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Cheap flights from Washington, D.C. Reagan-National Airport to Idaho Falls from $176

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 1/15. 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. Reagan-National Airport to Idaho Falls

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
5:01 pm - 6:18 pm
DCA
-
IDA
27h 17m1 stop
Alaska Airlines Logo
9:00 am - 9:59 pm
IDA
-
DCA
10h 59m1 stop
$284Alaska Airlines
Mon, Feb 2 - Tue, Feb 10
Delta Logo
5:10 pm - 10:57 pm
DCA
-
IDA
7h 47m1 stop
Delta Logo
6:35 pm - 3:20 pm
IDA
-
DCA
18h 45m2 stops
$382Delta
Mon, Feb 2 - Tue, Feb 10
Alaska Airlines Logo
8:00 am - 11:36 pm
DCA
-
IDA
17h 36m1 stop
Alaska Airlines Logo
8:00 am - 9:59 pm
IDA
-
DCA
11h 59m1 stop
$384Alaska Airlines
Wed, Feb 18 - Fri, Feb 27
Delta Logo
3:10 pm - 10:57 pm
DCA
-
IDA
9h 47m2 stops
Delta Logo
6:35 pm - 3:20 pm
IDA
-
DCA
18h 45m2 stops
$388Delta
Mon, Feb 2 - Tue, Feb 10
Alaska Airlines Logo
8:00 am - 11:36 pm
DCA
-
IDA
17h 36m1 stop
Alaska Airlines Logo
5:20 pm - 9:59 pm
IDA
-
DCA
26h 39m1 stop
$409Alaska Airlines
Wed, Feb 18 - Fri, Feb 27
Alaska Airlines Logo
5:00 pm - 11:36 pm
DCA
-
IDA
8h 36m1 stop
Alaska Airlines Logo
5:20 pm - 9:02 pm
IDA
-
DCA
25h 42m2 stops
$425Alaska Airlines
Wed, Feb 18 - Fri, Feb 27
American Airlines Logo
11:37 am - 11:07 pm
DCA
-
IDA
13h 30m2 stops
American Airlines Logo
2:02 pm - 11:00 pm
IDA
-
DCA
6h 58m1 stop
$439American Airlines
Wed, Feb 18 - Fri, Feb 27
American Airlines Logo
11:37 am - 11:07 pm
DCA
-
IDA
13h 30m2 stops
American Airlines Logo
6:42 am - 8:46 pm
IDA
-
DCA
12h 04m2 stops
$444American Airlines
Wed, Feb 18 - Fri, Feb 27
Alaska Airlines Logo
5:01 pm - 6:18 pm
DCA
-
IDA
27h 17m1 stop
Alaska Airlines Logo
9:00 am - 5:56 pm
IDA
-
DCA
30h 56m2 stops
$464Alaska Airlines
Sat, Jan 24 - Sun, Feb 1
Alaska Airlines Logo
8:00 am - 6:18 pm
DCA
-
IDA
12h 18m1 stop
Alaska Airlines Logo
6:58 pm - 9:59 pm
IDA
-
DCA
25h 01m1 stop
$524Alaska Airlines
Sat, Jan 24 - Sun, Feb 1

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
Feb 2
DCA5:01 pmWashington, D.C. Reagan-National
27h 17m
1 stop
IDA6:18 pmIdaho Falls Fanning Field
Feb 10
IDA9:00 amIdaho Falls Fanning Field
10h 59m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$284
Find similar
Alaska Airlines
Feb 18
DCA8:00 amWashington, D.C. Reagan-National
17h 36m
1 stop
IDA11:36 pmIdaho Falls Fanning Field
Feb 27
IDA8:00 amIdaho Falls Fanning Field
11h 59m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$384
Find similar
Alaska Airlines
Feb 18
DCA8:00 amWashington, D.C. Reagan-National
17h 36m
1 stop
IDA11:36 pmIdaho Falls Fanning Field
Feb 27
IDA5:20 pmIdaho Falls Fanning Field
26h 39m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$409
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 2
DCA5:10 pmWashington, D.C. Reagan-National
7h 47m
1 stop
IDA10:57 pmIdaho Falls Fanning Field
Feb 10
IDA6:35 pmIdaho Falls Fanning Field
18h 45m
2 stops
DCA3:20 pmWashington, D.C. Reagan-National
$382
Find similar
Delta
Feb 2
DCA3:10 pmWashington, D.C. Reagan-National
9h 47m
2 stops
IDA10:57 pmIdaho Falls Fanning Field
Feb 10
IDA6:35 pmIdaho Falls Fanning Field
18h 45m
2 stops
DCA3:20 pmWashington, D.C. Reagan-National
$388
Find similar
Delta
Dec 22
DCA5:11 pmWashington, D.C. Reagan-National
7h 41m
1 stop
IDA10:52 pmIdaho Falls Fanning Field
Dec 29
IDA5:55 amIdaho Falls Fanning Field
8h 06m
1 stop
DCA4:01 pmWashington, D.C. Reagan-National
$656
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 December 21, 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

Mon 2/2

5:01 pm-6:18 pm

1 stop27h 17m

Idaho Falls Fanning Field

Tue 2/10

9:00 am-9:59 pm

1 stop10h 59m

$284

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 2/2

5:10 pm-10:57 pm

1 stop7h 47m

Idaho Falls Fanning Field

Tue 2/10

6:35 pm-3:20 pm

2 stops18h 45m

$382

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 2/18

8:00 am-11:36 pm

1 stop17h 36m

Idaho Falls Fanning Field

Fri 2/27

8:00 am-9:59 pm

1 stop11h 59m

$384

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 2/2

3:10 pm-10:57 pm

2 stops9h 47m

Idaho Falls Fanning Field

Tue 2/10

6:35 pm-3:20 pm

2 stops18h 45m

$388

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 2/18

8:00 am-11:36 pm

1 stop17h 36m

Idaho Falls Fanning Field

Fri 2/27

5:20 pm-9:59 pm

1 stop26h 39m

$409

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 2/18

5:00 pm-11:36 pm

1 stop8h 36m

Idaho Falls Fanning Field

Fri 2/27

5:20 pm-9:02 pm

2 stops25h 42m

$425

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 2/18

11:37 am-11:07 pm

2 stops13h 30m

Idaho Falls Fanning Field

Fri 2/27

2:02 pm-11:00 pm

1 stop6h 58m

$439

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Wed 2/18

11:37 am-11:07 pm

2 stops13h 30m

Idaho Falls Fanning Field

Fri 2/27

6:42 am-8:46 pm

2 stops12h 04m

$444

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 1/24

5:01 pm-6:18 pm

1 stop27h 17m

Idaho Falls Fanning Field

Sun 2/1

9:00 am-5:56 pm

2 stops30h 56m

$464

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sat 1/24

8:00 am-6:18 pm

1 stop12h 18m

Idaho Falls Fanning Field

Sun 2/1

6:58 pm-9:59 pm

1 stop25h 01m

$524

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. 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

Fastest flight time

6h 49m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Idaho Falls takes 6h 49m
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.
Search flight deals

  • 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 49m, 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
11,050 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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