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$109+ Cheap flights from Idaho Falls to Seattle (IDA - SEA)

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 4/26. Fares are subject to change and may not be available on all flights or dates of travel.
IDA — SEA
Feb 27 — Mar 61
Thu 2/27
Thu 3/6
1 adult, Economy
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The best prices from Idaho Falls Fanning Field to Seattle/Tacoma Intl are usually found in October or April, booked 65 days in advance, depart on a Saturday or Thursday and return on a Thursday

Cheap flight deals from Idaho Falls to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Idaho Falls (IDA) to Seattle (SEA). 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 February 22, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$177
(Alaska Airlines)

One-way from

$109
(Alaska Airlines)

Popular in

August

Cheapest in

October

Average price

$283

Good round-trip deal

$345 or less

Good one-way deal

$179 or less
Provider with most accurate pricing for Idaho Falls Fanning Field-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Idaho Falls Fanning Field-Seattle/Tacoma Intl flights.
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From Idaho Falls Fanning Field to Seattle/Tacoma Intl
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One-way flight from Idaho Falls Fanning Field to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 11% potential increase in price ($42 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($6 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Price to beat on a round-trip flight from Idaho Falls Fanning Field to Seattle/Tacoma Intl.
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Price to beat on a one-way flight from Idaho Falls Fanning Field to Seattle/Tacoma Intl.
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Find flight deals from Idaho Falls to Seattle

Cheapest flights from Idaho Falls to Seattle
Explore the most affordable flight options available from Idaho Falls to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 22, 2025.

This Alaska Airlines deal was found by Cheapflights users on 2/21. 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 4/296:00 amIDA - SEA
Nonstop1h 51mAlaska Airlines
Tue 5/67:55 pmSEA - IDA
Nonstop1h 41mAlaska Airlines
Deal found 2/21$177
This Delta deal was found by Cheapflights users on 2/21. 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 4/306:55 pmIDA - SEA
1 stop6h 07mDelta
Tue 5/61:30 pmSEA - IDA
1 stop3h 45mDelta
Deal found 2/21$197
This Hawaiian Airlines deal was found by Cheapflights users on 2/21. 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 3/84:07 pmIDA - SEA
Nonstop1h 53mHawaiian Airlines
Wed 3/1212:54 pmSEA - IDA
Nonstop1h 36mHawaiian Airlines
Deal found 2/21$298
This United deal was found by Cheapflights users on 2/21. 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.
Fri 4/184:15 pmIDA - SEA
1 stop6h 44mMultiple Airlines
Mon 4/217:55 pmSEA - IDA
Nonstop1h 40mMultiple Airlines
Deal found 2/21$531
This United Airlines deal was found by Cheapflights users on 2/21. 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.
Fri 3/215:48 pmIDA - SEA
1 stop25h 17mUnited Airlines
Fri 3/283:45 pmSEA - IDA
1 stop22h 48mUnited Airlines
Deal found 2/21$551

Find flights from Idaho Falls to Seattle within your budget

Customize your flight search to find flights from Idaho Falls to Seattle 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 February 22, 2025.

Fly from

Idaho Falls

Fly to

Seattle

Route

Depart

Return

Price

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Tue 4/29

4:35 pm-5:27 pm

Nonstop1h 52m

Seattle/Tacoma Intl

Wed 5/7

1:17 pm-3:58 pm

Nonstop1h 41m

$177

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Wed 4/30

6:55 pm-12:02 am

1 stop6h 07m

Seattle/Tacoma Intl

Tue 5/6

1:30 pm-6:15 pm

1 stop3h 45m

$197

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Sat 3/8

4:07 pm-5:00 pm

Nonstop1h 53m

Seattle/Tacoma Intl

Wed 3/12

12:54 pm-3:30 pm

Nonstop1h 36m

$298

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Fri 4/18

4:15 pm-9:59 pm

1 stop6h 44m

Seattle/Tacoma Intl

Mon 4/21

7:55 pm-10:35 pm

Nonstop1h 40m

$531

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Fri 3/21

5:48 pm-6:05 pm

1 stop25h 17m

Seattle/Tacoma Intl

Fri 3/28

3:45 pm-3:33 pm

1 stop22h 48m

$551

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Sat 4/26

4:35 pm-5:27 pm

Nonstop1h 52m

$109

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Tue 5/20

7:00 pm-11:59 pm

1 stop5h 59m

$150

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Tue 5/20

5:00 am-12:59 am

2 stops20h 59m

$287

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Compare providers for flights from Idaho Falls to Seattle

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 Idaho Falls to Seattle in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
CheapTicketsDealPrice Accuracy3 starsTrust Score*3 stars

*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 Idaho Falls-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Idaho Falls-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Idaho Falls-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Idaho Falls-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub 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 Idaho Falls-Seattle 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 Idaho Falls to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle 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.

Travel insights for flights from Idaho Falls to Seattle

Get recent, data-driven insights about flights from Idaho Falls to Seattle including ideal travel times, pricing trends, and more.

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

Use this chart to determine the optimal time to book a round-trip flight from Idaho Falls to Seattle. Price data was last updated on February 14, 2025.

The best time to book flights from Idaho Falls to Seattle is 65 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

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

Currently, January is the cheapest month in which you can book a flight from Idaho Falls to Seattle (average of $238). Flying from Idaho Falls to Seattle 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 SEA?

Find hourly flight availability from Idaho Falls to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 22, 2025.

A simple way to save on the total cost of your ticket is to fly from Idaho Falls to Seattle in the afternoon. If you’re flexible enough to do this you can expect to save up to 55% on your trip compared to booking a flight in the morning.

Weekly flight availability from Idaho Falls to Seattle

Explore weekly flight availability from Idaho Falls to Seattle. 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 February 22, 2025.

The most flights from IDA to SEA are scheduled on a Monday (5 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle 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 Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, 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 Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated February 22, 2025.
Read reviews from past customers who have flown Alaska Airlines, Delta and Hawaiian Airlines from Idaho Falls to Seattle. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,702 reviews

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Alaska Airlines
8.0
Very good
9,702 reviews
Alaska Airlines
8.0
Very good
9,702 reviews

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Delta
8.0
Very good
8,203 reviews
Alaska Airlines
8.0
Very good
9,702 reviews

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Hawaiian Airlines
7.9
Good
2,314 reviews
Alaska Airlines
8.0
Very good
9,702 reviews

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

United Airlines
7.4
Good
8,754 reviews
Alaska Airlines
8.0
Very good
9,702 reviews

Overall

8.0

Comfort

7.9

Food

7.1

Boarding

8.2

Crew

8.5

Entertainment

7.1

Reviews

1 / 20

10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

Related info for your journey

Find useful and relevant information for your journey from Idaho Falls to Seattle. 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 Idaho Falls to Seattle?

    Seattle/Tacoma Intl is the airport most travelers will use when flying to Seattle from Idaho Falls Fanning Field. Booking flights from Fanning Field (IDA) to Seattle/Tacoma Intl (SEA) should be relatively easy as there are 4 daily flights to Seattle from 2 different airlines. 1h 50m is how long a flight from Idaho Falls to Seattle/Tacoma Intl will take if you book a nonstop flight.

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

    The Idaho Falls Fanning Field to Seattle/Tacoma Intl flight path was viewed by 36 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 flying from Idaho Falls to Seattle round-trip?

    Alaska Airlines, at $177, was found to be the cheapest airline from Idaho Falls to Seattle.Alternate airlines to your destination round-trip include Delta and Hawaiian Airlines. You may be able to fly from Idaho Falls to Seattle for 44% less than the average price by searching for these airlines.

  • What are the cheapest airlines to fly from Idaho Falls to Seattle 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 $150 one-way.

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

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Idaho Falls to Seattle on time: Qatar Airways (58%), Alaska Airlines (50%), Horizon Air (50%).

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

    Looking for the cheapest flight from Idaho Falls to Seattle? While on average our users pay $379, our data indicates the cheapest price to be $78. The most popular route (Idaho Falls Fanning Field - Seattle/Tacoma Intl), is priced around $197.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Idaho Falls to Seattle (average of $238). Flying from Idaho Falls to Seattle 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

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
SeaTac
Tukwila
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

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Top 2 airlines flying from Idaho Falls to Seattle

Discover the top 2 airlines that operate flights from Idaho Falls to Seattle. 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 February 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$193Average$320FlexibilityNo cancel feeOn-time75%
DeltaCheapest$196Average$496FlexibilityNo cancel feeOn-timeN/A
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