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

The number of flights available between Idaho and State of Washington is 98 per day as of December 2025. The most frequent departure time is 1:00PM, with 48% of daily flights leaving at noon.

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

If you’re flying from a popular airport in Idaho, such as Lewiston or Boise, and flying into State of Washington, then you can expect flight times to average 1h 32m and 1h 39m, respectively.

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

691 flights are operational weekly from Idaho to State of Washington as of December 2025. The most popular departure day for this route is Thu, with 23% of flights per week taking off on this day.

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

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

What airlines fly to State of Washington?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to State of Washington from Idaho according to our data. Alaska Airlines is the first choice among our users, with 64% of people opting to fly with this airline when traveling to State of Washington. Keep in mind that there are 3 different airlines that fly to State of Washington on a routine basis, so you have a few additional options to choose from.

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

Prices for flights from Idaho to Washington are updated daily.

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

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

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

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Washington.

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

The required travel and health documents for your Washington 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 Washington. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$64 Cheap Flights from Idaho to Washington in 2025/26

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Round-trip

One-way

Last minute

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Cheap round-trip flights

Enter your travel dates to find the best prices.

9:05 am - 10:28 am

GEG

SEA

1h 23mnonstop

8:17 pm - 9:25 pm

SEA

GEG

1h 08mnonstop

$98Alaska Airlines

Wed, Jan 14 - Sat, Jan 17

9:15 am - 10:14 am

BOI

SEA

1h 59mnonstop

5:45 pm - 8:12 pm

SEA

BOI

1h 27mnonstop

$99Delta

Thu, Jan 15 - Thu, Jan 22

3:40 pm - 4:59 pm

GEG

SEA

1h 19mnonstop

9:30 am - 10:45 am

SEA

GEG

1h 15mnonstop

$99Delta

Fri, Jan 23 - Sun, Jan 25

7:00 am - 10:28 am

BOI

SEA

4h 28m1 stop

4:00 pm - 6:22 pm

SEA

BOI

1h 22mnonstop

$103Hawaiian Airlines

Wed, Jan 21 - Sat, Jan 24

5:00 pm - 5:13 pm

BOI

GEG

1h 13mnonstop

9:20 am - 11:32 am

GEG

BOI

1h 12mnonstop

$108Hawaiian Airlines

Sat, Jan 31 - Sat, Feb 7

9:53 pm - 10:09 pm

BOI

GEG

1h 16mnonstop

9:20 am - 11:32 am

GEG

BOI

1h 12mnonstop

$117Alaska Airlines

Tue, Jan 13 - Tue, Jan 20

6:05 am - 11:45 am

BOI

PDX

6h 40m1 stop

12:55 pm - 6:20 pm

PDX

BOI

4h 25m1 stop

$151Southwest

Fri, Jan 9 - Sun, Jan 11

4:00 pm - 8:30 pm

BOI

PDX

5h 30m1 stop

3:20 pm - 8:15 pm

PDX

BOI

3h 55m1 stop

$154Southwest

Thu, Jan 22 - Sat, Jan 24

4:29 pm - 9:15 pm

JAC

SEA

5h 46m1 stop

6:03 am - 2:26 pm

SEA

JAC

7h 23m1 stop

$231United Airlines

Thu, Jan 15 - Mon, Jan 19

4:27 pm - 10:59 pm

JAC

SEA

7h 32m1 stop

9:00 am - 3:21 pm

SEA

JAC

5h 21m1 stop

$301United Airlines

Sun, Feb 15 - Tue, Feb 24

Southwest flights from Idaho to State of Washington

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

Southwest

Jan 8

BOI5:25 pmBoise Air Term. Gowen Fld

5h 25m

1 stop

SEA9:50 pmSeattle/Tacoma Intl

Jan 12

SEA12:45 pmSeattle/Tacoma Intl

7h 00m

1 stop

BOI8:45 pmBoise Air Term. Gowen Fld

$151

Find similar

Southwest

Jan 22

BOI4:00 pmBoise Air Term. Gowen Fld

5h 30m

1 stop

PDX8:30 pmPortland

Jan 24

PDX3:20 pmPortland

3h 55m

1 stop

BOI8:15 pmBoise Air Term. Gowen Fld

$154

Find similar

Southwest

Jan 8

BOI3:35 pmBoise Air Term. Gowen Fld

8h 00m

1 stop

SEA10:35 pmSeattle/Tacoma Intl

Jan 14

SEA11:20 amSeattle/Tacoma Intl

10h 10m

2 stops

BOI10:30 pmBoise Air Term. Gowen Fld

$156

Find similar

Alaska Airlines flights from Idaho to State of Washington

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

Alaska Airlines

Jan 14

GEG9:05 amSpokane

1h 23m

SEA10:28 amSeattle/Tacoma Intl

Jan 17

SEA8:17 pmSeattle/Tacoma Intl

1h 08m

GEG9:25 pmSpokane

$98

Find similar

Alaska Airlines

Jan 13

BOI9:53 pmBoise Air Term. Gowen Fld

1h 16m

GEG10:09 pmSpokane

Jan 20

GEG9:20 amSpokane

1h 12m

BOI11:32 amBoise Air Term. Gowen Fld

$117

Find similar

Alaska Airlines

Jan 9

BOI1:55 pmBoise Air Term. Gowen Fld

1h 44m

SEA2:39 pmSeattle/Tacoma Intl

Jan 11

SEA9:36 pmSeattle/Tacoma Intl

1h 23m

BOI11:59 pmBoise Air Term. Gowen Fld

$118

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Wed 1/14

9:05 am-10:28 am

Nonstop1h 23m

Seattle/Tacoma Intl

Sat 1/17

8:17 pm-9:25 pm

Nonstop1h 08m

$98

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 1/15

9:15 am-10:14 am

Nonstop1h 59m

Seattle/Tacoma Intl

Thu 1/22

5:45 pm-8:12 pm

Nonstop1h 27m

$99

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Fri 1/23

3:40 pm-4:59 pm

Nonstop1h 19m

Seattle/Tacoma Intl

Sun 1/25

9:30 am-10:45 am

Nonstop1h 15m

$99

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Wed 1/21

7:00 am-10:28 am

1 stop4h 28m

Seattle/Tacoma Intl

Sat 1/24

4:00 pm-6:22 pm

Nonstop1h 22m

$103

BoiseSpokane

BOI - GEG

BOIGEG

Boise Air Term. Gowen Fld

Sat 1/31

5:00 pm-5:13 pm

Nonstop1h 13m

Spokane

Sat 2/7

9:20 am-11:32 am

Nonstop1h 12m

$108

BoiseSpokane

BOI - GEG

BOIGEG

Boise Air Term. Gowen Fld

Tue 1/13

9:53 pm-10:09 pm

Nonstop1h 16m

Spokane

Tue 1/20

9:20 am-11:32 am

Nonstop1h 12m

$117

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Fri 1/9

6:05 am-11:45 am

1 stop6h 40m

Portland

Sun 1/11

12:55 pm-6:20 pm

1 stop4h 25m

$151

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Thu 1/22

4:00 pm-8:30 pm

1 stop5h 30m

Portland

Sat 1/24

3:20 pm-8:15 pm

1 stop3h 55m

$154

JacksonSeattle

JAC - SEA

JACSEA

Jackson Hole

Thu 1/15

4:29 pm-9:15 pm

1 stop5h 46m

Seattle/Tacoma Intl

Mon 1/19

6:03 am-2:26 pm

1 stop7h 23m

$231

JacksonSeattle

JAC - SEA

JACSEA

Jackson Hole

Sun 2/15

4:27 pm-10:59 pm

1 stop7h 32m

Seattle/Tacoma Intl

Tue 2/24

9:00 am-3:21 pm

1 stop5h 21m

$301

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

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 State of Washington?

The month of January is, on average, the cheapest month to fly to State of Washington from Idaho, with most prices found around $159. If you aren’t able to travel to State of Washington during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $177.

What is the cheapest day to depart on your flight to State of Washington?

The cheapest day to depart from Idaho to State of Washington is on a Friday. Travelers who choose to depart for State of Washington on a Friday will often find tickets for as low as $393. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Idaho to State of Washington for around $569.

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

The cheapest time of day to fly to State of Washington is in the evening when flights can be purchased for as low as $381. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $527 on average. Flights to State of Washington from Idaho in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

What is the cheapest Idaho to Washington flight route?

Fly from Boise Air Term. Gowen Fld to Spokane for the best Idaho - Washington flight prices

How far in advance should I book a flight to State of Washington?

You are more likely to see cheaper flights to State of Washington from Idaho when booking weeks ahead of your departure date. In general, you can expect to find flights to State of Washington for around $187 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to State of Washington from Idaho for as low as $161 on momondo.

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

There are 4 cabin classes available to choose from on Idaho to Washington 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 Idaho to State of Washington flights?

No. A direct flight is the cheapest option for a flight between Idaho to State of Washington.

Cheap Idaho to State of Washington flight deals and tips

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

Best Price Found	$118
Fastest flight time	0h 56m
Direct flights	Every day
Airports in State of Washington	96 airports

The best one-way flight to State of Washington from Idaho in the past 72 hours is $118. The best round-trip flight deal from Idaho to State of Washington found on momondo in the last 72 hours is $207.

The fastest flight from Idaho to State of Washington takes 0h 56m

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

There are 96 airports in State of Washington. From Idaho there are direct flights to Portland (PDX), Spokane (GEG), Seattle/Tacoma Intl (SEA).

Search flight deals

When did momondo last update prices for flights from Idaho to Washington?
Prices for flights from Idaho to Washington are updated daily.
How many operators does momondo search for flights from Idaho to Washington?
The number of operators available for flights from Idaho to Washington is 5 as of December 2025.
How old do you have to be to fly from Idaho to Washington?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Idaho to Washington.
What documentation or ID do you need to fly to Washington?
The required travel and health documents for your Washington 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 Washington. 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 Idaho to State of Washington?
momondo data reveals that the most frequently booked plane model on the route from Idaho to State of Washington is Embraer 175, representing 34.48% of all bookings. The subsequent popular models are Boeing 737-800 Passenger/BBJ2 (winglets) at 20.38%, Embraer 175 (Enhanced Winglets) at 8.53%, and Boeing 737-900 Passenger/BBJ3 (winglets) at 8.18%.

Best airlines flying from Idaho to State of Washington

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

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $99	Free Cancellation	Rating 8.0 11,479 reviews	Search Alaska Airlines flights
Delta	PriceFrom $117	Free Cancellation	Rating 7.9 8,009 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $117	Free Cancellation	Rating 7.8 2,820 reviews	Search Hawaiian Airlines flights

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho to Washington for you.

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

Yes. momondo allows you to filter the results for Idaho to Washington flights to just show those with flexible booking policies.

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

Once you have performed a search for Idaho to Washington flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are simply researching potential flights to Washington, momondo offers a useful price alert feature which will track prices for flights to Washington from Idaho and alert you when they change.

An easier way to manage your State of Washington 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.

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Find better results for your trip to Washington

Popular cities in Washington

Flights to New Yorkfrom $45

Flights to Los Angelesfrom $48

Flights to Miamifrom $49

Flights to Chicagofrom $58

Flights to Orlandofrom $40

Flights to San Franciscofrom $58

Flights to Las Vegasfrom $49

Flights to Washington, D.C.from $57

Flights to Bostonfrom $51

Flights to Atlantafrom $46

Flights to Dallasfrom $57

Flights to Seattlefrom $58

Idaho flight routes

Flights from Hailey Sun Valley-Friedman to Seattle/Tacoma Intl

Flights from Idaho Falls Fanning Field to Portland

Flights from Idaho Falls Fanning Field to Las Vegas Harry Reid Intl

Flights from Boise Air Term. Gowen Fld to Seattle/Tacoma Intl

Flights from Boise Air Term. Gowen Fld to Ontario

Flights from Idaho Falls Fanning Field to Santa Ana J. Wayne/Orange Cnty

Cheap flights from Idaho to Washington from $65

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho to Washington departing on 2/1. 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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Big names and deals

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Filter for what you want

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Find the cheapest flights from Idaho to Washington

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Southwest flights from Idaho to State of Washington

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

Alaska Airlines flights from Idaho to State of Washington

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

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Use the filters below to find and compare flights from Idaho to Washington that are best for you.

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

What is the cheapest month to fly to State of Washington?

What is the cheapest day to depart on your flight to State of Washington?

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

What is the cheapest Idaho to Washington flight route?

Fly from Boise Air Term. Gowen Fld to Spokane for the best Idaho - Washington flight prices

How far in advance should I book a flight to State of Washington?

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

There are 4 cabin classes available to choose from on Idaho to Washington 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 Idaho to State of Washington flights?

No. A direct flight is the cheapest option for a flight between Idaho to State of Washington.

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

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

What airlines fly to State of Washington?

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

The number of flights available between Idaho and State of Washington is 98 per day as of December 2025. The most frequent departure time is 1:00PM, with 48% of daily flights leaving at noon.

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

691 flights are operational weekly from Idaho to State of Washington as of December 2025. The most popular departure day for this route is Thu, with 23% of flights per week taking off on this day.

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

If you’re flying from a popular airport in Idaho, such as Lewiston or Boise, and flying into State of Washington, then you can expect flight times to average 1h 32m and 1h 39m, respectively.

Cheap Idaho to State of Washington flight deals and tips

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

Best Price Found

Fastest flight time

Direct flights

Airports in State of Washington

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

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

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

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

What is the most popular plane model from Idaho to State of Washington?

Best airlines flying from Idaho to State of Washington

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

Why use momondo?

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

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

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

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

An easier way to manage your State of Washington 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 Washington

Popular cities in Washington

Popular flights according to clicks in the last 7 days on momondo