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Dulles Intl

$139+ 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 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOI — IAD
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
1 adult, Economy
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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 December 22, 2024.

Round-trip from

$292
(Delta)

One-way from

$139
(United Airlines)
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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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 December 22, 2024.

This Southwest deal was found by Cheapflights users on 12/20. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/256:00 amBOI - IAD
1 stop7h 00mSouthwest
Sun 1/58:00 pmIAD - BOI
1 stop6h 45mSouthwest
Deal found 12/20$823
This Delta deal was found by Cheapflights users on 12/21. 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.
Tue 12/241:40 pmGEG - IAD
1 stop6h 39mDelta
Tue 12/315:27 pmIAD - GEG
2 stops8h 44mDelta
Deal found 12/21$857
This Delta deal was found by Cheapflights users on 12/21. 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.
Sat 12/2111:30 pmBOI - IAD
1 stop7h 44mDelta
Sun 1/56:00 amIAD - BOI
1 stop8h 52mDelta
Deal found 12/21$873
This Alaska Airlines deal was found by Cheapflights users on 12/21. 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.
Thu 12/268:00 pmBOI - IAD
1 stop7h 40mAlaska Airlines
Thu 1/25:24 pmIAD - BOI
1 stop21h 31mAlaska Airlines
Deal found 12/21$954
This American Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/235:30 amGEG - IAD
1 stop7h 54mAmerican Airlines
Mon 12/305:15 pmIAD - GEG
1 stop10h 24mAmerican Airlines
Deal found 12/21$956
This United deal was found by Cheapflights users on 12/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/241:47 pmGEG - IAD
1 stop6h 38mUnited Airlines
Tue 12/314:05 pmIAD - GEG
1 stop7h 59mUnited Airlines
Deal found 12/21$991
This American Airlines deal was found by Cheapflights users on 12/21. 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 12/251:23 pmBOI - IAD
1 stop7h 16mAmerican Airlines
Sat 12/286:21 amIAD - BOI
1 stop8h 12mAmerican Airlines
Deal found 12/21$1,046
This United deal was found by Cheapflights users on 12/21. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/217:25 pmBOI - IAD
2 stops23h 35mUnited Airlines
Sun 1/510:10 pmIAD - BOI
2 stops25h 23mUnited Airlines
Deal found 12/21$1,066
This Alaska Airlines deal was found by Cheapflights users on 12/20. 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.
Fri 12/207:57 pmGEG - IAD
1 stop19h 01mAlaska Airlines
Mon 1/66:57 pmIAD - GEG
1 stop7h 56mAlaska Airlines
Deal found 12/20$1,101

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 December 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Thu 1/23

2:10 pm-11:40 pm

1 stop6h 30m

Washington, D.C. Dulles Intl

Wed 1/29

6:00 am-12:00 pm

1 stop9h 00m

$292

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sun 1/19

1:50 pm-11:30 pm

1 stop6h 40m

Washington, D.C. Dulles Intl

Mon 1/20

6:32 am-3:33 pm

1 stop12h 01m

$319

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Tue 1/14

1:20 pm-11:36 pm

1 stop8h 16m

Washington, D.C. Dulles Intl

Sun 1/19

4:05 pm-11:46 pm

1 stop9h 41m

$328

JacksonWashington, D.C.

JAC - IAD

JACIAD

Jackson Hole

Thu 4/3

12:53 pm-10:14 pm

1 stop7h 21m

Washington, D.C. Dulles Intl

Tue 4/8

6:18 am-12:13 pm

1 stop7h 55m

$329

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Fri 5/9

7:00 am-6:45 pm

1 stop8h 45m

Washington, D.C. Dulles Intl

Sat 5/17

7:00 am-1:48 pm

1 stop9h 48m

$332

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Sat 2/22

1:23 pm-10:33 pm

1 stop7h 10m

Washington, D.C. Dulles Intl

Wed 2/26

6:12 am-12:30 pm

1 stop8h 18m

$339

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Thu 1/9

8:00 am-5:57 pm

1 stop7h 57m

Washington, D.C. Dulles Intl

Sat 1/11

6:57 pm-12:19 pm

1 stop19h 22m

$357

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Sun 1/19

5:27 am-7:35 pm

2 stops11h 08m

Washington, D.C. Dulles Intl

Sun 1/26

1:53 pm-11:10 pm

2 stops12h 17m

$417

BoiseWashington, D.C.

BOI - IAD

BOIIAD

Boise Air Term. Gowen Fld

Mon 2/17

6:58 pm-5:18 am

1 stop8h 20m

Washington, D.C. Dulles Intl

Sat 2/22

8:30 am-4:16 pm

1 stop9h 46m

$446

SpokaneWashington, D.C.

GEG - IAD

GEGIAD

Spokane

Thu 1/23

7:50 am-11:05 pm

2 stops12h 15m

Washington, D.C. Dulles Intl

Wed 1/29

11:10 am-9:10 pm

2 stops13h 00m

$520

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/21

Showing 1-10 of 35 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 December 22, 2024.

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 December 22, 2024.
Get a feel of what it's like to fly with Delta, Southwest and Alaska Airlines 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
4,804 reviews

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

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
4,804 reviews
Southwest
8.1
Very good
4,804 reviews

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

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
9,537 reviews
Southwest
8.1
Very good
4,804 reviews

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

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
8,597 reviews
Southwest
8.1
Very good
4,804 reviews

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

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
9,035 reviews
Southwest
8.1
Very good
4,804 reviews

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

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
4,804 reviews

Boarding

8.2

Crew

8.7

Entertainment

7.7

Comfort

8.1

Food

7.2

Overall

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?

    $139 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Delta and Alaska Airlines, with prices starting from $144 and $186, 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.

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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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Denver to Baltimore flights
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LaGuardia to Dulles Intl flights
Seattle to Baltimore flights
Minneapolis to Baltimore flights
Fort Lauderdale to Dulles Intl flights
John F Kennedy Intl to Dulles Intl flights
Detroit to Baltimore flights
Miami to Dulles Intl flights
John F Kennedy Intl to Reagan-National flights
Miami to Reagan-National flights
Minneapolis to Dulles Intl flights
Austin to Dulles Intl flights
LaGuardia to Reagan-National flights
Denver to Reagan-National flights
Newark to Dulles Intl flights
Detroit to Reagan-National flights
Sky Harbor Intl to Dulles Intl flights
Fort Lauderdale to Reagan-National flights
Miami 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 December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$316Average$674FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$321Average$591FlexibilityNo cancel feeOn-time63%
DeltaCheapest$334Average$486FlexibilityNo cancel feeOn-timeN/A
Alaska AirlinesCheapest$397Average$501FlexibilityNo cancel feeOn-time75%
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