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Idaho Falls

$119+ 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 6/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — IDA
Apr 20 — Apr 271
Sun 4/20
Sun 4/27
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Idaho Falls Fanning Field are usually found in April or February, booked 80 days in advance, depart on a Wednesday or Saturday 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 April 15, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$197
(Alaska Airlines)

One-way from

$149
(Alaska Airlines)

Popular in

March

Cheapest in

April

Average price

$231

Good round-trip deal

$238 or less

Good one-way deal

$119 or less
Provider with most accurate pricing for Seattle/Tacoma Intl-Idaho Falls Fanning Field flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Idaho Falls Fanning Field flights.
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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 April 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 April 15, 2025.

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.
Tue 5/137:55 pmSEA - IDA
Nonstop1h 41mAlaska Airlines
Tue 5/204:20 pmIDA - SEA
Nonstop1h 54mAlaska Airlines
Deal found 4/14$197
This Trip.com 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/3012:52 pmSEA - IDA
Nonstop1h 48mMultiple Airlines
Fri 6/64:20 pmIDA - SEA
Nonstop1h 54mMultiple Airlines
Deal found 4/15$218
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.
Thu 6/55:50 pmSEA - IDA
1 stop4h 01mDelta
Sat 6/76:50 pmIDA - SEA
1 stop5h 28mDelta
Deal found 4/15$237
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.
Tue 9/27:55 pmSEA - IDA
Nonstop1h 44mHawaiian Airlines
Fri 9/56:13 amIDA - SEA
Nonstop1h 57mHawaiian Airlines
Deal found 4/15$238
This United 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/133:25 pmSEA - IDA
1 stop17h 07mUnited Airlines
Tue 5/207:00 amIDA - SEA
2 stops18h 59mUnited Airlines
Deal found 4/14$510

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 April 15, 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

Tue 5/13

7:55 pm-10:36 pm

Nonstop1h 41m

Idaho Falls Fanning Field

Tue 5/20

4:20 pm-5:14 pm

Nonstop1h 54m

$197

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 5/30

12:52 pm-3:40 pm

Nonstop1h 48m

Idaho Falls Fanning Field

Fri 6/6

4:20 pm-5:14 pm

Nonstop1h 54m

$218

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 6/5

5:50 pm-10:51 pm

1 stop4h 01m

Idaho Falls Fanning Field

Sat 6/7

6:50 pm-11:18 pm

1 stop5h 28m

$237

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 9/2

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Fri 9/5

6:13 am-7:10 am

Nonstop1h 57m

$238

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 5/13

3:25 pm-9:32 am

1 stop17h 07m

Idaho Falls Fanning Field

Tue 5/20

7:00 am-12:59 am

2 stops18h 59m

$510

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 6/14

5:30 am-10:39 am

1 stop4h 09m

$119

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 5/2

7:55 pm-10:36 pm

Nonstop1h 41m

$149

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 7/19

5:00 am-10:51 pm

2 stops16h 51m

$389

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/15

Compare providers for flights from Seattle to Idaho Falls

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Seattle to Idaho Falls in April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Seattle-Idaho Falls flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Idaho Falls flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Seattle-Idaho Falls flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Idaho Falls flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Seattle-Idaho Falls flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

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 April 11, 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 80 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 July is currently the most expensive (average of $628). 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 April 15, 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 at noon.

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 April 15, 2025.

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

Rainfall in Idaho Falls by month

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

In terms of precipitation, rainfall in Idaho Falls ranges from 0.6 - 2.0 inches per month. May is typically the wettest month, when rainfall can reach 2.0 in. July is typically the driest time to visit Idaho Falls when rainfall is around 0.6 in.

Temperature in Idaho Falls by month

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

If weather is an important factor for your trip to Idaho Falls, 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 69.8 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 23.0 F).

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 April 15, 2025.
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Alaska Airlines
8.0
Very good
9,871 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Delta
8.0
Very good
7,918 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
Hawaiian Airlines
7.9
Good
2,375 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥
United Airlines
7.4
Good
8,658 reviews
Alaska Airlines
8.0
Very good
9,871 reviews

Comfort

7.9

Crew

8.5

Food

7.1

Overall

8.0

Entertainment

7.1

Boarding

8.2

Reviews

1 / 20
8.0
Excellent

Anonymous,Aug 2024

SEA - LAS

Seats were not that comfy especially for someone with big hips 😥

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 35m 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 1 airline.

  • 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 $197 on this airline. Additional options worth looking into are Delta and Hawaiian Airlines, starting at $237 and $238 round-trip. Alaska Airlines is 39% 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 Alaska Airlines. Other airlines that offer cheap prices include Delta from $220 and United Airlines from $438 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: Hawaiian Airlines (80%), Qatar Airways (80%), Alaska Airlines( 78%).

  • 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 $223. 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 July is currently the most expensive (average of $628). 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.

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Top airline flying from Seattle to Idaho Falls

Discover the top airline 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 April 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$178Average$327FlexibilityNo cancel feeOn-time75%

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