SEA - BOI

$99 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 5/30. 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
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 24% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Everything you should know

Cheapest round-trip
$177
Typical prices: $292-$162
Alaska Airlines
Wed 5/27Sat 5/30
SEA - BOI • Non-stop
Cheapest non-stop
$177
Typical prices: $293-$177
Delta
Wed 5/27Wed 6/3
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
Expert advice
Top airlines
Cheapest • from $177 (round-trip)
Best reviews • 7.9 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Nonstop flights
You can fly direct with Alaska Airlines and Delta. Average duration is 1h 33m
Direct flights
Direct flights
+1
+1
Direct flights
Direct flights
+1
When to book
in advance
Our data shows that travelers who book at least 4 weeks in advance save around 65% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
Cheapest • 50% price drop
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Boise!
Flight Deals
Booking Insights
Expert advice
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

Wed, May 27 - Sat, May 30
Alaska Airlines Logo
3:49 pm - 6:14 pm
SEA
-
BOI
1h 25mnonstop
Alaska Airlines Logo
6:07 pm - 6:52 pm
BOI
-
SEA
1h 45mnonstop
$177Alaska Airlines
Fri, May 29 - Sat, May 30
Delta Logo
7:15 am - 9:54 am
SEA
-
BOI
1h 39mnonstop
Delta Logo
6:00 pm - 6:42 pm
BOI
-
SEA
1h 42mnonstop
$187Delta
Fri, May 29 - Sun, May 31
Delta Logo
11:59 am - 2:43 pm
SEA
-
BOI
1h 44mnonstop
Delta Logo
6:00 pm - 6:42 pm
BOI
-
SEA
1h 42mnonstop
$197Delta
Wed, May 27 - Wed, Jun 3
Southwest Logo
11:40 am - 7:00 pm
SEA
-
BOI
6h 20m
1 stop
Southwest Logo
11:35 am - 9:00 pm
BOI
-
SEA
10h 25m
1 stop
$202Southwest
Sat, May 30 - Mon, Jun 1
Delta Logo
9:00 am - 11:35 am
SEA
-
BOI
1h 35mnonstop
Delta Logo
3:14 pm - 3:53 pm
BOI
-
SEA
1h 39mnonstop
$207Delta
Sat, May 23 - Mon, May 25
Delta Logo
7:35 pm - 10:13 pm
SEA
-
BOI
1h 38mnonstop
Delta Logo
5:45 am - 6:29 am
BOI
-
SEA
1h 44mnonstop
$208Delta
Sat, May 30 - Mon, Jun 1
Southwest Logo
1:20 pm - 10:05 pm
SEA
-
BOI
7h 45m
1 stop
Southwest Logo
1:20 pm - 10:35 pm
BOI
-
SEA
10h 15m
1 stop
$212Southwest
Thu, May 28 - Thu, Jun 4
Southwest Logo
8:00 am - 5:00 pm
SEA
-
BOI
8h 00m
1 stop
Southwest Logo
7:20 pm - 11:50 pm
BOI
-
SEA
5h 30m
1 stop
$217Southwest
Tue, May 19 - Wed, May 27
United Airlines Logo
8:38 am - 3:26 pm
SEA
-
BOI
5h 48m
1 stop
United Airlines Logo
7:05 pm - 1:13 am
BOI
-
SEA
7h 08m
1 stop
$225United Airlines
Tue, May 26 - Fri, May 29
Delta Logo
7:35 pm - 10:13 pm
SEA
-
BOI
1h 38mnonstop
Delta Logo
9:16 pm - 10:05 pm
BOI
-
SEA
1h 49mnonstop
$227Delta
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.

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

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Boise departing in May.

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 June and December, where the average cost of round-trip tickets is $249 and $237 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 65% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 9 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$99
Best time to beat the crowds but there is an average 2% increase in price.
Most popular time to fly with an average 19% 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 $99 for a one-way ticket and $177 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, Hawaiian Airlines, and JetBlue 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 $221 and an overall rating of 7.9, 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 $118 or less one-way and $227 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.
7.9
Alaska AirlinesOverall score based on 12319 reviews
7.0Entertainment
7.8Comfort
8.5Crew
8.1Boarding
7.1Food
Airline reviews

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

10.0 ExcellentHayes, Apr 2026
SEA - IDA
Read more Alaska Airlines reviews

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

My window seat did not have a window. I chose seat 11A thinking I would have a view. I had a wall instead.

See what I wrote in the previous section. This was a terrible experience. I would like refund.. I even paid an extra $70 for an aisle seat closer to the front to ensure that I got off early enough to catch the next flight. The fact that the plane did not wait, and even left eearlier, knowing that the first flight came in late, and was moved to a terminal three train stops away is appalling. My friend that flew JetBlue, their flight was delayed and came in later and the connecting flight WAITED for them. How is it that JetBlue could do that, and Alaska could not.

This was my second time flying Alaska Airline in the 1st Class cabin. Everything was fine with the exception of the food and entertainment. The food was just ok but not what I was expecting from 1st Class. A BBQ pork sandwich and baked potato. There wasnt any in-flight entertainment. I found that odd since it was a coast to coast flight Seattle to Dulles. My sister flew 1st Class on Delta on a shorter flight ( Seattle to Cincinnati) and had an awesome meal and in-flight entertainment. I typically fly Delta but there wasn’t a flight with times that fit my schedule. I am by no means a primary donna. But when my upgrade cost over $900…I didn’t use any reward miles…I was expecting more than what I got. I will never fly Alaska Airline 1st Class again. I will stick with Delta for all my travel needs whether it’s in 1st Class or coach.

Good staff. Comfortable seats. Had to check my bag because the flight was too full.

Loved this first class flight! Awesome food, snacks and drinks. Comfortable seat with foot rest. Good movie. Very friendly crew! Only thing I would suggest is having a screen on seat back in front of me so I didn’t have to watch the movie on my phone.

The crew was very attentive, boarding was orderly. I really liked the way Alaska Airlines gives boarding passes and dropping off my bags. Very smooth.

Once we were in the air, the flight was nice and smooth. The flight was about twenty minutes late to begin with, though, and then we needed to wait to land for another plane to land first.

Flight crew great! No WiFi not great. Someone took my bag not great!

Alaska Airlines staff go out of their way to accommodate my fragile musical instrument, every time. They are unlike any other airline. I've experienced this can-do attitude on several flights with different staff, so this must be the culture of their company. I appreciate Alaska!

The agent at check in and at the gate were less than thrilled to be at work. I'm not a fan of Kayak's placement on the plane. I got put in the middle seat and none of my preferences were used.

In ATL they have two sets of departure screens. Follow what is on your airline's departure board - the ATL Airport Authority departure board had completely incorrect details about the gate assignment for my flight, which would have made me miss boarding.

Flight was delayed it was hot while sitting on the plane, one engine was working on the plane until they had to do some jimmy rigging down the runway in order for the other engine to charge up. It was ridiculous

The flight was very good and the staff was very friendly and helpful!

The only thing I would say is we tried to get on a standby earlier flight, but with our fair we couldn’t. That seems senseless to leave with open seats..

Very easy to use and convenient, you can perform any action within the same portal

In a world of delays, Delta was on time both ways! Boarding was fast and efficient. Staff was friendly. AND wifi worked.

WiFi didn’t work. Flight delayed 3 hours Crew members were illiterate Seat lean back did not work.

Flight was delayed, we could have been notified earlier and in a consistent manner. App was not refreshing for another passenger to get the latest flight status. We could have stayed and waited at the hotel instead of waiting at the airport had we known the flight was going to delayed for more than 5 hours. The toilet is too tight, and needs to be cleaned more frequently (every hour). The entertainment screen froze, the touch screen not responding to touch. We were upgraded to comfort, it is more comfortable than regular economy seats.

This wasn't my experience with Delta. It was just the Pegasus flight. Seats were very hard. Staff was kinda rough. Not very nice. Charged me for snacks. For a 4 hour flight I would've expected more.

Flight delayed two hours , missed connection flight then connection cancelled- horrible experience with hotel

Omg the disaster at the security was on another level! “Go to this end, sorry closed now, go to that end”. Ridiculous! This took over an hour! As far as the airline was concerned although I booked nearly a year ago I couldn’t get my bag tag - stand in another 15 minute line or my seat on Hawaiian Airlines- 5 more minutes! Then my TSA status was denied. Like what the heck! Makes a person not want to travel with this amount of incompetence

The Honolulu Hub needs 2 to 3 times the amount of things to do as well as shuttles that transport to/from gates and terminals. Arriving from OCONUS locations; transferring to CONUS locations its a miserable experience. Fetching and re-checking bags, then returning to a gate across the airport take longer than any other large airport. If youre confused by what I mean, the process goes like this: Disembark plane Walk a mile to the main terminal Walk half a mile to baggage claim Wait 40 minutes for baggage Walk a mile to re-check-in baggage Wait 20 minutes for checking in those bags Fo back through the wrong TSA line because the signage is poor Almost miss the connecting flight because your gate is across the airport.

The checking was disaster, the crew wasn't behave well. It took us two hours to check in, after that thr line at the TSA was long, we barely make the flight. Bad airline

Fabulous if you have a portable wheelchair. They can store it in the galley and you can just walk out with it. Really nice and the flat seats are just incredible, very nice. iPads for movies, also pretty nice,

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

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

Information on your arrival and departure airports