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Cheap flights from Idaho Falls to Washington, D.C. from $208

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 11/27. 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

Multiple Airlines Logo
10:57 pm - 4:30 amIDA-BWI
27h 33m1 stop
Multiple Airlines Logo
5:35 am - 4:14 pmBWI-IDA
12h 39m2 stops
$318Multiple Airlines
Find Deal
Fri, Oct 24 - Fri, Oct 31
Alaska Airlines Logo
4:15 pm - 12:23 amIDA-IAD
30h 08m1 stop
Alaska Airlines Logo
7:43 am - 3:13 pmIAD-IDA
9h 30m1 stop
$355Alaska Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
Alaska Airlines Logo
6:00 am - 12:23 amIDA-IAD
16h 23m1 stop
Alaska Airlines Logo
7:43 am - 11:59 pmIAD-IDA
18h 16m1 stop
$379Alaska Airlines
Find Deal
Thu, Oct 23 - Tue, Oct 28
United Airlines Logo
2:35 pm - 11:18 pmIDA-BWI
6h 43m1 stop
United Airlines Logo
10:10 am - 5:46 pmBWI-IDA
9h 36m1 stop
$393United Airlines
Find Deal
Tue, Oct 21 - Tue, Oct 28
United Airlines Logo
2:35 pm - 11:18 pmIDA-BWI
6h 43m1 stop
United Airlines Logo
6:15 am - 3:16 pmBWI-IDA
11h 01m2 stops
$398United Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
American Airlines Logo
12:55 pm - 10:15 pmIDA-DCA
7h 20m1 stop
American Airlines Logo
1:30 pm - 9:48 pmDCA-IDA
10h 18m1 stop
$413American Airlines
Find Deal
Wed, Oct 22 - Wed, Oct 29
American Airlines Logo
1:11 pm - 11:12 pmIDA-DCA
8h 01m1 stop
American Airlines Logo
5:00 am - 12:25 pmDCA-IDA
9h 25m1 stop
$414American Airlines
Find Deal
Thu, Oct 23 - Tue, Oct 28
Delta Logo
6:53 pm - 6:00 amIDA-BWI
9h 07m1 stop
Delta Logo
10:18 am - 10:15 pmBWI-IDA
13h 57m2 stops
$442Delta
Find Deal
Tue, Oct 21 - Tue, Oct 28
Delta Logo
6:45 pm - 6:07 amIDA-BWI
9h 22m1 stop
Delta Logo
12:15 pm - 10:21 pmBWI-IDA
12h 06m2 stops
$455Delta
Find Deal
Tue, Mar 10 - Wed, Mar 11
Hawaiian Airlines Logo
8:00 am - 5:55 pmIDA-IAD
7h 55m1 stop
Hawaiian Airlines Logo
7:00 am - 3:23 pmIAD-IDA
10h 23m1 stop
$475Hawaiian Airlines
Find Deal
Fri, Mar 6 - Tue, Mar 10

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
Oct 21
IDA4:15 pmIdaho Falls Fanning Field
30h 08m
1 stop
IAD12:23 amWashington, D.C. Dulles Intl
Oct 28
IAD7:43 amWashington, D.C. Dulles Intl
9h 30m
1 stop
IDA3:13 pmIdaho Falls Fanning Field
$355
Find similar
Alaska Airlines
Oct 23
IDA6:00 amIdaho Falls Fanning Field
16h 23m
1 stop
IAD12:23 amWashington, D.C. Dulles Intl
Oct 28
IAD7:43 amWashington, D.C. Dulles Intl
18h 16m
1 stop
IDA11:59 pmIdaho Falls Fanning Field
$379
Find similar
Alaska Airlines
Dec 3
IDA5:07 pmIdaho Falls Fanning Field
26h 52m
1 stop
DCA9:59 pmWashington, D.C. Reagan-National
Dec 8
DCA5:00 pmWashington, D.C. Reagan-National
25h 27m
1 stop
IDA4:27 pmIdaho Falls Fanning Field
$382
Find similar

Delta flights from Idaho Falls to Washington, D.C.

Our best Delta deals on Idaho Falls to Washington, D.C. flight tickets
Delta
Oct 21
IDA6:53 pmIdaho Falls Fanning Field
9h 07m
1 stop
BWI6:00 amBaltimore/Washington
Oct 28
BWI10:18 amBaltimore/Washington
13h 57m
2 stops
IDA10:15 pmIdaho Falls Fanning Field
$442
Find similar
Delta
Mar 10
IDA6:45 pmIdaho Falls Fanning Field
9h 22m
1 stop
BWI6:07 amBaltimore/Washington
Mar 11
BWI12:15 pmBaltimore/Washington
12h 06m
2 stops
IDA10:21 pmIdaho Falls Fanning Field
$455
Find similar
Delta
Mar 10
IDA6:45 pmIdaho Falls Fanning Field
9h 22m
1 stop
BWI6:07 amBaltimore/Washington
Mar 11
BWI12:15 pmBaltimore/Washington
12h 06m
2 stops
IDA10:21 pmIdaho Falls Fanning Field
$484
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 September 25, 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 FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Fri 10/24

10:57 pm-4:30 am

1 stop27h 33m

Baltimore/Washington

Fri 10/31

5:35 am-4:14 pm

2 stops12h 39m

$318

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Tue 10/21

4:15 pm-12:23 am

1 stop30h 08m

Washington, D.C. Dulles Intl

Tue 10/28

7:43 am-3:13 pm

1 stop9h 30m

$355

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 10/23

6:00 am-12:23 am

1 stop16h 23m

Washington, D.C. Dulles Intl

Tue 10/28

7:43 am-11:59 pm

1 stop18h 16m

$379

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Tue 10/21

2:35 pm-11:18 pm

1 stop6h 43m

Baltimore/Washington

Tue 10/28

10:10 am-5:46 pm

1 stop9h 36m

$393

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Wed 10/22

2:35 pm-11:18 pm

1 stop6h 43m

Baltimore/Washington

Wed 10/29

6:15 am-3:16 pm

2 stops11h 01m

$398

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Wed 10/22

12:55 pm-10:15 pm

1 stop7h 20m

Washington, D.C. Reagan-National

Wed 10/29

1:30 pm-9:48 pm

1 stop10h 18m

$413

Idaho FallsWashington, D.C.

IDA - DCA

IDADCA

Idaho Falls Fanning Field

Thu 10/23

1:11 pm-11:12 pm

1 stop8h 01m

Washington, D.C. Reagan-National

Tue 10/28

5:00 am-12:25 pm

1 stop9h 25m

$414

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Tue 10/21

6:53 pm-6:00 am

1 stop9h 07m

Baltimore/Washington

Tue 10/28

10:18 am-10:15 pm

2 stops13h 57m

$442

Idaho FallsBaltimore

IDA - BWI

IDABWI

Idaho Falls Fanning Field

Tue 3/10

6:45 pm-6:07 am

1 stop9h 22m

Baltimore/Washington

Wed 3/11

12:15 pm-10:21 pm

2 stops12h 06m

$455

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Fri 3/6

8:00 am-5:55 pm

1 stop7h 55m

Washington, D.C. Dulles Intl

Tue 3/10

7:00 am-3:23 pm

1 stop10h 23m

$475

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 25% 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.

Direct flights

None
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..
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  • 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 06m.

  • 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
DeltaPriceFrom $294Free CancellationRating
7.9
7,973 reviews
Search Delta flights
United AirlinesPriceFrom $394Free CancellationRating
7.4
8,928 reviews
Search United Airlines flights
American AirlinesPriceFrom $437Free CancellationRating
7.2
10,000 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
Gettysburg
National Harbor
Arlington
Woodbridge
Waldorf
Tysons
Laurel
Colonial Beach
Silver Spring
Fredericksburg
Towson
Rockville
Manassas
Fairfax
Reston
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.?

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