$106 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 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

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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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Cheap Flights from Idaho Falls to Washington

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Seattle
Seattlenonstop$187
Spokane
Spokane2 stops$286
Pasco
Pasco1 stop$269
Seattle
Seattlenonstop$187
Spokane
Spokane2 stops$286
Pasco
Pasco1 stop$269

Book Cheap Idaho Falls to Washington Plane Tickets

 
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

Tue, Sep 23 - Tue, Sep 30
Hawaiian Airlines Logo
6:13 am - 7:10 amIDA-SEA
1h 57mnonstop
Hawaiian Airlines Logo
7:55 pm - 10:39 pmSEA-IDA
1h 44mnonstop
$187Hawaiian Airlines
Find Deal
Thu, Oct 30 - Sat, Nov 1
Hawaiian Airlines Logo
3:50 pm - 4:54 pmIDA-SEA
2h 04mnonstop
Hawaiian Airlines Logo
9:15 pm - 11:59 pmSEA-IDA
1h 44mnonstop
$197Hawaiian Airlines
Find Deal
Tue, Oct 14 - Wed, Oct 22
Alaska Airlines Logo
6:00 am - 7:11 amIDA-SEA
2h 11mnonstop
Alaska Airlines Logo
12:55 pm - 3:38 pmSEA-IDA
1h 43mnonstop
$208Alaska Airlines
Find Deal
Sat, Dec 27 - Tue, Dec 30
Alaska Airlines Logo
6:00 am - 7:20 amIDA-SEA
2h 20mnonstop
Alaska Airlines Logo
9:20 pm - 12:06 amSEA-IDA
1h 46mnonstop
$238Alaska Airlines
Find Deal
Wed, Sep 17 - Tue, Sep 23
Delta Logo
6:51 pm - 11:52 pmIDA-PDX
6h 01m1 stop
Delta Logo
5:10 pm - 10:25 pmPDX-IDA
4h 15m1 stop
$239Delta
Find Deal
Wed, Sep 17 - Tue, Sep 23
Delta Logo
6:51 pm - 11:52 pmIDA-PDX
6h 01m1 stop
Delta Logo
7:15 am - 10:25 pmPDX-IDA
14h 10m2 stops
$266Delta
Find Deal
Mon, Sep 15 - Thu, Sep 25
 Logo
9:39 pm - 11:11 amIDA-PDX
14h 32m1 stop
 Logo
7:22 pm - 4:05 pmPDX-IDA
19h 43m1 stop
Mon, Sep 15 - Thu, Sep 18
 Logo
9:39 pm - 11:11 amIDA-PDX
14h 32m1 stop
 Logo
1:08 pm - 4:05 pmPDX-IDA
25h 57m2 stops
Wed, Sep 24 - Sat, Sep 27
United Airlines Logo
5:00 am - 8:54 pmIDA-SEA
16h 54m2 stops
United Airlines Logo
5:00 am - 5:18 pmSEA-IDA
11h 18m1 stop
$500United Airlines
Find Deal
Thu, Sep 11 - Mon, Sep 15
United Airlines Logo
5:56 pm - 8:35 pmIDA-PSC
27h 39m1 stop
United Airlines Logo
12:45 pm - 5:23 pmPSC-IDA
27h 38m1 stop
$547United Airlines
Find Deal
Booking Insights

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?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Washington from Idaho Falls found in the last 72 hours was to Seattle, at $207 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 $207.

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.

No, with an average price for the route of $506, prices are generally cheapest when you fly direct.

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 March, when the average cost of round-trip tickets is $373 and $338 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 Saturday 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 2 weeks before departure, which saves you about 28% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 7 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$106
Best time to beat the crowds with an average 9% drop in price.
Most popular time to fly and prices are also 18% 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 9% 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 $461.

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 $95 one-way - $75 round-trip; Seattle $200 one-way - $335 round-trip

Reviews of the 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
8.5Crew
8.1Boarding
7.0Entertainment
7.8Comfort
7.1Food
Airline reviews

Mostly good. Delayed which in my experience so far happens often with Alaska Airlines. Thank you.

6.0 GoodAnonymous, Aug 2025JNU - SEA
Read more Alaska Airlines reviews

Mostly good. Delayed which in my experience so far happens often with Alaska Airlines. Thank you.

Excellent overall, but had to wait 30 months while taxiing. In fact, I’m still on the plane now!

We received a check-in reminder the day before the flight, and it listed the flight at a later time. Correct flight number, same seats, etc. for 3 hours later. I called the airline to confirm and they had no record of the email. The info was wrong, and we would have missed our flight if we'd assumed it was correct. I want to know where/how we received this incorrect info.

Middle seat, elbow wars. I cannot understand why they load the front of the plane first. You would think it would be more efficient to load the back to the front. I believe it is. And it needs to be changed.

Paid extra $230 to check frozen fish on arrival to LAX. I was told my bags miss my flight and we’re gonna be on the next flight that comes in two hours later regrettably my family was here to pick me up so I had to drive all the way home to drop them off then turn around and come back if I had waited on Alaska to deliver them they told me that they would be delivered in 4 to 6 hours after 8 AM tomorrow which would’ve caused the fish to spoil stink and be a lost cause they would’ve put about $2500 worth of fish down the drain very unhappy with Alaska Airlines for not getting my baggage here, especially since I had to pay for the extra service

I was very pleased with this trip from Anchorage to Seattle and Seattle to Billings. Wheelchair assistance was rendered and gratefully accepted. Unlike my outbound flights to Seattle I did not have long, painful walks on a bad knee to get to airport gates. My thanks to the Alaska staff.

No issues at all other than the seats. Of all the airlines I've flown on in my life (this was my first with Alaska Airlines), these were significantly the most uncomfortable seats I've had - more so than Spirit Airlines. I'm a relatively young guy and mostly fit but oof, i was aching in muscles I didn't even know I had. Not sure if the seats are standard for the plane (if it even works like that) or if the choice to use cardboard as cushion and 90 degree angle back rests was a decision, but it wouldn't honestly make me think twice about flying with them again. Other than that - perfect flight. It was quick, crew was nice, ride was smooth so all things considered I appreciate the last minute availability offered after a sudden relocation on my part.

Short flight was fine, but no entertainment and bathrooms broken.

All went smoothly. Only one delay departing Seattle of around 30 minutes.

We were in 1st class. Haven’t flown 1st class in over 35 years. This was special trip. 30yr anniversary and family travel. Food was good for airline food. Crew was very attentive.i expected easier movie access. Had to use own device. Second leg with Hawaiian airlines was exceptional in every way.

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..,

On this flight I felt the food offering was not as complete as on previous flights. The tomato salad was a bit off and there was nothing additional such a bread or butter. The breakfast was only one option, so you either ate what they had or ate nothing. The crew was efficient, but most seemed frustrated throughout the flight. The flight arrived early and was obstacle-free, so I’m overall quite happy, but the shine in the rest of the experience just wasn’t there.

The seats got pretty uncomfortable pretty fast. The armrests are bigger than on other planes, so I had less room in the actual seat. My butt hurt by the end of the flight. :/ comfort was the primary issue. The crew were fantastic!

I believe that a four-hour trip should have a meal. Delta had none.

Great flight with Delta! Boarding was quick and easy, the amenities were solid, and the plane was in great shape. The flight attendants had a fun, lively energy while staying professional. All in all, a smooth trip — even managed to catch up on some rest. Thanks, Delta!

I was uncomfortably cold on the plane. Other than that it was uneventful and therefore as enjoyable as a plane ride can be.

I could not believe that on a 5 hour plus flight we were not given a complimentary meal . That should be illegal. Or it would be nice to be informed beforehand that a complimentary meal would not be provided. The wording in the email I got about pre ordering food was phrased in a way that made the food seem like it would be free. Very misleading! Also during boarding we were informed there would be empty seats we could move to if we wanted, all we had to do was wait for an announcement, however an announcement was never made. Then when we tried to change seats ourselves we were singled out over the loud speaker and told we could not move without asking. Then the flight was about to take off , so we didn’t have time to ask . Then we were told we could not move to the exit row because you had to pay for those seats, but we were not told where we could move. Also no one was in the exit rows so , if something happened no one would be there to assist the passengers. Also people should be allowed to move there if the airline wasn’t able to sell them. One passenger asked if he could pay for the upgrade and the flight attendant said she did not have the capability to charge for the seat on her mobile device, so the airline ended up losing possible income anyways . So why not let people move there during flight if you have no way to charge them? Then the landing was bumpy and awful and many passengers complained out loud when we landed .

I like that you have eliminated plastic cups, bottles and straws. The crew was conscientious about separating the used paper cups from the trash. This change to paper is a great move and makes me want to choose Alaska when I fly.

Boarding was fine, but once on we waited for 45 minutes to take off. This caused me to almost miss my connection. Once the second flight was boarded we waited again for 20-30 minutes to take off.

Attendants seemed un-engaged and indifferent when asked for assistance.

Overall it was a good flight. The thing I most appreciated was that you eliminated plastic cups and water bottles and stir sticks and had paper cups, wood stir sticks and cans. Plus, I saw that the airline staff were actually keeping the used paper cups separate and unfolding the used cardboard meal boxes and keeping those items separate from the trash. Good for them! This makes me want to support Alaska Airlines and fly Alaska again. Thank for taking this step in working to reduce single use plastics! Kudos!

It was pretty good except there was no food, which was understandable because it was a short flight but I would have liked to at least have a snack; otherwise it was great. Staff/crew, great. Thank you

I was on Alaska and its backup airline. I was scheduled for wheelchair service but ON ONE SHOWED UP. When I asked, desk attendant said they didn’t have any.

As noted above, getting on to the plane was rushed and upsetting since no boarding passes were available to me prior to boarding. Others were in line waiting as well. The flight and experience itself was fine. Very large plane. Two seats near windows; 4 seats in the middle aisles. Good leg room though and comfortable seats.

The trip was fine, however once we reached Seattle, our next flight only had an hour turn-around time and we had to cross the entire Seattle airport, taking three shuttles. Once there, Alaska/Hawaiian Air had still not issued my boarding passes to us and we had to wait at the counter for them. Boarding was already started and at the second to last seating level when we finally got our boarding passes. This was a bit nuts.

I am disappointed with Alaska. They are just like the cheapo airlines, nickle and dimeing us for everything. We now have to pay extra to pick our seats? Really?

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

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