl

2:45 pm - 11:21 pmGTF Great Falls-PWM Portland

30h 36m3 stops Denver Intl Memphis Newark

$664United Airlines

Sat, Oct 31 - Wed, Nov 4

5:30 am - 9:38 pmPWM Portland-GTF Great Falls

18h 08m3 stops Washington, D.C. Dulles Intl San Francisco Denver Intl

2:45 pm - 11:21 pmGTF Great Falls-PWM Portland

30h 36m3 stops Denver Intl Memphis Newark

$693United Airlines

Sat, Oct 31 - Wed, Nov 4

3:23 pm - 9:38 pmPWM Portland-GTF Great Falls

8h 15m1 stop Denver Intl

6:30 am - 8:42 pmGTF Great Falls-PWM Portland

12h 12m2 stops Denver Intl Newark

$713United Airlines

Mon, Nov 23 - Wed, Dec 2

5:30 am - 1:49 pmPWM Portland-GTF Great Falls

10h 19m2 stops Washington, D.C. Dulles Intl Denver Intl

6:30 am - 8:42 pmGTF Great Falls-PWM Portland

12h 12m2 stops Denver Intl Newark

$718United Airlines

Mon, Nov 23 - Wed, Dec 2

5:30 am - 9:38 pmPWM Portland-GTF Great Falls

18h 08m3 stops Washington, D.C. Dulles Intl San Francisco Denver Intl

2:45 pm - 11:21 pmGTF Great Falls-PWM Portland

30h 36m3 stops Denver Intl Houston George Bush Intcntl Newark

$733United Airlines

Sat, Oct 31 - Wed, Nov 4

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United Airlines flights from Portland, Maine to Great Falls

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

United Airlines

Oct 31

PWM10:50 amPortland

12h 48m

2 stops

GTF9:38 pmGreat Falls

Nov 4

GTF6:30 amGreat Falls

7h 32m

1 stop

PWM4:02 pmPortland

$494

United Airlines

Oct 31

PWM10:50 amPortland

12h 48m

2 stops

GTF9:38 pmGreat Falls

Nov 4

GTF6:30 amGreat Falls

13h 21m

2 stops

PWM9:51 pmPortland

$499

United Airlines

Oct 31

PWM5:30 amPortland

18h 08m

3 stops

GTF9:38 pmGreat Falls

Nov 4

GTF6:30 amGreat Falls

13h 21m

2 stops

PWM9:51 pmPortland

$504

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

PortlandGreat Falls

PWM Portland - GTF Great Falls

PWMGTF

Portland

Sat 10/31

10:50 am-9:38 pm

2 stops12h 48m

Great Falls

Wed 11/4

6:30 am-4:02 pm

1 stop7h 32m

$494

PortlandGreat Falls

PWM Portland - GTF Great Falls

PWMGTF

Portland

Sat 10/31

10:50 am-9:38 pm

2 stops12h 48m

Great Falls

Wed 11/4

6:30 am-9:51 pm

2 stops13h 21m

$499

PortlandGreat Falls

PWM Portland - GTF Great Falls

PWMGTF

Portland

Sat 10/31

5:30 am-9:38 pm

3 stops18h 08m

Great Falls

Wed 11/4

6:30 am-9:51 pm

2 stops13h 21m

$504

Quickest round-trip

PortlandGreat Falls

PWM Portland - GTF Great Falls

PWMGTF

Portland

Sat 10/31

3:23 pm-9:38 pm

1 stop8h 15m

Great Falls

Wed 11/4

6:30 am-4:02 pm

1 stop7h 32m

$523

PortlandGreat Falls

PWM Portland - GTF Great Falls

PWMGTF

Portland

Sat 10/31

5:30 am-9:38 pm

3 stops18h 08m

Great Falls

Wed 11/4

6:30 am-9:51 pm

2 stops13h 21m

$539

PortlandGreat Falls

PWM Portland - GTF Great Falls

PWMGTF

Portland

Sat 10/31

5:30 am-9:38 pm

3 stops18h 08m

Great Falls

Wed 11/4

2:45 pm-11:21 pm

3 stops30h 36m

$664

PortlandGreat Falls

PWM Portland - GTF Great Falls

PWMGTF

Portland

Sat 10/31

5:30 am-9:38 pm

3 stops18h 08m

Great Falls

Wed 11/4

2:45 pm-11:21 pm

3 stops30h 36m

$693

PortlandGreat Falls

PWM Portland - GTF Great Falls

PWMGTF

Portland

Mon 11/23

3:23 pm-9:38 pm

1 stop8h 15m

Great Falls

Wed 12/2

6:30 am-8:42 pm

2 stops12h 12m

$713

PortlandGreat Falls

PWM Portland - GTF Great Falls

PWMGTF

Portland

Mon 11/23

5:30 am-1:49 pm

2 stops10h 19m

Great Falls

Wed 12/2

6:30 am-8:42 pm

2 stops12h 12m

$718

PortlandGreat Falls

PWM Portland - GTF Great Falls

PWMGTF

Portland

Sat 10/31

5:30 am-9:38 pm

3 stops18h 08m

Great Falls

Wed 11/4

2:45 pm-11:21 pm

3 stops30h 36m

$733

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 12 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 is the most popular carrier 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

Best Price Found	$373
Fastest flight time	8h 15m
Direct flights	None

The best one-way flight to Great Falls from Portland, Maine in the past 72 hours is $373. The best round-trip flight deal from Portland, Maine to Great Falls found on momondo in the last 72 hours is $494.

The fastest flight from Portland, Maine to Great Falls takes 8h 15m

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

Frequently asked questions about flying from Portland, Maine to Great Falls

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 8h 15m.
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.

Shelby

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.