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Cheap flights from Washington, D.C. Dulles Intl Airport to Idaho Falls from $242

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, D.C. Dulles Intl Airport to Idaho Falls departing on 1/6. 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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Find the cheapest flights from Washington, D.C. Dulles Intl Airport to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
6:04 pm - 10:59 pm
IAD
-
IDA
30h 55m1 stop
Alaska Airlines Logo
6:58 pm - 4:26 pm
IDA
-
IAD
19h 28m1 stop
$334Alaska Airlines
Thu, Jan 22 - Tue, Jan 27
Alaska Airlines Logo
6:04 pm - 10:59 pm
IAD
-
IDA
30h 55m1 stop
Alaska Airlines Logo
6:58 pm - 4:26 pm
IDA
-
IAD
19h 28m1 stop
$354Alaska Airlines
Sat, Jan 24 - Wed, Jan 28
United Airlines Logo
8:15 am - 1:30 pm
IAD
-
IDA
7h 15m1 stop
United Airlines Logo
2:40 pm - 11:22 pm
IDA
-
IAD
6h 42m1 stop
$365United Airlines
Tue, Jan 13 - Thu, Jan 15
Alaska Airlines Logo
6:04 pm - 10:59 pm
IAD
-
IDA
30h 55m1 stop
Alaska Airlines Logo
9:00 am - 4:26 pm
IDA
-
IAD
29h 26m1 stop
$375Alaska Airlines
Sat, Jan 24 - Wed, Jan 28
Alaska Airlines Logo
6:04 pm - 6:18 pm
IAD
-
IDA
26h 14m1 stop
Alaska Airlines Logo
9:00 am - 5:04 pm
IDA
-
IAD
30h 04m2 stops
$393Alaska Airlines
Thu, Jan 22 - Tue, Jan 27
Delta Logo
7:05 am - 12:27 pm
IAD
-
IDA
7h 22m1 stop
Delta Logo
1:10 pm - 11:46 pm
IDA
-
IAD
8h 36m1 stop
$402Delta
Wed, Feb 18 - Fri, Feb 27
American Airlines Logo
11:22 am - 11:07 pm
IAD
-
IDA
13h 45m2 stops
American Airlines Logo
2:02 pm - 10:48 pm
IDA
-
IAD
6h 46m1 stop
$407American Airlines
Wed, Feb 18 - Fri, Feb 27
American Airlines Logo
11:34 am - 10:36 pm
IAD
-
IDA
13h 02m2 stops
American Airlines Logo
7:20 am - 11:12 pm
IDA
-
IAD
13h 52m2 stops
$412American Airlines
Thu, Jan 22 - Tue, Jan 27
American Airlines Logo
11:34 am - 10:36 pm
IAD
-
IDA
13h 02m2 stops
American Airlines Logo
2:02 pm - 10:48 pm
IDA
-
IAD
6h 46m1 stop
$429American Airlines
Sun, Jan 18 - Wed, Mar 4
Alaska Airlines Logo
6:04 pm - 6:18 pm
IAD
-
IDA
26h 14m1 stop
Alaska Airlines Logo
9:00 am - 4:26 pm
IDA
-
IAD
29h 26m1 stop
$468Alaska Airlines
Sat, Jan 24 - Sun, Feb 1

United Airlines flights from Washington, D.C. Dulles Intl Airport to Idaho Falls

Our best United Airlines deals on Washington, D.C. Dulles Intl Airport to Idaho Falls flight tickets
United Airlines
Jan 18
IAD10:02 amWashington, D.C. Dulles Intl
7h 29m
1 stop
IDA3:31 pmIdaho Falls Fanning Field
Mar 4
IDA2:40 pmIdaho Falls Fanning Field
6h 39m
1 stop
IAD11:19 pmWashington, D.C. Dulles Intl
$365
Find similar
United Airlines
May 7
IAD8:15 amWashington, D.C. Dulles Intl
7h 14m
1 stop
IDA1:29 pmIdaho Falls Fanning Field
May 8
IDA2:35 pmIdaho Falls Fanning Field
6h 38m
1 stop
IAD11:13 pmWashington, D.C. Dulles Intl
$499
Find similar
United Airlines
Jan 1
IAD9:47 amWashington, D.C. Dulles Intl
7h 35m
1 stop
IDA3:22 pmIdaho Falls Fanning Field
Jan 5
IDA5:00 amIdaho Falls Fanning Field
6h 16m
1 stop
IAD1:16 pmWashington, D.C. Dulles Intl
$535
Find similar

Delta flights from Washington, D.C. Dulles Intl Airport to Idaho Falls

Our best Delta deals on Washington, D.C. Dulles Intl Airport to Idaho Falls flight tickets
Delta
Feb 18
IAD7:05 amWashington, D.C. Dulles Intl
7h 22m
1 stop
IDA12:27 pmIdaho Falls Fanning Field
Feb 27
IDA1:10 pmIdaho Falls Fanning Field
8h 36m
1 stop
IAD11:46 pmWashington, D.C. Dulles Intl
$402
Find similar
Delta
Dec 23
IAD2:21 pmWashington, D.C. Dulles Intl
10h 31m
2 stops
IDA10:52 pmIdaho Falls Fanning Field
Dec 28
IDA1:10 pmIdaho Falls Fanning Field
8h 08m
1 stop
IAD11:18 pmWashington, D.C. Dulles Intl
$790
Find similar
Delta
Jan 1
IAD12:32 pmWashington, D.C. Dulles Intl
12h 20m
2 stops
IDA10:52 pmIdaho Falls Fanning Field
Jan 5
IDA6:35 pmIdaho Falls Fanning Field
15h 08m
2 stops
IAD11:43 amWashington, D.C. Dulles Intl
$1,289
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Washington, D.C. Dulles Intl Airport 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 December 18, 2025.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Idaho Falls that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 1/22

6:04 pm-10:59 pm

1 stop30h 55m

Idaho Falls Fanning Field

Tue 1/27

6:58 pm-4:26 pm

1 stop19h 28m

$334

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 1/24

6:04 pm-10:59 pm

1 stop30h 55m

Idaho Falls Fanning Field

Wed 1/28

6:58 pm-4:26 pm

1 stop19h 28m

$354

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 1/13

8:15 am-1:30 pm

1 stop7h 15m

Idaho Falls Fanning Field

Thu 1/15

2:40 pm-11:22 pm

1 stop6h 42m

$365

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 1/24

6:04 pm-10:59 pm

1 stop30h 55m

Idaho Falls Fanning Field

Wed 1/28

9:00 am-4:26 pm

1 stop29h 26m

$375

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 1/22

6:04 pm-6:18 pm

1 stop26h 14m

Idaho Falls Fanning Field

Tue 1/27

9:00 am-5:04 pm

2 stops30h 04m

$393

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 2/18

7:05 am-12:27 pm

1 stop7h 22m

Idaho Falls Fanning Field

Fri 2/27

1:10 pm-11:46 pm

1 stop8h 36m

$402

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 2/18

11:22 am-11:07 pm

2 stops13h 45m

Idaho Falls Fanning Field

Fri 2/27

2:02 pm-10:48 pm

1 stop6h 46m

$407

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 1/22

11:34 am-10:36 pm

2 stops13h 02m

Idaho Falls Fanning Field

Tue 1/27

7:20 am-11:12 pm

2 stops13h 52m

$412

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sun 1/18

11:34 am-10:36 pm

2 stops13h 02m

Idaho Falls Fanning Field

Wed 3/4

2:02 pm-10:48 pm

1 stop6h 46m

$429

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 1/24

6:04 pm-6:18 pm

1 stop26h 14m

Idaho Falls Fanning Field

Sun 2/1

9:00 am-4:26 pm

1 stop29h 26m

$468

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Idaho Falls from

How to get the cheapest flight ticket from Washington, D.C. Dulles Intl Airport 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 day to depart on your flight to Idaho Falls?

Our data shows that Saturday is the least expensive day to fly to Idaho Falls. Tickets to fly out on this day can be as low as $562. 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 $870.

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 morning. Flights from Washington, D.C. Dulles Intl Airport to Idaho Falls during this time can be as low as $716. Try not to purchase tickets in the afternoon because they tend to be around $758. Of course, these prices can vary depending on the time of year and what airport you fly to.

Can stopping save me money on Washington, D.C. Dulles Intl Airport to Idaho Falls flights?

You could potentially save up to 15% on your flight if you consider stops on a Washington, D.C. Dulles Intl Airport to Idaho Falls flight.

When to book flights from Washington, D.C. Dulles Intl Airport to Idaho Falls

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

Cheap Washington, D.C. Dulles Intl Airport to Idaho Falls (IAD to IDA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Washington, D.C. Dulles Intl Airport to Idaho Falls

Fastest flight time

7h 14m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Idaho Falls takes 7h 14m
There are no direct flights from Washington, D.C. Dulles Intl Airport to Idaho Falls. There are no popular flight routes from Washington, D.C. Dulles Intl Airport to Idaho Falls.
Search flight deals

  • How far is Washington, D.C. Dulles Intl to Idaho Falls Fanning Field by plane?

    There are 1810.0 mi between Washington, D.C. Dulles Intl and Idaho Falls Fanning Field. A reasonable flight in good conditions will take 7h 14m.

  • When did momondo last update prices for flights from Washington, D.C. Dulles Intl Airport to Idaho Falls Fanning Field Airport?

    Prices for flights from Washington, D.C. Dulles Intl Airport to Idaho Falls Fanning Field Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington, D.C. Dulles Intl Airport to Idaho Falls Fanning Field Airport?

  • How old do you have to be to fly from Washington, D.C. Dulles Intl Airport to Idaho Falls Fanning Field Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington, D.C. Dulles Intl Airport 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 airline from Washington, D.C. Dulles Intl Airport to Idaho Falls?

Best airlines flying from Washington, D.C. Dulles Intl Airport to Idaho Falls

Compare and see reviews for airlines that fly from Washington, D.C. Dulles Intl Airport to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $388Free CancellationRating
7.4
9,091 reviews
Search United Airlines 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, D.C. to Idaho Falls?

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

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

Yes. momondo enables you to select and highlight flights to Idaho Falls from Washington, D.C. with this policy.

How can momondo help me find flights from Washington, D.C. to Idaho Falls?

Once you have performed a search for Washington, D.C. to Idaho Falls 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 Washington, D.C. to Idaho Falls right now. Can momondo alert me if prices change?

Price alerts on flights to Idaho Falls from Washington, D.C. are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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