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Cheap flights from Seattle to Idaho Falls from $137

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.
Alaska Airlines Logo
12:30 pm - 3:20 pmSEA  Seattle/Tacoma Intl-IDA Idaho Falls Fanning Field
1h 50mnonstop
Alaska Airlines Logo
1:58 pm - 3:04 pmIDA  Idaho Falls Fanning Field-SEA Seattle/Tacoma Intl
2h 06mnonstop
$297Alaska Airlines
Tue, Oct 27 - Sat, Oct 31
Alaska Airlines Logo
12:30 pm - 3:20 pmSEA  Seattle/Tacoma Intl-IDA Idaho Falls Fanning Field
1h 50mnonstop
Alaska Airlines Logo
1:53 pm - 2:57 pmIDA  Idaho Falls Fanning Field-SEA Seattle/Tacoma Intl
2h 04mnonstop
$297Alaska Airlines
Tue, Oct 27 - Sat, Nov 14
Alaska Airlines Logo
12:30 pm - 3:20 pmSEA  Seattle/Tacoma Intl-IDA Idaho Falls Fanning Field
1h 50mnonstop
Alaska Airlines Logo
6:09 am - 7:20 amIDA  Idaho Falls Fanning Field-SEA Seattle/Tacoma Intl
2h 11mnonstop
$297Alaska Airlines
Wed, Oct 28 - Sat, Oct 31
Alaska Airlines Logo
12:30 pm - 3:20 pmSEA  Seattle/Tacoma Intl-IDA Idaho Falls Fanning Field
1h 50mnonstop
Alaska Airlines Logo
3:55 pm - 6:45 pmIDA  Idaho Falls Fanning Field-SEA Seattle/Tacoma Intl
3h 50m1 stop Portland
$307Alaska Airlines
Tue, Oct 27 - Sat, Nov 14
Multiple Airlines Logo
9:13 pm - 1:34 pmSEA  Seattle/Tacoma Intl-IDA Idaho Falls Fanning Field
15h 21m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
7:30 pm - 10:59 amIDA  Idaho Falls Fanning Field-SEA Seattle/Tacoma Intl
16h 29m1 stop Las Vegas Harry Reid Intl
$312Multiple Airlines
Thu, Oct 29 - Mon, Nov 2
Delta Logo
11:05 am - 6:16 pmSEA  Seattle/Tacoma Intl-IDA Idaho Falls Fanning Field
6h 11m1 stop Salt Lake City
Delta Logo
1:05 pm - 4:24 pmIDA  Idaho Falls Fanning Field-SEA Seattle/Tacoma Intl
4h 19m1 stop Salt Lake City
$317Delta
Wed, Oct 28 - Sat, Oct 31
Multiple Airlines Logo
9:13 pm - 1:34 pmSEA  Seattle/Tacoma Intl-IDA Idaho Falls Fanning Field
15h 21m1 stop Las Vegas Harry Reid Intl
Multiple Airlines Logo
7:30 pm - 6:54 pmIDA  Idaho Falls Fanning Field-SEA Seattle/Tacoma Intl
24h 24m2 stops Las Vegas Harry Reid Intl Los Angeles
$318Multiple Airlines
Thu, Oct 29 - Mon, Nov 2
Alaska Airlines Logo
12:30 pm - 3:20 pmSEA  Seattle/Tacoma Intl-IDA Idaho Falls Fanning Field
1h 50mnonstop
Alaska Airlines Logo
6:09 am - 7:20 amIDA  Idaho Falls Fanning Field-SEA Seattle/Tacoma Intl
2h 11mnonstop
$327Alaska Airlines
Sat, Oct 24 - Mon, Oct 26
Alaska Airlines Logo
8:05 pm - 10:54 pmSEA  Seattle/Tacoma Intl-IDA Idaho Falls Fanning Field
1h 49mnonstop
Alaska Airlines Logo
1:53 pm - 2:57 pmIDA  Idaho Falls Fanning Field-SEA Seattle/Tacoma Intl
2h 04mnonstop
$327Alaska Airlines
Sun, Nov 1 - Sat, Nov 14
Alaska Airlines Logo
12:30 pm - 3:20 pmSEA  Seattle/Tacoma Intl-IDA Idaho Falls Fanning Field
1h 50mnonstop
Alaska Airlines Logo
1:53 pm - 2:57 pmIDA  Idaho Falls Fanning Field-SEA Seattle/Tacoma Intl
2h 04mnonstop
$327Alaska Airlines
Sat, Oct 31 - Mon, Nov 2

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Alaska Airlines flights from Seattle to Idaho Falls

Our best Alaska Airlines deals on Seattle to Idaho Falls flight tickets
Alaska Airlines
Oct 27
SEA12:30 pmSeattle/Tacoma Intl
1h 50m
IDA3:20 pmIdaho Falls Fanning Field
Nov 14
IDA1:53 pmIdaho Falls Fanning Field
2h 04m
SEA2:57 pmSeattle/Tacoma Intl
$297
Alaska Airlines
Oct 27
SEA12:30 pmSeattle/Tacoma Intl
1h 50m
IDA3:20 pmIdaho Falls Fanning Field
Nov 14
IDA3:55 pmIdaho Falls Fanning Field
3h 50m
1 stop
SEA6:45 pmSeattle/Tacoma Intl
$307
Alaska Airlines
Oct 24
SEA12:30 pmSeattle/Tacoma Intl
1h 50m
IDA3:20 pmIdaho Falls Fanning Field
Oct 26
IDA6:09 amIdaho Falls Fanning Field
2h 11m
SEA7:20 amSeattle/Tacoma Intl
$327

Delta flights from Seattle to Idaho Falls

Our best Delta deals on Seattle to Idaho Falls flight tickets
Delta
Oct 28
SEA11:05 amSeattle/Tacoma Intl
6h 11m
1 stop
IDA6:16 pmIdaho Falls Fanning Field
Oct 31
IDA1:05 pmIdaho Falls Fanning Field
4h 19m
1 stop
SEA4:24 pmSeattle/Tacoma Intl
$317
Delta
Nov 24
SEA5:35 amSeattle/Tacoma Intl
5h 40m
1 stop
IDA12:15 pmIdaho Falls Fanning Field
Dec 1
IDA6:59 pmIdaho Falls Fanning Field
6h 06m
1 stop
SEA12:05 amSeattle/Tacoma Intl
$362
Delta
Oct 16
SEA5:30 amSeattle/Tacoma Intl
5h 52m
1 stop
IDA12:22 pmIdaho Falls Fanning Field
Oct 19
IDA6:56 pmIdaho Falls Fanning Field
4h 09m
1 stop
SEA10:05 pmSeattle/Tacoma Intl
$377

momondo Fare Finder

 
Use the filters below to find and compare flights from Seattle to Idaho Falls that are best for you.

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Route

Depart

Return

Price

Cheapest round-trip

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Tue 10/27

12:30 pm-3:20 pm

Nonstop1h 50m

Idaho Falls Fanning Field

Sat 10/31

1:58 pm-3:04 pm

Nonstop2h 06m

$297

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Tue 10/27

12:30 pm-3:20 pm

Nonstop1h 50m

Idaho Falls Fanning Field

Sat 11/14

1:53 pm-2:57 pm

Nonstop2h 04m

$297

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Wed 10/28

12:30 pm-3:20 pm

Nonstop1h 50m

Idaho Falls Fanning Field

Sat 10/31

6:09 am-7:20 am

Nonstop2h 11m

$297

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Tue 10/27

12:30 pm-3:20 pm

Nonstop1h 50m

Idaho Falls Fanning Field

Sat 11/14

3:55 pm-6:45 pm

1 stop3h 50m

$307

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Thu 10/29

9:13 pm-1:34 pm

1 stop15h 21m

Idaho Falls Fanning Field

Mon 11/2

7:30 pm-10:59 am

1 stop16h 29m

$312

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Wed 10/28

11:05 am-6:16 pm

1 stop6h 11m

Idaho Falls Fanning Field

Sat 10/31

1:05 pm-4:24 pm

1 stop4h 19m

$317

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Thu 10/29

9:13 pm-1:34 pm

1 stop15h 21m

Idaho Falls Fanning Field

Mon 11/2

7:30 pm-6:54 pm

2 stops24h 24m

$318

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Sat 10/24

12:30 pm-3:20 pm

Nonstop1h 50m

Idaho Falls Fanning Field

Mon 10/26

6:09 am-7:20 am

Nonstop2h 11m

$327
Quickest round-trip

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Sun 11/1

8:05 pm-10:54 pm

Nonstop1h 49m

Idaho Falls Fanning Field

Sat 11/14

1:53 pm-2:57 pm

Nonstop2h 04m

$327

SeattleIdaho Falls

SEA Seattle/Tacoma Intl - IDA Idaho Falls Fanning Field

SEAIDA

Seattle/Tacoma Intl

Sat 10/31

12:30 pm-3:20 pm

Nonstop1h 50m

Idaho Falls Fanning Field

Mon 11/2

1:53 pm-2:57 pm

Nonstop2h 04m

$327

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?

Prices are currently low for flights on this route.

Typical prices usually range from $330 to $620.
The lowest price recently found on this route was $297.

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 Tuesday as prices are generally higher than usual. According to our data, the average ticket price to Idaho Falls on Tuesday is $528.

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 evening because they tend to be around $374. 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 4 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?

No. A direct flight is the cheapest option for a flight between Seattle to Idaho Falls.

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

As of September 2026, prices for Seattle to Idaho Falls flights are approximately 208% 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

$137

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 $137. The best round-trip flight deal from Seattle to Idaho Falls found on momondo in the last 72 hours is $297.
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
Alaska AirlinesPriceFrom $177Free CancellationRating
7.9
12,956 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 8 Alaska Airlines flights for this route in a normal week, average airfare is usually $338 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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