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Cheap flights from Washington, D.C. Reagan-National Airport to Idaho Falls from $175

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 9/5. 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

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.
Delta Logo
5:59 pm - 10:32 pm
DCA
-
IDA
6h 33m
1 stop
Delta Logo
6:00 am - 4:44 pm
IDA
-
DCA
8h 44m
1 stop
$404Delta
Thu, Aug 20 - Fri, Aug 28
Delta Logo
5:59 pm - 10:32 pm
DCA
-
IDA
6h 33m
1 stop
Delta Logo
6:00 am - 4:44 pm
IDA
-
DCA
8h 44m
1 stop
$429Delta
Thu, Aug 20 - Fri, Aug 28
Delta Logo
5:59 pm - 10:32 pm
DCA
-
IDA
6h 33m
1 stop
Delta Logo
7:00 pm - 10:09 am
IDA
-
DCA
13h 09m
2 stops
$434Delta
Thu, Aug 20 - Fri, Aug 28
Alaska Airlines Logo
8:00 am - 3:35 pm
DCA
-
IDA
9h 35m
1 stop
Alaska Airlines Logo
6:09 am - 4:25 pm
IDA
-
DCA
8h 16m
1 stop
$468Alaska Airlines
Tue, Oct 27 - Sat, Oct 31
Alaska Airlines Logo
8:00 am - 3:35 pm
DCA
-
IDA
9h 35m
1 stop
Alaska Airlines Logo
6:09 am - 4:25 pm
IDA
-
DCA
8h 16m
1 stop
$474Alaska Airlines
Tue, Oct 27 - Sat, Oct 31
American Airlines Logo
5:00 am - 11:30 am
DCA
-
IDA
8h 30m
1 stop
American Airlines Logo
1:43 pm - 11:59 pm
IDA
-
DCA
8h 16m
1 stop
$487American Airlines
Sun, Aug 16 - Fri, Aug 21
Delta Logo
5:59 pm - 10:32 pm
DCA
-
IDA
6h 33m
1 stop
Delta Logo
7:00 pm - 10:09 am
IDA
-
DCA
13h 09m
2 stops
$489Delta
Thu, Aug 20 - Fri, Aug 28
Delta Logo
5:59 pm - 10:32 pm
DCA
-
IDA
6h 33m
1 stop
Delta Logo
6:00 am - 4:44 pm
IDA
-
DCA
8h 44m
1 stop
$509Delta
Thu, Aug 20 - Wed, Aug 26
Delta Logo
5:59 pm - 10:32 pm
DCA
-
IDA
6h 33m
1 stop
Delta Logo
7:00 pm - 10:09 am
IDA
-
DCA
13h 09m
2 stops
$519Delta
Mon, Aug 17 - Thu, Aug 20
Alaska Airlines Logo
5:16 pm - 1:06 pm
DCA
-
IDA
21h 50m
1 stop
Alaska Airlines Logo
3:57 pm - 4:00 pm
IDA
-
DCA
22h 03m
1 stop
$534Alaska Airlines
Mon, Aug 17 - Thu, Aug 20

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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
Aug 16
DCA5:00 amWashington, D.C. Reagan-National
8h 30m
1 stop
IDA11:30 amIdaho Falls Fanning Field
Aug 21
IDA1:43 pmIdaho Falls Fanning Field
8h 16m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
$487
American Airlines
Jul 20
DCA3:13 pmWashington, D.C. Reagan-National
8h 58m
1 stop
IDA10:11 pmIdaho Falls Fanning Field
Jul 28
IDA1:53 pmIdaho Falls Fanning Field
8h 06m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
$598
American Airlines
Jul 20
DCA3:13 pmWashington, D.C. Reagan-National
8h 58m
1 stop
IDA10:11 pmIdaho Falls Fanning Field
Jul 29
IDA12:53 pmIdaho Falls Fanning Field
9h 06m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
$609

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
Aug 20
DCA5:59 pmWashington, D.C. Reagan-National
6h 33m
1 stop
IDA10:32 pmIdaho Falls Fanning Field
Aug 28
IDA6:00 amIdaho Falls Fanning Field
8h 44m
1 stop
DCA4:44 pmWashington, D.C. Reagan-National
$404
Delta
Aug 20
DCA5:59 pmWashington, D.C. Reagan-National
6h 33m
1 stop
IDA10:32 pmIdaho Falls Fanning Field
Aug 28
IDA6:00 amIdaho Falls Fanning Field
8h 44m
1 stop
DCA4:44 pmWashington, D.C. Reagan-National
$429
Delta
Aug 20
DCA5:59 pmWashington, D.C. Reagan-National
6h 33m
1 stop
IDA10:32 pmIdaho Falls Fanning Field
Aug 28
IDA7:00 pmIdaho Falls Fanning Field
13h 09m
2 stops
DCA10:09 amWashington, D.C. Reagan-National
$434

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 July 4, 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

Cheapest round-trip
Quickest round-trip

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 8/20

5:59 pm-10:32 pm

1 stop6h 33m

Idaho Falls Fanning Field

Fri 8/28

6:00 am-4:44 pm

1 stop8h 44m

$404

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 8/20

5:59 pm-10:32 pm

1 stop6h 33m

Idaho Falls Fanning Field

Fri 8/28

6:00 am-4:44 pm

1 stop8h 44m

$429

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 8/20

5:59 pm-10:32 pm

1 stop6h 33m

Idaho Falls Fanning Field

Fri 8/28

7:00 pm-10:09 am

2 stops13h 09m

$434

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 10/27

8:00 am-3:35 pm

1 stop9h 35m

Idaho Falls Fanning Field

Sat 10/31

6:09 am-4:25 pm

1 stop8h 16m

$468

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Tue 10/27

8:00 am-3:35 pm

1 stop9h 35m

Idaho Falls Fanning Field

Sat 10/31

6:09 am-4:25 pm

1 stop8h 16m

$474

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Sun 8/16

5:00 am-11:30 am

1 stop8h 30m

Idaho Falls Fanning Field

Fri 8/21

1:43 pm-11:59 pm

1 stop8h 16m

$487

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 8/20

5:59 pm-10:32 pm

1 stop6h 33m

Idaho Falls Fanning Field

Fri 8/28

7:00 pm-10:09 am

2 stops13h 09m

$489

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Thu 8/20

5:59 pm-10:32 pm

1 stop6h 33m

Idaho Falls Fanning Field

Wed 8/26

6:00 am-4:44 pm

1 stop8h 44m

$509

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 8/17

5:59 pm-10:32 pm

1 stop6h 33m

Idaho Falls Fanning Field

Thu 8/20

7:00 pm-10:09 am

2 stops13h 09m

$519

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

Mon 8/17

5:16 pm-1:06 pm

1 stop21h 50m

Idaho Falls Fanning Field

Thu 8/20

3:57 pm-4:00 pm

1 stop22h 03m

$534

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

Can stopping save me money on Washington, D.C. Reagan-National Airport to Idaho Falls flights?

You could potentially save up to 67% on your flight if you consider stops on a Washington, D.C. Reagan-National Airport to Idaho Falls flight.

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 47m

Direct flights

None
The fastest flight from Washington, D.C. Reagan-National Airport to Idaho Falls takes 6h 47m
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

Frequently asked questions about flying from Washington, D.C. Reagan-National Airport to Idaho Falls

  • 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 47m, 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 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.

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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