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Cheap flights from Washington, D.C. Reagan-National Airport to Idaho Falls from $344

This is the cheapest round-trip 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 1/16. 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.
Alaska Airlines Logo
5:01 pm - 6:18 pmDCA-IDA
27h 17m1 stop
Alaska Airlines Logo
9:00 am - 9:59 pmIDA-DCA
10h 59m1 stop
$344Alaska Airlines
Find Deal
vie., ene. 16 - mié., ene. 21
Alaska Airlines Logo
8:00 am - 10:59 pmDCA-IDA
16h 59m1 stop
Alaska Airlines Logo
9:00 am - 9:59 pmIDA-DCA
10h 59m1 stop
$382Alaska Airlines
Find Deal
sáb., ene. 17 - mié., ene. 21
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
$394Alaska Airlines
Find Deal
mié., feb. 18 - vie., feb. 27
Alaska Airlines Logo
6:56 pm - 10:59 pmDCA-IDA
30h 03m2 stops
Alaska Airlines Logo
6:58 pm - 5:56 pmIDA-DCA
20h 58m2 stops
$395Alaska Airlines
Find Deal
vie., ene. 16 - mié., ene. 21
American Airlines Logo
6:30 am - 1:37 pmDCA-IDA
9h 07m1 stop
American Airlines Logo
7:20 am - 9:00 pmIDA-DCA
11h 40m2 stops
$420American Airlines
Find Deal
vie., ene. 16 - mié., ene. 21
American Airlines Logo
11:50 am - 10:36 pmDCA-IDA
12h 46m2 stops
American Airlines Logo
7:20 am - 7:44 pmIDA-DCA
10h 24m2 stops
$425American Airlines
Find Deal
sáb., ene. 17 - mié., ene. 21
Delta Logo
10:20 am - 10:19 pmDCA-IDA
13h 59m2 stops
Delta Logo
6:00 am - 5:59 pmIDA-DCA
9h 59m2 stops
$536Delta
Find Deal
mié., nov. 19 - dom., nov. 23
Delta Logo
10:00 am - 10:21 pmDCA-IDA
14h 21m2 stops
Delta Logo
6:45 pm - 6:06 pmIDA-DCA
21h 21m2 stops
$590Delta
Find Deal
mar., mar. 10 - mié., mar. 11
United Airlines Logo
6:00 pm - 9:58 amDCA-IDA
17h 58m2 stops
United Airlines Logo
5:00 am - 8:59 pmIDA-DCA
13h 59m2 stops
$794United Airlines
Find Deal
lun., dic. 22 - lun., dic. 29
United Airlines Logo
5:00 pm - 9:58 amDCA-IDA
18h 58m2 stops
United Airlines Logo
5:00 am - 8:59 pmIDA-DCA
13h 59m2 stops
$800United Airlines
Find Deal
lun., dic. 22 - lun., dic. 29

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
Jan 16
DCA5:01 pmWashington, D.C. Reagan-National
27h 17m
1 stop
IDA6:18 pmIdaho Falls Fanning Field
Jan 21
IDA9:00 amIdaho Falls Fanning Field
10h 59m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$344
Find similar
Alaska Airlines
Jan 17
DCA8:00 amWashington, D.C. Reagan-National
16h 59m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
Jan 21
IDA9:00 amIdaho Falls Fanning Field
10h 59m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
$382
Find similar
Alaska Airlines
Feb 18
DCA8:00 amWashington, D.C. Reagan-National
9h 23m
1 stop
IDA3:23 pmIdaho Falls Fanning Field
Feb 27
IDA8:00 amIdaho Falls Fanning Field
11h 55m
1 stop
DCA9:55 pmWashington, D.C. Reagan-National
$394
Find similar

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
Jan 16
DCA6:30 amWashington, D.C. Reagan-National
9h 07m
1 stop
IDA1:37 pmIdaho Falls Fanning Field
Jan 21
IDA7:20 amIdaho Falls Fanning Field
11h 40m
2 stops
DCA9:00 pmWashington, D.C. Reagan-National
$420
Find similar
American Airlines
Jan 17
DCA11:50 amWashington, D.C. Reagan-National
12h 46m
2 stops
IDA10:36 pmIdaho Falls Fanning Field
Jan 21
IDA7:20 amIdaho Falls Fanning Field
10h 24m
2 stops
DCA7:44 pmWashington, D.C. Reagan-National
$425
Find similar
American Airlines
Dec 2
DCA1:44 pmWashington, D.C. Reagan-National
10h 50m
2 stops
IDA10:34 pmIdaho Falls Fanning Field
Dec 9
IDA1:58 pmIdaho Falls Fanning Field
7h 02m
1 stop
DCA11:00 pmWashington, D.C. Reagan-National
$489
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 noviembre 5, 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

vie. 1/16

5:01 pm-6:18 pm

1 stop27h 17m

Idaho Falls Fanning Field

mié. 1/21

9:00 am-9:59 pm

1 stop10h 59m

$344

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

sáb. 1/17

8:00 am-10:59 pm

1 stop16h 59m

Idaho Falls Fanning Field

mié. 1/21

9:00 am-9:59 pm

1 stop10h 59m

$382

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

mié. 2/18

8:00 am-3:23 pm

1 stop9h 23m

Idaho Falls Fanning Field

vie. 2/27

8:00 am-9:55 pm

1 stop11h 55m

$394

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

vie. 1/16

6:56 pm-10:59 pm

2 stops30h 03m

Idaho Falls Fanning Field

mié. 1/21

6:58 pm-5:56 pm

2 stops20h 58m

$395

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

vie. 1/16

6:30 am-1:37 pm

1 stop9h 07m

Idaho Falls Fanning Field

mié. 1/21

7:20 am-9:00 pm

2 stops11h 40m

$420

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

sáb. 1/17

11:50 am-10:36 pm

2 stops12h 46m

Idaho Falls Fanning Field

mié. 1/21

7:20 am-7:44 pm

2 stops10h 24m

$425

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

mié. 11/19

10:20 am-10:19 pm

2 stops13h 59m

Idaho Falls Fanning Field

dom. 11/23

6:00 am-5:59 pm

2 stops9h 59m

$536

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

mar. 3/10

10:00 am-10:21 pm

2 stops14h 21m

Idaho Falls Fanning Field

mié. 3/11

6:45 pm-6:06 pm

2 stops21h 21m

$590

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

lun. 12/22

6:00 pm-9:58 am

2 stops17h 58m

Idaho Falls Fanning Field

lun. 12/29

5:00 am-8:59 pm

2 stops13h 59m

$794

Washington, D.C.Idaho Falls

DCA - IDA

DCAIDA

Washington, D.C. Reagan-National

lun. 12/22

5:00 pm-9:58 am

2 stops18h 58m

Idaho Falls Fanning Field

lun. 12/29

5:00 am-8:59 pm

2 stops13h 59m

$800

Flights are sorted by cheapest round-trip flights first.

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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 7h 09m, 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
11,042 reviews
Search American Airlines flights

Traveling to a place near Idaho Falls?

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Rexburg

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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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