What is the cheapest month to book a flight from Osaka Kansai Intl Airport to Washington, D.C. Dulles Intl Airport?

Currently, July is the cheapest month in which you can book a flight from Osaka Kansai Intl Airport to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Osaka Kansai Intl Airport 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.

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.

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).

What is the cheapest time of day to fly from KIX to IAD?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Osaka Kansai Intl Airport to Washington, D.C. Dulles Intl Airport as you normally would.

Can I find deals for flights from Kansai Intl to Dulles Intl that include hotel bookings?

Yes. In addition to deals on Kansai Intl to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Kansai Intl to Dulles Intl?

After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kansai Intl to Dulles Intl.

Can I find deals for business class flights from Kansai Intl to Dulles Intl?

Yes. Cheapflights offers flight deals from Kansai Intl 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.

$489+ Flights from Osaka Kansai Intl Airport to Washington, D.C. Dulles Intl Airport

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Cheap flight deals from Kansai Intl to Dulles Intl

Round-trip from	$980 (Air Canada)
One-way from	$489 (Kiwi.com)

From Osaka Kansai Intl to Washington, D.C. Dulles Intl

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One-way flight from Osaka Kansai Intl to Washington, D.C. Dulles Intl

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Cheapest flights from Kansai Intl to Dulles Intl
Explore the most affordable flight options available from Kansai Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2025.

Fri 12/197:25 amKIX - IAD

2 stops27h 40mMultiple Airlines

Sun 1/49:00 amIAD - KIX

2 stops23h 20mMultiple Airlines

Deal found 8/13

$980

Thu 9/254:15 pmKIX - IAD

2 stops28h 18mMultiple Airlines

Thu 10/27:00 amIAD - KIX

2 stops26h 50mMultiple Airlines

Deal found 8/11

$1,000

Fri 9/269:05 amKIX - IAD

1 stop23h 25mAir China

Fri 10/311:00 pmIAD - KIX

1 stop32h 30mAir China

Deal found 8/12

$1,094

Tue 8/266:05 pmKIX - IAD

1 stop25h 26mAir Canada

Tue 9/1610:20 amIAD - KIX

1 stop17h 05mAir Canada

Deal found 8/11

$1,231

Sat 9/277:40 amKIX - IAD

2 stops26h 25mMultiple Airlines

Sat 10/49:35 amIAD - KIX

2 stops34h 25mMultiple Airlines

Deal found 8/13

$1,338

Fri 9/261:10 pmKIX - IAD

2 stops31h 23mMultiple Airlines

Fri 10/36:09 pmIAD - KIX

2 stops27h 01mMultiple Airlines

Deal found 8/12

$1,349

Fri 10/3110:55 amKIX - IAD

2 stops42h 45mMultiple Airlines

Tue 11/46:13 pmIAD - KIX

2 stops25h 42mMultiple Airlines

Deal found 8/13

$1,402

Thu 10/167:10 pmKIX - IAD

2 stops36h 29mAsiana Airlines

Sat 10/186:30 pmIAD - KIX

2 stops37h 35mAsiana Airlines

Deal found 8/12

$1,427

Best flights from Kansai Intl to Dulles Intl
Discover carefully curated flight deals from Kansai Intl to Dulles Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 13, 2025.

Fri 12/197:25 amKIX - IAD

2 stops27h 04mMultiple Airlines

Mon 1/510:05 pmIAD - KIX

2 stops31h 20mMultiple Airlines

Deal found 8/13

$980

Fri 9/269:05 amKIX - IAD

1 stop23h 25mAir China

Fri 10/311:00 pmIAD - KIX

1 stop32h 30mAir China

Deal found 8/12

$1,094

Tue 8/266:05 pmKIX - IAD

1 stop25h 26mAir Canada

Tue 9/1610:20 amIAD - KIX

1 stop17h 05mAir Canada

Deal found 8/11

$1,231

Fri 12/197:25 amKIX - IAD

2 stops27h 40mMultiple Airlines

Sun 1/49:00 amIAD - KIX

2 stops23h 20mMultiple Airlines

Deal found 8/13

$980

Thu 9/254:15 pmKIX - IAD

2 stops28h 18mMultiple Airlines

Thu 10/27:00 amIAD - KIX

2 stops26h 50mMultiple Airlines

Deal found 8/11

$1,000

Last-minute flights from Kansai Intl to Dulles Intl
Discover last-minute flight deals from Kansai Intl to Dulles Intl. Data last updated August 13, 2025 and is based on user searches.

Tue 8/266:05 pmKIX - IAD

1 stop25h 26mAir Canada

Tue 9/1610:20 amIAD - KIX

1 stop17h 05mAir Canada

Deal found 8/11

$1,231

Tue 8/266:30 pmKIX - IAD

2 stops26h 02mMultiple Airlines

Tue 9/168:00 pmIAD - KIX

2 stops25h 10mMultiple Airlines

Deal found 8/13

$1,442

Thu 9/254:15 pmKIX - IAD

2 stops28h 18mMultiple Airlines

Thu 10/27:00 amIAD - KIX

2 stops26h 50mMultiple Airlines

Deal found 8/11

$1,000

Fri 9/269:05 amKIX - IAD

1 stop23h 25mAir China

Fri 10/311:00 pmIAD - KIX

1 stop32h 30mAir China

Deal found 8/12

$1,094

Fri 9/261:10 pmKIX - IAD

2 stops31h 23mMultiple Airlines

Fri 10/36:09 pmIAD - KIX

2 stops27h 01mMultiple Airlines

Deal found 8/12

$1,349

Sat 9/277:40 amKIX - IAD

2 stops26h 25mMultiple Airlines

Sat 10/49:35 amIAD - KIX

2 stops34h 25mMultiple Airlines

Deal found 8/13

$1,338

One-way flights from Kansai Intl to Dulles Intl
Search for one-way flight options from Kansai Intl to Dulles Intl. Find affordable one-way fares based on user searches. Data last updated August 13, 2025.

Sun 9/77:35 amKIX - IAD

3 stops46h 17mMultiple Airlines

Deal found 8/12

$489

Sat 9/138:55 pmKIX - IAD

3 stops56h 57mMultiple Airlines

Deal found 8/13

$522

Tue 10/287:25 amKIX - IAD

3 stops29h 20mMultiple Airlines

Deal found 8/11

$525

Mon 10/208:55 pmKIX - IAD

3 stops59h 51mMultiple Airlines

Deal found 8/10

$557

Mon 10/277:25 amKIX - IAD

3 stops40h 04mMultiple Airlines

Deal found 8/11

$572

Mon 9/110:40 amKIX - IAD

3 stops47h 59mMultiple Airlines

Deal found 8/13

$579

Mon 10/138:55 pmKIX - IAD

3 stops59h 51mMultiple Airlines

Deal found 8/11

$622

Mon 10/271:30 pmKIX - IAD

2 stops43h 00mAir China

Deal found 8/11

$629

Cheapflights Fare Finder

Use the filters below to find and compare flights from Osaka Kansai Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

OsakaWashington, D.C.

KIX - IAD

KIXIAD

Osaka Kansai Intl

Fri 12/19

7:25 am-8:29 pm

2 stops27h 04m

Washington, D.C. Dulles Intl

Mon 1/5

10:05 pm-7:25 pm

2 stops31h 20m

$980

OsakaWashington, D.C.

KIX - IAD

KIXIAD

Osaka Kansai Intl

Fri 12/19

7:25 am-9:05 pm

2 stops27h 40m

Washington, D.C. Dulles Intl

Sun 1/4

9:00 am-10:20 pm

2 stops23h 20m

$980

OsakaWashington, D.C.

KIX - IAD

KIXIAD

Osaka Kansai Intl

Thu 9/25

4:15 pm-7:33 am

2 stops28h 18m

Washington, D.C. Dulles Intl

Thu 10/2

7:00 am-10:50 pm

2 stops26h 50m

$1,000

OsakaWashington, D.C.

KIX - IAD

KIXIAD

Osaka Kansai Intl

Fri 9/26

9:05 am-7:30 pm

1 stop23h 25m

Washington, D.C. Dulles Intl

Fri 10/3

11:00 pm-8:30 pm

1 stop32h 30m

$1,094

OsakaWashington, D.C.

KIX - IAD

KIXIAD

Osaka Kansai Intl

Tue 8/26

6:05 pm-6:31 am

1 stop25h 26m

Washington, D.C. Dulles Intl

Tue 9/16

10:20 am-4:25 pm

1 stop17h 05m

$1,231

OsakaWashington, D.C.

KIX - IAD

KIXIAD

Osaka Kansai Intl

Sun 9/7

7:35 am-4:52 pm

3 stops46h 17m

$489

OsakaWashington, D.C.

KIX - IAD

KIXIAD

Osaka Kansai Intl

Sat 9/13

8:55 pm-4:52 pm

3 stops56h 57m

$522

OsakaWashington, D.C.

KIX - IAD

KIXIAD

Osaka Kansai Intl

Tue 10/28

7:25 am-11:45 pm

3 stops29h 20m

$525

OsakaWashington, D.C.

KIX - IAD

KIXIAD

Osaka Kansai Intl

Mon 10/20

8:55 pm-7:46 pm

3 stops59h 51m

$557

OsakaWashington, D.C.

KIX - IAD

KIXIAD

Osaka Kansai Intl

Mon 10/27

7:25 am-10:29 am

3 stops40h 04m

$572

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/12

Showing 1-10 of 13 results

Best time to book a flight from Kansai Intl to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Kansai Intl 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.

Related info for your journey

Can I find deals for flights from Kansai Intl to Dulles Intl that include hotel bookings?
Yes. In addition to deals on Kansai Intl to Dulles Intl flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Kansai Intl to Dulles Intl?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kansai Intl to Dulles Intl.
Can I find deals for business class flights from Kansai Intl to Dulles Intl?
Yes. Cheapflights offers flight deals from Kansai Intl 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 Osaka Kansai Intl Airport to Washington, D.C. Dulles Intl Airport?
Currently, July is the cheapest month in which you can book a flight from Osaka Kansai Intl Airport to Washington, D.C. Dulles Intl Airport (average of $302). Flying from Osaka Kansai Intl Airport 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

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$489+ Cheap flights from Kansai Intl (KIX) 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 9/7. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Kansai Intl to Dulles Intl with Cheapflights

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2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Kansai Intl to Dulles Intl

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Find flight deals from Kansai Intl to Dulles Intl

Cheapest flights from Kansai Intl to Dulles IntlExplore the most affordable flight options available from Kansai Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2025.

Explore the most affordable flight options available from Kansai Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Osaka Kansai Intl Airport to Washington, D.C. Dulles Intl Airport that are best for you.

Best time to book a flight from Kansai Intl to Dulles Intl

Have a flexible travel schedule? Discover the best time to fly to Dulles Intl from Kansai Intl with our price prediction graph.

Related info for your journey

Find useful and relevant information for your journey from Kansai Intl to Dulles Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

Can I find deals for flights from Kansai Intl to Dulles Intl that include hotel bookings?

How can I find direct flights from Kansai Intl to Dulles Intl?

Can I find deals for business class flights from Kansai Intl to Dulles Intl?

What is the cheapest month to book a flight from Osaka Kansai Intl Airport to Washington, D.C. Dulles Intl Airport?

Traveling to a place near Washington, D.C. Dulles Intl Airport?

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Cheapest flights from Kansai Intl to Dulles Intl
Explore the most affordable flight options available from Kansai Intl to Dulles Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 13, 2025.