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Cheap flights from Idaho Falls to Seattle from $149

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Seattle departing on 11/24. 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 Idaho Falls to Seattle

Cheap round-trip flights

Delta Logo
6:53 pm - 10:22 pmIDA-SEA
4h 29m1 stop
Delta Logo
5:25 am - 12:33 pmSEA-IDA
6h 08m1 stop
$167Delta
Find Deal
Sat, Oct 25 - Mon, Oct 27
Alaska Airlines Logo
3:09 pm - 4:17 pmIDA-SEA
2h 08mnonstop
Alaska Airlines Logo
9:21 pm - 12:07 amSEA-IDA
1h 46mnonstop
$197Alaska Airlines
Find Deal
Wed, Dec 24 - Tue, Dec 30
Alaska Airlines Logo
6:00 am - 7:20 amIDA-SEA
2h 20mnonstop
Alaska Airlines Logo
9:21 pm - 12:07 amSEA-IDA
1h 46mnonstop
$227Alaska Airlines
Find Deal
Tue, Dec 23 - Thu, Dec 25
Hawaiian Airlines Logo
8:00 am - 8:59 amIDA-SEA
1h 59mnonstop
Hawaiian Airlines Logo
12:40 pm - 3:20 pmSEA-IDA
1h 40mnonstop
$228Hawaiian Airlines
Find Deal
Tue, Feb 24 - Tue, Mar 24
Alaska Airlines Logo
6:00 am - 7:20 amIDA-SEA
2h 20mnonstop
Alaska Airlines Logo
9:21 pm - 12:07 amSEA-IDA
1h 46mnonstop
$237Alaska Airlines
Find Deal
Tue, Dec 23 - Wed, Dec 24
Delta Logo
1:05 pm - 5:00 pmIDA-SEA
4h 55m1 stop
Delta Logo
4:55 pm - 10:21 pmSEA-IDA
4h 26m1 stop
$247Delta
Find Deal
Tue, Feb 24 - Tue, Mar 24
Alaska Airlines Logo
6:00 am - 7:20 amIDA-SEA
2h 20mnonstop
Alaska Airlines Logo
11:20 am - 2:06 pmSEA-IDA
1h 46mnonstop
$251Alaska Airlines
Find Deal
Thu, Dec 25 - Thu, Dec 25
Alaska Airlines Logo
6:00 am - 7:20 amIDA-SEA
2h 20mnonstop
Alaska Airlines Logo
11:20 am - 2:06 pmSEA-IDA
1h 46mnonstop
$257Alaska Airlines
Find Deal
Mon, Dec 22 - Fri, Dec 26
Alaska Airlines Logo
6:00 am - 7:20 amIDA-SEA
2h 20mnonstop
Alaska Airlines Logo
9:21 pm - 12:07 amSEA-IDA
1h 46mnonstop
$258Alaska Airlines
Find Deal
Fri, Dec 26 - Tue, Dec 30
Hawaiian Airlines Logo
4:15 pm - 5:12 pmIDA-SEA
1h 57mnonstop
Hawaiian Airlines Logo
7:55 pm - 10:38 pmSEA-IDA
1h 43mnonstop
$328Hawaiian Airlines
Find Deal
Mon, Oct 6 - Fri, Oct 10

Delta flights from Idaho Falls to Seattle

Our best Delta deals on Idaho Falls to Seattle flight tickets
Delta
Oct 25
IDA6:53 pmIdaho Falls Fanning Field
4h 29m
1 stop
SEA10:22 pmSeattle/Tacoma Intl
Oct 27
SEA5:25 amSeattle/Tacoma Intl
6h 08m
1 stop
IDA12:33 pmIdaho Falls Fanning Field
$167
Find similar
Delta
Feb 24
IDA1:05 pmIdaho Falls Fanning Field
4h 55m
1 stop
SEA5:00 pmSeattle/Tacoma Intl
Mar 24
SEA4:55 pmSeattle/Tacoma Intl
4h 26m
1 stop
IDA10:21 pmIdaho Falls Fanning Field
$247
Find similar
Delta
Dec 25
IDA5:55 amIdaho Falls Fanning Field
7h 41m
1 stop
SEA12:36 pmSeattle/Tacoma Intl
Dec 25
SEA4:57 pmSeattle/Tacoma Intl
5h 00m
1 stop
IDA10:57 pmIdaho Falls Fanning Field
$277
Find similar

Alaska Airlines flights from Idaho Falls to Seattle

Our best Alaska Airlines deals on Idaho Falls to Seattle flight tickets
Alaska Airlines
Dec 24
IDA3:09 pmIdaho Falls Fanning Field
2h 08m
SEA4:17 pmSeattle/Tacoma Intl
Dec 30
SEA9:21 pmSeattle/Tacoma Intl
1h 46m
IDA12:07 amIdaho Falls Fanning Field
$197
Find similar
Alaska Airlines
Dec 23
IDA6:00 amIdaho Falls Fanning Field
2h 20m
SEA7:20 amSeattle/Tacoma Intl
Dec 25
SEA9:21 pmSeattle/Tacoma Intl
1h 46m
IDA12:07 amIdaho Falls Fanning Field
$227
Find similar
Alaska Airlines
Dec 23
IDA6:00 amIdaho Falls Fanning Field
2h 20m
SEA7:20 amSeattle/Tacoma Intl
Dec 24
SEA9:21 pmSeattle/Tacoma Intl
1h 46m
IDA12:07 amIdaho Falls Fanning Field
$237
Find similar

momondo Fare Finder

 
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, momondo users made 832,500 searches. Data last updated September 17, 2025.
Use the filters below to find and compare flights from Idaho Falls to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Sat 10/25

6:53 pm-10:22 pm

1 stop4h 29m

Seattle/Tacoma Intl

Mon 10/27

5:25 am-12:33 pm

1 stop6h 08m

$167

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Wed 12/24

3:09 pm-4:17 pm

Nonstop2h 08m

Seattle/Tacoma Intl

Tue 12/30

9:21 pm-12:07 am

Nonstop1h 46m

$197

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Tue 12/23

6:00 am-7:20 am

Nonstop2h 20m

Seattle/Tacoma Intl

Thu 12/25

9:21 pm-12:07 am

Nonstop1h 46m

$227

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Tue 2/24

8:00 am-8:59 am

Nonstop1h 59m

Seattle/Tacoma Intl

Tue 3/24

12:40 pm-3:20 pm

Nonstop1h 40m

$228

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Tue 12/23

6:00 am-7:20 am

Nonstop2h 20m

Seattle/Tacoma Intl

Wed 12/24

9:21 pm-12:07 am

Nonstop1h 46m

$237

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Tue 2/24

1:05 pm-5:00 pm

1 stop4h 55m

Seattle/Tacoma Intl

Tue 3/24

4:55 pm-10:21 pm

1 stop4h 26m

$247

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Thu 12/25

6:00 am-7:20 am

Nonstop2h 20m

Seattle/Tacoma Intl

Thu 12/25

11:20 am-2:06 pm

Nonstop1h 46m

$251

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Mon 12/22

6:00 am-7:20 am

Nonstop2h 20m

Seattle/Tacoma Intl

Fri 12/26

11:20 am-2:06 pm

Nonstop1h 46m

$257

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Fri 12/26

6:00 am-7:20 am

Nonstop2h 20m

Seattle/Tacoma Intl

Tue 12/30

9:21 pm-12:07 am

Nonstop1h 46m

$258

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

Mon 10/6

4:15 pm-5:12 pm

Nonstop1h 57m

Seattle/Tacoma Intl

Fri 10/10

7:55 pm-10:38 pm

Nonstop1h 43m

$328

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 Seattle from

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

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 Idaho Falls and Seattle?

What is the cheapest month to fly to Seattle?

In general, April is the cheapest month to fly from Idaho Falls to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $227. If you don’t want to visit Seattle in April, then you should wait until February to fly from Idaho Falls, when ticket prices are also cheap, with an average price of $238.

What is the cheapest day to depart on your flight to Seattle?

On average, the least expensive day to fly to Seattle from Idaho Falls is on a Saturday. momondo users have found tickets for Saturday departures for as low as $400. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Tuesday is the most expensive day to depart from Idaho Falls because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $504.

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

Flying to Seattle from Idaho Falls in the evening is the least expensive time of day to depart. momondo users have found prices as low as $240 when looking at flights departing in the evening. Flights to Seattle are more costly in the morning, with an average ticket price of $466. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

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

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

How far in advance should I book a flight to Seattle?

You are more likely to see cheaper flights to Seattle from Idaho Falls when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $307 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Idaho Falls for as low as $226 on momondo.

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

There are 4 cabin classes available to choose from on Idaho Falls Fanning Field to Seattle/Tacoma Intl flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

When to book flights from Idaho Falls to Seattle

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

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

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

Best Price Found

$199

Fastest flight time

1h 56m

Direct flights

Every day

Airports in Seattle

1 airport
The best one-way flight to Seattle from Idaho Falls in the past 72 hours is $199. The best round-trip flight deal from Idaho Falls to Seattle found on momondo in the last 72 hours is $376.
The fastest flight from Idaho Falls to Seattle takes 1h 56m
Direct flights go from Idaho Falls to Seattle every day.
There is 1 airport near Seattle: Seattle/Tacoma Intl (SEA)
Search flight deals

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

    The distance between Idaho Falls Fanning Field and Seattle/Tacoma Intl is about 574.1 mi. A reasonable flight in good conditions will take 1h 56m.

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

    Prices for flights from Idaho Falls Fanning Field Airport to Seattle/Tacoma Intl Airport are updated daily.

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho Falls Fanning Field Airport to Seattle/Tacoma Intl Airport.

  • What documentation or ID do you need to fly to Seattle/Tacoma Intl Airport?

    The necessary travel and health documents for your Seattle/Tacoma Intl Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

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

Best airlines flying from Idaho Falls to Seattle

Compare and see reviews for airlines that fly from Idaho Falls to Seattle with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $118Free CancellationRating
7.9
7,961 reviews
Search Delta flights
Hawaiian AirlinesPriceFrom $119Free CancellationRating
7.8
2,729 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $195Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights

  • Alaska Airlines Flights From Idaho Falls to Seattle

    Across 13 Alaska Airlines flights from Idaho Falls to Seattle this week, the average price was $303, with the best Alaska Airlines deals starting from $195 round-trip. 10,000 users have rated Alaska Airlines on momondo, with an average score of 8.0/10.

  • Hawaiian Airlines Flights From Idaho Falls to Seattle

    Hawaiian Airlines (7.8/10 from 2,729 reviews) operates around 14 flights from Idaho Falls to Seattle in any given week. The average Hawaiian Airlines airfare for this route is around $287, with deals from around $119 rare but found on momondo. Referenced prices are for round-trip Idaho Falls to Seattle flight searches in the last 72 hours.

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
Leavenworth
Tacoma
SeaTac
Ocean Shores
Renton
Olympia
Lynnwood
Kent
Marysville
Puyallup
Federal Way
Kirkland
Tukwila
Shoreline
Lakewood
Centralia
Fife
Cle Elum
Redmond
Westport

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Idaho Falls to Seattle. momondo saves you time and could save you money on your trip.

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

All flight searches from Idaho Falls to Seattle on momondo can be filtered to show those which offer flexible booking policies.

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

Once you have performed a search for Idaho Falls to Seattle flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for Idaho Falls to Seattle flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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