$122 Cheap Delta flights Great Falls (GTF) to Portland (PDX)

Use the “Price (lowest to highest)” filter on Expedia to search for cheap Delta Air Lines round-trip flights from $244 from GTF to PDX. Affordable one-way options from $122 are available too.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the most affordable months to jet off to Portland with Delta Air Lines. You could also find great prices on one-way and round-trip fares in December.

Look for cheap Delta Air Lines flights from Great Falls Intl. Airport (GTF) to Portland Intl. Airport (PDX) one to three months ahead of your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare type and itinerary, the best day of the week to book a domestic flight is usually Sunday and the most expensive is typically Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Enter your dates, hit search and tick the “Nonstop” filter on Expedia to find any direct flights from GTF to PDX with Delta Air Lines or other carriers.

To find the earliest departure from GTF to PDX with Delta Air Lines, sort your results by “Early Morning” and “Morning.” Choosing an early flight generally means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Delta Air Lines flights from Great Falls Intl. Airport (GTF) to Portland touch down at Portland Intl. Airport (PDX). This is the main entry point to this city.

Offering an excellent in-flight experience and a rewarding loyalty program, Delta Air Lines is the leading choice for many travelers heading from GTF to PDX. What’s more, if you’re a Delta SkyMiles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be spent on future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

You can usually cancel or reschedule your flight, although additional charges may apply if you booked more than 24 hours ago. Want to keep your options open? Apply the “No cancel fee” or “Changes included” filter to find flights that won’t charge you extra if you need to alter your plans. To make modifications, visit “Trips,” select your flight and click on “Manage Booking” for more information.