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 19m 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 26m. 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.?

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

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 40% 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 April 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.

$80 Cheap Flights from Idaho to Washington, D.C. in 2026

1 adult

0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

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.

11:44 am - 12:59 pm

GEG

DCA

22h 15m

1 stop

6:00 pm - 10:49 am

DCA

GEG

19h 49m

1 stop

$180Frontier

Sun, Apr 19 - Sat, Apr 25

11:44 am - 9:59 pm

GEG

DCA

7h 15m

1 stop

6:00 pm - 10:49 am

DCA

GEG

19h 49m

1 stop

$185Frontier

Thu, Apr 23 - Sat, May 2

1:52 pm - 11:55 pm

BOI

IAD

8h 03m

1 stop

7:00 am - 1:12 pm

IAD

BOI

8h 12m

1 stop

$263Delta

Sat, Apr 25 - Tue, Apr 28

3:23 pm - 11:43 pm

BOI

DCA

6h 20m

1 stop

5:10 pm - 11:57 pm

DCA

BOI

8h 47m

1 stop

$263Delta

Thu, Apr 23 - Mon, Apr 27

2:18 pm - 12:39 am

BOI

BWI

8h 21m

1 stop

6:00 am - 1:07 pm

BWI

BOI

9h 07m

1 stop

$263Delta

Sat, Apr 25 - Tue, Apr 28

4:05 pm - 5:40 am

BOI

BWI

11h 35m

1 stop

5:05 pm - 12:25 am

BWI

BOI

9h 20m

2 stops

$274Southwest

Wed, Apr 29 - Wed, May 6

7:00 am - 11:40 pm

GEG

IAD

13h 40m

2 stops

5:30 pm - 10:55 pm

IAD

GEG

8h 25m

1 stop

$276Southwest

Tue, Apr 21 - Wed, Apr 22

6:05 am - 11:26 pm

GEG

IAD

14h 21m

2 stops

3:26 pm - 11:10 pm

IAD

GEG

10h 44m

2 stops

$282American Airlines

Wed, Apr 22 - Sat, May 2

1:29 pm - 11:57 pm

BOI

DCA

8h 28m

1 stop

5:55 am - 12:49 pm

DCA

BOI

8h 54m

1 stop

$297American Airlines

Sat, Apr 25 - Mon, May 4

11:44 am - 12:59 pm

GEG

DCA

22h 15m

1 stop

9:59 am - 5:32 pm

DCA

GEG

10h 33m

1 stop

$320Multiple Airlines

Sun, Apr 26 - Wed, Apr 29

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 30

BOI6:08 pmBoise Air Term. Gowen Fld

9h 36m

1 stop

BWI5:44 amBaltimore/Washington

May 6

BWI7:04 amBaltimore/Washington

10h 29m

1 stop

BOI3:33 pmBoise Air Term. Gowen Fld

$348

Alaska Airlines

Apr 28

GEG6:00 amSpokane

9h 20m

1 stop

IAD6:20 pmWashington, D.C. Dulles Intl

May 2

IAD7:10 amWashington, D.C. Dulles Intl

9h 13m

1 stop

GEG1:23 pmSpokane

$351

Alaska Airlines

Apr 15

BOI2:22 pmBoise Air Term. Gowen Fld

13h 18m

1 stop

IAD5:40 amWashington, D.C. Dulles Intl

Apr 18

IAD6:22 pmWashington, D.C. Dulles Intl

22h 43m

2 stops

BOI3:05 pmBoise Air Term. Gowen Fld

$660

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 22

GEG6:05 amSpokane

14h 21m

2 stops

IAD11:26 pmWashington, D.C. Dulles Intl

May 2

IAD3:26 pmWashington, D.C. Dulles Intl

10h 44m

2 stops

GEG11:10 pmSpokane

$282

American Airlines

Apr 29

BOI6:26 pmBoise Air Term. Gowen Fld

12h 23m

2 stops

IAD8:49 amWashington, D.C. Dulles Intl

May 2

IAD7:00 amWashington, D.C. Dulles Intl

8h 03m

1 stop

BOI1:03 pmBoise Air Term. Gowen Fld

$306

American Airlines

Apr 29

BOI6:26 pmBoise Air Term. Gowen Fld

12h 23m

2 stops

IAD8:49 amWashington, D.C. Dulles Intl

May 2

IAD7:00 amWashington, D.C. Dulles Intl

8h 03m

1 stop

BOI1:03 pmBoise Air Term. Gowen Fld

$311

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Sun 4/19

11:44 am-12:59 pm

1 stop22h 15m

Washington, D.C. Reagan-National

Sat 4/25

6:00 pm-10:49 am

1 stop19h 49m

$180

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Thu 4/23

11:44 am-9:59 pm

1 stop7h 15m

Washington, D.C. Reagan-National

Sat 5/2

6:00 pm-10:49 am

1 stop19h 49m

$185

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 4/25

1:52 pm-11:55 pm

1 stop8h 03m

Washington, D.C. Dulles Intl

Tue 4/28

7:00 am-1:12 pm

1 stop8h 12m

$263

Quickest round-trip

BoiseWashington, D.C.

BOI - DCA

BOIDCA

Boise Air Term. Gowen Fld

Thu 4/23

3:23 pm-11:43 pm

1 stop6h 20m

Washington, D.C. Reagan-National

Mon 4/27

5:10 pm-11:57 pm

1 stop8h 47m

$263

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Sat 4/25

2:18 pm-12:39 am

1 stop8h 21m

Baltimore/Washington

Tue 4/28

6:00 am-1:07 pm

1 stop9h 07m

$263

BoiseBaltimore

BOI - BWI

BOIBWI

Boise Air Term. Gowen Fld

Wed 4/29

4:05 pm-5:40 am

1 stop11h 35m

Baltimore/Washington

Wed 5/6

5:05 pm-12:25 am

2 stops9h 20m

$274

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Tue 4/21

7:00 am-11:40 pm

2 stops13h 40m

Washington, D.C. Dulles Intl

Wed 4/22

5:30 pm-10:55 pm

1 stop8h 25m

$276

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 4/22

6:05 am-11:26 pm

2 stops14h 21m

Washington, D.C. Dulles Intl

Sat 5/2

3:26 pm-11:10 pm

2 stops10h 44m

$282

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

Mon 5/4

5:55 am-12:49 pm

1 stop8h 54m

$297

SpokaneWashington, D.C.

GEG - DCA

GEGDCA

Spokane

Sun 4/26

11:44 am-12:59 pm

1 stop22h 15m

Washington, D.C. Reagan-National

Wed 4/29

9:59 am-5:32 pm

1 stop10h 33m

$320

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

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

You could potentially save up to 55% 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	None

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

There are no direct flights from Idaho to Washington, D.C.. There are no popular flight routes from Idaho to Washington, D.C..

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 April 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 7.9 12,145 reviews	Search Alaska Airlines flights
Delta	PriceFrom $194	Free Cancellation	Rating 7.9 8,368 reviews	Search Delta flights
United Airlines	PriceFrom $283	Free Cancellation	Rating 7.4 9,529 reviews	Search United Airlines flights
American Airlines	PriceFrom $300	Free Cancellation	Rating 7.1 11,544 reviews	Search American Airlines flights
Southwest	PriceFrom $336	Free Cancellation	Rating 8.0 4,335 reviews	Search Southwest flights

Alexandria

National Harbor

Gettysburg

Arlington

Waldorf

Woodbridge

Laurel

Colonial Beach

Gaithersburg

Towson

Silver Spring

Fredericksburg

Rockville

Tysons

Manassas

Linthicum Heights

Springfield

Bethesda

Fairfax

College Park

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.

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.

Start using Trips

Find my bookings

Get notified when prices go down

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

1 adult

Fri 5/1

Fri 5/8

Email me momondo's favorite deals

By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States

Nearby airports

Airlines

Cabin classes

Other United States destinations

Other flights from Idaho

Complete your trip

Feeling lucky

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 $80

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 5/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names and deals

Big names and deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

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

Cheap round-trip flights

Cheap one-way flights

Cheap last minute flights

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

Our best Alaska 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

momondo Fare Finder

Use the filters below to find and compare flights from Idaho to Washington, D.C. that are best for you.

See travel insights to Washington, D.C. from

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 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

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

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.

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.

Popular cities in the United States

Popular flights according to clicks in the last 7 days on momondo

Fly to other destinations from Idaho

According to popular flight searches on momondo this year

Complete your trip to Washington, D.C.

Explore popular destinations other users love

According to popular flight searches on momondo this year