$241 Cheap Flights from Portland (PWM) to Idaho Falls (IDA)

View $241 flight on Tue, Aug 18, 2026Opens in a new window

Popular airlines from Portland Intl. Jetport Airport (PWM) to Idaho Falls Regional Airport (IDA)

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Cheap Flights from Portland to Idaho Falls (PWM-IDA)

Prices were available within the past 7 days and start at $241 for one-way flights and $409 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Mon, Nov 10 - Thu, Nov 27
PWM
Portland
IDA
Idaho Falls
$409 Roundtrip, found 2 days ago
$409
Roundtrip
found 2 days ago
Select United flight, departing Mon, Nov 10 from Portland to Idaho Falls, returning Thu, Nov 27, priced at $409 found 2 days ago
United
Wed, Nov 5 - Tue, Nov 18
PWM
Portland
IDA
Idaho Falls
$414 Roundtrip, found 2 days ago
$414
Roundtrip
found 2 days ago
Select United flight, departing Wed, Nov 5 from Portland to Idaho Falls, returning Tue, Nov 18, priced at $414 found 2 days ago
American Airlines
Sat, Jan 17 - Tue, Jan 27
PWM
Portland
IDA
Idaho Falls
$419 Roundtrip, found 2 days ago
$419
Roundtrip
found 2 days ago
Select American Airlines flight, departing Sat, Jan 17 from Portland to Idaho Falls, returning Tue, Jan 27, priced at $419 found 2 days ago
Delta
Sat, Dec 6 - Mon, Dec 15
PWM
Portland
IDA
Idaho Falls
$425 Roundtrip, found 2 days ago
$425
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Dec 6 from Portland to Idaho Falls, returning Mon, Dec 15, priced at $425 found 2 days ago
Delta
Sat, Apr 25 - Tue, May 12
PWM
Portland
IDA
Idaho Falls
$435 Roundtrip, found 6 days ago
$435
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Apr 25 from Portland to Idaho Falls, returning Tue, May 12, priced at $435 found 6 days ago
United
Sat, Nov 1 - Tue, Nov 18
PWM
Portland
IDA
Idaho Falls
$444 Roundtrip, found 2 days ago
$444
Roundtrip
found 2 days ago
Select United flight, departing Sat, Nov 1 from Portland to Idaho Falls, returning Tue, Nov 18, priced at $444 found 2 days ago
Alaska Airlines
Wed, Dec 10 - Sat, Dec 13
PWM
Portland
IDA
Idaho Falls
$444 Roundtrip, found 2 days ago
$444
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Dec 10 from Portland to Idaho Falls, returning Sat, Dec 13, priced at $444 found 2 days ago
United
Tue, Jan 27 - Fri, Feb 13
PWM
Portland
IDA
Idaho Falls
$449 Roundtrip, found 2 days ago
$449
Roundtrip
found 2 days ago
Select United flight, departing Tue, Jan 27 from Portland to Idaho Falls, returning Fri, Feb 13, priced at $449 found 2 days ago
Delta
Sat, Dec 6 - Wed, Dec 24
PWM
Portland
IDA
Idaho Falls
$454 Roundtrip, found 2 days ago
$454
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Dec 6 from Portland to Idaho Falls, returning Wed, Dec 24, priced at $454 found 2 days ago
Delta
Sat, Apr 25 - Wed, May 6
PWM
Portland
IDA
Idaho Falls
$457 Roundtrip, found 6 days ago
$457
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Apr 25 from Portland to Idaho Falls, returning Wed, May 6, priced at $457 found 6 days ago

Frequently asked questions

How much does a flight from Portland Intl. Jetport Airport (PWM) to Idaho Falls Regional Airport (IDA) cost?
Grab a cheap one-way flight from $241 or cheap return flight from $409 from Portland Intl. Jetport Airport (PWM) to Idaho Falls Regional Airport (IDA) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Portland Intl. Jetport Airport (PWM) to Idaho Falls Regional Airport (IDA)?
The cheapest month to fly from PWM to IDA is November, when there's less demand. Off-peak season is often when you'll find lower airfares between these airports.
What is the cheapest airline that flies from Portland Intl. Jetport Airport (PWM) to Idaho Falls Regional Airport (IDA)?
To find the cheapest airline flying from PWM to IDA, use Expedia's filter tool. Tailor your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Portland Intl. Jetport Airport (PWM) to Idaho Falls Regional Airport (IDA)?
There are no daily direct flights from Portland Intl. Jetport Airport (PWM) to Idaho Falls Regional Airport (IDA). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from PWM to IDA?
Generally you'll find the largest variety of flight choices on a Friday. Tuesdays tend to be the quietest.* However, this can change depending on the season, carrier and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Portland Intl. Jetport Airport (PWM) to Idaho Falls Regional Airport (IDA)?
To touch down at Idaho Falls Regional Airport (IDA) without delays, opt for a flight that leaves from Portland Intl. Jetport Airport (PWM) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Portland Intl. Jetport Airport (PWM) to Idaho Falls Regional Airport (IDA) last-minute?
Waiting until right before your break to book a ticket from PWM to IDA generally means paying more. While you may come across some last-minute deals, there's no guarantee. Be flexible with your itinerary for the best chance of snagging a bargain.
Is it cheaper to book a PWM to IDA flight and hotel package?
Compared with arranging hotels and flights separately, booking a PWM to IDA flight and hotel package with Expedia could result in significant savings. Better still, having it all in one place will take the hassle out of planning your trip. Simply pick your flights and choose from our extensive range of hotels, then personalize your trip with extras like tours, car rentals and activities.
Can I cancel or change the date of my flight from Portland Intl. Jetport Airport (PWM) to Idaho Falls Regional Airport (IDA)?
If you booked your PWM to IDA flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for more details.

Travel information

Origin airport
Portland Intl. Jetport
Destination airport
Idaho Falls Regional
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$408
Distance
2067 mi

Book with confidence

Portland to Idaho Falls Flights

The cheapest times to fly from Portland to Idaho Falls

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Portland to Idaho Falls are during the month of November. You can find some of the cheapest flights from Portland to Idaho Falls with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Portland to Idaho Falls

Sunday is one of the best days to book for cheap flights from Portland to Idaho Falls: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Portland to Idaho Falls

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Portland to Idaho Falls in 2025. You can also book with separate airlines for your outbound and return journeys, from $241 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Portland to Idaho Falls flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Portland to Idaho Falls airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Portland to Idaho Falls Flights

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*Available to One Key members.