$105 Find Cheap Flights from Seattle to Idaho - Compare and Save

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Cheap Flights from Seattle to Idaho

Cheapest round-trip prices found by our users on KAYAK in the last 5 days
Boise
Boisenonstop$201
Idaho Falls
Idaho Fallsnonstop$297
Hailey
Haileynonstop$237
Lewiston
Lewistonnonstop$229
Twin Falls
Twin Falls1 stop$326
Pocatello
Pocatello1 stop$337
Spokane
Spokanenonstop$219
Boise
Boisenonstop$201
Idaho Falls
Idaho Fallsnonstop$297
Hailey
Haileynonstop$237
Lewiston
Lewistonnonstop$229
Twin Falls
Twin Falls1 stop$326
Pocatello
Pocatello1 stop$337
Spokane
Spokanenonstop$219
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.

How much is a round-trip flight from Seattle to Idaho?

Flight prices are below average for this route right now.

Flights to Idaho from Seattle usually cost between $217 and $443 in January.
The lowest price found in the past 5 days was $201 on Alaska Airlines (Jan 16-Jan 19).

What is the cheapest Seattle to Idaho flight route?

The cheapest ticket to Idaho from Seattle found in the last 5 days was to Boise, at $157 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 5 days was $157.

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

The cheapest time of day to fly to Idaho is generally in the afternoon, when round-trip flights cost $232 on average. Morning departures are around 22% more expensive than evening flights, on average. The most expensive time of day to fly to Idaho is generally in the morning, which is peak travel time and where the average cost of a ticket is $284.

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

No, with an average price for the route of $407, prices are generally cheapest when you fly direct.

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

The cheapest month for flights from Seattle to Idaho is April, when tickets cost $168 (return) on average. On the other hand, the most expensive months are July and December, when the average cost of round-trip tickets is $367 and $331 respectively.

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

If your flying dates are flexible, you should consider flying to Idaho on a Friday, 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 get a below average price on the flight from Seattle to Idaho, you should book around 4 weeks before departure, which saves you about 61% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 20 weeks before departure.

Good to know

Low season

July

Cheapest flight

$105
Best time to beat the crowds but there is an average 12% increase in price.
Most popular time to fly with an average 6% increase in price.
Flight from Seattle to Boise

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

Insights shared by verified travelers who flew the route from Seattle to Idaho 
BrendaFlew with Alaska Airlines-Oct 2026
You will have to gate check your bag if it is any bigger than a backpack or duffle bag. Expect to find your bag in baggage claim, not at the end of the walkway.
Verified travelerFlew with Alaska Airlines-Feb 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.

Reviews of the top airlines flying from Seattle to Idaho

 
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 13131 reviews
7.0Entertainment
7.0Food
7.8Comfort
8.5Crew
8.1Boarding
Airline reviews

My bag was gate checked in Seattle and I was told it would be at the end of the walkway when I arrived in Idaho. It was not and I had to get it from baggage claim. Southwest Airlines will gate check a bag even if they have room for it in the cabin. I like that a lot. Seattle Airport is not that easy to maneuver. Indianapolis is one of the easiest airports to navigate.

8.0 ExcellentBrenda, Oct 2026
Read more Alaska Airlines reviews

My bag was gate checked in Seattle and I was told it would be at the end of the walkway when I arrived in Idaho. It was not and I had to get it from baggage claim. Southwest Airlines will gate check a bag even if they have room for it in the cabin. I like that a lot. Seattle Airport is not that easy to maneuver. Indianapolis is one of the easiest airports to navigate.

Uneventful, which is perfection in airline travel. Everything happened as it should and when it should. Flight was short so no food. I could have used the App to watch something but took a nap.

Healthier snack options in first class. Offer fruits, proteins, etc

Last minute change in gate to satellite N a bit of a hassle since I needed a wheelchair . Someone did come and get me to the gate but it was close. Then plane late. It’s hard on older passengers and families to have to trek from one gate to another.

The crew was great and everything went smoothly coming and going.

Pretzels are always a disappointment. Cheezits, Sun Chips, trail mix, anything else would be nice.

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.

Flight delayed due to engine issue. For 3+ hours still not on flight

There wasn’t any entertainment nor food serve on our flight due to the short flight duration

Nobody’s fault but turbulence all the way meant no service and no access to the bathroom,

dropped my bags at Seattle Delta curbside. 1.5 hours before departure. one bag oversized made it. the other was left at curb and mishandled. poor communication from delta in sjc baggage claim. No internet on flight and food choices in business are horrible. You are forcing us to fly Alaska which is shockingly better than the Delta experience. that is a low bar.

Delta is the best. It was all very easy and on time.

Delay from Atlanta to Tampa was simply unacceptable. Multiple delays led to us landing after 3am. Worst travel experience of my life

Comfortable seats. Nice service online. Short flight, so not a lot of time to enjoy.

The flight was done by SkyWest only WIFI no entertainment center are available on the CRJ

My flight was delayed by 4 hours in 30 minute increments. The gate agents were amazing but the communication was not. We were told that there was a maintenance issue but they didn't know what it was. That didn't inspire confidence. Then they said they found it and it was fixed and the pilot just needed to sign off. Then the pilot needed to talk to the other pilot from the arriving flight and we'd be fine. Then we were waiting for the pilot to call back. Then the maintenance issue wasn't fixed. Then they decided we were getting a new plane (why didn't they decide this earlier??). Fine. But then they announced we were changing gates AND terminals. And we were boarding in 20 minutes. So we all had to run to the new terminal gate. We could have taken off at that time, but we then had to wait for all the people who rebooked on a different flight to book this flight again. That took 30+ minutes because there was only one gate agent. When everyone ditched this flight, I saw it as an opportunity to upgrade to comfort. Delta, the greedy jerks they are, charged me $121. After their delay, their fault, their issues, couldn't even discount an upgrade. They only handed out $12 meal vouchers for the delay. I can't even get a snack from starbucks for that.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

We sat on the runway for over an hour before departure. That was unwelcome.

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

More options for your flight from Seattle to Idaho

Complete your trip to Idaho with a hotel stay or car rental