HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Osaka

$317+ 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 1/11. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — OSA
Dec 7 — Dec 141
Sat 12/7
Sat 12/14
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Seattle to Osaka with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Seattle/Tacoma Intl to Osaka are usually found in August or September, booked 4 days in advance, depart on a Monday 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 December 2, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Popular in

December

Cheapest in

August

Round-trip from

$824
(oojo)

One-way from

$317
(Kiwi.com)
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
High demand for flights, 36% potential price rise
Search Deals
Best time to find cheap flights, 11% potential price drop
Search Deals
From Seattle/Tacoma Intl to Osaka (OSA)
Search Deals
One-way flight from Seattle/Tacoma Intl to Osaka (OSA)
Search Deals

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 December 2, 2024.

This ANA deal was found by Cheapflights users on 12/2. 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 ANA is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/273:40 pmSEA - ITM
1 stop22h 50mANA
Sat 5/316:00 pmITM - SEA
1 stop12h 25mANA
Deal found 12/2$1,074
This Mytrip deal was found by Cheapflights users on 12/2. 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.
Fri 12/65:15 amSEA - KIX
2 stops23h 40mMultiple Airlines
Sun 12/83:15 pmKIX - SEA
1 stop19h 55mMultiple Airlines
Deal found 12/2$1,133
This FlightHub deal was found by Cheapflights users on 12/2. 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.
Wed 12/253:40 pmSEA - KIX
1 stop13h 35mANA
Sat 5/316:35 pmKIX - SEA
1 stop11h 50mANA
Deal found 12/2$1,139
This United Airlines deal was found by Cheapflights users on 12/2. 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.
Thu 12/267:15 amSEA - KIX
1 stop16h 20mUnited Airlines
Sun 6/14:50 pmKIX - SEA
1 stop20h 39mUnited Airlines
Deal found 12/2$1,155
This Hawaiian Airlines deal was found by Cheapflights users on 12/1. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/107:00 amSEA - KIX
1 stop18h 45mHawaiian Airlines
Wed 4/28:45 pmKIX - SEA
1 stop16h 40mHawaiian Airlines
Deal found 12/1$1,193
This Mytrip deal was found by Cheapflights users on 12/2. 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.
Sat 12/75:15 amSEA - ITM
2 stops21h 40mMultiple Airlines
Sat 12/142:50 pmITM - SEA
3 stops22h 36mMultiple Airlines
Deal found 12/2$1,280
This FlightHub deal was found by Cheapflights users on 12/1. 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 12/912:45 pmSEA - KIX
1 stop27h 55mAsiana Airlines
Thu 4/310:50 amKIX - SEA
1 stop17h 45mAsiana Airlines
Deal found 12/1$1,303
This FlightHub deal was found by Cheapflights users on 12/1. 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.
Tue 12/105:15 amSEA - UKB
2 stops23h 30mANA
Sat 5/319:15 pmUKB - SEA
1 stop33h 10mANA
Deal found 12/1$1,324
This lol.travel deal was found by Cheapflights users on 12/2. 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.
Sat 12/711:00 amSEA - KIX
1 stop17h 00mKorean Air
Sat 12/149:15 amKIX - SEA
1 stop16h 45mKorean Air
Deal found 12/2$1,355
This Delta deal was found by Cheapflights users on 12/1. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/711:00 amSEA - KIX
1 stop17h 00mDelta
Sun 3/3012:35 pmKIX - SEA
1 stop14h 15mDelta
Deal found 12/1$1,418
This KAYAK deal was found by Cheapflights users on 12/1. 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.
Tue 12/3110:40 amSEA - KIX
1 stop39h 50mHainan Airlines
Tue 1/711:10 pmKIX - SEA
2 stops49h 50mHainan Airlines
Deal found 12/1$1,437
This Gurufare deal was found by Cheapflights users on 12/2. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/1012:10 amSEA - KIX
1 stop16h 45mEVA Air
Tue 1/1412:55 pmKIX - SEA
1 stop22h 15mEVA Air
Deal found 12/2$1,504

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 2,650,959 searches. Data last updated December 2, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 3/11

1:45 pm-3:50 pm

1 stop34h 05m

Osaka Kansai Intl

Mon 3/17

10:50 am-11:55 am

1 stop17h 05m

$824

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 1/20

12:30 pm-8:40 am

1 stop27h 10m

Osaka Kansai Intl

Thu 1/23

7:30 am-12:37 pm

2 stops22h 07m

$829

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 4/20

11:55 pm-7:10 pm

1 stop27h 15m

Osaka Kansai Intl

Fri 4/25

9:55 am-7:35 pm

1 stop25h 40m

$855

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 3/10

1:10 am-11:35 am

1 stop18h 25m

Osaka Kansai Intl

Mon 3/17

7:00 pm-7:15 pm

1 stop16h 15m

$880

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 3/3

5:59 pm-12:10 pm

2 stops49h 11m

Osaka Kansai Intl

Mon 3/17

9:30 am-5:00 pm

2 stops23h 30m

$882

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 3/8

11:00 am-10:45 am

1 stop30h 45m

Osaka Kansai Intl

Sat 3/22

9:15 am-10:00 am

1 stop16h 45m

$921

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Thu 5/8

1:15 am-12:05 pm

1 stop18h 50m

Osaka Kansai Intl

Fri 5/30

1:15 pm-3:50 pm

1 stop18h 35m

$927

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Mon 1/20

12:30 pm-6:55 pm

1 stop13h 25m

Osaka Itami

Thu 1/23

9:00 am-12:37 pm

2 stops20h 37m

$933

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Thu 1/30

12:30 pm-8:05 pm

1 stop14h 35m

Osaka Itami

Tue 2/11

11:30 am-9:55 am

1 stop15h 25m

$946

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 1/14

10:41 am-9:00 pm

1 stop17h 19m

Osaka Kansai Intl

Tue 1/21

9:15 am-1:19 pm

1 stop21h 04m

$972

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/2

Showing 1-10 of 44 results
1
2
3
...
5

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 December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
AranGrantPrice Accuracy3 starsTrust Score*2 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars
KAYAKPrice Accuracy1 starTrust Score*1 star
oojoPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust 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 Seattle-Osaka flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Seattle-Osaka flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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 November 22, 2024.

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 4 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 June is currently the most expensive (average of $1,267). 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 December 2, 2024.

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 November 24, 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. Sunday 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 December 2, 2024.
Read through reviews of airlines operating flights from Seattle to Osaka, such as Asiana Airlines, China Airlines and EVA Air. 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
128 reviews

Comfort

9.0

Boarding

9.1

Crew

9.3

Entertainment

9.1

Food

9.0

Overall

9.1

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

STARLUX Airlines
9.1
Wonderful
128 reviews
STARLUX Airlines
9.1
Wonderful
128 reviews

Comfort

9.0

Boarding

9.1

Crew

9.3

Entertainment

9.1

Food

9.0

Overall

9.1

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

Korean Air
8.5
Very good
1,019 reviews
STARLUX Airlines
9.1
Wonderful
128 reviews

Comfort

9.0

Boarding

9.1

Crew

9.3

Entertainment

9.1

Food

9.0

Overall

9.1

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

EVA Air
8.4
Very good
1,293 reviews
STARLUX Airlines
9.1
Wonderful
128 reviews

Comfort

9.0

Boarding

9.1

Crew

9.3

Entertainment

9.1

Food

9.0

Overall

9.1

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

ANA
8.4
Very good
830 reviews
STARLUX Airlines
9.1
Wonderful
128 reviews

Comfort

9.0

Boarding

9.1

Crew

9.3

Entertainment

9.1

Food

9.0

Overall

9.1

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

Japan Airlines
8.3
Very good
1,450 reviews
STARLUX Airlines
9.1
Wonderful
128 reviews

Comfort

9.0

Boarding

9.1

Crew

9.3

Entertainment

9.1

Food

9.0

Overall

9.1

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

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 $824, was found to be the cheapest airline from Seattle to Osaka.Alternate airlines to your destination round-trip include Philippine Airlines and China Airlines. These flights start at 28% 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 ($461), ANA ($569), and STARLUX Airlines ($701).

  • 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 June is currently the most expensive (average of $1,267). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

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 2,650,959 searches. Data last updated December 2, 2024.
AirlineCheapestAverageFlexibilityOn-time
China EasternCheapest$719Average$756FlexibilityNo cancel feeOn-time62%
Asiana AirlinesCheapest$838Average$1,096FlexibilityNo cancel feeOn-time76%
Japan AirlinesCheapest$850Average$1,465FlexibilityNo cancel feeOn-time79%
China AirlinesCheapest$852Average$1,017FlexibilityNo cancel feeOn-time70%
Air CanadaCheapest$890Average$1,058FlexibilityNo cancel feeOn-time67%
STARLUX AirlinesCheapest$918Average$1,030FlexibilityNo cancel feeOn-timeN/A
Hawaiian AirlinesCheapest$997Average$1,071FlexibilityNo cancel feeOn-time85%
ANACheapest$1,030Average$1,588FlexibilityNo cancel feeOn-time80%
EVA AirCheapest$1,070Average$1,176FlexibilityNo cancel feeOn-time74%
Korean AirCheapest$1,170Average$1,431FlexibilityNo cancel feeOn-time81%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
View all available airlines