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Cheap flights from Washington, D.C. Dulles Intl Airport to Idaho Falls from $198

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 10/4. 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

Alaska Airlines Logo
7:00 am - 3:23 pmIAD-IDA
10h 23m1 stop
Alaska Airlines Logo
4:00 pm - 5:55 amIDA-IAD
11h 55m1 stop
$394Alaska Airlines
Find Deal
Wed, Feb 18 - Fri, Feb 27
United Airlines Logo
5:47 pm - 10:48 pmIAD-IDA
7h 01m1 stop
United Airlines Logo
5:00 am - 3:34 pmIDA-IAD
8h 34m1 stop
$395United Airlines
Find Deal
Mon, Sep 22 - Tue, Sep 23
Alaska Airlines Logo
6:09 pm - 3:20 pmIAD-IDA
23h 11m1 stop
Alaska Airlines Logo
3:57 pm - 4:52 pmIDA-IAD
22h 55m2 stops
$444Alaska Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
Alaska Airlines Logo
9:00 am - 10:39 pmIAD-IDA
15h 39m1 stop
Alaska Airlines Logo
3:57 pm - 7:33 amIDA-IAD
13h 36m1 stop
$452Alaska Airlines
Find Deal
Tue, Sep 23 - Tue, Sep 30
United Airlines Logo
5:47 pm - 10:48 pmIAD-IDA
7h 01m1 stop
United Airlines Logo
2:35 pm - 11:17 pmIDA-IAD
6h 42m1 stop
$475United Airlines
Find Deal
Sun, Sep 21 - Mon, Sep 22
American Airlines Logo
12:48 pm - 9:25 pmIAD-IDA
10h 37m2 stops
American Airlines Logo
1:35 pm - 10:45 pmIDA-IAD
7h 10m1 stop
$478American Airlines
Find Deal
Mon, Sep 22 - Tue, Sep 23
Alaska Airlines Logo
5:51 pm - 10:38 pmIAD-IDA
30h 47m2 stops
Alaska Airlines Logo
4:00 pm - 5:55 amIDA-IAD
11h 55m1 stop
$486Alaska Airlines
Find Deal
Wed, Feb 18 - Fri, Feb 27
Delta Logo
7:05 am - 12:26 pmIAD-IDA
7h 21m1 stop
Delta Logo
6:51 pm - 9:09 amIDA-IAD
12h 18m2 stops
$492Delta
Find Deal
Mon, Sep 22 - Mon, Sep 22
American Airlines Logo
8:52 am - 9:57 pmIAD-IDA
15h 05m2 stops
American Airlines Logo
1:34 pm - 8:40 amIDA-IAD
17h 06m2 stops
$522American Airlines
Find Deal
Wed, Feb 18 - Fri, Feb 27
Delta Logo
7:35 am - 6:11 pmIAD-IDA
12h 36m2 stops
Delta Logo
6:51 pm - 9:09 amIDA-IAD
12h 18m2 stops
$592Delta
Find Deal
Mon, Sep 22 - Tue, Sep 23

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
Feb 18
IAD7:00 amWashington, D.C. Dulles Intl
10h 23m
1 stop
IDA3:23 pmIdaho Falls Fanning Field
Feb 27
IDA4:00 pmIdaho Falls Fanning Field
11h 55m
1 stop
IAD5:55 amWashington, D.C. Dulles Intl
$394
Find similar
Alaska Airlines
Sep 23
IAD6:09 pmWashington, D.C. Dulles Intl
23h 11m
1 stop
IDA3:20 pmIdaho Falls Fanning Field
Sep 30
IDA3:57 pmIdaho Falls Fanning Field
22h 55m
2 stops
IAD4:52 pmWashington, D.C. Dulles Intl
$444
Find similar
Alaska Airlines
Sep 23
IAD9:00 amWashington, D.C. Dulles Intl
15h 39m
1 stop
IDA10:39 pmIdaho Falls Fanning Field
Sep 30
IDA3:57 pmIdaho Falls Fanning Field
13h 36m
1 stop
IAD7:33 amWashington, D.C. Dulles Intl
$452
Find similar

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 22
IAD12:48 pmWashington, D.C. Dulles Intl
10h 37m
2 stops
IDA9:25 pmIdaho Falls Fanning Field
Sep 23
IDA1:35 pmIdaho Falls Fanning Field
7h 10m
1 stop
IAD10:45 pmWashington, D.C. Dulles Intl
$478
Find similar
American Airlines
Feb 18
IAD8:52 amWashington, D.C. Dulles Intl
15h 05m
2 stops
IDA9:57 pmIdaho Falls Fanning Field
Feb 27
IDA1:34 pmIdaho Falls Fanning Field
17h 06m
2 stops
IAD8:40 amWashington, D.C. Dulles Intl
$522
Find similar
American Airlines
Oct 16
IAD8:25 pmWashington, D.C. Dulles Intl
18h 16m
2 stops
IDA12:41 pmIdaho Falls Fanning Field
Oct 20
IDA1:11 pmIdaho Falls Fanning Field
18h 44m
2 stops
IAD9:55 amWashington, D.C. Dulles Intl
$547
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 August 27, 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

Wed 2/18

7:00 am-3:23 pm

1 stop10h 23m

Idaho Falls Fanning Field

Fri 2/27

4:00 pm-5:55 am

1 stop11h 55m

$394

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 9/22

5:47 pm-10:48 pm

1 stop7h 01m

Idaho Falls Fanning Field

Tue 9/23

5:00 am-3:34 pm

1 stop8h 34m

$395

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 9/23

6:09 pm-3:20 pm

1 stop23h 11m

Idaho Falls Fanning Field

Tue 9/30

3:57 pm-4:52 pm

2 stops22h 55m

$444

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Tue 9/23

9:00 am-10:39 pm

1 stop15h 39m

Idaho Falls Fanning Field

Tue 9/30

3:57 pm-7:33 am

1 stop13h 36m

$452

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Sun 9/21

5:47 pm-10:48 pm

1 stop7h 01m

Idaho Falls Fanning Field

Mon 9/22

2:35 pm-11:17 pm

1 stop6h 42m

$475

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 9/22

12:48 pm-9:25 pm

2 stops10h 37m

Idaho Falls Fanning Field

Tue 9/23

1:35 pm-10:45 pm

1 stop7h 10m

$478

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 2/18

5:51 pm-10:38 pm

2 stops30h 47m

Idaho Falls Fanning Field

Fri 2/27

4:00 pm-5:55 am

1 stop11h 55m

$486

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 9/22

7:05 am-12:26 pm

1 stop7h 21m

Idaho Falls Fanning Field

Mon 9/22

6:51 pm-9:09 am

2 stops12h 18m

$492

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Wed 2/18

8:52 am-9:57 pm

2 stops15h 05m

Idaho Falls Fanning Field

Fri 2/27

1:34 pm-8:40 am

2 stops17h 06m

$522

Washington, D.C.Idaho Falls

IAD - IDA

IADIDA

Washington, D.C. Dulles Intl

Mon 9/22

7:35 am-6:11 pm

2 stops12h 36m

Idaho Falls Fanning Field

Tue 9/23

6:51 pm-9:09 am

2 stops12h 18m

$592

Flights are sorted by cheapest round-trip flights 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 typical price of a round-trip flight between Washington, D.C. Dulles Intl Airport and Idaho Falls?

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 55% 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

Direct flights

None
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 6h 46m.

  • 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 $408Free CancellationRating
7.4
8,945 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
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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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