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

Flight times from Idaho to Washington, D.C. Dulles Intl Airport vary, but if you’re flying out of Boise and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 6h 01m on average. Another popular route from Idaho to Washington, D.C. Dulles Intl Airport is flying from Idaho Falls to Washington, D.C. Dulles Intl Airport, which will take roughly 6h 40m. 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. Dulles Intl?

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

What airlines fly to Washington, D.C. Dulles Intl Airport?

United Airlines, Delta and Alaska Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Idaho according to our data. United Airlines is the first choice among our users, with 51% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 4 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

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

The number of operators available for flights from Idaho to Washington, D.C. Dulles Intl Airport is 4 as of August 2026.

How old do you have to be to fly from Idaho to Washington, D.C. Dulles Intl Airport?

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Washington, D.C. Dulles Intl Airport.

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

The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$147 Cheap Flights from Idaho to Washington, D.C. Dulles Intl Airport 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

$244Frontier

Mon, Oct 19 - Thu, Oct 22

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

$244Frontier

Thu, Oct 8 - Mon, Oct 12

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

$263Frontier

Fri, Sep 18 - Mon, Sep 21

8:59 am - 8:06 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

9h 07m1 stop Seattle/Tacoma Intl

7:05 am - 3:20 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

10h 15m1 stop Seattle/Tacoma Intl

$303Delta

Mon, Nov 2 - Thu, Nov 5

10:34 am - 10:56 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

10h 22m1 stop Seattle/Tacoma Intl

7:25 am - 3:16 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 51m1 stop Seattle/Tacoma Intl

$303Delta

Tue, Sep 22 - Tue, Sep 29

12:28 pm - 9:20 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

6h 52m1 stop Chicago O'Hare Intl

4:15 pm - 9:45 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

7h 30m1 stop Denver Intl

$303United Airlines

Wed, Sep 9 - Fri, Sep 11

10:34 am - 10:49 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

10h 15m1 stop Seattle/Tacoma Intl

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 26 - Thu, Oct 29

6:50 pm - 5:46 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

8h 56m1 stop San Francisco

4:10 pm - 9:32 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

7h 22m1 stop Denver Intl

$327United Airlines

Fri, Oct 23 - Tue, Oct 27

6:32 pm - 5:40 amGEG Spokane-IAD Washington, D.C. Dulles Intl

8h 08m1 stop Seattle/Tacoma Intl

7:02 am - 12:54 pmIAD Washington, D.C. Dulles Intl-GEG Spokane

8h 52m1 stop Seattle/Tacoma Intl

$337Alaska Airlines

Sat, Sep 26 - Sat, Oct 3

4:20 pm - 5:40 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

11h 20m1 stop Seattle/Tacoma Intl

7:47 pm - 2:02 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

20h 15m1 stop San Diego

$343Alaska Airlines

Sat, Sep 26 - Mon, Sep 28

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

7:25 am - 3:16 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 51m1 stop Seattle/Tacoma Intl

$333Delta

Fri, Sep 4 - Wed, Sep 30

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

8h 35m1 stop Atlanta Hartsfield-Jackson

6:00 am - 1:01 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 01m1 stop Atlanta Hartsfield-Jackson

$333Delta

Fri, Sep 4 - Wed, Sep 9

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

8h 35m1 stop Atlanta Hartsfield-Jackson

7:00 am - 12:16 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

7h 16m1 stop Salt Lake City

$333Delta

Fri, Sep 4 - Wed, Sep 9

4:20 pm - 5:40 amBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

11h 20m1 stop Seattle/Tacoma Intl

5:47 pm - 11:44 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

7h 57m1 stop Seattle/Tacoma Intl

$418Alaska Airlines

Wed, Sep 2 - Fri, Sep 4

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

7h 32m1 stop Seattle/Tacoma Intl

7:00 am - 12:31 pmIAD Washington, D.C. Dulles Intl-GEG Spokane

8h 31m1 stop Seattle/Tacoma Intl

$427Alaska Airlines

Thu, Sep 3 - Mon, Sep 7

6:23 am - 4:44 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

8h 21m1 stop Seattle/Tacoma Intl

5:57 pm - 9:56 amIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

17h 59m1 stop Seattle/Tacoma Intl

$496Alaska Airlines

Fri, Sep 4 - Tue, Sep 8

7:00 am - 6:27 pmIDA Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl

9h 27m1 stop Dallas/Fort Worth

2:53 pm - 9:20 pmIAD Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field

8h 27m1 stop Dallas/Fort Worth

$523American Airlines

Wed, Sep 2 - Mon, Sep 7

7:00 am - 6:27 pmIDA Idaho Falls Fanning Field-IAD Washington, D.C. Dulles Intl

9h 27m1 stop Dallas/Fort Worth

6:09 am - 11:30 amIAD Washington, D.C. Dulles Intl-IDA Idaho Falls Fanning Field

7h 21m1 stop Dallas/Fort Worth

$523American Airlines

Wed, Sep 2 - Mon, Sep 7

5:00 am - 4:35 pmGEG Spokane-IAD Washington, D.C. Dulles Intl

8h 35m2 stops Denver Intl Cincinnati Cinci./N. Kentucky

8:19 am - 3:06 pmIAD Washington, D.C. Dulles Intl-GEG Spokane

9h 47m2 stops Atlanta Hartsfield-Jackson Denver Intl

$1,583United Airlines

Tue, Sep 1 - Thu, Sep 3

5:00 am - 4:02 pmBOI Boise Air Term. Gowen Fld-IAD Washington, D.C. Dulles Intl

9h 02m2 stops Denver Intl Chicago O'Hare Intl

3:15 pm - 11:03 pmIAD Washington, D.C. Dulles Intl-BOI Boise Air Term. Gowen Fld

9h 48m2 stops Chicago O'Hare Intl Denver Intl

$1,863United Airlines

Wed, Sep 2 - Tue, Sep 8

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American Airlines flights from Idaho to Washington, D.C. Dulles Intl Airport

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

American Airlines

Oct 10

GEG12:49 pmSpokane

7h 34m

1 stop

IAD11:23 pmWashington, D.C. Dulles Intl

Oct 17

IAD6:42 amWashington, D.C. Dulles Intl

8h 17m

1 stop

GEG11:59 amSpokane

$353

American Airlines

Nov 7

IDA1:35 pmIdaho Falls Fanning Field

7h 55m

1 stop

IAD11:30 pmWashington, D.C. Dulles Intl

Nov 11

IAD7:14 amWashington, D.C. Dulles Intl

7h 51m

1 stop

IDA1:05 pmIdaho Falls Fanning Field

$359

American Airlines

Oct 13

GEG12:49 pmSpokane

7h 34m

1 stop

IAD11:23 pmWashington, D.C. Dulles Intl

Oct 28

IAD6:42 amWashington, D.C. Dulles Intl

8h 17m

1 stop

GEG11:59 amSpokane

$375

United Airlines flights from Idaho to Washington, D.C. Dulles Intl Airport

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

United Airlines

Sep 9

BOI12:28 pmBoise Air Term. Gowen Fld

6h 52m

1 stop

IAD9:20 pmWashington, D.C. Dulles Intl

Sep 11

IAD4:15 pmWashington, D.C. Dulles Intl

7h 30m

1 stop

BOI9:45 pmBoise Air Term. Gowen Fld

$303

United Airlines

Oct 13

BOI12:26 pmBoise Air Term. Gowen Fld

8h 26m

1 stop

IAD10:52 pmWashington, D.C. Dulles Intl

Oct 17

IAD6:10 amWashington, D.C. Dulles Intl

7h 18m

1 stop

BOI11:28 amBoise Air Term. Gowen Fld

$358

United Airlines

Oct 13

GEG1:05 pmSpokane

9h 01m

1 stop

IAD1:06 amWashington, D.C. Dulles Intl

Oct 28

IAD6:11 amWashington, D.C. Dulles Intl

9h 18m

1 stop

GEG12:29 pmSpokane

$367

momondo Fare Finder

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

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 10/19

2:50 pm-6:20 am

1 stop13h 30m

Washington, D.C. Dulles Intl

Thu 10/22

6:00 am-1:55 pm

1 stop9h 55m

$244

BoiseWashington, D.C.

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

BOIIAD

Boise Air Term. Gowen Fld

Thu 10/8

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

$244

BoiseWashington, D.C.

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

BOIIAD

Boise Air Term. Gowen Fld

Fri 9/18

2:50 pm-6:20 am

1 stop13h 30m

Washington, D.C. Dulles Intl

Mon 9/21

6:00 am-1:55 pm

1 stop9h 55m

$263

BoiseWashington, D.C.

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

BOIIAD

Boise Air Term. Gowen Fld

Mon 11/2

8:59 am-8:06 pm

1 stop9h 07m

Washington, D.C. Dulles Intl

Thu 11/5

7:05 am-3:20 pm

1 stop10h 15m

$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

10:34 am-10:56 pm

1 stop10h 22m

Washington, D.C. Dulles Intl

Tue 9/29

7:25 am-3:16 pm

1 stop9h 51m

$303

Quickest round-trip

BoiseWashington, D.C.

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

BOIIAD

Boise Air Term. Gowen Fld

Wed 9/9

12:28 pm-9:20 pm

1 stop6h 52m

Washington, D.C. Dulles Intl

Fri 9/11

4:15 pm-9:45 pm

1 stop7h 30m

$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

10:34 am-10:49 pm

1 stop10h 15m

Washington, D.C. Dulles Intl

Thu 10/29

7:23 am-12:35 pm

1 stop7h 12m

$303

BoiseWashington, D.C.

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

BOIIAD

Boise Air Term. Gowen Fld

Fri 10/23

6:50 pm-5:46 am

1 stop8h 56m

Washington, D.C. Dulles Intl

Tue 10/27

4:10 pm-9:32 pm

1 stop7h 22m

$327

SpokaneWashington, D.C.

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

GEGIAD

Spokane

Sat 9/26

6:32 pm-5:40 am

1 stop8h 08m

Washington, D.C. Dulles Intl

Sat 10/3

7:02 am-12:54 pm

1 stop8h 52m

$337

BoiseWashington, D.C.

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

BOIIAD

Boise Air Term. Gowen Fld

Sat 9/26

4:20 pm-5:40 am

1 stop11h 20m

Washington, D.C. Dulles Intl

Mon 9/28

7:47 pm-2:02 pm

1 stop20h 15m

$343

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. Dulles Intl Airport

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. Dulles Intl Airport?

In general, May is the cheapest month to fly from Idaho to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $340. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of May, then flying in July is also cheap. Prices for this month can be found on momondo for an average of $397.

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

You could potentially save up to 71% on your flight if you consider stops on a Idaho to Washington, D.C. Dulles Intl Airport flight.

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

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

Best Price Found	$147
Fastest flight time	6h 01m
Direct flights	None

The best one-way flight to Washington, D.C. Dulles Intl Airport from Idaho in the past 72 hours is $147. The best round-trip flight deal from Idaho to Washington, D.C. Dulles Intl Airport found on momondo in the last 72 hours is $244.

The fastest flight from Idaho to Washington, D.C. Dulles Intl Airport takes 6h 01m

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

Search flight deals

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

When did momondo last update prices for flights from Idaho to Washington, D.C. Dulles Intl Airport?
Prices for flights from Idaho to Washington, D.C. Dulles Intl Airport are updated daily.
How many operators does momondo search for flights from Idaho to Washington, D.C. Dulles Intl Airport?
The number of operators available for flights from Idaho to Washington, D.C. Dulles Intl Airport is 4 as of August 2026.
How old do you have to be to fly from Idaho to Washington, D.C. Dulles Intl Airport?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Idaho to Washington, D.C. Dulles Intl Airport.
What documentation or ID do you need to fly to Washington, D.C. Dulles Intl Airport?
The required travel and health documents for your Washington, D.C. Dulles Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Washington, D.C. Dulles Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Idaho to Washington, D.C. Dulles Intl Airport

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

Airline	Rating	Free Cancellation	Price
Delta	PriceFrom $176	Free Cancellation	Rating 7.8 8,535 reviews	Search Delta flights
Alaska Airlines	PriceFrom $245	Free Cancellation	Rating 7.9 12,864 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 10,148 reviews	Search United Airlines flights
Southwest	PriceFrom $340	Free Cancellation	Rating 8.0 4,199 reviews	Search Southwest flights

Alexandria

National Harbor

Arlington

Gettysburg

Winchester

Laurel

Waldorf

Fredericksburg

Woodbridge

Gaithersburg

Linthicum Heights

Rockville

Silver Spring

Towson

Sterling

Springfield

Fairfax

Colonial Beach

Edgewood

Glen Burnie

Why use momondo?

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

Finding the right flight to Washington, D.C. from Idaho is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Washington, D.C. quick and easy, saving you time and money.

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

Yes. All flights to Washington, D.C. from Idaho on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight 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?

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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Cheap flights from Idaho to Washington, D.C. from $147

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 10/9. 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. Dulles Intl Airport

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

United Airlines flights from Idaho to Washington, D.C. Dulles Intl Airport

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

momondo Fare Finder

Use the filters below to find and compare flights from Idaho to Washington, D.C. Dulles Intl Airport 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. Dulles Intl Airport

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

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

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

What airlines fly to Washington, D.C. Dulles Intl Airport?

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

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

Best Price Found

Fastest flight time

Direct flights

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

Best airlines flying from Idaho to Washington, D.C. Dulles Intl Airport

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

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

Why use momondo?

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

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

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