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Cheap flights from Seattle to Idaho Falls from $129

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 5/23. 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
0 bags

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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
8:20 pm - 4:08 pm
SEA
-
IDA
18h 48m
1 stop
Multiple Airlines Logo
10:56 pm - 10:35 am
IDA
-
SEA
12h 39m
1 stop
$216Multiple Airlines
Thu, Jun 4 - Mon, Jun 8
Alaska Airlines Logo
8:00 pm - 10:53 pm
SEA
-
IDA
1h 53mnonstop
Alaska Airlines Logo
6:00 am - 7:03 am
IDA
-
SEA
2h 03mnonstop
$227Alaska Airlines
Sat, Jun 6 - Mon, Jun 8
Alaska Airlines Logo
8:00 pm - 10:53 pm
SEA
-
IDA
1h 53mnonstop
Alaska Airlines Logo
6:00 am - 7:03 am
IDA
-
SEA
2h 03mnonstop
$237Alaska Airlines
Mon, Jun 1 - Mon, Jun 8
Alaska Airlines Logo
8:00 pm - 10:53 pm
SEA
-
IDA
1h 53mnonstop
Alaska Airlines Logo
1:54 pm - 2:56 pm
IDA
-
SEA
2h 02mnonstop
$257Alaska Airlines
Wed, Jun 3 - Sat, Jun 6
Alaska Airlines Logo
8:00 pm - 10:53 pm
SEA
-
IDA
1h 53mnonstop
Alaska Airlines Logo
7:15 am - 8:21 am
IDA
-
SEA
2h 06mnonstop
$267Alaska Airlines
Sun, May 31 - Fri, Aug 7
Alaska Airlines Logo
8:00 pm - 10:53 pm
SEA
-
IDA
1h 53mnonstop
Alaska Airlines Logo
6:00 am - 7:03 am
IDA
-
SEA
2h 03mnonstop
$272Alaska Airlines
Tue, Jun 2 - Sat, Jun 6
Alaska Airlines Logo
8:00 pm - 10:53 pm
SEA
-
IDA
1h 53mnonstop
Alaska Airlines Logo
6:00 am - 7:03 am
IDA
-
SEA
2h 03mnonstop
$282Alaska Airlines
Sun, May 31 - Sun, Jun 7
Alaska Airlines Logo
12:35 pm - 3:26 pm
SEA
-
IDA
1h 51mnonstop
Alaska Airlines Logo
7:15 am - 8:21 am
IDA
-
SEA
2h 06mnonstop
$287Alaska Airlines
Sat, May 30 - Sat, Jun 13
Multiple Airlines Logo
8:13 pm - 10:47 am
SEA
-
IDA
13h 34m
1 stop
Multiple Airlines Logo
5:33 pm - 10:35 am
IDA
-
SEA
18h 02m
1 stop
$289Multiple Airlines
Sun, Aug 23 - Fri, Aug 28
Multiple Airlines Logo
8:13 pm - 10:47 am
SEA
-
IDA
13h 34m
1 stop
Multiple Airlines Logo
8:33 pm - 6:58 pm
IDA
-
SEA
23h 25m
2 stops
$296Multiple Airlines
Sun, Aug 23 - Mon, Aug 31

Alaska Airlines flights from Seattle to Idaho Falls

Our best Alaska Airlines deals on Seattle to Idaho Falls flight tickets
Alaska Airlines
Jun 1
SEA12:35 pmSeattle/Tacoma Intl
1h 51m
IDA3:26 pmIdaho Falls Fanning Field
Jun 6
IDA6:00 amIdaho Falls Fanning Field
2h 03m
SEA7:03 amSeattle/Tacoma Intl
$227
Alaska Airlines
Jun 1
SEA8:00 pmSeattle/Tacoma Intl
1h 53m
IDA10:53 pmIdaho Falls Fanning Field
Jun 8
IDA6:00 amIdaho Falls Fanning Field
2h 03m
SEA7:03 amSeattle/Tacoma Intl
$237
Alaska Airlines
Jun 1
SEA7:05 amSeattle/Tacoma Intl
5h 12m
1 stop
IDA1:17 pmIdaho Falls Fanning Field
Jun 6
IDA4:03 pmIdaho Falls Fanning Field
3h 51m
1 stop
SEA6:54 pmSeattle/Tacoma Intl
$247

Delta flights from Seattle to Idaho Falls

Our best Delta deals on Seattle to Idaho Falls flight tickets
Delta
May 26
SEA7:15 amSeattle/Tacoma Intl
6h 19m
1 stop
IDA2:34 pmIdaho Falls Fanning Field
May 29
IDA6:54 pmIdaho Falls Fanning Field
6h 18m
1 stop
SEA12:12 amSeattle/Tacoma Intl
$317
Delta
May 15
SEA5:45 pmSeattle/Tacoma Intl
3h 57m
1 stop
IDA10:42 pmIdaho Falls Fanning Field
May 24
IDA11:30 amIdaho Falls Fanning Field
6h 14m
1 stop
SEA4:44 pmSeattle/Tacoma Intl
$327
Delta
Jun 6
SEA5:30 amSeattle/Tacoma Intl
4h 17m
1 stop
IDA10:47 amIdaho Falls Fanning Field
Jun 9
IDA7:00 pmIdaho Falls Fanning Field
4h 05m
1 stop
SEA10:05 pmSeattle/Tacoma Intl
$358

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 May 6, 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 6/4

8:20 pm-4:08 pm

1 stop18h 48m

Idaho Falls Fanning Field

Mon 6/8

10:56 pm-10:35 am

1 stop12h 39m

$216

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 6/6

8:00 pm-10:53 pm

Nonstop1h 53m

Idaho Falls Fanning Field

Mon 6/8

6:00 am-7:03 am

Nonstop2h 03m

$227

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Mon 6/1

8:00 pm-10:53 pm

Nonstop1h 53m

Idaho Falls Fanning Field

Mon 6/8

6:00 am-7:03 am

Nonstop2h 03m

$237
Quickest round-trip

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 6/3

8:00 pm-10:53 pm

Nonstop1h 53m

Idaho Falls Fanning Field

Sat 6/6

1:54 pm-2:56 pm

Nonstop2h 02m

$257

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sun 5/31

8:00 pm-10:53 pm

Nonstop1h 53m

Idaho Falls Fanning Field

Fri 8/7

7:15 am-8:21 am

Nonstop2h 06m

$267

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 6/2

8:00 pm-10:53 pm

Nonstop1h 53m

Idaho Falls Fanning Field

Sat 6/6

6:00 am-7:03 am

Nonstop2h 03m

$272

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sun 5/31

8:00 pm-10:53 pm

Nonstop1h 53m

Idaho Falls Fanning Field

Sun 6/7

6:00 am-7:03 am

Nonstop2h 03m

$282

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 5/30

12:35 pm-3:26 pm

Nonstop1h 51m

Idaho Falls Fanning Field

Sat 6/13

7:15 am-8:21 am

Nonstop2h 06m

$287

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sun 8/23

8:13 pm-10:47 am

1 stop13h 34m

Idaho Falls Fanning Field

Fri 8/28

5:33 pm-10:35 am

1 stop18h 02m

$289

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sun 8/23

8:13 pm-10:47 am

1 stop13h 34m

Idaho Falls Fanning Field

Mon 8/31

8:33 pm-6:58 pm

2 stops23h 25m

$296

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 $463.

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 $334. 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

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 May 2026, prices for Seattle to Idaho Falls flights are approximately 28% 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

$163

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 $163. The best round-trip flight deal from Seattle to Idaho Falls found on momondo in the last 72 hours is $272.
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
2,837 reviews
Search Hawaiian Airlines flights
DeltaPriceFrom $118Free CancellationRating
7.9
8,459 reviews
Search Delta flights
Alaska AirlinesPriceFrom $177Free CancellationRating
7.9
12,332 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 $327 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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