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Osaka

$325+ 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 1/15. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSA
dic. 26 — ene. 21
vie. 12/26
vie. 1/2
1 adult, Economy
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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 noviembre 26, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 11/24. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/259:30 pmSEA - KIX
1 stop29h 05mPhilippine Airlines
mié. 12/310:15 amKIX - SEA
1 stop25h 25mPhilippine Airlines
Deal found 11/24$665
This FlightHub deal was found by Cheapflights users on 11/26. 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.
lun. 12/293:40 pmSEA - ITM
1 stop22h 50mANA
mié. 2/186:00 pmITM - SEA
1 stop12h 20mANA
Deal found 11/26$673
This FlightHub deal was found by Cheapflights users on 11/26. 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.
lun. 12/293:40 pmSEA - UKB
1 stop23h 20mANA
mié. 2/189:15 pmUKB - SEA
1 stop33h 05mANA
Deal found 11/26$673
This FlightHub deal was found by Cheapflights users on 11/26. 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.
lun. 12/293:40 pmSEA - KIX
1 stop13h 40mANA
mié. 2/185:35 pmKIX - SEA
1 stop12h 45mANA
Deal found 11/26$676
This Gotogate deal was found by Cheapflights users on 11/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/3012:10 amSEA - KIX
1 stop24h 55mAsiana Airlines
dom. 12/219:00 amKIX - SEA
1 stop21h 55mAsiana Airlines
Deal found 11/26$677
This Asiana Airlines deal was found by Cheapflights users on 11/24. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/2412:10 amSEA - KIX
1 stop24h 55mAsiana Airlines
mié. 12/37:25 pmKIX - SEA
1 stop35h 30mAsiana Airlines
Deal found 11/24$691
This Air Canada deal was found by Cheapflights users on 11/26. 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.
jue. 11/277:00 pmPDX - KIX
1 stop29h 40mMultiple Airlines
vie. 12/1210:50 amKIX - PDX
2 stops20h 50mMultiple Airlines
Deal found 11/26$693
This United Airlines deal was found by Cheapflights users on 11/26. 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.
lun. 12/291:35 pmSEA - KIX
1 stop34h 05mUnited Airlines
mié. 2/188:20 amKIX - SEA
3 stops29h 41mUnited Airlines
Deal found 11/26$697
This Gotogate deal was found by Cheapflights users on 11/26. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/18:00 pmSEA - KIX
2 stops43h 45mMultiple Airlines
dom. 12/218:25 pmKIX - SEA
2 stops35h 06mMultiple Airlines
Deal found 11/26$707
This CheapOair deal was found by Cheapflights users on 11/25. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/258:00 pmSEA - KIX
1 stop28h 40mMultiple Airlines
mié. 12/38:00 amKIX - SEA
2 stops42h 31mMultiple Airlines
Deal found 11/25$716
This FlightHub deal was found by Cheapflights users on 11/24. 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.
lun. 12/16:00 amPDX - ITM
2 stops20h 10mANA
mar. 12/238:00 amITM - PDX
2 stops23h 46mANA
Deal found 11/24$721
This FlightHub deal was found by Cheapflights users on 11/25. 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.
mié. 12/107:00 amSEA - KIX
1 stop16h 40mANA
jue. 12/185:35 pmKIX - SEA
1 stop12h 45mANA
Deal found 11/25$721

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 noviembre 26, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$607
(Air Canada)

One-way from

$325
(Air Canada)

Popular in

December

Cheapest in

September

Average price

$796
Provider with most accurate pricing for Seattle/Tacoma Intl-Osaka (OSA) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Seattle/Tacoma Intl-Osaka (OSA) flights.
Search Deals
From Washington to Osaka (OSA)
Search Deals
One-way flight from Washington to Osaka (OSA)
Search Deals
Highest demand for flights based on searches. 5% potential increase in price ($51 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($33 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

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 noviembre 26, 2025.
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

jue. 2/26

3:45 pm-8:00 am

1 stop23h 15m

Kobe

sáb. 3/7

7:05 am-1:20 pm

1 stop23h 15m

$627

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

mar. 1/13

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

mar. 1/20

2:40 pm-9:55 am

1 stop12h 15m

$632

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

sáb. 2/28

3:45 pm-8:00 am

1 stop23h 15m

Kobe

dom. 3/15

7:05 am-2:20 pm

1 stop23h 15m

$638

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

sáb. 1/17

3:45 pm-8:00 am

1 stop23h 15m

Kobe

dom. 2/1

7:05 am-1:20 pm

1 stop23h 15m

$638

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

sáb. 1/10

3:45 pm-8:00 am

1 stop23h 15m

Kobe

sáb. 1/17

9:15 pm-1:20 pm

1 stop33h 05m

$640

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

vie. 2/27

3:45 pm-1:10 pm

1 stop28h 25m

Osaka Itami

jue. 3/12

3:00 pm-2:20 pm

1 stop15h 20m

$650

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

vie. 1/30

3:45 pm-8:10 am

1 stop23h 25m

Osaka Itami

mar. 2/10

2:00 pm-1:20 pm

1 stop16h 20m

$650

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

vie. 1/30

3:45 pm-8:00 am

1 stop23h 15m

Kobe

mar. 2/10

9:15 pm-1:20 pm

1 stop33h 05m

$650

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

jue. 2/26

3:45 pm-7:25 pm

1 stop34h 40m

Osaka Kansai Intl

dom. 3/15

8:20 am-11:16 pm

2 stops30h 56m

$658

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

mié. 2/25

5:05 am-4:40 pm

1 stop18h 35m

Osaka Kansai Intl

sáb. 3/14

8:20 am-2:20 pm

1 stop22h 00m

$658

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/26

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 July is currently the most expensive (average of $763). 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 WA to OSA?

Find hourly flight availability from Washington to Osaka. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated noviembre 26, 2025.

A simple way to save on the total cost of your ticket is to fly from State of Washington to Osaka in the evening. If you’re flexible enough to do this you can expect to save up to 42% on your trip compared to booking a flight in the morning.

What is the cheapest day to fly from State of Washington to Osaka?

Use this chart to determine the cheapest time to fly round-trip from Washington to Osaka. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their State of Washington to Osaka flight should consider departing on Thursday at noon when fares are most often at their lowest. Saturday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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, Japan Airlines, and United 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 20h 15m. 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?

    $333 is the cheapest one-way deal found within the past few days, from Japan Airlines. You may also be able to find cheap deals on Philippine Airlines and ANA, with prices starting from $334 and $336, 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 July is currently the most expensive (average of $763). 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
Nishinomiya

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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 9 airlines flying from Washington to Osaka

Discover the top 9 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 noviembre 26, 2025.
AirlineCheapestAverageFlexibilityOn-time
Alaska AirlinesCheapest$370Average$438FlexibilityNo cancel feeOn-time75%
Asiana AirlinesCheapest$610Average$783FlexibilityNo cancel feeOn-time76%
ANACheapest$658Average$842FlexibilityNo cancel feeOn-time80%
Air CanadaCheapest$669Average$802FlexibilityNo cancel feeOn-time67%
Japan AirlinesCheapest$697Average$1,128FlexibilityNo cancel feeOn-time79%
Korean AirCheapest$716Average$984FlexibilityNo cancel feeOn-time81%
United AirlinesCheapest$734Average$996FlexibilityNo cancel feeOn-time69%
STARLUX AirlinesCheapest$975Average$1,267FlexibilityNo cancel feeOn-timeN/A
China AirlinesCheapest$1,056Average$1,167FlexibilityNo cancel feeOn-time70%

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