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$341+ Cheap flights from Seattle (SEA) 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 2/4. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSA
ene. 22 — ene. 291
mié. 1/22
mié. 1/29
1 adult, Economy
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The best prices from Seattle/Tacoma Intl to Osaka are usually found in February or January, booked 88 days in advance, depart on a Tuesday or Saturday and return on a Wednesday

Cheap flight deals from Seattle to Osaka

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) 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 enero 17, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$633
(Mytrip)

One-way from

$341
(oojo)

Popular in

December

Cheapest in

February

Average price

$1,008
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 Seattle/Tacoma Intl to Osaka (OSA)
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One-way flight from Seattle/Tacoma Intl to Osaka (OSA)
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High demand for flights, 9% potential price rise
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Best time to find cheap flights, 4% potential price drop
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Average for round-trip flights in January 2025
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Find flight deals from Seattle to Osaka

Cheapest flights from Seattle to Osaka
Explore the most affordable flight options available from Seattle to Osaka. Find the lowest fares from popular airlines and budget airlines, with prices last updated on enero 17, 2025.

This Mytrip deal was found by Cheapflights users on 1/16. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/1912:45 pmSEA - KIX
1 stop34h 05mAsiana Airlines
mié. 2/2610:50 amKIX - SEA
1 stop17h 05mAsiana Airlines
Deal found 1/16$633
This Gotogate 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 2/163:45 pmSEA - KIX
1 stop24h 05mANA
mié. 2/2611:05 amKIX - SEA
1 stop19h 15mANA
Deal found 1/14$712
This Kiwi.com deal was found by Cheapflights users on 1/15. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 1/281:58 pmSEA - KIX
1 stop35h 52mMultiple Airlines
jue. 2/67:30 amKIX - SEA
2 stops22h 07mMultiple Airlines
Deal found 1/15$719
This Gotogate deal was found by Cheapflights users on 1/15. 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.
mié. 4/304:40 pmSEA - UKB
1 stop23h 10mANA
mié. 5/147:05 amUKB - SEA
1 stop23h 20mANA
Deal found 1/15$743
This Gotogate deal was found by Cheapflights users on 1/16. 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.
jue. 9/188:30 amSEA - ITM
2 stops19h 15mJapan Airlines
jue. 11/62:50 pmITM - SEA
1 stop12h 00mJapan Airlines
Deal found 1/16$747
This Cheapflightsfares deal was found by Cheapflights users on 1/16. 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.
mié. 4/236:05 amSEA - KIX
1 stop20h 50mJapan Airlines
mié. 5/76:40 amKIX - SEA
2 stops26h 00mJapan Airlines
Deal found 1/16$757
This American Airlines deal was found by Cheapflights users on 1/16. 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.
mié. 2/196:03 amSEA - ITM
2 stops20h 52mAmerican Airlines
mié. 2/262:50 pmITM - SEA
1 stop12h 05mAmerican Airlines
Deal found 1/16$761
This American Airlines deal was found by Cheapflights users on 1/15. 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.
mié. 2/196:03 amSEA - KIX
1 stop19h 47mAmerican Airlines
mié. 2/265:50 pmKIX - SEA
2 stops19h 15mAmerican Airlines
Deal found 1/15$766
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.
mar. 10/288:45 amSEA - KIX
1 stop15h 50mUnited Airlines
vie. 11/286:30 pmKIX - SEA
1 stop13h 55mUnited Airlines
Deal found 1/14$773
This Expedia deal was found by Cheapflights users on 1/16. 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. 11/19:25 pmSEA - ITM
2 stops30h 25mMultiple Airlines
mié. 11/192:50 pmITM - SEA
1 stop12h 00mMultiple Airlines
Deal found 1/16$777
This lol.travel deal was found by Cheapflights users on 1/16. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 2/193:45 pmSEA - ITM
1 stop22h 45mANA
mié. 2/266:00 pmITM - SEA
1 stop12h 20mANA
Deal found 1/16$828
This United Airlines deal was found by Cheapflights users on 1/16. 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. 4/285:15 amSEA - ITM
2 stops19h 50mUnited Airlines
vie. 5/912:00 pmITM - SEA
2 stops17h 42mUnited Airlines
Deal found 1/16$881

Find flights from Seattle to Osaka within your budget

Customize your flight search to find flights from Seattle 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 17, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

mié. 2/19

12:45 pm-3:50 pm

1 stop34h 05m

Osaka Kansai Intl

mié. 2/26

10:50 am-10:55 am

1 stop17h 05m

$633

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

dom. 2/16

3:45 pm-8:50 am

1 stop24h 05m

Osaka Kansai Intl

mié. 2/26

11:05 am-1:20 pm

1 stop19h 15m

$712

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

mar. 1/28

1:58 pm-6:50 pm

1 stop35h 52m

Osaka Kansai Intl

jue. 2/6

7:30 am-12:37 pm

2 stops22h 07m

$719

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

mié. 2/19

3:45 pm-8:10 am

1 stop23h 25m

Osaka Itami

mié. 2/26

1:00 pm-1:20 pm

1 stop17h 20m

$736

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

dom. 4/27

1:30 pm-7:50 pm

1 stop14h 20m

Osaka Itami

vie. 5/9

2:35 pm-10:25 am

1 stop11h 50m

$752

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

mié. 4/23

6:05 am-6:55 pm

1 stop20h 50m

Osaka Kansai Intl

mié. 5/7

6:40 am-4:40 pm

2 stops26h 00m

$757

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

mié. 2/19

6:03 am-7:55 pm

2 stops20h 52m

Osaka Itami

mié. 2/26

2:50 pm-9:55 am

1 stop12h 05m

$761

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

mié. 2/19

6:03 am-6:50 pm

1 stop19h 47m

Osaka Kansai Intl

mié. 2/26

5:50 pm-8:05 pm

2 stops19h 15m

$766

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

lun. 4/21

5:15 am-2:50 pm

1 stop17h 35m

Osaka Kansai Intl

vie. 5/2

4:50 pm-9:28 pm

1 stop20h 38m

$773

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

lun. 3/3

3:45 pm-8:00 am

1 stop23h 15m

Kobe

lun. 3/10

9:05 pm-9:15 pm

2 stops40h 10m

$791

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/15

Showing 1-10 of 37 results
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Compare providers for flights from Seattle 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 Seattle to Osaka in January.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*1 star
oojoPrice Accuracy3 starsTrust Score*2 stars

*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 Seattle-Osaka flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Seattle-Osaka flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Seattle-Osaka flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Seattle-Osaka flights, Cheapflights users trust AranGrant the most. AranGrant 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 Seattle-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 Seattle to Osaka

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

Get recent, data-driven insights about flights from Seattle to Osaka including ideal travel times, pricing trends, and more.

How far ahead should I book a flight from Seattle to Osaka?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Osaka. Price data was last updated on January 10, 2025.

The price you pay for your flight from Seattle to Osaka may vary depending on when you book. For the best chance of a lower fare, look to book 88 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

What is the cheapest month to book a flight from Seattle to Osaka?

Currently, November is the cheapest month in which you can book a flight from Seattle to Osaka (average of $950). Flying from Seattle to Osaka in December is currently the most expensive (average of $1,366). 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 SEA to OSA?

Find hourly flight availability from Seattle 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 enero 17, 2025.

Unlike in the afternoon, when flights are generally more expensive, you can save up to 32% on flights from Seattle to Osaka by exploring options for tickets in the evening.

What is the cheapest day to fly from Seattle to Osaka?

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

Travelers seeking maximum savings on their Seattle to Osaka flight should consider departing on Tuesday evenings 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.

Rainfall in Osaka by month

Plan your trip to Osaka by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Osaka ranges from 1.6 - 7.9 inches per month. June is typically the wettest month, when rainfall can reach 7.9 in. January is typically the driest time to visit Osaka when rainfall is around 1.6 in.

Temperature in Osaka by month

Plan your trip to Osaka by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Osaka, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 84.2 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 42.8 F).

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 enero 17, 2025.
Read through reviews of airlines operating flights from Seattle to Osaka, such as ANA, United Airlines and American Airlines. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
134 reviews

Food

9.0

Entertainment

9.1

Crew

9.3

Boarding

9.1

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

STARLUX Airlines
9.1
Wonderful
134 reviews
STARLUX Airlines
9.1
Wonderful
134 reviews

Food

9.0

Entertainment

9.1

Crew

9.3

Boarding

9.1

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

EVA Air
8.4
Very good
1,248 reviews
STARLUX Airlines
9.1
Wonderful
134 reviews

Food

9.0

Entertainment

9.1

Crew

9.3

Boarding

9.1

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

ANA
8.4
Very good
847 reviews
STARLUX Airlines
9.1
Wonderful
134 reviews

Food

9.0

Entertainment

9.1

Crew

9.3

Boarding

9.1

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

Japan Airlines
8.3
Very good
1,448 reviews
STARLUX Airlines
9.1
Wonderful
134 reviews

Food

9.0

Entertainment

9.1

Crew

9.3

Boarding

9.1

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

China Airlines
8.2
Very good
737 reviews
STARLUX Airlines
9.1
Wonderful
134 reviews

Food

9.0

Entertainment

9.1

Crew

9.3

Boarding

9.1

Overall

9.1

Comfort

9.0

Reviews

1 / 4

Issuing boarding pass takes too long. Either not enough people to help or the process is just way too slow or long. I tried many times to contact a representative on the phone, no one is available to take your call. Our last flight was cancelled and we were given another flight the next day and Starlux would not guarantee a free hotel accommodation to help my family.

Related info for your journey

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

  • What airport do you fly from for flights from Seattle to Osaka?

    Most people fly from Seattle/Tacoma Intl (SEA) if they book a flight from Seattle to Osaka. On average, Seattle/Tacoma Intl has 0 outbound flights to Osaka per day from 10 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • What are the cheapest airlines flying from Seattle to Osaka round-trip?

    Asiana Airlines, at $633, was found to be the cheapest airline from Seattle to Osaka.Alternate airlines to your destination round-trip include ANA and American Airlines. These flights start at 42% lower than the current average price 3 months from now.

  • What are the cheapest airlines to fly from Seattle to Osaka one-way?

    The cheapest airlines for a one-way flight from Seattle to Osaka are Asiana Airlines ($341), Japan Airlines ($448), and American Airlines ($457).

  • What are the most popular routes from Seattle to Osaka?

    While some choose either Seattle/Tacoma Intl - Osaka Itami or Seattle/Tacoma Intl - Kobe, Seattle/Tacoma Intl - Osaka Kansai Intl is the most popular route from Seattle to Osaka.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Seattle 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 Seattle to Osaka?

    Currently, November is the cheapest month in which you can book a flight from Seattle to Osaka (average of $950). Flying from Seattle to Osaka in December is currently the most expensive (average of $1,366). 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 Seattle?

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

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Alternative routes for Seattle to Osaka

See prices for flight routes from nearby airports that may be better suited for you.
Seattle to Kansai Intl flights
Seattle to Itami flights
Portland to Kansai Intl flights
Portland to Itami flights
Pasco to Kansai Intl flights

Top 10 airlines flying from Seattle to Osaka

Discover the top 10 airlines that operate flights from Seattle 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 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$705Average$1,061FlexibilityNo cancel feeOn-time76%
China EasternCheapest$719Average$756FlexibilityNo cancel feeOn-time62%
ANACheapest$781Average$1,460FlexibilityNo cancel feeOn-time80%
Japan AirlinesCheapest$850Average$1,432FlexibilityNo cancel feeOn-time79%
China AirlinesCheapest$852Average$1,017FlexibilityNo cancel feeOn-time70%
STARLUX AirlinesCheapest$918Average$1,030FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$930Average$1,058FlexibilityNo cancel feeOn-time67%
Korean AirCheapest$975Average$1,344FlexibilityNo cancel feeOn-time81%
Hawaiian AirlinesCheapest$997Average$1,070FlexibilityNo cancel feeOn-time85%
EVA AirCheapest$1,033Average$1,176FlexibilityNo cancel feeOn-time74%
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