IDA - SEA

$119 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 7/11. 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 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
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Flights Deals

Cheap Flights 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 for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Idaho Falls to Seattle

Fri, Sep 26 - Tue, Sep 30
 Logo
4:03 pm - 4:59 pmIDA-SEA
1h 56mnonstop
 Logo
12:37 pm - 3:23 pmSEA-IDA
1h 46mnonstop
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
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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
Tue, Jul 22 - Fri, Sep 12
United Airlines Logo
6:03 pm - 10:02 amIDA-SEA
16h 59m1 stop
United Airlines Logo
7:00 pm - 9:47 amSEA-IDA
13h 47m1 stop
$510United Airlines
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Wed, Aug 13 - Sun, Aug 17
United Airlines Logo
4:13 pm - 8:01 amIDA-SEA
16h 48m1 stop
United Airlines Logo
5:00 am - 10:51 pmSEA-IDA
16h 51m1 stop
$515United Airlines
Find Deal
Wed, Jul 9 - Thu, Jul 10
American Airlines Logo
6:51 am - 9:41 pmIDA-SEA
15h 50m2 stops
American Airlines Logo
6:27 am - 9:35 pmSEA-IDA
14h 08m2 stops
$658American Airlines
Find Deal
Useful Info

KAYAK's insights & trends for Idaho Falls to Seattle flights

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 round-trip flights from Idaho Falls to Seattle clicked on KAYAK for each day over the last 12 months.

Your flight ticket price will generally be cheaper if you fly to Seattle 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.

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 round-trip 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 $227 (return) on average. On the other hand, the most expensive months are January and July, where the average cost of round-trip tickets is $373 and $358 respectively.

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

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 Seattle, 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 Seattle, 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 seasonFebruary
High seasonJune
Cheapest flight$119
Best time to beat the crowds with an average 15% drop in price.
Most popular time to fly and prices are also 3% 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 $119 for a one-way ticket and $206 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, Delta, Hawaiian 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 $305 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 $286 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.

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 $160 or less one-way and $268 or less round-trip.

Prefer to fly direct from Idaho Falls to Seattle?

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

Direct departures

Idaho Falls Fanning Field to Seattle/Tacoma Intl

Monday

Alaska Airlines, Hawaiian Airlines, Qatar Airways

Alaska Airlines, Hawaiian Airlines, +1 more

Tuesday

Alaska Airlines, Hawaiian Airlines, Qatar Airways

Alaska Airlines, Hawaiian Airlines, +1 more

Wednesday

Alaska Airlines, Hawaiian Airlines, Qatar Airways

Alaska Airlines, Hawaiian Airlines, +1 more

Thursday

Alaska Airlines, Hawaiian Airlines, Qatar Airways

Alaska Airlines, Hawaiian Airlines, +1 more

Friday

Alaska Airlines, Hawaiian Airlines, Qatar Airways

Alaska Airlines, Hawaiian Airlines, +1 more

Saturday

Alaska Airlines, Hawaiian Airlines, Qatar Airways

Alaska Airlines, Hawaiian Airlines, +1 more

Sunday

Alaska Airlines, Hawaiian Airlines, Qatar Airways

Alaska Airlines, Hawaiian Airlines, +1 more

See more direct flights

Direct returns

Seattle/Tacoma Intl to Idaho Falls Fanning Field

Monday

Alaska Airlines, Finnair, Hawaiian Airlines, +1 more

Alaska Airlines, Finnair, +2 more

Tuesday

Alaska Airlines, Hawaiian Airlines, Qatar Airways

Alaska Airlines, Hawaiian Airlines, +1 more

Wednesday

Alaska Airlines, Finnair, Hawaiian Airlines, +1 more

Alaska Airlines, Finnair, +2 more

Thursday

Alaska Airlines, Finnair, Hawaiian Airlines, +1 more

Alaska Airlines, Finnair, +2 more

Friday

Alaska Airlines, Hawaiian Airlines, Qatar Airways

Alaska Airlines, Hawaiian Airlines, +1 more

Saturday

Alaska Airlines, Finnair, Hawaiian Airlines, +1 more

Alaska Airlines, Finnair, +2 more

Sunday

Alaska Airlines, Finnair, Hawaiian Airlines, +1 more

Alaska Airlines, Finnair, +2 more

See more direct flights
See more direct flights

Top 3 airlines serving 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 10000 reviews
7.1Entertainment
7.8Comfort
7.1Food
8.1Boarding
8.5Crew
Airline reviews

Flight was delayed 5 hours. Missed connecting flight. Very little apology or attempt to make anything better. Got a $150 credit for next flight. There won’t be another flight. First time on Alaska - last time. Keep your credit. Should have done something more

2.0 MediocreMary, Jun 2025ORD - SEA
Read more Alaska Airlines reviews

Flight was delayed 5 hours. Missed connecting flight. Very little apology or attempt to make anything better. Got a $150 credit for next flight. There won’t be another flight. First time on Alaska - last time. Keep your credit. Should have done something more

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.

Great overall. There was a bit of turbulence so they could only serve water because too much turbulence for the carts. Was glad they prioritized safety though

Excellent flight, the planes were newer, they did a nice job with boarding, great service overall.

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.

Very nice experience. The boarding however seemed somewhat mixed up, and we were delayed taking off.

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

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

Information on your arrival and departure airports

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