HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Dulles Intl

$151+ 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 2/1. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
ene. 22 — ene. 291
mié. 1/22
mié. 1/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Idaho to Dulles Intl with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Idaho to Dulles Intl

Discover tips and strategies to find the most affordable flight options for your journey from Idaho (USID) to Dulles Intl (IAD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated enero 17, 2025.

Round-trip from

$301
(United Airlines)

One-way from

$151
(Delta)
From Idaho to Washington, D.C. Dulles Intl
Search Deals
One-way flight from Idaho to Washington, D.C. Dulles Intl
Search Deals

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 enero 17, 2025.

This Delta deal was found by Cheapflights users on 1/16. 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.
jue. 2/131:39 pmBOI - IAD
1 stop8h 41mDelta
jue. 2/206:05 amIAD - BOI
1 stop10h 00mDelta
Deal found 1/16$301
This Alaska Airlines deal was found by Cheapflights users on 1/16. 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.
sáb. 2/16:00 amGEG - IAD
1 stop8h 57mAlaska Airlines
sáb. 2/86:57 pmIAD - GEG
1 stop7h 46mAlaska Airlines
Deal found 1/16$306
This Delta deal was found by Cheapflights users on 1/16. 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.
jue. 1/301:10 pmGEG - IAD
1 stop8h 12mDelta
mié. 2/54:05 pmIAD - GEG
1 stop8h 02mDelta
Deal found 1/16$307
This Alaska Airlines deal was found by Cheapflights users on 1/16. 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.
sáb. 3/812:35 pmJAC - IAD
1 stop24h 43mAlaska Airlines
mié. 3/127:00 amIAD - JAC
1 stop29h 58mAlaska Airlines
Deal found 1/16$341
This Southwest deal was found by Cheapflights users on 1/16. 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.
mar. 4/17:35 amBOI - IAD
1 stop7h 05mSouthwest
mar. 4/86:40 pmIAD - BOI
1 stop6h 50mSouthwest
Deal found 1/16$350
This United Airlines deal was found by Cheapflights users on 1/14. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 5/131:20 pmBOI - IAD
1 stop9h 22mUnited Airlines
mar. 5/206:00 amIAD - BOI
1 stop8h 35mUnited Airlines
Deal found 1/14$363
This American Airlines deal was found by Cheapflights users on 1/14. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/17:31 amIDA - IAD
2 stops13h 02mAmerican Airlines
mié. 3/56:12 amIAD - IDA
1 stop8h 05mAmerican Airlines
Deal found 1/14$400
This United Airlines deal was found by Cheapflights users on 1/16. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/311:50 pmGEG - IAD
1 stop6h 40mUnited Airlines
mar. 2/46:32 amIAD - GEG
1 stop12h 01mUnited Airlines
Deal found 1/16$407
This American Airlines deal was found by Cheapflights users on 1/16. 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.
dom. 2/25:26 pmBOI - IAD
2 stops13h 15mAmerican Airlines
mié. 2/59:11 amIAD - BOI
2 stops14h 41mAmerican Airlines
Deal found 1/16$408
This Alaska Airlines deal was found by Cheapflights users on 1/16. 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.
lun. 3/246:40 pmBOI - IAD
1 stop9h 00mAlaska Airlines
lun. 3/316:59 pmIAD - BOI
1 stop20h 16mAlaska Airlines
Deal found 1/16$411
This Southwest deal was found by Cheapflights users on 1/16. 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.
mié. 2/197:50 amGEG - IAD
2 stops12h 15mSouthwest
mar. 2/2511:10 amIAD - GEG
2 stops13h 00mSouthwest
Deal found 1/16$420
This Alaska Airlines deal was found by Cheapflights users on 1/14. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/18:00 amIDA - IAD
1 stop7h 48mAlaska Airlines
mié. 3/57:00 amIAD - IDA
1 stop10h 30mAlaska Airlines
Deal found 1/14$423

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 enero 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

jue. 2/13

11:05 am-8:51 pm

1 stop7h 46m

Washington, D.C. Dulles Intl

dom. 2/16

3:57 pm-9:29 pm

1 stop7h 32m

$301

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

vie. 1/31

5:30 am-1:46 pm

1 stop6h 16m

Washington, D.C. Dulles Intl

jue. 2/6

6:00 am-1:45 pm

2 stops9h 45m

$306

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

sáb. 2/1

6:00 am-5:57 pm

1 stop8h 57m

Washington, D.C. Dulles Intl

sáb. 2/8

6:57 pm-11:43 pm

1 stop7h 46m

$306

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

jue. 1/30

1:10 pm-12:22 am

1 stop8h 12m

Washington, D.C. Dulles Intl

mié. 2/5

4:05 pm-9:07 pm

1 stop8h 02m

$307

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

sáb. 3/8

12:35 pm-3:18 pm

1 stop24h 43m

Washington, D.C. Dulles Intl

mié. 3/12

7:00 am-10:58 am

1 stop29h 58m

$341

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

mar. 4/1

7:35 am-4:40 pm

1 stop7h 05m

Washington, D.C. Dulles Intl

mar. 4/8

6:40 pm-11:30 pm

1 stop6h 50m

$350

Idaho FallsWashington, D.C.

IDA - IAD

IDAIAD

Idaho Falls Fanning Field

sáb. 3/1

7:31 am-10:33 pm

2 stops13h 02m

Washington, D.C. Dulles Intl

mié. 3/5

6:12 am-12:17 pm

1 stop8h 05m

$400

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

vie. 1/31

1:50 pm-11:30 pm

1 stop6h 40m

Washington, D.C. Dulles Intl

mar. 2/4

6:32 am-3:33 pm

1 stop12h 01m

$407

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

dom. 2/2

5:26 pm-8:41 am

2 stops13h 15m

Washington, D.C. Dulles Intl

mié. 2/5

9:11 am-9:52 pm

2 stops14h 41m

$408

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

lun. 3/24

6:40 pm-5:40 am

1 stop9h 00m

Washington, D.C. Dulles Intl

lun. 3/31

6:59 pm-1:15 pm

1 stop20h 16m

$411

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 43 results
1
2
3
...
5

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 enero 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 enero 17, 2025.
Get a feel of what it's like to fly with American Airlines, 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
4,659 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,659 reviews
Southwest
8.1
Very good
4,659 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Alaska Airlines
8.0
Very good
9,681 reviews
Southwest
8.1
Very good
4,659 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,511 reviews
Southwest
8.1
Very good
4,659 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,964 reviews
Southwest
8.1
Very good
4,659 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,659 reviews

Overall

8.1

Boarding

8.2

Entertainment

7.7

Food

7.2

Crew

8.7

Comfort

8.1

Reviews

1 / 10

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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?

    $151 is the cheapest one-way deal found within the past few days, from Delta. You may also be able to find cheap deals on Alaska Airlines and United Airlines, with prices starting from $153 and $154, 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 Idaho Falls Fanning Field - 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
Fairfax
Arlington
Alexandria
Springfield
Silver Spring
Rockville
Tysons
Gaithersburg
Fredericksburg
Linthicum Heights
Laurel
Falls Church
Greenbelt
Sterling
Easton
Oxon Hill
Herndon
Woodbridge
Bowie
Reston

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 Baltimore flights
Dallas/Fort Worth to Dulles Intl flights
Los Angeles to Reagan-National flights
Atlanta to Dulles Intl flights
Miami to Reagan-National flights
Los Angeles to Dulles Intl flights
Los Angeles to Baltimore flights
Dallas/Fort Worth to Reagan-National flights
Atlanta to Reagan-National flights
O'Hare Intl to Dulles Intl flights
Hobby to Baltimore flights
San Francisco to Reagan-National flights
Hobby to Reagan-National flights
O'Hare Intl to Reagan-National flights
Fort Lauderdale to Baltimore flights
Boston to Reagan-National flights
Orlando to Dulles Intl flights
Hobby to Dulles Intl flights
San Francisco to Dulles Intl flights
Boston to Baltimore flights
Boston to Dulles Intl flights
Atlanta to Baltimore flights
O'Hare Intl to Baltimore flights
Seattle to Reagan-National flights
Seattle to Dulles Intl flights
Minneapolis to Reagan-National flights
George Bush Intcntl to Dulles Intl flights
Tampa to Dulles Intl flights
Denver to Baltimore flights
Denver to Dulles Intl flights
San Francisco to Baltimore flights
Miami to Baltimore flights
Detroit to Baltimore flights
Denver to Reagan-National flights
Minneapolis to Baltimore flights
Orlando to Reagan-National flights
Austin to Dulles Intl flights
Minneapolis to Dulles Intl flights
George Bush Intcntl to Baltimore flights
George Bush Intcntl to Reagan-National flights
Miami to Dulles Intl flights
Seattle to Baltimore flights
Orlando to Baltimore flights
Newark to Dulles Intl flights
Tampa to Reagan-National flights
Detroit to Dulles Intl flights
Newark to Reagan-National flights
Tampa to Baltimore flights
Detroit to Reagan-National flights
Salt Lake City 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 enero 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$316Average$673FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$321Average$591FlexibilityNo cancel feeOn-time63%
DeltaCheapest$334Average$491FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$377Average$501FlexibilityNo cancel feeOn-time75%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.