PDX - IDA

$80 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 8/4. 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 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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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

Mon, Aug 4 - Mon, Aug 11
Allegiant Air Logo
1:38 pm - 4:14 pmPDX-IDA
1h 36mnonstop
Allegiant Air Logo
5:04 pm - 5:41 pmIDA-PDX
1h 37mnonstop
$80Allegiant Air
Find Deal
Mon, Jul 14 - Mon, Jul 21
Allegiant Air Logo
1:38 pm - 4:14 pmPDX-IDA
1h 36mnonstop
Allegiant Air Logo
5:04 pm - 5:41 pmIDA-PDX
1h 37mnonstop
$90Allegiant Air
Find Deal
Mon, Jul 14 - Mon, Jul 21
 Logo
1:38 pm - 4:14 pmPDX-IDA
1h 36mnonstop
 Logo
7:23 pm - 2:15 pmIDA-PDX
19h 52m2 stops
Mon, Aug 4 - Mon, Aug 11
 Logo
1:38 pm - 4:14 pmPDX-IDA
1h 36mnonstop
 Logo
7:23 pm - 2:15 pmIDA-PDX
19h 52m2 stops
Sat, Sep 6 - Mon, Sep 8
Alaska Airlines Logo
3:40 pm - 10:39 pmPDX-IDA
5h 59m1 stop
Alaska Airlines Logo
3:57 pm - 8:52 amIDA-PDX
17h 55m1 stop
$302Alaska Airlines
Find Deal
Fri, Oct 17 - Mon, Oct 20
Alaska Airlines Logo
8:59 pm - 3:38 pmPDX-IDA
17h 39m1 stop
Alaska Airlines Logo
4:15 pm - 12:25 pmIDA-PDX
21h 10m1 stop
$332Alaska Airlines
Find Deal
Wed, Jul 30 - Wed, Aug 6
Hawaiian Airlines Logo
3:40 pm - 10:39 pmPDX-IDA
5h 59m1 stop
Hawaiian Airlines Logo
6:15 am - 9:50 amIDA-PDX
4h 35m1 stop
$356Hawaiian Airlines
Find Deal
Wed, Jul 30 - Wed, Aug 6
Delta Logo
5:35 am - 10:34 amPDX-IDA
3h 59m1 stop
Delta Logo
6:52 pm - 11:35 pmIDA-PDX
5h 43m1 stop
$357Delta
Find Deal
Fri, Aug 8 - Mon, Aug 11
Delta Logo
5:05 pm - 10:29 pmPDX-IDA
4h 24m1 stop
Delta Logo
6:52 pm - 8:15 amIDA-PDX
14h 23m2 stops
$376Delta
Find Deal
Wed, Jul 30 - Wed, Aug 6
Hawaiian Airlines Logo
5:35 pm - 10:39 pmPDX-IDA
4h 04m1 stop
Hawaiian Airlines Logo
6:15 am - 10:47 amIDA-PDX
5h 32m1 stop
$381Hawaiian Airlines
Find Deal
Useful Info

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.

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

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, Monday 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 Monday, with Saturday 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 June, where tickets cost $104 (return) on average. On the other hand, the most expensive months are September and November, where the average cost of round-trip tickets is $478 and $414 respectively.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure 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 average of all the values for each week.

To get a below average price on the flight from Portland to Idaho Falls, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 17 weeks before departure.

Good to know

Low seasonJanuary
High seasonJuly
Cheapest flight$80
Best time to beat the crowds with an average 33% drop in price.
Most popular time to fly and prices are also 37% 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 $155 for a one-way ticket and $80 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.

  • On which days can I fly direct from Portland to Idaho Falls?

    You can catch a nonstop flight from Portland to Idaho Falls on on Monday, and Friday.

  • 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 $435 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 8.0.

  • 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

  • Looking for a cheap flight? 25% of our users found flights on this route for $56 or less one-way and $85 or less round-trip.
  • 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.

Prefer to fly direct from Portland to Idaho Falls?

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

Direct departures

Portland to Idaho Falls Fanning Field

Monday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

See more direct flights

Direct returns

Idaho Falls Fanning Field to Portland

Monday

Allegiant Air

Allegiant Air

Friday

Allegiant Air

Allegiant Air

See more direct flights

Reviews of the top 3 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 10000 reviews
7.8Comfort
7.1Food
8.5Crew
8.1Boarding
7.1Entertainment
Airline reviews

We have always flown with Alaska when we can. As they have great customer service. This trip we had to transfer to Air LINGUS in Denver to go to Dublin. That’s where things went bad! Our checked luggage didn’t arrive. The process to make a claim was way more complicated than it should be. It took 5 days to recover our luggage. The whole time we couldn’t talk to a real person who could tell us anything. The whole time Alaska blamed Air lingus and vis a versa. No one seemed want to help us. That was the worst part.

2.0 MediocreAnonymous, Jun 2025PDX - DEN
Read more Alaska Airlines reviews

We have always flown with Alaska when we can. As they have great customer service. This trip we had to transfer to Air LINGUS in Denver to go to Dublin. That’s where things went bad! Our checked luggage didn’t arrive. The process to make a claim was way more complicated than it should be. It took 5 days to recover our luggage. The whole time we couldn’t talk to a real person who could tell us anything. The whole time Alaska blamed Air lingus and vis a versa. No one seemed want to help us. That was the worst part.

I'm a platinum member with American Airlines, however, my ticket did not display status and thus I did not board with an early group. I traveled with my two daughters and we were given a row of seats that did not recline. Not the treatment I would have expected for a platinum customer. The flight was also a bit late leaving Portland. Also on my flight to Portland we were not given premium seats. In fact, we were in the last row of the aircraft.

5 hour delay from Portland to Newark. Boarded and then were told we had to get off and wait five hours for flight. No food vouchers or any other compensation because they said it was an air traffic control issue. Plane is bare minimum like a discount airline. They have free entertainment but you have to get to it on your own device no screens in the seats

Very good. Gate personnel were excellent flight attendants were also able to change my seat at the last minute everyone, courteous, polite, and.

On time, smooth take off and landing, efficient boarding. Gate staff excellent, stewardess grumpy, but civil enough.

No WiFi available. It was too late to order food also. Guy next to me was huge (not fat) so had his shoulder & thigh next to me the whole way. Plane was delayed leaving PDX due to 8 other planes waiting. Not my best Alaska airlines flight.

Check in, they should have told me that upon arrival i needed to exit the secure area and re-check in with Eva Air. I wasn't sure what to do upon arrival at S.F.

The direct service from Logan to PDX made travel so easy, I really appreciate this route. Pilots were very communicative with passengers about conditions and expectations. Everyone on staff was pleasant and helpful. Boarding was easy and efficient.

Flight last minute delayed 2 hours for crew calling out sick

Husband was new to the wheelchair accommodations this trip. What a blessing that was. All employees were helpful and customer service was excellent

My flight was canceled after being rescheduled for four days canceling my trip. Kayak and everyone affiliated with it I.e the airlines, and just fly have been excruciating to deal with. My trip to visit family had to be canceled as there was no way to make it. I am furious at all of you.

They delayed our flight because of bad weather in NY which was completely understandable. Then they cancelled our flight and a later flight that evening. The earliest we could fly was the next morning. We ended up buying last minute tickets on another airline and made it home slightly delayed but safely that evening. Delta kept saying it was weather related but if that was the case how did we make it back on another airline? The weather in NY was cloudy but not bad.

From Atlanta to Savannah - flight connection was way to short (we weren't even late landing ) and flight was already boarding when we landed - we were told we were the last on board and so we had to gate check our bags. Once we got on the plane, there were at least seven open bag spots so that was unnecessary delay. There should be better communication between the gate agent and the crew.

Crew was excellent. Comfort seats not as nice as other kinds of planes.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

It was a great flight and the stewards and stewardess were all kind and accommodating!! The seats were comfortable and entertainment screen excellent!

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

Flight was an hour late, who knows why. It was OK, nothing outstanding.

Only not having an assigned seat was an issue. Rest was great

There was a security issue at the airport and we were unable to land. We circled endlessly and then landed at another airfield for fuel. We then circled the airport again, almost landed but didn’t fully touch down before circling again. I am thankful to the crew for keeping us safe- the issue was the airline and staff at the airport getting us seats on our connecting flights. That part was hours of searching for someone and getting in double my steps.

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!

First time flying with them and will definitely fly again in the future. Crew was so nice and friendly, fought was seamless. They are simple planes, no entertainment, but it’s fine for a short flight or if you have personal devices Rates are competitive, and they did so well with keeping the flight on time after a tropical storm, where other airlines had delays and cancellations.

They boarded passengers that sat in the back of the plane first, making boarding very efficient.

I didn't even take this flight. My plans changed and I couldn't get ahold of customer service and the website kept breaking down during the attempt to change the flight. I wound up taking another airline entirely and eating the cost.

The worst flying experience ever 3 delays. No accommodations. Had to deboard the plane after being delayed.

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