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Cheap flights from Washington, D.C. Dulles Intl Airport to Idaho Falls from $126

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 9/3. 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
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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.
Multiple Airlines Logo
9:50 am - 4:05 pm
IAD
-
IDA
8h 15m
1 stop
Multiple Airlines Logo
5:33 pm - 10:07 am
IDA
-
IAD
14h 34m
2 stops
$288Multiple Airlines
Mon, Aug 17 - Mon, Aug 24
Multiple Airlines Logo
9:50 am - 4:05 pm
IAD
-
IDA
8h 15m
1 stop
Multiple Airlines Logo
10:54 pm - 8:04 am
IDA
-
IAD
31h 10m
1 stop
$320Multiple Airlines
Mon, Aug 10 - Mon, Aug 17
Multiple Airlines Logo
9:50 am - 4:05 pm
IAD
-
IDA
8h 15m
1 stop
Multiple Airlines Logo
3:55 pm - 8:04 am
IDA
-
IAD
14h 09m
2 stops
$321Multiple Airlines
Mon, Aug 10 - Mon, Aug 17
Multiple Airlines Logo
8:59 am - 8:54 am
IAD
-
IDA
25h 55m
1 stop
Multiple Airlines Logo
6:37 pm - 5:36 pm
IDA
-
IAD
20h 59m
2 stops
$342Multiple Airlines
Thu, Sep 3 - Fri, Sep 11
Multiple Airlines Logo
9:50 am - 4:05 pm
IAD
-
IDA
8h 15m
1 stop
Multiple Airlines Logo
11:46 am - 6:29 pm
IDA
-
IAD
28h 43m
2 stops
$346Multiple Airlines
Mon, Aug 10 - Wed, Aug 19
United Airlines Logo
6:30 am - 1:29 pm
IAD
-
IDA
8h 59m
1 stop
United Airlines Logo
2:25 pm - 11:19 pm
IDA
-
IAD
6h 54m
1 stop
$349United Airlines
Fri, Aug 28 - Tue, Sep 1
Multiple Airlines Logo
9:50 am - 4:05 pm
IAD
-
IDA
8h 15m
1 stop
Multiple Airlines Logo
5:33 pm - 8:04 am
IDA
-
IAD
12h 31m
1 stop
$350Multiple Airlines
Mon, Aug 17 - Mon, Aug 24
Delta Logo
7:00 am - 2:35 pm
IAD
-
IDA
9h 35m
1 stop
Delta Logo
6:57 pm - 11:45 am
IDA
-
IAD
14h 48m
2 stops
$354Delta
Sat, Aug 29 - Tue, Sep 15
Delta Logo
6:10 am - 2:35 pm
IAD
-
IDA
10h 25m
2 stops
Delta Logo
6:57 pm - 11:45 am
IDA
-
IAD
14h 48m
2 stops
$359Delta
Tue, Aug 25 - Fri, Sep 11
Multiple Airlines Logo
8:59 am - 8:54 am
IAD
-
IDA
25h 55m
1 stop
Multiple Airlines Logo
8:36 pm - 8:04 am
IDA
-
IAD
9h 28m
1 stop
$364Multiple Airlines
Thu, Sep 3 - Mon, Sep 7

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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
Aug 28
IAD6:30 amWashington, D.C. Dulles Intl
8h 59m
1 stop
IDA1:29 pmIdaho Falls Fanning Field
Sep 1
IDA2:25 pmIdaho Falls Fanning Field
6h 54m
1 stop
IAD11:19 pmWashington, D.C. Dulles Intl
$349
United Airlines
Aug 20
IAD6:30 amWashington, D.C. Dulles Intl
8h 59m
1 stop
IDA1:29 pmIdaho Falls Fanning Field
Aug 24
IDA4:04 pmIdaho Falls Fanning Field
6h 28m
1 stop
IAD12:32 amWashington, D.C. Dulles Intl
$382
United Airlines
Aug 16
IAD6:30 amWashington, D.C. Dulles Intl
8h 59m
1 stop
IDA1:29 pmIdaho Falls Fanning Field
Aug 24
IDA4:04 pmIdaho Falls Fanning Field
6h 28m
1 stop
IAD12:32 amWashington, D.C. Dulles Intl
$390

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
Aug 24
IAD6:09 amWashington, D.C. Dulles Intl
7h 21m
1 stop
IDA11:30 amIdaho Falls Fanning Field
Aug 29
IDA7:00 amIdaho Falls Fanning Field
9h 27m
1 stop
IAD6:27 pmWashington, D.C. Dulles Intl
$444
American Airlines
Aug 11
IAD6:09 amWashington, D.C. Dulles Intl
7h 21m
1 stop
IDA11:30 amIdaho Falls Fanning Field
Aug 18
IDA7:00 amIdaho Falls Fanning Field
9h 27m
1 stop
IAD6:27 pmWashington, D.C. Dulles Intl
$469
American Airlines
Aug 28
IAD6:09 amWashington, D.C. Dulles Intl
7h 21m
1 stop
IDA11:30 amIdaho Falls Fanning Field
Sep 1
IDA7:00 amIdaho Falls Fanning Field
11h 56m
2 stops
IAD8:56 pmWashington, D.C. Dulles Intl
$477

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 July 11, 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

Mon 8/17

9:50 am-4:05 pm

1 stop8h 15m

Idaho Falls Fanning Field

Mon 8/24

5:33 pm-10:07 am

2 stops14h 34m

$288

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 8/10

9:50 am-4:05 pm

1 stop8h 15m

Idaho Falls Fanning Field

Mon 8/17

10:54 pm-8:04 am

1 stop31h 10m

$320

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 8/10

9:50 am-4:05 pm

1 stop8h 15m

Idaho Falls Fanning Field

Mon 8/17

3:55 pm-8:04 am

2 stops14h 09m

$321

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 9/3

8:59 am-8:54 am

1 stop25h 55m

Idaho Falls Fanning Field

Fri 9/11

6:37 pm-5:36 pm

2 stops20h 59m

$342

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 8/10

9:50 am-4:05 pm

1 stop8h 15m

Idaho Falls Fanning Field

Wed 8/19

11:46 am-6:29 pm

2 stops28h 43m

$346
Quickest round-trip

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Fri 8/28

6:30 am-1:29 pm

1 stop8h 59m

Idaho Falls Fanning Field

Tue 9/1

2:25 pm-11:19 pm

1 stop6h 54m

$349

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 8/17

9:50 am-4:05 pm

1 stop8h 15m

Idaho Falls Fanning Field

Mon 8/24

5:33 pm-8:04 am

1 stop12h 31m

$350

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sat 8/29

7:00 am-2:35 pm

1 stop9h 35m

Idaho Falls Fanning Field

Tue 9/15

6:57 pm-11:45 am

2 stops14h 48m

$354

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 8/25

6:10 am-2:35 pm

2 stops10h 25m

Idaho Falls Fanning Field

Fri 9/11

6:57 pm-11:45 am

2 stops14h 48m

$359

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Thu 9/3

8:59 am-8:54 am

1 stop25h 55m

Idaho Falls Fanning Field

Mon 9/7

8:36 pm-8:04 am

1 stop9h 28m

$364

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

What is the cheapest airline that flies from Washington, D.C. Dulles Intl to Idaho Falls Fanning Field?

Delta is the most popular carrier operating from Washington, D.C. Dulles Intl to Idaho Falls Fanning Field

What airlines fly to Idaho Falls?

United Airlines, American Airlines and Alaska Airlines are the top three most popular airlines that fly to Idaho Falls from Washington, D.C. Dulles Intl Airport according to our data. United Airlines is the first choice among our users, with 85% of people opting to fly with this airline when traveling to Idaho Falls. Keep in mind that there are 3 different airlines that fly to Idaho Falls on a routine basis, so you have a few additional options to choose from.

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

6h 26m

Direct flights

None
The fastest flight from Washington, D.C. Dulles Intl Airport to Idaho Falls takes 6h 26m
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 6h 26m.

  • 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 $333Free CancellationRating
7.4
9,976 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $433Free CancellationRating
7.9
12,657 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

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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