A nighttime cityscape with illuminated buildings, a bridge, and reflections on the water.

$139 Cheap Flights from Idaho Falls (IDA) to Portland (PDX)

View $139 flight on Sat, Jan 9, 2027Opens in a new window

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

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our OneKeyCash
    Learn about One Key

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

Prices were available within the past 7 days and start at $139 for one-way flights and $237 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Alaska Airlines
Wed, Oct 7 - Wed, Oct 14
IDA
Idaho Falls
PDX
Portland
$237 Roundtrip, just found
$237
Roundtrip
just found
Select Alaska Airlines flight, departing Wed, Oct 7 from Idaho Falls to Portland, returning Wed, Oct 14, priced at $237 just found
Alaska Airlines
Sat, Nov 7 - Tue, Nov 10
IDA
Idaho Falls
PDX
Portland
$247 Roundtrip, found 1 day ago
$247
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Sat, Nov 7 from Idaho Falls to Portland, returning Tue, Nov 10, priced at $247 found 1 day ago
Alaska Airlines
Sat, Oct 10 - Sun, Oct 11
IDA
Idaho Falls
PDX
Portland
$247 Roundtrip, found 3 hours ago
$247
Roundtrip
found 3 hours ago
Select Alaska Airlines flight, departing Sat, Oct 10 from Idaho Falls to Portland, returning Sun, Oct 11, priced at $247 found 3 hours ago
Alaska Airlines
Wed, Feb 10 - Tue, Feb 23
IDA
Idaho Falls
PDX
Portland
$249 Roundtrip, found 2 days ago
$249
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Wed, Feb 10 from Idaho Falls to Portland, returning Tue, Feb 23, priced at $249 found 2 days ago
Alaska Airlines
Sat, Jan 9 - Sat, Jan 16
IDA
Idaho Falls
PDX
Portland
$257 Roundtrip, found 1 hour ago
$257
Roundtrip
found 1 hour ago
Select Alaska Airlines flight, departing Sat, Jan 9 from Idaho Falls to Portland, returning Sat, Jan 16, priced at $257 found 1 hour ago
Alaska Airlines
Thu, Feb 11 - Thu, Feb 18
IDA
Idaho Falls
PDX
Portland
$265 Roundtrip, found 4 days ago
$265
Roundtrip
found 4 days ago
Select Alaska Airlines flight, departing Thu, Feb 11 from Idaho Falls to Portland, returning Thu, Feb 18, priced at $265 found 4 days ago
Delta
Wed, Nov 11 - Wed, Nov 18
IDA
Idaho Falls
PDX
Portland
$267 Roundtrip, found 2 hours ago
$267
Roundtrip
found 2 hours ago
Select Delta flight, departing Wed, Nov 11 from Idaho Falls to Portland, returning Wed, Nov 18, priced at $267 found 2 hours ago
Alaska Airlines
Wed, Jan 20 - Mon, Jan 25
IDA
Idaho Falls
PDX
Portland
$267 Roundtrip, found 20 hours ago
$267
Roundtrip
found 20 hours ago
Select Alaska Airlines flight, departing Wed, Jan 20 from Idaho Falls to Portland, returning Mon, Jan 25, priced at $267 found 20 hours ago
American Airlines
Wed, Feb 10 - Tue, Feb 23
IDA
Idaho Falls
PDX
Portland
$661 Roundtrip, found 2 days ago
$661
Roundtrip
found 2 days ago
Select American Airlines flight, departing Wed, Feb 10 from Idaho Falls to Portland, returning Tue, Feb 23, priced at $661 found 2 days ago
United
Wed, Oct 14 - Tue, Oct 20
IDA
Idaho Falls
PDX
Portland
$675 Roundtrip, found 3 days ago
$675
Roundtrip
found 3 days ago
Select United flight, departing Wed, Oct 14 from Idaho Falls to Portland, returning Tue, Oct 20, priced at $675 found 3 days ago

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

February is typically the cheapest month to fly

From $156 - $421 per traveler.

What you need to know for your flight from Idaho Falls Regional to Portland Intl.

Idaho Falls (IDA) to Portland (PDX) at a glance

Travel from Idaho Falls (IDA) to Portland (PDX) and explore the city's renowned attractions with a selection of airlines offering this convenient domestic short-haul route. Discover options for Idaho Falls to Portland flights, comparing choices from full-service carriers that align with your budget and schedule. Whether you're seeking the cheapest flights to Portland International Airport or looking for various itineraries, you'll find all the essential details for your journey from Idaho Falls Regional Airport to Portland.

  • Fastest flight duration: around 3 hours in-flight, plus roughly 1h 15m layover with one stop
  • Route distance: roughly 500 miles (800 km)
  • Flights per week: around 9 departures on average
  • Typical fares (one-way): economy tickets often range from $95–$480, depending on seasonality and how far ahead you book

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

According to recent traveler bookings, the most popular airlines flying from Idaho Falls to Portland often provide one-stop services with convenient layovers. Common connections are through Seattle-Tacoma International Airport (SEA) with approximately a 1-hour and 15-minute layover, and Salt Lake City International Airport (SLC) with a 1-hour layover. This allows you to tailor your travel experience by balancing price, total travel time, and cabin class to discover the best itinerary for your journey.

  • Alaska Airlines: This full-service airline provides one-stop journeys, with one-way ticket prices generally between $95 and $480. Alaska Airlines represents about 53% of flights on this route, featuring an in-flight duration of 3 hours and a total travel time of approximately 4 hours and 15 minutes, including layover.
  • Delta: Another full-service option, Delta offers one-stop service with one-way fares typically ranging from $115 to $530. It accounts for around 44% of departures on this route, with a flight time of 3 hours and a complete travel time of nearly 4 hours and 15 minutes, including the layover.

Travelers flying from Idaho Falls to Portland can opt for an upgrade. Both Alaska Airlines and Delta provide first-class service for this route, enhancing the overall travel experience.

Best time to fly from Idaho Falls (IDA) to Portland (PDX)

The most popular months for travelers flying from Idaho Falls to Portland are February, March, and April, when peak temperatures in Portland reach up to 49.5°F in April. If you prefer quieter travel, consider May, the least busy and relatively cheaper time to visit with fewer crowds and temperatures around 56.7°F. For better deals, November usually offers the lowest average one-way fare around $214. Flight availability peaks in April and December, with approximately 10 flights per week, making it easier to find convenient departure times.

  • Cheapest time to fly: November usually offers good deals with average one-way fare around $214, roughly 23% cheaper than the yearly average.
  • Another budget-friendly time to fly: February typically offers an average one-way fare of around $223.
  • Most flight options: April and December have the highest number of flights from Idaho Falls to Portland, with approximately 10 flights per week, giving you more flexibility in scheduling your trip.
calendar iconMonthtemperature iconTemperaturecrowd level iconDemandflights iconWeekly Flightsprice iconAverage one-way Fare
January40.8°F (4.9°C)Average8$290
February41.4°F (5.2°C)High9$223
March45.0°F (7.2°C)High8$279
April49.5°F (9.7°C)High10$264
May56.7°F (13.7°C)Low7$273
June62.4°F (16.9°C)Average9$288
July69.1°F (20.6°C)Low9$351
August70.3°F (21.3°C)Average9$324
September64.0°F (17.8°C)Average8$311
October54.7°F (12.6°C)Low7$286
November45.5°F (7.5°C)Average9$214
December39.9°F (4.4°C)Average10$252

*Average one-way fare is based on Expedia flight booking data from January 2025 to April 2026 for the specified route and travel class and may change depending on availability, dates, and demand.

Alternative routes from Idaho Falls (IDA) to Portland (PDX)

  • Idaho Falls to Troutdale (IDA-TTD): Troutdale Airport (TTD), located approximately 10 miles from Portland International Airport (PDX), serves as a convenient option for travelers.
  • Idaho Falls to Salem (IDA-SLE): McNary Field Airport (SLE) is situated about 51 miles from Portland International Airport (PDX), providing another accessible route for passengers.

How to find the best prices for flights from Idaho Falls (IDA) to Portland (PDX)

Getting some of the best deals on flights from Idaho Falls to Portland is all about timing and flexibility. Here are some key tips to help you save:

  1. Best times to book and fly: cheaper fares are usually available when booking at least two months in advance, although most travelers tend to book between two to eight weeks ahead. Morning departures, between 5 a.m. and 12 p.m., not only offer lower prices but are also the most sought-after flight times. Additionally, flying on Tuesday typically results in cheaper fares, while Monday remains the most popular travel day.
  2. Set up price alerts: stay updated on price changes by using Expedia's Price Tracker. Receive alerts when fares drop for your selected route.
  3. Bundle and save: bundle your flight and hotel to save on Expedia, or unlock a hotel deal after booking your flight.*
  4. Compare flight options: use Expedia's search tool to compare airlines, routes, direct vs. non-direct flights, and flight times. You can also sort by price to find the most affordable options.
  5. Stay flexible with dates: being open to different travel days can sometimes help you find better prices on flights and hotels.
  6. Think about luggage: nowadays, it's important to check the airline's baggage policies to find the best value. That may be paying for an additional carry-on bag or booking a ticket with checked luggage included. Either way, double-check your allowance before confirming your booking to avoid excess baggage fees at the airport.

*Members only. Savings vary and are not available on all bundles. Select hotels.

Arriving at Portland International Airport from Idaho Falls Regional Airport

Portland welcomes travelers from Idaho Falls with a range of transport options based on price, convenience, and proximity. Here's how to reach Portland efficiently:

  • Hotel transfer: Transfers offer a convenient way to reach your hotel in Portland, with private rides that can be arranged in advance.
  • Car rental: Renting a car from Portland International Airport is a great option if you plan to explore and sightsee beyond the city. Browse cheap car rentals at Portland International Airport on Expedia.
  • Taxi/ride-hailing: Taxis and ride-hailing services may be available from designated pickup areas outside the terminal, check locally on arrival.
  • Public transportation: From Portland International Airport, both the Portland International Airport Bus Stop (a bus station) and Portland International Airport Station (a metro station) are conveniently located about 0.3 miles away on foot, providing easy access to local transport. For those looking to travel further, Portland Union Station (a train station) is approximately 9 miles from the airport by car.

Frequently asked questions

How much does a flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.) cost?
You can find cheap one-way flights from $139 and cheap return flights from $237 Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.) with Expedia. One-way flights typically cost between $265 and $1012, and return flights often range between $384 and $1217. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.) ticket fares go up or down.*Typical price ranges based on flights available on Expedia in the last year. Prices include multi-airline options.
What is the cheapest month to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.)?
May is the cheapest month to fly from Idaho Falls, ID (IDA) to Portland, OR (PDX), with average return fares around $282. This is about 36% lower than the average price throughout the year, as May offers pleasant weather and fewer travelers. Other budget-friendly months include January and April.*Averages based on flights available on Expedia in the last year.
Which airlines fly direct from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.)?
Enter IDA to PDX and your travel dates, then apply the 'Nonstop' filter to see only direct flights.
How do I find cheap flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.)?
To find a cheap flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.)?
When flying from Idaho Falls, ID (IDA) to Portland, OR (PDX), the best months are May and January, with average prices around $282 for a return flight. May offers pleasant weather and good travel options, while September and October are popular months, providing a vibrant travel experience.*Prices based on flights available on Expedia in the last year.
What is the earliest flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.)?
The earliest flight from Idaho Falls Regional Airport (IDA) to Portland International Airport (PDX) typically departs at around 5:00 AM, operated by United and Alaska Airlines. This seasonal service is available in July, August, and September, giving you a great opportunity to start your adventure in Portland early. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What are the most popular departure times for flights from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.)?
The most popular departure times for flights from Idaho Falls Regional (IDA) to Portland Intl. (PDX) are in the early morning, from 6am to 9am. About 36% of passengers prefer this time window. Many major carriers, including Alaska Airlines and Delta Airlines, offer flights during this window. This timing is favored because it lets you maximize your day in Portland after arriving in the morning.
How long does it take to fly from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.)?
Flights from IDA to PDX with one stop typically take around 6 hours, covering approximately 537 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.)?
First class seats are offered on the IDA to PDX route. First class cabins are available on:

  • Delta Air Lines
  • United Airlines
  • American Airlines

How do I earn miles on a Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.) flight with Expedia?
It's easy to earn miles on a Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Portland from Idaho Falls Regional (IDA)?
When traveling from Idaho Falls Regional (IDA) to Portland, you can fly into Portland Intl. (PDX) and Portland Intl. Jetport (PWM). Some flights may connect through major hubs like Seattle - Tacoma Intl. (SEA), Denver Intl. (DEN), Salt Lake City Intl. (SLC) before reaching Portland. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.) at the last minute?
Typically, booking a last minute flight from Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.) flight and hotel package?
Securing a Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.) Portland Vacation Packages is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals 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, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.)?
If you booked your Idaho Falls, ID (IDA-Idaho Falls Regional) to Portland, OR (PDX-Portland Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any 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 if you'd like more information.

Travel information

Origin airport
Idaho Falls Regional
Destination airport
Portland Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$234
Distance
536 mi
Average flight time
1 hour 53 mins

Book with confidence

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 $139 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.

 

Idaho Falls to Portland Flights

*Flight schedules are subject to change.

*Available to One Key members.

 

Explore a world of travel with Expedia