How many flights depart from State of Washington to Idaho on average per week?

As of November 2025, 922 flights take off from State of Washington and land in Idaho each week. The most common flight departure day for this route is Mon, with 17% of weekly flights taking off on this day.

What is the cheapest airline that flies from Washington to Idaho?

Delta, Frontier, and Alaska Airlines are the most popular carriers operating from Washington to Idaho

How long is the flight from State of Washington to Idaho?

Flight times from State of Washington to Idaho vary, but if you’re flying out of Spokane and flying into Boise (one of the most popular routes), then the duration is 1h 11m on average. Another popular route from State of Washington to Idaho is flying from Seattle to Boise, which will take roughly 1h 22m. Keep in mind that layovers or delays could extend your travel time.

What airlines fly to Idaho?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Idaho from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 63% of people opting to fly with this airline when traveling to Idaho. Keep in mind that there are 3 different airlines that fly to Idaho on a routine basis, so you have a few additional options to choose from.

How many flights depart from State of Washington to Idaho on average per day?

131 flights are operational daily from State of Washington to Idaho as of November 2025. The most popular departure time for this route is 5:00PM, with 50% of flights per day taking off in the afternoon.

When did momondo last update prices for flights from Washington to Idaho?

Prices for flights from Washington to Idaho are refreshed on a daily basis.

How many operators does momondo search for flights from Washington to Idaho?

The number of operators available for flights from Washington to Idaho is 5 as of November 2025.

How old do you have to be to fly from Washington to Idaho?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Idaho.

What documentation or ID do you need to fly to Idaho?

The required travel and health documents for your Idaho trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$60 Cheap Flights from Washington to Idaho in 2025/26

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Find the cheapest flights from Washington to Idaho

Round-trip

One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

7:10 am - 8:33 amSEA-GEG

1h 23mnonstop

7:10 am - 8:40 amGEG-SEA

1h 30mnonstop

$89Delta

Find Deal

Sun, Dec 14 - Sun, Dec 21

8:10 pm - 10:40 pmSEA-BOI

1h 30mnonstop

6:28 am - 7:13 amBOI-SEA

1h 45mnonstop

$99Alaska Airlines

Find Deal

Fri, Feb 20 - Thu, Feb 26

9:25 am - 10:39 amSEA-GEG

1h 14mnonstop

7:23 pm - 8:50 pmGEG-SEA

1h 27mnonstop

$99Delta

Find Deal

Thu, Dec 18 - Sun, Dec 21

1:30 pm - 4:02 pmSEA-BOI

1h 32mnonstop

9:00 am - 9:57 amBOI-SEA

1h 57mnonstop

$100Delta

Find Deal

Sat, Dec 6 - Sun, Dec 7

11:15 pm - 12:24 amSEA-GEG

1h 09mnonstop

8:47 pm - 10:02 pmGEG-SEA

1h 15mnonstop

$108Alaska Airlines

Find Deal

Sat, Dec 13 - Mon, Dec 15

8:00 am - 10:34 amSEA-BOI

1h 34mnonstop

6:08 am - 7:00 amBOI-SEA

1h 52mnonstop

$113Hawaiian Airlines

Find Deal

Sun, Dec 14 - Sun, Dec 21

6:05 am - 8:18 amGEG-BOI

1h 13mnonstop

9:53 pm - 10:09 pmBOI-GEG

1h 16mnonstop

$127Hawaiian Airlines

Find Deal

Wed, Dec 31 - Wed, Jan 7

7:51 pm - 2:20 pmGEG-IDA

17h 29m1 stop

9:20 pm - 10:29 amIDA-GEG

14h 09m1 stop

$297Allegiant Air

Find Deal

Thu, Dec 18 - Mon, Dec 22

8:40 am - 3:18 pmSEA-JAC

5h 38m1 stop

4:29 pm - 9:15 pmJAC-SEA

5h 46m1 stop

$301United Airlines

Find Deal

Mon, Jan 12 - Fri, Jan 16

5:00 am - 1:22 pmSEA-JAC

7h 22m1 stop

2:30 pm - 9:17 pmJAC-SEA

7h 47m1 stop

$334United Airlines

Find Deal

Sun, Dec 14 - Sun, Dec 21

Alaska Airlines flights from State of Washington to Idaho

Our best Alaska Airlines deals on State of Washington to Idaho flight tickets

Alaska Airlines

Feb 20

SEA9:35 pmSeattle/Tacoma Intl

1h 24m

BOI11:59 pmBoise Air Term. Gowen Fld

Feb 27

BOI6:00 pmBoise Air Term. Gowen Fld

1h 38m

SEA6:38 pmSeattle/Tacoma Intl

$99

Find similar

Alaska Airlines

Dec 13

SEA11:15 pmSeattle/Tacoma Intl

1h 09m

GEG12:24 amSpokane

Dec 15

GEG8:47 pmSpokane

1h 15m

SEA10:02 pmSeattle/Tacoma Intl

$108

Find similar

Alaska Airlines

Dec 25

SEA9:15 pmSeattle/Tacoma Intl

1h 22m

BOI11:37 pmBoise Air Term. Gowen Fld

Jan 1

BOI9:50 pmBoise Air Term. Gowen Fld

1h 45m

SEA10:35 pmSeattle/Tacoma Intl

$117

Find similar

Southwest flights from State of Washington to Idaho

Our best Southwest deals on State of Washington to Idaho flight tickets

Southwest

Dec 6

SEA6:15 amSeattle/Tacoma Intl

5h 40m

1 stop

BOI12:55 pmBoise Air Term. Gowen Fld

Dec 7

BOI5:40 pmBoise Air Term. Gowen Fld

7h 55m

1 stop

SEA12:35 amSeattle/Tacoma Intl

$151

Find similar

Southwest

Jan 17

SEA1:15 pmSeattle/Tacoma Intl

6h 00m

1 stop

BOI8:15 pmBoise Air Term. Gowen Fld

Jan 21

BOI3:35 pmBoise Air Term. Gowen Fld

8h 30m

2 stops

SEA11:05 pmSeattle/Tacoma Intl

$156

Find similar

Southwest

Jan 17

SEA11:40 amSeattle/Tacoma Intl

7h 40m

2 stops

BOI8:20 pmBoise Air Term. Gowen Fld

Jan 21

BOI3:35 pmBoise Air Term. Gowen Fld

8h 30m

2 stops

SEA11:05 pmSeattle/Tacoma Intl

$161

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Sun 12/14

7:10 am-8:33 am

Nonstop1h 23m

Spokane

Sun 12/21

7:10 am-8:40 am

Nonstop1h 30m

$89

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Fri 2/20

8:10 pm-10:40 pm

Nonstop1h 30m

Boise Air Term. Gowen Fld

Thu 2/26

6:28 am-7:13 am

Nonstop1h 45m

$99

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Thu 12/18

9:25 am-10:39 am

Nonstop1h 14m

Spokane

Sun 12/21

7:23 pm-8:50 pm

Nonstop1h 27m

$99

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 12/6

1:30 pm-4:02 pm

Nonstop1h 32m

Boise Air Term. Gowen Fld

Sun 12/7

9:00 am-9:57 am

Nonstop1h 57m

$100

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Sat 12/13

11:15 pm-12:24 am

Nonstop1h 09m

Spokane

Mon 12/15

8:47 pm-10:02 pm

Nonstop1h 15m

$108

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sun 12/14

8:00 am-10:34 am

Nonstop1h 34m

Boise Air Term. Gowen Fld

Sun 12/21

6:08 am-7:00 am

Nonstop1h 52m

$113

SpokaneBoise

GEG - BOI

GEGBOI

Spokane

Wed 12/31

6:05 am-8:18 am

Nonstop1h 13m

Boise Air Term. Gowen Fld

Wed 1/7

9:53 pm-10:09 pm

Nonstop1h 16m

$127

SpokaneIdaho Falls

GEG - IDA

GEGIDA

Spokane

Thu 12/18

7:51 pm-2:20 pm

1 stop17h 29m

Idaho Falls Fanning Field

Mon 12/22

9:20 pm-10:29 am

1 stop14h 09m

$297

SeattleJackson

SEA - JAC

SEAJAC

Seattle/Tacoma Intl

Mon 1/12

8:40 am-3:18 pm

1 stop5h 38m

Jackson Hole

Fri 1/16

4:29 pm-9:15 pm

1 stop5h 46m

$301

SeattleJackson

SEA - JAC

SEAJAC

Seattle/Tacoma Intl

Sun 12/14

5:00 am-1:22 pm

1 stop7h 22m

Jackson Hole

Sun 12/21

2:30 pm-9:17 pm

1 stop7h 47m

$334

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Idaho

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Idaho?

In general, January is the cheapest month to fly from State of Washington to Idaho. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $176. If you don’t want to visit Idaho in January, then you should wait until April to fly from State of Washington, when ticket prices are also cheap, with an average price of $197.

What is the cheapest day to depart on your flight to Idaho?

Our data shows that Saturday is the least expensive day to fly to Idaho. Tickets to fly out on this day can be as low as $200. On the other hand, Sunday is the most expensive day to depart from State of Washington because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $277.

What is the cheapest time of day to depart on your flight to Idaho?

According to our data, the cheapest time of day to fly to Idaho is in the afternoon. momondo users have found flights departing from State of Washington to Idaho in the afternoon for as low as $211. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. In the evening is when there is more demand to fly to Idaho, so prices are often more expensive at around $219 per ticket.

What is the cheapest Washington to Idaho flight route?

Fly from Seattle/Tacoma Intl to Boise Air Term. Gowen Fld for the best Washington - Idaho flight prices

How far in advance should I book a flight to Idaho?

You are more likely to see cheaper flights to Idaho from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho for around $207 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho from State of Washington for as low as $164 on momondo.

What cabin class options are available on Washington to Idaho flights?

There are 4 cabin classes available to choose from on Washington to Idaho flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on State of Washington to Idaho flights?

You could potentially save up to 16% on your flight if you consider stops on a State of Washington to Idaho flight.

Cheap State of Washington to Idaho flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Idaho

Best Price Found	$88
Fastest flight time	1h 01m
Direct flights	Every day
Airports in Idaho	2 airports

The best one-way flight to Idaho from State of Washington in the past 72 hours is $88. The best round-trip flight deal from State of Washington to Idaho found on momondo in the last 72 hours is $127.

The fastest flight from State of Washington to Idaho takes 1h 01m

Direct flights go from State of Washington to Idaho every day.

There are 2 airports near Idaho: Spokane (GEG), Boise Air Term. Gowen Fld (BOI)

Search flight deals

When did momondo last update prices for flights from Washington to Idaho?
Prices for flights from Washington to Idaho are refreshed on a daily basis.
How many operators does momondo search for flights from Washington to Idaho?
The number of operators available for flights from Washington to Idaho is 5 as of November 2025.
How old do you have to be to fly from Washington to Idaho?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Idaho.
What documentation or ID do you need to fly to Idaho?
The required travel and health documents for your Idaho trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Idaho. We recommend that you seek guidance from your airline or a reliable third party such as IATA.
What is the most popular plane model from State of Washington to Idaho?
Based on momondo bookings for flights between State of Washington and Idaho, the leading plane model is Embraer 175, making up 48.45% of the total bookings. Other popular models include Boeing 737-800 Passenger/BBJ2 (winglets) with 15.75%, Boeing 737-900 Passenger/BBJ3 (winglets) with 12.56%, and Embraer 175 (Enhanced Winglets) with 5.94%.

Best airlines flying from State of Washington to Idaho

Compare and see reviews for airlines that fly from State of Washington to Idaho with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $98	Free Cancellation	Rating 7.9 8,006 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $117	Free Cancellation	Rating 7.8 2,809 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $124	Free Cancellation	Rating 8.0 11,309 reviews	Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Idaho?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Washington to Idaho. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Washington to Idaho with flexible booking policies on momondo?

All flight searches from Washington to Idaho on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Washington to Idaho?

momondo provides multiple filters to help you find the best flight to Idaho from Washington. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Washington to Idaho right now. Can momondo alert me if prices change?

Yes. momondo can track prices for Washington to Idaho flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.