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>

$65 CHEAP FLIGHTS from Washington to Boise

BOI

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

...and more

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41,299,237 searches in the past 7 days on KAYAK

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

Cheapest round-trip

$116

Overall average: $266

Alaska Airlines

Wed 12/3Sat 12/6

SEA - BOI • Non-stop

Cheapest one-way

$65

Typical prices: $123-$218

Frontier

Wed 11/12

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

Wed, Dec 3 - Sat, Dec 6

9:28 pm - 11:50 pmSEA-BOI

1h 22mnonstop

10:00 am - 10:43 amBOI-SEA

1h 43mnonstop

$116Alaska Airlines

Find Deal

Tue, Dec 16 - Tue, Dec 23

5:50 pm - 8:20 pmSEA-BOI

1h 30mnonstop

5:40 am - 6:37 amBOI-SEA

1h 57mnonstop

$117Delta

Find Deal

Wed, Nov 26 - Wed, Dec 3

6:08 pm - 8:10 pmPUW-BOI

1h 02mnonstop

4:56 pm - 5:00 pmBOI-PUW

1h 04mnonstop

$117Alaska Airlines

Find Deal

Sat, Nov 22 - Sun, Nov 23

1:35 pm - 3:58 pmSEA-BOI

1h 23mnonstop

6:09 am - 7:01 amBOI-SEA

1h 52mnonstop

$123Hawaiian Airlines

Find Deal

Sat, Nov 22 - Sun, Nov 23

6:40 pm - 9:02 pmSEA-BOI

1h 22mnonstop

4:38 pm - 5:15 pmBOI-SEA

1h 37mnonstop

$124Hawaiian Airlines

Find Deal

Tue, Dec 2 - Thu, Dec 4

12:10 pm - 8:40 pmSEA-BOI

7h 30m1 stop

5:30 pm - 9:50 pmBOI-SEA

5h 20m1 stop

$151Southwest

Find Deal

Fri, Dec 5 - Mon, Dec 8

5:40 am - 3:05 pmSEA-BOI

8h 25m1 stop

5:30 pm - 9:50 pmBOI-SEA

5h 20m1 stop

$154Southwest

Find Deal

Wed, Nov 19 - Sat, Nov 22

6:00 am - 1:44 pmPDX-BOI

6h 44m1 stop

7:00 pm - 12:46 amBOI-PDX

6h 46m1 stop

$190United Airlines

Find Deal

Thu, Apr 23 - Sat, Apr 25

3:41 pm - 9:08 pmPDX-BOI

4h 27m1 stop

1:00 pm - 6:36 pmBOI-PDX

6h 36m1 stop

$203United Airlines

Find Deal

Sat, Nov 22 - Sun, Nov 23

5:20 am - 9:19 amSEA-BOI

2h 59m1 stop

4:38 pm - 5:15 pmBOI-SEA

1h 37mnonstop

$222Multiple Airlines

Find Deal

Useful Info

Low season	January
High season	December
Cheapest flight	$65

Best time to beat the crowds with an average 10% drop in price.

Most popular time to fly with an average 21% increase in price.

Flight from Seattle to Boise

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.

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)

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.

BOI

$65 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