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 Idaho Falls and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 6h 02m 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 06m. 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, Alaska Airlines, 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, 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 63% 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 November 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.

$116 Cheap Flights from Idaho to Washington, D.C. Dulles Intl Airport in 2025/26

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One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

5:51 am - 4:36 pmGEG-IAD

7h 45m1 stop

7:34 am - 9:28 pmIAD-GEG

16h 54m1 stop

$266Alaska Airlines

Find Deal

Sat, Dec 6 - Sat, Dec 13

11:19 am - 11:27 pmGEG-IAD

9h 08m1 stop

7:15 am - 10:49 pmIAD-GEG

18h 34m1 stop

$267Delta

Find Deal

Sat, Dec 6 - Thu, Dec 11

8:26 pm - 6:06 amBOI-IAD

7h 40m1 stop

7:34 am - 3:26 pmIAD-BOI

9h 52m1 stop

$285Hawaiian Airlines

Find Deal

Thu, Dec 4 - Wed, Dec 10

5:40 am - 5:20 pmGEG-IAD

8h 40m1 stop

7:05 am - 12:29 pmIAD-GEG

8h 24m1 stop

$316Hawaiian Airlines

Find Deal

Tue, Mar 3 - Wed, Mar 4

6:05 am - 5:25 pmGEG-IAD

8h 20m1 stop

5:21 pm - 10:05 pmIAD-GEG

7h 44m1 stop

$352United Airlines

Find Deal

Thu, Mar 5 - Tue, Mar 10

2:40 pm - 11:22 pmJAC-IAD

6h 42m1 stop

6:00 am - 12:58 pmIAD-JAC

8h 58m1 stop

$360United Airlines

Find Deal

Fri, Jan 16 - Mon, Jan 19

5:51 am - 5:02 pmGEG-IAD

8h 11m1 stop

2:01 pm - 11:01 pmIAD-GEG

12h 00m2 stops

$388American Airlines

Find Deal

Thu, Mar 5 - Tue, Mar 10

6:05 am - 9:55 pmBOI-IAD

13h 50m2 stops

7:00 am - 8:20 pmIAD-BOI

15h 20m2 stops

$401Southwest

Find Deal

Thu, Jan 22 - Sat, Jan 24

6:45 am - 12:15 amGEG-IAD

14h 30m2 stops

4:45 pm - 12:10 amIAD-GEG

10h 25m2 stops

$418Southwest

Find Deal

Thu, Mar 5 - Tue, Mar 10

7:20 am - 9:17 pmIDA-IAD

11h 57m2 stops

1:08 pm - 10:36 pmIAD-IDA

11h 28m2 stops

$444American Airlines

Find Deal

Wed, Jan 7 - Thu, Jan 15

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

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

Alaska Airlines

Dec 6

GEG5:51 amSpokane

7h 45m

1 stop

IAD4:36 pmWashington, D.C. Dulles Intl

Dec 13

IAD7:34 amWashington, D.C. Dulles Intl

16h 54m

1 stop

GEG9:28 pmSpokane

$266

Find similar

Alaska Airlines

Dec 24

BOI10:47 amBoise Air Term. Gowen Fld

17h 26m

1 stop

IAD6:13 amWashington, D.C. Dulles Intl

Jan 6

IAD7:33 amWashington, D.C. Dulles Intl

9h 49m

1 stop

BOI3:22 pmBoise Air Term. Gowen Fld

$287

Find similar

Alaska Airlines

Dec 7

GEG5:51 amSpokane

21h 15m

1 stop

IAD6:06 amWashington, D.C. Dulles Intl

Dec 14

IAD7:34 amWashington, D.C. Dulles Intl

28h 18m

1 stop

GEG8:52 amSpokane

$295

Find similar

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

Dec 6

GEG11:19 amSpokane

9h 08m

1 stop

IAD11:27 pmWashington, D.C. Dulles Intl

Dec 11

IAD7:15 amWashington, D.C. Dulles Intl

18h 34m

1 stop

GEG10:49 pmSpokane

$267

Find similar

Delta

Dec 6

GEG1:10 pmSpokane

7h 17m

1 stop

IAD11:27 pmWashington, D.C. Dulles Intl

Dec 13

IAD3:00 pmWashington, D.C. Dulles Intl

10h 49m

2 stops

GEG10:49 pmSpokane

$272

Find similar

Delta

Dec 4

GEG1:10 pmSpokane

7h 17m

1 stop

IAD11:27 pmWashington, D.C. Dulles Intl

Dec 7

IAD7:15 amWashington, D.C. Dulles Intl

10h 40m

1 stop

GEG2:55 pmSpokane

$277

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

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sat 12/6

5:51 am-4:36 pm

1 stop7h 45m

Washington, D.C. Dulles Intl

Sat 12/13

7:34 am-9:28 pm

1 stop16h 54m

$266

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sat 12/6

11:19 am-11:27 pm

1 stop9h 08m

Washington, D.C. Dulles Intl

Thu 12/11

7:15 am-10:49 pm

1 stop18h 34m

$267

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 12/4

8:26 pm-6:06 am

1 stop7h 40m

Washington, D.C. Dulles Intl

Wed 12/10

7:34 am-3:26 pm

1 stop9h 52m

$285

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Tue 3/3

5:40 am-5:20 pm

1 stop8h 40m

Washington, D.C. Dulles Intl

Wed 3/4

7:05 am-12:29 pm

1 stop8h 24m

$316

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Thu 3/5

6:05 am-5:25 pm

1 stop8h 20m

Washington, D.C. Dulles Intl

Tue 3/10

5:21 pm-10:05 pm

1 stop7h 44m

$352

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

Fri 1/16

2:40 pm-11:22 pm

1 stop6h 42m

Washington, D.C. Dulles Intl

Mon 1/19

6:00 am-12:58 pm

1 stop8h 58m

$360

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Thu 3/5

5:51 am-5:02 pm

1 stop8h 11m

Washington, D.C. Dulles Intl

Tue 3/10

2:01 pm-11:01 pm

2 stops12h 00m

$388

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 1/22

6:05 am-9:55 pm

2 stops13h 50m

Washington, D.C. Dulles Intl

Sat 1/24

7:00 am-8:20 pm

2 stops15h 20m

$401

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Thu 3/5

6:45 am-12:15 am

2 stops14h 30m

Washington, D.C. Dulles Intl

Tue 3/10

4:45 pm-12:10 am

2 stops10h 25m

$418

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Wed 1/7

7:20 am-9:17 pm

2 stops11h 57m

Washington, D.C. Dulles Intl

Thu 1/15

1:08 pm-10:36 pm

2 stops11h 28m

$444

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	4h 15m
Direct flights	Sun

The fastest flight from Idaho to Washington, D.C. Dulles Intl Airport takes 4h 15m

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 November 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 11,260 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 9,011 reviews	Search United Airlines flights
Delta	PriceFrom $290	Free Cancellation	Rating 7.9 8,003 reviews	Search Delta flights
Southwest	PriceFrom $389	Free Cancellation	Rating 8.0 4,236 reviews	Search Southwest flights

Alexandria

National Harbor

Gettysburg

Arlington

Winchester

Woodbridge

Waldorf

Tysons

Laurel

Colonial Beach

Silver Spring

Fredericksburg

Harpers Ferry

Towson

Rockville

Reston

Manassas

Gaithersburg

Fairfax

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.

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

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Cheap flights from Idaho to Washington, D.C. from $116

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 2/22. 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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Find the cheapest flights from Idaho to Washington, D.C.

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

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

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

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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

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?

Frontier, Alaska Airlines, 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 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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