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Cheap flights from Washington, D.C. Reagan-National Airport to Idaho Falls from $211

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 4/6. 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

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 3:40 pm
DCA
-
IDA
11h 40m
2 stops
United Airlines Logo
6:36 am - 2:59 pm
IDA
-
DCA
6h 23m
1 stop
$498United Airlines
Tue, Mar 3 - Sat, Mar 7
American Airlines Logo
6:00 am - 1:13 pm
DCA
-
IDA
9h 13m
1 stop
American Airlines Logo
7:48 am - 9:28 pm
IDA
-
DCA
11h 40m
2 stops
$509American Airlines
Thu, Apr 16 - Sat, Apr 18
American Airlines Logo
6:45 am - 12:16 pm
DCA
-
IDA
7h 31m
1 stop
American Airlines Logo
12:46 pm - 11:40 pm
IDA
-
DCA
8h 54m
1 stop
$512American Airlines
Mon, Aug 10 - Thu, Aug 13
American Airlines Logo
6:57 am - 1:13 pm
DCA
-
IDA
8h 16m
1 stop
American Airlines Logo
7:48 am - 10:55 pm
IDA
-
DCA
13h 07m
2 stops
$525American Airlines
Mon, May 4 - Sat, May 9
Delta Logo
5:10 pm - 10:21 pm
DCA
-
IDA
7h 11m
1 stop
Delta Logo
5:25 am - 4:00 pm
IDA
-
DCA
8h 35m
1 stop
$544Delta
Tue, Mar 3 - Sat, Mar 7
Delta Logo
2:55 pm - 10:40 pm
DCA
-
IDA
9h 45m
2 stops
Delta Logo
6:00 am - 4:54 pm
IDA
-
DCA
8h 54m
2 stops
$553Delta
Mon, May 4 - Sat, May 9
American Airlines Logo
3:21 pm - 11:24 pm
DCA
-
IDA
10h 03m
2 stops
American Airlines Logo
6:18 am - 8:54 pm
IDA
-
DCA
12h 36m
2 stops
$556American Airlines
Tue, Mar 3 - Sat, Mar 7
American Airlines Logo
6:00 am - 1:13 pm
DCA
-
IDA
9h 13m
1 stop
American Airlines Logo
1:43 pm - 10:56 pm
IDA
-
DCA
7h 13m
1 stop
$559American Airlines
Thu, Apr 16 - Sat, Apr 18
Alaska Airlines Logo
5:16 pm - 1:22 pm
DCA
-
IDA
22h 06m
1 stop
Alaska Airlines Logo
4:14 pm - 8:02 pm
IDA
-
DCA
25h 48m
2 stops
$569Alaska Airlines
Mon, Aug 10 - Thu, Aug 13
American Airlines Logo
7:39 am - 1:23 pm
DCA
-
IDA
7h 44m
1 stop
American Airlines Logo
12:41 pm - 8:59 pm
IDA
-
DCA
6h 18m
1 stop
$575American Airlines
Tue, Jun 30 - Thu, Jul 16

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
Mar 3
DCA5:10 pmWashington, D.C. Reagan-National
7h 11m
1 stop
IDA10:21 pmIdaho Falls Fanning Field
Mar 7
IDA5:25 amIdaho Falls Fanning Field
8h 35m
1 stop
DCA4:00 pmWashington, D.C. Reagan-National
$544
Delta
May 4
DCA2:55 pmWashington, D.C. Reagan-National
9h 45m
2 stops
IDA10:40 pmIdaho Falls Fanning Field
May 9
IDA6:00 amIdaho Falls Fanning Field
8h 54m
2 stops
DCA4:54 pmWashington, D.C. Reagan-National
$553
Delta
Apr 17
DCA5:10 pmWashington, D.C. Reagan-National
7h 30m
1 stop
IDA10:40 pmIdaho Falls Fanning Field
Apr 19
IDA6:58 pmIdaho Falls Fanning Field
13h 21m
2 stops
DCA10:19 amWashington, D.C. Reagan-National
$663

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

Our best American Airlines deals on Washington, D.C. Reagan-National Airport to Idaho Falls flight tickets
American Airlines
Apr 16
DCA6:00 amWashington, D.C. Reagan-National
9h 13m
1 stop
IDA1:13 pmIdaho Falls Fanning Field
Apr 18
IDA7:48 amIdaho Falls Fanning Field
11h 40m
2 stops
DCA9:28 pmWashington, D.C. Reagan-National
$509
American Airlines
Aug 10
DCA6:45 amWashington, D.C. Reagan-National
7h 31m
1 stop
IDA12:16 pmIdaho Falls Fanning Field
Aug 13
IDA12:46 pmIdaho Falls Fanning Field
8h 54m
1 stop
DCA11:40 pmWashington, D.C. Reagan-National
$512
American Airlines
May 4
DCA6:57 amWashington, D.C. Reagan-National
8h 16m
1 stop
IDA1:13 pmIdaho Falls Fanning Field
May 9
IDA7:48 amIdaho Falls Fanning Field
13h 07m
2 stops
DCA10:55 pmWashington, D.C. Reagan-National
$525

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 February 18, 2026.
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

Tue 3/3

6:00 am-3:40 pm

2 stops11h 40m

Idaho Falls Fanning Field

Sat 3/7

6:36 am-2:59 pm

1 stop6h 23m

$498

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 4/16

6:00 am-1:13 pm

1 stop9h 13m

Idaho Falls Fanning Field

Sat 4/18

7:48 am-9:28 pm

2 stops11h 40m

$509

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 8/10

6:45 am-12:16 pm

1 stop7h 31m

Idaho Falls Fanning Field

Thu 8/13

12:46 pm-11:40 pm

1 stop8h 54m

$512

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 5/4

6:57 am-1:13 pm

1 stop8h 16m

Idaho Falls Fanning Field

Sat 5/9

7:48 am-10:55 pm

2 stops13h 07m

$525

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 3/3

5:10 pm-10:21 pm

1 stop7h 11m

Idaho Falls Fanning Field

Sat 3/7

5:25 am-4:00 pm

1 stop8h 35m

$544

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 5/4

2:55 pm-10:40 pm

2 stops9h 45m

Idaho Falls Fanning Field

Sat 5/9

6:00 am-4:54 pm

2 stops8h 54m

$553

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 3/3

3:21 pm-11:24 pm

2 stops10h 03m

Idaho Falls Fanning Field

Sat 3/7

6:18 am-8:54 pm

2 stops12h 36m

$556

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 4/16

6:00 am-1:13 pm

1 stop9h 13m

Idaho Falls Fanning Field

Sat 4/18

1:43 pm-10:56 pm

1 stop7h 13m

$559

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 8/10

5:16 pm-1:22 pm

1 stop22h 06m

Idaho Falls Fanning Field

Thu 8/13

4:14 pm-8:02 pm

2 stops25h 48m

$569

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 6/30

7:39 am-1:23 pm

1 stop7h 44m

Idaho Falls Fanning Field

Thu 7/16

12:41 pm-8:59 pm

1 stop6h 18m

$575

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. 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 airline that flies from Washington, D.C. Reagan-National to Idaho Falls Fanning Field?

Delta, American Airlines, and Alaska Airlines are the most popular carriers operating from Washington, D.C. Reagan-National to Idaho Falls Fanning Field

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

7h 14m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Idaho Falls takes 7h 14m
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 7h 14m, 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
11,313 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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