$61 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 6/4. 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.
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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$127
Idaho Falls
Idaho Fallsnonstop$197
Hailey
Haileynonstop$174
Lewiston
Lewistonnonstop$189
Twin Falls
Twin Falls1 stop$416
Pocatello
Pocatello1 stop$427
Spokane
Spokanenonstop$128
Boise
Boisenonstop$127
Idaho Falls
Idaho Fallsnonstop$197
Hailey
Haileynonstop$174
Lewiston
Lewistonnonstop$189
Twin Falls
Twin Falls1 stop$416
Pocatello
Pocatello1 stop$427
Spokane
Spokanenonstop$128

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.

Recent round-trip flight deals from Seattle to Idaho

Recommended round-trip deals departing in the coming months from the most popular airlines that fly from Seattle to Idaho.
Discover the best prices for you by selecting your travel dates on KAYAK.
Hawaiian Airlines Logo
1:37 pm - 3:55 pmSEA-BOI
1h 18mnonstop
Hawaiian Airlines Logo
7:06 pm - 7:44 pmBOI-SEA
1h 38mnonstop
$127Hawaiian Airlines
Find Deal
Sat, Jun 7 - Sat, Jun 7
Alaska Airlines Logo
10:49 pm - 11:54 pmSEA-GEG
1h 05mnonstop
Alaska Airlines Logo
6:00 am - 7:15 amGEG-SEA
1h 15mnonstop
$128Alaska Airlines
Find Deal
Tue, Jun 10 - Tue, Jun 17
Hawaiian Airlines Logo
1:14 pm - 2:22 pmSEA-GEG
1h 08mnonstop
Hawaiian Airlines Logo
6:00 am - 7:11 amGEG-SEA
1h 11mnonstop
$130Hawaiian Airlines
Find Deal
Thu, May 22 - Sun, May 25
Alaska Airlines Logo
11:34 am - 12:45 pmSEA-GEG
1h 11mnonstop
Alaska Airlines Logo
4:16 pm - 5:25 pmGEG-SEA
1h 09mnonstop
$135Alaska Airlines
Find Deal
Thu, May 22 - Sun, May 25
Delta Logo
4:40 pm - 7:09 pmSEA-BOI
1h 29mnonstop
Delta Logo
4:59 pm - 5:35 pmBOI-SEA
1h 36mnonstop
$137Delta
Find Deal
Tue, May 27 - Tue, Jun 3
Delta Logo
3:45 pm - 5:00 pmSEA-GEG
1h 15mnonstop
Delta Logo
3:30 pm - 4:49 pmGEG-SEA
1h 19mnonstop
$137Delta
Find Deal
Fri, May 23 - Mon, May 26
Southwest Logo
5:45 am - 11:45 amSEA-BOI
5h 00m1 stop
Southwest Logo
3:00 pm - 10:30 pmBOI-SEA
8h 30m1 stop
$162Southwest
Find Deal
Tue, May 27 - Tue, Jun 3
Southwest Logo
9:55 am - 4:00 pmSEA-BOI
5h 05m1 stop
Southwest Logo
5:40 pm - 12:45 amBOI-SEA
8h 05m1 stop
$167Southwest
Find Deal
Sat, Jun 7 - Sun, Jun 8
United Airlines Logo
9:45 am - 4:41 pmSEA-BOI
5h 56m1 stop
United Airlines Logo
7:07 pm - 12:59 amBOI-SEA
6h 52m1 stop
$177United Airlines
Find Deal
Thu, May 29 - Thu, Jun 5
United Airlines Logo
9:45 am - 4:41 pmSEA-BOI
5h 56m1 stop
United Airlines Logo
7:07 pm - 12:59 amBOI-SEA
6h 52m1 stop
$257United Airlines
Find Deal
Fri, Jun 13 - Fri, Jun 20
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 $136 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 $136.

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 $315, 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 $182 (return) on average. On the other hand, the most expensive months are November and December, when the average cost of round-trip tickets is $271 and $271 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 Saturday, 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 Friday and avoiding Saturdays 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 seasonSeptember
High seasonDecember
Cheapest flight$61
Best time to beat the crowds with an average 11% drop in price.
Most popular time to fly with an average 4% increase in price.
Flight from Seattle to Spokane

Flights from Seattle to Idaho: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Seattle to Idaho 
AlionaFlew with Alaska AirlinesSEA-BOIMay 2024
I don’t know is it exist on Boise airport, but Lufthansa and United are good and even for a huge distances like to travel between continents, they fly smoothly. Alaskan hurry up to come faster, but faster it can not be safer, you can experience all the shaking and suddenly blood pressure from going suddenly fast to high altitude and who have a heart problem or pregnancy put himself under a big risk flying with Alaskan airlines.
Verified travelerFlew with Alaska AirlinesSEA-BOIFeb 2024
Keep an eye on boarding time. At SEATAC, if you are not sitting at your exact gate, you cannot hear boarding announcements.

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 $228 on average. On average, there is no price difference when choosing to fly in the morning or the evening on this flight route. 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 $266.

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 9968 reviews
7.1Entertainment
8.5Crew
8.2Boarding
7.9Comfort
7.1Food
Airline reviews

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

2.0 MediocreAnonymous, Apr 2025SEA - BOI
Read more Alaska Airlines reviews

I made a mistake. Read what I wrote in the flight from Dulles to SEA. The negative experience was from SEA to BOI. Total garbage. Wont do it again.

Need to get on train for second flight it’s much nicer when all the gates are together for obvious reasons

Cramped, crowded aircraft. Poorly organized boarding. Tasteless crackers to eat. 40 minutes late. A standard US air travel experience.

Would not mind having movie options an available like Delta, but is not necessary. Did not have food, so cannot appropriately rate that section.

Three hour flight so snacks and basic drinks unless you pre buy as usual. Didn’t do my emtertainment as was tired after 23 hours of travel. You have to use your own device on US flights if travelers aren’t aware so if you only use your cell phone that can be small. Crew are great.

Awful. We got the last seats and they don't recline. We've been on this horrible journey since 6am and won't get to our destination almost a full day later. Oh and no food, either. Never again.

An uneventful flight is a good experience although one of the pilots gauges wasn’t working right so we had a half hour delay—no one can foresee that.

Plane was delayed and got me in past bedtime. But more importantly, my tsa precheck number wasn’t on my ticket so had to deal with the general line. Oh well, guess the delay helped that situation.

It was as good as flying can be, which is still very uncomfortable. Clean new aircraft, great crew.

Everything was good. The flight attendants were great. I was disappointed that there wasn’t any screens on the back of the seats to watch movies, tv, etc. I only had my phone to watch movies on.

Delta is my preferred airline. I've traveled with them for years. On time in most cases, good communication, easy to use app. Most planes are pretty nice. I was on a CRJ 700/900 however, which was pretty badly aged inside and needed a refresh. No infotainment, unreliable wifi, best to download before boarding or bring a book. Food choices are really just snacks on this flight, nice variety but about what you'd expect. Great staff and prompt in departure and early arrival too. Overall quite satisfied.

Crew was friendly Love the entertainment in the seat head rest.

Delta flight was on time, seats were comfortable, and crew was nice.

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.

The departure gate was changed from C1 to B18 but it was never announced at the C1 gate nor did I receive any email or text message or phone call about the gate change. I was in a window seat. In the other two seats next to me were Mr. Rotund and Ms. Rotunda, a youngish couple. Just the two of them should have booked three seats. I was smashed up against the wall and window for five hours. Overall, I'd say my flight sucked. Wouldn't you?

I couldn't get checked in 24 hours before either leg of my flight. I tried both my Alaska and Hawaiian codes on both apps.

We moved from the international terminal to a new location. I think there are still some bugs to work out . We didn’t receive check in notification and had to scramble to find it but i think it will work out

I'm was impressed with their service. Everything was great

All in All a great experience. Cost of luggage sucks … first time I ever had to pay for luggage. Otherwise the check in counter was awesome, the gate clerks were great and the Stewards & Esses were the best.

As my daughter was boarding the flight they pulled her from the line and told her, after she had checked in and checked a bag, that she could not board the flight due to a fraud flag on the debit card used for the ticket purchase. The personnel would not allow me to speak to them, saying I had to take it up with customer service that was not present. They tried to get my daughter to purchase another ticket on the spot or get out. The customer service personnel were insistant that the personnel at the gate be on the phone which they would not allow. Would not accept payment from three different accounts and did not resolve the issue. Many conflicting reports about the source of the problem, the fraud department is uncontactable. The only good thing to come of it was checked bag arrived. Our family will not be using Hawaiian Airlines. Ever.

Great staffing. Terrible food. Please do cold sandwiches or salads. the "hot pickets" are terrible.

Love Hawaiian you can’t go wrong, still provides you good drinks and little snack at the end

No tv’s. Had to walk 45 minutes to connect to next flight. Couldn’t get dinner as a result. Ended up eating pretzels until I felt sick.

Not so good. The takeoff was aborted after reaching 100 knots due to a problem with the front tires. I do commend the pilot for a quick decision and preventing a potential disaster. We returned to the gate to put fresh tires on the front. Our flight was delayed for over 3 hours. The rest of the flight was okay. We were reimbursed by Hawaiian Airlines for only $50. Not too generous

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

Information on your arrival and departure airports

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