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Cheap flights from Seattle to Idaho Falls from $156

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle to Idaho Falls departing on 9/17. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Find the cheapest flights from Seattle to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
7:00 pm - 11:58 am
SEA
-
IDA
15h 58m
1 stop
Multiple Airlines Logo
6:21 pm - 10:00 am
IDA
-
SEA
16h 39m
1 stop
$253Multiple Airlines
Thu, Sep 24 - Mon, Sep 28
Alaska Airlines Logo
8:05 pm - 10:54 pm
SEA
-
IDA
1h 49mnonstop
Alaska Airlines Logo
6:09 am - 7:20 am
IDA
-
SEA
2h 11mnonstop
$277Alaska Airlines
Wed, Oct 21 - Sat, Oct 24
Alaska Airlines Logo
12:45 pm - 3:35 pm
SEA
-
IDA
1h 50mnonstop
Alaska Airlines Logo
4:12 pm - 6:56 pm
IDA
-
SEA
3h 44m
1 stop
$287Alaska Airlines
Wed, Oct 21 - Sat, Oct 24
Alaska Airlines Logo
12:45 pm - 3:35 pm
SEA
-
IDA
1h 50mnonstop
Alaska Airlines Logo
1:46 pm - 2:52 pm
IDA
-
SEA
2h 06mnonstop
$292Alaska Airlines
Thu, Oct 15 - Sat, Oct 24
Alaska Airlines Logo
12:45 pm - 3:35 pm
SEA
-
IDA
1h 50mnonstop
Alaska Airlines Logo
4:12 pm - 6:56 pm
IDA
-
SEA
3h 44m
1 stop
$302Alaska Airlines
Thu, Oct 15 - Sat, Oct 24
Alaska Airlines Logo
12:45 pm - 3:37 pm
SEA
-
IDA
1h 52mnonstop
Alaska Airlines Logo
7:15 am - 8:21 am
IDA
-
SEA
2h 06mnonstop
$307Alaska Airlines
Sat, Aug 1 - Sun, Aug 2
Alaska Airlines Logo
7:50 pm - 10:39 pm
SEA
-
IDA
1h 49mnonstop
Alaska Airlines Logo
1:43 pm - 2:48 pm
IDA
-
SEA
2h 05mnonstop
$309Alaska Airlines
Thu, Jul 9 - Mon, Jul 13
Multiple Airlines Logo
8:53 pm - 4:05 pm
SEA
-
IDA
18h 12m
1 stop
Multiple Airlines Logo
10:54 pm - 11:08 am
IDA
-
SEA
13h 14m
1 stop
$316Multiple Airlines
Thu, Aug 6 - Mon, Aug 10
Alaska Airlines Logo
8:05 pm - 10:54 pm
SEA
-
IDA
1h 49mnonstop
Alaska Airlines Logo
4:12 pm - 6:56 pm
IDA
-
SEA
3h 44m
1 stop
$317Alaska Airlines
Wed, Oct 21 - Sat, Oct 24
Alaska Airlines Logo
7:50 pm - 10:39 pm
SEA
-
IDA
1h 49mnonstop
Alaska Airlines Logo
7:15 am - 8:21 am
IDA
-
SEA
2h 06mnonstop
$322Alaska Airlines
Sat, Jul 25 - Tue, Jul 28

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Delta flights from Seattle to Idaho Falls

Our best Delta deals on Seattle to Idaho Falls flight tickets
Delta
Jul 29
SEA5:30 amSeattle/Tacoma Intl
4h 13m
1 stop
IDA10:43 amIdaho Falls Fanning Field
Aug 8
IDA7:00 pmIdaho Falls Fanning Field
4h 05m
1 stop
SEA10:05 pmSeattle/Tacoma Intl
$327
Delta
Jul 29
SEA5:30 amSeattle/Tacoma Intl
4h 13m
1 stop
IDA10:43 amIdaho Falls Fanning Field
Aug 7
IDA7:00 pmIdaho Falls Fanning Field
5h 59m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
$352
Delta
Jul 8
SEA5:30 amSeattle/Tacoma Intl
4h 13m
1 stop
IDA10:43 amIdaho Falls Fanning Field
Jul 13
IDA7:00 pmIdaho Falls Fanning Field
5h 59m
1 stop
SEA11:59 pmSeattle/Tacoma Intl
$382

Alaska Airlines flights from Seattle to Idaho Falls

Our best Alaska Airlines deals on Seattle to Idaho Falls flight tickets
Alaska Airlines
Oct 21
SEA8:05 pmSeattle/Tacoma Intl
1h 49m
IDA10:54 pmIdaho Falls Fanning Field
Oct 24
IDA6:09 amIdaho Falls Fanning Field
2h 11m
SEA7:20 amSeattle/Tacoma Intl
$277
Alaska Airlines
Oct 21
SEA12:45 pmSeattle/Tacoma Intl
1h 50m
IDA3:35 pmIdaho Falls Fanning Field
Oct 24
IDA4:12 pmIdaho Falls Fanning Field
3h 44m
1 stop
SEA6:56 pmSeattle/Tacoma Intl
$287
Alaska Airlines
Oct 15
SEA12:45 pmSeattle/Tacoma Intl
1h 50m
IDA3:35 pmIdaho Falls Fanning Field
Oct 24
IDA1:46 pmIdaho Falls Fanning Field
2h 06m
SEA2:52 pmSeattle/Tacoma Intl
$292

momondo 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, momondo users made 832,500 searches. Data last updated June 21, 2026.
Use the filters below to find and compare flights from Seattle to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 9/24

7:00 pm-11:58 am

1 stop15h 58m

Idaho Falls Fanning Field

Mon 9/28

6:21 pm-10:00 am

1 stop16h 39m

$253

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 10/21

8:05 pm-10:54 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Sat 10/24

6:09 am-7:20 am

Nonstop2h 11m

$277

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 10/21

12:45 pm-3:35 pm

Nonstop1h 50m

Idaho Falls Fanning Field

Sat 10/24

4:12 pm-6:56 pm

1 stop3h 44m

$287

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 10/15

12:45 pm-3:35 pm

Nonstop1h 50m

Idaho Falls Fanning Field

Sat 10/24

1:46 pm-2:52 pm

Nonstop2h 06m

$292

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 10/15

12:45 pm-3:35 pm

Nonstop1h 50m

Idaho Falls Fanning Field

Sat 10/24

4:12 pm-6:56 pm

1 stop3h 44m

$302

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 8/1

12:45 pm-3:37 pm

Nonstop1h 52m

Idaho Falls Fanning Field

Sun 8/2

7:15 am-8:21 am

Nonstop2h 06m

$307
Quickest round-trip

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 7/9

7:50 pm-10:39 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Mon 7/13

1:43 pm-2:48 pm

Nonstop2h 05m

$309

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 8/6

8:53 pm-4:05 pm

1 stop18h 12m

Idaho Falls Fanning Field

Mon 8/10

10:54 pm-11:08 am

1 stop13h 14m

$316

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 10/21

8:05 pm-10:54 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Sat 10/24

4:12 pm-6:56 pm

1 stop3h 44m

$317

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 7/25

7:50 pm-10:39 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Tue 7/28

7:15 am-8:21 am

Nonstop2h 06m

$322

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from Seattle to Idaho Falls

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the typical price of a round-trip flight between Seattle and Idaho Falls?

What is the cheapest month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $212.

What is the cheapest day to depart on your flight to Idaho Falls?

Our data shows that Thursday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $297. Be sure to avoid booking your departure on a Sunday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Sunday is $448.

What is the cheapest time of day to depart on your flight to Idaho Falls?

Our most recent data shows that the best time of day to fly to Idaho Falls is in the afternoon. Flights from Seattle to Idaho Falls during this time can be as low as $297. Try not to purchase tickets in the morning because they tend to be around $357. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Seattle/Tacoma Intl to Idaho Falls Fanning Field flight route?

Fly from Seattle/Tacoma Intl to Idaho Falls Fanning Field for the best Seattle/Tacoma Intl - Idaho Falls Fanning Field flight prices

What cabin class options are available on Seattle to Idaho Falls flights?

There are 3 cabin classes available to choose from on Seattle to Idaho Falls flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on Seattle to Idaho Falls flights?

You could potentially save up to 19% on your flight if you consider stops on a Seattle to Idaho Falls flight.

How have Seattle to Idaho Falls flight prices changed over time?

As of June 2026, prices for Seattle to Idaho Falls flights are approximately 4% more expensive when compared to flights at the same time last year.

When to book flights from Seattle to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Idaho Falls according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Idaho Falls (SEA to IDA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Idaho Falls

Best Price Found

$208

Fastest flight time

1h 49m

Direct flights

Every day

Airports in Idaho Falls

1 airport
The best one-way flight to Idaho Falls from Seattle in the past 72 hours is $208. The best round-trip flight deal from Seattle to Idaho Falls found on momondo in the last 72 hours is $332.
The fastest flight from Seattle to Idaho Falls takes 1h 49m
Direct flights go from Seattle to Idaho Falls every day.
There is 1 airport in Idaho Falls. From Seattle there are direct flights to Idaho Falls Fanning Field (IDA).
Search flight deals

Frequently asked questions about flying from Seattle to Idaho Falls

  • How far is Seattle/Tacoma Intl to Idaho Falls Fanning Field by plane?

    There are 574.1 mi between Seattle/Tacoma Intl and Idaho Falls Fanning Field. Flights usually cover this in 1h 49m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Idaho Falls Fanning Field Airport?

    Prices for flights from Seattle/Tacoma Intl Airport to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Idaho Falls Fanning Field Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Seattle/Tacoma Intl Airport to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The travel and health documents you'll need for your trip to Idaho Falls Fanning Field Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Idaho Falls Fanning Field Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from Seattle to Idaho Falls?

  • What is the most popular airline from Seattle to Idaho Falls?

Best airlines flying from Seattle to Idaho Falls

Compare and see reviews for airlines that fly from Seattle to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
Hawaiian AirlinesPriceFrom $108Free CancellationRating
7.8
2,827 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $177Free CancellationRating
7.9
12,553 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Seattle to Idaho Falls

    Alaska Airlines flight deals from Seattle to Idaho Falls start from $177 round-trip. Over the 14 Alaska Airlines flights for this route in a normal week, average airfare is usually $328 round-trip - but some users have found much cheaper deals with momondo.

Traveling to a place near Idaho Falls?

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

Why use momondo?

Why should I use momondo to find a flight deal from Seattle to Idaho Falls?

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from Seattle to Idaho Falls. Millions of users trust and use momondo every year so you are in good hands.

Can I find flights from Seattle to Idaho Falls with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for Seattle to Idaho Falls flights to just show those with flexible booking policies.

How can momondo help me find flights from Seattle to Idaho Falls?

Once all potential Seattle to Idaho Falls flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

I’m not ready to book a flight from Seattle to Idaho Falls right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Idaho Falls now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Idaho Falls and let you know when they change.

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