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Cheap flights from Seattle to Idaho Falls from $109

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
0 bags

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Find the cheapest flights from Seattle to Idaho Falls (SEA-IDA)

Cheap round-trip flights

Alaska Airlines Logo
7:55 pm - 10:38 pmSEA-IDA
1h 43mnonstop
Alaska Airlines Logo
4:15 pm - 5:12 pmIDA-SEA
1h 57mnonstop
$177Alaska Airlines
Find Deal
Wed, Oct 15 - Wed, Oct 22
Hawaiian Airlines Logo
7:55 pm - 10:39 pmSEA-IDA
1h 44mnonstop
Hawaiian Airlines Logo
6:00 am - 7:11 amIDA-SEA
2h 11mnonstop
$207Hawaiian Airlines
Find Deal
Fri, Oct 3 - Sat, Oct 4
Alaska Airlines Logo
7:55 pm - 10:39 pmSEA-IDA
1h 44mnonstop
Alaska Airlines Logo
3:57 pm - 4:53 pmIDA-SEA
1h 56mnonstop
$208Alaska Airlines
Find Deal
Tue, Sep 16 - Wed, Sep 24
Hawaiian Airlines Logo
7:55 pm - 10:38 pmSEA-IDA
1h 43mnonstop
Hawaiian Airlines Logo
4:15 pm - 5:12 pmIDA-SEA
1h 57mnonstop
$217Hawaiian Airlines
Find Deal
Fri, Oct 17 - Mon, Oct 20
Hawaiian Airlines Logo
7:55 pm - 10:38 pmSEA-IDA
1h 43mnonstop
Hawaiian Airlines Logo
6:00 am - 7:11 amIDA-SEA
2h 11mnonstop
$228Hawaiian Airlines
Find Deal
Fri, Oct 17 - Sun, Oct 19
Delta Logo
5:45 pm - 10:25 pmSEA-IDA
3h 40m1 stop
Delta Logo
6:51 pm - 10:24 pmIDA-SEA
4h 33m1 stop
$237Delta
Find Deal
Tue, Sep 16 - Tue, Sep 23
Hawaiian Airlines Logo
7:55 pm - 10:39 pmSEA-IDA
1h 44mnonstop
Hawaiian Airlines Logo
6:13 am - 7:10 amIDA-SEA
1h 57mnonstop
$238Hawaiian Airlines
Find Deal
Tue, Sep 16 - Tue, Sep 23
Delta Logo
5:45 pm - 10:25 pmSEA-IDA
3h 40m1 stop
Delta Logo
6:51 pm - 10:24 pmIDA-SEA
4h 33m1 stop
$257Delta
Find Deal
Tue, Sep 16 - Wed, Sep 17
Alaska Airlines Logo
12:55 pm - 3:38 pmSEA-IDA
1h 43mnonstop
Alaska Airlines Logo
6:00 am - 7:11 amIDA-SEA
2h 11mnonstop
$258Alaska Airlines
Find Deal
Fri, Oct 10 - Mon, Oct 13
Delta Logo
9:25 am - 10:25 pmSEA-IDA
12h 00m2 stops
Delta Logo
6:51 pm - 10:24 pmIDA-SEA
4h 33m1 stop
$266Delta
Find Deal
Wed, Sep 17 - Tue, Sep 23

Alaska Airlines flights from Seattle to Idaho Falls

Our best Alaska Airlines deals on Seattle to Idaho Falls flight tickets
Alaska Airlines
Oct 15
SEA7:55 pmSeattle/Tacoma Intl
1h 43m
IDA10:38 pmIdaho Falls Fanning Field
Oct 22
IDA4:15 pmIdaho Falls Fanning Field
1h 57m
SEA5:12 pmSeattle/Tacoma Intl
$177
Find similar
Alaska Airlines
Sep 16
SEA7:55 pmSeattle/Tacoma Intl
1h 44m
IDA10:39 pmIdaho Falls Fanning Field
Sep 24
IDA3:57 pmIdaho Falls Fanning Field
1h 56m
SEA4:53 pmSeattle/Tacoma Intl
$208
Find similar
Alaska Airlines
Oct 10
SEA12:55 pmSeattle/Tacoma Intl
1h 43m
IDA3:38 pmIdaho Falls Fanning Field
Oct 13
IDA6:00 amIdaho Falls Fanning Field
2h 11m
SEA7:11 amSeattle/Tacoma Intl
$258
Find similar

Hawaiian Airlines flights from Seattle to Idaho Falls

Our best Hawaiian Airlines deals on Seattle to Idaho Falls flight tickets
Hawaiian Airlines
Oct 3
SEA7:55 pmSeattle/Tacoma Intl
1h 44m
IDA10:39 pmIdaho Falls Fanning Field
Oct 4
IDA6:00 amIdaho Falls Fanning Field
2h 11m
SEA7:11 amSeattle/Tacoma Intl
$207
Find similar
Hawaiian Airlines
Oct 17
SEA7:55 pmSeattle/Tacoma Intl
1h 43m
IDA10:38 pmIdaho Falls Fanning Field
Oct 20
IDA4:15 pmIdaho Falls Fanning Field
1h 57m
SEA5:12 pmSeattle/Tacoma Intl
$217
Find similar
Hawaiian Airlines
Oct 17
SEA7:55 pmSeattle/Tacoma Intl
1h 43m
IDA10:38 pmIdaho Falls Fanning Field
Oct 19
IDA6:00 amIdaho Falls Fanning Field
2h 11m
SEA7:11 amSeattle/Tacoma Intl
$228
Find similar

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 August 18, 2025.
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

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 10/15

7:55 pm-10:38 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Wed 10/22

4:15 pm-5:12 pm

Nonstop1h 57m

$177

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 10/3

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Sat 10/4

6:00 am-7:11 am

Nonstop2h 11m

$207

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 9/16

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Wed 9/24

3:57 pm-4:53 pm

Nonstop1h 56m

$208

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 10/17

7:55 pm-10:38 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Mon 10/20

4:15 pm-5:12 pm

Nonstop1h 57m

$217

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 10/17

7:55 pm-10:38 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Sun 10/19

6:00 am-7:11 am

Nonstop2h 11m

$228

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 9/16

5:45 pm-10:25 pm

1 stop3h 40m

Idaho Falls Fanning Field

Tue 9/23

6:51 pm-10:24 pm

1 stop4h 33m

$237

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 9/16

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Tue 9/23

6:13 am-7:10 am

Nonstop1h 57m

$238

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 9/16

5:45 pm-10:25 pm

1 stop3h 40m

Idaho Falls Fanning Field

Wed 9/17

6:51 pm-10:24 pm

1 stop4h 33m

$257

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 10/10

12:55 pm-3:38 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Mon 10/13

6:00 am-7:11 am

Nonstop2h 11m

$258

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 9/17

9:25 am-10:25 pm

2 stops12h 00m

Idaho Falls Fanning Field

Tue 9/23

6:51 pm-10:24 pm

1 stop4h 33m

$266

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 cheapest month to fly to Idaho Falls?

If you aren’t able to travel to Idaho Falls during the month of September, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $238.

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

Our data shows that Wednesday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $268. 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 $239. Try not to purchase tickets at noon because they tend to be around $328. 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

How far in advance should I book a flight to Idaho Falls?

You are more likely to see cheaper flights to Idaho Falls from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Idaho Falls for around $316 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Idaho Falls from Seattle for as low as $195 on momondo.

What cabin class options are available on Seattle/Tacoma Intl to Idaho Falls Fanning Field flights?

There are 4 cabin classes available to choose from on Seattle/Tacoma Intl to Idaho Falls Fanning Field 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 August 2025, prices for Seattle to Idaho Falls flights are approximately 9% 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

$109

Fastest flight time

1h 43m

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 $109. The best round-trip flight deal from Seattle to Idaho Falls found on momondo in the last 72 hours is $177.
The fastest flight from Seattle to Idaho Falls takes 1h 43m
Direct flights go from Seattle to Idaho Falls every day.
There is 1 airport near Idaho Falls: Idaho Falls Fanning Field (IDA)
Search flight deals

  • 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 43m, 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 $139Free CancellationRating
7.8
2,664 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $185Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $209Free CancellationRating
8.0
7,981 reviews
Search Delta flights

  • Alaska Airlines Flights From Seattle to Idaho Falls

    Alaska Airlines flight deals from Seattle to Idaho Falls start from $185 round-trip. Over the 10 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.

  • Hawaiian Airlines Flights From Seattle to Idaho Falls

    Hawaiian Airlines is also a popular choice for this route. Hawaiian Airlines flight deals for Seattle to Idaho Falls start from as low as $139 round-trip, depending on your selected dates, with average Hawaiian Airlines deals seen on momondo around $277. Hawaiian Airlines operates 10 flights to Idaho Falls from Seattle in an average week. Users have rated it 7.8/10 across 2,664 reviews.

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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