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.

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 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 Idaho Falls and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 6h 28m on average. Another popular route from Idaho to Washington, D.C. is flying from Hailey to Washington, D.C. Dulles Intl Airport, which will take roughly 6h 41m. Keep in mind that layovers or delays could extend your travel time.

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 August 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.

$108 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.

2:50 pm - 6:20 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

13h 30m1 stop Las Vegas Harry Reid Intl

6:00 am - 1:55 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 55m1 stop Las Vegas Harry Reid Intl

$204Frontier

Mon, Sep 14 - Thu, Sep 17

2:50 pm - 6:20 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

13h 30m1 stop Las Vegas Harry Reid Intl

6:00 am - 1:55 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 55m1 stop Las Vegas Harry Reid Intl

$223Frontier

Fri, Oct 2 - Mon, Oct 12

5:00 am - 1:30 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

6h 30m1 stop Denver Intl

5:20 pm - 10:58 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

7h 38m1 stop Chicago O'Hare Intl

$303United Airlines

Sat, Sep 19 - Sat, Sep 26

12:31 pm - 9:13 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

6h 42m1 stop Chicago O'Hare Intl

2:05 pm - 9:32 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 27m1 stop Denver Intl

$303United Airlines

Mon, Oct 26 - Wed, Nov 18

12:17 pm - 10:56 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

8h 39m1 stop Seattle/Tacoma Intl

6:10 am - 1:44 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 34m1 stop Minneapolis St Paul

$303Delta

Tue, Sep 22 - Tue, Sep 29

11:10 pm - 9:19 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

8h 09m1 stop Atlanta Hartsfield-Jackson

7:23 am - 12:35 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

7h 12m1 stop Minneapolis St Paul

$303Delta

Mon, Oct 19 - Thu, Oct 29

3:24 pm - 12:16 amBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington

6h 52m1 stop Chicago O'Hare Intl

7:00 am - 1:51 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld

8h 51m1 stop Dallas/Fort Worth

$303American Airlines

Sat, Oct 17 - Wed, Oct 21

3:21 pm - 11:59 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

6h 38m1 stop Chicago O'Hare Intl

7:42 am - 2:31 pmDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

8h 49m1 stop Chicago O'Hare Intl

$303American Airlines

Sat, Sep 19 - Sat, Sep 26

4:20 pm - 6:30 amBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington

12h 10m1 stop Seattle/Tacoma Intl

7:15 pm - 9:56 amBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld

16h 41m1 stop Seattle/Tacoma Intl

$323Alaska Airlines

Tue, Sep 22 - Wed, Sep 23

4:41 pm - 5:40 amGEG Spokane-IAD Washington, D.C. Dulles Intl

9h 59m1 stop Seattle/Tacoma Intl

7:24 pm - 10:50 pmIAD Washington, D.C. Dulles Intl-GEG Spokane

30h 26m1 stop San Diego

$338Alaska Airlines

Mon, Oct 5 - Tue, Oct 6

Cheap last minute flights

Enter your travel dates to find the best prices.

1:59 pm - 12:34 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

8h 35m1 stop Atlanta Hartsfield-Jackson

7:10 am - 3:18 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

10h 08m1 stop Seattle/Tacoma Intl

$363Delta

Sat, Aug 22 - Wed, Aug 26

1:59 pm - 12:34 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

8h 35m1 stop Atlanta Hartsfield-Jackson

7:10 am - 3:18 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

10h 08m1 stop Seattle/Tacoma Intl

$363Delta

Sat, Aug 22 - Mon, Aug 24

12:24 pm - 9:59 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

7h 35m1 stop Denver Intl

1:59 pm - 11:29 amDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

23h 30m1 stop Denver Intl

$372Frontier

Thu, Aug 20 - Wed, Aug 26

5:40 am - 7:15 pmGEG Spokane-DCA Washington, D.C. Reagan-National

10h 35m1 stop Dallas/Fort Worth

9:07 am - 1:37 pmDCA Washington, D.C. Reagan-National-GEG Spokane

7h 30m1 stop Chicago O'Hare Intl

$476American Airlines

Sat, Aug 22 - Tue, Aug 25

5:40 am - 6:14 pmGEG Spokane-DCA Washington, D.C. Reagan-National

9h 34m2 stops Dallas/Fort Worth Charlotte Douglas

7:29 am - 2:09 pmDCA Washington, D.C. Reagan-National-GEG Spokane

9h 40m1 stop Phoenix Sky Harbor Intl

$481American Airlines

Sat, Aug 22 - Tue, Aug 25

1:27 pm - 11:59 pmGEG Spokane-IAD Washington, D.C. Dulles Intl

7h 32m1 stop Seattle/Tacoma Intl

5:47 pm - 11:59 pmIAD Washington, D.C. Dulles Intl-GEG Spokane

9h 12m1 stop Seattle/Tacoma Intl

$484Alaska Airlines

Sat, Aug 22 - Tue, Aug 25

12:24 pm - 9:59 pmBOI Boise Air Term. Gowen Fld-DCA Washington, D.C. Reagan-National

7h 35m1 stop Denver Intl

1:59 pm - 11:29 amDCA Washington, D.C. Reagan-National-BOI Boise Air Term. Gowen Fld

23h 30m1 stop Denver Intl

$490Frontier

Thu, Aug 20 - Sat, Aug 22

6:00 am - 4:55 pmGEG Spokane-DCA Washington, D.C. Reagan-National

7h 55m1 stop Chicago Midway

6:40 pm - 10:40 pmDCA Washington, D.C. Reagan-National-GEG Spokane

7h 00m1 stop Chicago Midway

$529Southwest

Mon, Aug 24 - Mon, Aug 24

6:00 am - 3:40 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington

7h 40m1 stop Portland

7:50 am - 2:22 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld

8h 32m1 stop Seattle/Tacoma Intl

$537Alaska Airlines

Sat, Aug 22 - Tue, Aug 25

6:10 am - 5:10 pmBOI Boise Air Term. Gowen Fld-BWI Baltimore/Washington

9h 00m1 stop Phoenix Sky Harbor Intl

9:40 am - 2:50 pmBWI Baltimore/Washington-BOI Boise Air Term. Gowen Fld

7h 10m1 stop Denver Intl

$552Southwest

Sat, Aug 22 - Tue, Aug 25

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Delta flights from Idaho to Washington, D.C.

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

Delta

Oct 17

BOI8:59 amBoise Air Term. Gowen Fld

9h 07m

1 stop

IAD8:06 pmWashington, D.C. Dulles Intl

Oct 26

IAD6:13 amWashington, D.C. Dulles Intl

6h 29m

1 stop

BOI10:42 amBoise Air Term. Gowen Fld

$303

Delta

Oct 19

BOI11:10 pmBoise Air Term. Gowen Fld

9h 44m

1 stop

BWI10:54 amBaltimore/Washington

Oct 21

BWI6:10 amBaltimore/Washington

8h 25m

2 stops

BOI12:35 pmBoise Air Term. Gowen Fld

$308

Delta

Oct 16

BOI11:10 pmBoise Air Term. Gowen Fld

8h 47m

1 stop

BWI9:57 amBaltimore/Washington

Oct 26

BWI7:21 pmBaltimore/Washington

6h 38m

1 stop

BOI11:59 pmBoise Air Term. Gowen Fld

$314

Frontier flights from Idaho to Washington, D.C.

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

Frontier

Sep 14

BOI2:50 pmBoise Air Term. Gowen Fld

13h 30m

1 stop

IAD6:20 amWashington, D.C. Dulles Intl

Sep 17

IAD6:00 amWashington, D.C. Dulles Intl

9h 55m

1 stop

BOI1:55 pmBoise Air Term. Gowen Fld

$204

Frontier

Oct 2

BOI2:50 pmBoise Air Term. Gowen Fld

13h 30m

1 stop

IAD6:20 amWashington, D.C. Dulles Intl

Oct 12

IAD6:00 amWashington, D.C. Dulles Intl

9h 55m

1 stop

BOI1:55 pmBoise Air Term. Gowen Fld

$223

Frontier

Oct 8

BOI2:50 pmBoise Air Term. Gowen Fld

13h 30m

1 stop

IAD6:20 amWashington, D.C. Dulles Intl

Oct 12

IAD6:00 amWashington, D.C. Dulles Intl

9h 55m

1 stop

BOI1:55 pmBoise Air Term. Gowen Fld

$268

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

BoiseWashington, D.C.

BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl

BOIIAD

Boise Air Term. Gowen Fld

Mon 9/14

2:50 pm-6:20 am

1 stop13h 30m

Washington, D.C. Dulles Intl

Thu 9/17

6:00 am-1:55 pm

1 stop9h 55m

$204

BoiseWashington, D.C.

BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl

BOIIAD

Boise Air Term. Gowen Fld

Fri 10/2

2:50 pm-6:20 am

1 stop13h 30m

Washington, D.C. Dulles Intl

Mon 10/12

6:00 am-1:55 pm

1 stop9h 55m

$223

Quickest round-trip

BoiseWashington, D.C.

BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl

BOIIAD

Boise Air Term. Gowen Fld

Sat 9/19

5:00 am-1:30 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Sat 9/26

5:20 pm-10:58 pm

1 stop7h 38m

$303

BoiseWashington, D.C.

BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl

BOIIAD

Boise Air Term. Gowen Fld

Mon 10/26

12:31 pm-9:13 pm

1 stop6h 42m

Washington, D.C. Dulles Intl

Wed 11/18

2:05 pm-9:32 pm

1 stop9h 27m

$303

BoiseWashington, D.C.

BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl

BOIIAD

Boise Air Term. Gowen Fld

Tue 9/22

12:17 pm-10:56 pm

1 stop8h 39m

Washington, D.C. Dulles Intl

Tue 9/29

6:10 am-1:44 pm

1 stop9h 34m

$303

BoiseWashington, D.C.

BOI Boise Air Term. Gowen Fld - IAD Washington, D.C. Dulles Intl

BOIIAD

Boise Air Term. Gowen Fld

Mon 10/19

11:10 pm-9:19 am

1 stop8h 09m

Washington, D.C. Dulles Intl

Thu 10/29

7:23 am-12:35 pm

1 stop7h 12m

$303

BoiseBaltimore

BOI Boise Air Term. Gowen Fld - BWI Baltimore/Washington

BOIBWI

Boise Air Term. Gowen Fld

Sat 10/17

3:24 pm-12:16 am

1 stop6h 52m

Baltimore/Washington

Wed 10/21

7:00 am-1:51 pm

1 stop8h 51m

$303

BoiseWashington, D.C.

BOI Boise Air Term. Gowen Fld - DCA Washington, D.C. Reagan-National

BOIDCA

Boise Air Term. Gowen Fld

Sat 9/19

3:21 pm-11:59 pm

1 stop6h 38m

Washington, D.C. Reagan-National

Sat 9/26

7:42 am-2:31 pm

1 stop8h 49m

$303

BoiseBaltimore

BOI Boise Air Term. Gowen Fld - BWI Baltimore/Washington

BOIBWI

Boise Air Term. Gowen Fld

Tue 9/22

4:20 pm-6:30 am

1 stop12h 10m

Baltimore/Washington

Wed 9/23

7:15 pm-9:56 am

1 stop16h 41m

$323

SpokaneWashington, D.C.

GEG Spokane - IAD Washington, D.C. Dulles Intl

GEGIAD

Spokane

Mon 10/5

4:41 pm-5:40 am

1 stop9h 59m

Washington, D.C. Dulles Intl

Tue 10/6

7:24 pm-10:50 pm

1 stop30h 26m

$338

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 February is, on average, the cheapest month to fly to Washington, D.C. from Idaho, with most prices found around $401. If you’re not able to fly to Washington, D.C. in February, then May is your next best option. Flight prices from Idaho to Washington, D.C. during May average around $415.

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

You could potentially save up to 62% 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.

Best Price Found	$108
Fastest flight time	6h 03m
Direct flights	None

The best one-way flight to Washington, D.C. from Idaho in the past 72 hours is $108. The best round-trip flight deal from Idaho to Washington, D.C. found on momondo in the last 72 hours is $204.

The fastest flight from Idaho to Washington, D.C. takes 6h 03m

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 August 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 $176	Free Cancellation	Rating 7.8 8,507 reviews	Search Delta flights
Alaska Airlines	PriceFrom $245	Free Cancellation	Rating 7.9 12,821 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 10,102 reviews	Search United Airlines flights
American Airlines	PriceFrom $296	Free Cancellation	Rating 7.1 11,974 reviews	Search American Airlines flights
Southwest	PriceFrom $336	Free Cancellation	Rating 8.0 4,215 reviews	Search Southwest flights

Alexandria

National Harbor

Arlington

Gettysburg

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Linthicum Heights

Rockville

Silver Spring

Towson

Springfield

Colonial Beach

Fairfax

Edgewood

Tysons

College Park

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 $108

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 9/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Delta flights from Idaho to Washington, D.C.

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

Frontier flights from Idaho to Washington, D.C.

Our best Frontier 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 long does it take to fly to Washington, D.C.?

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

Best Price Found

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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

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