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 many operators does momondo search for flights from Portland Airport to Great Falls Airport?

As of July 2025, there are 2 operators available to choose from for flights from Portland Airport to Great Falls Airport.

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.

$434 Cheap Flights from Portland to Great Falls in 2025

Q: What is the typical price of a round-trip flight between Portland, Maine and Great Falls?

Prices are currently low for flights on this route. Typical prices usually range from $708 to $772. The lowest price recently found on this route was $469.

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Find the cheapest flights from Portland, Maine to Great Falls

Round-trip

One-way

Cheap round-trip flights

10:50 am - 9:28 pmPWM-GTF

12h 38m2 stops

7:00 am - 9:59 pmGTF-PWM

12h 59m2 stops

$469United Airlines

Find Deal

sáb., ago. 30 - mié., sep. 3

12:53 pm - 10:45 pmPWM-GTF

11h 52m2 stops

6:00 am - 11:25 pmGTF-PWM

15h 25m2 stops

$488Delta

Find Deal

sáb., ago. 30 - mié., sep. 3

3:35 pm - 9:28 pmPWM-GTF

7h 53m1 stop

7:00 am - 9:59 pmGTF-PWM

12h 59m2 stops

$519United Airlines

Find Deal

sáb., ago. 30 - mié., sep. 3

12:53 pm - 10:45 pmPWM-GTF

11h 52m2 stops

6:00 am - 10:42 amGTF-PWM

26h 42m1 stop

$548Delta

Find Deal

sáb., ago. 30 - mié., sep. 3

3:35 pm - 9:28 pmPWM-GTF

7h 53m1 stop

7:00 am - 9:59 pmGTF-PWM

12h 59m2 stops

$559United Airlines

Find Deal

sáb., ago. 30 - mié., sep. 3

11:48 am - 8:34 pmPWM-GTF

10h 46m1 stop

6:00 am - 10:42 amGTF-PWM

26h 42m1 stop

$632Delta

Find Deal

sáb., ago. 30 - mié., sep. 3

3:35 pm - 9:28 pmPWM-GTF

7h 53m1 stop

7:00 am - 3:52 pmGTF-PWM

6h 52m1 stop

$643United Airlines

Find Deal

sáb., ago. 30 - mié., sep. 3

3:35 pm - 9:28 pmPWM-GTF

7h 53m1 stop

7:00 am - 3:52 pmGTF-PWM

6h 52m1 stop

$783United Airlines

Find Deal

sáb., ago. 30 - mié., sep. 3

United Airlines flights from Portland, Maine to Great Falls

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

United Airlines

Aug 30

PWM10:50 amPortland

12h 38m

2 stops

GTF9:28 pmGreat Falls

Sep 3

GTF7:00 amGreat Falls

12h 59m

2 stops

PWM9:59 pmPortland

$469

Find similar

United Airlines

Aug 30

PWM3:35 pmPortland

7h 53m

1 stop

GTF9:28 pmGreat Falls

Sep 3

GTF7:00 amGreat Falls

12h 59m

2 stops

PWM9:59 pmPortland

$519

Find similar

United Airlines

Aug 30

PWM3:35 pmPortland

7h 53m

1 stop

GTF9:28 pmGreat Falls

Sep 3

GTF7:00 amGreat Falls

12h 59m

2 stops

PWM9:59 pmPortland

$559

Find similar

Delta flights from Portland, Maine to Great Falls

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

Delta

Aug 30

PWM12:53 pmPortland

11h 52m

2 stops

GTF10:45 pmGreat Falls

Sep 3

GTF6:00 amGreat Falls

15h 25m

2 stops

PWM11:25 pmPortland

$488

Find similar

Delta

Aug 30

PWM12:53 pmPortland

11h 52m

2 stops

GTF10:45 pmGreat Falls

Sep 3

GTF6:00 amGreat Falls

26h 42m

1 stop

PWM10:42 amPortland

$548

Find similar

Delta

Aug 30

PWM11:48 amPortland

10h 46m

1 stop

GTF8:34 pmGreat Falls

Sep 3

GTF6:00 amGreat Falls

26h 42m

1 stop

PWM10:42 amPortland

$632

Find similar

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

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

sáb. 8/30

10:50 am-9:28 pm

2 stops12h 38m

Great Falls

mié. 9/3

7:00 am-9:59 pm

2 stops12h 59m

$469

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

sáb. 8/30

12:53 pm-10:45 pm

2 stops11h 52m

Great Falls

mié. 9/3

6:00 am-11:25 pm

2 stops15h 25m

$488

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

sáb. 8/30

3:35 pm-9:28 pm

1 stop7h 53m

Great Falls

mié. 9/3

7:00 am-9:59 pm

2 stops12h 59m

$519

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

sáb. 8/30

12:53 pm-10:45 pm

2 stops11h 52m

Great Falls

mié. 9/3

6:00 am-10:42 am

1 stop26h 42m

$548

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

sáb. 8/30

3:35 pm-9:28 pm

1 stop7h 53m

Great Falls

mié. 9/3

7:00 am-9:59 pm

2 stops12h 59m

$559

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

sáb. 8/30

11:48 am-8:34 pm

1 stop10h 46m

Great Falls

mié. 9/3

6:00 am-10:42 am

1 stop26h 42m

$632

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

sáb. 8/30

3:35 pm-9:28 pm

1 stop7h 53m

Great Falls

mié. 9/3

7:00 am-3:52 pm

1 stop6h 52m

$643

PortlandGreat Falls

PWM - GTF

PWMGTF

Portland

sáb. 8/30

3:35 pm-9:28 pm

1 stop7h 53m

Great Falls

mié. 9/3

7:00 am-3:52 pm

1 stop6h 52m

$783

Flights are sorted by cheapest round-trip flights first.

Sorted 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 typical price of a round-trip flight between Portland, Maine and Great Falls?

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

According to our data, the cheapest time of day to fly to Great Falls is in the morning. momondo users have found flights departing from Portland, Maine to Great Falls in the morning for as low as $563. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $802 on average. Flights to Great Falls from Portland, Maine in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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	$469
Fastest flight time	7h 53m
Direct flights	None
Airports in Great Falls	1 airport

The best flight deal from Portland, Maine to Great Falls found on momondo in the last 72 hours is $469

The fastest flight from Portland, Maine to Great Falls takes 7h 53m

There are no direct flights from Portland, Maine to Great Falls. Popular non-direct route for this connection is Portland Airport - Great Falls Airport.

There is 1 airport near Great Falls: Great Falls (GTF)

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 53m.
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 many operators does momondo search for flights from Portland Airport to Great Falls Airport?
As of July 2025, there are 2 operators available to choose from for flights from Portland Airport to Great Falls Airport.
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.
What is the most popular airline from Portland, Maine to Great Falls?
Based on momondo bookings for flights between Portland, Maine and Great Falls, the leading airline is United Airlines, making up 54% of the total bookings. Other popular airlines include Delta with 46%.

Best airlines flying from Portland, Maine to Great Falls

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

Airline	Rating	Free Cancellation	Price
United Airlines	PriceFrom $340	Free Cancellation	Rating 7.4 8,900 reviews		Search United Airlines flights
Delta	PriceFrom $347	Free Cancellation	Rating 8.0 7,981 reviews		Search Delta flights

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

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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.