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Cheap flights from Idaho Falls to Washington, D.C. 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 Idaho Falls to Washington, D.C. departing on 9/9. 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

Enter your travel dates to find the best prices.
American Airlines Logo
12:53 pm - 11:59 pm
IDA
-
DCA
9h 06m
1 stop
American Airlines Logo
7:35 am - 1:23 pm
DCA
-
IDA
7h 48m
1 stop
$435American Airlines
Tue, Jul 21 - Tue, Jul 28
American Airlines Logo
12:15 pm - 11:59 pm
IDA
-
DCA
9h 44m
1 stop
American Airlines Logo
6:30 am - 1:28 pm
DCA
-
IDA
8h 58m
1 stop
$440American Airlines
Thu, Sep 24 - Mon, Sep 28
American Airlines Logo
12:53 pm - 11:59 pm
IDA
-
DCA
9h 06m
1 stop
American Airlines Logo
7:35 am - 1:23 pm
DCA
-
IDA
7h 48m
1 stop
$469American Airlines
Tue, Jul 21 - Tue, Jul 28
Delta Logo
7:00 pm - 10:09 am
IDA
-
DCA
13h 09m
2 stops
Delta Logo
6:02 am - 6:20 pm
DCA
-
IDA
14h 18m
2 stops
$470Delta
Fri, Aug 21 - Mon, Aug 24
Delta Logo
7:00 pm - 10:09 am
IDA
-
DCA
13h 09m
2 stops
Delta Logo
6:02 am - 6:20 pm
DCA
-
IDA
14h 18m
2 stops
$494Delta
Fri, Aug 21 - Mon, Aug 24
American Airlines Logo
2:20 pm - 11:58 pm
IDA
-
DCA
7h 38m
1 stop
American Airlines Logo
2:59 pm - 9:20 pm
DCA
-
IDA
8h 21m
1 stop
$505American Airlines
Tue, Aug 11 - Sat, Aug 15
American Airlines Logo
2:20 pm - 11:58 pm
IDA
-
DCA
7h 38m
1 stop
American Airlines Logo
11:56 am - 9:20 pm
DCA
-
IDA
11h 24m
2 stops
$510American Airlines
Tue, Aug 11 - Sat, Aug 15
Delta Logo
7:00 pm - 10:09 am
IDA
-
DCA
13h 09m
2 stops
Delta Logo
6:02 am - 6:20 pm
DCA
-
IDA
14h 18m
2 stops
$519Delta
Fri, Aug 21 - Mon, Aug 24
American Airlines Logo
2:20 pm - 11:58 pm
IDA
-
DCA
7h 38m
1 stop
American Airlines Logo
3:12 pm - 9:20 pm
DCA
-
IDA
8h 08m
1 stop
$523American Airlines
Wed, Aug 5 - Sat, Aug 8
American Airlines Logo
2:20 pm - 11:58 pm
IDA
-
DCA
7h 38m
1 stop
American Airlines Logo
2:59 pm - 9:20 pm
DCA
-
IDA
8h 21m
1 stop
$539American Airlines
Tue, Aug 11 - Sat, Aug 15

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
Sep 24
IDA3:57 pmIdaho Falls Fanning Field
22h 03m
1 stop
DCA4:00 pmWashington, D.C. Reagan-National
Sep 28
DCA6:59 pmWashington, D.C. Reagan-National
29h 57m
2 stops
IDA10:56 pmIdaho Falls Fanning Field
$573
Alaska Airlines
Sep 24
IDA6:18 amIdaho Falls Fanning Field
12h 42m
2 stops
DCA9:00 pmWashington, D.C. Reagan-National
Sep 28
DCA6:59 pmWashington, D.C. Reagan-National
29h 57m
2 stops
IDA10:56 pmIdaho Falls Fanning Field
$611
Alaska Airlines
Aug 21
IDA6:18 amIdaho Falls Fanning Field
12h 42m
2 stops
DCA9:00 pmWashington, D.C. Reagan-National
Aug 24
DCA5:00 pmWashington, D.C. Reagan-National
24h 20m
1 stop
IDA3:20 pmIdaho Falls Fanning Field
$613

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
Jul 21
IDA12:53 pmIdaho Falls Fanning Field
9h 06m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
Jul 28
DCA7:35 amWashington, D.C. Reagan-National
7h 48m
1 stop
IDA1:23 pmIdaho Falls Fanning Field
$435
American Airlines
Sep 24
IDA12:15 pmIdaho Falls Fanning Field
9h 44m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
Sep 28
DCA6:30 amWashington, D.C. Reagan-National
8h 58m
1 stop
IDA1:28 pmIdaho Falls Fanning Field
$440
American Airlines
Jul 21
IDA12:53 pmIdaho Falls Fanning Field
9h 06m
1 stop
DCA11:59 pmWashington, D.C. Reagan-National
Jul 28
DCA7:35 amWashington, D.C. Reagan-National
7h 48m
1 stop
IDA1:23 pmIdaho Falls Fanning Field
$469

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 May 26, 2026.
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

Cheapest round-trip

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Tue 7/21

12:53 pm-11:59 pm

1 stop9h 06m

Washington, D.C. Reagan-National

Tue 7/28

7:35 am-1:23 pm

1 stop7h 48m

$435

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Thu 9/24

12:15 pm-11:59 pm

1 stop9h 44m

Washington, D.C. Reagan-National

Mon 9/28

6:30 am-1:28 pm

1 stop8h 58m

$440

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Tue 7/21

12:53 pm-11:59 pm

1 stop9h 06m

Washington, D.C. Reagan-National

Tue 7/28

7:35 am-1:23 pm

1 stop7h 48m

$469

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 8/21

7:00 pm-10:09 am

2 stops13h 09m

Washington, D.C. Reagan-National

Mon 8/24

6:02 am-6:20 pm

2 stops14h 18m

$470

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 8/21

7:00 pm-10:09 am

2 stops13h 09m

Washington, D.C. Reagan-National

Mon 8/24

6:02 am-6:20 pm

2 stops14h 18m

$494

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Tue 8/11

2:20 pm-11:58 pm

1 stop7h 38m

Washington, D.C. Reagan-National

Sat 8/15

2:59 pm-9:20 pm

1 stop8h 21m

$505

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Tue 8/11

2:20 pm-11:58 pm

1 stop7h 38m

Washington, D.C. Reagan-National

Sat 8/15

11:56 am-9:20 pm

2 stops11h 24m

$510

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Fri 8/21

7:00 pm-10:09 am

2 stops13h 09m

Washington, D.C. Reagan-National

Mon 8/24

6:02 am-6:20 pm

2 stops14h 18m

$519
Quickest round-trip

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Wed 8/5

2:20 pm-11:58 pm

1 stop7h 38m

Washington, D.C. Reagan-National

Sat 8/8

3:12 pm-9:20 pm

1 stop8h 08m

$523

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Tue 8/11

2:20 pm-11:58 pm

1 stop7h 38m

Washington, D.C. Reagan-National

Sat 8/15

2:59 pm-9:20 pm

1 stop8h 21m

$539

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

The month of November is, on average, the cheapest month to fly to Washington, D.C. Reagan-National Airport from Idaho Falls, with most prices found around $0. If you aren’t able to travel to Washington, D.C. Reagan-National Airport during the month of November, then flying in January is also cheap. Prices for this month can be found on momondo for an average of $0.

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

You could potentially save up to 22% 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

Fastest flight time

10h 14m

Direct flights

None
The fastest flight from Idaho Falls to Washington, D.C. Reagan-National Airport takes 10h 14m
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.
Search flight deals

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

  • 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 10h 14m.

  • 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 $641Free CancellationRating
7.1
11,630 reviews
Search American 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
National Harbor
Gettysburg
Arlington
Waldorf
Woodbridge
Laurel
Gaithersburg
Colonial Beach
Fredericksburg
Silver Spring
Rockville
Towson
Manassas
Linthicum Heights
Tysons
Springfield
Bethesda
Fairfax
College Park

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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