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Osaka

$503+ Cheap flights from Dulles Intl (IAD) to Osaka (OSA)

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 8/15. Fares are subject to change and may not be available on all flights or dates of travel.
IAD — OSA
Jul 14 — Jul 211
Tue 7/14
Tue 7/21
1 adult, Economy
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Cheap flight deals from Dulles Intl to Osaka

Cheapest flights from Dulles Intl to Osaka
Explore the most affordable flight options available from Dulles Intl to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 14, 2026.

This oojo deal was found by Cheapflights users on 6/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:50 am
IAD
-
UKB
1 stop27h 10m
EVA Air
Sun 9/137:00 pm
UKB
-
IAD
1 stop40h 00m
EVA Air
Deal found 6/14$1,136
This oojo deal was found by Cheapflights users on 6/12. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:15 am
IAD
-
KIX
1 stop21h 55m
EVA Air
Sun 10/46:30 pm
KIX
-
IAD
1 stop40h 30m
EVA Air
Deal found 6/12$1,141
This oojo deal was found by Cheapflights users on 6/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:15 am
IAD
-
KIX
1 stop21h 55m
EVA Air
Thu 10/86:30 pm
KIX
-
IAD
1 stop40h 30m
EVA Air
Deal found 6/10$1,182
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/281:15 am
IAD
-
UKB
1 stop27h 45m
EVA Air
Thu 10/87:00 pm
UKB
-
IAD
1 stop40h 00m
EVA Air
Deal found 6/10$1,189
This Trip.com deal was found by Cheapflights users on 6/10. 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.
Wed 9/161:15 am
IAD
-
KIX
1 stop27h 00m
EVA Air
Wed 9/3011:10 am
KIX
-
IAD
1 stop23h 50m
EVA Air
Deal found 6/10$1,190
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:15 am
IAD
-
KIX
1 stop27h 00m
EVA Air
Sun 10/46:30 pm
KIX
-
IAD
1 stop40h 30m
EVA Air
Deal found 6/10$1,194
This Trip.com deal was found by Cheapflights users on 6/11. 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.
Fri 9/111:15 am
IAD
-
KIX
1 stop21h 55m
EVA Air
Sun 1/316:10 pm
KIX
-
IAD
1 stop40h 45m
EVA Air
Deal found 6/11$1,205
This oojo deal was found by Cheapflights users on 6/14. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/65:33 pm
IAD
-
KIX
2 stops29h 42m
STARLUX Airlines
Thu 10/153:10 pm
KIX
-
IAD
2 stops27h 30m
STARLUX Airlines
Deal found 6/14$1,219
This oojo deal was found by Cheapflights users on 6/10. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/195:46 pm
IAD
-
KIX
2 stops31h 14m
STARLUX Airlines
Sun 10/41:25 pm
KIX
-
IAD
2 stops29h 15m
STARLUX Airlines
Deal found 6/10$1,228
This Justfly.com deal was found by Cheapflights users on 6/10. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:15 am
IAD
-
UKB
1 stop27h 45m
EVA Air
Fri 10/911:00 am
UKB
-
IAD
1 stop24h 00m
EVA Air
Deal found 6/10$1,230
This FlightHub deal was found by Cheapflights users on 6/10. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/251:15 am
IAD
-
KIX
1 stop27h 00m
EVA Air
Sat 10/101:10 pm
KIX
-
IAD
1 stop21h 50m
EVA Air
Deal found 6/10$1,232
This Korean Air deal was found by Cheapflights users on 6/12. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/211:15 pm
IAD
-
UKB
1 stop32h 40m
Korean Air
Mon 11/166:40 pm
UKB
-
IAD
1 stop29h 10m
Korean Air
Deal found 6/12$1,235

Find flight deals from Dulles Intl to Osaka

Discover tips and strategies to find the most affordable flight options for your journey from Dulles Intl (IAD) to Osaka (OSA). 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 June 14, 2026.

Most accurate provider

Ovago
3 stars

Most trusted provider

Ovago
3 stars

Round-trip from

$1,141
(oojo)

One-way from

$503
(Kiwi.com)

Popular in

December

Cheapest in

July

Average price

$1,363
Provider with most accurate pricing for Washington, D.C. Dulles Intl-Osaka (OSA) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Washington, D.C. Dulles Intl-Osaka (OSA) flights.
Search Deals
From Washington, D.C. Dulles Intl to Osaka (OSA)
Search Deals
One-way flight from Washington, D.C. Dulles Intl to Osaka (OSA)
Search Deals
Highest demand for flights based on searches. 26% potential increase in price ($472 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 11% potential price decrease ($139 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in June 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Dulles Intl to Osaka 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 June 14, 2026.
Use the filters below to find and compare flights from Washington, D.C. Dulles Intl Airport to Osaka that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Washington, D.C.Osaka

IAD - KIX

IADKIX

Washington, D.C. Dulles Intl

Fri 9/11

1:15 am-12:10 pm

1 stop21h 55m

Osaka Kansai Intl

Wed 9/16

11:10 am-10:00 pm

1 stop23h 50m

$1,244

Washington, D.C.Kobe

IAD - UKB

IADUKB

Washington, D.C. Dulles Intl

Sat 9/5

1:15 am-6:00 pm

1 stop27h 45m

Kobe

Thu 9/10

7:00 pm-10:00 pm

1 stop40h 00m

$1,279

Washington, D.C.Osaka

IAD - KIX

IADKIX

Washington, D.C. Dulles Intl

Sun 9/6

1:15 pm-10:40 pm

1 stop20h 25m

Osaka Kansai Intl

Sat 9/19

12:35 pm-11:05 am

1 stop35h 30m

$1,287

Washington, D.C.Kobe

IAD - UKB

IADUKB

Washington, D.C. Dulles Intl

Wed 8/26

1:50 am-6:00 pm

1 stop27h 10m

Kobe

Mon 8/31

11:00 am-10:30 pm

1 stop24h 30m

$1,299

Washington, D.C.Kobe

IAD - UKB

IADUKB

Washington, D.C. Dulles Intl

Fri 10/16

5:33 pm-6:00 pm

2 stops35h 27m

Kobe

Mon 10/19

11:00 am-10:00 pm

1 stop24h 00m

$1,324

Washington, D.C.Osaka

IAD - KIX

IADKIX

Washington, D.C. Dulles Intl

Mon 8/24

2:53 pm-9:15 pm

2 stops41h 22m

Osaka Kansai Intl

Mon 8/31

9:05 am-6:27 pm

2 stops46h 22m

$1,329

Washington, D.C.Osaka

IAD - KIX

IADKIX

Washington, D.C. Dulles Intl

Wed 8/19

2:53 pm-2:50 pm

3 stops34h 57m

Osaka Kansai Intl

Thu 12/10

9:25 am-5:00 am

2 stops33h 35m

$1,337

Washington, D.C.Kobe

IAD - UKB

IADUKB

Washington, D.C. Dulles Intl

Tue 10/6

12:35 pm-9:45 pm

1 stop20h 10m

Kobe

Thu 10/15

7:05 am-10:05 am

1 stop16h 00m

$1,353

Washington, D.C.Kobe

IAD - UKB

IADUKB

Washington, D.C. Dulles Intl

Sun 9/27

12:15 pm-9:45 pm

1 stop20h 30m

Kobe

Fri 10/9

7:05 am-10:05 am

1 stop16h 00m

$1,353
Quickest round-trip

Washington, D.C.Osaka

IAD - ITM

IADITM

Washington, D.C. Dulles Intl

Tue 9/22

12:35 pm-8:35 pm

1 stop19h 00m

Osaka Itami

Thu 10/8

7:05 am-10:05 am

1 stop16h 00m

$1,353

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/14

Showing 1-10 of 48 resultsSorted by cheapest first
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Compare providers for flights from Dulles Intl to Osaka

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Dulles Intl to Osaka in June.
ProviderPrice AccuracyTrust Score*
OvagoPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Osaka flights, users find the pricing of Ovago to be most consistent on Cheapflights vs. Ovago Users can find the same prices on Washington, D.C. Dulles Intl Airport-Osaka flight deals on Cheapflights vs. Ovago >95% of the time. Price accuracy is based on data collected from Washington, D.C. Dulles Intl Airport-Osaka flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Washington, D.C. Dulles Intl Airport-Osaka flights, Cheapflights users trust Ovago the most. Ovago has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Washington, D.C. Dulles Intl Airport-Osaka flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Dulles Intl to Osaka

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

Cheapflights Insights

Everything you need to know about your flight from Washington, D.C. Dulles Intl Airport to Osaka

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

Currently, July is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Osaka (average of $247). Flying from Washington, D.C. Dulles Intl Airport to Osaka in December is currently the most expensive (average of $2,816). 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.

How much does it cost to fly round-trip from Washington, D.C. Dulles Intl Airport to Osaka?

Reviews of airlines servicing Osaka

Get insights into the airlines that provide service to Osaka. 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 Osaka. Reviews last updated June 14, 2026.
See what other customers who have flown with ANA from Washington, D.C. Dulles Intl Airport to Osaka have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
ANA
8.3
Very good
1,236 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Food

7.7

Entertainment

7.9

Overall

8.3

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.
ANA
8.3
Very good
1,236 reviews
ANA
8.3
Very good
1,236 reviews

Boarding

8.5

Crew

8.7

Comfort

8.2

Food

7.7

Entertainment

7.9

Overall

8.3

Reviews

1 / 20
4.0
Okay

PeggyLee,Jun 2026

BKK - NRT

It was unexpectedly below the expectation from the overall atmosphere of older plane, older seats, and most disappointment probably the meals. Will not be booking ANA again.

Related info for your journey

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

  • How long is the flight from Washington, D.C. Dulles Intl Airport to Osaka?

    For as low as $1,189, EVA Air can have you in Osaka from Washington, D.C. Dulles Intl Airport in 27h 45m. Airlines will cover a distance of 6935 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What is the cheapest airline to fly from Washington, D.C. Dulles Intl Airport to Osaka round-trip?

    According to our current data, ANA ($964), offers the cheapest pricing from Washington, D.C. Dulles Intl Airport to Osaka. ANA is priced at 25% lower than the current average price of a flight leaving 3 months from now.

  • What are the most popular routes from Washington, D.C. Dulles Intl Airport to Osaka?

    The most popular route from Washington, D.C. Dulles Intl Airport to Osaka is Washington, D.C. Dulles Intl - Osaka Kansai Intl. You may also consider Washington, D.C. Dulles Intl - Osaka Itami or Washington, D.C. Dulles Intl - Kobe.

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

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

  • How can I find direct flights from Dulles Intl to Osaka?

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

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

    Yes. Cheapflights offers flight deals from Dulles Intl to Osaka 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 Washington, D.C. Dulles Intl Airport to Osaka?

    Currently, July is the cheapest month in which you can book a flight from Washington, D.C. Dulles Intl Airport to Osaka (average of $247). Flying from Washington, D.C. Dulles Intl Airport to Osaka in December is currently the most expensive (average of $2,816). 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 Osaka?

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Top airline flying from Dulles Intl to Osaka

Discover the top airline that operate flights from Dulles Intl to Osaka. 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 June 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
ANACheapest$964Average$1,230FlexibilityNo cancel feeOn-time80%

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