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$49+ Cheap flights from Idaho Falls (IDA) to Washington

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/5. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SEA
Jan 14 — Jan 211
Wed 1/14
Wed 1/21
1 adult, Economy
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Cheap flight deals from Idaho Falls to Washington

Cheapest flights from Idaho Falls to Washington
Explore the most affordable flight options available from Idaho Falls to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/194:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Mon 12/221:01 pmPDX - IDA
Nonstop1h 35mAllegiant Air
Deal found 12/13$258
This Booking.com deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/194:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Mon 12/2910:01 amPDX - IDA
Nonstop1h 35mAllegiant Air
Deal found 12/12$291
This Kiwi.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Wed 12/243:59 pmPDX - IDA
1 stop24h 07mMultiple Airlines
Deal found 12/13$336
This Kiwi.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/224:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Tue 12/232:29 pmPDX - IDA
2 stops21h 37mMultiple Airlines
Deal found 12/13$347
This Kiwi.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Fri 1/25:30 pmPDX - IDA
1 stop5h 37mMultiple Airlines
Deal found 12/13$377
This Kiwi.com deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/252:43 pmIDA - PDX
1 stop4h 14mMultiple Airlines
Mon 12/2910:01 amPDX - IDA
Nonstop1h 35mMultiple Airlines
Deal found 12/12$384
This Mytrip deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:26 pmIDA - PDX
Nonstop1h 45mAllegiant Air
Fri 1/210:01 amPDX - IDA
Nonstop1h 35mAllegiant Air
Deal found 12/13$401
This Kiwi.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/194:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Wed 12/243:59 pmPDX - IDA
1 stop24h 07mMultiple Airlines
Deal found 12/13$408
This Kiwi.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/194:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Tue 12/232:29 pmPDX - IDA
2 stops21h 37mMultiple Airlines
Deal found 12/13$419
This Kiwi.com deal was found by Cheapflights users on 12/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/194:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Mon 12/297:28 pmPDX - IDA
1 stop3h 39mMultiple Airlines
Deal found 12/12$425
This Kiwi.com deal was found by Cheapflights users on 12/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/291:26 pmIDA - PDX
Nonstop1h 45mMultiple Airlines
Wed 12/319:26 amPDX - IDA
1 stop4h 06mMultiple Airlines
Deal found 12/13$426
This Alaska Airlines deal was found by Cheapflights users on 12/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/266:00 amIDA - SEA
Nonstop2h 20mAlaska Airlines
Sat 1/39:21 pmSEA - IDA
Nonstop1h 46mAlaska Airlines
Deal found 12/14$458

Find flight deals from Idaho Falls to Washington

Keep the following information in mind while searching for Idaho Falls to Washington flight deals. Data was last updated December 15, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$177
(Alaska Airlines)

One-way from

$49
(Mytrip)

Popular in

January

Cheapest in

April

Average price

$338

Good round-trip deal

$338 or less

Good one-way deal

$180 or less
Provider with most accurate pricing for Idaho Falls Fanning Field-Seattle/Tacoma Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Seattle/Tacoma Intl flights.
Search Deals
From Idaho Falls Fanning Field to Washington
Search Deals
One-way flight from Idaho Falls Fanning Field to Washington
Search Deals
Highest demand for flights based on searches. 1% potential increase in price ($4 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
Search Deals
Price to beat on a round-trip flight from Idaho Falls Fanning Field to Washington.
Search Deals
Price to beat on a one-way flight from Idaho Falls Fanning Field to Washington.
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Idaho Falls to Washington that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
Use the filters below to find and compare flights from Idaho Falls to Washington that are best for you.

Fly from

Idaho Falls

Fly to

Washington

Route

Depart

Return

Price

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Wed 1/21

6:58 pm-8:00 pm

Nonstop2h 02m

Seattle/Tacoma Intl

Wed 1/28

3:35 pm-6:18 pm

Nonstop1h 43m

$177

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Sat 1/17

6:58 pm-8:00 pm

Nonstop2h 02m

Seattle/Tacoma Intl

Tue 1/27

3:35 pm-6:18 pm

Nonstop1h 43m

$177

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Sat 1/17

6:58 pm-8:00 pm

Nonstop2h 02m

Seattle/Tacoma Intl

Thu 1/29

3:35 pm-6:18 pm

Nonstop1h 43m

$187

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Fri 1/16

6:58 pm-8:00 pm

Nonstop2h 02m

Seattle/Tacoma Intl

Sat 1/31

8:16 pm-10:59 pm

Nonstop1h 43m

$187

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Sat 2/14

5:20 pm-6:21 pm

Nonstop2h 01m

Seattle/Tacoma Intl

Wed 2/18

8:52 pm-11:36 pm

Nonstop1h 44m

$187

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Fri 1/16

6:58 pm-8:00 pm

Nonstop2h 02m

Seattle/Tacoma Intl

Tue 1/27

3:35 pm-6:18 pm

Nonstop1h 43m

$187

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Sat 3/7

5:20 pm-6:21 pm

Nonstop2h 01m

Seattle/Tacoma Intl

Thu 3/26

7:55 pm-10:35 pm

Nonstop1h 40m

$218

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Sat 1/10

6:58 pm-8:00 pm

Nonstop2h 02m

Seattle/Tacoma Intl

Mon 1/19

3:35 pm-6:18 pm

Nonstop1h 43m

$218

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Tue 1/20

6:58 pm-8:00 pm

Nonstop2h 02m

Seattle/Tacoma Intl

Wed 1/28

8:16 pm-10:59 pm

Nonstop1h 43m

$218

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Tue 1/20

6:58 pm-8:00 pm

Nonstop2h 02m

Seattle/Tacoma Intl

Tue 1/27

8:16 pm-10:59 pm

Nonstop1h 43m

$218

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/13

Showing 1-10 of 55 results
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Best time to book a flight from Idaho Falls to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Idaho Falls with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

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

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

Currently, October is the cheapest month in which you can book a flight from Idaho Falls to State of Washington (average of $112). Flying from Idaho Falls to State of Washington in September is currently the most expensive (average of $206). 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 IDA to WA?

Find hourly flight availability from Idaho Falls to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 15, 2025.

When flying from Idaho Falls to State of Washington, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 50% versus a flight at noon.

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated December 15, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Delta, and Hawaiian Airlines from Idaho Falls to Washington by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,452 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Alaska Airlines
8.0
Very good
11,452 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Delta
7.9
Good
8,008 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.
Hawaiian Airlines
7.8
Good
2,819 reviews
Alaska Airlines
8.0
Very good
11,452 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Overall

8.0

Entertainment

7.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Idaho Falls to Washington?

    Idaho Falls Fanning Field (IDA), located 3.8 mi from the city center, is the airport you fly out of when you book flights from Idaho Falls to Washington.

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

    This flight path from Idaho Falls Fanning Field to Washington was viewed by 48 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 Idaho Falls to State of Washington?

    Airlines like Alaska Airlines and Delta fly from Idaho Falls to State of Washington in about 2h 02m. The time it takes to get you to your destination can typically vary by up to 19h 50m. Airlines will cover a distance of 565 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    For one-way options, check prices for Hawaiian Airlines. According to our data, you can fly for as low as $88. Users have also found prices from $98 and $227 on Alaska Airlines and Delta, respectively.

  • What are the most popular routes from Idaho Falls to State of Washington?

    The most popular route from Idaho Falls to State of Washington is Idaho Falls Fanning Field - Seattle/Tacoma Intl. You may also consider Idaho Falls Fanning Field - Portland or Idaho Falls Fanning Field - Spokane.

  • What are the most reliable airlines from Idaho Falls to State of Washington?

    Consider Horizon Air (88%), Qatar Airways (85%) or Alaska Airlines (85%) when booking your flight. These represent the most reliable airlines when flying from Idaho Falls to State of Washington.

  • What are the cheapest flights from Idaho Falls to State of Washington?

    While on average a flight from Idaho Falls to State of Washington is generally $372, our data shows the cheapest flight currently is $148. When looking at the most popular route, (Idaho Falls Fanning Field - Seattle/Tacoma Intl), you can expect to pay $252 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Idaho Falls to Washington 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 Idaho Falls to State of Washington?

    Currently, October is the cheapest month in which you can book a flight from Idaho Falls to State of Washington (average of $112). Flying from Idaho Falls to State of Washington in September is currently the most expensive (average of $206). 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

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Alternative routes for Idaho Falls to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 3 airlines flying from Idaho Falls to Washington

Discover the top 3 airlines that operate flights from Idaho Falls to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$118Average$375FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$119Average$323FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$187Average$351FlexibilityNo cancel feeOn-time75%

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