What is the cheapest airline that flies from Idaho Falls Fanning Field to Seattle/Tacoma Intl?

Delta, Alaska Airlines, and American Airlines are the most popular carriers operating from Idaho Falls Fanning Field to Seattle/Tacoma Intl

How many flights depart from Idaho Falls to Seattle on average per day?

As of October 2025, 4 flights take off from Idaho Falls and land in Seattle each day. The most common flight departure time for this route is 3:00PM, with 64% of daily flights taking off in the afternoon.

What airlines fly to Seattle?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Seattle from Idaho Falls according to our data. Alaska Airlines is the first choice among our users, with 78% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 3 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

How many flights depart from Idaho Falls to Seattle on average per week?

As of October 2025, 28 flights take off from Idaho Falls and land in Seattle each week. The most common flight departure day for this route is Mon, with 18% of weekly flights taking off on this day.

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?

The number of operators available for flights from Idaho Falls Fanning Field Airport to Seattle/Tacoma Intl Airport is 3 as of October 2025.

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.

$104 Cheap Flights from Idaho Falls to Seattle in 2025/26

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

Prices are currently low for flights on this route. Typical prices usually range from $217 to $518. The lowest price recently found on this route was $167.

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5:07 pm - 6:16 pmIDA-SEA

2h 09mnonstop

1:36 pm - 4:27 pmSEA-IDA

1h 51mnonstop

$167Alaska Airlines

Find Deal

wt., gru 9 - sob., gru 13

9:00 am - 10:10 amIDA-SEA

2h 10mnonstop

8:16 pm - 10:59 pmSEA-IDA

1h 43mnonstop

$175Alaska Airlines

Find Deal

pt., sty 16 - ndz., sty 18

5:07 pm - 6:16 pmIDA-SEA

2h 09mnonstop

9:21 pm - 12:07 amSEA-IDA

1h 46mnonstop

$177Alaska Airlines

Find Deal

wt., gru 9 - czw., gru 18

6:05 am - 7:14 amIDA-SEA

2h 09mnonstop

1:36 pm - 4:27 pmSEA-IDA

1h 51mnonstop

$207Alaska Airlines

Find Deal

sob., gru 13 - sob., gru 13

5:07 pm - 6:16 pmIDA-SEA

2h 09mnonstop

1:36 pm - 4:27 pmSEA-IDA

1h 51mnonstop

$208Alaska Airlines

Find Deal

pt., gru 12 - sob., gru 13

7:06 pm - 11:25 pmIDA-SEA

5h 19m1 stop

5:00 pm - 10:21 pmSEA-IDA

4h 21m1 stop

$227Delta

Find Deal

wt., gru 9 - pt., gru 12

7:06 pm - 12:20 amIDA-SEA

6h 14m1 stop

5:00 pm - 10:21 pmSEA-IDA

4h 21m1 stop

$237Delta

Find Deal

czw., gru 11 - pt., gru 12

8:00 am - 8:59 amIDA-SEA

1h 59mnonstop

7:55 pm - 10:38 pmSEA-IDA

1h 43mnonstop

$298Hawaiian Airlines

Find Deal

wt., mar 17 - śr., mar 18

7:56 pm - 12:07 pmIDA-SEA

17h 11m2 stops

11:43 am - 1:07 pmSEA-IDA

24h 24m1 stop

$311Multiple Airlines

Find Deal

pon., lis 10 - ndz., lis 16

7:56 pm - 12:07 pmIDA-SEA

17h 11m2 stops

7:17 pm - 4:08 pmSEA-IDA

19h 51m1 stop

$369Multiple Airlines

Find Deal

pon., lis 10 - czw., lis 13

Delta flights from Idaho Falls to Seattle

Our best Delta deals on Idaho Falls to Seattle flight tickets

Delta

Dec 9

IDA7:06 pmIdaho Falls Fanning Field

5h 19m

1 stop

SEA11:25 pmSeattle/Tacoma Intl

Dec 12

SEA5:00 pmSeattle/Tacoma Intl

4h 21m

1 stop

IDA10:21 pmIdaho Falls Fanning Field

$227

Find similar

Delta

Dec 11

IDA7:06 pmIdaho Falls Fanning Field

6h 14m

1 stop

SEA12:20 amSeattle/Tacoma Intl

Dec 12

SEA5:00 pmSeattle/Tacoma Intl

4h 21m

1 stop

IDA10:21 pmIdaho Falls Fanning Field

$237

Find similar

Delta

Feb 3

IDA6:35 pmIdaho Falls Fanning Field

6h 34m

1 stop

SEA12:09 amSeattle/Tacoma Intl

Feb 25

SEA4:55 pmSeattle/Tacoma Intl

4h 26m

1 stop

IDA10:21 pmIdaho Falls Fanning Field

$247

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 9

IDA5:07 pmIdaho Falls Fanning Field

2h 09m

SEA6:16 pmSeattle/Tacoma Intl

Dec 13

SEA1:36 pmSeattle/Tacoma Intl

1h 51m

IDA4:27 pmIdaho Falls Fanning Field

$167

Find similar

Alaska Airlines

Jan 16

IDA9:00 amIdaho Falls Fanning Field

2h 10m

SEA10:10 amSeattle/Tacoma Intl

Jan 18

SEA8:16 pmSeattle/Tacoma Intl

1h 43m

IDA10:59 pmIdaho Falls Fanning Field

$175

Find similar

Alaska Airlines

Dec 9

IDA5:07 pmIdaho Falls Fanning Field

2h 09m

SEA6:16 pmSeattle/Tacoma Intl

Dec 18

SEA9:21 pmSeattle/Tacoma Intl

1h 46m

IDA12:07 amIdaho Falls Fanning Field

$177

Find similar

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

wt. 12/9

5:07 pm-6:16 pm

Nonstop2h 09m

Seattle/Tacoma Intl

sob. 12/13

1:36 pm-4:27 pm

Nonstop1h 51m

$167

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

pt. 1/16

9:00 am-10:10 am

Nonstop2h 10m

Seattle/Tacoma Intl

ndz. 1/18

8:16 pm-10:59 pm

Nonstop1h 43m

$175

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

wt. 12/9

5:07 pm-6:16 pm

Nonstop2h 09m

Seattle/Tacoma Intl

czw. 12/18

9:21 pm-12:07 am

Nonstop1h 46m

$177

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

sob. 12/13

6:05 am-7:14 am

Nonstop2h 09m

Seattle/Tacoma Intl

sob. 12/13

1:36 pm-4:27 pm

Nonstop1h 51m

$207

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

pt. 12/12

5:07 pm-6:16 pm

Nonstop2h 09m

Seattle/Tacoma Intl

sob. 12/13

1:36 pm-4:27 pm

Nonstop1h 51m

$208

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

wt. 12/9

7:06 pm-11:25 pm

1 stop5h 19m

Seattle/Tacoma Intl

pt. 12/12

5:00 pm-10:21 pm

1 stop4h 21m

$227

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

czw. 12/11

7:06 pm-12:20 am

1 stop6h 14m

Seattle/Tacoma Intl

pt. 12/12

5:00 pm-10:21 pm

1 stop4h 21m

$237

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

wt. 3/17

8:00 am-8:59 am

Nonstop1h 59m

Seattle/Tacoma Intl

śr. 3/18

7:55 pm-10:38 pm

Nonstop1h 43m

$298

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

pon. 11/10

7:56 pm-12:07 pm

2 stops17h 11m

Seattle/Tacoma Intl

ndz. 11/16

11:43 am-1:07 pm

1 stop24h 24m

$311

Idaho FallsSeattle

IDA - SEA

IDASEA

Idaho Falls Fanning Field

pon. 11/10

7:56 pm-12:07 pm

2 stops17h 11m

Seattle/Tacoma Intl

czw. 11/13

7:17 pm-4:08 pm

1 stop19h 51m

$369

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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

Prices

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Other information

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 Thursday. momondo users have found tickets for Thursday departures for as low as $399. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday 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 $505.

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 at noon, with an average ticket price of $617. Departure times at noon 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 $312 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 3 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	$237
Fastest flight time	1h 59m
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 $237. The best round-trip flight deal from Idaho Falls to Seattle found on momondo in the last 72 hours is $308.

The fastest flight from Idaho Falls to Seattle takes 1h 59m

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 59m.
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?
The number of operators available for flights from Idaho Falls Fanning Field Airport to Seattle/Tacoma Intl Airport is 3 as of October 2025.
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?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from Idaho Falls to Seattle is Embraer 175 (62.04% of total bookings). The next most popular plane models are Boeing 737 MAX 8 (3.70%), Embraer 175 (Enhanced Winglets) (3.70%), and Boeing 737 MAX 9 (3.70%).
What is the most popular airline from Idaho Falls to Seattle?
Based on momondo bookings for this flight route, the most popular airline on flight routes from Idaho Falls to Seattle is Alaska Airlines (86% of total bookings). The next most popular airlines are Hawaiian Airlines (10%) and Delta (4%).

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
Delta	PriceFrom $118	Free Cancellation	Rating 7.9 7,995 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $119	Free Cancellation	Rating 7.8 2,794 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $187	Free Cancellation	Rating 8.0 11,199 reviews	Search Alaska Airlines flights

Alaska Airlines Flights From Idaho Falls to Seattle
Across 10 Alaska Airlines flights from Idaho Falls to Seattle this week, the average price was $310, with the best Alaska Airlines deals starting from $187 round-trip. 11,199 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 2,794 reviews) operates around 12 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.

Tacoma

Leavenworth

SeaTac

Ocean Shores

Renton

Olympia

Lynnwood

Kent

Puyallup

Marysville

Redmond

Tukwila

Federal Way

Lakewood

Cle Elum

Fife

Centralia

Kirkland

Shoreline

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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czw. 11/27

czw. 12/4

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Cheap flights from Idaho Falls to Seattle from $104

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 11/18. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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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?

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

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

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?

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

There are 3 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?

What is the cheapest airline that flies from Idaho Falls Fanning Field to Seattle/Tacoma Intl?

Delta, Alaska Airlines, and American Airlines are the most popular carriers operating from Idaho Falls Fanning Field to Seattle/Tacoma Intl

What airlines fly to Seattle?

How many flights depart from Idaho Falls to Seattle on average per day?

As of October 2025, 4 flights take off from Idaho Falls and land in Seattle each day. The most common flight departure time for this route is 3:00PM, with 64% of daily flights taking off in the afternoon.

How many flights depart from Idaho Falls to Seattle on average per week?

As of October 2025, 28 flights take off from Idaho Falls and land in Seattle each week. The most common flight departure day for this route is Mon, with 18% of weekly flights taking off on this day.

When to book flights from Idaho Falls to Seattle

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

Fastest flight time

Direct flights

Airports in Seattle

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

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

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?

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

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

Alaska Airlines Flights From Idaho Falls to Seattle

Hawaiian Airlines Flights From Idaho Falls to Seattle

Traveling to a place near Seattle?

Why use momondo?

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

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

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

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

An easier way to manage your Seattle trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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Airports servicing Washington