HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Washington

$52+ 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 4/25. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SEA
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho Falls to Washington with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap 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 April 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$107
(Kiwi.com)

One-way from

$52
(Kiwi.com)

Popular in

January

Cheapest in

April

Average price

$222

Good round-trip deal

$298 or less

Good one-way deal

$145 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. 3% potential increase in price ($10 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 April 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

Find 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 April 15, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/14. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/161:17 pmIDA - PDX
Nonstop1h 39mAllegiant Air
Mon 5/261:21 pmPDX - IDA
Nonstop1h 39mAllegiant Air
Deal found 4/14$107
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
Wed 5/286:00 amIDA - SEA
Nonstop1h 50mAlaska Airlines
Tue 6/312:52 pmSEA - IDA
Nonstop1h 48mAlaska Airlines
Deal found 4/14$197
This Delta deal was found by Cheapflights users on 4/14. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/286:50 pmIDA - SEA
1 stop6h 09mDelta
Tue 6/35:50 pmSEA - IDA
1 stop4h 01mDelta
Deal found 4/14$217
This Alaska Airlines deal was found by Cheapflights users on 4/15. 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.
Tue 5/136:00 amIDA - PDX
1 stop4h 56mAlaska Airlines
Tue 5/209:30 amPDX - IDA
1 stop5h 10mAlaska Airlines
Deal found 4/15$280
This Alaska Airlines deal was found by Cheapflights users on 4/14. 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.
Wed 5/146:00 amIDA - GEG
1 stop3h 58mAlaska Airlines
Wed 5/143:06 pmGEG - IDA
1 stop6h 30mAlaska Airlines
Deal found 4/14$296
This Delta deal was found by Cheapflights users on 4/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/36:50 pmIDA - GEG
1 stop5h 48mDelta
Wed 6/115:10 pmGEG - IDA
1 stop3h 52mDelta
Deal found 4/15$297
This Hawaiian Airlines deal was found by Cheapflights users on 4/15. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/96:00 amIDA - PDX
1 stop4h 56mHawaiian Airlines
Tue 5/134:00 pmPDX - IDA
1 stop5h 36mHawaiian Airlines
Deal found 4/15$314
This Hawaiian Airlines deal was found by Cheapflights users on 4/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/144:03 pmIDA - SEA
Nonstop1h 57mHawaiian Airlines
Tue 8/1912:48 pmSEA - IDA
Nonstop1h 35mHawaiian Airlines
Deal found 4/14$328
This Delta deal was found by Cheapflights users on 4/15. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/186:00 amIDA - PDX
1 stop3h 42mDelta
Tue 5/205:35 amPDX - IDA
2 stops5h 15mDelta
Deal found 4/15$329
This Hawaiian Airlines deal was found by Cheapflights users on 4/14. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/296:00 amIDA - GEG
1 stop3h 58mHawaiian Airlines
Sat 5/35:40 pmGEG - IDA
1 stop3h 56mHawaiian Airlines
Deal found 4/14$454
This United Airlines deal was found by Cheapflights users on 4/13. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/285:00 amIDA - SEA
2 stops14h 25mUnited Airlines
Mon 6/25:15 amSEA - IDA
1 stop16h 36mUnited Airlines
Deal found 4/13$510
This United deal was found by Cheapflights users on 4/14. 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 United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/297:05 amIDA - SEA
1 stop10h 53mMultiple Airlines
Wed 6/47:55 pmSEA - IDA
Nonstop1h 39mMultiple Airlines
Deal found 4/14$535

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 April 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 FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 5/16

1:17 pm-1:56 pm

Nonstop1h 39m

Portland

Mon 5/26

1:21 pm-4:00 pm

Nonstop1h 39m

$107

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Wed 5/28

6:00 am-6:50 am

Nonstop1h 50m

Seattle/Tacoma Intl

Wed 6/4

7:55 pm-10:34 pm

Nonstop1h 39m

$197

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Wed 5/28

6:50 pm-11:59 pm

1 stop6h 09m

Seattle/Tacoma Intl

Tue 6/3

5:50 pm-10:51 pm

1 stop4h 01m

$217

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Tue 5/13

6:00 am-9:56 am

1 stop4h 56m

Portland

Tue 5/20

9:30 am-3:40 pm

1 stop5h 10m

$280

Idaho FallsSpokane

IDA - GEG

IDAGEG

Idaho Falls Fanning Field

Wed 5/14

6:00 am-8:58 am

1 stop3h 58m

Spokane

Wed 5/14

3:06 pm-10:36 pm

1 stop6h 30m

$296

Idaho FallsSpokane

IDA - GEG

IDAGEG

Idaho Falls Fanning Field

Tue 6/3

6:50 pm-11:38 pm

1 stop5h 48m

Spokane

Wed 6/11

5:10 pm-10:02 pm

1 stop3h 52m

$297

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Fri 5/9

6:00 am-9:56 am

1 stop4h 56m

Portland

Tue 5/13

4:00 pm-10:36 pm

1 stop5h 36m

$314

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Thu 8/14

4:03 pm-5:00 pm

Nonstop1h 57m

Seattle/Tacoma Intl

Tue 8/19

12:48 pm-3:23 pm

Nonstop1h 35m

$328

Idaho FallsPortland

IDA - PDX

IDAPDX

Idaho Falls Fanning Field

Sun 5/18

6:00 am-8:42 am

1 stop3h 42m

Portland

Tue 5/20

5:35 am-11:50 am

2 stops5h 15m

$329

Idaho FallsSpokane

IDA - GEG

IDAGEG

Idaho Falls Fanning Field

Tue 4/29

6:00 am-8:58 am

1 stop3h 58m

Spokane

Sat 5/3

5:40 pm-10:36 pm

1 stop3h 56m

$454

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/14

Showing 1-10 of 25 results
1
2
3

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, January is the cheapest month in which you can book a flight from Idaho Falls to State of Washington (average of $238). Flying from Idaho Falls to State of Washington in July is currently the most expensive (average of $411). 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 April 15, 2025.

When flying from Idaho Falls to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Idaho Falls to State of Washington

Explore weekly flight availability from Idaho Falls to Washington. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 15, 2025.

The most flights from IDA to USWA are scheduled on a Monday (5 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (4 on average).

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 April 15, 2025.
See what other customers who have flown with Alaska Airlines, Delta and Hawaiian Airlines from Idaho Falls to Washington have to say. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,871 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Alaska Airlines
8.0
Very good
9,871 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Delta
8.0
Very good
7,918 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Hawaiian Airlines
7.9
Good
2,375 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
United Airlines
7.4
Good
8,658 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >
Allegiant Air
7.3
Good
734 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Food

7.1

Crew

8.5

Boarding

8.2

Entertainment

7.1

Comfort

7.9

Overall

8.0

Reviews

1 / 20
4.0
Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

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 46 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

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

    For one-way options, check prices for Allegiant Air. According to our data, you can fly for as low as $52. Users have also found prices from $119 and $129 on Hawaiian 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 Qatar Airways (85%), Alaska Airlines (83%) or Horizon Air (83%) 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 $824, our data shows the cheapest flight currently is $108. When looking at the most popular route, (Idaho Falls Fanning Field - Seattle/Tacoma Intl), you can expect to pay $197 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, January is the cheapest month in which you can book a flight from Idaho Falls to State of Washington (average of $238). Flying from Idaho Falls to State of Washington in July is currently the most expensive (average of $411). 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

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Idaho Falls to Washington

See prices for flight routes from nearby airports that may be better suited for you.
Boise to Las Vegas flights
Boise to Seattle flights
Boise to Denver flights
Spokane to Denver flights
Spokane to Dallas/Fort Worth flights
Boise to Los Angeles flights
Boise to Sky Harbor Intl flights
Spokane to Sky Harbor Intl flights
Boise to San Diego flights
Spokane to Las Vegas flights
Boise to Santa Ana flights
Boise to O'Hare Intl flights
Boise to John F Kennedy Intl flights
Spokane to Minneapolis flights
Spokane to Seattle flights
Boise to Portland flights
Idaho Falls to Seattle flights
Boise to Dallas/Fort Worth flights
Spokane to San Diego flights
Boise to Atlanta flights
Spokane to O'Hare Intl flights
Spokane to Los Angeles flights
Boise to Minneapolis flights
Boise to Orlando flights
Boise to Newark flights
Spokane to Portland flights
Boise to LaGuardia flights
Spokane to Salt Lake City flights
Spokane to Boise flights
Boise to Spokane flights
Spokane to Boston flights
Idaho Falls to Denver flights
Boise to Honolulu flights
Boise to Miami flights
Spokane to John F Kennedy Intl flights
Boise to Austin flights
Jackson to Seattle flights
Boise to Sacramento flights
Boise to Burbank flights
Boise to Pensacola flights
Boise to San Francisco flights
Spokane to Midway flights
Spokane to San Francisco flights
Boise to San Jose flights
Boise to Hobby flights
Spokane to Honolulu flights
Boise to Nashville flights
Spokane to Orlando flights
Spokane to Newark flights
Boise to Boston flights

Top 2 airlines flying from Idaho Falls to Washington

Discover the top 2 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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$118Average$427FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$188Average$442FlexibilityNo cancel feeOn-time75%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.