$59 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 4/2. 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
1 adult, Economy, 0 bags

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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Flight Deals

Cheap Flights from Seattle to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
Boise
Boisenonstop$99
Idaho Falls
Idaho Fallsnonstop$157
Hailey
Hailey1 stop$159
Lewiston
Lewistonnonstop$167
Twin Falls
Twin Falls1 stop$394
Pocatello
Pocatello1 stop$447
Spokane
Spokanenonstop$99
Boise
Boisenonstop$99
Idaho Falls
Idaho Fallsnonstop$157
Hailey
Hailey1 stop$159
Lewiston
Lewistonnonstop$167
Twin Falls
Twin Falls1 stop$394
Pocatello
Pocatello1 stop$447
Spokane
Spokanenonstop$99

Book Cheap Seattle to Idaho Plane Tickets

 
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

mié., abr. 15 - sáb., abr. 18
Alaska Airlines Logo
5:23 pm - 7:48 pm
SEA
-
BOI
1h 25mnonstop
Alaska Airlines Logo
6:00 am - 6:43 am
BOI
-
SEA
1h 43mnonstop
$99Alaska Airlines
jue., abr. 16 - dom., abr. 19
Delta Logo
7:25 am - 8:47 am
SEA
-
GEG
1h 22mnonstop
Delta Logo
6:15 am - 7:36 am
GEG
-
SEA
1h 21mnonstop
$99Delta
mié., abr. 22 - sáb., abr. 25
Alaska Airlines Logo
9:59 pm - 11:11 pm
SEA
-
GEG
1h 12mnonstop
Alaska Airlines Logo
2:45 pm - 4:03 pm
GEG
-
SEA
1h 18mnonstop
$112Alaska Airlines
jue., abr. 16 - dom., abr. 19
Delta Logo
7:50 pm - 10:24 pm
SEA
-
BOI
1h 34mnonstop
Delta Logo
7:24 am - 8:15 am
BOI
-
SEA
1h 51mnonstop
$118Delta
jue., abr. 16 - lun., abr. 20
Hawaiian Airlines Logo
9:59 pm - 11:10 pm
SEA
-
GEG
1h 11mnonstop
Hawaiian Airlines Logo
1:54 pm - 6:49 pm
GEG
-
SEA
4h 55m
1 stop
$126Hawaiian Airlines
jue., abr. 16 - lun., abr. 20
Hawaiian Airlines Logo
9:59 pm - 11:10 pm
SEA
-
GEG
1h 11mnonstop
Hawaiian Airlines Logo
1:54 pm - 6:49 pm
GEG
-
SEA
4h 55m
1 stop
$142Hawaiian Airlines
mié., abr. 15 - mié., abr. 15
Southwest Logo
6:30 am - 3:25 pm
SEA
-
BOI
7h 55m
1 stop
Southwest Logo
5:00 pm - 10:55 pm
BOI
-
SEA
6h 55m
1 stop
$151Southwest
jue., abr. 23 - sáb., abr. 25
Southwest Logo
5:30 am - 5:00 pm
SEA
-
BOI
10h 30m
1 stop
Southwest Logo
2:50 pm - 10:10 pm
BOI
-
SEA
8h 20m
1 stop
$156Southwest
mar., jun. 2 - mar., jun. 9
United Airlines Logo
3:33 pm - 9:45 pm
SEA
-
JAC
5h 12m
1 stop
United Airlines Logo
8:00 am - 2:30 pm
JAC
-
SEA
7h 30m
1 stop
$301United Airlines
vie., abr. 3 - mar., abr. 7
United Airlines Logo
7:12 am - 1:56 pm
SEA
-
JAC
5h 44m
1 stop
United Airlines Logo
4:15 pm - 9:06 pm
JAC
-
SEA
5h 51m
1 stop
$313United Airlines
Booking Insights

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?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Idaho from Seattle found in the last 72 hours was to Boise, at $78 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 $78.

What is the cheapest time of day to fly to Idaho?

The average price for all round-trip flights from Seattle to Idaho depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Idaho is generally in the afternoon, when round-trip flights cost $197 on average. Morning departures are around 1% more expensive than evening flights, on average. The most expensive time of day to fly to Idaho is generally at night, which is peak travel time and where the average cost of a ticket is $213.

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 $254, 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 $99 (return) on average. On the other hand, the most expensive months are December and March, when the average cost of round-trip tickets is $232 and $217 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 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, which saves you about 63% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$59
Best time to beat the crowds with an average 19% drop in price.
Most popular time to fly with an average 3% 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.

Reviews of the 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.
7.9
Alaska AirlinesOverall score based on 12059 reviews
7.8Comfort
8.5Crew
8.1Boarding
7.0Food
7.0Entertainment
Airline reviews

Departing flight for our weekend trip was cancelled due to weather which meant our return flight was useless. The whole thing was difficult to get support through but Alaska did recover and was able to reimburse us for the flights yesterday. For some reason, Kayak was not kept in the loop, adding to the confusion.

2.0 MediocreDavid, Mar 2026
SEA - STS
Read more Alaska Airlines reviews

Departing flight for our weekend trip was cancelled due to weather which meant our return flight was useless. The whole thing was difficult to get support through but Alaska did recover and was able to reimburse us for the flights yesterday. For some reason, Kayak was not kept in the loop, adding to the confusion.

i canceled my return flight package with Alaska Airlines. Customer Service was excellent and assisted me to cancelled both of our reservations and returned the payment in full. that is excellent service and understanding and empathy of the customers' needs. i like Alaska Airlines and recommend AS to everyone.

Never got on because the airline sent the WRONG plane to take us on our first leg of the trip so we missed ALL connecting flights. No help available from anyone at the airline…

The crew inside the airport for Alaska was rude, lazy and incompetent

The flight was extremely smooth, and so was the landing. Great piloting.

Plane was clean, staff was professional and flight was on time. No built in tv was still ok, as programs were offered that could synch to smart phones.

J was in the ER x 3...3 protruding discs...contacted Alaska many many days prior to cancel and request a refund or a credjt.. they only gave me 50 % credit....outrageous seeing how i have a doctors letter....just plain inhuman. AI sucks!

The flight was too short. No snacks or drinks offered.

The flight attendant was friendly and attentive. Although our interaction was brief—- it made a difference. The crew was upfront about turbulence. I like the Maui pretzels.

Everything was good. Please have a wheat free option for snacks in the future.

Perhaps when you’re sitting in 1st class and the crew closes the bathroom for the pilots, there could be a notification other than holding your hands up as a blockade when you get there and you’re told the restrooms are closed please turn around … especially at night when visibility is poor and you’re met by a flight attendants with their arms up

First class is comfortable. Enjoyed a movie and was able to relax compared to coach.

Loved flying First Class. Very comfortable. The seat was amazing. Enjoyed a movie and was able to relax so much better than in coach.

We landed and sat on the tarmac for 45 minutes because they only have one gate at the airport and there was another plane running late so we had to wait

The WiFi was not working. That made for a long flight.

Absolutely no communication on why there's a delay and multiple flight time reschedules. I would have canceled the flight and drove back home if I known it was going to be rescheduled 3 or 4 times.

Another late night flight and MORE men belligerently drinking and yelling. I had to move from first to economy because they were so obnoxious and disruptive. Crazy to go from a cozy chair to cardboard when you were supposed to be in first. Delta allows was too much drinking which leads to belligerent behavior.

I was in first class and literally the men behind me were so aggressively loud I moved myself to economy. This has become so common on Delta - people using audio without headphones, and men on 12am / late night flights drinking and yelling to talk to each other which prevents anyone around them from resting. Pretty crazy to have to move from first to economy (poorer service, less comfort...). Wild wild. Looking into other airlines.

Love delta smaller commuter plane so no entertainment and paid wifi on MKE-LGA leg was extremely unreliable and slow

Stop changing gates. Stop cancelling flights Stop moving my seat.

The crew were exceptionally nice and accommodating. My wife was tired after the flight from Haneda, Tokyo. They let her sleep and served her dinner later after she woke up, before we landed in PDX.

No charging outlets worked. Other than collecting trash attendants didn’t come around. No one could hear flight attendants announcements during the flight. Seat pads were horrible. Sitting on a board for 5 hours. What happened to Hawaiian airlines comfort, hospitality, and extras? Our pilots did an excellent job trying to minimize turbulence and incredible job in landing in windy conditions.

There was no wifi available at any price -- the plane did not have wifi equipment. Movie choices were blah - hits from the past; nothing recent. The food was blah airplane food. They should have had Mai Tai drinks available as per the Hawaiian Airlines magazine, but they had none onboard.

I like that if they asked you to checked in a bag at the gate they give you priority to board

Horrible food and crew. Crew were laughing and talking loud while people were trying to sleep

Yall need to integrate your system with Alaska more efficiently. They booted me off the first flight because of a discrepancy on your end.

The crew at Hawaiian Airlines was fantastic. Kind and hard working. The pilots were great with giving us all the updates to make sure we were informed.

Very good. Nice plane and we sat in economy plus - bigger seats, more room. They served a meal and snacks, and the meal was an apple stuffed pancake that was very good! The snack for us was a hummus sandwich - also very good. The flight attendants were helpful and nice. They have plenty of movies and shows to watch. My only negative -- they changed our flights around and did not adjust the layovers, so we ended up with a very long and unnecessary layover in Honolulu.

I liked the Starlink WiFi but didn't like how they said they were the only airline to offer a free meal and it turns out to be just a standalone sandwich and then charge for snacks to go with it. Rather have the free snacks like Southwest, but have the option to purchase a decent meal for a 5+ hour flight.

Flight scheduled to take off at 5.55pm but it did not take off until 7pm due to some food delivery delay.

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

Information on your arrival and departure airports