$138 Cheap Flights from Idaho Falls (IDA) to Portland (PDX)

View $138 flight on Wed, Feb 4, 2026Opens in a new window

Popular airlines from Idaho Falls Regional Airport (IDA) to Portland International Airport (PDX)

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

Prices were available within the past 7 days and start at $138 for one-way flights and $257 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Sat, Oct 3 - Tue, Oct 6
IDA
Idaho Falls
PDX
Portland
$257 Roundtrip, found 1 hour ago
$257
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Oct 3 from Idaho Falls to Portland, returning Tue, Oct 6, priced at $257 found 1 hour ago
Hawaiian Airlines
Sat, Jan 10 - Sat, Jan 24
IDA
Idaho Falls
PDX
Portland
$264 Roundtrip, found 8 hours ago
$264
Roundtrip
found 8 hours ago
Select Hawaiian Airlines flight, departing Sat, Jan 10 from Idaho Falls to Portland, returning Sat, Jan 24, priced at $264 found 8 hours ago
Delta
Tue, Feb 3 - Wed, Feb 18
IDA
Idaho Falls
PDX
Portland
$266 Roundtrip, found 8 hours ago
$266
Roundtrip
found 8 hours ago
Select Delta flight, departing Tue, Feb 3 from Idaho Falls to Portland, returning Wed, Feb 18, priced at $266 found 8 hours ago
Hawaiian Airlines
Sun, Jan 11 - Sat, Jan 24
IDA
Idaho Falls
PDX
Portland
$270 Roundtrip, found 8 hours ago
$270
Roundtrip
found 8 hours ago
Select Hawaiian Airlines flight, departing Sun, Jan 11 from Idaho Falls to Portland, returning Sat, Jan 24, priced at $270 found 8 hours ago
Delta
Wed, Feb 11 - Sun, Feb 22
IDA
Idaho Falls
PDX
Portland
$271 Roundtrip, found 8 hours ago
$271
Roundtrip
found 8 hours ago
Select Delta flight, departing Wed, Feb 11 from Idaho Falls to Portland, returning Sun, Feb 22, priced at $271 found 8 hours ago
Hawaiian Airlines
Sun, Jan 25 - Sat, Feb 7
IDA
Idaho Falls
PDX
Portland
$274 Roundtrip, found 8 hours ago
$274
Roundtrip
found 8 hours ago
Select Hawaiian Airlines flight, departing Sun, Jan 25 from Idaho Falls to Portland, returning Sat, Feb 7, priced at $274 found 8 hours ago
Delta
Fri, Jan 30 - Wed, Feb 18
IDA
Idaho Falls
PDX
Portland
$276 Roundtrip, found 8 hours ago
$276
Roundtrip
found 8 hours ago
Select Delta flight, departing Fri, Jan 30 from Idaho Falls to Portland, returning Wed, Feb 18, priced at $276 found 8 hours ago
Alaska Airlines
Sat, Oct 3 - Tue, Oct 6
IDA
Idaho Falls
PDX
Portland
$277 Roundtrip, found 1 hour ago
$277
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Oct 3 from Idaho Falls to Portland, returning Tue, Oct 6, priced at $277 found 1 hour ago
United
Thu, Feb 12 - Wed, Feb 18
IDA
Idaho Falls
PDX
Portland
$455 Roundtrip, found 2 days ago
$455
Roundtrip
found 2 days ago
Select United flight, departing Thu, Feb 12 from Idaho Falls to Portland, returning Wed, Feb 18, priced at $455 found 2 days ago
American Airlines
Sat, Feb 7 - Tue, Feb 10
IDA
Idaho Falls
PDX
Portland
$477 Roundtrip, found 3 days ago
$477
Roundtrip
found 3 days ago
Select American Airlines flight, departing Sat, Feb 7 from Idaho Falls to Portland, returning Tue, Feb 10, priced at $477 found 3 days ago

Find the cheapest month to fly from Idaho Falls (IDA) to Portland (PDX)

May is typically the cheapest month to fly

From $197 - $446 per traveler.

Alternative airports near Portland

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

Select flight to Portland Intl. PDX. Cheapest and Closest option available. Average driving time to city center is 17 minutes. Flights from $317
PDX
Portland Intl.
CheapestClosest
Average driving time to city center17 min
Flights from $317
0
Flights from Idaho Falls (IDA) to Portland (PDX)
Origin airport
Idaho Falls Regional
Destination airport
Portland Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Hawaiian Airlines, United
Roundtrip price
$257
Distance
536 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 October. 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 2026. You can also book with separate airlines for your outbound and return journeys, from $138 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. Airport (PDX) cost?
Grab a cheap one-way flight from $138 or cheap return flight from $257 from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX)?
Planning your getaway for October can help you save, as it's the cheapest month for flights between IDA and PDX. You'll typically find the lowest prices during the off-season.
What is the cheapest airline that flies from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX)?
Expedia's filter tool lets you easily compare airlines, flight times and baggage options all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest IDA to PDX flight.
How many flights per day from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX)?
On average, you can take your pick of 2 nonstop flights departing from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX) each week. If you don't find one that works for your schedule, consider a flight that has a layover. Filter your search results on Expedia to include one or two stops and opt for the next best option.
What are the most popular departure times for flights from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX)?
Flights between IDA and PDX are their busiest at 2 PM. For a quieter experience and potentially cheaper fares, choose a time outside the usual busy windows.
What day of the week has the most flights from IDA to PDX?
If you fly on a Friday, you'll get the widest range of options for flights from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX).
What is the earliest flight from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX)?
The earliest flight out of Idaho Falls Regional Airport (IDA) is at around 2:46PM UTC-7. Board this plane and you'll arrive at Portland Intl. Airport (PDX) at approximately 3:40PM UTC-8. The total travel time is 1h 54m.
How long does it take to fly from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX)?
It usually takes 1 hour and 54 minutes to travel the 540 mi from IDA to PDX.
What is the best time to fly from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX)?
Select a flight from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX) that leaves before 3 PM to reduce the risk of delays and cancellations. Departures later than this are on average 22% more likely to be canceled.**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.
What airports do you fly into for Portland from Idaho Falls Regional Airport (IDA)?
Portland Intl. Airport (PDX) is the only airport in Portland with direct flights from Idaho Falls Regional Airport (IDA). Consider the options and discover affordable fares on Expedia.
Is it cheaper to buy a plane ticket from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX) last-minute?
Waiting until just before your trip to book a flight from IDA to PDX often results in higher prices. While it's possible to find some last-minute deals, there's no guarantee. Keep your travel schedule open to boost your chances of snagging a bargain.
Is it cheaper to book an IDA to PDX flight and hotel package?
Opting for an IDA to PDX flight and hotel package is generally cheaper than booking separately. With Expedia, you can enjoy the convenience of organizing your trip all in one place. Choose from our wide range of stays and then add activities, car rentals and flights to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from Idaho Falls Regional Airport (IDA) to Portland Intl. Airport (PDX)?
If you booked your IDA to PDX flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the type of fare you have, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more details.

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*Available to One Key members.