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Cheap flights from Idaho Falls to Washington, D.C. from $194

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 1/14. 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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Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
10:45 am - 9:25 pmIDA-IAD
8h 40m1 stop
United Airlines Logo
2:24 pm - 9:16 pmIAD-IDA
8h 52m1 stop
$415United Airlines
Find Deal
Wed, Dec 24 - Sat, Jan 10
American Airlines Logo
2:07 pm - 11:10 pmIDA-BWI
7h 03m1 stop
American Airlines Logo
6:07 am - 1:37 pmBWI-IDA
9h 30m1 stop
$421American Airlines
Find Deal
Wed, Jan 7 - Thu, Jan 15
American Airlines Logo
2:07 pm - 11:10 pmIDA-BWI
7h 03m1 stop
American Airlines Logo
9:17 am - 10:36 pmBWI-IDA
15h 19m2 stops
$426American Airlines
Find Deal
Wed, Jan 7 - Thu, Jan 15
American Airlines Logo
7:20 am - 11:12 pmIDA-IAD
13h 52m2 stops
American Airlines Logo
6:00 am - 1:37 pmIAD-IDA
9h 37m1 stop
$452American Airlines
Find Deal
Wed, Jan 7 - Thu, Jan 15
American Airlines Logo
2:07 pm - 11:10 pmIDA-BWI
7h 03m1 stop
American Airlines Logo
9:17 am - 10:36 pmBWI-IDA
15h 19m2 stops
$455American Airlines
Find Deal
Wed, Jan 7 - Thu, Jan 15
Alaska Airlines Logo
6:58 pm - 4:26 pmIDA-IAD
19h 28m1 stop
Alaska Airlines Logo
6:04 pm - 10:59 pmIAD-IDA
30h 55m1 stop
$462Alaska Airlines
Find Deal
Wed, Jan 7 - Thu, Jan 15
Alaska Airlines Logo
6:58 pm - 4:09 pmIDA-DCA
19h 11m1 stop
Alaska Airlines Logo
8:00 am - 6:18 pmDCA-IDA
12h 18m1 stop
$464Alaska Airlines
Find Deal
Mon, Jan 26 - Thu, Jan 29
Delta Logo
5:25 am - 11:10 pmIDA-IAD
15h 45m2 stops
Delta Logo
7:30 am - 5:51 pmIAD-IDA
12h 21m2 stops
$496Delta
Find Deal
Sun, Jan 25 - Wed, Jan 28
Delta Logo
5:25 am - 11:10 pmIDA-IAD
15h 45m2 stops
Delta Logo
7:30 am - 5:51 pmIAD-IDA
12h 21m2 stops
$502Delta
Find Deal
Sun, Jan 25 - Wed, Jan 28
United Airlines Logo
2:40 pm - 11:15 pmIDA-BWI
6h 35m1 stop
United Airlines Logo
8:23 am - 1:30 pmBWI-IDA
7h 07m1 stop
$514United Airlines
Find Deal
Sun, Jan 18 - Thu, Jan 22

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

Our best United Airlines deals on Idaho Falls to Washington, D.C. flight tickets
United Airlines
Dec 24
IDA10:45 amIdaho Falls Fanning Field
8h 40m
1 stop
IAD9:25 pmWashington, D.C. Dulles Intl
Jan 10
IAD2:24 pmWashington, D.C. Dulles Intl
8h 52m
1 stop
IDA9:16 pmIdaho Falls Fanning Field
$415
Find similar
United Airlines
Jan 18
IDA2:40 pmIdaho Falls Fanning Field
6h 35m
1 stop
BWI11:15 pmBaltimore/Washington
Jan 22
BWI8:23 amBaltimore/Washington
7h 07m
1 stop
IDA1:30 pmIdaho Falls Fanning Field
$514
Find similar
United Airlines
Dec 9
IDA2:45 pmIdaho Falls Fanning Field
6h 30m
1 stop
IAD11:15 pmWashington, D.C. Dulles Intl
Dec 13
IAD2:30 pmWashington, D.C. Dulles Intl
8h 42m
1 stop
IDA9:12 pmIdaho Falls Fanning Field
$516
Find similar

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
Jan 7
IDA6:58 pmIdaho Falls Fanning Field
19h 28m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
Jan 15
IAD6:04 pmWashington, D.C. Dulles Intl
30h 55m
1 stop
IDA10:59 pmIdaho Falls Fanning Field
$462
Find similar
Alaska Airlines
Jan 26
IDA6:58 pmIdaho Falls Fanning Field
19h 11m
1 stop
DCA4:09 pmWashington, D.C. Reagan-National
Jan 29
DCA8:00 amWashington, D.C. Reagan-National
12h 18m
1 stop
IDA6:18 pmIdaho Falls Fanning Field
$464
Find similar
Alaska Airlines
Jan 7
IDA6:58 pmIdaho Falls Fanning Field
19h 28m
1 stop
IAD4:26 pmWashington, D.C. Dulles Intl
Jan 15
IAD5:26 pmWashington, D.C. Dulles Intl
31h 33m
2 stops
IDA10:59 pmIdaho Falls Fanning Field
$478
Find similar

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 November 26, 2025.
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

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 12/24

10:45 am-9:25 pm

1 stop8h 40m

Washington, D.C. Dulles Intl

Sat 1/10

2:24 pm-9:16 pm

1 stop8h 52m

$415

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Wed 1/7

2:07 pm-11:10 pm

1 stop7h 03m

Baltimore/Washington

Thu 1/15

6:07 am-1:37 pm

1 stop9h 30m

$421

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Wed 1/7

2:07 pm-11:10 pm

1 stop7h 03m

Baltimore/Washington

Thu 1/15

9:17 am-10:36 pm

2 stops15h 19m

$426

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 1/7

7:20 am-11:12 pm

2 stops13h 52m

Washington, D.C. Dulles Intl

Thu 1/15

6:00 am-1:37 pm

1 stop9h 37m

$452

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Wed 1/7

2:07 pm-11:10 pm

1 stop7h 03m

Baltimore/Washington

Thu 1/15

9:17 am-10:36 pm

2 stops15h 19m

$455

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 1/7

6:58 pm-4:26 pm

1 stop19h 28m

Washington, D.C. Dulles Intl

Thu 1/15

6:04 pm-10:59 pm

1 stop30h 55m

$462

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Mon 1/26

6:58 pm-4:09 pm

1 stop19h 11m

Washington, D.C. Reagan-National

Thu 1/29

8:00 am-6:18 pm

1 stop12h 18m

$464

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sun 1/25

5:25 am-11:10 pm

2 stops15h 45m

Washington, D.C. Dulles Intl

Wed 1/28

7:30 am-5:51 pm

2 stops12h 21m

$496

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sun 1/25

5:25 am-11:10 pm

2 stops15h 45m

Washington, D.C. Dulles Intl

Wed 1/28

7:30 am-5:51 pm

2 stops12h 21m

$502

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Sun 1/18

2:40 pm-11:15 pm

1 stop6h 35m

Baltimore/Washington

Thu 1/22

8:23 am-1:30 pm

1 stop7h 07m

$514

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 cheapest day to depart on your flight to Washington, D.C.?

On average, the least expensive day to fly to Washington, D.C. from Idaho Falls is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $608. However, this price may fluctuate depending on the airline, the season, and holidays. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from Idaho Falls to Washington, D.C. for around $853.

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

At noon is the cheapest time of day to fly from Idaho Falls to Washington, D.C. when you can find flight prices for as low as $671. Flying to Washington, D.C. at noon is an ideal time because this is during off-peak travel hours. Try not to purchase tickets in the evening because they tend to be around $737. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You could potentially save up to 53% 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 01m

Direct flights

None
The fastest flight from Idaho Falls to Washington, D.C. takes 6h 01m
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

  • 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 10m.

  • 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
American AirlinesPriceFrom $437Free CancellationRating
7.2
11,038 reviews
Search American Airlines flights
United AirlinesPriceFrom $446Free CancellationRating
7.4
9,050 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
National Harbor
Gettysburg
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Reston
Manassas
Gaithersburg
Fairfax
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.?

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.

An easier way to manage your Washington, D.C. trip

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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