SEA - IDA

$119 Find Cheap Flights from Seattle to Idaho Falls

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Idaho Falls departing on 11/8. 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 Idaho Falls

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

Cheap Flights from Seattle to Idaho Falls (SEA-IDA)

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

Tue, Oct 14 - Tue, Oct 21
Alaska Airlines Logo
7:55 pm - 10:38 pmSEA-IDA
1h 43mnonstop
Alaska Airlines Logo
4:15 pm - 5:12 pmIDA-SEA
1h 57mnonstop
$181Alaska Airlines
Find Deal
Tue, Oct 14 - Tue, Oct 21
Alaska Airlines Logo
7:55 pm - 10:38 pmSEA-IDA
1h 43mnonstop
Alaska Airlines Logo
4:15 pm - 5:12 pmIDA-SEA
1h 57mnonstop
$197Alaska Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 2
Hawaiian Airlines Logo
9:15 pm - 11:59 pmSEA-IDA
1h 44mnonstop
Hawaiian Airlines Logo
5:05 am - 6:14 amIDA-SEA
2h 09mnonstop
$227Hawaiian Airlines
Find Deal
Sat, Oct 25 - Tue, Oct 28
Delta Logo
5:25 am - 12:33 pmSEA-IDA
6h 08m1 stop
Delta Logo
6:53 pm - 10:22 pmIDA-SEA
4h 29m1 stop
$237Delta
Find Deal
Fri, Dec 5 - Sun, Dec 7
Alaska Airlines Logo
1:36 pm - 4:27 pmSEA-IDA
1h 51mnonstop
Alaska Airlines Logo
5:04 pm - 6:13 pmIDA-SEA
2h 09mnonstop
$241Alaska Airlines
Find Deal
Sat, Dec 20 - Tue, Dec 23
Hawaiian Airlines Logo
9:21 pm - 12:07 amSEA-IDA
1h 46mnonstop
Hawaiian Airlines Logo
6:00 am - 7:20 amIDA-SEA
2h 20mnonstop
$258Hawaiian Airlines
Find Deal
Sat, Dec 6 - Sun, Dec 7
Delta Logo
1:30 pm - 6:26 pmSEA-IDA
3h 56m1 stop
Delta Logo
7:06 pm - 12:20 amIDA-SEA
6h 14m1 stop
$297Delta
Find Deal
Wed, Oct 29 - Sun, Nov 2
Multiple Airlines Logo
12:58 pm - 9:23 pmSEA-IDA
31h 25m2 stops
Multiple Airlines Logo
9:13 pm - 8:18 amIDA-SEA
12h 05m1 stop
$397Multiple Airlines
Find Deal
Wed, Oct 29 - Sun, Nov 2
United Airlines Logo
7:13 pm - 9:48 amSEA-IDA
13h 35m1 stop
United Airlines Logo
4:15 pm - 10:35 amIDA-SEA
19h 20m1 stop
$493United Airlines
Find Deal
Fri, Oct 17 - Mon, Oct 20
United Airlines Logo
3:28 pm - 8:52 pmSEA-IDA
28h 24m2 stops
United Airlines Logo
5:56 pm - 3:32 pmIDA-SEA
22h 36m1 stop
$500United Airlines
Find Deal

Everything you should know

Top airlines
Alaska Airlines
Cheapest • from $181 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
When to book
4 weeks
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 62% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
April
Cheapest • 25% price drop
June
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Cheapest round-trip
$181
Overall average: $268
Alaska Airlines
Tue 10/14Tue 10/21
SEA - IDA • Non-stop
Cheapest one-way
$119
Typical prices: $184-269
Hawaiian Airlines
Sat 11/8
SEA - IDA • Non-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Idaho Falls!
Booking Insights

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

Get data-powered insights and trends into flights from Seattle to Idaho Falls 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 Seattle to Idaho Falls?

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

When flying from Seattle to Idaho Falls, you should consider leaving on a Tuesday and avoid Sundays if you are looking for the best rates. For your return to Seattle, you’ll find the best rates on Saturdays and the most expensive ones on Tuesdays.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Idaho Falls, 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 Seattle to Idaho Falls is April, where tickets cost $238 (return) on average. On the other hand, the most expensive months are March and June, where the average cost of round-trip tickets is $448 and $427 respectively.

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

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 $298 on average.

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

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Idaho Falls, 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 Seattle to Idaho Falls, you should book around 4 weeks before departure, which saves you about 62% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.

Good to know

Low seasonMarch
Cheapest flight$119
Best time to beat the crowds but there is an average 40% increase in price.
Most popular time to fly with an average 34% increase in price.
Flight from Seattle to Idaho Falls

When to book flights from Seattle to Idaho Falls

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

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

    In the last 3 days, the lowest price for a flight from Seattle to Idaho Falls was $119 for a one-way ticket and $181 for a round-trip.

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

    No

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

    Only Alaska Airlines offers inflight Wi-Fi service on the Seattle to Idaho Falls flight route.

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

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

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

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

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

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Idaho Falls are Alaska Airlines and Delta. With an average price for the route of $328 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 $567 and an overall rating of 7.9.

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

    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 Seattle to Idaho Falls.

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

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

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

    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 Idaho Falls from Seattle 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 Seattle to Idaho Falls

  • Looking for a cheap flight? 25% of our users found flights on this route for $143 or less one-way and $403 or less round-trip.

Prefer to fly direct from Seattle to Idaho Falls?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to Idaho Falls Fanning Field.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Idaho Falls Fanning Field Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Idaho Falls Fanning Field

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Direct returns

Idaho Falls Fanning Field to Seattle/Tacoma Intl

Monday

Alaska Airlines

Alaska Airlines

Tuesday

Alaska Airlines

Alaska Airlines

Wednesday

Alaska Airlines

Alaska Airlines

Thursday

Alaska Airlines

Alaska Airlines

Friday

Alaska Airlines

Alaska Airlines

Saturday

Alaska Airlines

Alaska Airlines

Sunday

Alaska Airlines

Alaska Airlines

See more direct flights

Reviews of the top 3 airlines serving from Seattle to Idaho Falls

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Idaho Falls. 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 Seattle to Idaho Falls? 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
8.1Boarding
8.5Crew
7.0Entertainment
7.1Food
7.8Comfort
Airline reviews

All flights were on time. No crowded and had empty seats. All flight attendents were great.

10.0 ExcellentAnonymous, Sep 2025SEA - SAN
Read more Alaska Airlines reviews

All flights were on time. No crowded and had empty seats. All flight attendents were great.

Flight was delayed as it always is with Alaska airlines. Particularly to smaller airports. No AC on the plane so it was miserably hot.

Slow boarding and the flight crew hit me with the food cart

It was very nice flight going to Seattle and coming back to Omaha. Even got in early. Very easy to check in using the Alaska Airlines App. Thank you.

They offer the only direct flight from Seattle to Pittsburgh.

Seattle airport is a mess. New bag tag system has potential, but you need more signage to guide passengers through the process as to where to go next. Told to go in one direction and then met with a very rude agent when we did. He blamed his attitude on all the folks flying over labor day that were paying his salary. Gate area for D3 is a mess compared to the North terminal. Overall Alaska is number 1 in my book.

After we boarded there was quite a long time before we actually took off, and there were no announcements from crew about why we were delayed. Later when they did make announcements they were largely inaudible. There was no food (other than for purchase) on the flight and no entertainment. Thats not a complaint, just explaining my ratings in those categories. The flight was smooth. Baggage claim was rapid.

The airline staff was great! The best safety review ive ever had!

Agent boarding us in San Diego lectured me on showing up on time for the flight, and said that if I had been three minutes later, he would have denied myself and my wife boarding. Our trusted traveler numbers were not in the system, even though I entered them when I bought the tickets. Our food orders were not in the system, even though I entered them prior to the flight. My wife requires a wheelchair, and that was delayed on both flights.

Why was I charged for a glass of wine on one flight and not on another? Why no movie or TVs? It was a long flight.

Perfect flight both ways. On time, courteous staff, plane comfortable and cool. Best domestic flights I’ve had in awhile.

Really low quality food especially for an international flight. The crew also was surprisingly unpleasant except couple of ladies. I know we were not in first class but that’s no reason to treat customers as less.

Flight delayed for two and half hours and then canceled altogether due to mechanical issues. No mechanic onsite to fix so had to send one from LAX.

Crew was good. The reservation got mixed up and they didn't have my TSA number. I am also a Silver Medallion and wasn't able to use Sky Priority.

Delta made it easy, comfortable and timely. The crew was fantastic.

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..,

First class ticket. They ran out of food and I sat hungry watching the others eat

They we able to seat my companion and I next to each other. Plane’s temperature was very cool. Willl be more prepared on return trip.

All was good and they were able to seat my travel companion next to me. Thank you.

Like the ample leg room. May as well not bother with snacks if it's only a two ounce bag of pretzels. Didn't use the entertainment option. Was there one?

What an amazing flight. I haven’t experienced this level of service in a flight in years. This will be the only way to fly to Hawaii for me in the future.

Kayak sold me a ticket after check in time. Could not check in. Could not get on flight.

Love you guys are so friendly and kind and wonderful

Agents talk too fast over intercom. I know it’s memorized and we’ve all heard it before. Just slow down a little. Stop charging for checked bags. I was pleased to get my bags promptly at each end of my flight.

Everything was great except having to check in at Alaska. That was a surprise and took extra time and effort. Should have been explained somewhere maybe on the HA electronic ticket.

It was clean and the crew was great. I wish the chairs could recline just a little more and you would provide small pillows for people with bad backs. My back is fused and a little support would be great.

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

Information on your arrival and departure airports

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