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Cheap flights from Idaho Falls to Washington, D.C. from $395

This is the cheapest round-trip 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 9/26. 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

American Airlines Logo
12:54 pm - 11:26 pmIDA-DCA
8h 32m1 stop
American Airlines Logo
6:30 am - 12:24 pmDCA-IDA
7h 54m1 stop
$395American Airlines
Find Deal
Fri, Sep 26 - Fri, Oct 3
American Airlines Logo
1:17 pm - 10:59 pmIDA-DCA
7h 42m1 stop
American Airlines Logo
12:25 pm - 9:25 pmDCA-IDA
11h 00m2 stops
$400American Airlines
Find Deal
Thu, Aug 28 - Thu, Sep 4
Hawaiian Airlines Logo
6:13 am - 4:49 pmIDA-DCA
8h 36m1 stop
Hawaiian Airlines Logo
8:00 am - 3:38 pmDCA-IDA
9h 38m1 stop
$520Hawaiian Airlines
Find Deal
Tue, Sep 30 - Tue, Oct 14
Alaska Airlines Logo
8:00 am - 9:55 pmIDA-DCA
11h 55m1 stop
Alaska Airlines Logo
5:30 pm - 3:23 pmDCA-IDA
23h 53m1 stop
$553Alaska Airlines
Find Deal
Wed, Dec 3 - Mon, Dec 8
Alaska Airlines Logo
6:13 am - 4:06 pmIDA-DCA
31h 53m2 stops
Alaska Airlines Logo
9:59 am - 3:38 pmDCA-IDA
31h 39m2 stops
$554Alaska Airlines
Find Deal
Fri, Sep 26 - Fri, Oct 3
United Airlines Logo
5:00 am - 3:05 pmIDA-DCA
8h 05m1 stop
United Airlines Logo
4:17 pm - 10:51 pmDCA-IDA
8h 34m1 stop
$576United Airlines
Find Deal
Thu, Aug 14 - Mon, Aug 18
Delta Logo
11:20 am - 11:46 pmIDA-DCA
10h 26m2 stops
Delta Logo
7:45 am - 6:11 pmDCA-IDA
12h 26m2 stops
$725Delta
Find Deal
Fri, Aug 15 - Tue, Aug 19
Delta Logo
6:51 pm - 9:09 amIDA-DCA
12h 18m2 stops
Delta Logo
11:10 am - 10:25 pmDCA-IDA
13h 15m2 stops
$784Delta
Find Deal
Thu, Sep 18 - Sun, Sep 21
Hawaiian Airlines Logo
6:13 am - 4:49 pmIDA-DCA
8h 36m1 stop
Hawaiian Airlines Logo
8:00 am - 3:20 pmDCA-IDA
9h 20m1 stop
$923Hawaiian Airlines
Find Deal
Thu, Sep 18 - Sun, Sep 21
United Airlines Logo
7:00 am - 3:05 pmIDA-DCA
6h 05m1 stop
United Airlines Logo
4:17 pm - 10:51 pmDCA-IDA
8h 34m1 stop
$971United Airlines
Find Deal
Mon, Aug 11 - Fri, Aug 15

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
Aug 6
IDA6:00 amIdaho Falls Fanning Field
8h 46m
1 stop
DCA4:46 pmWashington, D.C. Reagan-National
Aug 16
DCA3:40 pmWashington, D.C. Reagan-National
8h 47m
2 stops
IDA10:27 pmIdaho Falls Fanning Field
$595
Find similar
Delta
Aug 6
IDA6:00 amIdaho Falls Fanning Field
9h 59m
2 stops
DCA5:59 pmWashington, D.C. Reagan-National
Aug 16
DCA3:40 pmWashington, D.C. Reagan-National
8h 47m
2 stops
IDA10:27 pmIdaho Falls Fanning Field
$600
Find similar
Delta
Aug 15
IDA11:20 amIdaho Falls Fanning Field
10h 26m
2 stops
DCA11:46 pmWashington, D.C. Reagan-National
Aug 19
DCA7:45 amWashington, D.C. Reagan-National
12h 26m
2 stops
IDA6:11 pmIdaho Falls Fanning Field
$725
Find similar

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

Our best American Airlines deals on Idaho Falls to Washington, D.C. Reagan-National Airport flight tickets
American Airlines
Sep 26
IDA12:54 pmIdaho Falls Fanning Field
8h 32m
1 stop
DCA11:26 pmWashington, D.C. Reagan-National
Oct 3
DCA6:30 amWashington, D.C. Reagan-National
7h 54m
1 stop
IDA12:24 pmIdaho Falls Fanning Field
$395
Find similar
American Airlines
Aug 28
IDA1:17 pmIdaho Falls Fanning Field
7h 42m
1 stop
DCA10:59 pmWashington, D.C. Reagan-National
Sep 4
DCA12:25 pmWashington, D.C. Reagan-National
11h 00m
2 stops
IDA9:25 pmIdaho Falls Fanning Field
$400
Find similar
American Airlines
Sep 27
IDA12:54 pmIdaho Falls Fanning Field
7h 06m
1 stop
DCA10:00 pmWashington, D.C. Reagan-National
Oct 14
DCA6:59 amWashington, D.C. Reagan-National
7h 25m
1 stop
IDA12:24 pmIdaho Falls Fanning Field
$427
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 July 31, 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

Fri 9/26

12:54 pm-11:26 pm

1 stop8h 32m

Washington, D.C. Reagan-National

Fri 10/3

6:30 am-12:24 pm

1 stop7h 54m

$395

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Thu 8/28

1:17 pm-10:59 pm

1 stop7h 42m

Washington, D.C. Reagan-National

Thu 9/4

12:25 pm-9:25 pm

2 stops11h 00m

$400

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Tue 9/30

6:13 am-4:49 pm

1 stop8h 36m

Washington, D.C. Reagan-National

Tue 10/14

8:00 am-3:38 pm

1 stop9h 38m

$520

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Wed 12/3

8:00 am-9:55 pm

1 stop11h 55m

Washington, D.C. Reagan-National

Mon 12/8

5:30 pm-3:23 pm

1 stop23h 53m

$553

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 9/26

6:13 am-4:06 pm

2 stops31h 53m

Washington, D.C. Reagan-National

Fri 10/3

9:59 am-3:38 pm

2 stops31h 39m

$554

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Thu 8/14

5:00 am-3:05 pm

1 stop8h 05m

Washington, D.C. Reagan-National

Mon 8/18

4:17 pm-10:51 pm

1 stop8h 34m

$576

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 8/15

11:20 am-11:46 pm

2 stops10h 26m

Washington, D.C. Reagan-National

Tue 8/19

7:45 am-6:11 pm

2 stops12h 26m

$725

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Thu 9/18

6:51 pm-9:09 am

2 stops12h 18m

Washington, D.C. Reagan-National

Sun 9/21

11:10 am-10:25 pm

2 stops13h 15m

$784

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Thu 9/18

6:13 am-4:49 pm

1 stop8h 36m

Washington, D.C. Reagan-National

Sun 9/21

8:00 am-3:20 pm

1 stop9h 20m

$923

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Mon 8/11

7:00 am-3:05 pm

1 stop6h 05m

Washington, D.C. Reagan-National

Fri 8/15

4:17 pm-10:51 pm

1 stop8h 34m

$971

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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 cheapest month to fly to Washington, D.C. Reagan-National Airport?

The month of December is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Idaho Falls, with most prices found around $394. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of December, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $488.

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 37% 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

Best Price Found

$395

Fastest flight time

6h 05m

Direct flights

None
The best flight deal from Idaho Falls to Washington, D.C. Reagan-National Airport found on momondo in the last 72 hours is $395
The fastest flight from Idaho Falls to Washington, D.C. Reagan-National Airport takes 6h 05m
There are no direct flights from Idaho Falls to Washington, D.C. Reagan-National Airport. Popular non-direct route for this connection is Idaho Falls Fanning Field Airport - Washington, D.C. Reagan-National Airport.
Search flight deals

  • 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 6h 05m.

  • 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
8,900 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
Arlington
National Harbor
Woodbridge
Laurel
Tysons
Silver Spring
Waldorf
Fredericksburg
Manassas
Towson
Rockville
Colonial Beach
Gaithersburg
Fairfax
Reston
Glen Burnie
Linthicum Heights
Springfield

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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