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Dulles Intl

$136+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
feb. 25 — mar. 41
mar. 2/25
mar. 3/4
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 febrero 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$231
(American Airlines)

One-way from

$136
(Alaska Airlines)

Popular in

March

Cheapest in

February

Average price

$361
Provider with most accurate pricing for Boise Air Term. Gowen Fld-Washington, D.C. (WAS) flight deals.
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Provider most trusted by Cheapflights users for Boise Air Term. Gowen Fld-Washington, D.C. (WAS) flights.
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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, 0% potential price rise
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Cheapest flight prices on average. 2% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in February 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 febrero 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/18. 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. 4/111:23 pmBOI - IAD
1 stop7h 19mAmerican Airlines
mar. 4/156:18 amIAD - BOI
1 stop8h 15mAmerican Airlines
Deal found 2/18$231
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
vie. 4/116:40 pmBOI - IAD
1 stop9h 00mAlaska Airlines
mié. 4/167:00 amIAD - BOI
1 stop8h 52mAlaska Airlines
Deal found 2/20$251
This Hawaiian Airlines deal was found by Cheapflights users on 2/20. 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. 4/116:40 pmBOI - IAD
1 stop9h 00mHawaiian Airlines
sáb. 4/197:00 amIAD - BOI
1 stop9h 55mHawaiian Airlines
Deal found 2/20$265
This United Airlines deal was found by Cheapflights users on 2/20. 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.
mar. 4/227:00 pmBOI - IAD
1 stop8h 15mUnited Airlines
mié. 4/235:30 pmIAD - BOI
1 stop7h 33mUnited Airlines
Deal found 2/20$278
This Alaska Airlines deal was found by Cheapflights users on 2/20. 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.
mié. 4/161:29 pmGEG - IAD
1 stop13h 05mAlaska Airlines
dom. 4/207:31 amIAD - GEG
1 stop18h 31mAlaska Airlines
Deal found 2/20$296
This Delta deal was found by Cheapflights users on 2/19. 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. 4/301:15 pmGEG - IAD
1 stop7h 16mDelta
lun. 5/57:25 amIAD - GEG
1 stop10h 28mDelta
Deal found 2/19$297
This United Airlines deal was found by Cheapflights users on 2/19. 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. 3/296:30 pmGEG - IAD
1 stop7h 46mUnited Airlines
mié. 4/28:15 amIAD - GEG
1 stop9h 21mUnited Airlines
Deal found 2/19$298
This Delta deal was found by Cheapflights users on 2/18. 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. 4/113:00 pmBOI - IAD
1 stop6h 25mDelta
mar. 4/155:19 pmIAD - BOI
2 stops8h 40mDelta
Deal found 2/18$300
This American Airlines deal was found by Cheapflights users on 2/19. 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.
mié. 3/55:34 amGEG - IAD
1 stop7h 38mAmerican Airlines
mar. 4/292:12 pmIAD - GEG
2 stops10h 26mAmerican Airlines
Deal found 2/19$346
This Delta deal was found by Cheapflights users on 2/20. 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.
sáb. 4/121:25 pmJAC - IAD
1 stop8h 25mDelta
sáb. 4/197:35 amIAD - JAC
1 stop6h 44mDelta
Deal found 2/20$347
This Southwest deal was found by Cheapflights users on 2/19. 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.
mié. 5/78:40 amBOI - IAD
2 stops11h 55mSouthwest
dom. 5/115:15 amIAD - BOI
1 stop6h 55mSouthwest
Deal found 2/19$375
This Trip.com deal was found by Cheapflights users on 2/19. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 3/216:40 pmBOI - IAD
1 stop9h 00mMultiple Airlines
vie. 3/286:18 amIAD - BOI
1 stop8h 28mMultiple Airlines
Deal found 2/19$408

Find flights from Idaho to Dulles Intl within your budget

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 febrero 20, 2025.

Fly from

Idaho

Fly to

Dulles Intl

Route

Depart

Return

Price

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

vie. 4/11

1:23 pm-10:42 pm

1 stop7h 19m

Washington, D.C. Dulles Intl

mar. 4/15

6:18 am-12:33 pm

1 stop8h 15m

$231

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

vie. 4/11

6:40 pm-5:40 am

1 stop9h 00m

Washington, D.C. Dulles Intl

mié. 4/16

7:00 am-1:52 pm

1 stop8h 52m

$251

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

vie. 4/11

6:40 pm-5:40 am

1 stop9h 00m

Washington, D.C. Dulles Intl

sáb. 4/19

7:00 am-2:55 pm

1 stop9h 55m

$265

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

mar. 4/22

7:00 pm-5:15 am

1 stop8h 15m

Washington, D.C. Dulles Intl

mié. 4/23

5:30 pm-11:03 pm

1 stop7h 33m

$278

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

mié. 4/16

1:29 pm-5:34 am

1 stop13h 05m

Washington, D.C. Dulles Intl

dom. 4/20

7:31 am-11:02 pm

1 stop18h 31m

$296

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

mié. 4/30

1:15 pm-11:31 pm

1 stop7h 16m

Washington, D.C. Dulles Intl

lun. 5/5

7:25 am-2:53 pm

1 stop10h 28m

$297

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

sáb. 3/29

6:30 pm-5:16 am

1 stop7h 46m

Washington, D.C. Dulles Intl

mié. 4/2

8:15 am-2:36 pm

1 stop9h 21m

$298

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

vie. 4/11

3:00 pm-11:25 pm

1 stop6h 25m

Washington, D.C. Dulles Intl

mar. 4/15

5:19 pm-11:59 pm

2 stops8h 40m

$300

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

mié. 3/5

5:34 am-4:12 pm

1 stop7h 38m

Washington, D.C. Dulles Intl

mar. 4/29

2:12 pm-9:38 pm

2 stops10h 26m

$346

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

sáb. 4/12

1:25 pm-11:50 pm

1 stop8h 25m

Washington, D.C. Dulles Intl

sáb. 4/19

7:35 am-12:19 pm

1 stop6h 44m

$347

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/19

Showing 1-10 of 45 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.

Travel insights for flights from Idaho to Dulles Intl

Get recent, data-driven insights about flights from Idaho to Dulles Intl including ideal travel times, pricing trends, and more.

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 $389). 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 febrero 20, 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 febrero 20, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines 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.
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,411 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,697 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,219 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Hawaiian Airlines
7.9
Good
2,317 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,765 reviews
Southwest
8.1
Very good
4,411 reviews

Comfort

8.1

Entertainment

7.6

Food

7.1

Overall

8.1

Crew

8.7

Boarding

8.2

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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?

    $136 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 Delta, with prices starting from $148 and $149, 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 June is currently the most expensive (average of $389). 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
Alexandria
Fairfax
Springfield
Rockville
Tysons
Gaithersburg
Silver Spring
Fredericksburg
Linthicum Heights
Laurel
Falls Church
Woodbridge
Sterling
Easton
Herndon
Bowie
Reston
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.
Dallas/Fort Worth to Dulles Intl flights
Los Angeles to Reagan-National flights
Los Angeles to Dulles Intl flights
Dallas/Fort Worth to Baltimore flights
Los Angeles to Baltimore flights
San Francisco to Dulles Intl flights
Boston to Dulles Intl flights
Hobby to Baltimore flights
Atlanta to Dulles Intl flights
Seattle to Reagan-National flights
O'Hare Intl to Dulles Intl flights
San Francisco to Reagan-National flights
Boston to Reagan-National flights
O'Hare Intl to Reagan-National flights
Dallas/Fort Worth to Reagan-National flights
Boston to Baltimore flights
Seattle to Dulles Intl flights
Denver to Dulles Intl flights
O'Hare Intl to Baltimore flights
Hobby to Dulles Intl flights
Atlanta to Reagan-National flights
Orlando to Dulles Intl flights
Hobby to Reagan-National flights
San Francisco to Baltimore flights
Seattle to Baltimore flights
George Bush Intcntl to Dulles Intl flights
George Bush Intcntl to Baltimore flights
Minneapolis to Baltimore flights
Minneapolis to Reagan-National flights
Denver to Reagan-National flights
Denver to Baltimore flights
Tampa to Dulles Intl flights
Orlando to Reagan-National flights
Fort Lauderdale to Baltimore flights
Atlanta to Baltimore flights
Minneapolis to Dulles Intl flights
Charlotte to Dulles Intl flights
Austin to Dulles Intl flights
Miami to Reagan-National flights
John F Kennedy Intl to Dulles Intl flights
Portland to Reagan-National flights
Sky Harbor Intl to Dulles Intl flights
George Bush Intcntl to Reagan-National flights
Portland to Dulles Intl flights
Tampa to Reagan-National flights
Orlando to Baltimore flights
Detroit to Dulles Intl flights
Burbank to Baltimore flights
Fort Lauderdale to Dulles Intl flights
Detroit to Baltimore 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 febrero 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$300Average$501FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$316Average$652FlexibilityNo cancel feeOn-time69%
DeltaCheapest$316Average$471FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$321Average$579FlexibilityNo cancel feeOn-time63%
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