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$294+ Cheap flights from Washington 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 1/29. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSA
feb. 13 — feb. 201
vie. 2/13
vie. 2/20
1 adult, Economy
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Cheap flight deals from Washington to Osaka

Keep the following information in mind while searching for Washington to Osaka flight deals. Data was last updated enero 14, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$488
(Expedia)

One-way from

$294
(Air Canada)

Popular in

December

Cheapest in

January

Average price

$677
Provider with most accurate pricing for Seattle/Tacoma Intl-Osaka (OSA) flight deals.
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Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Osaka (OSA) flights.
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From Washington to Osaka (OSA)
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One-way flight from Washington to Osaka (OSA)
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Highest demand for flights based on searches. 4% potential increase in price ($38 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($37 potential savings vs. average RT price).
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Average for round-trip flights in January 2026
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Find flight deals from Washington to Osaka

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

This Expedia 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 2/288:00 pm
SEA
-
KIX
1 stop28h 40m
Air Canada
sáb. 3/77:25 pm
KIX
-
SEA
1 stop12h 36m
Air Canada
Deal found 1/14$488
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 3/75:00 am
SEA
-
ITM
2 stops20h 55m
ANA
dom. 3/156:00 pm
ITM
-
SEA
1 stop12h 20m
ANA
Deal found 1/14$588
This FlightHub 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/293:45 pm
SEA
-
UKB
1 stop23h 15m
ANA
lun. 2/97:05 am
UKB
-
SEA
1 stop23h 15m
ANA
Deal found 1/14$588
This FlightHub deal was found by Cheapflights users on 1/13. 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.
sáb. 1/313:45 pm
SEA
-
ITM
1 stop22h 45m
ANA
sáb. 2/74:50 pm
ITM
-
SEA
1 stop13h 30m
ANA
Deal found 1/13$589
This Booking.com deal was found by Cheapflights users on 1/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/303:45 pm
SEA
-
ITM
1 stop23h 25m
ANA
sáb. 2/144:50 pm
ITM
-
SEA
1 stop13h 30m
ANA
Deal found 1/13$592
This Booking.com deal was found by Cheapflights users on 1/13. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 1/303:45 pm
SEA
-
UKB
1 stop23h 15m
ANA
sáb. 2/147:05 am
UKB
-
SEA
1 stop23h 15m
ANA
Deal found 1/13$595
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.
jue. 4/307:05 am
SEA
-
KIX
1 stop15h 45m
United Airlines
lun. 5/118:30 am
KIX
-
SEA
1 stop21h 55m
United Airlines
Deal found 1/14$596
This United Airlines deal was found by Cheapflights users on 1/13. 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. 1/306:03 am
SEA
-
KIX
1 stop17h 37m
United Airlines
sáb. 2/146:35 pm
KIX
-
SEA
1 stop14h 06m
United Airlines
Deal found 1/13$597
This KAYAK 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 1/296:18 am
SEA
-
KIX
1 stop17h 22m
ANA
lun. 2/96:35 pm
KIX
-
SEA
1 stop16h 53m
ANA
Deal found 1/14$604
This United Airlines deal was found by Cheapflights users on 1/13. 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.
jue. 1/296:18 am
SEA
-
KIX
1 stop17h 22m
United Airlines
dom. 2/86:35 pm
KIX
-
SEA
1 stop19h 37m
United Airlines
Deal found 1/13$605
This Air Canada deal was found by Cheapflights users on 1/13. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 1/138:00 pm
SEA
-
ITM
2 stops29h 55m
Multiple Airlines
mar. 1/202:40 pm
ITM
-
SEA
2 stops21h 36m
Multiple Airlines
Deal found 1/13$606
This Air Canada deal was found by Cheapflights users on 1/12. 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 Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 1/188:00 pm
SEA
-
KIX
2 stops31h 35m
Multiple Airlines
mar. 1/278:00 am
KIX
-
SEA
2 stops28h 16m
Multiple Airlines
Deal found 1/12$608

Cheapflights Fare Finder

 
Customize your flight search to find flights from Washington 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 enero 14, 2026.
Use the filters below to find and compare flights from Washington to Osaka that are best for you.

Fly from

Washington

Fly to

Osaka

Route

Depart

Return

Price

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

sáb. 1/31

3:45 pm-8:00 am

1 stop23h 15m

Kobe

lun. 2/9

7:05 am-1:20 pm

1 stop23h 15m

$588

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

vie. 1/30

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

sáb. 2/7

6:35 pm-3:44 pm

1 stop14h 09m

$605

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

vie. 1/30

5:12 pm-4:40 pm

2 stops30h 28m

Osaka Kansai Intl

lun. 2/9

6:35 pm-9:12 pm

1 stop19h 37m

$609

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

vie. 1/30

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

mié. 2/25

6:35 pm-9:01 pm

1 stop19h 26m

$638

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

vie. 1/30

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

jue. 2/26

6:35 pm-9:01 pm

1 stop19h 26m

$638

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

sáb. 1/31

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

mar. 2/24

6:35 pm-11:30 pm

1 stop21h 55m

$638

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

sáb. 1/31

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

jue. 2/26

6:35 pm-6:26 pm

1 stop16h 51m

$638

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

sáb. 1/31

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

mié. 2/25

6:35 pm-12:59 am

1 stop23h 24m

$638

PortlandOsaka

PDX - KIX

PDXKIX

Portland

jue. 2/5

5:35 am-4:40 pm

1 stop18h 05m

Osaka Kansai Intl

jue. 2/12

6:45 am-2:48 pm

2 stops25h 03m

$649

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

sáb. 1/31

3:45 pm-8:00 am

1 stop23h 15m

Kobe

mié. 2/25

7:05 am-1:20 pm

1 stop23h 15m

$649

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/13

Showing 1-10 of 60 results
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Best time to book a flight from Washington to Osaka

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

What is the cheapest month to book a flight from State of Washington to Osaka?

Currently, January is the cheapest month in which you can book a flight from State of Washington to Osaka (average of $370). Flying from State of Washington to Osaka in June is currently the most expensive (average of $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.

Related info for your journey

Find useful and relevant information for your journey from Washington 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 State of Washington to Osaka?

    Airlines like ANA, United Airlines, and Japan Airlines fly from State of Washington to Osaka in about 14h 25m. The time it takes to get you to your destination can typically vary by up to 8h 50m. The distance between State of Washington and Osaka is about 4999 mi. This flight may include one or multiple stops.

  • What are the cheapest airlines to fly from State of Washington to Osaka one-way?

    $304 is the cheapest one-way deal found within the past few days, from Asiana Airlines. You may also be able to find cheap deals on Korean Air and Air Canada, with prices starting from $355 and $360, respectively.

  • What are the most popular routes from State of Washington to Osaka?

    Most travelers choose Seattle/Tacoma Intl - Osaka Kansai Intl, Seattle/Tacoma Intl - Osaka Itami or Seattle/Tacoma Intl - Kobe when deciding on the best route from State of Washington to Osaka.

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

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

  • How can I find direct flights from Washington to Osaka?

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

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

    Yes. Cheapflights offers flight deals from Washington 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 State of Washington to Osaka?

    Currently, January is the cheapest month in which you can book a flight from State of Washington to Osaka (average of $370). Flying from State of Washington to Osaka in June is currently the most expensive (average of $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?

Book flights to Osaka if you plan to visit one of these locations
Nara

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Alternative routes for Washington to Osaka

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Washington to Osaka

Discover the top 10 airlines that operate flights from Washington 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 enero 14, 2026.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$370Average$438FlexibilityNo cancel feeOn-time75%
Asiana AirlinesCheapest$595Average$756FlexibilityNo cancel feeOn-time76%
United AirlinesCheapest$647Average$983FlexibilityNo cancel feeOn-time69%
ANACheapest$650Average$803FlexibilityNo cancel feeOn-time80%
Korean AirCheapest$660Average$846FlexibilityNo cancel feeOn-time81%
Air CanadaCheapest$669Average$802FlexibilityNo cancel feeOn-time67%
Japan AirlinesCheapest$697Average$1,110FlexibilityNo cancel feeOn-time79%
STARLUX AirlinesCheapest$934Average$1,267FlexibilityNo cancel feeOn-timeN/A
EVA AirCheapest$975Average$1,218FlexibilityNo cancel feeOn-time74%
China AirlinesCheapest$1,056Average$1,167FlexibilityNo cancel feeOn-time70%

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