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Dulles Intl

$100+ Cheap flights from Idaho to Dulles Intl (IAD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/25. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
Jun 22 — Jun 291
Sun 6/22
Sun 6/29
1 adult, Economy
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Cheap flight deals from Idaho to Dulles Intl

Keep the following information in mind while searching for Idaho to Dulles Intl flight deals. Data was last updated June 17, 2025.

Round-trip from

$199
(Delta)

One-way from

$100
(Delta)

Popular in

March

Cheapest in

February

Average price

$428
From Idaho to Washington, D.C. Dulles Intl
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One-way flight from Idaho to Washington, D.C. Dulles Intl
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High demand for flights, 1% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($13 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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Find flight deals from Idaho to Dulles Intl

Cheapest flights from Idaho to Dulles Intl
Explore the most affordable flight options available from Idaho to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 17, 2025.

This Delta deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/95:35 pmGEG - IAD
1 stop9h 22mDelta
Tue 7/157:30 amIAD - GEG
1 stop10h 26mDelta
Deal found 6/16$199
This Hawaiian Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/128:45 pmGEG - IAD
1 stop7h 47mHawaiian Airlines
Mon 9/157:00 amIAD - GEG
1 stop8h 43mHawaiian Airlines
Deal found 6/17$210
This United Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/86:25 pmGEG - IAD
1 stop7h 59mUnited Airlines
Sat 8/162:39 pmIAD - GEG
1 stop9h 24mUnited Airlines
Deal found 6/17$239
This Hawaiian Airlines deal was found by Cheapflights users on 6/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/277:17 pmBOI - IAD
1 stop10h 15mHawaiian Airlines
Sun 8/319:00 amIAD - BOI
1 stop10h 18mHawaiian Airlines
Deal found 6/14$284
This American Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/151:41 pmBOI - IAD
1 stop6h 41mAmerican Airlines
Wed 10/226:45 amIAD - BOI
1 stop7h 49mAmerican Airlines
Deal found 6/16$285
This Delta deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:45 pmBOI - IAD
1 stop8h 47mDelta
Sun 8/316:00 amIAD - BOI
2 stops10h 01mDelta
Deal found 6/15$290
This Alaska Airlines deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/164:47 pmGEG - IAD
1 stop11h 03mAlaska Airlines
Tue 7/226:30 amIAD - GEG
1 stop8h 58mAlaska Airlines
Deal found 6/16$302
This Sun Country Air deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Sun Country Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/136:29 pmGEG - IAD
1 stop14h 14mSun Country Air
Sun 7/206:00 amIAD - GEG
1 stop12h 47mSun Country Air
Deal found 6/15$315
This Alaska Airlines deal was found by Cheapflights users on 6/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/151:00 pmBOI - IAD
1 stop15h 50mAlaska Airlines
Tue 7/228:10 amIAD - BOI
1 stop10h 54mAlaska Airlines
Deal found 6/17$318
This Southwest deal was found by Cheapflights users on 6/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/15:35 amBOI - IAD
1 stop9h 40mSouthwest
Mon 8/47:50 pmIAD - BOI
1 stop6h 40mSouthwest
Deal found 6/16$344
This Southwest deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/66:25 amGEG - IAD
1 stop7h 45mSouthwest
Sun 11/97:50 pmIAD - GEG
1 stop7h 05mSouthwest
Deal found 6/15$357
This Mytrip deal was found by Cheapflights users on 6/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/136:29 pmGEG - IAD
1 stop14h 14mMultiple Airlines
Sun 7/2011:58 amIAD - GEG
3 stops32h 04mMultiple Airlines
Deal found 6/15$362

Cheapflights Fare Finder

Customize your flight search to find flights from Idaho to Dulles Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 17, 2025.
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

Idaho

Fly to

Dulles Intl

Route

Depart

Return

Price

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 7/9

5:35 pm-5:57 am

1 stop9h 22m

Washington, D.C. Dulles Intl

Tue 7/15

7:30 am-2:56 pm

1 stop10h 26m

$199

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Fri 9/12

8:45 pm-7:32 am

1 stop7h 47m

Washington, D.C. Dulles Intl

Mon 9/15

7:00 am-12:43 pm

1 stop8h 43m

$210

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Mon 8/11

4:47 pm-6:50 am

1 stop11h 03m

Washington, D.C. Dulles Intl

Mon 8/18

6:13 pm-10:56 pm

1 stop7h 43m

$224

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Fri 8/8

6:25 pm-5:24 am

1 stop7h 59m

Washington, D.C. Dulles Intl

Sat 8/16

2:39 pm-9:03 pm

1 stop9h 24m

$239

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 8/27

7:17 pm-7:32 am

1 stop10h 15m

Washington, D.C. Dulles Intl

Sun 8/31

9:00 am-5:18 pm

1 stop10h 18m

$284

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 10/15

1:41 pm-10:22 pm

1 stop6h 41m

Washington, D.C. Dulles Intl

Wed 10/22

6:45 am-12:34 pm

1 stop7h 49m

$285

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 8/27

12:45 pm-11:32 pm

1 stop8h 47m

Washington, D.C. Dulles Intl

Sun 8/31

6:00 am-2:01 pm

2 stops10h 01m

$290

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sun 7/13

6:29 pm-11:43 am

1 stop14h 14m

Washington, D.C. Dulles Intl

Sun 7/20

6:00 am-3:47 pm

1 stop12h 47m

$315

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 7/15

1:00 pm-6:50 am

1 stop15h 50m

Washington, D.C. Dulles Intl

Tue 7/22

8:10 am-5:04 pm

1 stop10h 54m

$318

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Fri 8/1

5:35 am-5:15 pm

1 stop9h 40m

Washington, D.C. Dulles Intl

Mon 8/4

7:50 pm-12:30 am

1 stop6h 40m

$344

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/16

Showing 1-10 of 57 results
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Best time to book a flight from Idaho to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Idaho with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Idaho to Washington, D.C. Dulles Intl Airport

What is the cheapest month to book a flight from Idaho to Washington, D.C. Dulles Intl Airport?

Currently, August is the cheapest month in which you can book a flight from Idaho to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Idaho to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $347). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from ID to IAD?

Find hourly flight availability from Idaho to Dulles Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 17, 2025.

When flying from Idaho to Washington, D.C. Dulles Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Rainfall in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Washington, D.C. Dulles Intl Airport ranges from 2.6 - 4.0 inches per month. May is typically the wettest month, when rainfall can reach 4.0 in. February is typically the driest time to visit Washington, D.C. Dulles Intl Airport when rainfall is around 2.6 in.

Temperature in Dulles Intl by month

Plan your trip to Dulles Intl by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Washington, D.C. Dulles Intl Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 35.6 F).

Reviews of airlines servicing Dulles Intl

Get insights into the airlines that provide service to Dulles Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Dulles Intl. Reviews last updated June 17, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest and Delta from Idaho to Washington, D.C. by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,279 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,965 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.8
Good
2,503 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,809 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Boarding

8.1

Crew

8.5

Entertainment

7.1

Food

7.1

Overall

8.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Idaho to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Idaho to Washington, D.C. Dulles Intl Airport one-way?

    $100 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on American Airlines and Hawaiian Airlines, with prices starting from $105 and $119, respectively.

  • What are the most popular routes from Idaho to Washington, D.C. Dulles Intl Airport?

    The most popular flight routes from Idaho to Washington, D.C. Dulles Intl Airport are Boise Air Term. Gowen Fld - Washington, D.C. Dulles Intl, Spokane - Washington, D.C. Dulles Intl and Jackson Hole - Washington, D.C. Dulles Intl.

  • Can I find deals for flights from Idaho to Dulles Intl that include hotel bookings?

    Yes. In addition to deals on Idaho to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Idaho to Dulles Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Idaho to Dulles Intl.

  • Can I find deals for business class flights from Idaho to Dulles Intl?

    Yes. Cheapflights offers flight deals from Idaho to Dulles Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Idaho to Washington, D.C. Dulles Intl Airport?

    Currently, August is the cheapest month in which you can book a flight from Idaho to Washington, D.C. Dulles Intl Airport (average of $309). Flying from Idaho to Washington, D.C. Dulles Intl Airport in July is currently the most expensive (average of $347). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Idaho?

Book flights to Idaho if you plan to visit one of these locations
Arlington
Woodbridge
Alexandria
Tysons
Silver Spring
Linthicum Heights
Fredericksburg
Fairfax
Gaithersburg
Easton
Towson
Manassas
Falls Church
Rockville
Springfield
National Harbor
Dundalk
Waldorf
Bowie
Hanover

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Alternative routes for Idaho to Dulles Intl

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Dulles Intl flights
Dallas/Fort Worth to Baltimore flights
Los Angeles to Reagan-National flights
Boston to Reagan-National flights
Dallas/Fort Worth to Reagan-National flights
Dallas/Fort Worth to Dulles Intl flights
Los Angeles to Baltimore flights
San Francisco to Dulles Intl flights
Atlanta to Dulles Intl flights
Boston to Baltimore flights
O'Hare Intl to Reagan-National flights
San Francisco to Reagan-National flights
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Atlanta to Baltimore flights
O'Hare Intl to Dulles Intl flights
Seattle to Reagan-National flights
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Seattle to Baltimore flights
San Francisco to Baltimore flights
Hobby to Reagan-National flights
Denver to Baltimore flights
Atlanta to Reagan-National flights
O'Hare Intl to Baltimore flights
Minneapolis to Reagan-National flights
Denver to Dulles Intl flights
George Bush Intcntl to Dulles Intl flights
Minneapolis to Dulles Intl flights
Fort Lauderdale to Baltimore flights
Miami to Reagan-National flights
San Diego to Dulles Intl flights
Orlando to Baltimore flights
Fort Lauderdale to Dulles Intl flights
Denver to Reagan-National flights
George Bush Intcntl to Baltimore flights
Minneapolis to Baltimore flights
Miami to Dulles Intl flights
George Bush Intcntl to Reagan-National flights
Orlando to Dulles Intl flights
Detroit to Dulles Intl flights
Charlotte to Dulles Intl flights
Orlando to Reagan-National flights
Ontario to Dulles Intl flights
Austin to Baltimore flights
San Diego to Reagan-National flights
Miami to Baltimore flights
Austin to Dulles Intl flights
Portland to Dulles Intl flights
Tampa to Dulles Intl flights

Top 4 airlines flying from Idaho to Dulles Intl

Discover the top 4 airlines that operate flights from Idaho to Dulles Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated June 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$141Average$370FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$300Average$601FlexibilityNo cancel feeOn-time69%
DeltaCheapest$300Average$438FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$346Average$484FlexibilityNo cancel feeOn-time63%

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