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$436+ Cheap flights from Osaka (OSA) to Seattle (SEA)

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 3/5. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — SEA
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
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Cheap flight deals from Osaka to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Osaka (OSA) to Seattle (SEA). 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$820
(Air Canada)

One-way from

$436
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$921
Provider with most accurate pricing for Osaka (OSA)-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Osaka (OSA)-Seattle/Tacoma Intl flights.
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From Osaka (OSA) to Seattle/Tacoma Intl
Search Deals
One-way flight from Osaka (OSA) to Seattle/Tacoma Intl
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($122 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from Osaka to Seattle

Cheapest flights from Osaka to Seattle
Explore the most affordable flight options available from Osaka to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 20, 2025.

This Air Canada deal was found by Cheapflights users on 2/19. 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.
Mon 5/126:05 pmKIX - SEA
1 stop16h 28mAir Canada
Thu 5/227:15 pmSEA - KIX
1 stop29h 10mAir Canada
Deal found 2/19$820
This oojo deal was found by Cheapflights users on 2/19. 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 3/42:00 pmKIX - SEA
1 stop18h 05mSTARLUX Airlines
Thu 3/612:05 amSEA - KIX
1 stop18h 05mSTARLUX Airlines
Deal found 2/19$863
This EVA Air deal was found by Cheapflights users on 2/20. 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 EVA Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/141:10 pmKIX - SEA
1 stop21h 40mEVA Air
Fri 7/111:10 amSEA - KIX
1 stop17h 00mEVA Air
Deal found 2/20$875
This Gotogate deal was found by Cheapflights users on 2/20. 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.
Thu 3/67:05 pmKIX - SEA
1 stop32h 50mAsiana Airlines
Sun 3/91:45 pmSEA - KIX
1 stop36h 00mAsiana Airlines
Deal found 2/20$880
This Trip.com deal was found by Cheapflights users on 2/20. 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.
Thu 3/612:45 pmKIX - SEA
1 stop22h 30mChina Airlines
Sat 3/812:10 amSEA - KIX
1 stop18h 25mChina Airlines
Deal found 2/20$893
This Gotogate deal was found by Cheapflights users on 2/18. 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.
Wed 3/510:05 amKIX - SEA
1 stop25h 05mMultiple Airlines
Sat 3/812:45 pmSEA - KIX
1 stop34h 05mMultiple Airlines
Deal found 2/18$918
This Trip.com deal was found by Cheapflights users on 2/20. 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 4/183:20 pmKIX - SEA
1 stop20h 00mPhilippine Airlines
Fri 4/2511:30 pmSEA - KIX
1 stop22h 50mPhilippine Airlines
Deal found 2/20$956
This Cheapflightsfares deal was found by Cheapflights users on 2/19. 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.
Mon 5/1211:10 pmKIX - SEA
2 stops25h 50mHainan Airlines
Thu 5/2211:00 amSEA - KIX
2 stops34h 25mHainan Airlines
Deal found 2/19$1,039
This Trip.com deal was found by Cheapflights users on 2/20. 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 8/137:05 amITM - SEA
2 stops28h 15mMultiple Airlines
Sun 8/241:30 pmSEA - ITM
1 stop14h 55mMultiple Airlines
Deal found 2/20$1,071
This Air Canada deal was found by Cheapflights users on 2/19. 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.
Mon 5/122:05 pmITM - SEA
2 stops14h 53mAir Canada
Thu 5/225:40 amSEA - ITM
2 stops21h 15mAir Canada
Deal found 2/19$1,155
This Hawaiian Airlines deal was found by Cheapflights users on 2/20. 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.
Sun 2/238:45 pmKIX - SEA
1 stop28h 09mHawaiian Airlines
Sat 3/226:40 pmSEA - KIX
1 stop32h 05mHawaiian Airlines
Deal found 2/20$1,238
This United deal was found by Cheapflights users on 2/19. 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/66:30 pmKIX - SEA
1 stop17h 08mUnited Airlines
Mon 3/103:01 pmSEA - KIX
2 stops33h 34mUnited Airlines
Deal found 2/19$1,342

Find flights from Osaka to Seattle within your budget

Customize your flight search to find flights from Osaka to Seattle 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 February 20, 2025.

Fly from

Osaka

Fly to

Seattle

Route

Depart

Return

Price

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 5/12

6:05 pm-6:33 pm

1 stop16h 28m

Seattle/Tacoma Intl

Thu 5/22

7:15 pm-4:25 pm

1 stop29h 10m

$820

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 3/4

2:00 pm-3:05 pm

1 stop18h 05m

Seattle/Tacoma Intl

Thu 3/6

12:05 am-11:10 am

1 stop18h 05m

$863

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 6/14

1:10 pm-6:50 pm

1 stop21h 40m

Seattle/Tacoma Intl

Fri 7/11

1:10 am-10:10 am

1 stop17h 00m

$875

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 3/6

7:05 pm-10:55 am

1 stop32h 50m

Seattle/Tacoma Intl

Sun 3/9

1:45 pm-5:45 pm

1 stop36h 00m

$880

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 3/6

12:45 pm-6:15 pm

1 stop22h 30m

Seattle/Tacoma Intl

Sat 3/8

12:10 am-11:35 am

1 stop18h 25m

$893

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 3/5

10:05 am-6:10 pm

1 stop25h 05m

Seattle/Tacoma Intl

Sat 3/8

12:45 pm-3:50 pm

1 stop34h 05m

$918

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 4/18

3:20 pm-7:20 pm

1 stop20h 00m

Seattle/Tacoma Intl

Fri 4/25

11:30 pm-2:20 pm

1 stop22h 50m

$956

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 5/12

11:10 pm-9:00 am

2 stops25h 50m

Seattle/Tacoma Intl

Thu 5/22

11:00 am-1:25 pm

2 stops34h 25m

$1,039

OsakaSeattle

ITM - SEA

ITMSEA

Osaka Itami

Wed 8/13

7:05 am-7:20 pm

2 stops28h 15m

Seattle/Tacoma Intl

Sun 8/24

1:30 pm-8:25 pm

1 stop14h 55m

$1,071

OsakaSeattle

ITM - SEA

ITMSEA

Osaka Itami

Mon 5/12

2:05 pm-12:58 pm

2 stops14h 53m

Seattle/Tacoma Intl

Thu 5/22

5:40 am-6:55 pm

2 stops21h 15m

$1,155

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

Showing 1-10 of 34 results
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Compare providers for flights from Osaka to Seattle

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 Osaka to Seattle in February.
ProviderPrice AccuracyTrust Score*
FlightHubPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 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 Osaka-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Osaka-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Osaka-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Osaka-Seattle 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 Osaka-Seattle 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 Osaka to Seattle

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

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

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

Currently, January is the cheapest month in which you can book a flight from Osaka to Seattle (average of $238). Flying from Osaka to Seattle in July is currently the most expensive (average of $411). 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 OSA to SEA?

Find hourly flight availability from Osaka to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 20, 2025.

A simple way to save on the total cost of your ticket is to fly from Osaka to Seattle in the morning. If you’re flexible enough to do this you can expect to save up to 9% on your trip compared to booking a flight in the afternoon.

Rainfall in Seattle by month

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

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

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

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated February 20, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air and ANA from Osaka to Seattle by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Boarding

9.1

Overall

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

STARLUX Airlines
9.1
Wonderful
140 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Boarding

9.1

Overall

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

EVA Air
8.4
Very good
1,200 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Boarding

9.1

Overall

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

ANA
8.4
Very good
842 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Boarding

9.1

Overall

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Boarding

9.1

Overall

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

China Airlines
8.2
Very good
727 reviews
STARLUX Airlines
9.1
Wonderful
140 reviews

Entertainment

9.1

Boarding

9.1

Overall

9.1

Comfort

9.0

Food

9.0

Crew

9.3

Reviews

1 / 5

10.0
Excellent

Andrew,Jan 2025

LAX - TPE

Crew were attentive from start to finish. Each meal was amazing. IFE screen was huge and had quite a bit of western movies, however the tv shows were lacking.

Related info for your journey

Find useful and relevant information for your journey from Osaka to Seattle. 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 into for flights to Seattle from Osaka?

    If you book a flight to Seattle from Osaka, you will be flying to Seattle/Tacoma Intl, which is the city’s only airport. Seattle/Tacoma Intl (SEA) is located 11.4 mi from the center of Seattle. There are 0 flights from Osaka to Seattle/Tacoma Intl per day from 3 different airlines.

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

    Air Canada, at $820, was found to be the cheapest airline from Osaka to Seattle.Alternate airlines to your destination round-trip include STARLUX Airlines and EVA Air. Users have found that Air Canada is 21% cheaper than the other options available to this destination.

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

    For one-way options, check prices for Philippine Airlines. According to our data, you can fly for as low as $508. Users have also found prices from $517 and $527 on China Airlines and EVA Air, respectively.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Osaka to Seattle (average of $238). Flying from Osaka to Seattle in July is currently the most expensive (average of $411). 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
SeaTac
Tukwila
Renton
Tacoma
Lacey
Ocean Shores
Leavenworth
Olympia
Federal Way
Centralia
Marysville
Cle Elum
Mukilteo
Aberdeen
Lakewood
Issaquah
Shoreline
Lynnwood
Shelton
Silverdale

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Osaka to Seattle

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

Top 3 airlines flying from Osaka to Seattle

Discover the top 3 airlines that operate flights from Osaka to Seattle. 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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$838Average$1,367FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$852Average$926FlexibilityNo cancel feeOn-time76%
ANACheapest$1,397Average$1,863FlexibilityNo cancel feeOn-time80%
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