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Idaho Falls

$109+ 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 8/27. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IDA
Aug 3 — Aug 101
Sun 8/3
Sun 8/10
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 Wednesday or Tuesday and return on a Thursday

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 July 29, 2025.

Round-trip from

$180
(iWofly)

One-way from

$109
(Alaska Airlines)

Popular in

March

Cheapest in

April

Average price

$355

Good round-trip deal

$328 or less

Good one-way deal

$183 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, 2% potential price rise
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Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
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Average for round-trip flights in July 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 July 29, 2025.

This iWofly deal was found by Cheapflights users on 7/27. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/2012:34 pmSEA - IDA
Nonstop1h 46mAlaska Airlines
Sat 9/276:13 amIDA - SEA
Nonstop1h 57mAlaska Airlines
Deal found 7/27$180
This Hawaiian Airlines deal was found by Cheapflights users on 7/27. 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.
Sat 9/2012:34 pmSEA - IDA
Nonstop1h 46mHawaiian Airlines
Sat 9/276:13 amIDA - SEA
Nonstop1h 57mHawaiian Airlines
Deal found 7/27$187
This Delta deal was found by Cheapflights users on 7/29. 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 8/275:30 amSEA - IDA
1 stop4h 09mDelta
Wed 9/33:00 pmIDA - SEA
1 stop5h 00mDelta
Deal found 7/29$198

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 July 29, 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 9/20

12:34 pm-3:20 pm

Nonstop1h 46m

Idaho Falls Fanning Field

Sat 9/27

6:13 am-7:10 am

Nonstop1h 57m

$180

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 9/20

12:34 pm-3:20 pm

Nonstop1h 46m

Idaho Falls Fanning Field

Sat 9/27

6:13 am-7:10 am

Nonstop1h 57m

$187

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 8/27

5:30 am-10:39 am

1 stop4h 09m

Idaho Falls Fanning Field

Wed 9/3

3:00 pm-7:00 pm

1 stop5h 00m

$198

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 8/27

12:31 pm-3:17 pm

Nonstop1h 46m

$109

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 8/27

7:55 pm-10:39 pm

Nonstop1h 44m

$119

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 9/11

6:31 pm-4:05 pm

2 stops20h 34m

$249

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 8/6

5:30 am-10:34 am

1 stop4h 04m

$254

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 8/27

7:00 am-8:54 pm

2 stops12h 54m

$345

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 July 25, 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 July 29, 2025.

Unlike at noon, 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.

Weekly flight availability from Seattle to Idaho Falls

Explore weekly flight availability from Seattle to Idaho Falls. 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 July 29, 2025.

The most flights from SEA to IDA are scheduled on a Monday (6 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

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 July 29, 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

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

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

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

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
7,979 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

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
2,605 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

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.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Overall

8.0

Boarding

8.1

Entertainment

7.1

Crew

8.5

Comfort

7.8

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.

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

    Our cheapest airline available from Seattle to Idaho Falls is Alaska Airlines. Our recent data shows that you can find tickets from as low as $180 on this airline. Additional options worth looking into are Hawaiian Airlines and Delta, starting at $187 and $198 round-trip. Alaska Airlines is 43% 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 $109 on Alaska Airlines. Other airlines that offer cheap prices include Hawaiian Airlines from $119 and Delta from $254 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: Finnair (94%), Qatar Airways (93%), Alaska Airlines( 84%).

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

    The cheapest flight price from Seattle to Idaho Falls is $139. On average you can expect to pay $308. 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 July 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$187Average$328FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$207Average$277FlexibilityNo cancel feeOn-time85%
DeltaCheapest$382Average$572FlexibilityNo cancel feeOn-timeN/A

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