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

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

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 Hailey and flying into Washington, D.C. Dulles Intl Airport (one of the most popular routes), then the duration is 6h 14m 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 28m. Keep in mind that layovers or delays could extend your travel time.

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

As of July 2026, 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.

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 55% 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 July 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.

$99 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.

2:11 pm - 12:40 am

BOI

IAD

8h 29m

1 stop

6:20 am - 1:29 pm

IAD

BOI

9h 09m

1 stop

$197Delta

Sat, Sep 19 - Sat, Sep 26

10:45 pm - 9:11 am

GEG

IAD

7h 26m

1 stop

7:00 am - 11:38 am

IAD

GEG

7h 38m

1 stop

$203Delta

Tue, Dec 1 - Tue, Dec 8

5:00 am - 1:30 pm

BOI

IAD

6h 30m

1 stop

5:27 pm - 10:33 pm

IAD

BOI

7h 06m

1 stop

$243United Airlines

Sat, Sep 19 - Sat, Sep 26

6:44 am - 6:27 pm

BOI

IAD

9h 43m

1 stop

6:09 am - 11:16 am

IAD

BOI

7h 07m

1 stop

$268American Airlines

Wed, Aug 19 - Sun, Aug 23

1:45 pm - 11:13 pm

GEG

IAD

6h 28m

1 stop

4:10 pm - 11:38 pm

IAD

GEG

10h 28m

1 stop

$276United Airlines

Wed, Dec 2 - Wed, Dec 9

6:44 am - 6:27 pm

BOI

IAD

9h 43m

1 stop

6:09 am - 11:16 am

IAD

BOI

7h 07m

1 stop

$321American Airlines

Sat, Aug 15 - Tue, Aug 18

10:47 pm - 10:16 am

IDA

IAD

33h 29m

2 stops

9:50 am - 4:05 pm

IAD

IDA

8h 15m

1 stop

$339Multiple Airlines

Mon, Aug 3 - Mon, Aug 10

9:48 am - 6:04 pm

IDA

IAD

30h 16m

2 stops

9:50 am - 4:05 pm

IAD

IDA

8h 15m

1 stop

$435Multiple Airlines

Thu, Aug 13 - Mon, Aug 17

11:53 am - 11:59 pm

SUN

IAD

10h 06m

1 stop

5:33 pm - 11:11 am

IAD

SUN

19h 38m

1 stop

$474Alaska Airlines

Wed, Oct 14 - Fri, Oct 16

12:02 pm - 11:59 pm

JAC

IAD

9h 57m

1 stop

7:00 am - 11:22 am

IAD

JAC

30h 22m

1 stop

$571Alaska Airlines

Thu, Sep 24 - Sun, Sep 27

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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

Alaska Airlines

Dec 5

GEG1:23 pmSpokane

7h 36m

1 stop

IAD11:59 pmWashington, D.C. Dulles Intl

Dec 12

IAD5:25 pmWashington, D.C. Dulles Intl

9h 22m

1 stop

GEG11:47 pmSpokane

$335

Alaska Airlines

Dec 4

GEG7:00 amSpokane

9h 01m

1 stop

IAD7:01 pmWashington, D.C. Dulles Intl

Dec 9

IAD7:00 amWashington, D.C. Dulles Intl

8h 30m

1 stop

GEG12:30 pmSpokane

$337

Alaska Airlines

Aug 26

GEG11:45 amSpokane

9h 14m

1 stop

IAD11:59 pmWashington, D.C. Dulles Intl

Aug 29

IAD5:47 pmWashington, D.C. Dulles Intl

7h 38m

1 stop

GEG10:25 pmSpokane

$359

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

Aug 19

BOI6:44 amBoise Air Term. Gowen Fld

9h 43m

1 stop

IAD6:27 pmWashington, D.C. Dulles Intl

Aug 23

IAD6:09 amWashington, D.C. Dulles Intl

7h 07m

1 stop

BOI11:16 amBoise Air Term. Gowen Fld

$268

American Airlines

Aug 28

GEG5:40 amSpokane

9h 47m

1 stop

IAD6:27 pmWashington, D.C. Dulles Intl

Sep 2

IAD2:53 pmWashington, D.C. Dulles Intl

8h 49m

1 stop

GEG8:42 pmSpokane

$316

American Airlines

Aug 15

BOI6:44 amBoise Air Term. Gowen Fld

9h 43m

1 stop

IAD6:27 pmWashington, D.C. Dulles Intl

Aug 18

IAD6:09 amWashington, D.C. Dulles Intl

7h 07m

1 stop

BOI11:16 amBoise Air Term. Gowen Fld

$321

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 - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 9/19

2:11 pm-12:40 am

1 stop8h 29m

Washington, D.C. Dulles Intl

Sat 9/26

6:20 am-1:29 pm

1 stop9h 09m

$197

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Tue 12/1

10:45 pm-9:11 am

1 stop7h 26m

Washington, D.C. Dulles Intl

Tue 12/8

7:00 am-11:38 am

1 stop7h 38m

$203

Quickest round-trip

BoiseWashington, D.C.

BOI - IAD

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

5:27 pm-10:33 pm

1 stop7h 06m

$243

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 8/19

6:44 am-6:27 pm

1 stop9h 43m

Washington, D.C. Dulles Intl

Sun 8/23

6:09 am-11:16 am

1 stop7h 07m

$268

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 12/2

1:45 pm-11:13 pm

1 stop6h 28m

Washington, D.C. Dulles Intl

Wed 12/9

4:10 pm-11:38 pm

1 stop10h 28m

$276

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 8/15

6:44 am-6:27 pm

1 stop9h 43m

Washington, D.C. Dulles Intl

Tue 8/18

6:09 am-11:16 am

1 stop7h 07m

$321

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Mon 8/3

10:47 pm-10:16 am

2 stops33h 29m

Washington, D.C. Dulles Intl

Mon 8/10

9:50 am-4:05 pm

1 stop8h 15m

$339

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Thu 8/13

9:48 am-6:04 pm

2 stops30h 16m

Washington, D.C. Dulles Intl

Mon 8/17

9:50 am-4:05 pm

1 stop8h 15m

$435

HaileyWashington, D.C.

SUN - IAD

SUNIAD

Hailey Sun Valley-Friedman

Wed 10/14

11:53 am-11:59 pm

1 stop10h 06m

Washington, D.C. Dulles Intl

Fri 10/16

5:33 pm-11:11 am

1 stop19h 38m

$474

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

Thu 9/24

12:02 pm-11:59 pm

1 stop9h 57m

Washington, D.C. Dulles Intl

Sun 9/27

7:00 am-11:22 am

1 stop30h 22m

$571

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 $151. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of May, then flying in November is also cheap. Prices for this month can be found on momondo for an average of $207.

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

You could potentially save up to 58% 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

Fastest flight time	6h 07m
Direct flights	None

The fastest flight from Idaho to Washington, D.C. Dulles Intl Airport takes 6h 07m

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 July 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 $232	Free Cancellation	Rating 7.8 8,456 reviews	Search Delta flights
Alaska Airlines	PriceFrom $245	Free Cancellation	Rating 7.9 12,646 reviews	Search Alaska Airlines flights
United Airlines	PriceFrom $278	Free Cancellation	Rating 7.4 9,966 reviews	Search United Airlines flights
Southwest	PriceFrom $340	Free Cancellation	Rating 7.9 4,249 reviews	Search Southwest flights

Alexandria

National Harbor

Arlington

Gettysburg

Winchester

Waldorf

Laurel

Woodbridge

Fredericksburg

Gaithersburg

Linthicum Heights

Rockville

Colonial Beach

Towson

Manassas

Silver Spring

Sterling

Tysons

Springfield

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 $99

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 8/29. 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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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

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

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

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

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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