$179 Cheap Delta flights Portland (PDX) to Idaho Falls (IDA)

Set the “Price (lowest to highest)” filter on Expedia to find cheap Delta Air Lines round-trip flights from $343 from PDX to IDA. Affordable one-way tickets from $179 are available as well.**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 least expensive months to jet off to Idaho Falls with Delta Air Lines. You could also find excellent prices on one-way and return fares in February.

To find cheap Delta Air Lines fares from Portland Intl. Airport (PDX) to Idaho Falls Regional Airport (IDA), start searching one to three months before your intended departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect what you pay. Sunday is generally the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip on a Sunday.**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.

Click on the “Nonstop” filter when searching for direct Delta Air Lines flights from PDX to IDA. It’s also a good way to compare other airlines offering the same nonstop route.

Find Delta Air Lines’s earliest flights from PDX to IDA by checking our “Early Morning” and “Morning” filters. Not only will you get to where you’re going sooner, early departures also experience 20% fewer 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.

Idaho Falls Regional Airport (IDA) is the main Idaho Falls hub for Delta Air Lines flights from Portland Intl. Airport (PDX).

Offering a rewarding loyalty program and an excellent in-flight experience, Delta Air Lines is a popular option for many passengers heading from PDX to IDA. Plus, 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 put toward future getaways.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s generally possible to reschedule or cancel your flight, although there may be additional fees if you made your booking more than 24 hours ago. Need flexible options? Make use of our “No cancel fee” and “Changes included” filters to find flights that won’t charge extra if you have to revise your plans. To make changes, go to “Trips,” select your flight and click on “Manage Booking” for more details.