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 110 per day as of March 2026. The most frequent departure time is 9:00AM, with 44% of daily flights leaving at noon.

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

776 flights are operational weekly from Idaho to State of Washington as of March 2026. The most popular departure day for this route is Sun, with 18% of flights per week taking off on this day.

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 66% 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.

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

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

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 27m and 1h 34m, respectively.

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 March 2026.

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.

$36 Cheap Flights from Idaho to Washington in 2026

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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.

6:39 pm - 7:18 pm

IDA

PDX

1h 39mnonstop

3:09 pm - 5:49 pm

PDX

IDA

1h 40mnonstop

$100Allegiant Air

Fri, Jun 26 - Mon, Jun 29

6:39 pm - 7:18 pm

IDA

PDX

1h 39mnonstop

3:09 pm - 5:49 pm

PDX

IDA

1h 40mnonstop

$124Allegiant Air

Fri, Jun 5 - Mon, Jun 8

5:50 am - 6:14 am

BOI

PDX

1h 24mnonstop

2:50 pm - 5:14 pm

PDX

BOI

1h 24mnonstop

$155Alaska Airlines

Thu, Apr 23 - Mon, Apr 27

3:49 pm - 3:49 pm

BOI

PUW

1h 00mnonstop

4:26 pm - 6:25 pm

PUW

BOI

0h 59mnonstop

$157Alaska Airlines

Thu, Apr 16 - Mon, Apr 20

4:05 pm - 10:55 pm

BOI

GEG

7h 50m

1 stop

2:25 pm - 11:30 pm

GEG

BOI

8h 05m

1 stop

$162Southwest

Tue, Apr 21 - Tue, Apr 28

8:20 am - 9:04 am

BOI

SEA

1h 44mnonstop

1:03 pm - 3:29 pm

SEA

BOI

1h 26mnonstop

$166Hawaiian Airlines

Sat, Apr 18 - Sun, Apr 19

5:15 pm - 11:25 pm

BOI

GEG

7h 10m

1 stop

2:40 pm - 11:20 pm

GEG

BOI

7h 40m

2 stops

$168Southwest

Tue, Apr 21 - Tue, Apr 28

6:04 pm - 6:49 pm

BOI

SEA

1h 45mnonstop

8:27 pm - 10:57 pm

SEA

BOI

1h 30mnonstop

$172Hawaiian Airlines

Thu, Apr 16 - Sun, Apr 19

1:52 pm - 2:40 pm

BOI

SEA

1h 48mnonstop

5:25 pm - 8:00 pm

SEA

BOI

1h 35mnonstop

$177Delta

Fri, Apr 24 - Fri, May 1

6:15 am - 7:36 am

GEG

SEA

1h 21mnonstop

9:55 pm - 11:15 pm

SEA

GEG

1h 20mnonstop

$197Delta

Thu, Apr 23 - Sun, Apr 26

Frontier flights from Idaho to State of Washington

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

Frontier

Apr 16

BOI11:53 amBoise Air Term. Gowen Fld

22h 59m

1 stop

SEA9:52 amSeattle/Tacoma Intl

Apr 18

SEA7:12 pmSeattle/Tacoma Intl

14h 56m

1 stop

BOI11:08 amBoise Air Term. Gowen Fld

$171

Frontier

Apr 16

BOI11:53 amBoise Air Term. Gowen Fld

22h 59m

1 stop

SEA9:52 amSeattle/Tacoma Intl

Apr 18

SEA7:12 pmSeattle/Tacoma Intl

14h 56m

1 stop

BOI11:08 amBoise Air Term. Gowen Fld

$212

Frontier

Apr 12

BOI12:03 pmBoise Air Term. Gowen Fld

24h 34m

1 stop

SEA11:37 amSeattle/Tacoma Intl

Apr 15

SEA8:07 pmSeattle/Tacoma Intl

14h 01m

1 stop

BOI11:08 amBoise Air Term. Gowen Fld

$226

Alaska Airlines flights from Idaho to State of Washington

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

Alaska Airlines

May 6

BOI4:55 pmBoise Air Term. Gowen Fld

0h 59m

PUW4:54 pmPullman Moscow Regional

May 12

PUW5:31 pmPullman Moscow Regional

0h 59m

BOI7:30 pmBoise Air Term. Gowen Fld

$137

Alaska Airlines

Apr 23

BOI5:50 amBoise Air Term. Gowen Fld

1h 24m

PDX6:14 amPortland

Apr 27

PDX2:50 pmPortland

1h 24m

BOI5:14 pmBoise Air Term. Gowen Fld

$155

Alaska Airlines

Apr 16

BOI3:49 pmBoise Air Term. Gowen Fld

1h 00m

PUW3:49 pmPullman Moscow Regional

Apr 20

PUW4:26 pmPullman Moscow Regional

0h 59m

BOI6:25 pmBoise Air Term. Gowen Fld

$157

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 6/26

6:39 pm-7:18 pm

Nonstop1h 39m

Portland

Mon 6/29

3:09 pm-5:49 pm

Nonstop1h 40m

$100

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 6/5

6:39 pm-7:18 pm

Nonstop1h 39m

Portland

Mon 6/8

3:09 pm-5:49 pm

Nonstop1h 40m

$124

BoisePortland

BOI - PDX

BOIPDX

Boise Air Term. Gowen Fld

Thu 4/23

5:50 am-6:14 am

Nonstop1h 24m

Portland

Mon 4/27

2:50 pm-5:14 pm

Nonstop1h 24m

$155

Quickest round-trip

BoisePullman

BOI - PUW

BOIPUW

Boise Air Term. Gowen Fld

Thu 4/16

3:49 pm-3:49 pm

Nonstop1h 00m

Pullman Moscow Regional

Mon 4/20

4:26 pm-6:25 pm

Nonstop0h 59m

$157

BoiseSpokane

BOI - GEG

BOIGEG

Boise Air Term. Gowen Fld

Tue 4/21

4:05 pm-10:55 pm

1 stop7h 50m

Spokane

Tue 4/28

2:25 pm-11:30 pm

1 stop8h 05m

$162

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Sat 4/18

8:20 am-9:04 am

Nonstop1h 44m

Seattle/Tacoma Intl

Sun 4/19

1:03 pm-3:29 pm

Nonstop1h 26m

$166

BoiseSpokane

BOI - GEG

BOIGEG

Boise Air Term. Gowen Fld

Tue 4/21

5:15 pm-11:25 pm

1 stop7h 10m

Spokane

Tue 4/28

2:40 pm-11:20 pm

2 stops7h 40m

$168

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Thu 4/16

6:04 pm-6:49 pm

Nonstop1h 45m

Seattle/Tacoma Intl

Sun 4/19

8:27 pm-10:57 pm

Nonstop1h 30m

$172

BoiseSeattle

BOI - SEA

BOISEA

Boise Air Term. Gowen Fld

Fri 4/24

1:52 pm-2:40 pm

Nonstop1h 48m

Seattle/Tacoma Intl

Fri 5/1

5:25 pm-8:00 pm

Nonstop1h 35m

$177

SpokaneSeattle

GEG - SEA

GEGSEA

Spokane

Thu 4/23

6:15 am-7:36 am

Nonstop1h 21m

Seattle/Tacoma Intl

Sun 4/26

9:55 pm-11:15 pm

Nonstop1h 20m

$197

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 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 $139. 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 $152.

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 $357. 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 $571.

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 $388. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $472 on average. Flights to State of Washington from Idaho in the morning 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 Seattle/Tacoma Intl 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 $181 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 $149 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	$108
Fastest flight time	0h 59m
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 $108. The best round-trip flight deal from Idaho to State of Washington found on momondo in the last 72 hours is $187.

The fastest flight from Idaho to State of Washington takes 0h 59m

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 Pullman Moscow Regional (PUW), 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 March 2026.
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 Boeing 737-800 Passenger/BBJ2 (winglets), representing 29.67% of all bookings. The subsequent popular models are Embraer 175 at 27.49%, Embraer 175 (Enhanced Winglets) at 9.54%, and Boeing 737-900 Passenger/BBJ3 (winglets) at 7.68%.

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
Delta	PriceFrom $97	Free Cancellation	Rating 7.9 8,357 reviews	Search Delta flights
Alaska Airlines	PriceFrom $99	Free Cancellation	Rating 7.9 12,134 reviews	Search Alaska Airlines flights
Hawaiian Airlines	PriceFrom $117	Free Cancellation	Rating 7.8 2,837 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

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Popular cities in Washington

Flights to New Yorkfrom $58

Flights to Los Angelesfrom $53

Flights to Orlandofrom $49

Flights to Miamifrom $53

Flights to Chicagofrom $56

Flights to San Franciscofrom $55

Flights to Las Vegasfrom $35

Flights to Washington, D.C.from $51

Flights to Bostonfrom $76

Flights to Atlantafrom $49

Flights to Dallasfrom $56

Flights to Seattlefrom $80

Cheap flights from Idaho to Washington from $36

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 6/15. 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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Frontier flights from Idaho to State of Washington

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

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

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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?

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

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

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

What is the cheapest airline that flies 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?

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

How long is the flight from 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

Fastest flight time

Direct flights

Airports in 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?

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

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According to popular flight searches on momondo this year

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