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Cheap flights from Washington 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 Washington to Idaho Falls departing on 10/8. 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 Washington to Idaho Falls

Cheap round-trip flights

Hawaiian Airlines Logo
7:55 pm - 10:38 pmSEA-IDA
1h 43mnonstop
Hawaiian Airlines Logo
4:15 pm - 5:12 pmIDA-SEA
1h 57mnonstop
$197Hawaiian Airlines
Find Deal
Sun, Oct 19 - Sat, Oct 25
Delta Logo
5:30 am - 10:39 amSEA-IDA
4h 09m1 stop
Delta Logo
3:00 pm - 7:00 pmIDA-SEA
5h 00m1 stop
$198Delta
Find Deal
Wed, Sep 3 - Tue, Sep 9
Hawaiian Airlines Logo
7:55 pm - 10:38 pmSEA-IDA
1h 43mnonstop
Hawaiian Airlines Logo
6:00 am - 7:11 amIDA-SEA
2h 11mnonstop
$217Hawaiian Airlines
Find Deal
Fri, Oct 17 - Sun, Oct 19
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
Alaska Airlines Logo
7:55 pm - 10:38 pmSEA-IDA
1h 43mnonstop
Alaska Airlines Logo
6:00 am - 7:11 amIDA-SEA
2h 11mnonstop
$238Alaska Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
Logo
6:27 am - 5:06 pmPDX-IDA
9h 39m1 stop
Logo
5:51 pm - 11:23 amIDA-PDX
18h 32m1 stop
$244
Find Deal
Thu, Aug 28 - Sun, Aug 31
Alaska Airlines Logo
7:55 pm - 10:39 pmSEA-IDA
1h 44mnonstop
Alaska Airlines Logo
6:13 am - 7:10 amIDA-SEA
1h 57mnonstop
$268Alaska Airlines
Find Deal
Wed, Sep 3 - Tue, Sep 9
Logo
9:26 am - 2:32 pmPDX-IDA
4h 06m1 stop
Logo
1:26 pm - 2:11 pmIDA-PDX
1h 45mnonstop
$301
Find Deal
Wed, Dec 24 - Fri, Dec 26
United Airlines Logo
7:00 pm - 9:47 amSEA-IDA
13h 47m1 stop
United Airlines Logo
5:00 am - 3:53 pmIDA-SEA
11h 53m1 stop
$511United Airlines
Find Deal
Mon, Sep 8 - Sat, Sep 13
United Airlines Logo
7:00 pm - 9:47 amSEA-IDA
13h 47m1 stop
United Airlines Logo
5:56 pm - 5:54 pmIDA-SEA
24h 58m1 stop
$516United Airlines
Find Deal
Fri, Sep 12 - Mon, Sep 15

Hawaiian Airlines flights from State of Washington to Idaho Falls

Our best Hawaiian Airlines deals on State of Washington to Idaho Falls flight tickets
Hawaiian Airlines
Oct 19
SEA7:55 pmSeattle/Tacoma Intl
1h 43m
IDA10:38 pmIdaho Falls Fanning Field
Oct 25
IDA4:15 pmIdaho Falls Fanning Field
1h 57m
SEA5:12 pmSeattle/Tacoma Intl
$197
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
$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

United Airlines flights from State of Washington to Idaho Falls

Our best United Airlines deals on State of Washington to Idaho Falls flight tickets
United Airlines
Sep 8
SEA7:00 pmSeattle/Tacoma Intl
13h 47m
1 stop
IDA9:47 amIdaho Falls Fanning Field
Sep 13
IDA5:00 amIdaho Falls Fanning Field
11h 53m
1 stop
SEA3:53 pmSeattle/Tacoma Intl
$511
Find similar
United Airlines
Sep 12
SEA7:00 pmSeattle/Tacoma Intl
13h 47m
1 stop
IDA9:47 amIdaho Falls Fanning Field
Sep 15
IDA5:56 pmIdaho Falls Fanning Field
24h 58m
1 stop
SEA5:54 pmSeattle/Tacoma Intl
$516
Find similar
United Airlines
Aug 28
PDX5:00 amPortland
14h 54m
1 stop
IDA8:54 pmIdaho Falls Fanning Field
Sep 7
IDA10:56 amIdaho Falls Fanning Field
11h 05m
1 stop
PDX9:01 pmPortland
$540
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington 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 12, 2025.
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

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Sun 10/19

7:55 pm-10:38 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Sat 10/25

4:15 pm-5:12 pm

Nonstop1h 57m

$197

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 9/3

5:30 am-10:39 am

1 stop4h 09m

Idaho Falls Fanning Field

Tue 9/9

3:00 pm-7:00 pm

1 stop5h 00m

$198

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

$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

Wed 10/8

7:55 pm-10:38 pm

Nonstop1h 43m

Idaho Falls Fanning Field

Sun 10/12

6:00 am-7:11 am

Nonstop2h 11m

$238

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Thu 8/28

6:27 am-5:06 pm

1 stop9h 39m

Idaho Falls Fanning Field

Sun 8/31

5:51 pm-11:23 am

1 stop18h 32m

$244

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Wed 9/3

7:55 pm-10:39 pm

Nonstop1h 44m

Idaho Falls Fanning Field

Tue 9/9

6:13 am-7:10 am

Nonstop1h 57m

$268

PortlandIdaho Falls

PDX - IDA

PDXIDA

Portland

Wed 12/24

9:26 am-2:32 pm

1 stop4h 06m

Idaho Falls Fanning Field

Fri 12/26

1:26 pm-2:11 pm

Nonstop1h 45m

$301

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Mon 9/8

7:00 pm-9:47 am

1 stop13h 47m

Idaho Falls Fanning Field

Sat 9/13

5:00 am-3:53 pm

1 stop11h 53m

$511

SeattleIdaho Falls

SEA - IDA

SEAIDA

Seattle/Tacoma Intl

Fri 9/12

7:00 pm-9:47 am

1 stop13h 47m

Idaho Falls Fanning Field

Mon 9/15

5:56 pm-5:54 pm

1 stop24h 58m

$516

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 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

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 State of Washington 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 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

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

You are more likely to see cheaper flights to Idaho Falls from State of Washington 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 State of Washington for as low as $195 on momondo.

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 5% 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

$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 State of Washington in the past 72 hours is $109. The best round-trip flight deal from State of Washington to Idaho Falls found on momondo in the last 72 hours is $197.
The fastest flight from State of Washington to Idaho Falls takes 1h 43m
Direct flights go from State of Washington to Idaho Falls every day.
There is 1 airport near Idaho Falls: 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?

  • 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?

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 AirlinesPriceFrom $139Free CancellationRating
7.8
2,651 reviews
Search Hawaiian Airlines flights
Alaska AirlinesPriceFrom $145Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $209Free CancellationRating
8.0
7,978 reviews
Search Delta flights

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 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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