SEA - BOI

$59 Find Cheap Flights from Seattle to Boise

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 Boise departing on 4/10. 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 Boise

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Boise, 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 Boise, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$99
Overall average: $193
Delta
Fri 4/10Sun 4/12
SEA - BOI • Non-stop
Cheapest one-way
$59
Typical prices: $78-$259
Alaska Airlines
Fri 4/10
SEA - BOI • Non-stop
Advice from real travelers
AI-powered summary based on content written by travel experts. AI can make mistakes.
Delta offers free Wi-Fi for SkyMiles members.
Alaska Airlines' Wine Flies Free allows free wine check-in.
Expert advice
Expert advice
Expert advice
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Top airlines
Cheapest • from $99 (round-trip)
Best reviews • 8.0 score
Airline reviews
Airline reviews
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Airline reviews
Airline reviews
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Nonstop flights
You can fly direct with Alaska Airlines and Delta. Average duration is 1h 30m
Direct flights
Direct flights
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Direct flights
Direct flights
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When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 63% compared to booking last minute.
Insights
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Insights
Insights
When to travel
Cheapest • 50% price drop
Most popular
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We hope you love your trip to Boise!
Flight Deals
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Flight Deals

Cheap Flights from Seattle to Boise (SEA-BOI)

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

Fri, Apr 10 - Sun, Apr 12
Delta Logo
9:21 pm - 11:46 pm
SEA
-
BOI
1h 25mnonstop
Delta Logo
7:30 am - 8:17 am
BOI
-
SEA
1h 47mnonstop
$99Delta
Mon, Apr 6 - Mon, Apr 13
Delta Logo
9:21 pm - 11:46 pm
SEA
-
BOI
1h 25mnonstop
Delta Logo
1:52 pm - 2:40 pm
BOI
-
SEA
1h 48mnonstop
$108Delta
Sat, May 9 - Sat, May 9
Alaska Airlines Logo
12:55 pm - 3:33 pm
SEA
-
BOI
1h 38mnonstop
Alaska Airlines Logo
6:08 pm - 6:48 pm
BOI
-
SEA
1h 40mnonstop
$112Alaska Airlines
Thu, Apr 2 - Tue, Apr 7
Alaska Airlines Logo
1:03 pm - 3:29 pm
SEA
-
BOI
1h 26mnonstop
Alaska Airlines Logo
8:20 am - 9:04 am
BOI
-
SEA
1h 44mnonstop
$117Alaska Airlines
Sat, Apr 4 - Sat, Apr 11
Delta Logo
6:30 pm - 9:01 pm
SEA
-
BOI
1h 31mnonstop
Delta Logo
10:35 am - 11:20 am
BOI
-
SEA
1h 45mnonstop
$118Delta
Fri, Apr 17 - Sun, Apr 19
Delta Logo
7:20 am - 10:01 am
SEA
-
BOI
1h 41mnonstop
Delta Logo
7:24 am - 8:15 am
BOI
-
SEA
1h 51mnonstop
$119Delta
Sun, Apr 5 - Sun, Apr 12
Delta Logo
7:15 am - 9:55 am
SEA
-
BOI
1h 40mnonstop
Delta Logo
5:52 am - 6:40 am
BOI
-
SEA
1h 48mnonstop
$128Delta
Sat, Apr 4 - Sun, Apr 5
Delta Logo
4:10 pm - 6:43 pm
SEA
-
BOI
1h 33mnonstop
Delta Logo
4:43 pm - 5:25 pm
BOI
-
SEA
1h 42mnonstop
$137Delta
Fri, Apr 10 - Sat, Apr 11
Alaska Airlines Logo
9:29 pm - 11:56 pm
SEA
-
BOI
1h 27mnonstop
Alaska Airlines Logo
8:20 am - 9:04 am
BOI
-
SEA
1h 44mnonstop
$138Alaska Airlines
Mon, Apr 6 - Wed, Apr 8
Delta Logo
10:35 am - 1:05 pm
SEA
-
BOI
1h 30mnonstop
Delta Logo
7:30 am - 8:17 am
BOI
-
SEA
1h 47mnonstop
$148Delta
Booking Insights

KAYAK's insights & trends for Seattle to Boise flights

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

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

Your flight ticket price will generally be cheaper if you fly to Boise on a Saturday and more expensive on a Sunday. On your return trip to Seattle, you should consider flying back on a Friday, and avoid Sundays for better deals.

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

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Boise, 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 Boise is January, where tickets cost $99 (return) on average. On the other hand, the most expensive months are December and June, where the average cost of round-trip tickets is $227 and $217 respectively.

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

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 Boise, 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 Boise, 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 7 weeks before departure.

Expert advice

Expert advice for your flight from Seattle to Boise

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Our travel experts
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Stefanie Waldek

Stefanie Waldek

Expert on Delta

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Good to know

Low seasonFebruary
Cheapest flight$59
Best time to beat the crowds but there is an average 3% increase in price.
Most popular time to fly with an average 15% increase in price.
Flight from Seattle to Boise

When to book flights from Seattle to Boise

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

  • Does Seattle Airport have a nursing room?

    A private space with power outlets, rocking chairs, and receptacles is available in the Mother's Room. The USO Mother's Room is also available to military families inside the Kid's Play Area. There are also nursing suites available in the Main Terminal on the Mezzanine Level, near Gate A9, C10, N2, D10, and D23.

  • What directions do I follow when driving from Seattle to Seattle Tacoma Airport?

    Travelers from Seattle can drive through I-5 and take exit 154 B, then head west on State Road 518 until you reach the Seattle Tacoma International Airport exit. Alternatively, you can take State Highway 99 south and keep to the right on Route 509 south until you reach the exit. Finally, follow the Seattle Tacoma Airport exit by turning left onto 518.

  • Can I use public transit from Boise Airport?

    Passengers have the option to board a train for the next part of their journey once they arrive at Boise Airport. Travelers can take a taxi or shuttle from the airport to the Amtrak train station in Downtown Boise, where they can connect by train to several locations in the area. There are also Greyhound and ValleyRide buses from the airport to destinations around Idaho.

  • Which hotels can I find near Boise Airport?

    Inn America Boise is about 0.8 miles from the airport, the Western Vista Inn is 0.6 miles from the airport, and Airport Inn is 1km from the airport. Hotels offer courtesy shuttles that pick up passengers opposite the baggage claim area. Additionally, the Boise Shuttle Service provides transportation to hotels in the surrounding area from the green curb outside the terminal.

  • What is the cheapest flight from Seattle to Boise?

    In the last 3 days, the lowest price for a flight from Seattle to Boise was $59 for a one-way ticket and $99 for a round-trip.

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

    No

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

    Alaska Airlines, Delta, American Airlines, and Hawaiian Airlines offer inflight Wi-Fi service on the Seattle to Boise flight route.

  • Which aircraft models fly most regularly from Seattle to Boise?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Seattle to Boise flight route.

  • Which airline alliances offer flights from Seattle to Boise?

    SkyTeam, and oneworld are the airline alliances operating flights between Seattle and Boise, with SkyTeam being the most commonly used for this route.

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

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

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

    The two airlines most popular with KAYAK users for flights from Seattle to Boise are Alaska Airlines and Delta. With an average price for the route of $208 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 $197 and an overall rating of 7.9.

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

    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 Boise.

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

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

    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 Boise with an airline and back to Seattle with another airline. Booking your flights between Seattle and BOI 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 Boise?

    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 Boise 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 Boise

  • Looking for a cheap flight? 25% of our users found flights on this route for $98 or less one-way and $150 or less round-trip.
  • Travelers can head to Smarte Carte Baggage Storage at Between Carousels 12 and 13, baggage claim level, where they can have their luggage kept as they explore the airport. You can store all types of baggage, including frozen and chilled things. There are also business services like notary and fax available.
  • Passengers can shop at Dufry Duty-Free stores at Gates A, S, and the Central Terminal in Seattle Airport (SEA). You can get some newspapers or magazines at Hudson News sites available round-the-clock at Gates D6, D22, and the Central Terminal near the baggage claim area.
  • There are art installations across Seattle Airport. The Central Terminal has the best of these, featuring a striking mobile that hangs from the ceiling. Some of the artwork is vintage, and tourists adore it, such as the fish swimming along Concourse B's floor.
  • If you are traveling with your furry friend, you can take them to the pet relief space at Boise Airport (BOI) located at the west doors next to baggage claim on the route to the rental car area from the west side of the arrivals area.
  • The Information Center, operated by skilled volunteers called the Boise Airport Beacons, is situated close to the rental car and baggage claim lobbies on the lower-level concourse of the passenger terminal. Travelers can make an inquiry at the desk.

Prefer to fly direct from Seattle to Boise?

 
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 Boise Air Term. Gowen Fld.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to Boise Air Term. Gowen Fld Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to Boise Air Term. Gowen Fld

Monday

Alaska Airlines,Delta

Alaska Airlines,Delta

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta

Alaska Airlines,Delta

Friday

Alaska Airlines,Delta

Alaska Airlines,Delta

Saturday

Alaska Airlines,Delta

Alaska Airlines,Delta

Sunday

Alaska Airlines,Delta

Alaska Airlines,Delta

See more direct flights

Direct returns

Boise Air Term. Gowen Fld to Seattle/Tacoma Intl

Monday

Alaska Airlines,Delta

Alaska Airlines,Delta

Tuesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Wednesday

Alaska Airlines,Delta

Alaska Airlines,Delta

Thursday

Alaska Airlines,Delta

Alaska Airlines,Delta

Friday

Alaska Airlines,Delta

Alaska Airlines,Delta

Saturday

Alaska Airlines,Delta

Alaska Airlines,Delta

Sunday

Alaska Airlines,Delta

Alaska Airlines,Delta

See more direct flights

Reviews of the top 3 airlines serving from Seattle to Boise

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Boise. 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 Boise? 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 12042 reviews
8.5Crew
7.1Food
7.0Entertainment
7.8Comfort
8.1Boarding
Airline reviews

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

10.0 ExcellentAnonymous, Mar 2026
SEA - BZN
Read more Alaska Airlines reviews

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

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

Wonderful as always! Pleasant staff, smooth ride, and timely departure.

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.

They are always so great! Friendly, on time if not early, organized boarding process. Great price too.

Crew very courteous. Boarding was great. Slow to get baggage at Denver.

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.

Extremely disappointed with Delta. They canceled flight last minute and then I rebooked the other flights and with which were delayed as well

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

The flight was flying with 30% capacity. The flight my seat from preferred seating to back of the seat. Even though i can understand that this was to balance the flight weight. The flight attendance decided to do the serving near my seat and in the middle , their noices woke me up from sleep , when i realized that the service has ended and when they were going back asked for a coffee, for which they answered they have completed teh service in my location. That really upset me as they woke me up and also rejected the coffee i asked. I ended up landing with a headache, thanks to the crew that screwed up my travel

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 Boise

Information on your arrival and departure airports