What airlines fly to Washington, D.C.?

United Airlines, Delta and Southwest are the top three most popular airlines that fly to Washington, D.C. from Idaho according to our data. United Airlines is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Washington, D.C.. Keep in mind that there are 5 different airlines that fly to Washington, D.C. on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Idaho to Washington, D.C.?

Frontier, United Airlines, and American Airlines are the most popular carriers operating from Idaho to Washington, D.C.

How long does it take to fly to Washington, D.C.?

Flight times from Idaho to Washington, D.C. vary, but if you’re flying out of Twin Falls and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 6h 02m on average. Another popular route from Idaho to Washington, D.C. is flying from Boise to Washington, D.C. Dulles Intl Airport, which will take roughly 6h 25m. Keep in mind that layovers or delays could extend your travel time.

How many flights depart from Idaho to Washington, D.C. on average per week?

The number of flights available between Idaho and Washington, D.C. is 3 per week as of February 2026. The most frequent departure day is Mon, with 33% of weekly flights leaving on this day.

When did momondo last update prices for flights from Idaho to Washington, D.C.?

Prices for flights from Idaho to Washington, D.C. were last updated today.

How many operators does momondo search for flights from Idaho to Washington, D.C.?

As of February 2026, there are 5 operators available to choose from for flights from Idaho to Washington, D.C..

How old do you have to be to fly from Idaho 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 to Washington, D.C..

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

The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

$100 Cheap Flights from Idaho to Washington, D.C. in 2026

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Find the cheapest flights from Idaho to Washington, D.C.

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One-way

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12:22 pm - 1:00 pm

GEG

DCA

21h 38m

1 stop

8:00 am - 11:27 am

DCA

GEG

30h 27m

1 stop

$175Frontier

Thu, Feb 26 - Wed, Mar 4

1:45 pm - 11:49 pm

BOI

IAD

8h 04m

1 stop

7:00 am - 2:05 pm

IAD

BOI

9h 05m

1 stop

$251Delta

Wed, Apr 1 - Tue, Apr 7

1:43 pm - 11:34 pm

GEG

IAD

6h 51m

1 stop

2:36 pm - 9:35 pm

IAD

GEG

9h 59m

1 stop

$251United Airlines

Sat, Apr 18 - Sat, Apr 25

5:00 am - 2:59 pm

BOI

DCA

7h 59m

1 stop

7:30 am - 3:24 pm

DCA

BOI

9h 54m

1 stop

$251United Airlines

Sat, Apr 25 - Tue, Apr 28

7:00 am - 4:59 pm

GEG

DCA

6h 59m

1 stop

1:00 pm - 5:51 pm

DCA

GEG

7h 51m

1 stop

$251United Airlines

Wed, Mar 4 - Wed, Mar 18

11:32 am - 9:59 pm

GEG

DCA

7h 27m

1 stop

8:59 am - 10:20 pm

DCA

GEG

16h 21m

1 stop

$252Multiple Airlines

Thu, Apr 30 - Tue, May 5

7:43 am - 5:41 pm

BOI

IAD

7h 58m

1 stop

7:10 am - 3:33 pm

IAD

BOI

10h 23m

1 stop

$257Alaska Airlines

Sat, Apr 25 - Tue, Apr 28

1:29 pm - 11:57 pm

BOI

DCA

8h 28m

1 stop

5:55 am - 12:49 pm

DCA

BOI

8h 54m

1 stop

$261American Airlines

Sat, Apr 25 - Wed, Apr 29

7:48 am - 11:26 pm

IDA

IAD

13h 38m

2 stops

7:00 am - 1:13 pm

IAD

IDA

8h 13m

1 stop

$282American Airlines

Sat, May 2 - Tue, May 12

8:48 pm - 7:34 am

BOI

IAD

8h 46m

1 stop

6:00 am - 12:47 pm

IAD

BOI

8h 47m

1 stop

$284Alaska Airlines

Wed, May 20 - Wed, May 27

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

Our best American Airlines deals on Idaho to Washington, D.C. flight tickets

American Airlines

Apr 25

BOI1:29 pmBoise Air Term. Gowen Fld

8h 28m

1 stop

DCA11:57 pmWashington, D.C. Reagan-National

Apr 29

DCA5:55 amWashington, D.C. Reagan-National

8h 54m

1 stop

BOI12:49 pmBoise Air Term. Gowen Fld

$261

American Airlines

May 2

IDA7:48 amIdaho Falls Fanning Field

13h 38m

2 stops

IAD11:26 pmWashington, D.C. Dulles Intl

May 12

IAD7:00 amWashington, D.C. Dulles Intl

8h 13m

1 stop

IDA1:13 pmIdaho Falls Fanning Field

$282

American Airlines

Mar 25

GEG12:25 pmSpokane

8h 08m

1 stop

BWI11:33 pmBaltimore/Washington

Mar 31

BWI5:00 amBaltimore/Washington

9h 44m

1 stop

GEG11:44 amSpokane

$286

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

Our best Alaska Airlines deals on Idaho to Washington, D.C. flight tickets

Alaska Airlines

Apr 21

GEG7:19 amSpokane

10h 41m

1 stop

DCA9:00 pmWashington, D.C. Reagan-National

May 2

DCA8:59 amWashington, D.C. Reagan-National

16h 21m

1 stop

GEG10:20 pmSpokane

$251

Alaska Airlines

Apr 25

BOI7:43 amBoise Air Term. Gowen Fld

7h 58m

1 stop

IAD5:41 pmWashington, D.C. Dulles Intl

Apr 29

IAD9:00 amWashington, D.C. Dulles Intl

8h 33m

1 stop

BOI3:33 pmBoise Air Term. Gowen Fld

$257

Alaska Airlines

May 20

BOI8:48 pmBoise Air Term. Gowen Fld

8h 46m

1 stop

IAD7:34 amWashington, D.C. Dulles Intl

May 27

IAD6:00 amWashington, D.C. Dulles Intl

8h 47m

1 stop

BOI12:47 pmBoise Air Term. Gowen Fld

$284

Fly from

Fly to

Route

Depart

Return

Price

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Thu 2/26

12:22 pm-1:00 pm

1 stop21h 38m

Washington, D.C. Reagan-National

Wed 3/4

8:00 am-11:27 am

1 stop30h 27m

$175

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 4/1

1:45 pm-11:49 pm

1 stop8h 04m

Washington, D.C. Dulles Intl

Tue 4/7

7:00 am-2:05 pm

1 stop9h 05m

$251

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sat 4/18

1:43 pm-11:34 pm

1 stop6h 51m

Washington, D.C. Dulles Intl

Sat 4/25

2:36 pm-9:35 pm

1 stop9h 59m

$251

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sat 4/25

5:00 am-2:59 pm

1 stop7h 59m

Washington, D.C. Reagan-National

Tue 4/28

7:30 am-3:24 pm

1 stop9h 54m

$251

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Wed 3/4

7:00 am-4:59 pm

1 stop6h 59m

Washington, D.C. Reagan-National

Wed 3/18

1:00 pm-5:51 pm

1 stop7h 51m

$251

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Thu 4/30

11:32 am-9:59 pm

1 stop7h 27m

Washington, D.C. Reagan-National

Tue 5/5

8:59 am-10:20 pm

1 stop16h 21m

$252

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 4/25

7:43 am-5:41 pm

1 stop7h 58m

Washington, D.C. Dulles Intl

Tue 4/28

7:10 am-3:33 pm

1 stop10h 23m

$257

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sat 4/25

1:29 pm-11:57 pm

1 stop8h 28m

Washington, D.C. Reagan-National

Wed 4/29

5:55 am-12:49 pm

1 stop8h 54m

$261

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 5/2

7:48 am-11:26 pm

2 stops13h 38m

Washington, D.C. Dulles Intl

Tue 5/12

7:00 am-1:13 pm

1 stop8h 13m

$282

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 5/20

8:48 pm-7:34 am

1 stop8h 46m

Washington, D.C. Dulles Intl

Wed 5/27

6:00 am-12:47 pm

1 stop8h 47m

$284

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Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Idaho 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

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

You could potentially save up to 70% on your flight if you consider stops on a Idaho to Washington, D.C. flight.

Cheap Idaho to Washington, D.C. flight deals and tips

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

Fastest flight time	5h 59m
Direct flights	Sun
Airports in Washington, D.C.	2 airports

The fastest flight from Idaho to Washington, D.C. takes 5h 59m

Direct flights go from Idaho to Washington, D.C. on Sunday. There are no airlines offering direct flights.

There are 2 airports in Washington, D.C.. From Idaho there are direct flights to Washington, D.C. Dulles Intl (IAD).

Search flight deals

When did momondo last update prices for flights from Idaho to Washington, D.C.?
Prices for flights from Idaho to Washington, D.C. were last updated today.
How many operators does momondo search for flights from Idaho to Washington, D.C.?
As of February 2026, there are 5 operators available to choose from for flights from Idaho to Washington, D.C..
How old do you have to be to fly from Idaho 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 to Washington, D.C..
What documentation or ID do you need to fly to Washington, D.C.?
The necessary travel and health documents for your Washington, D.C. trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

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

Compare and see reviews for airlines that fly from Idaho to Washington, D.C. with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $141	Free Cancellation	Rating 8.0 11,880 reviews	Search Alaska Airlines flights
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,186 reviews	Search Delta flights
United Airlines	PriceFrom $268	Free Cancellation	Rating 7.4 9,283 reviews	Search United Airlines flights
American Airlines	PriceFrom $300	Free Cancellation	Rating 7.2 11,275 reviews	Search American Airlines flights
Southwest	PriceFrom $340	Free Cancellation	Rating 8.0 4,283 reviews	Search Southwest flights

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Colonial Beach

Tysons

Silver Spring

Towson

Fredericksburg

Gaithersburg

Rockville

Manassas

Springfield

Fairfax

Linthicum Heights

Bethesda

Glen Burnie

Why use momondo?

Why should I use momondo to find a flight deal from Idaho 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 to Washington, D.C. for you.

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

Yes. momondo enables you to select and highlight flights to Washington, D.C. from Idaho with this policy.

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

momondo helps you find the best flight between Idaho and Washington, D.C. by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from Idaho 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. 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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Fly into one of these airports located in Washington, D.C.

Washington, D.C. Reagan-National Airport

Washington, D.C. Dulles Intl Airport

Cheap flights from Idaho to Washington, D.C. from $100

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 to Washington, D.C. departing on 4/23. 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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American Airlines flights from Idaho to Washington, D.C.

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How to get the cheapest flight ticket from Idaho to Washington, D.C.

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

What is the cheapest airline that flies from Idaho to Washington, D.C.?

What airlines fly to Washington, D.C.?

How many flights depart from Idaho to Washington, D.C. on average per week?

How long does it take to fly to Washington, D.C.?

Cheap Idaho to Washington, D.C. flight deals and tips

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

Fastest flight time

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Airports in Washington, D.C.

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

Compare and see reviews for airlines that fly from Idaho to Washington, D.C. with momondo

Traveling to a place near Washington, D.C.?

Why use momondo?

Why should I use momondo to find a flight deal from Idaho to Washington, D.C.?

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

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

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

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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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.

Fly your favorite airline to Washington, D.C.

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Cabin classes currently available on flights to Washington, D.C.

List of cabin classes available on flights landing in Washington, D.C.. Availability may vary depending on flight origin and airline.

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