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Dulles Intl

$112+ 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 9/25. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
ago. 5 — ago. 121
mar. 8/5
mar. 8/12
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 julio 31, 2025.

Round-trip from

$217
(American Airlines)

One-way from

$112
(American Airlines)

Popular in

March

Cheapest in

August

Average price

$471
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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Highest demand for flights based on searches. 1% potential increase in price ($7 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in July 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 julio 31, 2025.

This American Airlines deal was found by Cheapflights users on 7/30. 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.
jue. 9/257:44 amJAC - IAD
1 stop7h 06mAmerican Airlines
lun. 9/296:25 amIAD - JAC
1 stop10h 12mAmerican Airlines
Deal found 7/30$217
This Delta deal was found by Cheapflights users on 7/31. 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.
mié. 10/291:00 pmJAC - IAD
1 stop8h 33mDelta
mié. 11/127:20 amIAD - JAC
1 stop6h 57mDelta
Deal found 7/31$257
This United Airlines deal was found by Cheapflights users on 7/31. 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.
sáb. 12/202:30 pmJAC - IAD
Nonstop4h 15mUnited Airlines
sáb. 1/39:00 amIAD - JAC
Nonstop4h 40mUnited Airlines
Deal found 7/31$269
This SmartFares deal was found by Cheapflights users on 7/29. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/126:35 amBOI - IAD
1 stop8h 34mAlaska Airlines
vie. 9/196:09 pmIAD - BOI
1 stop7h 59mAlaska Airlines
Deal found 7/29$287
This Hawaiian Airlines deal was found by Cheapflights users on 7/29. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 9/121:40 pmGEG - IAD
1 stop7h 43mHawaiian Airlines
lun. 9/156:09 pmIAD - GEG
1 stop9h 10mHawaiian Airlines
Deal found 7/29$296
This Delta deal was found by Cheapflights users on 7/29. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/222:21 pmGEG - IAD
1 stop6h 19mDelta
lun. 8/257:35 amIAD - GEG
1 stop10h 10mDelta
Deal found 7/29$297
This Hawaiian Airlines deal was found by Cheapflights users on 7/31. 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.
mié. 8/278:46 pmBOI - IAD
1 stop8h 46mHawaiian Airlines
dom. 8/317:00 amIAD - BOI
1 stop10h 54mHawaiian Airlines
Deal found 7/31$300
This Delta deal was found by Cheapflights users on 7/31. 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.
jue. 10/27:45 pmBOI - IAD
1 stop8h 16mDelta
mié. 10/157:35 amIAD - BOI
1 stop10h 31mDelta
Deal found 7/31$301
This Southwest deal was found by Cheapflights users on 7/30. 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.
dom. 8/246:05 amBOI - IAD
1 stop10h 30mSouthwest
jue. 9/47:35 amIAD - BOI
1 stop11h 25mSouthwest
Deal found 7/30$312
This United Airlines deal was found by Cheapflights users on 7/29. 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.
vie. 9/125:15 amGEG - IAD
1 stop7h 19mUnited Airlines
lun. 9/156:35 amIAD - GEG
1 stop7h 52mUnited Airlines
Deal found 7/29$317
This American Airlines deal was found by Cheapflights users on 7/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/226:00 amGEG - IAD
1 stop10h 00mAmerican Airlines
lun. 8/256:27 amIAD - GEG
1 stop8h 12mAmerican Airlines
Deal found 7/29$319
This American Airlines deal was found by Cheapflights users on 7/31. 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.
jue. 11/61:29 pmBOI - IAD
1 stop7h 03mAmerican Airlines
dom. 11/96:04 amIAD - BOI
1 stop8h 34mAmerican Airlines
Deal found 7/31$330

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 julio 31, 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

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

jue. 9/25

7:44 am-4:50 pm

1 stop7h 06m

Washington, D.C. Dulles Intl

lun. 9/29

6:25 am-2:37 pm

1 stop10h 12m

$217

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

mié. 10/29

1:00 pm-11:33 pm

1 stop8h 33m

Washington, D.C. Dulles Intl

mié. 11/12

7:20 am-12:17 pm

1 stop6h 57m

$257

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

sáb. 12/20

2:30 pm-8:45 pm

Nonstop4h 15m

Washington, D.C. Dulles Intl

sáb. 1/3

9:00 am-11:40 am

Nonstop4h 40m

$269

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

vie. 9/12

6:35 am-5:09 pm

1 stop8h 34m

Washington, D.C. Dulles Intl

vie. 9/19

6:09 pm-12:08 am

1 stop7h 59m

$287

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

vie. 9/12

1:40 pm-12:23 am

1 stop7h 43m

Washington, D.C. Dulles Intl

lun. 9/15

6:09 pm-12:19 am

1 stop9h 10m

$296

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

vie. 8/22

2:21 pm-11:40 pm

1 stop6h 19m

Washington, D.C. Dulles Intl

lun. 8/25

7:35 am-12:41 pm

1 stop8h 06m

$297

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

mié. 8/27

8:46 pm-7:32 am

1 stop8h 46m

Washington, D.C. Dulles Intl

dom. 8/31

7:00 am-3:54 pm

1 stop10h 54m

$300

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

jue. 10/2

7:45 pm-6:01 am

1 stop8h 16m

Washington, D.C. Dulles Intl

mié. 10/15

7:35 am-4:06 pm

1 stop10h 31m

$301

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

dom. 8/24

6:05 am-6:35 pm

1 stop10h 30m

Washington, D.C. Dulles Intl

jue. 9/4

7:35 am-5:00 pm

1 stop11h 25m

$312

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

vie. 9/12

5:15 am-3:34 pm

1 stop7h 19m

Washington, D.C. Dulles Intl

lun. 9/15

6:35 am-11:27 am

1 stop7h 52m

$317

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/30

Showing 1-10 of 51 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, July is the cheapest month in which you can book a flight from Idaho to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Idaho to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 julio 31, 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.

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 julio 31, 2025.
Read through reviews of airlines operating flights from Idaho to Washington, D.C. Dulles Intl Airport, such as Alaska Airlines, Southwest, and Delta. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,246 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,981 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,900 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Comfort

7.8

Boarding

8.1

Crew

8.5

Entertainment

7.1

Overall

8.0

Food

7.1

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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?

    $112 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and Hawaiian Airlines, with prices starting from $134 and $148, 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 Spokane - Washington, D.C. Dulles Intl, Boise Air Term. Gowen Fld - 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, July is the cheapest month in which you can book a flight from Idaho to Washington, D.C. Dulles Intl Airport (average of $306). Flying from Idaho to Washington, D.C. Dulles Intl Airport in April is currently the most expensive (average of $337). 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 Washington, D.C. Dulles Intl Airport?

Book flights to Washington, D.C. Dulles Intl Airport if you plan to visit one of these locations
Woodbridge
Arlington
Alexandria
Tysons
Silver Spring
Fredericksburg
Gaithersburg
Towson
Linthicum Heights
Easton
Fairfax
Manassas
Falls Church
Waldorf
Laurel
Rockville
Oxon Hill
National Harbor
Dundalk
Bowie

Browse thousands of different options on Cheapflights for your next trip

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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.
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Minneapolis to Reagan-National flights
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Oakland to Baltimore flights
Newark to Reagan-National flights
Orlando to Reagan-National flights
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Austin to Reagan-National flights
LaGuardia to Reagan-National 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 julio 31, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$141Average$370FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$300Average$601FlexibilityNo cancel feeOn-time69%
DeltaCheapest$300Average$451FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$346Average$478FlexibilityNo cancel feeOn-time63%

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