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Idaho Falls

$149+ Cheap flights from Seattle to Idaho Falls (SEA - IDA)

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 10/3. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IDA
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Idaho Falls Fanning Field are usually found in April or May, booked 48 days in advance, depart on a Tuesday or Wednesday and return on a Saturday

Cheap flight deals from Seattle to Idaho Falls

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Idaho Falls (IDA). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated September 11, 2025.

Round-trip from

$197
(Hawaiian Airlines)

One-way from

$149
(Hawaiian Airlines)

Popular in

March

Cheapest in

April

Average price

$328

Good round-trip deal

$373 or less

Good one-way deal

$199 or less
From Seattle/Tacoma Intl to Idaho Falls Fanning Field
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One-way flight from Seattle/Tacoma Intl to Idaho Falls Fanning Field
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High demand for flights, 5% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($11 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Idaho Falls Fanning Field.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Idaho Falls Fanning Field.
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Find flight deals from Seattle to Idaho Falls

Cheapest flights from Seattle to Idaho Falls
Explore the most affordable flight options available from Seattle to Idaho Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 11, 2025.

This Hawaiian Airlines deal was found by Cheapflights users on 9/10. 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 10/147:55 pmSEA - IDA
Nonstop1h 43mHawaiian Airlines
Sat 10/186:00 amIDA - SEA
Nonstop2h 11mHawaiian Airlines
Deal found 9/10$197
This KAYAK deal was found by Cheapflights users on 9/9. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/49:15 pmSEA - IDA
Nonstop1h 44mAlaska Airlines
Sun 11/93:50 pmIDA - SEA
Nonstop2h 04mAlaska Airlines
Deal found 9/9$211
This Alaska Airlines deal was found by Cheapflights users on 9/8. 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 10/37:55 pmSEA - IDA
Nonstop1h 44mAlaska Airlines
Sat 10/44:15 pmIDA - SEA
Nonstop1h 57mAlaska Airlines
Deal found 9/8$227
This Delta deal was found by Cheapflights users on 9/10. 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.
Thu 10/25:45 pmSEA - IDA
1 stop3h 40mDelta
Sat 10/46:51 pmIDA - SEA
1 stop4h 07mDelta
Deal found 9/10$247
This Alaska Airlines deal was found by Cheapflights users on 9/9. 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 10/177:55 pmSEA - IDA
Nonstop1h 43mAlaska Airlines
Sun 10/196:00 amIDA - SEA
Nonstop2h 11mAlaska Airlines
Deal found 9/9$257
This Hawaiian Airlines deal was found by Cheapflights users on 9/10. 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 10/37:55 pmSEA - IDA
Nonstop1h 44mHawaiian Airlines
Tue 10/74:15 pmIDA - SEA
Nonstop1h 57mHawaiian Airlines
Deal found 9/10$258
This Delta deal was found by Cheapflights users on 9/11. 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 11/47:10 amSEA - IDA
1 stop4h 23mDelta
Wed 11/196:57 pmIDA - SEA
1 stop4h 21mDelta
Deal found 9/11$267
This Delta deal was found by Cheapflights users on 9/10. 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 9/305:45 pmSEA - IDA
1 stop3h 40mDelta
Sat 10/46:51 pmIDA - SEA
1 stop4h 07mDelta
Deal found 9/10$277
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/234:26 pmSEA - IDA
1 stop22h 48mMultiple Airlines
Mon 10/277:40 pmIDA - SEA
2 stops17h 33mMultiple Airlines
Deal found 9/9$285
This Delta deal was found by Cheapflights users on 9/9. 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.
Thu 11/275:25 amSEA - IDA
1 stop6h 14mDelta
Tue 12/27:06 pmIDA - SEA
1 stop5h 19mDelta
Deal found 9/9$287
This Alaska Airlines deal was found by Cheapflights users on 9/10. 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.
Thu 10/27:55 pmSEA - IDA
Nonstop1h 44mAlaska Airlines
Tue 10/74:15 pmIDA - SEA
Nonstop1h 57mAlaska Airlines
Deal found 9/10$288

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Idaho Falls 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 September 11, 2025.
Use the filters below to find and compare flights from Seattle to Idaho Falls that are best for you.

Fly from

Seattle

Fly to

Idaho Falls

Route

Depart

Return

Price

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 12/20

9:20 pm-12:06 am

Nonstop1h 46m

Idaho Falls Fanning Field

Sat 12/27

6:00 am-7:20 am

Nonstop2h 20m

$227

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sun 11/16

12:24 pm-3:13 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Sat 11/22

3:14 pm-4:22 pm

Nonstop2h 08m

$257

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 10/3

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Wed 10/8

6:00 am-7:11 am

Nonstop2h 11m

$257

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 10/3

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Tue 10/7

4:15 pm-5:12 pm

Nonstop1h 57m

$258

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 10/4

12:55 pm-3:38 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Tue 10/7

4:15 pm-5:12 pm

Nonstop1h 57m

$258

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 10/3

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Tue 10/7

6:00 am-7:11 am

Nonstop2h 11m

$258

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 11/4

7:10 am-12:33 pm

1 stop4h 23m

Idaho Falls Fanning Field

Wed 11/19

6:57 pm-10:18 pm

1 stop4h 21m

$267

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 12/20

9:20 pm-12:06 am

Nonstop1h 46m

Idaho Falls Fanning Field

Fri 12/26

6:00 am-7:20 am

Nonstop2h 20m

$288

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 10/2

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Tue 10/7

4:15 pm-5:12 pm

Nonstop1h 57m

$288

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 3/10

12:40 pm-3:23 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Wed 3/11

8:00 am-8:59 am

Nonstop1h 59m

$298

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/10

Showing 1-10 of 19 results
1
2

Best time to book a flight from Seattle to Idaho Falls

Have a flexible travel schedule? Discover the best time to fly to Idaho Falls from Seattle 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 Seattle to Idaho Falls

How far ahead should I book a flight from Seattle to Idaho Falls?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Idaho Falls. Price data was last updated on August 29, 2025.

The price you pay for your flight from Seattle to Idaho Falls may vary depending on when you book. For the best chance of a lower fare, look to book 48 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Idaho Falls?

Currently, October is the cheapest month in which you can book a flight from Seattle to Idaho Falls (average of $380). Flying from Seattle to Idaho Falls in December is currently the most expensive (average of $578). 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 SEA to IDA?

Find hourly flight availability from Seattle to Idaho Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 11, 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 28% on flights from Seattle to Idaho Falls by exploring options for tickets in the afternoon.

Reviews of airlines servicing Idaho Falls

Get insights into the airlines that provide service to Idaho Falls. 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 Idaho Falls. Reviews last updated September 11, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Seattle to Idaho Falls have to say. 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
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,960 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,723 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.0

Overall

8.0

Comfort

7.8

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

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

  • What airports do I use to fly from Seattle to Idaho Falls?

    To fly from Seattle to Idaho Falls, you need to book a flight from Seattle/Tacoma Intl (SEA) to Fanning Field (IDA). Nonstop flights to Idaho Falls Fanning Field from Seattle/Tacoma Intl take 1h 43m on average. When it comes time to book airfare, you have a few options: there are 5 outbound flights from Seattle/Tacoma Intl to Fanning Field offered by 3 different airlines.

  • How popular is this Seattle to Idaho Falls flight route?

    Within the past month, 1 users have taken a look at flights from Seattle/Tacoma Intl to Idaho Falls Fanning Field.

  • How long is the flight from Seattle to Idaho Falls?

    Departing from Seattle to Idaho Falls will take you 1h 46m. The distance between Seattle and Idaho Falls is about 565 mi. Generally, flights for this route are nonstop.

  • What are the cheapest airlines flying from Seattle to Idaho Falls round-trip?

    Our cheapest airline available from Seattle to Idaho Falls is Delta. Our recent data shows that you can find tickets from as low as $118 on this airline. Additional options worth looking into are Hawaiian Airlines and Alaska Airlines, starting at $149 and $184 round-trip. Delta is 64% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from Seattle to Idaho Falls one-way?

    One-way options have recently been found by users for as low as $149 on Hawaiian Airlines. Other airlines that offer cheap prices include Alaska Airlines from $149 and Delta from $159 one-way.

  • What are the most reliable airlines from Seattle to Idaho Falls?

    Before booking your flight to Idaho Falls from Seattle, check out the most reliable airlines to get you to your destination on time: Qatar Airways (81%), Alaska Airlines (75%), Horizon Air( 75%).

  • What are the cheapest flights from Seattle to Idaho Falls?

    The cheapest flight price from Seattle to Idaho Falls is $108. On average you can expect to pay $386. The most popular route, (Seattle/Tacoma Intl - Idaho Falls Fanning Field), can usually be booked for $197.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle to Idaho Falls 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 Seattle to Idaho Falls?

    Currently, October is the cheapest month in which you can book a flight from Seattle to Idaho Falls (average of $380). Flying from Seattle to Idaho Falls in December is currently the most expensive (average of $578). 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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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Top 3 airlines flying from Seattle to Idaho Falls

Discover the top 3 airlines that operate flights from Seattle to Idaho Falls. 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 September 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$118Average$567FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$149Average$343FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$184Average$328FlexibilityNo cancel feeOn-time75%

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