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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

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. Visit our flight page for the latest deals!>/a>

$68 CHEAP FLIGHTS from Washington to Boise

BOI

KAYAK searches hundreds of travel sites at once for deals on flights to Boise

...and more

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.

Cheapest round-trip

$98

Overall average: $207

Alaska Airlines

Sat 2/21Sat 2/28

SEA - BOI • Non-stop

Cheapest one-way

$68

Typical prices: $135-$259

Frontier

Thu 1/29

SEA - BOI • 1 stop

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

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.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Washington to Boise

Sat, Feb 21 - Sat, Feb 28

9:35 pm - 11:59 pm

SEA

BOI

1h 24mnonstop

6:28 am - 7:13 am

BOI

SEA

1h 45mnonstop

$98Alaska Airlines

Fri, Mar 13 - Mon, Mar 23

6:30 pm - 9:00 pm

SEA

BOI

1h 30mnonstop

1:45 pm - 2:27 pm

BOI

SEA

1h 42mnonstop

$99Delta

Thu, Feb 19 - Sun, Feb 22

12:40 pm - 3:08 pm

SEA

BOI

1h 28mnonstop

6:28 am - 7:13 am

BOI

SEA

1h 45mnonstop

$118Alaska Airlines

Wed, Feb 11 - Sat, Feb 14

6:00 am - 8:12 am

GEG

BOI

1h 12mnonstop

1:58 pm - 2:14 pm

BOI

GEG

1h 16mnonstop

$127Hawaiian Airlines

Wed, Jan 21 - Sat, Jan 24

6:00 am - 8:12 am

GEG

BOI

1h 12mnonstop

5:00 pm - 5:13 pm

BOI

GEG

1h 13mnonstop

$130Hawaiian Airlines

Wed, Jan 21 - Sat, Jan 24

6:00 am - 8:12 am

GEG

BOI

1h 12mnonstop

6:23 am - 11:12 am

BOI

GEG

5h 49m1 stop

$132Hawaiian Airlines

Fri, Jan 23 - Mon, Jan 26

6:05 am - 3:20 pm

SEA

BOI

8h 15m1 stop

10:45 am - 3:40 pm

BOI

SEA

5h 55m1 stop

$151Southwest

Sat, Jan 24 - Wed, Jan 28

12:45 pm - 8:15 pm

PDX

BOI

6h 30m1 stop

11:50 am - 3:45 pm

BOI

PDX

4h 55m1 stop

$154Southwest

Tue, Jan 20 - Fri, Jan 23

7:45 am - 4:10 pm

PDX

BOI

7h 25m1 stop

7:45 am - 2:46 pm

BOI

PDX

8h 01m1 stop

$175United Airlines

Thu, Jan 29 - Thu, Feb 5

3:50 pm - 11:48 pm

PDX

BOI

6h 58m1 stop

10:48 am - 2:46 pm

BOI

PDX

4h 58m1 stop

$176United Airlines

Useful Info

Low season	February
High season	December
Cheapest flight	$68

Best time to beat the crowds with an average 2% drop in price.

Most popular time to fly with an average 28% increase in price.

Flight from Seattle to Boise

AllieFlew with Alaska Airlines

GEG

BOI

May 2025

If you can, arrive at airport no sooner than 4 hours before flight.

Verified travelerFlew with Alaska Airlines

SEA

BOI

Feb 2024

Keep an eye on boarding time. At SEATAC, if you are not sitting at your exact gate, you cannot hear boarding announcements.

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.

McCall

Ontario

Everything you need to know for your flight to Boise

Airports

Cabin class

Complete your trip

Direct Flights

Flights to other cities

Origins

Other airports

Return flight deals

Information on the airport you'll fly into in Boise

Boise (BOI)

BOI

$68 Find Cheap Flights from Washington to Boise

KAYAK searches hundreds of travel sites at once for deals on flights to Boise

Everything you should know

Cheap Flights from Washington to Boise

Recent round-trip flight deals from Washington to Boise

Recent one-way flight deals from Washington to Boise

Recent last minute flight deals from Washington to Boise

Recent direct flight deals from Washington to Boise

Good to know

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

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?

Everything you need to know for your flight to Boise

Information on the airport you'll fly into in Boise

Cabin class types available on flights to Washington

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

Find direct flights for Boise

Flights to other popular destinations

Flights from domestic origins to Boise

Choose which airport to fly into in Boise

Find deals for your return flight