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

United Airlines, Alaska Airlines and Delta 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 60% 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.

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

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

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

As of December 2025, there are 7 flights per week flying from Idaho to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

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 5h 55m on average. Another popular route from Idaho to Washington, D.C. Dulles Intl Airport is flying from Twin Falls to Washington, D.C. Dulles Intl Airport, which will take roughly 6h 02m. Keep in mind that layovers or delays could extend your travel time.

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 December 2025.

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.

$128 Cheap Flights from Idaho to Washington, D.C. Dulles Intl Airport in 2025/26

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One-way

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Cheap round-trip flights

Enter your travel dates to find the best prices.

11:35 am - 4:26 pm

BOI

IAD

26h 51m1 stop

6:04 pm - 3:10 pm

IAD

BOI

23h 06m1 stop

$226Alaska Airlines

Wed, Jan 28 - Wed, Feb 4

10:41 am - 11:10 pm

BOI

IAD

10h 29m1 stop

7:00 am - 1:05 pm

IAD

BOI

8h 05m1 stop

$227Delta

Sat, Mar 7 - Sat, Mar 14

11:22 am - 11:10 pm

GEG

IAD

8h 48m1 stop

7:00 am - 12:02 am

IAD

GEG

20h 02m1 stop

$227Delta

Fri, Feb 27 - Sun, Mar 8

10:39 am - 11:10 pm

BOI

IAD

10h 31m1 stop

2:15 pm - 11:59 pm

IAD

BOI

11h 44m2 stops

$232Delta

Wed, Jan 28 - Fri, Feb 6

5:05 am - 7:09 pm

GEG

IAD

11h 04m2 stops

7:30 am - 12:37 pm

IAD

GEG

8h 07m1 stop

$232Delta

Fri, Feb 6 - Sun, Feb 8

10:39 am - 11:06 pm

BOI

IAD

10h 27m2 stops

12:23 pm - 11:59 pm

IAD

BOI

13h 36m2 stops

$238Delta

Wed, Jan 28 - Fri, Feb 6

5:55 pm - 4:26 pm

BOI

IAD

20h 31m1 stop

6:04 pm - 12:51 pm

IAD

BOI

20h 47m1 stop

$251Alaska Airlines

Tue, Jan 20 - Fri, Jan 23

7:00 am - 4:35 pm

SUN

IAD

7h 35m1 stop

4:11 pm - 9:29 pm

IAD

SUN

7h 18m1 stop

$379United Airlines

Wed, Jan 14 - Sat, Jan 17

10:40 am - 9:07 pm

JAC

IAD

8h 27m1 stop

6:00 am - 12:58 pm

IAD

JAC

8h 58m1 stop

$401United Airlines

Thu, Jan 15 - Mon, Jan 19

1:45 pm - 10:19 pm

IDA

IAD

6h 34m1 stop

7:03 am - 12:15 pm

IAD

IDA

7h 12m1 stop

$447American Airlines

Sat, May 16 - Wed, May 27

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

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

Delta

Mar 7

BOI10:41 amBoise Air Term. Gowen Fld

10h 29m

1 stop

IAD11:10 pmWashington, D.C. Dulles Intl

Mar 14

IAD7:00 amWashington, D.C. Dulles Intl

8h 05m

1 stop

BOI1:05 pmBoise Air Term. Gowen Fld

$227

Find similar

Delta

Jan 28

BOI10:39 amBoise Air Term. Gowen Fld

10h 31m

1 stop

IAD11:10 pmWashington, D.C. Dulles Intl

Feb 6

IAD2:15 pmWashington, D.C. Dulles Intl

11h 44m

2 stops

BOI11:59 pmBoise Air Term. Gowen Fld

$232

Find similar

Delta

Jan 28

BOI10:39 amBoise Air Term. Gowen Fld

10h 27m

2 stops

IAD11:06 pmWashington, D.C. Dulles Intl

Feb 6

IAD12:23 pmWashington, D.C. Dulles Intl

13h 36m

2 stops

BOI11:59 pmBoise Air Term. Gowen Fld

$238

Find similar

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

Feb 14

BOI6:41 amBoise Air Term. Gowen Fld

14h 07m

2 stops

IAD10:48 pmWashington, D.C. Dulles Intl

Feb 21

IAD6:00 amWashington, D.C. Dulles Intl

8h 46m

1 stop

BOI12:46 pmBoise Air Term. Gowen Fld

$337

Find similar

American Airlines

Feb 14

BOI6:41 amBoise Air Term. Gowen Fld

14h 07m

2 stops

IAD10:48 pmWashington, D.C. Dulles Intl

Feb 21

IAD9:11 amWashington, D.C. Dulles Intl

13h 08m

2 stops

BOI8:19 pmBoise Air Term. Gowen Fld

$362

Find similar

American Airlines

Feb 23

GEG5:51 amSpokane

7h 40m

1 stop

IAD4:31 pmWashington, D.C. Dulles Intl

Feb 28

IAD9:11 amWashington, D.C. Dulles Intl

11h 42m

2 stops

GEG5:53 pmSpokane

$366

Find similar

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

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 1/28

11:35 am-4:26 pm

1 stop26h 51m

Washington, D.C. Dulles Intl

Wed 2/4

6:04 pm-3:10 pm

1 stop23h 06m

$226

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 3/7

10:41 am-11:10 pm

1 stop10h 29m

Washington, D.C. Dulles Intl

Sat 3/14

7:00 am-1:05 pm

1 stop8h 05m

$227

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Fri 2/27

11:22 am-11:10 pm

1 stop8h 48m

Washington, D.C. Dulles Intl

Sun 3/8

7:00 am-12:02 am

1 stop20h 02m

$227

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 1/28

10:39 am-11:10 pm

1 stop10h 31m

Washington, D.C. Dulles Intl

Fri 2/6

2:15 pm-11:59 pm

2 stops11h 44m

$232

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Fri 2/6

5:05 am-7:09 pm

2 stops11h 04m

Washington, D.C. Dulles Intl

Sun 2/8

7:30 am-12:37 pm

1 stop8h 07m

$232

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 1/28

10:39 am-11:06 pm

2 stops10h 27m

Washington, D.C. Dulles Intl

Fri 2/6

12:23 pm-11:59 pm

2 stops13h 36m

$238

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 1/20

5:55 pm-4:26 pm

1 stop20h 31m

Washington, D.C. Dulles Intl

Fri 1/23

6:04 pm-12:51 pm

1 stop20h 47m

$251

HaileyWashington, D.C.

SUN - IAD

SUNIAD

Hailey Sun Valley-Friedman

Wed 1/14

7:00 am-4:35 pm

1 stop7h 35m

Washington, D.C. Dulles Intl

Sat 1/17

4:11 pm-9:29 pm

1 stop7h 18m

$379

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

Thu 1/15

10:40 am-9:07 pm

1 stop8h 27m

Washington, D.C. Dulles Intl

Mon 1/19

6:00 am-12:58 pm

1 stop8h 58m

$401

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 5/16

1:45 pm-10:19 pm

1 stop6h 34m

Washington, D.C. Dulles Intl

Wed 5/27

7:03 am-12:15 pm

1 stop7h 12m

$447

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, February 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 $318. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of February, then flying in April is also cheap. Prices for this month can be found on momondo for an average of $365.

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Our data shows that Saturday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $482. When flying out on a Monday, the most expensive travel day of the week, you can expect to see flight prices from Idaho to Washington, D.C. Dulles Intl Airport for around $648.

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

Flying to Washington, D.C. Dulles Intl Airport from Idaho in the evening is the least expensive time of day to depart. momondo users have found prices as low as $466 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $537 on average. Flights to Washington, D.C. Dulles Intl Airport from Idaho in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

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

Fastest flight time	5h 55m
Direct flights	Sun

The fastest flight from Idaho to Washington, D.C. Dulles Intl Airport takes 5h 55m

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

Search flight deals

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 December 2025.
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
Alaska Airlines	PriceFrom $141	Free Cancellation	Rating 8.0 11,507 reviews	Search Alaska Airlines flights
Delta	PriceFrom $290	Free Cancellation	Rating 7.9 8,014 reviews	Search Delta flights
United Airlines	PriceFrom $300	Free Cancellation	Rating 7.4 9,104 reviews	Search United Airlines flights
Southwest	PriceFrom $379	Free Cancellation	Rating 8.0 4,253 reviews	Search Southwest flights

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Woodbridge

Waldorf

Tysons

Laurel

Colonial Beach

Silver Spring

Fredericksburg

Towson

Harpers Ferry

Rockville

Gaithersburg

Reston

Manassas

Sterling

Fairfax

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 $128

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 1/8. 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. Dulles Intl Airport

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

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

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

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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?

What is the cheapest day to depart on your flight to Washington, D.C. Dulles Intl Airport?

What is the cheapest time of day to depart on your flight to Washington, D.C. Dulles Intl Airport?

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

Alaska Airlines, 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?

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

As of December 2025, there are 7 flights per week flying from Idaho to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Mon, with 14% of flights taking off on this day.

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

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

Fastest flight time

Direct flights

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

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

How old do you have to be to fly 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?

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?

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. Dulles Intl Airport 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 Washington, D.C.

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