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IDA - SEA

$109 Find cheap flights from Idaho Falls to Seattle

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 Seattle departing on 9/2. 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
0 bags
Sat 6/15
Sat 6/22

Search hundreds of travel sites at once for deals on flights to Seattle

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Idaho Falls to Seattle, 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 Seattle, as well as popular online travel agencies
In the last 7 days travelers have searched 42,211,976 times on KAYAK, and here is why:

Save 21% or moreCompare multiple travel sites with one search.

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Filter your dealsChoose cabin class, free Wi-Fi and more.

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Cheap flight deals from Idaho Falls to Seattle (IDA-SEA)

Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Idaho Falls to Seattle 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 and deals for you by selecting your travel dates.
Choose your dates
6:00 am - 6:52 amIDA-SEA
1h 52mnonstop
9:15 pm - 11:57 pmSEA-IDA
1h 42mnonstop
$237Alaska Airlines
Find Deal
Sun, Jun 16 - Sat, Jun 22
7:00 pm - 11:59 pmIDA-SEA
5h 59m1 stop
5:10 pm - 10:18 pmSEA-IDA
4h 08m1 stop
$246Delta
Find Deal
Tue, Jun 18 - Tue, Jul 2
7:00 pm - 11:59 pmIDA-SEA
5h 59m1 stop
5:40 am - 12:20 pmSEA-IDA
5h 40m1 stop
$276Delta
Find Deal
Fri, Oct 25 - Mon, Oct 28
6:00 am - 6:52 amIDA-SEA
1h 52mnonstop
9:15 pm - 11:57 pmSEA-IDA
1h 42mnonstop
$307Alaska Airlines
Find Deal
Thu, Jun 20 - Sun, Jun 23
4:20 pm - 5:10 pmIDA-SEA
1h 50mnonstop
12:44 pm - 3:30 pmSEA-IDA
1h 46mnonstop
$317Alaska Airlines
Find Deal
Fri, Aug 30 - Sun, Sep 1
6:00 am - 6:52 amIDA-SEA
1h 52mnonstop
9:15 pm - 11:57 pmSEA-IDA
1h 42mnonstop
$322Alaska Airlines
Find Deal
Fri, Jul 12 - Mon, Jul 15
10:45 am - 12:46 amIDA-SEA
15h 01m2 stops
5:05 am - 9:40 amSEA-IDA
27h 35m1 stop
$520United Airlines
Find Deal
Tue, Jun 11 - Tue, Jun 18
5:56 pm - 10:15 pmIDA-SEA
29h 19m3 stops
5:05 am - 5:17 pmSEA-IDA
11h 12m1 stop
$560United Airlines
Find Deal
Tue, Jun 18 - Tue, Jul 2
6:30 am - 9:35 pmIDA-SEA
16h 05m2 stops
8:30 am - 9:39 pmSEA-IDA
12h 09m2 stops
$1,093American Airlines
Find Deal
Sun, Jul 14 - Sun, Jul 21
6:32 am - 9:46 pmIDA-SEA
16h 14m2 stops
1:14 am - 9:43 pmSEA-IDA
19h 29m1 stop
$1,264American Airlines
Find Deal
Tue, Jun 11 - Mon, Jun 17

Flights from Idaho Falls to Seattle - Travel Insights & Trends

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

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

The average price of all flights from Idaho Falls to Seattle clicked on KAYAK for each day over the last 12 months.
If you are looking for a flight deal from Idaho Falls to Seattle, look for departures on Tuesdays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from Seattle, Wednesday is the cheapest day to fly and Sunday is the most expensive.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for flights from Idaho Falls to Seattle, 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 Seattle is April, where tickets cost $262 on average. On the other hand, the most expensive months are September and August, where the average cost of tickets is $568 and $553 respectively.

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

To calculate daily average prices, KAYAK takes all prices for each day before departure over the last year for flights from Idaho Falls to Seattle, removes the top 0.1% to account for outliers, and then takes the average of all the values for each month.
To get a below average price on the flight from Idaho Falls to Seattle, you should book around 2 weeks before departure. For the absolute cheapest price, our data suggests you should book 60 days before departure.

Which airlines provide the cheapest flights from Idaho Falls to Seattle?

The cheapest price for the route for each airline clicked by KAYAK users in the last 72 hours.
In the last 3 days, Alaska Airlines offered the best one-way deal for that route, at $109. KAYAK users also found Idaho Falls to Seattle round-trip flights on Alaska Airlines from $237 and on Delta from $246.

Which airlines fly non-stop between Idaho Falls and Seattle?

Airline and price data is aggregated from results in KAYAK’s search results from the last 2 weeks for flights from Idaho Falls to Seattle.
There is just one airline that flies from Idaho Falls to Seattle direct and that is Alaska Airlines. The best one-way deal found from Alaska Airlines for the route is $129.

How many flights are there between Idaho Falls and Seattle per day?

Each day, there are 3 nonstop flights that take off from Idaho Falls and land in Seattle, with an average flight time of 1h 52m. The most common departure time is 6:00 am and most flights take off in the morning. Each week, there are 21 flights and there are the same amount of flights each day 3.

Which cabin class options are there for flights between Idaho Falls and Seattle?

The average price of flights for each cabin class for the route found by users searching on KAYAK over the last 2 weeks.
There are 3 cabin class options for the route. These are Business, Economy and Prem Economy. Perform a search on KAYAK to find the latest prices and availability for all cabin fares, which differ across airlines.

How long does a flight from Idaho Falls to Seattle take?

Nonstop flights from Idaho Falls generally make it to Seattle in 1h 49m. The flying distance between the two cities is 565 miles.

What’s the earliest departure time from Idaho Falls to Seattle?

Early birds can take the earliest flight from Idaho Falls at 6:00 am and will be landing in Seattle at 6:52 am.

What’s the latest departure time from Idaho Falls to Seattle?

If you prefer to fly at night, the latest flight from Idaho Falls to Seattle jets off at 4:02 pm and lands at 4:58 pm.

Good to know

Low season

February

High season

March

Cheapest flight

$109
Best time to beat the crowds with an average 1% drop in price.
Most popular time to fly and prices are also 13% lower on average.
Flight from Idaho Falls to Seattle

When to book flights from Idaho Falls to Seattle

Are your dates flexible? Find out the best times to travel from Idaho Falls to Seattle 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 Idaho Falls to Seattle

  • What is the cheapest flight from Idaho Falls to Seattle?

    In the last 3 days, the lowest price for a flight from Idaho Falls to Seattle was $109 for a one-way ticket and $237 for a round-trip.

  • Do I need a passport to fly between Idaho Falls and Seattle?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Idaho Falls to Seattle?

    When flying out of Idaho Falls you will be using Idaho Falls Fanning Field. You will be landing at Seattle, also known as Seattle/Tacoma Intl.

  • Which airlines offer Wi-Fi service onboard planes from Idaho Falls to Seattle?

    Alaska Airlines, and American Airlines offer inflight Wi-Fi service on the Idaho Falls to Seattle flight route.

  • Which aircraft models fly most regularly from Idaho Falls to Seattle?

    The Embraer 175 is the aircraft model that flies most regularly on the Idaho Falls to Seattle flight route.

  • Which airline alliances offer flights from Idaho Falls to Seattle?

    oneworld is the only airline alliance operating flights between Idaho Falls and Seattle.

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

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

  • Which is the best airline for flights from Idaho Falls to Seattle, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Idaho Falls to Seattle are Alaska Airlines and Delta. With an average price for the route of $322 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 $492 and an overall rating of 8.0.

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

    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 Seattle.

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

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

    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 Seattle with an airline and back to Idaho Falls with another airline. Booking your flights between Idaho Falls and SEA 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 Idaho Falls to Seattle?

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

See more FAQs

KAYAK’s top tips for finding a cheap flight from Idaho Falls to Seattle

  • Looking for a cheap flight? 25% of our users found flights on this route for $145 or less one-way and $342 or less round-trip.

Prefer to fly non-stop from Idaho Falls to Seattle?

Find which airlines fly direct from Fanning Field to Seattle/Tacoma Intl, which days they fly and book direct flights.

Nonstop departures

Idaho Falls Fanning Field to Seattle/Tacoma Intl

Monday

Alaska Airlines, Qatar Airways

Alaska Airlines, Qatar Airways

Tuesday

Alaska Airlines, Finnair, Qatar Airways

Alaska Airlines, Finnair, +1 more

Wednesday

Alaska Airlines, Qatar Airways

Alaska Airlines, Qatar Airways

Thursday

Alaska Airlines, Finnair, Qatar Airways

Alaska Airlines, Finnair, +1 more

Friday

Alaska Airlines, Qatar Airways

Alaska Airlines, Qatar Airways

Saturday

Alaska Airlines, Finnair, Qatar Airways

Alaska Airlines, Finnair, +1 more

Sunday

Alaska Airlines, Qatar Airways

Alaska Airlines, Qatar Airways

See more direct flights

Nonstop returns

Seattle/Tacoma Intl to Idaho Falls Fanning Field

Monday

Alaska Airlines, Qatar Airways

Alaska Airlines, Qatar Airways

Tuesday

Alaska Airlines, Finnair, Qatar Airways

Alaska Airlines, Finnair, +1 more

Wednesday

Alaska Airlines, Qatar Airways

Alaska Airlines, Qatar Airways

Thursday

Alaska Airlines, Finnair, Qatar Airways

Alaska Airlines, Finnair, +1 more

Friday

Alaska Airlines, Qatar Airways

Alaska Airlines, Qatar Airways

Saturday

Alaska Airlines, Finnair, Qatar Airways

Alaska Airlines, Finnair, +1 more

Sunday

Alaska Airlines, Qatar Airways

Alaska Airlines, Qatar Airways

See more direct flights
See more direct flights

Top airlines flying from Idaho Falls to Seattle

 
See real verified KAYAK customer reviews for airlines flying from Idaho Falls to Seattle. 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 Seattle? 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 9157 reviews
7.3Entertainment
8.2Boarding
7.9Comfort
7.3Food
8.6Crew
Airline reviews

I have never flown Alaska Airlines before & would recommend them to anyone& will use again

10.0 ExcellentAnonymous, May 2024BNA - SEA
Read more about Alaska Airlines reviews

I have never flown Alaska Airlines before & would recommend them to anyone& will use again

Not a good experience, we were delayed by an hour due to maintenance issues.

After upgrading and paying for seat I was bumped from my seat. When I went to ask why she said I wasn’t assigned a seat because the ticket I purchased. After kindly explaining to her I upgraded the night before and paid for that seat she said how I was wrong and that something must have happened. I showed her my receipt and she still said there was an error. This is why I only fly delta. The flight attendant was rude as well but I don’t want to waste anymore time talking about how poor Alaska is. Delta here I come!

Ashley - the flight attendant from OMA to SEA - was phenomenal. I was traveling alone with my 4 month old and she made every accommodation possible and went out of her way to make sure my experience was as comfortable as possible. Give this woman a massive raise!

boarding was easy and the 737 Max was comfortable and roomy but that was the only good.. there was a child screaming at the top of his lungs for the entire loading, taxiing and part of the flight and no one in the crew said anything or offered any assistance.

The flight was great. The pilot was great. It was really annoying that the staff had facemasks on. Hard to hear what they’re saying when a mask is covering their mouth. I enjoyed the flight, but there was a crying baby in front of me. You guys should offer flights baby free. I would be very into that me and the person next to me discussed how they should make free flights for all of us that don’t have kids. I wouldn’t mind paying extra to not have to deal with the smell of a dirty diaper or screaming of a child. Also, if they had a separate room, the babies could be sent to the back with a curtain or something muddle the horrible sounds.

Smooth. Courteous. Fun. One problem: the wheels on my checked roller back were broken when I picked up baggage at destination. Must have happened during flight baggage handling but I don’t know where.

Staff very helpful and friendly, in flight entertainment poor. Flight left late and thus arrived 20 minutes late to final destination.

First time flying with Alaska and the staff were All professional from checkin to departure! I do plan to book more flights with Alaska. Thanks

Boarded the plain and had to wait 1 hour for crew Captain to arrive from another flight

Delta is one of the best airlines I have flown

It was a Red-Eye flight so was not comfortable enough to sleep, but seat was as expected. Crew was great and in-flight entertainment was excellent. Flight was smooth

Standard economy seats on Deltas 767 were better than Alaska premium seats on their 737 MAX9; more legroom, wider seats. Entertainment was great, no ipad or phone required. Could have included a meal service.

Plane was turned around due to fog half way into the flight, Delta did not properly direct passengers to stay on same flight and instead failed to properly rebook on Alaska

The boarding process was terrible especially with an indirect flight Chicago to Seattle to San Diego was terrible talking about we overbooked a flight idk if I’d take this airline ever again we got off our flight from Chicago to Seattle and we traveled for business and they told us our connecting flight was over booked and their was no seats asking people to take a delayed next flight and they don’t tell anyone coughing to wear masks seats 30A-B were terrible during the flight no one wants to sit next to people coughing all around I don’t want to be sick traveling for work or get sick anytime it’s very upsetting the staff doesn’t take this stuff serious to tell them to wear masks when they see people coughing and sneezing

Flight was on time, the crew was personable & professional, & the plane arrived early which was nice.

This flight landed early, but deplaned late. We were stuck sitting and waiting for a gate for over an hour

My flight was very clean and the location was comfortable. The service was great. A satisfying flight!

I appreciated being upgraded. I was very disappointed with my 13 hr layover in Seattle to geg, while my friends who flew Alaska made it home as scheduled. I had to reserve a hotel on my dime.

Delta needs to step up the meals and snacks. They have been serving the same two meals for three years.... It is time to change it up.

Book cheap flights from Idaho Falls to Seattle

Recent one-way flight deals

 
Only flying one-way? Below are some of the best one-way flight deals from Idaho Falls to Seattle found on KAYAK in the last 72 hours.
9/2Mon
nonstopAlaska Airlines
1h 54mIDA-SEA
$109
9/2Mon
1 stopDelta
5h 57mIDA-SEA
$118
7/16Tue
1 stopDelta
6h 02mIDA-SEA
$148
7/12Fri
1 stopDelta
5h 58mIDA-SEA
$168
7/13Sat
nonstopAlaska Airlines
1h 52mIDA-SEA
$184
7/15Mon
1 stopDelta
5h 58mIDA-SEA
$188
7/16Tue
nonstopAlaska Airlines
1h 52mIDA-SEA
$214
9/2Mon
2 stopsUnited Airlines
29h 41mIDA-SEA
$273
7/13Sat
2 stopsUnited Airlines
16h 07mIDA-SEA
$343
7/13Sat
3 stopsUnited Airlines
16h 30mIDA-SEA
$878

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Idaho Falls - Seattle Flights

Departure:

Idaho Falls (undefined)United States

Destination:

Seattle (SEA)United States

Return flight deals:

Seattle - Idaho Falls

Cabin classes:

$5,131
$2,988
$257