BOI

$66 Find Cheap Flights from Washington 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 to Boise departing on 1/5. 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

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Everything you should know

Cheapest round-trip
$99
Overall average: $176
Delta
Wed 1/21Wed 1/28
SEA - BOI • Non-stop
Cheapest non-stop
$99
Typical prices: $99-$257
Alaska Airlines
Wed 1/21Sat 1/24
SEA - BOI • Non-stop
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Flight Deals
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Flight Deals

Cheap Flights from Washington to Boise

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

Wed, Jan 21 - Wed, Jan 28
Delta Logo
3:59 pm - 6:28 pmSEA-BOI
1h 29mnonstop
Delta Logo
5:15 pm - 6:08 pmBOI-SEA
1h 53mnonstop
$99Delta
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Fri, Jan 23 - Sun, Jan 25
Hawaiian Airlines Logo
10:20 am - 12:51 pmSEA-BOI
1h 31mnonstop
Hawaiian Airlines Logo
5:40 am - 8:14 amBOI-SEA
3h 34m1 stop
$113Hawaiian Airlines
Find Deal
Fri, Jan 23 - Mon, Jan 26
Hawaiian Airlines Logo
9:36 pm - 11:59 pmSEA-BOI
1h 23mnonstop
Hawaiian Airlines Logo
7:59 pm - 10:33 pmBOI-SEA
3h 34m1 stop
$114Hawaiian Airlines
Find Deal
Fri, Jan 23 - Sun, Jan 25
Hawaiian Airlines Logo
12:43 pm - 3:10 pmSEA-BOI
1h 27mnonstop
Hawaiian Airlines Logo
7:00 am - 10:28 amBOI-SEA
4h 28m1 stop
$115Hawaiian Airlines
Find Deal
Thu, Dec 25 - Thu, Jan 1
Alaska Airlines Logo
1:44 pm - 4:06 pmSEA-BOI
1h 22mnonstop
Alaska Airlines Logo
9:50 pm - 10:35 pmBOI-SEA
1h 45mnonstop
$116Alaska Airlines
Find Deal
Fri, Jan 23 - Sun, Jan 25
Hawaiian Airlines Logo
8:30 am - 10:52 amSEA-BOI
1h 22mnonstop
Hawaiian Airlines Logo
7:00 am - 10:28 amBOI-SEA
4h 28m1 stop
$117Hawaiian Airlines
Find Deal
Tue, Jan 13 - Mon, Jan 19
Alaska Airlines Logo
8:25 am - 12:54 pmSEA-BOI
3h 29m1 stop
Alaska Airlines Logo
10:00 am - 10:38 amBOI-SEA
1h 38mnonstop
$118Alaska Airlines
Find Deal
Fri, Jan 23 - Sun, Jan 25
Hawaiian Airlines Logo
12:43 pm - 3:10 pmSEA-BOI
1h 27mnonstop
Hawaiian Airlines Logo
5:40 am - 8:14 amBOI-SEA
3h 34m1 stop
$120Hawaiian Airlines
Find Deal
Mon, Feb 2 - Wed, Feb 4
Southwest Logo
6:20 am - 3:20 pmGEG-BOI
8h 00m1 stop
Southwest Logo
6:05 am - 2:30 pmBOI-GEG
9h 25m2 stops
$152Southwest
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Mon, Feb 2 - Wed, Feb 4
Southwest Logo
10:50 am - 10:15 pmGEG-BOI
10h 25m2 stops
Southwest Logo
6:05 am - 2:30 pmBOI-GEG
9h 25m2 stops
$164Southwest
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Useful Info

Good to know

Low seasonJanuary
Cheapest flight$66
Best time to beat the crowds with an average 10% drop in price.
Most popular time to fly with an average 22% increase in price.
Flight from Seattle to Boise

Flights from Washington to Boise: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Washington to Boise 
Learn how KAYAK collects reviews and tips from users.
AllieFlew with Alaska AirlinesGEG-BOIMay 2025
If you can, arrive at airport no sooner than 4 hours before flight.
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 for booking flights from Washington to Boise

  • How does KAYAK find such low prices on flights from Washington 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 Washington to Boise.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Boise from Washington 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 Washington 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 Washington with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Washington 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 Washington up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Traveling to a place near Boise?

Book flights to Boise if you plan to visit one of these locations
McCall
Ontario

Everything you need to know for your flight to Boise

Information on the airport you'll fly into in Boise

Boise (BOI)