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

Allegiant Air, Alaska Airlines, 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 day?

As of May 2026, there are 1 flights per day flying from State of Washington to Idaho Falls. The most common time of day flights depart is 7:00PM, with 54% of flights taking off in the evening.

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 09m and 5h 07m, respectively.

What airlines fly to Idaho Falls?

Alaska Airlines, Delta and United 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 57% 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.

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 9 per week as of May 2026. The most frequent departure day is Mon, with 33% of weekly flights leaving on this day.

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 May 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.

$46 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

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Cheap round-trip flights

Enter your travel dates to find the best prices.

12:20 pm - 3:00 pm

PDX

IDA

1h 40mnonstop

3:50 pm - 4:26 pm

IDA

PDX

1h 36mnonstop

$71Allegiant Air

Fri, Jul 17 - Fri, Jul 24

3:10 pm - 5:49 pm

PDX

IDA

1h 39mnonstop

6:39 pm - 7:20 pm

IDA

PDX

1h 41mnonstop

$82Allegiant Air

Fri, May 29 - Mon, Jun 1

3:10 pm - 5:49 pm

PDX

IDA

1h 39mnonstop

6:39 pm - 7:18 pm

IDA

PDX

1h 39mnonstop

$84Allegiant Air

Mon, Jun 1 - Mon, Jun 8

3:10 pm - 5:49 pm

PDX

IDA

1h 39mnonstop

6:39 pm - 7:18 pm

IDA

PDX

1h 39mnonstop

$88Allegiant Air

Mon, Jun 1 - Mon, Jun 8

8:00 pm - 10:53 pm

SEA

IDA

1h 53mnonstop

6:00 am - 7:03 am

IDA

SEA

2h 03mnonstop

$227Alaska Airlines

Mon, Jun 1 - Sat, Jun 6

7:05 am - 1:17 pm

SEA

IDA

5h 12m

1 stop

4:03 pm - 6:54 pm

IDA

SEA

3h 51m

1 stop

$247Alaska Airlines

Mon, Jun 1 - Sat, Jun 6

4:59 pm - 10:42 pm

GEG

IDA

4h 43m

1 stop

6:00 am - 9:10 am

IDA

GEG

4h 10m

1 stop

$384Delta

Tue, Jun 2 - Thu, Jun 4

8:47 pm - 4:08 pm

GEG

IDA

18h 21m

1 stop

10:56 pm - 3:49 pm

IDA

GEG

41h 53m

2 stops

$418Multiple Airlines

Sun, Jun 14 - Fri, Jun 19

4:59 pm - 10:42 pm

GEG

IDA

4h 43m

1 stop

6:00 am - 9:10 am

IDA

GEG

4h 10m

1 stop

$421Delta

Mon, Jun 1 - Thu, Jun 4

8:45 pm - 10:10 am

GEG

IDA

12h 25m

1 stop

10:56 pm - 3:49 pm

IDA

GEG

41h 53m

2 stops

$431Multiple Airlines

Sun, May 31 - Fri, Jun 5

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

Jun 1

SEA8:00 pmSeattle/Tacoma Intl

1h 53m

IDA10:53 pmIdaho Falls Fanning Field

Jun 6

IDA6:00 amIdaho Falls Fanning Field

2h 03m

SEA7:03 amSeattle/Tacoma Intl

$227

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

Alaska Airlines

Jun 5

PDX10:30 amPortland

1h 47m

IDA1:17 pmIdaho Falls Fanning Field

Jun 8

IDA4:03 pmIdaho Falls Fanning Field

1h 47m

PDX4:50 pmPortland

$252

Allegiant Air flights from State of Washington to Idaho Falls

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

Allegiant Air

Jul 17

PDX12:20 pmPortland

1h 40m

IDA3:00 pmIdaho Falls Fanning Field

Jul 24

IDA3:50 pmIdaho Falls Fanning Field

1h 36m

PDX4:26 pmPortland

$71

Allegiant Air

May 29

PDX3:10 pmPortland

1h 39m

IDA5:49 pmIdaho Falls Fanning Field

Jun 1

IDA6:39 pmIdaho Falls Fanning Field

1h 41m

PDX7:20 pmPortland

$82

Allegiant Air

Jun 1

PDX3:10 pmPortland

1h 39m

IDA5:49 pmIdaho Falls Fanning Field

Jun 8

IDA6:39 pmIdaho Falls Fanning Field

1h 39m

PDX7:18 pmPortland

$84

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

Quickest round-trip

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 7/17

12:20 pm-3:00 pm

Nonstop1h 40m

Idaho Falls Fanning Field

Fri 7/24

3:50 pm-4:26 pm

Nonstop1h 36m

$71

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Fri 5/29

3:10 pm-5:49 pm

Nonstop1h 39m

Idaho Falls Fanning Field

Mon 6/1

6:39 pm-7:20 pm

Nonstop1h 41m

$82

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 6/1

3:10 pm-5:49 pm

Nonstop1h 39m

Idaho Falls Fanning Field

Mon 6/8

6:39 pm-7:18 pm

Nonstop1h 39m

$84

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Mon 6/1

3:10 pm-5:49 pm

Nonstop1h 39m

Idaho Falls Fanning Field

Mon 6/8

6:39 pm-7:18 pm

Nonstop1h 39m

$88

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Mon 6/1

8:00 pm-10:53 pm

Nonstop1h 53m

Idaho Falls Fanning Field

Sat 6/6

6:00 am-7:03 am

Nonstop2h 03m

$227

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Mon 6/1

7:05 am-1:17 pm

1 stop5h 12m

Idaho Falls Fanning Field

Sat 6/6

4:03 pm-6:54 pm

1 stop3h 51m

$247

SpokaneIdaho Falls

GEG - IDA

GEGIDA

Spokane

Tue 6/2

4:59 pm-10:42 pm

1 stop4h 43m

Idaho Falls Fanning Field

Thu 6/4

6:00 am-9:10 am

1 stop4h 10m

$384

SpokaneIdaho Falls

GEG - IDA

GEGIDA

Spokane

Sun 6/14

8:47 pm-4:08 pm

1 stop18h 21m

Idaho Falls Fanning Field

Fri 6/19

10:56 pm-3:49 pm

2 stops41h 53m

$418

SpokaneIdaho Falls

GEG - IDA

GEGIDA

Spokane

Mon 6/1

4:59 pm-10:42 pm

1 stop4h 43m

Idaho Falls Fanning Field

Thu 6/4

6:00 am-9:10 am

1 stop4h 10m

$421

SpokaneIdaho Falls

GEG - IDA

GEGIDA

Spokane

Sun 5/31

8:45 pm-10:10 am

1 stop12h 25m

Idaho Falls Fanning Field

Fri 6/5

10:56 pm-3:49 pm

2 stops41h 53m

$431

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 September, then flying in May is also cheap. Prices for this month can be found on momondo for an average of $118.

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 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 $335. 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

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

No. A direct flight is the cheapest option for a flight between State of Washington 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

Best Price Found	$128
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 $128. The best round-trip flight deal from State of Washington to Idaho Falls found on momondo in the last 72 hours is $322.

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

Frequently asked questions about flying from Washington to Idaho Falls

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 May 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
Hawaiian Airlines	PriceFrom $108	Free Cancellation	Rating 7.8 2,837 reviews	Search Hawaiian Airlines flights
Delta	PriceFrom $118	Free Cancellation	Rating 7.9 8,452 reviews	Search Delta flights
Alaska Airlines	PriceFrom $177	Free Cancellation	Rating 7.9 12,352 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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Cheap flights from Washington to Idaho Falls from $46

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 5/22. 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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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?

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

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