$231 Cheap Flights from Idaho Falls (IDA) to Portland (PWM)

View $231 flight on Thu, Sep 18, 2025Opens in a new window

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

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

Prices were available within the past 7 days and start at $231 for one-way flights and $355 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Tue, Sep 30 - Sat, Oct 4
IDA
Idaho Falls
PWM
Portland
$355 Roundtrip, found 4 days ago
$355
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Sep 30 from Idaho Falls to Portland, returning Sat, Oct 4, priced at $355 found 4 days ago
American Airlines
Tue, Sep 30 - Sat, Oct 4
IDA
Idaho Falls
PWM
Portland
$360 Roundtrip, found 4 days ago
$360
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Sep 30 from Idaho Falls to Portland, returning Sat, Oct 4, priced at $360 found 4 days ago
Delta
Sat, Sep 27 - Thu, Oct 2
IDA
Idaho Falls
PWM
Portland
$410 Roundtrip, found 4 days ago
$410
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Sep 27 from Idaho Falls to Portland, returning Thu, Oct 2, priced at $410 found 4 days ago
American Airlines
Wed, Oct 1 - Sat, Oct 4
IDA
Idaho Falls
PWM
Portland
$414 Roundtrip, found 4 days ago
$414
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Oct 1 from Idaho Falls to Portland, returning Sat, Oct 4, priced at $414 found 4 days ago
Delta
Tue, Aug 12 - Tue, Aug 19
IDA
Idaho Falls
PWM
Portland
$440 Roundtrip, found 5 days ago
$440
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Aug 12 from Idaho Falls to Portland, returning Tue, Aug 19, priced at $440 found 5 days ago
American Airlines
Fri, Aug 8 - Fri, Aug 15
IDA
Idaho Falls
PWM
Portland
$454 Roundtrip, found 5 days ago
$454
Roundtrip
found 5 days ago
Select American Airlines flight, departing Fri, Aug 8 from Idaho Falls to Portland, returning Fri, Aug 15, priced at $454 found 5 days ago
Delta
Tue, Aug 12 - Thu, Aug 14
IDA
Idaho Falls
PWM
Portland
$455 Roundtrip, found 5 days ago
$455
Roundtrip
found 5 days ago
Select Delta flight, departing Tue, Aug 12 from Idaho Falls to Portland, returning Thu, Aug 14, priced at $455 found 5 days ago
American Airlines
Tue, Sep 30 - Sat, Oct 4
IDA
Idaho Falls
PWM
Portland
$460 Roundtrip, found 4 days ago
$460
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Sep 30 from Idaho Falls to Portland, returning Sat, Oct 4, priced at $460 found 4 days ago
American Airlines
Tue, Sep 30 - Sat, Oct 4
IDA
Idaho Falls
PWM
Portland
$464 Roundtrip, found 4 days ago
$464
Roundtrip
found 4 days ago
Select American Airlines flight, departing Tue, Sep 30 from Idaho Falls to Portland, returning Sat, Oct 4, priced at $464 found 4 days ago
United
Tue, Sep 30 - Sat, Oct 4
IDA
Idaho Falls
PWM
Portland
$561 Roundtrip, found 4 days ago
$561
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep 30 from Idaho Falls to Portland, returning Sat, Oct 4, priced at $561 found 4 days ago

Alternative airports near Portland

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Portland Intl. Jetport PWM. Cheapest and Closest option available. Average driving time to city center is 8 minutes. Flights from $575
PWM
Portland Intl. Jetport
CheapestClosest
Average driving time to city center8 min
Flights from $575
Flights from Idaho Falls (IDA) to Portland (PWM)
Origin airport
Idaho Falls Regional
Destination airport
Portland Intl. Jetport
Airlines serving
American Airlines, Delta, United
Roundtrip price
$354
Distance
2067 mi

Idaho Falls to Portland Flights

The cheapest times to fly from Idaho Falls to Portland

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 Idaho Falls to Portland are during the month of September. You can find some of the cheapest flights from Idaho Falls to Portland with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Idaho Falls to Portland: 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 Idaho Falls to Portland

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 Idaho Falls to Portland in 2025. You can also book with separate airlines for your outbound and return journeys, from $231 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 Idaho Falls to Portland 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 Idaho Falls to Portland 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.

 

Frequently asked questions

How much does a flight from Idaho Falls Regional Airport (IDA) to Portland Intl. Jetport Airport (PWM) cost?
Discover the latest flight deals from IDA to PWM by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from IDA to PWM?
The cheapest flights from IDA to PWM are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from IDA to PWM?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from IDA to PWM. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Idaho Falls Regional Airport (IDA) to Portland Intl. Jetport Airport (PWM)?
There aren't any daily direct flights available from Idaho Falls Regional Airport (IDA) to Portland Intl. Jetport Airport (PWM). But you can choose flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be cruising above the clouds before you know it.
What day of the week has the most flights from IDA to PWM?
Typically you'll have the most choice when it comes to flights on a Friday. Tuesdays tend to be the quietest.* But this can change based on the airline, time of year 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 Idaho Falls Regional Airport (IDA) to Portland Intl. Jetport Airport (PWM)?
To reach Portland Intl. Jetport Airport (PWM) on time, opt for a flight that takes off from Idaho Falls Regional Airport (IDA) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 Idaho Falls Regional Airport (IDA) to Portland Intl. Jetport Airport (PWM) last-minute?
Booking your ticket from IDA to PWM shortly before your getaway is usually more expensive. But if there's some wiggle room with your departure times and dates, you could bag a cheap last-minute fare.
Is it cheaper to book an IDA to PWM flight and hotel package?
Compared with arranging flights and hotels separately, booking an IDA to PWM flight and hotel package with Expedia could result in significant savings. Better still, managing everything in one place will take the stress out of travel planning. Just secure your flights and select from our wide range of hotels, then personalize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to Portland Intl. Jetport Airport (PWM)?
Typically, you're able to cancel or reschedule your IDA to PWM flight. However, additional charges may apply, especially if your booking was made more than 24 hours ago. Double-check your itinerary for the airline's guidelines and fees on flight changes, or if you want more information, head to our Customer Service portal.

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*Available to One Key members.