Dulles Intl

$135+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
May 4 — May 111
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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 April 29, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$279
(Alaska Airlines)

One-way from

$135
(Alaska Airlines)

Popular in

March

Cheapest in

February

Average price

$374
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Washington, D.C. (WAS) flight deals.
Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Washington, D.C. (WAS) flights.
From Idaho to Washington, D.C. Dulles Intl
One-way flight from Idaho to Washington, D.C. Dulles Intl
High demand for flights, 7% potential price rise
Cheapest flight prices on average. 1% potential price decrease ($10 potential savings vs. average RT price).
Average for round-trip flights in April 2025

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 April 29, 2025.

This Alaska Airlines deal was found by Cheapflights users on 4/28. 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.
Sat 8/96:00 pmBOI - IAD
1 stop10h 50mAlaska Airlines
Sat 8/166:30 amIAD - BOI
1 stop10h 34mAlaska Airlines
Deal found 4/28$279
This Hawaiian Airlines deal was found by Cheapflights users on 4/28. 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 5/211:40 pmGEG - IAD
1 stop7h 19mHawaiian Airlines
Sun 5/256:30 amIAD - GEG
1 stop9h 15mHawaiian Airlines
Deal found 4/28$296
This American Airlines deal was found by Cheapflights users on 4/27. 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 6/116:00 amGEG - IAD
1 stop8h 35mAmerican Airlines
Tue 6/176:27 amIAD - GEG
1 stop8h 18mAmerican Airlines
Deal found 4/27$297
This Delta deal was found by Cheapflights users on 4/28. 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.
Thu 8/710:24 amBOI - IAD
1 stop6h 00mDelta
Thu 8/146:40 pmIAD - BOI
1 stop6h 49mDelta
Deal found 4/28$301
This Delta deal was found by Cheapflights users on 4/28. 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 5/215:40 pmGEG - IAD
1 stop9h 12mDelta
Sun 5/256:00 amIAD - GEG
2 stops9h 46mDelta
Deal found 4/28$302
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Tue 5/277:07 pmBOI - IAD
1 stop8h 01mUnited Airlines
Tue 6/33:44 pmIAD - BOI
1 stop7h 42mUnited Airlines
Deal found 4/29$317
This American Airlines deal was found by Cheapflights users on 4/28. 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 6/1111:46 amBOI - IAD
1 stop8h 53mAmerican Airlines
Wed 6/186:27 amIAD - BOI
1 stop10h 18mAmerican Airlines
Deal found 4/28$336
This American Airlines deal was found by Cheapflights users on 4/28. 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 9/247:00 amJAC - IAD
1 stop7h 18mAmerican Airlines
Sun 9/285:08 amIAD - JAC
1 stop7h 57mAmerican Airlines
Deal found 4/28$343
This Vliegwinkel deal was found by Cheapflights users on 4/29. 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 Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/246:00 amIDA - IAD
1 stop9h 15mHawaiian Airlines
Sat 5/317:00 amIAD - IDA
1 stop10h 40mHawaiian Airlines
Deal found 4/29$344
This Orbitz deal was found by Cheapflights users on 4/28. 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 Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/288:46 pmBOI - IAD
1 stop8h 41mMultiple Airlines
Thu 7/3112:40 pmIAD - BOI
1 stop7h 16mMultiple Airlines
Deal found 4/28$349
This Hawaiian Airlines deal was found by Cheapflights users on 4/28. 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.
Mon 7/288:46 pmBOI - IAD
1 stop8h 41mHawaiian Airlines
Thu 7/318:10 amIAD - BOI
1 stop10h 54mHawaiian Airlines
Deal found 4/28$350
This Alaska Airlines deal was found by Cheapflights users on 4/28. 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.
Sun 5/185:49 pmGEG - IAD
1 stop10h 47mAlaska Airlines
Sat 5/247:59 pmIAD - GEG
2 stops17h 54mAlaska Airlines
Deal found 4/28$355

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 April 29, 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

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 8/9

6:00 pm-6:50 am

1 stop10h 50m

Washington, D.C. Dulles Intl

Sat 8/16

6:30 am-3:04 pm

1 stop10h 34m

$279

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 5/21

1:40 pm-11:59 pm

1 stop7h 19m

Washington, D.C. Dulles Intl

Sun 5/25

6:30 am-12:45 pm

1 stop9h 15m

$296

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 6/11

6:00 am-5:35 pm

1 stop8h 35m

Washington, D.C. Dulles Intl

Tue 6/17

6:27 am-11:45 am

1 stop8h 18m

$297

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 8/7

10:24 am-6:24 pm

1 stop6h 00m

Washington, D.C. Dulles Intl

Thu 8/14

6:40 pm-11:29 pm

1 stop6h 49m

$301

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Wed 5/21

5:40 pm-5:52 am

1 stop9h 12m

Washington, D.C. Dulles Intl

Sun 5/25

6:00 am-12:46 pm

2 stops9h 46m

$302

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 5/27

7:07 pm-5:08 am

1 stop8h 01m

Washington, D.C. Dulles Intl

Tue 6/3

3:44 pm-9:26 pm

1 stop7h 42m

$317

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Wed 6/11

11:46 am-10:39 pm

1 stop8h 53m

Washington, D.C. Dulles Intl

Wed 6/18

6:27 am-2:45 pm

1 stop10h 18m

$336

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

Wed 9/24

7:00 am-4:18 pm

1 stop7h 18m

Washington, D.C. Dulles Intl

Sun 9/28

5:08 am-11:05 am

1 stop7h 57m

$343

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

Sat 5/24

6:00 am-5:15 pm

1 stop9h 15m

Washington, D.C. Dulles Intl

Sat 5/31

7:00 am-3:40 pm

1 stop10h 40m

$344

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Mon 7/28

8:46 pm-7:27 am

1 stop8h 41m

Washington, D.C. Dulles Intl

Thu 7/31

12:40 pm-5:56 pm

1 stop7h 16m

$349

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 54 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 June is currently the most expensive (average of $373). 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 April 29, 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 April 29, 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.

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
8.0
Very good

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Entertainment

7.1

Boarding

8.2

Overall

8.0

Crew

8.5

Food

7.1

Comfort

7.9

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?

    $135 is the cheapest one-way deal found within the past few days, from Alaska Airlines. You may also be able to find cheap deals on Hawaiian Airlines and United Airlines, with prices starting from $148 and $149, respectively.

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

  • 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 June is currently the most expensive (average of $373). 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
Alexandria
Arlington
Woodbridge
Tysons
Fairfax
Springfield
Rockville
Fredericksburg
Silver Spring
Gaithersburg
Linthicum Heights
Falls Church
Laurel
Easton
Towson
Herndon
Sterling
Bowie
National Harbor
Oxon Hill

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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.

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 April 29, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$141Average$409FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$300Average$595FlexibilityNo cancel feeOn-time69%
DeltaCheapest$306Average$461FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$346Average$438FlexibilityNo cancel feeOn-time63%

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