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Cheap flights from Washington, D.C. Reagan-National Airport to Idaho Falls from $241

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. Reagan-National Airport to Idaho Falls departing on 10/20. 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. Reagan-National Airport to Idaho Falls

Cheap round-trip flights

American Airlines Logo
6:30 am - 12:25 pmDCA-IDA
7h 55m1 stop
American Airlines Logo
1:34 pm - 12:40 amIDA-DCA
9h 06m1 stop
$414American Airlines
Find Deal
Wed, Feb 18 - Fri, Feb 27
American Airlines Logo
6:07 am - 12:20 pmDCA-IDA
8h 13m1 stop
American Airlines Logo
1:44 pm - 11:00 pmIDA-DCA
7h 16m1 stop
$415American Airlines
Find Deal
Fri, Jan 30 - Sun, Feb 8
American Airlines Logo
5:06 am - 12:25 pmDCA-IDA
9h 19m2 stops
American Airlines Logo
1:34 pm - 12:40 amIDA-DCA
9h 06m1 stop
$419American Airlines
Find Deal
Wed, Feb 18 - Fri, Feb 27
Alaska Airlines Logo
8:00 am - 3:23 pmDCA-IDA
9h 23m1 stop
Alaska Airlines Logo
8:00 am - 9:55 pmIDA-DCA
11h 55m1 stop
$467Alaska Airlines
Find Deal
Tue, Mar 3 - Wed, Mar 4
Delta Logo
5:15 pm - 10:21 pmDCA-IDA
7h 06m1 stop
Delta Logo
6:00 am - 6:01 pmIDA-DCA
10h 01m2 stops
$472Delta
Find Deal
Sun, Feb 8 - Sat, Feb 14
Delta Logo
5:15 pm - 10:21 pmDCA-IDA
7h 06m1 stop
Delta Logo
6:00 am - 7:17 pmIDA-DCA
11h 17m2 stops
$511Delta
Find Deal
Tue, Mar 3 - Wed, Mar 4
Alaska Airlines Logo
5:10 pm - 3:23 pmDCA-IDA
24h 13m2 stops
Alaska Airlines Logo
8:00 am - 8:55 pmIDA-DCA
34h 55m2 stops
$543Alaska Airlines
Find Deal
Fri, Jan 30 - Sun, Feb 8
Hawaiian Airlines Logo
8:00 am - 3:38 pmDCA-IDA
9h 38m1 stop
Hawaiian Airlines Logo
6:00 am - 4:48 pmIDA-DCA
8h 48m1 stop
$681Hawaiian Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
United Airlines Logo
4:23 pm - 9:48 amDCA-IDA
19h 25m1 stop
United Airlines Logo
5:00 am - 3:07 pmIDA-DCA
8h 07m1 stop
$744United Airlines
Find Deal
Wed, Oct 8 - Sun, Oct 12
United Airlines Logo
4:23 pm - 8:52 pmDCA-IDA
6h 29m1 stop
United Airlines Logo
5:00 am - 3:07 pmIDA-DCA
8h 07m1 stop
$749United Airlines
Find Deal
Wed, Oct 1 - Sun, Oct 5

Alaska Airlines flights from Washington, D.C. Reagan-National Airport to Idaho Falls

Our best Alaska Airlines deals on Washington, D.C. Reagan-National Airport to Idaho Falls flight tickets
Alaska Airlines
Mar 3
DCA8:00 amWashington, D.C. Reagan-National
9h 23m
1 stop
IDA3:23 pmIdaho Falls Fanning Field
Mar 4
IDA8:00 amIdaho Falls Fanning Field
11h 55m
1 stop
DCA9:55 pmWashington, D.C. Reagan-National
$467
Find similar
Alaska Airlines
Jan 30
DCA5:10 pmWashington, D.C. Reagan-National
24h 13m
2 stops
IDA3:23 pmIdaho Falls Fanning Field
Feb 8
IDA8:00 amIdaho Falls Fanning Field
34h 55m
2 stops
DCA8:55 pmWashington, D.C. Reagan-National
$543
Find similar
Alaska Airlines
Oct 8
DCA8:00 amWashington, D.C. Reagan-National
9h 38m
1 stop
IDA3:38 pmIdaho Falls Fanning Field
Oct 12
IDA6:00 amIdaho Falls Fanning Field
12h 29m
2 stops
DCA8:29 pmWashington, D.C. Reagan-National
$665
Find similar

Delta flights from Washington, D.C. Reagan-National Airport to Idaho Falls

Our best Delta deals on Washington, D.C. Reagan-National Airport to Idaho Falls flight tickets
Delta
Feb 8
DCA5:15 pmWashington, D.C. Reagan-National
7h 06m
1 stop
IDA10:21 pmIdaho Falls Fanning Field
Feb 14
IDA6:00 amIdaho Falls Fanning Field
10h 01m
2 stops
DCA6:01 pmWashington, D.C. Reagan-National
$472
Find similar
Delta
Mar 3
DCA5:15 pmWashington, D.C. Reagan-National
7h 06m
1 stop
IDA10:21 pmIdaho Falls Fanning Field
Mar 4
IDA6:00 amIdaho Falls Fanning Field
11h 17m
2 stops
DCA7:17 pmWashington, D.C. Reagan-National
$511
Find similar
Delta
Mar 3
DCA12:59 pmWashington, D.C. Reagan-National
11h 22m
2 stops
IDA10:21 pmIdaho Falls Fanning Field
Mar 4
IDA6:00 amIdaho Falls Fanning Field
11h 17m
2 stops
DCA7:17 pmWashington, D.C. Reagan-National
$516
Find similar

momondo Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 2/18

6:30 am-12:25 pm

1 stop7h 55m

Idaho Falls Fanning Field

Fri 2/27

1:34 pm-12:40 am

1 stop9h 06m

$414

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Fri 1/30

6:07 am-12:20 pm

1 stop8h 13m

Idaho Falls Fanning Field

Sun 2/8

1:44 pm-11:00 pm

1 stop7h 16m

$415

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 2/18

5:06 am-12:25 pm

2 stops9h 19m

Idaho Falls Fanning Field

Fri 2/27

1:34 pm-12:40 am

1 stop9h 06m

$419

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 3/3

8:00 am-3:23 pm

1 stop9h 23m

Idaho Falls Fanning Field

Wed 3/4

8:00 am-9:55 pm

1 stop11h 55m

$467

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sun 2/8

5:15 pm-10:21 pm

1 stop7h 06m

Idaho Falls Fanning Field

Sat 2/14

6:00 am-6:01 pm

2 stops10h 01m

$472

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 3/3

5:15 pm-10:21 pm

1 stop7h 06m

Idaho Falls Fanning Field

Wed 3/4

6:00 am-7:17 pm

2 stops11h 17m

$511

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Fri 1/30

5:10 pm-3:23 pm

2 stops24h 13m

Idaho Falls Fanning Field

Sun 2/8

8:00 am-8:55 pm

2 stops34h 55m

$543

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 10/8

8:00 am-3:38 pm

1 stop9h 38m

Idaho Falls Fanning Field

Sun 10/12

6:00 am-4:48 pm

1 stop8h 48m

$681

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 10/8

4:23 pm-9:48 am

1 stop19h 25m

Idaho Falls Fanning Field

Sun 10/12

5:00 am-3:07 pm

1 stop8h 07m

$744

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 10/1

4:23 pm-8:52 pm

1 stop6h 29m

Idaho Falls Fanning Field

Sun 10/5

5:00 am-3:07 pm

1 stop8h 07m

$749

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. Reagan-National 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. Reagan-National 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.

When to book flights from Washington, D.C. Reagan-National Airport to Idaho Falls

Are you open to changing your travel dates? Check out the ideal times to fly from Washington, D.C. Reagan-National 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. Reagan-National Airport to Idaho Falls (DCA to IDA) flight deals and tips

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

Direct flights

None
There are no direct flights from Washington, D.C. Reagan-National Airport to Idaho Falls. There are no popular flight routes from Washington, D.C. Reagan-National Airport to Idaho Falls.
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  • How far is Washington, D.C. Reagan-National to Idaho Falls Fanning Field by plane?

    Washington, D.C. Reagan-National and Idaho Falls Fanning Field are 1833.0 mi apart from one another. Flights usually cover this in 6h 29m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Washington, D.C. Reagan-National Airport to Idaho Falls Fanning Field Airport refresh daily.

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

  • How old do you have to be to fly from Washington, D.C. Reagan-National Airport 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, D.C. Reagan-National Airport to Idaho Falls Fanning Field Airport.

  • What documentation or ID do you need to fly to Idaho Falls Fanning Field Airport?

    The necessary travel and health documents for your Idaho Falls Fanning Field Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from Washington, D.C. Reagan-National Airport to Idaho Falls?

Best airlines flying from Washington, D.C. Reagan-National Airport to Idaho Falls

Compare and see reviews for airlines that fly from Washington, D.C. Reagan-National Airport to Idaho Falls with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $480Free CancellationRating
7.2
10,000 reviews
Search American 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?

It is quick and easy to find Washington, D.C. to Idaho Falls flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Idaho Falls that suits you.

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

Yes. momondo allows you to filter the results for Washington, D.C. to Idaho Falls flights to just show those with flexible booking policies.

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?

Of course. momondo tracks the price of Washington, D.C. to Idaho Falls flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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