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Idaho

$94+ Cheap flights from Washington to Idaho

SEA — BOI
Dec 10 — Dec 171
Thu 12/10
Thu 12/17
1 adult, Economy
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Cheap flight deals from Washington to Idaho

Cheapest flights from Washington to Idaho

Wed 12/21:00 pm -
1 stop4h 38m
Sat 12/56:35 am -
1 stop6h 40m
Deal found 11/9$187
Mon 12/75:30 am -
1 stop5h 47m
Mon 12/146:59 pm -
1 stop6h 06m
Deal found 11/8$187
Wed 12/162:15 pm -
1 stop8h 00m
Thu 12/174:40 pm -
2 stops8h 10m
Deal found 11/9$192
Wed 12/233:38 pm -
Nonstop1h 02m
Wed 1/133:09 pm -
Nonstop1h 03m
Deal found 11/9$197
Tue 12/225:41 pm -
Nonstop1h 25m
Tue 12/296:00 pm -
Nonstop1h 51m
Deal found 11/7$201
Wed 12/233:38 pm -
Nonstop1h 02m
Mon 1/113:09 pm -
Nonstop1h 03m
Deal found 11/9$212
Wed 12/169:33 am -
1 stop6h 43m
Sat 12/196:09 pm -
1 stop7h 05m
Deal found 11/6$217
Sat 12/269:19 pm -
Nonstop1h 32m
Sat 1/26:15 am -
Nonstop1h 59m
Deal found 11/10$217
Sat 12/127:15 am -
Nonstop1h 41m
Sun 12/137:18 pm -
Nonstop1h 56m
Deal found 11/8$226
Wed 12/94:36 pm -
Nonstop1h 08m
Tue 12/153:00 pm -
Nonstop1h 14m
Deal found 11/8$227
Wed 12/238:39 am -
Nonstop1h 34m
Thu 12/2411:53 am -
Nonstop1h 57m
Deal found 11/9$227
Thu 12/243:38 pm -
Nonstop1h 02m
Mon 1/113:09 pm -
Nonstop1h 03m
Deal found 11/9$227

Find flight deals from Washington to Idaho

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$187
(Delta)

One-way from

$94
(Delta)

Popular in

November

Cheapest in

January

Average price

$346

Good round-trip deal

$227 or less

Good one-way deal

$208 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Boise Air Term. Gowen Fld flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Boise Air Term. Gowen Fld flights.
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From Washington to Idaho
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One-way flight from Washington to Idaho
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($55 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in November 2026
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Price to beat on a round-trip flight from Washington to Idaho.
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Price to beat on a one-way flight from Washington to Idaho.
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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleBoise

SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld

SEABOI

Seattle/Tacoma Intl

Sat 1/9

6:15 am-3:10 pm

1 stop7h 55m

Boise Air Term. Gowen Fld

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$119

SeattleBoise

SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld

SEABOI

Seattle/Tacoma Intl

Sun 2/7

7:00 am-2:52 pm

1 stop6h 52m

Boise Air Term. Gowen Fld

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$129

SeattleBoise

SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld

SEABOI

Seattle/Tacoma Intl

Sun 12/6

8:10 am-12:11 pm

1 stop3h 01m

Boise Air Term. Gowen Fld

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$129

SeattleBoise

SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld

SEABOI

Seattle/Tacoma Intl

Sun 12/6

7:00 am-2:50 pm

1 stop6h 50m

Boise Air Term. Gowen Fld

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$129

SeattleBoise

SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld

SEABOI

Seattle/Tacoma Intl

Fri 1/15

12:50 pm-9:20 pm

1 stop7h 30m

Boise Air Term. Gowen Fld

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$129

SpokaneBoise

GEG Spokane - BOI Boise Air Term. Gowen Fld

GEGBOI

Spokane

Fri 12/25

5:00 am-11:13 am

1 stop5h 13m

Boise Air Term. Gowen Fld

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$134

SpokaneBoise

GEG Spokane - BOI Boise Air Term. Gowen Fld

GEGBOI

Spokane

Thu 1/14

7:23 pm-11:44 pm

1 stop3h 21m

Boise Air Term. Gowen Fld

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$134

SpokaneBoise

GEG Spokane - BOI Boise Air Term. Gowen Fld

GEGBOI

Spokane

Thu 2/4

7:25 pm-1:45 am

1 stop5h 20m

Boise Air Term. Gowen Fld

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$134

SeattleBoise

SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld

SEABOI

Seattle/Tacoma Intl

Fri 1/8

12:45 pm-10:15 pm

2 stops8h 30m

Boise Air Term. Gowen Fld

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$134

SeattleBoise

SEA Seattle/Tacoma Intl - BOI Boise Air Term. Gowen Fld

SEABOI

Seattle/Tacoma Intl

Thu 12/10

11:35 am-9:40 pm

2 stops9h 05m

Boise Air Term. Gowen Fld

Wed 12/31

12:00 am-11:00 pm

Nonstop0h 00m

$134

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/10

Showing 1-10 of 60 resultsSorted by cheapest first
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Best time to book a flight from Washington to Idaho

Have a flexible travel schedule? Discover the best time to fly to Idaho from Washington with our price prediction graph.
Estimated round-trip price

Cheapflights Insights

Everything you need to know about your flight from Washington to Idaho

What is the cheapest month to book a flight from State of Washington to Idaho?

Currently, April is the cheapest month in which you can book a flight from State of Washington to Idaho (average of $198). Flying from State of Washington to Idaho in July is currently the most expensive (average of $350). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from WA to ID?

It’s optimal to fly from State of Washington to Idaho in the evening. By choosing this option you can save up to 14% on the cost of your flight, compared to a flight at noon.

Weekly flight availability from State of Washington to Idaho

The most flights from USWA to USID are scheduled on a Sunday (41 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (7 on average).

How much does it cost to fly round-trip from State of Washington to Idaho?

Airfare is below average for this route at the moment.
State of Washington to Idaho flights typically cost between $237 and $467 in December.
The cheapest round-trip price found within the last 5 days was $201 on Alaska Airlines (Dec 22-Dec 29).

How far ahead should I book a flight from State of Washington to Idaho?

The price you pay for your flight from State of Washington to Idaho may vary depending on when you book. For the best chance of a lower fare, look to book 61 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest day to fly from State of Washington to Idaho?

Travelers seeking maximum savings on their State of Washington to Idaho flight should consider departing on Tuesday at noon when fares are most often at their lowest. Sunday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Idaho

Read through reviews of airlines operating flights from Washington to Idaho, such as Alaska Airlines and Delta. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
7.9
Good
13,158 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

7.9

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Alaska Airlines
7.9
Good
13,158 reviews
Alaska Airlines
7.9
Good
13,158 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

7.9

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.
Delta
7.8
Good
8,701 reviews
Alaska Airlines
7.9
Good
13,158 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Entertainment

7.0

Overall

7.9

Food

7.0

Reviews

1 / 20
2.0
Mediocre

Chris,Aug 2026

GEG - SFO

Our flight was delayed multiple times over the course of the day for a total of almost ten hours. It was supposed to be a two-hour flight from San Francisco to Spokane. It turned into a nightmare of waiting all day in the airport, not knowing whether we would fly or not, whether we would miss my son's wedding and lose the expenses already incurred for car rental and accommodations. The Alaska staff seemed clueless and never gave us any convincing or definitive information. The airline offered food vouchers and discounts on future flights to make up for the trouble. However, the information about these concessions was not timely, nor were the vouchers themselves very useful. We were a family group of four people. The airline decided to give us one food voucher for $96, which is barely enough for four to get a sandwich and a drink each. Only by persistently addressing the airport food retailers were we able to get anything at all. Then, taking the exact opposite approach, the airline sent me, the original purchaser of all four tickets and the only email account they had, four vouchers for $150 each in the names of each of the four passengers. So, any one of us could get a discount on a future flight with Alaska in that amount. But I originally paid for all the tickets. It makes no sense, except to suggest that Alaska chooses the way to distribute vouchers that seems most likely to minimize the probability that they will be utilized. In my opinion, I should be offered a total refund for the ordeal we were forced to endure or at least a discount voucher for the entire $600.

Related info for your journey

  • How popular is this State of Washington to Idaho flight route?

    The Washington to Idaho flight path was viewed by 11 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    There are many flights that can get you from State of Washington to Idaho in 1h 02m. Fly via Delta, Southwest, or Alaska Airlines to get the fastest option. The distance from State of Washington to Idaho is about 224 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from State of Washington to Idaho one-way?

    The cheapest airlines for a one-way flight from State of Washington to Idaho are Delta ($69), Alaska Airlines ($79), and Frontier ($82).

  • Can I find deals for flights from Washington to Idaho that include hotel bookings?

    Yes. In addition to deals on Washington to Idaho flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Washington to Idaho?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Washington to Idaho.

  • Can I find deals for business class flights from Washington to Idaho?

    Yes. Cheapflights offers flight deals from Washington to Idaho by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from State of Washington to Idaho?

    Currently, April is the cheapest month in which you can book a flight from State of Washington to Idaho (average of $198). Flying from State of Washington to Idaho in July is currently the most expensive (average of $350). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from Washington to Idaho

AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$79Average$346FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$108Average$327FlexibilityNo cancel feeOn-time75%

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