$56 Find Cheap Flights from Idaho Falls to Washington

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 Washington departing on 7/25. 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 Washington

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

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seattle
Seattlenonstop$206
Spokane
Spokane1 stop$297
Pasco
Pasco1 stop$513
Seattle
Seattlenonstop$206
Spokane
Spokane1 stop$297
Pasco
Pasco1 stop$513

Cheap Flights from Idaho Falls to Washington

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

Fri, Jun 27 - Fri, Jul 4
Allegiant Air Logo
4:30 pm - 5:07 pmIDA-PDX
1h 37mnonstop
Allegiant Air Logo
1:38 pm - 4:14 pmPDX-IDA
1h 36mnonstop
$91Allegiant Air
Find Deal
Fri, Jul 11 - Mon, Jul 14
Allegiant Air Logo
5:04 pm - 5:41 pmIDA-PDX
1h 37mnonstop
Allegiant Air Logo
1:38 pm - 4:14 pmPDX-IDA
1h 36mnonstop
$95Allegiant Air
Find Deal
Fri, Jul 18 - Sun, Jul 20
 Logo
5:04 pm - 5:41 pmIDA-PDX
1h 37mnonstop
 Logo
3:10 pm - 11:44 amPDX-IDA
19h 34m1 stop
Fri, Jul 11 - Mon, Jul 14
 Logo
7:23 pm - 2:15 pmIDA-PDX
19h 52m2 stops
 Logo
1:38 pm - 4:14 pmPDX-IDA
1h 36mnonstop
Tue, Sep 2 - Sat, Sep 6
Alaska Airlines Logo
6:13 am - 7:10 amIDA-SEA
1h 57mnonstop
Alaska Airlines Logo
7:55 pm - 10:39 pmSEA-IDA
1h 44mnonstop
$207Alaska Airlines
Find Deal
Mon, Aug 25 - Sat, Sep 6
Alaska Airlines Logo
4:03 pm - 4:59 pmIDA-SEA
1h 56mnonstop
Alaska Airlines Logo
7:55 pm - 10:39 pmSEA-IDA
1h 44mnonstop
$217Alaska Airlines
Find Deal
Tue, Sep 2 - Sat, Sep 6
Delta Logo
3:00 pm - 7:00 pmIDA-SEA
5h 00m1 stop
Delta Logo
9:40 am - 2:19 pmSEA-IDA
3h 39m1 stop
$227Delta
Find Deal
Wed, Aug 6 - Tue, Aug 12
Delta Logo
6:52 pm - 11:59 pmIDA-SEA
6h 07m1 stop
Delta Logo
5:30 am - 10:39 amSEA-IDA
4h 09m1 stop
$237Delta
Find Deal
Wed, Jul 9 - Thu, Jul 10
Hawaiian Airlines Logo
6:15 am - 7:11 amIDA-SEA
1h 56mnonstop
Hawaiian Airlines Logo
7:55 pm - 10:39 pmSEA-IDA
1h 44mnonstop
$266Hawaiian Airlines
Find Deal
Wed, Aug 6 - Tue, Aug 12
Hawaiian Airlines Logo
4:03 pm - 5:00 pmIDA-SEA
1h 57mnonstop
Hawaiian Airlines Logo
7:55 pm - 10:39 pmSEA-IDA
1h 44mnonstop
$268Hawaiian Airlines
Find Deal
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KAYAK's insights & trends for Idaho Falls to Washington flights

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

What is the cheapest Idaho Falls to Washington flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Idaho Falls to Washington.

The cheapest ticket to Washington from Idaho Falls found in the last 72 hours was to Seattle, at $128 round-trip. The most popular route is from Idaho Falls (IDA) to Seattle (SEA), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $128.

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

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 $512 on average.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Idaho Falls to Washington, 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 Washington is April, when tickets cost $227 (return) on average. On the other hand, the most expensive months are January and July, when the average cost of round-trip tickets is $373 and $358 respectively.

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

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

Your flight ticket price will generally be cheaper if you fly to Washington on a Thursday and more expensive on a Tuesday. On your return trip to Idaho Falls, you should consider flying back on a Wednesday, and avoid Sundays for better deals.

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

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 Washington, 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 Washington, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.


Good to know

Low seasonJanuary
High seasonJune
Cheapest flight$56
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 16% lower on average.
Flight from Idaho Falls to Portland

FAQs - booking Washington flights

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

    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 Washington.

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

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

    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 from Idaho Falls to Washington with an airline and back with another airline.

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

    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 from Idaho Falls to Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

  • What is the cheapest time of day to fly to Washington?

    The cheapest time of day to fly to Washington is generally at night, when round-trip flights cost $240 on average. Morning departures are around 10% more expensive than evening flights, on average. The most expensive time of day to fly to Washington is generally in the morning, which is peak travel time and where the average cost of a ticket is $475.

Top tips for finding cheap flights to Washington

  • Looking for a cheap flight? 25% of our users found tickets from Idaho Falls to the following destinations at these prices or less: Portland $82 one-way - $86 round-trip; Seattle $160 one-way - $268 round-trip

Top 3 airlines serving from Idaho Falls to Washington

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

The crew the employees were friendly and excellent. There was a problem with the plane and they had workers there immediately working on it. They made sure the people that had immediate connects knew what gates they had to get to and had them leave the plane first. Very thoughtful.

10.0 ExcellentHelen, Jun 2025BLI - SEA
Read more Alaska Airlines reviews

The crew the employees were friendly and excellent. There was a problem with the plane and they had workers there immediately working on it. They made sure the people that had immediate connects knew what gates they had to get to and had them leave the plane first. Very thoughtful.

We waited over an hour for our luggage to arrive at the carousel in Seattle.

Like the friendliness of the crew, each flight had a very very drunk person next to me and the last flight had a very obese man pushing me into the aisle while the crew kept ending up hitting me in the shoulder with the beverage carts.

Flight was about 30 minutes delayed. All staff were friendly and professional while keeping us updated.

My screen was hard to change channels….seemed it was worn out….i just gave up and read a book I brought

Booked a first class ticket from Anchorage to Seattle but was denied complimentary access to Alaska Lounge as our 1500 mile flight wasn’t long enough’

We were lucky to be seated in an upgraded row and received free drinks!!

Everyone was very helpful. My only critique was the very hard landing in Seattle. We felt the G force.

It was absolutely terrible due to the mother and her two children sitting across from us. The 2.5 year old jumped up and down on the tray table. Every time the kid screamed the mom would grab the kid and scream even louder into his face. Horrible flight. The mother stayed on her phone playing while the kids were so destructive to others hanging over seats, she never once tried to comfort or discipline them. She never once said you cannot jump on tray table. Definitely the worst flight ever. It was my first time with Alaska Airlines.

It was great. There was legroom. The food I ordered was creative and flavorful. The crew was kind and fun. Definitely would fly with them again.

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

I am very bothered by the events today. I can't believe the flight attendants allowed someone to take my seat and made me move. It was embarrassing. I was in the right. The lady just didn't want move. I can't believe delta would allow this to stand and disrespect my rights as a passenger. The lady complained about her leg and that she couldn't move. Firstly somehow she was able to make it to row 24. Not sure how much her leg could have hurt. Secondly, I'm in plenty of pain myself. I just finished chemotherapy a several weeks ago. My body is constantly sore. Yet deltas flight attendants didn't appropriately protect my rights. In the end they found me a seat on the plane but I want to understand how delta can operate this way. They in essence allowed a bully to get their way.

Flight was canceled with no voucher of any kind and next available flight was two days later.

Boarding was chaotic. Microphone not working properly and second agent was distracted from task with baggage and late arrivals.

I DID NOT GO TO HAWAII ON HAWAIIAN AIRLINES. YOU DID NOT INFORM ME THAT BY CHOOSING BASIC ECONOMY, I MIGHT BE REQUIRED TO FLY STANDBY. I AM ELDERLY AS WAS MY COMPANION WHO IS ALSO SEVERELY DISABLED AND THERE WOULD BE NO WAY WE COULD TRAVEL ON STANDBY. THEY TOLD ME THAT ALL OF THE BASIC ECONOMY SEATS HAD BEEN SELECTED BY OTHER PASSENGERS AND WE HAD TO PAY AN ADDITIONAL $942 TO GET A SECURED SEAT ON THE PLAN AND, IN SPITE OF THE ADDITIONAL COST, WE WERE NOT ALLOW US TO AMEND OUR TRAVEL PLANS TO EXTEND OUR VACATION. ULTIMATELY, THE FLIGHT WAS DELAYED. WE WERE OFFERED A REFUND IF WE CANCELED OUR TRIP ALTOGETHER WHICH WE DID. IT IS YOUR DUTY TO INFORM YOUR CUSTOMERS OF THE POTENTIAL PROBLEMS THEY MAY FACE, AND YOU DID NOT DO SO. I WILL NOT UTILIZE YOUR SERVICES EVER AGAIN.

It was very pleasant. The staff and crew are very polite.

On time. Alaska upgraded seat comfort with memory foam seat covers with head rests

the people at the counter, NEED TO BE MORE HELPFUL. we had three suitcases to check in and we were not trying to be an INCONVENIENCE TO YOUR clerks. but she was not helpful and made our trip back home memorable but not IN A GOOD WAY. Sadly to say, you guys need to teach to be and to go above and beyond to help THE CUSTOMER BY ANY MEANS POSSIBLE. they need to leave aside whatever they are going thru in their lives, THEIR WORK DEMANDS THAT OF THEM, IF NOT THEY ARE NOT IN THE JOB THEY SUPPOSED TO.

Because the airport is under construction and because Hawaiian air just changed terminals we missed boarding out flight by 5 minutes. That cost me a night in an airport hotel and several hours of rebooking to make it to my destination. Costumers need to know that airport construction is a problem and they need to add an hour to deal with the air train delays from Federal Circle.

Half of my family members didn’t make it because they involuntary bumped off . And their seats where given away

Hawaiian Airlines staff is always professional & quick & easy check in & boarding process

Customer service by Susan of Alaskan Air was outstanding. We missed our flight out of JFK. She got us rebooked the following day. Way to go Susan.

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

Information on your arrival and departure airports

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