$107 Find Cheap Flights from Idaho Falls to Washington

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Idaho Falls to Washington departing on 5/30. 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.
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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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Best Washington Flight Deals from Idaho Falls

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours

Seattle
Seattlenonstop$197
Spokane
Spokane1 stop$294
Pasco
Pasco1 stop$454
Portland
Portlandnonstop$107

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.

Recent round-trip flight deals from Idaho Falls to Washington

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Idaho Falls to Washington.
Discover the best prices for you by selecting your travel dates on KAYAK.
Choose your dates
Allegiant Air Logo
4:50 pm - 5:29 pmIDA-PDX
1h 39mnonstop
Allegiant Air Logo
1:21 pm - 4:00 pmPDX-IDA
1h 39mnonstop
$107Allegiant Air
Find Deal
Fri, May 30 - Mon, Jun 2
Allegiant Air Logo
4:45 pm - 5:22 pmIDA-PDX
1h 37mnonstop
Allegiant Air Logo
1:19 pm - 3:55 pmPDX-IDA
1h 36mnonstop
$111Allegiant Air
Find Deal
Mon, Jun 9 - Mon, Jun 16
Alaska Airlines Logo
6:00 am - 6:51 amIDA-SEA
1h 51mnonstop
Alaska Airlines Logo
12:52 pm - 3:40 pmSEA-IDA
1h 48mnonstop
$197Alaska Airlines
Find Deal
Tue, May 13 - Wed, May 21
Alaska Airlines Logo
6:00 am - 6:51 amIDA-SEA
1h 51mnonstop
Alaska Airlines Logo
7:55 pm - 10:34 pmSEA-IDA
1h 39mnonstop
$207Alaska Airlines
Find Deal
Tue, May 13 - Sun, May 25
Hawaiian Airlines Logo
6:15 am - 7:11 amIDA-SEA
1h 56mnonstop
Hawaiian Airlines Logo
12:47 pm - 3:22 pmSEA-IDA
1h 35mnonstop
$218Hawaiian Airlines
Find Deal
Tue, Jun 17 - Tue, Jun 24
Delta Logo
12:30 pm - 4:44 pmIDA-SEA
5h 14m1 stop
Delta Logo
7:10 am - 11:50 amSEA-IDA
3h 40m1 stop
$227Delta
Find Deal
Tue, May 13 - Sun, May 25
Delta Logo
6:50 pm - 11:59 pmIDA-SEA
6h 09m1 stop
Delta Logo
5:30 am - 11:50 amSEA-IDA
5h 20m1 stop
$237Delta
Find Deal
Mon, May 12 - Sun, May 25
 Logo
4:20 pm - 5:14 pmIDA-SEA
1h 54mnonstop
 Logo
12:47 pm - 3:22 pmSEA-IDA
1h 35mnonstop
Fri, Jun 6 - Fri, Jun 13
Hawaiian Airlines Logo
6:00 am - 10:53 amIDA-GEG
5h 53m1 stop
Hawaiian Airlines Logo
5:49 pm - 10:34 pmGEG-IDA
3h 45m1 stop
$314Hawaiian Airlines
Find Deal
Mon, May 19 - Tue, May 20
 Logo
5:56 pm - 10:55 pmIDA-SEA
5h 59m1 stop
 Logo
7:55 pm - 10:39 pmSEA-IDA
1h 44mnonstop
Fri, Sep 5 - Tue, Sep 30

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 $205 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 $205.

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

The average price for all round-trip flights from Idaho Falls to Washington depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.
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 15% 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 $514.

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 $314, 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 August, when the average cost of round-trip tickets is $373 and $373 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 Mondays 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 3 weeks before departure. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low season

January

High season

June

Cheapest flight

$107
Best time to beat the crowds with an average 0% drop in price.
Most popular time to fly and prices are also 13% 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.

See more FAQs

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 $54 one-way - $86 round-trip; Seattle $138 one-way - $283 round-trip

Top airlines flying 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 9906 reviews
7.1Entertainment
8.5Crew
7.1Food
7.9Comfort
8.2Boarding
Airline reviews

Flying sucks these days. No airline is better than another. Alaska Air At least gives you some pretzel snacks. That is about all I can say for it.

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

Flying sucks these days. No airline is better than another. Alaska Air At least gives you some pretzel snacks. That is about all I can say for it.

If all the airlines were ran so well. Staff very professional and kind.

Direct and non stop. We were late checking in but had paid for our luggage to be checked and they easily took the bags at the gate for us. We unfortunately had to take our bags through TSA and lost a few items...

The FTA in the JFK airport was so mismanaged. It needs improvement. Flight attendants should set age limits. In-flights snacks should provide two times instead one.

First time flying with any airline that has decent seating. Great experience crew was friendly and the pilot was as well.

Pretty disappointing as we did leave Seattle two hours late.

1.5 hour delay boarding plus 1+ hour sitting in plane waiting for ground crew to load luggage and freight, made for 3:00AM arrival in Seattle.

The second leg of my trip left without me despite being my inbound transfer only a few minutes late. My friends told the gate agent and they closed the doors and left early anyway. Then they tried to rebook me on a flight SIX hours later which only changed when I got a supervisor to make it 4 hours later. The gate agent was nasty, unhelpful, and walked away from me.

Worst part is being squashed in a seat ( I am not fat) and unable To get comfortable

Took forever to get on board. Flights was one hour late.

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Delayed take-off. Very small plane so very scary with lots of bumps during the flight. Would never fly Delta on short flights in small 80 seaters plane again! Felt relieved when landed.

The worst part was I was NOT allowed in the lounge even though I was holding a first class ticket and have a premium American Express card. I have flown Business or First Class with many airlines. Delta is the ONLY one who does not extend this courtesy to anyone except people who hold the very expensive American Express card. As a result, I won’t fly Delta if I have any other choice.

A little bumpy ride . No food was being provided due the the turbulence. That was ok it was a short flight to my standards.

Simply outstanding. Their new lounge for Delta One customers is a cut above the rest.

The Dekta Rep that checked us in was great. She's very personable, pleasant, and can tell she enjoys her job.

The plane was old with small storage areas that had problems closing/latching and not enough storage for everyone, and worn, damaged seats. Service was great but feel a little unsafe on such well used planes.

Terrible and im avoiding them in the future. My initial flight was delayed causing me to rebook my flight and when speaking with the representative to rebook I explained this is the second time my flights were delayed and they did nothing to help me. I wasn't booked to comfort plus or given a voucher or anything. I was almost late for my meeting that I needed to attend on Monday because of the games delta played delaying my flights even more and putting me in the very back of the plane next to an extremely intoxicated passenger

Flights on time. .Ride was as comfortable as can be expected in steerage. Luggage arrived at destination. Attendants were fairly friendly.

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

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

Information on your arrival and departure airports

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