PDX - IDA

$36 Find Cheap Flights from Portland to Idaho Falls - Compare and Save

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Portland to Idaho Falls departing on 7/10. 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
$80
Typical prices: $193-$76
Allegiant Air
Fri 7/10Mon 7/13
PDX - IDA • Non-stop
Cheapest one-way
$36
Typical prices: $112-$143
Allegiant Air
Fri 7/10
PDX - IDA • Non-stop
Nonstop flights
Every day
You can fly direct with Alaska Airlines and Allegiant Air. Average duration is 1h 39m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to travel
Cheapest • 71% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
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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, Jul 10 - Mon, Jul 13
Allegiant Air Logo
12:20 pm - 3:00 pm
PDX
-
IDA
1h 40mnonstop
Allegiant Air Logo
3:50 pm - 4:26 pm
IDA
-
PDX
1h 36mnonstop
$80Allegiant Air
Fri, Jul 10 - Mon, Jul 20
Allegiant Air Logo
12:20 pm - 3:00 pm
PDX
-
IDA
1h 40mnonstop
Allegiant Air Logo
3:50 pm - 4:26 pm
IDA
-
PDX
1h 36mnonstop
$82Allegiant Air
Fri, Jul 10 - Mon, Jul 20
Allegiant Air Logo
12:20 pm - 3:00 pm
PDX
-
IDA
1h 40mnonstop
Allegiant Air Logo
3:50 pm - 4:26 pm
IDA
-
PDX
1h 36mnonstop
$84Allegiant Air
Mon, Jul 13 - Mon, Jul 20
Allegiant Air Logo
12:20 pm - 3:00 pm
PDX
-
IDA
1h 40mnonstop
Allegiant Air Logo
3:50 pm - 4:26 pm
IDA
-
PDX
1h 36mnonstop
$86Allegiant Air
Fri, Jun 26 - Mon, Jun 29
Allegiant Air Logo
3:09 pm - 5:49 pm
PDX
-
IDA
1h 40mnonstop
Allegiant Air Logo
6:39 pm - 7:18 pm
IDA
-
PDX
1h 39mnonstop
$110Allegiant Air
Mon, Jul 20 - Fri, Jul 24
Allegiant Air Logo
12:20 pm - 3:00 pm
PDX
-
IDA
1h 40mnonstop
Allegiant Air Logo
3:50 pm - 4:26 pm
IDA
-
PDX
1h 36mnonstop
$112Allegiant Air
Fri, Jul 10 - Fri, Jul 24
Allegiant Air Logo
12:20 pm - 3:00 pm
PDX
-
IDA
1h 40mnonstop
Allegiant Air Logo
3:50 pm - 4:26 pm
IDA
-
PDX
1h 36mnonstop
$119Allegiant Air
Mon, Jun 29 - Fri, Jul 3
Allegiant Air Logo
3:09 pm - 5:49 pm
PDX
-
IDA
1h 40mnonstop
Allegiant Air Logo
3:50 pm - 4:26 pm
IDA
-
PDX
1h 36mnonstop
$167Allegiant Air
Fri, Jul 10 - Sun, Jul 12
Multiple Airlines Logo
12:20 pm - 3:00 pm
PDX
-
IDA
1h 40mnonstop
Multiple Airlines Logo
4:14 pm - 4:50 pm
IDA
-
PDX
1h 36mnonstop
$242Multiple Airlines
Tue, Jul 14 - Fri, Jul 17
Multiple Airlines Logo
10:30 am - 1:06 pm
PDX
-
IDA
1h 36mnonstop
Multiple Airlines Logo
3:50 pm - 4:26 pm
IDA
-
PDX
1h 36mnonstop
$243Multiple 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.

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Portland to Idaho Falls departing in July.

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 Friday, with Tuesday 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 July, where tickets cost $98 (return) on average. On the other hand, the most expensive months are September and January, where the average cost of round-trip tickets is $648 and $496 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.

No, with an average price for the route of $107, prices are generally cheapest when you fly direct.

Good to know

Low seasonApril
Cheapest flight$36
Best time to beat the crowds but there is an average 37% increase in price.
Most popular time to fly and prices are also 72% 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 5 days, the lowest price for a flight from Portland to Idaho Falls was $36 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 airlines offer Wi-Fi service onboard planes from Portland to Idaho Falls?

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

  • 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?

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

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

    There are nonstop flights from Portland to Idaho Falls on a daily basis.

  • 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 $433 and an overall rating of 7.9, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $426 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

  • Looking for a cheap flight? 25% of our users found flights on this route for $64 or less one-way and $82 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

Alaska Airlines,Allegiant Air

Alaska Airlines,Allegiant Air

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines,Allegiant Air

Alaska Airlines,Allegiant Air

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Direct returns

Idaho Falls Fanning Field to Portland

Monday

Alaska Airlines,Allegiant Air

Alaska Airlines,Allegiant Air

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines,Allegiant Air

Alaska Airlines,Allegiant Air

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

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.
7.9
Alaska AirlinesOverall score based on 12521 reviews
7.1Food
7.8Comfort
8.5Crew
7.0Entertainment
8.1Boarding
Airline reviews

Great trip. No complaints. Impressed with the crew’s response to various challenges pre-boarding.

10.0 ExcellentAnonymous, Jun 2026
PDX - OAK
Read more Alaska Airlines reviews

Great trip. No complaints. Impressed with the crew’s response to various challenges pre-boarding.

We were 35 minutes late because the caterer had not stocked the plane. Plane was fully loaded and ready to go 15 minutes before departure time. We sat there 35 minutes?

The seats are too small/crowded. It is frustrating to be forced to sit with someone who is overweight as they crown the other seat. Nothing against the person…just the airline companies who continue(over decades!)to reduce seat sizes. Americans are fat. Those of us who are not are tired of being compromised by the airline companies who don’t faces that fact and make adjustments. Maybe have “overweight seats”? Maybe give us a discount for being forced into an uncomfortable flight due to others overweightness? Please, make adjustments…be accountable. Thanks!

I flew standby with my two children and completely forgot it was Memorial Day weekend. We tried to fly from PDX to YVR. Unfortunately, after four attempts, we gave up and tried SEA instead after the holiday. The ground crew was very helpful, checking us in and accommodating us when we were finally able to get on a flight. The sad part was that they accidentally loaded one of my suitcases on the Vancouver flight without us during one of our attempts to get on a flight, even though it had a standby tag on it. I filed a report with baggage services, and thankfully, it was returned to PDX the following day. AS was in touch with us and updated us on the process of returning the luggage to the USA.

Internet was great. It was nice to watch a movie. The crew was very nice.

On this flight there wer only 25 people on board. So no one in 5 rows ahead of me and noone in 7 rows behind me. So very chill.

Considering my flight to Portland was in a broken chair that I had paid extra for, this one was great. So yeah, wonderful.

Some food or at least snacks need to be offered on long flights. I thought I had ordered food for my husband and I prior to the flight, but was told during the flight that I had not. Perhaps, if you must charge extra for food, let people order on board. We did get some food, which evidently others had decided they didn’t want onboard, but it wasn’t very good. We did like the adherence to takeoff and landing times, and the quick return of our luggage.

Our meal order was screwed up. We had to choose from basic boxes. I was not happy.

The crew was great and everything went smoothly coming and going.

I have Precheck. Flew HPN to DEN and return this past weekend. Delta didn't attach my Precheck number to this trip. So it was waiting in general line especially in Denver. Unavailable.

Original flight was delayed, then cancelled and the gate staff did not expedite rebooking. Also, no instructions were given that a ticket number was needed before being called to facilitate rebooking. This could have been much more organized.

Be on time? When not on time a circling for over an hour offer more than 1 bag of chips to the passengers? It was a 7 hour flight by the time we got done.

Five hour delays every hour, I wish it were all at once

Flight delayed four separate times. I’m now one hour hours late to landing.

worst flight ever from Delta, it got delayed and kept on delaying..

Should never have had to go to Detroit from Orlando back to Tennessee!

Got rerouted from a straight flight from Orlando to Atlanta to Knoxville to a flight from Orlando to Detroit to Knoxville! Seriously!! Flight delay out of Detroit! Long day for what should have been a pretty easy travel day!

Two delays on two separate planes with parts they could not easily find and replace.

Checkin was good, fllight ws good. Onlly complaint is lack of foot on 6 hour flight from Seattle to Boston. Snacks were flimsy - chips and cookies. could have offered something more substantial for such a long flight. I know you can buy food in airport but for the price you pay for a ticket, they should step up for the passengers.

Seats were very uncomfortable and being charged for snacks and water.........

Allegiant actually impressed me, original inbound flight from PBG was so late they gave us a bird inbound from Des Moines and only left 1h late and gained 40 minutes back in the air. Comfortable flight with no frills but no complaints.

Flight was delayed. Crew was good but hot coffee was not available.

Great. No choice for n/a. No food or entertainment options

No food is available without purchasing it and there is no in-flight entertainment. Both of these are OK because we got an inexpensive flight from Allegiant and, otherwise, our experience was excellent.

just had water and there was plenty of leg & seat room. But then i don't weight 220#s!!

Not totally their fault- screaming kids that had zero parent intervention.

It was cold on the flight. The crew was very pleasant. I didn't order any food. We were delayed due to Captain waiting on maintenance log. He kept us informed though. The flight itself was smooth. I would definitely fly with Allegiant again!

I had a fantastic experience with Allegiant. I had wheelchair assistance and they helped me find my luggage and brought me to my car. Even loaded my luggage. Wonderful service!! Thank you Allegiant!

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

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

Information on your arrival and departure airports