PDX - IDA

$113 Find Cheap Flights from Portland to Idaho Falls

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Idaho Falls departing on 5/22. 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, 0 bags

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

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

Cheapest round-trip
$113
Overall average: $162
Allegiant Air
Fri 5/22Mon 5/25
PDX - IDA • Non-stop
Cheapest non-stop
$357
Alaska Airlines
Wed 5/13Wed 5/20
PDX - IDA • Non-stop
Top airlines
Allegiant Air
Cheapest • from $113 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top layover airports
Salt Lake City (SLC)
Cheapest • Avg $449 (round-trip)
Seattle (SEA)
Shortest trip • 4h 03m (one-way)
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 63% price drop
July
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
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We hope you love your trip to Idaho Falls!
Flight Deals
Booking Insights
Flight Deals

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

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Portland to Idaho Falls 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 Portland to Idaho Falls

Fri, May 22 - Mon, May 25
Allegiant Air Logo
3:10 pm - 5:49 pm
PDX
-
IDA
1h 39mnonstop
Allegiant Air Logo
6:39 pm - 7:20 pm
IDA
-
PDX
1h 41mnonstop
$113Allegiant Air
Wed, May 13 - Wed, May 20
Alaska Airlines Logo
5:46 pm - 10:53 pm
PDX
-
IDA
4h 07m
1 stop
Alaska Airlines Logo
4:03 pm - 4:50 pm
IDA
-
PDX
1h 47mnonstop
$210Alaska Airlines
Fri, May 22 - Mon, May 25
Multiple Airlines Logo
3:10 pm - 5:49 pm
PDX
-
IDA
1h 39mnonstop
Multiple Airlines Logo
6:00 am - 9:47 am
IDA
-
PDX
4h 47m
1 stop
$232Multiple Airlines
Wed, May 13 - Wed, May 20
Alaska Airlines Logo
2:49 pm - 10:53 pm
PDX
-
IDA
7h 04m
2 stops
Alaska Airlines Logo
4:03 pm - 4:50 pm
IDA
-
PDX
1h 47mnonstop
$253Alaska Airlines
Tue, Mar 3 - Tue, Mar 10
Delta Logo
5:45 am - 12:22 pm
PDX
-
IDA
5h 37m
1 stop
Delta Logo
6:55 pm - 11:54 pm
IDA
-
PDX
5h 59m
1 stop
$303Delta
Tue, Jun 16 - Mon, Jun 22
Alaska Airlines Logo
9:00 am - 3:40 pm
PDX
-
IDA
5h 40m
1 stop
Alaska Airlines Logo
4:14 pm - 4:50 pm
IDA
-
PDX
1h 36mnonstop
$307Alaska Airlines
Mon, Apr 13 - Mon, Apr 20
Alaska Airlines Logo
1:35 pm - 10:52 pm
PDX
-
IDA
8h 17m
1 stop
Alaska Airlines Logo
4:59 pm - 9:38 pm
IDA
-
PDX
5h 39m
1 stop
$317Alaska Airlines
Tue, Mar 17 - Tue, Mar 24
Alaska Airlines Logo
5:50 pm - 5:19 pm
PDX
-
IDA
22h 29m
2 stops
Alaska Airlines Logo
5:59 pm - 11:44 pm
IDA
-
PDX
6h 45m
1 stop
$322Alaska Airlines
Tue, Jun 16 - Mon, Jun 22
Alaska Airlines Logo
9:00 am - 3:40 pm
PDX
-
IDA
5h 40m
1 stop
Alaska Airlines Logo
4:14 pm - 4:50 pm
IDA
-
PDX
1h 36mnonstop
$347Alaska Airlines
Wed, May 13 - Wed, May 20
Alaska Airlines Logo
2:49 pm - 10:53 pm
PDX
-
IDA
7h 04m
2 stops
Alaska Airlines Logo
1:54 pm - 6:43 pm
IDA
-
PDX
5h 49m
1 stop
$352Alaska Airlines
Booking Insights

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

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

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

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

For Portland to Idaho Falls, Friday is the cheapest day to fly on average and Wednesday is the most expensive. Flying from Idaho Falls back to Portland, the best deals are generally found on Thursday, with Wednesday being the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Portland to Idaho Falls, 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 Portland to Idaho Falls is April, where tickets cost $97 (return) on average. On the other hand, the most expensive months are January and September, where the average cost of round-trip tickets is $496 and $463 respectively.

Can I save money by flying with a layover from Portland to Idaho Falls?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $193 on average.

Good to know

Low seasonOctober
Cheapest flight$113
Best time to beat the crowds but there is an average 36% increase in price.
Most popular time to fly and prices are also 45% lower on average.
Flight from Portland to Idaho Falls

When to book flights from Portland to Idaho Falls

Are your dates flexible? Find out the best times to travel from Portland to Idaho Falls 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 Portland to Idaho Falls

  • Will I be able to find any hotels with a location close to the Idaho Falls Regional Airport (IDA)?

    One option that sits just to the south of the entrance to the airport at the junction of Interstate 15 and Highway 20 is the Best Western Plus Cottontree Inn.

  • What types of rental car choices are available to me at the Idaho Falls Regional Airport, and where will I find a rental car company after my flight?

    There are roughly six different major rental car companies that operate at this airport, and all of them sit on the arrival side of the airport as you make your way to the baggage claim area. Once you have picked up your contract and your keys, you will find that all rental cars have a location in the parking lot adjacent to the terminal, right outside the exit of the baggage claim.

  • What are some transportation choices to get me from the Idaho Falls Regional Airport to the center of Idaho Falls after your flight?

    One option that utilizes public transportation is to travel on the Salt Lake Express buses that make the trip from the airport to the downtown area in around 5min. If you would instead like to take a taxi on this route, you should expect a travel time of about 9min.

  • If someone will be dropping me off at the Portland International Airport before a flight, where's the best place for them to drop me off?

    Drivers looking to drop off passengers can use one of the dedicated drop-off areas in front of the terminal building on both the upper and lower-level roadways. It is important to remember that only active unloading of passengers can occur in this location, and drivers cannot leave their vehicles unattended for any amount of time.

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

    In the last 3 days, the lowest price for a flight from Portland to Idaho Falls was $149 for a one-way ticket and $113 for a round-trip.

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

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Portland to Idaho Falls are Alaska Airlines and Delta. With an average price for the route of $409 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 $389 and an overall rating of 7.9.

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

    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 Portland to Idaho Falls.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Idaho Falls from Portland 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 Portland to Idaho Falls?

    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 Idaho Falls with an airline and back to Portland with another airline. Booking your flights between Portland and IDA 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 Portland to Idaho Falls?

    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 Idaho Falls from Portland 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 Portland to Idaho Falls

  • One of the best ways for travelers to get from the downtown Portland area to the Portland International Airport (PDX) without having to drive in your own car is to take the Portland TriMet MAX Red Line that travels from the Old Town Station in downtown Portland to the airport in around 33 minutes.
  • If you want to drive your own car to the Portland International Airport, this airport offers the convenience of its valet parking system, where you can drop off your car right adjacent to the ticket counter. For an even faster service, passengers can check in on the airport website to notify staff of their arrival time at the airport.
  • If you want to find a way to pass some time at the Portland International Airport before a flight, The Art Program at Portland International Airport has a program that rotates works of art in nine different exhibits scattered throughout the terminal buildings.
  • For those passengers that may have difficulty hearing when traveling through the Portland International Airport, this airport features a visual paging system that shows all audio messages on flight information displayed scattered throughout the terminal buildings.
  • If you are making a plan to take a pet or a service animal with you on your trip through the Portland International Airport, this airport features an outdoor pet relief area as well as two indoor relief areas. The outdoor area is just outside of the baggage claim level in the southern part of the terminal building, and the two indoor areas sit near the Alaska Lounge in Concourse C and near Gate D5.

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

 
See real verified KAYAK customer reviews for airlines flying from Portland to Idaho Falls. 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 Portland to Idaho Falls? 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 11905 reviews
7.1Food
8.1Boarding
7.0Entertainment
8.5Crew
7.8Comfort
Airline reviews

The seats were spacious and comfortable. Even in basic economy. However, the flight boarded 30 minutes late.

8.0 ExcellentJulie, Feb 2026
PDX - DCA
Read more Alaska Airlines reviews

The seats were spacious and comfortable. Even in basic economy. However, the flight boarded 30 minutes late.

Alaska used to be a top notch airline. With it's growth it is now in line with the big airlines. Not bad, not great.

Great. I did have a little issue getting into the Lounge, which is likely more an American Airlines issue. I did not carry my physical AAdvantage Executive credit card with me on this trip, which Admirals Club membership is a part of the benefits of having this card. The instructions on the AA website and the Citi cards website make it seem like you don't need the physical card, as both sites state you can enter with your boarding pass and driver's license. But both lounges said you were required to present the physical card (and not the digital version, via Apple Pay), as only the physical card says "Admirals Club" on the back.I also do not have a physical Admirals Club membership card, so while both lounges eventually let me in, both denied me entrance initially for this reason.

Everything from the time I booked my flight through to the end when I got home was smooth and wonderful. Service was great, the flight attendants were attentive and there were no outstanding delays.

Delayed and no entertainment? I also forgot my headphones and immediately reported it and have not heard back yet.

The crew was very friendly. Boarding was quick and efficient.

You need categories to note when food and entertainment are not available. Alaska's system would not update flight info on the board for this flight, so there was some confusion after deplaning from the previous flight as to which gate and depart time were accurate for this flight.

we waited for 50 minutes to check a bag and missed a flight. do better.

The flight crew was very professional and pleasant. Our flight was delayed 3 hours, but Kayak informed me in advance

Before I even boarded this old white man , a fat Samoan lady, and a short brown guy were at the desk. They asked if we could have 15 volunteers to get free checked bags cause it was a full flight. I waited in line, I got up to the short brown guy and he asked for my boarding pass and I showed him, he said that he can’t check my bag because I wasn’t given a seat yet. So he had me go to the next line with the old white guy, but before I switched lines I asked him, well if I go to that line, will I be able to check my bag so I waited in line and he said yeah, it doesn’t matter , I’m good. So I switch lines and wait in the line of the old white man, with every guest before me he was very sweet , making small talk, smiling and had great eye contact( all of the people he was talking to was white) I come up and he doesn’t look at me , then says I’ll be right with you, I wait for him to initiate and when he does he’s like what’s up? I was like the man next to you told me I needed to get checked in before I can check my bag. He’s like what’s your last name and I say Valenzuela , and he said we’re not there yet, all while not smiling, no eye contact like he was with the other guests. He said we’re will call you when I get to you. So I go sit down and I’m sitting down for less than a minute and he calls me and someone else. I go up and say Valenzuela and he’s like who are you and I’m like Valenzuela , he’s like hmm and says don’t go anywhere and calls someone else. I finally get my seat and I go back to the short brown man and ask if I can check my bag and he said there isn’t any room available and I was like? Wait you told me and then the fat Samoan lady said yeah we don’t need anymore bags thank you. I was dumbfounded and just walked away. So rude. Terrible experience and terrible communication on their end.

The landing was the worst I’ve experienced with a flight.

The crew, and fellow passengers, were super gracious and kind. There seemed to be plenty of bin space even though the plane was full. It’s nice to get a glass of wine with dinner in Premiere seating, and there was a lot of food.

First flight out and was 85 minutes delayed. Notification came out way too late

Delta flights recently are always delayed AND at jfk tney get the gates further away (need To walk 20’ to get to them/all the way at the end of the terminal). Not sure whats happening but price doesnt match experience!

Everything I mentioned earlier - the airbus was more comfortable indeed and the experience was further enhanced.

Delta continues to set the benchmark for traveler-friendly service with minimal disruption and clear communication within the mainland US (coast to coast). I am consistently pleased to be a Delta customer, and this experience once again met my expectations. There was a brief delay departing from MIA due to a technical issue that required the aircraft to return to the gate. However, the situation was handled professionally and transparently. Fortunately, my planned layover allowed ample buffer time, so the adjustment caused no stress. Overall, another smooth and reassuring experience.

Good experience and the flight landed early. There was no food I had or entertainment.

Flight was delayed and no reasons provided. After the passengers were boarded, the crew made announcement that the captain has jot arrived and he would take another 15 mins. All passengers patiently sat until the captain came and started. Terrible experience!

Flight was delayed. No information on why it was delayed. After we boarded the flight, , the crew made announcement that the captain hs not arrived and he will take 15 mins more to arrive. Passengers were just sitting patiently for the captain to arrive and start, Terrible experience.

Totally worth the miles to upgrade to Delta Comfort. Plenty of legroom.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

I like that if they asked you to checked in a bag at the gate they give you priority to board

Horrible food and crew. Crew were laughing and talking loud while people were trying to sleep

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

The crew at Hawaiian Airlines was fantastic. Kind and hard working. The pilots were great with giving us all the updates to make sure we were informed.

Very good. Nice plane and we sat in economy plus - bigger seats, more room. They served a meal and snacks, and the meal was an apple stuffed pancake that was very good! The snack for us was a hummus sandwich - also very good. The flight attendants were helpful and nice. They have plenty of movies and shows to watch. My only negative -- they changed our flights around and did not adjust the layovers, so we ended up with a very long and unnecessary layover in Honolulu.

I liked the Starlink WiFi but didn't like how they said they were the only airline to offer a free meal and it turns out to be just a standalone sandwich and then charge for snacks to go with it. Rather have the free snacks like Southwest, but have the option to purchase a decent meal for a 5+ hour flight.

Flight scheduled to take off at 5.55pm but it did not take off until 7pm due to some food delivery delay.

Unfortunately, I was put into the middle seat in the first row of premium seating. Sounds nice right? No! that is the worst seat in the plane. I wish I was in economy rather than be in that seat! There is no seat back pocket, no tray table, no charger. Nothing! so unless you're row mates are willing to let you share their basic amenities any flyer should have, you are stuck. It was the worst experience ever! And the flight attendant forgot to take my drink order. I felt like the forgotten flyer.

Delayed and cancelled flights were hard and very stressful, both ways!

Superb. Staff great. Great flight. As with other airlines, seating too tight and restrictive.

There is not one likable thing about this airline. It’s starts with the deceptive pricing and continues through the whole flight. The worst staff I’ve ever experienced way over priced bags absolutely no food or drink (unacceptable and you should be embarrassed) the seats are cramped and uncomfortable there is no entertainment there is nothing about this trash airline that constitutes any amount of money. It’s worse than spirit and way more expensive it is disgraceful. Do not travel with Allegiant I repeat do not bother no matter what they say the price is it is never ever going to be the right choice I’m mind blown at how awful the entire experience was I’m embarrassed that I chose so poorly I cannot reiterate enough how beyond horrible this company and its staff are, not one person on this flight or at the airport is qualified to sweep up trash on a city sidewalk they should certainly never be given any job that requires a brain or manners or communication with human beings, what a disgrace to the human race. Your criminal chiselers and should be put out to pasture

Great flight. Friendly staff. Free snacks and drinks would be nice. I would love fewer taxes and fees added on.

My 90 year old father flew with me. He needed wheel chair assistance and is nearly deaf. The staff was amazing with him.

It was fine. Nobody was outstandingly friendly but no one was rude and everything was smooth . The captain thanked us for flying but no one greeted me as I walked on the plane or as I exited which is the least they could do lol

Clean, friendly, roomy. But check-in from the phone link was terrible. Repeated attempts wouldn’t save at the final step. Just kept spinning! It was very frustrating. Finally, I used the app (vs website link) to check-in which worked very smoothly on the first attempt.

Check in on the web portal was cumbersome! After several attempts I finally got the boarding pass.

Excellent flight and even arrived 23 min early. No entertainment , or wi fi on board, but I downloaded a couple of movies beforehand which kept me entertained. Really like flying Allegiant airlines.

WE were delayed about an hour and never any communications from the employees working the gate. We also were moved to a total of three gates.

I love how they show love to their customers and care about them too.

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

Information on your arrival and departure airports