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Cheap flights from Washington, D.C. Dulles Intl Airport to Idaho Falls from $213

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 8/16. 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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0 bags

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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
6:03 am - 3:37 pm
IAD
-
IDA
11h 34m
1 stop
Alaska Airlines Logo
1:43 pm - 11:59 pm
IDA
-
IAD
8h 16m
1 stop
$399Alaska Airlines
Wed, Jul 15 - Wed, Jul 22
United Airlines Logo
6:30 am - 1:29 pm
IAD
-
IDA
8h 59m
1 stop
United Airlines Logo
10:35 am - 7:26 pm
IDA
-
IAD
6h 51m
1 stop
$410United Airlines
Sun, Sep 20 - Wed, Sep 30
Delta Logo
8:05 am - 6:14 pm
IAD
-
IDA
12h 09m
2 stops
Delta Logo
6:54 pm - 9:48 am
IDA
-
IAD
12h 54m
2 stops
$439Delta
Tue, Jun 2 - Fri, Jun 5
Delta Logo
7:20 pm - 10:50 am
IAD
-
IDA
17h 30m
2 stops
Delta Logo
7:00 pm - 11:49 am
IDA
-
IAD
14h 49m
2 stops
$447Delta
Mon, Aug 3 - Wed, Aug 12
Alaska Airlines Logo
6:03 am - 3:37 pm
IAD
-
IDA
11h 34m
1 stop
Alaska Airlines Logo
1:43 pm - 11:59 pm
IDA
-
IAD
8h 16m
1 stop
$449Alaska Airlines
Sat, Jul 4 - Wed, Jul 15
Alaska Airlines Logo
9:00 am - 3:26 pm
IAD
-
IDA
8h 26m
1 stop
Alaska Airlines Logo
6:00 am - 4:38 pm
IDA
-
IAD
8h 38m
1 stop
$459Alaska Airlines
Mon, Jun 1 - Wed, Jun 3
Delta Logo
7:10 am - 10:43 am
IAD
-
IDA
29h 33m
1 stop
Delta Logo
6:00 am - 6:30 pm
IDA
-
IAD
10h 30m
2 stops
$468Delta
Sat, Jul 4 - Thu, Jul 9
United Airlines Logo
6:30 am - 1:25 pm
IAD
-
IDA
8h 55m
1 stop
United Airlines Logo
4:04 pm - 12:32 am
IDA
-
IAD
6h 28m
1 stop
$469United Airlines
Mon, Aug 10 - Thu, Aug 20
Alaska Airlines Logo
7:29 pm - 10:56 pm
IAD
-
IDA
29h 27m
2 stops
Alaska Airlines Logo
6:18 am - 4:54 pm
IDA
-
IAD
8h 36m
1 stop
$475Alaska Airlines
Fri, Sep 25 - Tue, Sep 29
Alaska Airlines Logo
7:53 pm - 3:37 pm
IAD
-
IDA
21h 44m
2 stops
Alaska Airlines Logo
1:43 pm - 11:59 pm
IDA
-
IAD
8h 16m
1 stop
$490Alaska Airlines
Wed, Jul 15 - Wed, Jul 22

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

Our best Alaska Airlines deals on Washington, D.C. Dulles Intl Airport to Idaho Falls flight tickets
Alaska Airlines
Jul 15
IAD6:03 amWashington, D.C. Dulles Intl
11h 34m
1 stop
IDA3:37 pmIdaho Falls Fanning Field
Jul 22
IDA1:43 pmIdaho Falls Fanning Field
8h 16m
1 stop
IAD11:59 pmWashington, D.C. Dulles Intl
$399
Alaska Airlines
Jul 4
IAD6:03 amWashington, D.C. Dulles Intl
11h 34m
1 stop
IDA3:37 pmIdaho Falls Fanning Field
Jul 14
IDA7:15 amIdaho Falls Fanning Field
7h 56m
1 stop
IAD5:11 pmWashington, D.C. Dulles Intl
$449
Alaska Airlines
Jun 1
IAD9:00 amWashington, D.C. Dulles Intl
8h 26m
1 stop
IDA3:26 pmIdaho Falls Fanning Field
Jun 3
IDA6:00 amIdaho Falls Fanning Field
8h 38m
1 stop
IAD4:38 pmWashington, D.C. Dulles Intl
$459

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

Our best American Airlines deals on Washington, D.C. Dulles Intl Airport to Idaho Falls flight tickets
American Airlines
Sep 20
IAD6:24 amWashington, D.C. Dulles Intl
9h 20m
1 stop
IDA1:44 pmIdaho Falls Fanning Field
Sep 30
IDA1:44 pmIdaho Falls Fanning Field
8h 07m
2 stops
IAD11:51 pmWashington, D.C. Dulles Intl
$572
American Airlines
Sep 25
IAD8:15 pmWashington, D.C. Dulles Intl
17h 57m
2 stops
IDA12:12 pmIdaho Falls Fanning Field
Sep 29
IDA1:44 pmIdaho Falls Fanning Field
8h 07m
2 stops
IAD11:51 pmWashington, D.C. Dulles Intl
$574
American Airlines
Sep 19
IAD6:24 amWashington, D.C. Dulles Intl
9h 20m
1 stop
IDA1:44 pmIdaho Falls Fanning Field
Sep 22
IDA12:12 pmIdaho Falls Fanning Field
9h 39m
2 stops
IAD11:51 pmWashington, D.C. Dulles Intl
$576

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 May 16, 2026.
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

Cheapest round-trip

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 7/15

6:03 am-3:37 pm

1 stop11h 34m

Idaho Falls Fanning Field

Wed 7/22

1:43 pm-11:59 pm

1 stop8h 16m

$399

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sun 9/20

6:30 am-1:29 pm

1 stop8h 59m

Idaho Falls Fanning Field

Wed 9/30

10:35 am-7:26 pm

1 stop6h 51m

$410

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 6/2

8:05 am-6:14 pm

2 stops12h 09m

Idaho Falls Fanning Field

Fri 6/5

6:54 pm-9:48 am

2 stops12h 54m

$439

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 8/3

7:20 pm-10:50 am

2 stops17h 30m

Idaho Falls Fanning Field

Wed 8/12

7:00 pm-11:49 am

2 stops14h 49m

$447

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 7/4

6:03 am-3:37 pm

1 stop11h 34m

Idaho Falls Fanning Field

Wed 7/15

1:43 pm-11:59 pm

1 stop8h 16m

$449

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 6/1

9:00 am-3:26 pm

1 stop8h 26m

Idaho Falls Fanning Field

Wed 6/3

6:00 am-4:38 pm

1 stop8h 38m

$459

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 7/4

7:10 am-10:43 am

1 stop29h 33m

Idaho Falls Fanning Field

Thu 7/9

6:00 am-6:30 pm

2 stops10h 30m

$468
Quickest round-trip

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 8/10

6:30 am-1:25 pm

1 stop8h 55m

Idaho Falls Fanning Field

Thu 8/20

4:04 pm-12:32 am

1 stop6h 28m

$469

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Fri 9/25

7:29 pm-10:56 pm

2 stops29h 27m

Idaho Falls Fanning Field

Tue 9/29

6:18 am-4:54 pm

1 stop8h 36m

$475

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 7/15

7:53 pm-3:37 pm

2 stops21h 44m

Idaho Falls Fanning Field

Wed 7/22

1:43 pm-11:59 pm

1 stop8h 16m

$490

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 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

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

You could potentially save up to 56% 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 00m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Idaho Falls takes 7h 00m
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

Frequently asked questions about flying from Washington, D.C. Dulles Intl Airport to Idaho Falls

  • 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 00m.

  • 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 $275Free CancellationRating
7.4
9,727 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $433Free CancellationRating
7.9
12,370 reviews
Search Alaska Airlines flights

Traveling to a place near Idaho Falls?

Book flights to Idaho Falls if you plan to visit one of these locations
Rexburg

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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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