Cheap flights from Portland, Maine to Great Falls from $399
This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Portland, Maine to Great Falls departing on 6/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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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
Delta flights from Portland, Maine to Great Falls
Our best Delta deals on Portland, Maine to Great Falls flight tickets
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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 day to depart on your flight to Great Falls?
The cheapest day to depart on your flight to Great Falls is on a Thursday when prices can be found for as low as $563. This is often the case because there is less demand to fly during this day of the week. On the other hand, Thursday is the most expensive day to depart from Portland, Maine because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $563.
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
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
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 19m.
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 April 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 56% of the total bookings. Other popular airlines include Delta with 44%.
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 | ||
|---|---|---|---|---|---|
| PriceFrom $347 | Free Cancellation | Rating 8.0 7,920 reviews | |||
| PriceFrom $416 | Free Cancellation | Rating 7.4 8,685 reviews |
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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.