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

As of June 2026, 668 flights take off from State of Washington and land in Idaho each week. The most common flight departure day for this route is Tue, with 18% of weekly flights taking off on this day.

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 68% 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 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 07m on average. Another popular route from State of Washington to Idaho is flying from Seattle to Boise, which will take roughly 1h 30m. Keep in mind that layovers or delays could extend your travel time.

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

Allegiant Air, United Airlines, and Southwest are the most popular carriers operating from Washington to Idaho

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

95 flights are operational daily from State of Washington to Idaho as of June 2026. The most popular departure time for this route is 7:00PM, with 40% 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 June 2026.

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.

$44 Cheap Flights from Washington to Idaho in 2026

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Find the cheapest flights from Washington to Idaho

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:20 pm - 3:00 pm

PDX

IDA

1h 40mnonstop

3:50 pm - 4:26 pm

IDA

PDX

1h 36mnonstop

$88Allegiant Air

Mon, Jul 20 - Mon, Jul 27

12:20 pm - 3:00 pm

PDX

IDA

1h 40mnonstop

3:50 pm - 4:26 pm

IDA

PDX

1h 36mnonstop

$89Allegiant Air

Fri, Jul 10 - Mon, Jul 20

12:25 pm - 3:05 pm

PDX

IDA

1h 40mnonstop

3:55 pm - 4:36 pm

IDA

PDX

1h 41mnonstop

$110Allegiant Air

Mon, Aug 10 - Fri, Aug 14

1:03 pm - 3:30 pm

SEA

BOI

1h 27mnonstop

4:20 pm - 4:56 pm

BOI

SEA

1h 36mnonstop

$197Alaska Airlines

Sat, Sep 12 - Wed, Sep 16

10:17 am - 11:39 am

SEA

GEG

1h 22mnonstop

7:43 pm - 9:00 pm

GEG

SEA

1h 17mnonstop

$197Alaska Airlines

Sat, Oct 10 - Tue, Oct 13

12:20 pm - 3:00 pm

PDX

IDA

1h 40mnonstop

3:57 pm - 4:50 pm

IDA

PDX

1h 53mnonstop

$201Multiple Airlines

Fri, Jul 17 - Sat, Aug 22

12:25 pm - 3:05 pm

PDX

IDA

1h 40mnonstop

3:57 pm - 4:50 pm

IDA

PDX

1h 53mnonstop

$203Multiple Airlines

Mon, Aug 17 - Tue, Aug 25

7:15 am - 9:54 am

SEA

BOI

1h 39mnonstop

5:59 pm - 6:41 pm

BOI

SEA

1h 42mnonstop

$207Delta

Sat, Sep 26 - Sun, Sep 27

5:30 am - 12:06 pm

PDX

BOI

5h 36m

1 stop

8:40 am - 1:18 pm

BOI

PDX

5h 38m

1 stop

$207Delta

Tue, Oct 13 - Sat, Oct 17

5:21 pm - 12:29 pm

PDX

BOI

18h 08m

1 stop

12:24 pm - 5:11 pm

BOI

PDX

5h 47m

1 stop

$235Frontier

Wed, Aug 5 - Sun, Aug 23

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Delta flights from State of Washington to Idaho

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

Delta

Aug 19

SEA12:35 pmSeattle/Tacoma Intl

1h 43m

BOI3:18 pmBoise Air Term. Gowen Fld

Aug 23

BOI3:29 pmBoise Air Term. Gowen Fld

1h 41m

SEA4:10 pmSeattle/Tacoma Intl

$207

Delta

Aug 28

SEA4:10 pmSeattle/Tacoma Intl

1h 38m

BOI6:48 pmBoise Air Term. Gowen Fld

Aug 30

BOI7:28 pmBoise Air Term. Gowen Fld

1h 46m

SEA8:14 pmSeattle/Tacoma Intl

$217

Delta

Aug 19

PDX11:22 amPortland

4h 57m

1 stop

BOI5:19 pmBoise Air Term. Gowen Fld

Aug 27

BOI6:49 amBoise Air Term. Gowen Fld

4h 53m

1 stop

PDX10:42 amPortland

$222

United Airlines flights from State of Washington to Idaho

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

United Airlines

Aug 19

SEA9:05 amSeattle/Tacoma Intl

5h 26m

1 stop

BOI3:31 pmBoise Air Term. Gowen Fld

Aug 20

BOI7:05 pmBoise Air Term. Gowen Fld

5h 21m

1 stop

SEA11:26 pmSeattle/Tacoma Intl

$227

United Airlines

Sep 21

PDX7:00 amPortland

7h 31m

1 stop

BOI3:31 pmBoise Air Term. Gowen Fld

Sep 25

BOI6:50 pmBoise Air Term. Gowen Fld

7h 09m

1 stop

PDX12:59 amPortland

$258

United Airlines

Aug 29

PDX3:43 pmPortland

4h 41m

1 stop

BOI9:24 pmBoise Air Term. Gowen Fld

Sep 1

BOI7:05 pmBoise Air Term. Gowen Fld

4h 40m

1 stop

PDX10:45 pmPortland

$277

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 7/20

12:20 pm-3:00 pm

Nonstop1h 40m

Idaho Falls Fanning Field

Mon 7/27

3:50 pm-4:26 pm

Nonstop1h 36m

$88

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 7/10

12:20 pm-3:00 pm

Nonstop1h 40m

Idaho Falls Fanning Field

Mon 7/20

3:50 pm-4:26 pm

Nonstop1h 36m

$89

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 8/10

12:25 pm-3:05 pm

Nonstop1h 40m

Idaho Falls Fanning Field

Fri 8/14

3:55 pm-4:36 pm

Nonstop1h 41m

$110

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 9/12

1:03 pm-3:30 pm

Nonstop1h 27m

Boise Air Term. Gowen Fld

Wed 9/16

4:20 pm-4:56 pm

Nonstop1h 36m

$197

Quickest round-trip

SeattleSpokane

SEA - GEG

SEAGEG

Seattle/Tacoma Intl

Sat 10/10

10:17 am-11:39 am

Nonstop1h 22m

Spokane

Tue 10/13

7:43 pm-9:00 pm

Nonstop1h 17m

$197

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 7/17

12:20 pm-3:00 pm

Nonstop1h 40m

Idaho Falls Fanning Field

Sat 8/22

3:57 pm-4:50 pm

Nonstop1h 53m

$201

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 8/17

12:25 pm-3:05 pm

Nonstop1h 40m

Idaho Falls Fanning Field

Tue 8/25

3:57 pm-4:50 pm

Nonstop1h 53m

$203

SeattleBoise

SEA - BOI

SEABOI

Seattle/Tacoma Intl

Sat 9/26

7:15 am-9:54 am

Nonstop1h 39m

Boise Air Term. Gowen Fld

Sun 9/27

5:59 pm-6:41 pm

Nonstop1h 42m

$207

PortlandBoise

PDX - BOI

PDXBOI

Portland

Tue 10/13

5:30 am-12:06 pm

1 stop5h 36m

Boise Air Term. Gowen Fld

Sat 10/17

8:40 am-1:18 pm

1 stop5h 38m

$207

PortlandBoise

PDX - BOI

PDXBOI

Portland

Wed 8/5

5:21 pm-12:29 pm

1 stop18h 08m

Boise Air Term. Gowen Fld

Sun 8/23

12:24 pm-5:11 pm

1 stop5h 47m

$235

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, October 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 $59. If you don’t want to visit Idaho in October, then you should wait until September to fly from State of Washington, when ticket prices are also cheap, with an average price of $59.

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 $198. 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 $336.

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 at noon. momondo users have found flights departing from State of Washington to Idaho at noon for as low as $221. 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 afternoon is when there is more demand to fly to Idaho, so prices are often more expensive at around $241 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 from Washington 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 $220 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 $165 on momondo.

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

There are 4 cabin classes available to choose from on State of 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 59% 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	$143
Fastest flight time	0h 53m
Direct flights	Every day
Airports in Idaho	27 airports

The best one-way flight to Idaho from State of Washington in the past 72 hours is $143. The best round-trip flight deal from State of Washington to Idaho found on momondo in the last 72 hours is $287.

The fastest flight from State of Washington to Idaho takes 0h 53m

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

There are 27 airports in Idaho. From State of Washington there are direct flights to Spokane (GEG), Boise Air Term. Gowen Fld (BOI).

Search flight deals

Frequently asked questions about flying from Washington to Idaho

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 June 2026.
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 Boeing 737-800 Passenger/BBJ2 (winglets), making up 34.49% of the total bookings. Other popular models include Embraer 175 with 23.08%, Boeing 737-700 with 11.41%, and Embraer 175 (Enhanced Winglets) with 5.96%.

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 $79	Free Cancellation	Rating 7.8 8,425 reviews	Search Delta flights
Alaska Airlines	PriceFrom $104	Free Cancellation	Rating 7.9 12,562 reviews	Search Alaska Airlines flights
Hawaiian Airlines	PriceFrom $108	Free Cancellation	Rating 7.8 2,826 reviews	Search Hawaiian 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.

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Flights to Dallasfrom $72

Cheap flights from Washington to Idaho from $44

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Idaho departing on 7/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from State of Washington to Idaho

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

What is the cheapest month to fly to Idaho?

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

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

What is the cheapest Washington to Idaho flight route?

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

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

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

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

What airlines fly to Idaho?

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

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

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

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

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Direct flights

Airports in Idaho

Frequently asked questions about flying from Washington to Idaho

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

Why use momondo?

An easier way to manage your Idaho trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Idaho

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