How many flights depart from State of Washington to Idaho Falls on average per day?

As of March 2026, there are 4 flights per day flying from State of Washington to Idaho Falls. The most common time of day flights depart is 8:00PM, with 60% of flights taking off in the evening.

What is the cheapest airline that flies from Washington to Idaho Falls Fanning Field?

Alaska Airlines, Allegiant Air, and Delta are the most popular carriers operating from Washington to Idaho Falls Fanning Field

How many flights depart from State of Washington to Idaho Falls on average per week?

The number of flights available between State of Washington and Idaho Falls is 29 per week as of March 2026. The most frequent departure day is Mon, with 17% of weekly flights leaving on this day.

How long does it take to fly to Idaho Falls?

If you’re flying from a popular airport in State of Washington, such as Seattle or Spokane, and flying into Idaho Falls, then you can expect flight times to average 2h 03m and 4h 10m, respectively.

What airlines fly to Idaho Falls?

Alaska Airlines, Delta and Hawaiian Airlines are the top three most popular airlines that fly to Idaho Falls from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 4 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Washington to Idaho Falls Fanning Field Airport?

Prices for flights from Washington to Idaho Falls Fanning Field Airport are updated daily.

How many operators does momondo search for flights from Washington to Idaho Falls Fanning Field Airport?

As of March 2026, there are 4 operators available to choose from for flights from Washington to Idaho Falls Fanning Field Airport.

How old do you have to be to fly from Washington to Idaho Falls Fanning Field Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington 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.

$149 Cheap Flights from Washington to Idaho Falls in 2026

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Find the cheapest flights from Washington to Idaho Falls

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:04 pm - 10:52 pm

SEA

IDA

1h 48mnonstop

6:00 am - 6:57 am

IDA

SEA

1h 57mnonstop

$257Alaska Airlines

Tue, Apr 21 - Tue, Apr 28

12:20 pm - 3:00 pm

PDX

IDA

1h 40mnonstop

9:45 am - 5:48 pm

IDA

PDX

9h 03m

1 stop

$264Allegiant Air

Fri, Jul 17 - Sun, Jul 19

8:00 pm - 10:53 pm

SEA

IDA

1h 53mnonstop

6:00 am - 7:03 am

IDA

SEA

2h 03mnonstop

$292Alaska Airlines

Tue, May 19 - Wed, May 27

7:54 pm - 10:40 pm

SEA

IDA

1h 46mnonstop

6:00 am - 6:57 am

IDA

SEA

1h 57mnonstop

$307Alaska Airlines

Wed, Apr 29 - Sat, May 2

8:45 am - 1:17 pm

SEA

IDA

3h 32m

1 stop

6:00 am - 7:03 am

IDA

SEA

2h 03mnonstop

$310Alaska Airlines

Wed, May 13 - Sat, May 16

12:48 pm - 3:29 pm

SEA

IDA

1h 41mnonstop

4:03 pm - 5:00 pm

IDA

SEA

1h 57mnonstop

$312Alaska Airlines

Thu, Sep 10 - Tue, Sep 15

5:55 pm - 10:40 pm

SEA

IDA

3h 45m

1 stop

6:58 pm - 11:59 pm

IDA

SEA

6h 01m

1 stop

$317Delta

Sat, May 2 - Tue, May 5

12:35 pm - 3:26 pm

SEA

IDA

1h 51mnonstop

4:03 pm - 6:54 pm

IDA

SEA

3h 51m

1 stop

$327Alaska Airlines

Tue, May 19 - Wed, May 27

5:05 pm - 10:40 pm

PDX

IDA

4h 35m

1 stop

6:58 pm - 11:53 pm

IDA

PDX

5h 55m

1 stop

$337Delta

Mon, Apr 20 - Mon, Apr 27

8:26 pm - 3:12 pm

PDX

IDA

17h 46m

1 stop

10:21 pm - 11:38 am

IDA

PDX

38h 17m

2 stops

$368Multiple Airlines

Sun, Apr 5 - Mon, Apr 13

Alaska Airlines flights from State of Washington to Idaho Falls

Our best Alaska Airlines deals on State of Washington to Idaho Falls flight tickets

Alaska Airlines

Apr 21

SEA8:04 pmSeattle/Tacoma Intl

1h 48m

IDA10:52 pmIdaho Falls Fanning Field

Apr 28

IDA6:00 amIdaho Falls Fanning Field

1h 57m

SEA6:57 amSeattle/Tacoma Intl

$257

Alaska Airlines

May 19

SEA8:00 pmSeattle/Tacoma Intl

1h 53m

IDA10:53 pmIdaho Falls Fanning Field

May 27

IDA6:00 amIdaho Falls Fanning Field

2h 03m

SEA7:03 amSeattle/Tacoma Intl

$292

Alaska Airlines

Apr 29

SEA7:54 pmSeattle/Tacoma Intl

1h 46m

IDA10:40 pmIdaho Falls Fanning Field

May 2

IDA6:00 amIdaho Falls Fanning Field

1h 57m

SEA6:57 amSeattle/Tacoma Intl

$307

Delta flights from State of Washington to Idaho Falls

Our best Delta deals on State of Washington to Idaho Falls flight tickets

Delta

May 2

SEA5:55 pmSeattle/Tacoma Intl

3h 45m

1 stop

IDA10:40 pmIdaho Falls Fanning Field

May 5

IDA6:58 pmIdaho Falls Fanning Field

6h 01m

1 stop

SEA11:59 pmSeattle/Tacoma Intl

$317

Delta

Apr 20

PDX5:05 pmPortland

4h 35m

1 stop

IDA10:40 pmIdaho Falls Fanning Field

Apr 27

IDA6:58 pmIdaho Falls Fanning Field

5h 55m

1 stop

PDX11:53 pmPortland

$337

Delta

May 12

GEG5:35 amSpokane

4h 12m

1 stop

IDA10:47 amIdaho Falls Fanning Field

May 13

IDA6:54 pmIdaho Falls Fanning Field

5h 41m

1 stop

GEG11:35 pmSpokane

$355

momondo Fare Finder

Use the filters below to find and compare flights from Washington 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

Tue 4/21

8:04 pm-10:52 pm

Nonstop1h 48m

Idaho Falls Fanning Field

Tue 4/28

6:00 am-6:57 am

Nonstop1h 57m

$257

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 7/17

12:20 pm-3:00 pm

Nonstop1h 40m

Idaho Falls Fanning Field

Sun 7/19

9:45 am-5:48 pm

1 stop9h 03m

$264

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 5/19

8:00 pm-10:53 pm

Nonstop1h 53m

Idaho Falls Fanning Field

Wed 5/27

6:00 am-7:03 am

Nonstop2h 03m

$292

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 4/29

7:54 pm-10:40 pm

Nonstop1h 46m

Idaho Falls Fanning Field

Sat 5/2

6:00 am-6:57 am

Nonstop1h 57m

$307

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 5/13

8:45 am-1:17 pm

1 stop3h 32m

Idaho Falls Fanning Field

Sat 5/16

6:00 am-7:03 am

Nonstop2h 03m

$310

Quickest round-trip

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Thu 9/10

12:48 pm-3:29 pm

Nonstop1h 41m

Idaho Falls Fanning Field

Tue 9/15

4:03 pm-5:00 pm

Nonstop1h 57m

$312

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sat 5/2

5:55 pm-10:40 pm

1 stop3h 45m

Idaho Falls Fanning Field

Tue 5/5

6:58 pm-11:59 pm

1 stop6h 01m

$317

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Tue 5/19

12:35 pm-3:26 pm

Nonstop1h 51m

Idaho Falls Fanning Field

Wed 5/27

4:03 pm-6:54 pm

1 stop3h 51m

$327

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 4/20

5:05 pm-10:40 pm

1 stop4h 35m

Idaho Falls Fanning Field

Mon 4/27

6:58 pm-11:53 pm

1 stop5h 55m

$337

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Sun 4/5

8:26 pm-3:12 pm

1 stop17h 46m

Idaho Falls Fanning Field

Mon 4/13

10:21 pm-11:38 am

2 stops38h 17m

$368

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington 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

Prices

Airlines

Other information

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 Monday 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 State of Washington 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 $340. Of course, these prices can vary depending on the time of year and what airport you fly to.

What is the cheapest Washington to Idaho Falls Fanning Field flight route?

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

What cabin class options are available on Washington to Idaho Falls Fanning Field flights?

There are 4 cabin classes available to choose from on Washington 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 State of Washington to Idaho Falls flights?

You could potentially save up to 3% on your flight if you consider stops on a State of Washington to Idaho Falls flight.

Cheap State of Washington to Idaho Falls flight deals and tips

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

Best Price Found	$168
Fastest flight time	1h 36m
Direct flights	Every day
Airports in Idaho Falls	1 airport

The best one-way flight to Idaho Falls from State of Washington in the past 72 hours is $168. The best round-trip flight deal from State of Washington to Idaho Falls found on momondo in the last 72 hours is $327.

The fastest flight from State of Washington to Idaho Falls takes 1h 36m

Direct flights go from State of Washington to Idaho Falls every day.

There is 1 airport in Idaho Falls. From State of Washington there are direct flights to Idaho Falls Fanning Field (IDA).

Search flight deals

When did momondo last update prices for flights from Washington to Idaho Falls Fanning Field Airport?
Prices for flights from Washington to Idaho Falls Fanning Field Airport are updated daily.
How many operators does momondo search for flights from Washington to Idaho Falls Fanning Field Airport?
As of March 2026, there are 4 operators available to choose from for flights from Washington to Idaho Falls Fanning Field Airport.
How old do you have to be to fly from Washington to Idaho Falls Fanning Field Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Washington 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 State of Washington to Idaho Falls?
Based on momondo bookings for this flight route, the most popular plane model on flight routes from State of Washington to Idaho Falls is Embraer 175 (100.00% of total bookings).

Best airlines flying from State of Washington to Idaho Falls

Compare and see reviews for airlines that fly from State of Washington to Idaho Falls with momondo

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $118	Free Cancellation	Rating 7.9 8,326 reviews	Search Delta flights
Hawaiian Airlines	PriceFrom $139	Free Cancellation	Rating 7.8 2,840 reviews	Search Hawaiian Airlines flights
Alaska Airlines	PriceFrom $177	Free Cancellation	Rating 7.9 12,111 reviews	Search Alaska Airlines flights

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Idaho Falls for you.

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

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

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

momondo helps you find the best flight between Washington and Idaho Falls by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

If you are simply researching potential flights to Idaho Falls, momondo offers a useful price alert feature which will track prices for flights to Idaho Falls from Washington and alert you when they change.

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Boise Air Term. Gowen Fld Airport

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Hailey Sun Valley-Friedman Airport

Twin Falls Joslin Airport

Cheap flights from Washington to Idaho Falls 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 Washington to Idaho Falls departing on 4/14. 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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Alaska Airlines flights from State of Washington to Idaho Falls

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

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How to get the cheapest flight ticket from State of Washington to Idaho Falls

What is the cheapest month to fly to Idaho Falls?

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

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

What is the cheapest Washington to Idaho Falls Fanning Field flight route?

What cabin class options are available on Washington to Idaho Falls Fanning Field flights?

Can stopping save me money on State of Washington to Idaho Falls flights?

What is the cheapest airline that flies from Washington to Idaho Falls Fanning Field?

What airlines fly to Idaho Falls?

How many flights depart from State of Washington to Idaho Falls on average per day?

How many flights depart from State of Washington to Idaho Falls on average per week?

How long does it take to fly to Idaho Falls?

Cheap State of Washington to Idaho Falls flight deals and tips

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

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Compare and see reviews for airlines that fly from State of Washington to Idaho Falls with momondo

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List of cabin classes available on flights landing in Idaho Falls. Availability may vary depending on flight origin and airline.

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