Cheap flights from Great Falls to Portland from $139

Travelers frequently search for route combinations, such as Great Falls and Las Vegas, Nairobi, Oakland, Juba, Warsaw, Flint, Honolulu, Quito, San Antonio, Dubai, Bozeman, Reno, Fresno, Phoenix, Harare, Orlando, Madison, Minneapolis, Montreal, Ontario.

Travelers frequently search for route combinations, such as Portland and Los Angeles, Guadalajara, Mexico City, Las Vegas, San Francisco, New York, Phoenix, Dallas, Denver, San Diego, London, Chicago, Washington, D.C., Ontario, Tokyo, Salt Lake City, Paris, Boston, Tel Aviv, San Jose.

The main airport in Great Falls is Great Falls International. It is also served by Bozeman Yellowstone International, Missoula International, Great Falls International, Helena Regional, Havre City–County, Bert Mooney.

The main airport in Portland is Portland International. It is also served by Seattle–Tacoma International, Portland International, Eugene, Roberts Field, Kenmore Air Harbor Seaplane Base, Boeing Field.

Currently, you can fly between Great Falls and Portland with Alaska Airlines, Hawaiian Airlines, United Airlines, Allegiant Air, Frontier Airlines.

If you don’t have specific dates for your trip between Great Falls and Portland, you can enter a date range into the departure and return fields. Most carriers on the Kiwi.com website allow you to search and book up to six months from the day of your search. Order the search results by the best, cheapest, or fastest route, or find the cheapest outbound and return combination in the pricing table.

Traveling between Great Falls and Portland, you can choose between direct (nonstop) flights or flights with one or more stops. You can select the number of stops on your journey, including an overnight stopover, and the duration of the stopover. What’s more, you can also select where you want to have your stopover. Want to say "Hi" to a friend in another city en route to your destination? Or fancy a quick round of shopping? Go Multi-City or Nomad and add places to your search that you wish to visit.

There are a number of airports in and around Great Falls. The main one is Great Falls International and other nearby airports include Bozeman Yellowstone International, Missoula International, Great Falls International, Helena Regional, Havre City–County, Bert Mooney

There are a number of airports in and around Portland. The main one is Portland International and other nearby airports include Seattle–Tacoma International, Portland International, Eugene, Roberts Field, Kenmore Air Harbor Seaplane Base, Boeing Field.