$69 Find Cheap Flights from Seattle to Idaho

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 departing on 11/4. 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

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

Best Idaho Flight Deals from Seattle

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boisenonstop$137
Idaho Falls
Idaho Fallsnonstop$207
Hailey
Haileynonstop$207
Lewiston
Lewistonnonstop$209
Twin Falls
Twin Falls1 stop$416
Pocatello
Pocatello1 stop$417
Spokane
Spokanenonstop$137
Boise
Boisenonstop$137
Idaho Falls
Idaho Fallsnonstop$207
Hailey
Haileynonstop$207
Lewiston
Lewistonnonstop$209
Twin Falls
Twin Falls1 stop$416
Pocatello
Pocatello1 stop$417
Spokane
Spokanenonstop$137

Cheap Flights from Seattle to Idaho

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

Tue, Aug 19 - Tue, Oct 21
Delta Logo
1:10 pm - 3:40 pmSEA-BOI
1h 30mnonstop
Delta Logo
8:40 am - 9:31 amBOI-SEA
1h 51mnonstop
$137Delta
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Wed, Oct 15 - Wed, Oct 15
Delta Logo
9:25 am - 10:34 amSEA-GEG
1h 09mnonstop
Delta Logo
5:35 pm - 7:00 pmGEG-SEA
1h 25mnonstop
$137Delta
Find Deal
Wed, Aug 20 - Wed, Oct 22
Hawaiian Airlines Logo
11:30 am - 6:37 pmSEA-BOI
6h 07m1 stop
Hawaiian Airlines Logo
6:59 pm - 10:04 pmBOI-SEA
4h 05m1 stop
$156Hawaiian Airlines
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Wed, Sep 10 - Wed, Sep 10
Alaska Airlines Logo
8:03 am - 10:35 amSEA-BOI
1h 32mnonstop
Alaska Airlines Logo
2:19 pm - 6:58 pmBOI-SEA
5h 39m1 stop
$161Alaska Airlines
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Tue, Aug 5 - Tue, Aug 12
Hawaiian Airlines Logo
12:31 pm - 3:04 pmSEA-BOI
1h 33mnonstop
Hawaiian Airlines Logo
9:53 am - 10:26 amBOI-SEA
1h 33mnonstop
$164Hawaiian Airlines
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Wed, Aug 13 - Sat, Aug 16
Alaska Airlines Logo
11:20 am - 6:32 pmSEA-BOI
6h 12m1 stop
Alaska Airlines Logo
6:51 pm - 10:00 pmBOI-SEA
4h 09m1 stop
$166Alaska Airlines
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Wed, Aug 20 - Wed, Oct 22
Southwest Logo
5:25 pm - 11:20 pmSEA-BOI
4h 55m1 stop
Southwest Logo
6:20 am - 4:05 pmBOI-SEA
10h 45m2 stops
$168Southwest
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Wed, Jul 16 - Wed, Aug 13
Southwest Logo
1:30 pm - 10:55 pmSEA-BOI
8h 25m1 stop
Southwest Logo
5:25 pm - 9:15 pmBOI-SEA
4h 50m1 stop
$212Southwest
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Thu, Aug 7 - Mon, Aug 11
 Logo
5:30 pm - 11:44 amSEA-IDA
17h 14m1 stop
 Logo
6:12 pm - 4:25 pmIDA-SEA
23h 13m1 stop
Thu, Jul 10 - Sun, Jul 13
 Logo
5:30 pm - 5:02 pmSEA-GEG
23h 32m2 stops
 Logo
8:48 pm - 10:00 pmGEG-SEA
1h 12mnonstop
Useful Info

KAYAK's insights & trends for Seattle to Idaho flights

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

What is the cheapest Seattle to Idaho flight route?

The cheapest price for flight routes found by users searching on KAYAK in the last 2 weeks for round-trip flights from Seattle to Idaho.

The cheapest ticket to Idaho from Seattle found in the last 72 hours was to Boise, at $147 round-trip. The most popular route is from Seattle (SEA) to Boise (BOI), and the cheapest round-trip airline ticket found on this route in the last 72 hours was $147.

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

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 $386, prices are generally cheapest when you fly direct.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Idaho, 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 is January, when tickets cost $186 (return) on average. On the other hand, the most expensive months are December and November, when the average cost of round-trip tickets is $277 and $267 respectively.

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

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

If your flying dates are flexible, you should consider flying to Idaho on a Thursday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Seattle to Idaho. For your return ticket, we recommend flying on a Thursday and avoiding Sundays for the best deals.

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

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, 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, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 23 weeks before departure.


Good to know

Low seasonApril
High seasonDecember
Cheapest flight$69
Best time to beat the crowds with an average 7% drop in price.
Most popular time to fly with an average 7% increase in price.
Flight from Seattle to Boise

FAQs - booking Idaho flights

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

    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.

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

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

    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 Seattle to Idaho 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 Seattle to Idaho?

    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 Seattle to Idaho 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 Idaho?

    The cheapest time of day to fly to Idaho is generally at night, when round-trip flights cost $208 on average. Morning departures are around 5% more expensive than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $261.

Top 3 airlines serving from Seattle to Idaho

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

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

10.0 ExcellentHelen, Jun 2025SEA - MCI
Read more Alaska Airlines reviews

We had to take the train to our next gate but had time to eat a meal. When to our next gate and asked employee about gate and got informed that gate had been changed so back on train to next gate. So thankful she was there and informed us of gate change. Because of the issue the boarding was slow but employees were there and busy helping all and keeping it organized.

Very pleasant and the flight felt like it went by quick

All flight entertainment is from your own device and there was an $8 charge to connect. also 1 drink and a small bag of pretzels was all that was given to us. other that that the seats were good and the flight itself was as expected.

It is very bad they do not give you money back

They lost our bag and it took them days to find it. Terrible communication and lots of lies about where it was. Their system hasn’t merged with Hawaiian yet they route people on shared flights with Hawaiian, creating an administrative nightmare.

Major flight delays, it was a 1.5-hour delay. The gate kept changing about 3 times in Seattle. very hectic and chaotic.

More leg room in back seats. Can you require people to smell good on planes? ha ha Staff was great! Plane was comfortable. I enjoyed the movies and TV. Smooth take off and landing.

The only problem was the time delay. Kudos to the counter agent in Seattle. Very helpful and gracious.

This flight was how a flight should be. The flight from Hawaii to Seattle was terrible

Quick and easy check-in. Love how technology has helped speed up the flying process. Smooth flight to a Seattle and back. 10/10

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.

Flight was delayed long enough that I was misding my connecting flight. The agents could not get me on a comparable flight, nor could they get me s Main Cabin seat I had paid for, nor could they get me on a comparable connecting flight. The gate agent would not issue meal vouchers, even though I was delayed over six hours! I had to spend over an hour and 15 minutes with customer service on the phone to See if they could get me on a better flight and get a meal voucher. Customer service was not helpful enough in trying to find alternate flights and it Ended up taking me 24 hours for a 12 hour trip!! Delta does not provide upgrades NOR will they even give you a pass for a few hours to their lounge. They claim that they do not issue daily passes to their lounge anymore. I call BS since this would be no extra cost to them to provide excellent customer service and give you a few hours to relax in comfort when you’re sitting in a crowded airport and your flight has been screwed up for that many hours.

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.

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 Seattle to Idaho

Information on your arrival and departure airports

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