IDA - PDX

$110 Find Cheap Flights from Idaho Falls to Portland

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to Portland departing on 9/29. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Portland

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Portland, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Portland, as well as popular online travel agencies
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Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to Portland that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Idaho Falls to Portland

Fri, Dec 5 - Fri, Dec 12
Allegiant Air Logo
3:26 pm - 4:11 pmIDA-PDX
1h 45mnonstop
Allegiant Air Logo
12:01 pm - 2:36 pmPDX-IDA
1h 35mnonstop
$111Allegiant Air
Find Deal
Fri, Dec 5 - Fri, Dec 12
 Logo
3:26 pm - 4:11 pmIDA-PDX
1h 45mnonstop
 Logo
12:52 pm - 11:59 amPDX-IDA
22h 07m2 stops
Fri, Dec 5 - Fri, Dec 12
 Logo
3:26 pm - 4:11 pmIDA-PDX
1h 45mnonstop
 Logo
7:28 pm - 11:59 amPDX-IDA
15h 31m1 stop
Sat, Oct 11 - Wed, Oct 15
Alaska Airlines Logo
6:00 am - 12:25 pmIDA-PDX
7h 25m1 stop
Alaska Airlines Logo
1:25 pm - 10:38 pmPDX-IDA
8h 13m1 stop
$302Alaska Airlines
Find Deal
Mon, Nov 3 - Sun, Nov 9
 Logo
8:52 pm - 11:56 amIDA-PDX
16h 04m2 stops
 Logo
7:57 pm - 1:07 pmPDX-IDA
16h 10m1 stop
Fri, Oct 24 - Wed, Oct 29
Alaska Airlines Logo
4:15 pm - 6:20 amIDA-PDX
15h 05m1 stop
Alaska Airlines Logo
5:30 pm - 11:59 pmPDX-IDA
5h 29m1 stop
$332Alaska Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5
Delta Logo
1:15 pm - 8:51 pmIDA-PDX
8h 36m2 stops
Delta Logo
5:30 am - 12:33 pmPDX-IDA
6h 03m2 stops
$334Delta
Find Deal
Wed, Oct 29 - Wed, Nov 5
Hawaiian Airlines Logo
3:50 pm - 8:37 pmIDA-PDX
5h 47m1 stop
Hawaiian Airlines Logo
7:30 am - 3:13 pmPDX-IDA
6h 43m1 stop
$339Hawaiian Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
Delta Logo
6:53 pm - 11:57 pmIDA-PDX
6h 04m2 stops
Delta Logo
3:19 pm - 10:15 pmPDX-IDA
5h 56m2 stops
$364Delta
Find Deal
Wed, Oct 29 - Sun, Nov 2
Hawaiian Airlines Logo
3:50 pm - 8:37 pmIDA-PDX
5h 47m1 stop
Hawaiian Airlines Logo
5:30 pm - 11:59 pmPDX-IDA
5h 29m1 stop
$396Hawaiian Airlines
Find Deal

Everything you should know

Top airlines
Allegiant Air
Cheapest • from $111 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
2 weeks
in advance
Our data shows that travelers who book at least 2 weeks in advance save around 47% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 57% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Nonstop flights
4 days a week
There are direct flights from Idaho Falls to Portland 4 days a week: Mon, Wed, Fri, Sat.
Direct flights
Direct flights
Direct flights
Direct flights
Cheapest round-trip
$111
Typical prices: $188-348
Allegiant Air
Fri 12/5Fri 12/12
IDA - PDX • Non-stop
Cheapest one-way
$110
Typical prices: $129-213
Multiple Airlines
Mon 9/29
IDA - PDX • 1 stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Portland!
Booking Insights

KAYAK's insights & trends for Idaho Falls to Portland flights

Get data-powered insights and trends into flights from Idaho Falls to Portland to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Idaho Falls to Portland?

What’s the cheapest day of the week to fly from Idaho Falls to Portland?

The average price of all round-trip flights from Idaho Falls to Portland clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Portland on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Saturday is the most expensive day to fly from Idaho Falls to Portland. For your return ticket, we recommend flying on a Monday and avoiding Fridays for the best deals.

What is the cheapest month to fly from Idaho Falls to Portland?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Idaho Falls to Portland, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Idaho Falls to Portland is April, where tickets cost $90 (return) on average. On the other hand, the most expensive months are September and November, where the average cost of round-trip tickets is $418 and $326 respectively.

How far in advance should I book a flight from Idaho Falls to Portland?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Idaho Falls to Portland, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Idaho Falls to Portland, you should book around 2 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 14 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$110
Best time to beat the crowds with an average 53% drop in price.
Most popular time to fly and prices are also 46% lower on average.
Flight from Idaho Falls to Portland

When to book flights from Idaho Falls to Portland

Are your dates flexible? Find out the best times to travel from Idaho Falls to Portland based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Idaho Falls to Portland

  • Which is the best way to get downtown Portland from Portland International Airport (PDX)?

    You can easily commute from Portland International Airport (PDX) to the city center of Portland via bus. Central Oregon Breeze bus runs regularly between these two points, covering the 12.4-mile distance in approximately 20 minutes. The service operates daily. However, if you want to get there in under 17min, consider taking a taxi.

  • Are there car rentals at PDX?

    Nothing beats the flexibility and convenience of exploring the city of Portland in a car. To this end, you won’t be surprised to find a wide range of hire agencies running their desks here, including Enterprise and Hertz. Their desks are located in the parking garage first level, opposite the luggage claim. Make early reservations to enjoy affordable rates.

  • Which family amenities are at Portland International Airport (PDX)?

    PDX features designated lactation rooms where moms with kids can escape to breastfeed and breast pump in privacy. These private suites are situated in the concourse Level, adjacent to gates 5 and 6, and contain comfortable chairs, power sockets, changing tables and sinks.

  • Are there smoking areas at Portland International Airport (PDX)?

    ​​​​​​​The airport policy forbids lighting a cigarette within the arrival halls and inside the terminal. Nevertheless, you may smoke in the spaces outside the arrival terminals. Ask the airport personnel for directions.

  • What is the cheapest flight from Idaho Falls to Portland?

    In the last 3 days, the lowest price for a flight from Idaho Falls to Portland was $110 for a one-way ticket and $111 for a round-trip.

  • Do I need a passport to fly between Idaho Falls and Portland?

    A passport is not required to fly from Idaho Falls to Portland.

  • Which airports will I be using when flying from Idaho Falls to Portland?

    When flying out of Idaho Falls you will be using Idaho Falls Fanning Field. You will be landing at Portland, also known as Portland.

  • Which airlines offer Wi-Fi service onboard planes from Idaho Falls to Portland?

    Only Alaska Airlines offers inflight Wi-Fi service on the Idaho Falls to Portland flight route.

  • Which aircraft models fly most regularly from Idaho Falls to Portland?

    The Airbus A320-100/200 is the aircraft model that flies most regularly on the Idaho Falls to Portland flight route.

  • Which airline alliances offer flights from Idaho Falls to Portland?

    oneworld, Star Alliance, and SkyTeam are the airline alliances operating flights between Idaho Falls and Portland, with SkyTeam being the most commonly used for this route.

  • Which is the best airline for flights from Idaho Falls to Portland, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Idaho Falls to Portland are Alaska Airlines and Delta. With an average price for the route of $426 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $418 and an overall rating of 7.9.

  • How does KAYAK find such low prices on flights from Idaho Falls to Portland?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Idaho Falls to Portland.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Idaho Falls to Portland?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Portland from Idaho Falls is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Idaho Falls to Portland?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Portland with an airline and back to Idaho Falls with another airline. Booking your flights between Idaho Falls and PDX can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Idaho Falls to Portland?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Portland from Idaho Falls up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Idaho Falls to Portland

  • Portland International Airport (PDX) is the hub for Alaska Airlines. The carrier uses Concourse B upon arrival. Still at the same concourse, close to the entrance is the Alaska Lounge. Any travelers can access this suite regardless of the airline you’re flying with, provided you pay for the day’s pass.Travelers using this amenity enjoy priority access as part of the fast lane program.
  • The departure and arrival ports have amenities which are wheelchair accessible, including toilets and bathrooms for limited mobility passengers. Furthermore, you’ll find friendly agents ready to aid your passage through the security and customs desk, and at the boarding gate. Remember to contact your airline in advance for any specialized services.
  • Several hotels are within easy reach of the Idaho Falls Fanning Field Airport, making it convenient if you have an early morning flight. Residence Inn by Marriott Idaho Falls and Best Western Driftwood Inn are two nearby hotels that provide courtesy shuttles to and from the airport. You’re thus sure of reaching your terminal in time for your departure.
  • Delta Airlines is one of the carriers that allow passengers to bring their pets into the cabin when flying from Idaho Falls to Portland. Usually, the furry friends permitted onboard include household animals such as cats and dogs. The airline will require you to produce their valid medical certificates, and lock your pets in their cages during the trip.
  • Portland International Airport (PDX) runs an art program for departing and arriving travelers to enjoy. As such, if you reach the terminal ahead of your departure, you can kill off time by exploring the various exhibits. They include the original works like mixed media, photography, and large-scale paintings.

Prefer to fly direct from Idaho Falls to Portland?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Idaho Falls Fanning Field to Portland.
Find which airlines fly direct from Idaho Falls Fanning Field Airport to Portland Airport, which days they fly and book direct flights.

Direct departures

Idaho Falls Fanning Field to Portland

Monday

Allegiant Air

Allegiant Air

Wednesday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

Saturday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Portland to Idaho Falls Fanning Field

Monday

Allegiant Air

Allegiant Air

Wednesday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

Saturday

Allegiant Air

Allegiant Air

See more direct flights

Reviews of the top 4 airlines serving from Idaho Falls to Portland

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to Portland. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Idaho Falls to Portland? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
8.1Boarding
7.8Comfort
8.5Crew
7.0Entertainment
7.1Food
Airline reviews

The first leg of the trip was excellent. Lovely flight attendants and comfortable plane. The second leg left a lot to be desired. The flight attendant was rude when I asked for a Diet Coke, the boarding required quite a long walk and the plane was crammed and uncomfortable.

10.0 ExcellentAnonymous, Sep 2025ONT - PDX
Read more Alaska Airlines reviews

The first leg of the trip was excellent. Lovely flight attendants and comfortable plane. The second leg left a lot to be desired. The flight attendant was rude when I asked for a Diet Coke, the boarding required quite a long walk and the plane was crammed and uncomfortable.

Planes were on time. Pilot kept everyone updated. Crew was friendly and helpful

You no longer give receipts for baggage at the counter. And it is next to impossible to get it on your webpage. Spent 20 min trying and gave up... I need receipt to submit for reimbursement and don't have time to waste on your poor webpage Disappointing .....

The flight attendants were unkempt and show no customer service skills. They avoided eye contact. There were no smiles and they were dismissive and snarky.

Complete flight rebooked and 6 hours delayed. Zero accountability from the airline or Kayak for the issues and I’m injured which is why I opted to pay more to fly than drive because it’s painful to sit or stand too long. What was supposed to be a 3ish hour travel day turned into a 9 hour excruciatingly painful experience that has left me in worse pain than when I initially started.

It was a good flight, short so there was no food or water service

Checking in very confusing compared to Hawaiian Airlines - much simpler! Front checking in at airport can improve. Hawaiian service always gives the extra mile, with a smile. Alaska can use and spread the Aloha Spirit. Mahalo nui loa Thank you 🤙

Plane was delayed getting boarded and then again delayed in take-off order. Alaska Airlines must have very little clout at JFK so they don't get priority treatment. All the delays meant we missed the last flight from Portland to Eugene. Alaska did give us hotel voucher for the night...but sent us to a downtown Portland hotel rather than to a nearby airport motel which made for a longer ride at night and then again in the morning. Just made an already long, late night even longer. Hotel was an old outdated Hilton in a slightly seedy part of town. Alaska gave us Lyft vouchers for getting to the hotel, but the return voucher for getting back to the airport in the morning didn't work.

Not a fan of a 5 hour delay. I received a text from Alaska Airlines advising I would get a $100 travel voucher via email. Several days later I still haven’t received it.

My email notifications were silenced, so I didn't get word that the departing flight had changed gates. It wasn't until I noticed that few people had gathered for the flight that I checked the airport schedule board, 20 minutes before boarding. I then told several people at the old gate of the change. If I was to receive a text I would have been notified of the change earlier, Or to hear an announcement over the airport intercom.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

This route with Delta always has delays or is cancelled. Aircrafts seem smaller and older. I fly Delta quite a bit - haven’t had issues with the international flights. But this route has always been the troublesome one

Three seats in first class were broken and while they were able to still acommodate us it was looking very touch and go and they had others they could not acommodate

Mechanic delay in addition to a 2 hour change in takeoff time was frustrating.

Delayed due to thunderstorms and no in-flight service due to rough weather — both of which are out of Delta’s control. Flight was good overall.

The flight attendants in SLC were rude. I arrived 40 minutes early to gate. Ticket said I needed check in for seat assignments and tried check in and attendants said they weren’t doing it. And proceeded to never call me to give me a ticket so when time to board I received the very last seat. Please relay to employees to do their job better..,

They we able to seat my companion and I next to each other. Plane’s temperature was very cool. Willl be more prepared on return trip.

All was good and they were able to seat my travel companion next to me. Thank you.

Like the ample leg room. May as well not bother with snacks if it's only a two ounce bag of pretzels. Didn't use the entertainment option. Was there one?

What an amazing flight. I haven’t experienced this level of service in a flight in years. This will be the only way to fly to Hawaii for me in the future.

Kayak sold me a ticket after check in time. Could not check in. Could not get on flight.

Love you guys are so friendly and kind and wonderful

Agents talk too fast over intercom. I know it’s memorized and we’ve all heard it before. Just slow down a little. Stop charging for checked bags. I was pleased to get my bags promptly at each end of my flight.

Everything was great except having to check in at Alaska. That was a surprise and took extra time and effort. Should have been explained somewhere maybe on the HA electronic ticket.

It was clean and the crew was great. I wish the chairs could recline just a little more and you would provide small pillows for people with bad backs. My back is fused and a little support would be great.

I accidentally made this purchase and they wouldn’t refund me even though I called immediately to cancel it.

Crew was great. No entertainment and food and beverage was for purchase only, even water

It was canceled. The flight wasn’t rescheduled, everyone had to figure out their own new arrangements. They said we would get refunded our original fare and receive an additional $150. We received links for $100 only and they expired before we could activate them.

The plane had originated in Las Vegas at 6:30 in the morning and flew to Moline where we boarded. The flight left around 12:30 PM and there were no boxed snacks available and many of the alcoholic beverages were unavailable. I would find it hard to believe that that many of the passengers coming from Las Vegas at 6:30 in the morning, drank and ate that much of the items. I can only come to the conclusion that someone failed to stock the plane for the round-trip. This is a huge revenue failure for the airline and disappointment for the passengers. The flight crew did not seem happy to be there and did not engage with passengers. Allegiant you can do better.

They did not let my husband on the plane with our service animal at the last minute. Do NOT fly this airline with a service animal!

Tight! Seats are not designed for those of us who wear extra-large clothes.

The non-stop flight from Grand Rapids was excellent. I neither expected or needed a budget flight and Allegiant made the trip easy and for an affordable price, Arriving at the Mesa Airport (AZA) is a delight compared to the international airport. For our return flight, we were able to arrive 75 minutes before the flight, return the rental car, check our bag and make it to the gate in plenty of time. That would never happen at most airports.

Easiest flights I’ve ever taken. Plane was comfortable without overly crowded seating.

Terrible. Still have not received the refund from them. They sent it to some account that I don't even know. Spoke with costumer service and they are unable to help.

I didn’t like it at all. I miss my second flight because of the delay on Allegiant Air now I m stuck in MCO.

Good, but a bit late on take off after loading. Don't like charging for carry ons!

Everything you need to know for your flight from Idaho Falls to Portland

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