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Cheap flights from Idaho Falls to Washington, D.C. from $252

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Idaho Falls to Washington, D.C. departing on 12/31. 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 Idaho Falls to Washington, D.C.

Cheap round-trip flights

Alaska Airlines Logo
6:05 am - 4:53 pmIDA-DCA
8h 48m1 stop
Alaska Airlines Logo
8:00 am - 3:13 pmDCA-IDA
9h 13m1 stop
$412Alaska Airlines
Find Deal
Sat, Nov 15 - Tue, Nov 18
Alaska Airlines Logo
6:05 am - 4:53 pmIDA-DCA
8h 48m1 stop
Alaska Airlines Logo
8:00 am - 3:13 pmDCA-IDA
9h 13m1 stop
$413Alaska Airlines
Find Deal
Sat, Nov 8 - Thu, Nov 13
American Airlines Logo
1:11 pm - 10:15 pmIDA-DCA
7h 04m1 stop
American Airlines Logo
6:59 am - 12:24 pmDCA-IDA
7h 25m1 stop
$414American Airlines
Find Deal
Mon, Oct 27 - Sat, Nov 1
American Airlines Logo
1:11 pm - 11:12 pmIDA-DCA
8h 01m1 stop
American Airlines Logo
6:59 am - 12:25 pmDCA-IDA
7h 26m1 stop
$415American Airlines
Find Deal
Mon, Oct 27 - Fri, Oct 31
Delta Logo
6:57 pm - 9:10 amIDA-DCA
12h 13m2 stops
Delta Logo
5:05 pm - 10:33 pmDCA-IDA
7h 28m1 stop
$418Delta
Find Deal
Tue, Nov 11 - Sat, Nov 15
American Airlines Logo
1:11 pm - 10:15 pmIDA-DCA
7h 04m1 stop
American Airlines Logo
12:54 pm - 9:48 pmDCA-IDA
10h 54m2 stops
$419American Airlines
Find Deal
Mon, Oct 27 - Sat, Nov 1
American Airlines Logo
1:11 pm - 10:15 pmIDA-DCA
7h 04m1 stop
American Airlines Logo
12:22 pm - 9:33 pmDCA-IDA
11h 11m2 stops
$420American Airlines
Find Deal
Mon, Oct 27 - Fri, Oct 31
Delta Logo
6:53 pm - 9:10 amIDA-DCA
12h 17m2 stops
Delta Logo
10:20 am - 10:19 pmDCA-IDA
13h 59m2 stops
$423Delta
Find Deal
Sat, Nov 8 - Tue, Nov 11
American Airlines Logo
7:10 am - 10:15 pmIDA-DCA
13h 05m2 stops
American Airlines Logo
1:44 pm - 10:34 pmDCA-IDA
10h 50m2 stops
$424American Airlines
Find Deal
Sat, Nov 8 - Mon, Nov 10
Hawaiian Airlines Logo
6:05 am - 4:53 pmIDA-DCA
8h 48m1 stop
Hawaiian Airlines Logo
8:00 am - 3:13 pmDCA-IDA
9h 13m1 stop
$533Hawaiian Airlines
Find Deal
Tue, Nov 4 - Sat, Nov 8

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

Our best Delta deals on Idaho Falls to Washington, D.C. Reagan-National Airport flight tickets
Delta
Nov 11
IDA6:57 pmIdaho Falls Fanning Field
12h 13m
2 stops
DCA9:10 amWashington, D.C. Reagan-National
Nov 15
DCA5:05 pmWashington, D.C. Reagan-National
7h 28m
1 stop
IDA10:33 pmIdaho Falls Fanning Field
$418
Find similar
Delta
Nov 8
IDA6:53 pmIdaho Falls Fanning Field
12h 17m
2 stops
DCA9:10 amWashington, D.C. Reagan-National
Nov 11
DCA10:20 amWashington, D.C. Reagan-National
13h 59m
2 stops
IDA10:19 pmIdaho Falls Fanning Field
$423
Find similar
Delta
Nov 15
IDA6:00 amIdaho Falls Fanning Field
8h 00m
1 stop
DCA4:00 pmWashington, D.C. Reagan-National
Nov 17
DCA5:05 pmWashington, D.C. Reagan-National
7h 14m
1 stop
IDA10:19 pmIdaho Falls Fanning Field
$467
Find similar

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

Our best Alaska Airlines deals on Idaho Falls to Washington, D.C. Reagan-National Airport flight tickets
Alaska Airlines
Nov 15
IDA6:05 amIdaho Falls Fanning Field
8h 48m
1 stop
DCA4:53 pmWashington, D.C. Reagan-National
Nov 18
DCA8:00 amWashington, D.C. Reagan-National
9h 13m
1 stop
IDA3:13 pmIdaho Falls Fanning Field
$412
Find similar
Alaska Airlines
Nov 8
IDA6:05 amIdaho Falls Fanning Field
8h 48m
1 stop
DCA4:53 pmWashington, D.C. Reagan-National
Nov 13
DCA8:00 amWashington, D.C. Reagan-National
9h 13m
1 stop
IDA3:13 pmIdaho Falls Fanning Field
$413
Find similar
Alaska Airlines
Nov 15
IDA6:05 amIdaho Falls Fanning Field
8h 48m
1 stop
DCA4:53 pmWashington, D.C. Reagan-National
Nov 19
DCA9:59 amWashington, D.C. Reagan-National
16h 00m
2 stops
IDA11:59 pmIdaho Falls Fanning Field
$453
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Idaho Falls to Washington, D.C. Reagan-National Airport 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 16, 2025.
Use the filters below to find and compare flights from Idaho Falls to Washington, D.C. Reagan-National Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Sat 11/15

6:05 am-4:53 pm

1 stop8h 48m

Washington, D.C. Reagan-National

Tue 11/18

8:00 am-3:13 pm

1 stop9h 13m

$412

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Sat 11/8

6:05 am-4:53 pm

1 stop8h 48m

Washington, D.C. Reagan-National

Thu 11/13

8:00 am-3:13 pm

1 stop9h 13m

$413

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Mon 10/27

1:11 pm-10:15 pm

1 stop7h 04m

Washington, D.C. Reagan-National

Sat 11/1

6:59 am-12:24 pm

1 stop7h 25m

$414

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Mon 10/27

1:11 pm-11:12 pm

1 stop8h 01m

Washington, D.C. Reagan-National

Fri 10/31

6:59 am-12:25 pm

1 stop7h 26m

$415

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Tue 11/11

6:57 pm-9:10 am

2 stops12h 13m

Washington, D.C. Reagan-National

Sat 11/15

5:05 pm-10:33 pm

1 stop7h 28m

$418

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Mon 10/27

1:11 pm-10:15 pm

1 stop7h 04m

Washington, D.C. Reagan-National

Sat 11/1

12:54 pm-9:48 pm

2 stops10h 54m

$419

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Mon 10/27

1:11 pm-10:15 pm

1 stop7h 04m

Washington, D.C. Reagan-National

Fri 10/31

12:22 pm-9:33 pm

2 stops11h 11m

$420

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Sat 11/8

6:53 pm-9:10 am

2 stops12h 17m

Washington, D.C. Reagan-National

Tue 11/11

10:20 am-10:19 pm

2 stops13h 59m

$423

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Sat 11/8

7:10 am-10:15 pm

2 stops13h 05m

Washington, D.C. Reagan-National

Mon 11/10

1:44 pm-10:34 pm

2 stops10h 50m

$424

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Tue 11/4

6:05 am-4:53 pm

1 stop8h 48m

Washington, D.C. Reagan-National

Sat 11/8

8:00 am-3:13 pm

1 stop9h 13m

$533

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 Washington, D.C. from

How to get the cheapest flight ticket from Idaho Falls to Washington, D.C. Reagan-National Airport

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 typical price of a round-trip flight between Idaho Falls and Washington, D.C. Reagan-National Airport?

What is the cheapest day to depart on your flight to Washington, D.C. Reagan-National Airport?

The cheapest day to depart from Idaho Falls to Washington, D.C. Reagan-National Airport is on a Monday. Travelers who choose to depart for Washington, D.C. Reagan-National Airport on a Monday will often find tickets for as low as $394. Flights from Idaho Falls to Washington, D.C. Reagan-National Airport on a Friday will generally be more expensive and average around $877. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Washington, D.C. Reagan-National Airport?

Our data shows that the cheapest Idaho Falls to Washington, D.C. Reagan-National Airport flights are usually those with departure times at noon. Our users have found flights to Washington, D.C. Reagan-National Airport at noon for as low as $554. In contrast, the most expensive time of day to depart to Washington, D.C. Reagan-National Airport is in the morning when prices are around $877.

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

You could potentially save up to 18% on your flight if you consider stops on a Idaho Falls to Washington, D.C. Reagan-National Airport flight.

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

Are you open to changing your travel dates? Check out the ideal times to fly from Idaho Falls to Washington, D.C. Reagan-National Airport according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Idaho Falls to Washington, D.C. Reagan-National Airport (IDA to DCA) flight deals and tips

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

Direct flights

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

    A flight from Idaho Falls Fanning Field to Washington, D.C. Reagan-National will travel around 1833.0 mi. By plane, this route typically takes 7h 02m.

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

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

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

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

  • What documentation or ID do you need to fly to Washington, D.C. Reagan-National Airport?

    The required travel and health documents for your Washington, D.C. Reagan-National Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Reagan-National Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

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

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

Compare and see reviews for airlines that fly from Idaho Falls to Washington, D.C. Reagan-National Airport with momondo
Airline
Rating
Free Cancellation
Price
American AirlinesPriceFrom $369Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights
United AirlinesPriceFrom $394Free CancellationRating
7.4
8,924 reviews
Search United Airlines flights

Traveling to a place near Washington, D.C.?

Book flights to Washington, D.C. if you plan to visit one of these locations
Alexandria
Gettysburg
National Harbor
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Manassas
Reston
Fairfax
Glen Burnie
Gaithersburg
Springfield
Linthicum Heights

Why use momondo?

Why should I use momondo to find a flight deal from Idaho Falls to Washington, D.C.?

Finding the right flight to Washington, D.C. from Idaho Falls is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

All flight searches from Idaho Falls to Washington, D.C. on momondo can be filtered to show those which offer flexible booking policies.

How can momondo help me find flights from Idaho Falls to Washington, D.C.?

momondo provides multiple filters to help you find the best flight to Washington, D.C. from Idaho Falls. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from Idaho Falls to Washington, D.C. right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Washington, D.C. from Idaho Falls. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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