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 04m 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 13m. Keep in mind that layovers or delays could extend your travel time.

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

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

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 16 per week as of July 2026. The most frequent departure day is Mon, with 19% of weekly flights leaving on this day.

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 35% 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.

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 July 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.

$121 Cheap Flights from Idaho to Washington, D.C. in 2026

Discover deals from 900+ travel sites with momondo.

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

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

1:24 pm - 12:51 pm

BOI

DCA

21h 27m

1 stop

7:00 am - 12:29 pm

DCA

BOI

7h 29m

1 stop

$242Frontier

Sun, Aug 9 - Sun, Aug 16

1:24 pm - 12:51 pm

BOI

DCA

21h 27m

1 stop

6:00 pm - 12:29 pm

DCA

BOI

20h 29m

1 stop

$243Frontier

Sun, Jul 26 - Sat, Aug 1

11:03 am - 8:14 pm

BOI

IAD

7h 11m

1 stop

7:25 am - 3:17 pm

IAD

BOI

9h 52m

1 stop

$293Delta

Sat, Sep 19 - Tue, Sep 22

2:11 pm - 11:43 pm

BOI

DCA

7h 32m

1 stop

4:41 pm - 10:59 pm

DCA

BOI

8h 18m

1 stop

$293Delta

Sat, Sep 19 - Tue, Sep 22

5:40 am - 6:27 pm

GEG

IAD

9h 47m

1 stop

6:09 am - 11:54 am

IAD

GEG

8h 45m

1 stop

$295American Airlines

Wed, Aug 26 - Wed, Sep 2

10:12 am - 8:04 am

GEG

IAD

18h 52m

1 stop

8:59 am - 9:19 am

IAD

GEG

27h 20m

1 stop

$304Multiple Airlines

Sun, Aug 23 - Wed, Sep 2

10:12 am - 8:04 am

GEG

IAD

18h 52m

1 stop

8:59 am - 9:19 am

IAD

GEG

27h 20m

1 stop

$306Multiple Airlines

Sun, Aug 23 - Wed, Sep 2

4:55 pm - 6:35 am

GEG

BWI

10h 40m

1 stop

5:40 pm - 10:55 pm

BWI

GEG

8h 15m

1 stop

$307Southwest

Wed, Aug 26 - Wed, Sep 2

12:44 pm - 11:58 pm

GEG

DCA

8h 14m

1 stop

7:35 am - 1:37 pm

DCA

GEG

9h 02m

1 stop

$312American Airlines

Wed, Sep 2 - Mon, Sep 7

4:55 pm - 6:35 am

GEG

BWI

10h 40m

1 stop

2:50 pm - 10:05 pm

BWI

GEG

10h 15m

2 stops

$312Southwest

Wed, Aug 26 - Wed, Sep 2

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

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

United Airlines

Sep 2

GEG5:00 amSpokane

9h 50m

1 stop

IAD5:50 pmWashington, D.C. Dulles Intl

Sep 7

IAD6:30 amWashington, D.C. Dulles Intl

9h 05m

1 stop

GEG12:35 pmSpokane

$312

United Airlines

Aug 28

GEG1:37 pmSpokane

7h 55m

1 stop

IAD12:32 amWashington, D.C. Dulles Intl

Sep 2

IAD2:47 pmWashington, D.C. Dulles Intl

10h 49m

1 stop

GEG10:36 pmSpokane

$316

United Airlines

Oct 28

GEG5:00 amSpokane

7h 42m

1 stop

IAD3:42 pmWashington, D.C. Dulles Intl

Nov 1

IAD6:30 amWashington, D.C. Dulles Intl

9h 17m

1 stop

GEG12:47 pmSpokane

$320

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

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

American Airlines

Aug 26

GEG5:40 amSpokane

9h 47m

1 stop

IAD6:27 pmWashington, D.C. Dulles Intl

Sep 2

IAD6:09 amWashington, D.C. Dulles Intl

8h 45m

1 stop

GEG11:54 amSpokane

$295

American Airlines

Sep 24

GEG2:09 pmSpokane

6h 50m

1 stop

DCA11:59 pmWashington, D.C. Reagan-National

Sep 29

DCA5:00 amWashington, D.C. Reagan-National

9h 55m

1 stop

GEG11:55 amSpokane

$312

American Airlines

Aug 28

GEG12:44 pmSpokane

8h 14m

1 stop

DCA11:58 pmWashington, D.C. Reagan-National

Sep 2

DCA3:12 pmWashington, D.C. Reagan-National

8h 30m

1 stop

GEG8:42 pmSpokane

$316

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sun 8/9

1:24 pm-12:51 pm

1 stop21h 27m

Washington, D.C. Reagan-National

Sun 8/16

7:00 am-12:29 pm

1 stop7h 29m

$242

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sun 7/26

1:24 pm-12:51 pm

1 stop21h 27m

Washington, D.C. Reagan-National

Sat 8/1

6:00 pm-12:29 pm

1 stop20h 29m

$243

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 9/19

11:03 am-8:14 pm

1 stop7h 11m

Washington, D.C. Dulles Intl

Tue 9/22

7:25 am-3:17 pm

1 stop9h 52m

$293

Quickest round-trip

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Sat 9/19

2:11 pm-11:43 pm

1 stop7h 32m

Washington, D.C. Reagan-National

Tue 9/22

4:41 pm-10:59 pm

1 stop8h 18m

$293

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 8/26

5:40 am-6:27 pm

1 stop9h 47m

Washington, D.C. Dulles Intl

Wed 9/2

6:09 am-11:54 am

1 stop8h 45m

$295

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sun 8/23

10:12 am-8:04 am

1 stop18h 52m

Washington, D.C. Dulles Intl

Wed 9/2

8:59 am-9:19 am

1 stop27h 20m

$304

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sun 8/23

10:12 am-8:04 am

1 stop18h 52m

Washington, D.C. Dulles Intl

Wed 9/2

8:59 am-9:19 am

1 stop27h 20m

$306

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Wed 8/26

4:55 pm-6:35 am

1 stop10h 40m

Baltimore/Washington

Wed 9/2

5:40 pm-10:55 pm

1 stop8h 15m

$307

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Wed 9/2

12:44 pm-11:58 pm

1 stop8h 14m

Washington, D.C. Reagan-National

Mon 9/7

7:35 am-1:37 pm

1 stop9h 02m

$312

SpokaneBaltimore

GEG - BWI

GEGBWI

Spokane

Wed 8/26

4:55 pm-6:35 am

1 stop10h 40m

Baltimore/Washington

Wed 9/2

2:50 pm-10:05 pm

2 stops10h 15m

$312

Flights are sorted by cheapest round-trip flights first.

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

Prices

Airlines

Other information

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

The month of May is, on average, the cheapest month to fly to Washington, D.C. from Idaho, with most prices found around $78. If you’re not able to fly to Washington, D.C. in May, then December is your next best option. Flight prices from Idaho to Washington, D.C. during December average around $162.

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

You could potentially save up to 63% 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 54m
Direct flights	Sun
Airports in Washington, D.C.	2 airports

The fastest flight from Idaho to Washington, D.C. takes 5h 54m

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

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

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 July 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
Delta	PriceFrom $196	Free Cancellation	Rating 7.8 8,452 reviews	Search Delta flights
Alaska Airlines	PriceFrom $245	Free Cancellation	Rating 7.9 12,600 reviews	Search Alaska Airlines flights
American Airlines	PriceFrom $277	Free Cancellation	Rating 7.1 11,765 reviews	Search American Airlines flights
United Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 9,909 reviews	Search United Airlines flights
Southwest	PriceFrom $340	Free Cancellation	Rating 7.9 4,246 reviews	Search Southwest flights

Alexandria

National Harbor

Arlington

Gettysburg

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Linthicum Heights

Rockville

Colonial Beach

Towson

Manassas

Silver Spring

Tysons

Springfield

Bethesda

Fairfax

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 $121

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 8/6. 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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United Airlines flights from Idaho to Washington, D.C.

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

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

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

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

What is the cheapest month to fly 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

Direct flights

Airports in Washington, D.C.

Frequently asked questions about flying from Idaho to 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?

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.

Fly your favorite airline to Washington, D.C.

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

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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