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Cheap flights from Idaho Falls to Washington, D.C. from $152

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 8/24. 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
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.
Alaska Airlines Logo
6:04 am - 4:14 pm
IDA
-
IAD
8h 10m
1 stop
Alaska Airlines Logo
7:46 am - 3:17 pm
IAD
-
IDA
9h 31m
1 stop
$349Alaska Airlines
ke, marras 4 - la, marras 7
Delta Logo
7:00 pm - 6:20 am
IDA
-
BWI
9h 20m
1 stop
Delta Logo
8:18 am - 6:20 pm
BWI
-
IDA
12h 02m
2 stops
$407Delta
pe, elo 21 - ma, elo 24
United Airlines Logo
4:14 pm - 12:45 am
IDA
-
IAD
6h 31m
1 stop
United Airlines Logo
6:30 am - 1:25 pm
IAD
-
IDA
8h 55m
1 stop
$410United Airlines
pe, heinä 3 - ti, heinä 7
United Airlines Logo
4:14 pm - 12:45 am
IDA
-
IAD
6h 31m
1 stop
United Airlines Logo
6:30 am - 1:25 pm
IAD
-
IDA
8h 55m
1 stop
$449United Airlines
pe, heinä 3 - la, heinä 4
Alaska Airlines Logo
4:14 pm - 3:16 pm
IDA
-
BWI
21h 02m
1 stop
Alaska Airlines Logo
4:19 pm - 1:06 pm
BWI
-
IDA
22h 47m
1 stop
$449Alaska Airlines
ti, elo 11 - la, elo 15
United Airlines Logo
5:00 am - 5:13 pm
IDA
-
BWI
10h 13m
2 stops
United Airlines Logo
4:10 pm - 9:08 pm
BWI
-
IDA
6h 58m
1 stop
$454United Airlines
ke, marras 4 - la, marras 7
Alaska Airlines Logo
3:54 pm - 5:51 am
IDA
-
IAD
11h 57m
2 stops
Alaska Airlines Logo
7:46 am - 3:17 pm
IAD
-
IDA
9h 31m
1 stop
$456Alaska Airlines
ke, marras 4 - la, marras 7
United Airlines Logo
5:00 am - 5:13 pm
IDA
-
BWI
10h 13m
2 stops
United Airlines Logo
8:15 am - 5:22 pm
BWI
-
IDA
11h 07m
2 stops
$459United Airlines
ke, marras 4 - la, marras 7
American Airlines Logo
2:20 pm - 11:58 pm
IDA
-
DCA
7h 38m
1 stop
American Airlines Logo
10:16 pm - 1:09 pm
DCA
-
IDA
16h 53m
1 stop
$537American Airlines
pe, elo 21 - ma, elo 24
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
$538American Airlines
ti, elo 11 - la, elo 15

Alaska Airlines flights from Idaho Falls to Washington, D.C.

Our best Alaska Airlines deals on Idaho Falls to Washington, D.C. flight tickets
Alaska Airlines
Nov 4
IDA6:04 amIdaho Falls Fanning Field
8h 10m
1 stop
IAD4:14 pmWashington, D.C. Dulles Intl
Nov 7
IAD7:46 amWashington, D.C. Dulles Intl
9h 31m
1 stop
IDA3:17 pmIdaho Falls Fanning Field
$349
Alaska Airlines
Aug 11
IDA4:14 pmIdaho Falls Fanning Field
21h 02m
1 stop
BWI3:16 pmBaltimore/Washington
Aug 15
BWI4:19 pmBaltimore/Washington
22h 47m
1 stop
IDA1:06 pmIdaho Falls Fanning Field
$449
Alaska Airlines
Nov 4
IDA3:54 pmIdaho Falls Fanning Field
11h 57m
2 stops
IAD5:51 amWashington, D.C. Dulles Intl
Nov 7
IAD7:46 amWashington, D.C. Dulles Intl
9h 31m
1 stop
IDA3:17 pmIdaho Falls Fanning Field
$456

American Airlines flights from Idaho Falls to Washington, D.C.

Our best American Airlines deals on Idaho Falls to Washington, D.C. flight tickets
American Airlines
Aug 21
IDA2:20 pmIdaho Falls Fanning Field
7h 38m
1 stop
DCA11:58 pmWashington, D.C. Reagan-National
Aug 24
DCA10:16 pmWashington, D.C. Reagan-National
16h 53m
1 stop
IDA1:09 pmIdaho Falls Fanning Field
$537
American Airlines
Aug 11
IDA2:20 pmIdaho Falls Fanning Field
7h 38m
1 stop
DCA11:58 pmWashington, D.C. Reagan-National
Aug 15
DCA11:56 amWashington, D.C. Reagan-National
11h 24m
2 stops
IDA9:20 pmIdaho Falls Fanning Field
$538
American Airlines
Jun 6
IDA7:00 amIdaho Falls Fanning Field
9h 34m
1 stop
IAD6:34 pmWashington, D.C. Dulles Intl
Jun 11
IAD6:19 amWashington, D.C. Dulles Intl
7h 28m
1 stop
IDA11:47 amIdaho Falls Fanning Field
$540

momondo Fare Finder

 
Customize your flight search to find flights from Idaho Falls to Washington, D.C. 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 kesäkuu 1, 2026.
Use the filters below to find and compare flights from Idaho Falls to Washington, D.C. that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

ke 11/4

6:04 am-4:14 pm

1 stop8h 10m

Washington, D.C. Dulles Intl

la 11/7

7:46 am-3:17 pm

1 stop9h 31m

$349

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

pe 8/21

7:00 pm-6:20 am

1 stop9h 20m

Baltimore/Washington

ma 8/24

8:18 am-6:20 pm

2 stops12h 02m

$407
Quickest round-trip

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

pe 7/3

4:14 pm-12:45 am

1 stop6h 31m

Washington, D.C. Dulles Intl

ti 7/7

6:30 am-1:25 pm

1 stop8h 55m

$410

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

pe 7/3

4:14 pm-12:45 am

1 stop6h 31m

Washington, D.C. Dulles Intl

la 7/4

6:30 am-1:25 pm

1 stop8h 55m

$449

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

ti 8/11

4:14 pm-3:16 pm

1 stop21h 02m

Baltimore/Washington

la 8/15

4:19 pm-1:06 pm

1 stop22h 47m

$449

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

ke 11/4

5:00 am-5:13 pm

2 stops10h 13m

Baltimore/Washington

la 11/7

4:10 pm-9:08 pm

1 stop6h 58m

$454

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

ke 11/4

3:54 pm-5:51 am

2 stops11h 57m

Washington, D.C. Dulles Intl

la 11/7

7:46 am-3:17 pm

1 stop9h 31m

$456

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

ke 11/4

5:00 am-5:13 pm

2 stops10h 13m

Baltimore/Washington

la 11/7

8:15 am-5:22 pm

2 stops11h 07m

$459

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

pe 8/21

2:20 pm-11:58 pm

1 stop7h 38m

Washington, D.C. Reagan-National

ma 8/24

10:16 pm-1:09 pm

1 stop16h 53m

$537

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

ti 8/11

2:20 pm-11:58 pm

1 stop7h 38m

Washington, D.C. Reagan-National

la 8/15

11:56 am-9:20 pm

2 stops11h 24m

$538

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.

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.?

What is the cheapest month to fly to Washington, D.C.?

The month of January is, on average, the cheapest month to fly to Washington, D.C. from Idaho Falls, with most prices found around $0. If you’re not able to fly to Washington, D.C. in January, then December is your next best option. Flight prices from Idaho Falls to Washington, D.C. during December average around $194.

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

You could potentially save up to 43% on your flight if you consider stops on a Idaho Falls to Washington, D.C. flight.

When to book flights from Idaho Falls to Washington, D.C.

Are you open to changing your travel dates? Check out the ideal times to fly from Idaho Falls to Washington, D.C. 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. (IDA to WAS) flight deals and tips

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

Fastest flight time

6h 25m

Direct flights

None
The fastest flight from Idaho Falls to Washington, D.C. takes 6h 25m
There are no direct flights from Idaho Falls to Washington, D.C.. There are no popular flight routes from Idaho Falls to Washington, D.C..
Search flight deals

Frequently asked questions about flying from Idaho Falls to Washington, D.C.

  • How far is Idaho Falls Fanning Field to Washington, D.C. by plane?

    There are 1831.8 mi between Idaho Falls Fanning Field and Washington, D.C.. A reasonable flight in good conditions will take 6h 25m.

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

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

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

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

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, 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..

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

    The travel and health documents you'll need for your trip to Washington, D.C. may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Washington, D.C.. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

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

Best airlines flying from Idaho Falls to Washington, D.C.

Compare and see reviews for airlines that fly from Idaho Falls to Washington, D.C. with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $446Free CancellationRating
7.4
9,768 reviews
Search United Airlines flights
American AirlinesPriceFrom $620Free CancellationRating
7.1
11,642 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.?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Idaho Falls to Washington, D.C. for you.

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

momondo does allow users to show only those flights to Washington, D.C. from Idaho Falls which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential Idaho Falls to Washington, D.C. flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Of course. momondo tracks the price of Idaho Falls to Washington, D.C. 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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Find better results for your trip to the United States

Fly into one of these airports located in Washington, D.C.

Airports listed have a maximum distance of 22.4 mi from Washington, D.C.
Washington, D.C. Reagan-National Airport
Washington, D.C. Dulles Intl Airport