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$417+ Cheap flights from Kansai Intl (KIX) 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 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
KIX — SEA
May 6 — May 131
Tue 5/6
Tue 5/13
1 adult, Economy
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Cheap flight deals from Kansai Intl to Seattle

Discover tips and strategies to find the most affordable flight options for your journey from Kansai Intl (KIX) 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 May 1, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$778
(Kiwi.com)

One-way from

$417
(Kiwi.com)

Popular in

July

Cheapest in

February

Average price

$918
Provider with most accurate pricing for Osaka Kansai Intl-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Osaka Kansai Intl-Seattle/Tacoma Intl flights.
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From Osaka Kansai Intl to Seattle/Tacoma Intl
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One-way flight from Osaka Kansai Intl to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 22% potential increase in price ($293 potential increase over avg. RT price).
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Cheapest flight prices on average. 5% potential price decrease ($52 potential savings vs. average RT price).
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Average for round-trip flights in May 2025
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Find flight deals from Kansai Intl to Seattle

Cheapest flights from Kansai Intl to Seattle
Explore the most affordable flight options available from Kansai Intl to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on May 1, 2025.

This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Wed 5/2811:35 amKIX - SEA
1 stop15h 05mMultiple Airlines
Wed 6/41:20 pmSEA - KIX
1 stop17h 30mMultiple Airlines
Deal found 4/29$778
This Priceline deal was found by Cheapflights users on 4/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/86:05 pmKIX - SEA
1 stop20h 11mAir Canada
Sat 7/262:55 pmSEA - KIX
1 stop33h 30mAir Canada
Deal found 4/30$901
This oojo deal was found by Cheapflights users on 4/30. 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 11/116:00 pmKIX - SEA
1 stop16h 40mEVA Air
Tue 11/1111:30 pmSEA - KIX
1 stop24h 15mEVA Air
Deal found 4/30$915
This FlightHub deal was found by Cheapflights users on 4/29. 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 5/281:25 pmKIX - SEA
1 stop18h 45mSTARLUX Airlines
Tue 6/31:15 amSEA - KIX
1 stop19h 00mSTARLUX Airlines
Deal found 4/29$942
This Philippine Airlines deal was found by Cheapflights users on 4/30. 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 Philippine Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/203:20 pmKIX - SEA
1 stop19h 55mPhilippine Airlines
Wed 9/311:35 pmSEA - KIX
1 stop22h 45mPhilippine Airlines
Deal found 4/30$1,101
This FlightHub deal was found by Cheapflights users on 4/30. 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.
Thu 8/2110:50 amKIX - SEA
1 stop17h 55mAsiana Airlines
Mon 9/82:15 pmSEA - KIX
1 stop27h 25mAsiana Airlines
Deal found 4/30$1,112
This Delta deal was found by Cheapflights users on 4/30. 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.
Sun 8/312:35 pmKIX - SEA
2 stops25h 47mDelta
Sun 8/241:05 pmSEA - KIX
1 stop15h 55mDelta
Deal found 4/30$1,402
This Air France deal was found by Cheapflights users on 4/30. 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 France is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/812:00 pmKIX - SEA
2 stops44h 54mKLM
Sat 7/268:25 pmSEA - KIX
2 stops45h 55mKLM
Deal found 4/30$1,644
This Gurufare deal was found by Cheapflights users on 4/30. 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.
Mon 8/49:10 amKIX - SEA
2 stops25h 55mCathay Pacific
Sat 8/98:26 pmSEA - KIX
3 stops26h 29mCathay Pacific
Deal found 4/30$1,784
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 5/144:50 pmKIX - SEA
3 stops44h 12mUnited Airlines
Sat 5/175:13 pmSEA - KIX
2 stops29h 37mUnited Airlines
Deal found 4/30$1,813
This Qatar Airways deal was found by Cheapflights users on 4/30. 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 Qatar Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/149:55 amKIX - SEA
2 stops42h 50mQatar Airways
Sat 7/1211:31 amSEA - KIX
2 stops37h 54mQatar Airways
Deal found 4/30$2,305

Cheapflights Fare Finder

Customize your flight search to find flights from Kansai Intl 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 May 1, 2025.
Use the filters below to find and compare flights from Osaka Kansai Intl Airport to Seattle that are best for you.

Fly from

Kansai Intl

Fly to

Seattle

Route

Depart

Return

Price

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 5/28

11:35 am-10:40 am

1 stop15h 05m

Seattle/Tacoma Intl

Wed 6/4

1:20 pm-10:50 pm

1 stop17h 30m

$778

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 7/8

6:05 pm-10:16 pm

1 stop20h 11m

Seattle/Tacoma Intl

Sat 7/26

2:55 pm-4:25 pm

1 stop33h 30m

$901

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 5/28

1:25 pm-4:10 pm

1 stop18h 45m

Seattle/Tacoma Intl

Tue 6/3

1:15 am-12:15 pm

1 stop19h 00m

$942

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 6/14

1:10 pm-7:30 pm

1 stop22h 20m

Seattle/Tacoma Intl

Fri 7/11

2:10 am-10:10 am

1 stop16h 00m

$1,049

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 5/14

9:10 am-12:30 pm

1 stop19h 20m

Seattle/Tacoma Intl

Sat 5/17

2:15 pm-5:50 pm

1 stop35h 35m

$1,223

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 7/8

12:00 pm-4:54 pm

2 stops44h 54m

Seattle/Tacoma Intl

Sat 7/26

8:25 pm-10:20 am

2 stops45h 55m

$1,644

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 5/14

4:50 pm-9:02 pm

3 stops44h 12m

Seattle/Tacoma Intl

Sat 5/17

5:13 pm-2:50 pm

2 stops29h 37m

$1,813

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 6/14

9:55 am-12:45 pm

2 stops42h 50m

Seattle/Tacoma Intl

Sat 7/12

11:31 am-5:25 pm

2 stops37h 54m

$2,305

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 5/29

7:35 am-5:59 pm

2 stops26h 24m

$461

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 5/29

9:05 am-10:40 am

1 stop17h 35m

$540

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 14 results
1
2

Compare providers for flights from Kansai Intl 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 Kansai Intl to Seattle in May.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*2 stars
AranGrantPrice Accuracy3 starsTrust 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 Kansai Intl Airport-Seattle flights, users find the pricing of AranGrant to be most consistent on Cheapflights vs. AranGrant Users can find the same prices on Osaka Kansai Intl Airport-Seattle flight deals on Cheapflights vs. AranGrant >95% of the time. Price accuracy is based on data collected from Osaka Kansai Intl Airport-Seattle flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Osaka Kansai Intl Airport-Seattle 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 Osaka Kansai Intl Airport-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 Kansai Intl to Seattle

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

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

Currently, January is the cheapest month in which you can book a flight from Osaka Kansai Intl Airport to Seattle (average of $238). Flying from Osaka Kansai Intl Airport to Seattle in July is currently the most expensive (average of $405). 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 KIX to SEA?

Find hourly flight availability from Kansai Intl 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 May 1, 2025.

Unlike at noon, when flights are generally more expensive, you can save up to 44% on flights from Osaka Kansai Intl Airport to Seattle by exploring options for tickets in the morning.

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 May 1, 2025.
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
STARLUX Airlines
9.1
Wonderful
161 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
EVA Air
8.4
Very good
1,186 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Korean Air
8.4
Very good
1,068 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
China Airlines
8.3
Very good
732 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.
Asiana Airlines
8.2
Very good
442 reviews
STARLUX Airlines
9.1
Wonderful
161 reviews

Comfort

9.0

Boarding

9.0

Entertainment

9.0

Food

8.9

Crew

9.3

Overall

9.1

Reviews

1 / 6
10.0
Excellent

Anonymous,Apr 2025

KIX - TPE

Very pleasant experience overall, while the main course of the meal could have been better and the movies could have been more recent and with more variety. They offer blindfolds and earplugs, which are a plus.

Related info for your journey

Find useful and relevant information for your journey from Kansai Intl 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 Kansai Intl?

    Seattle/Tacoma Intl (SEA), located 11.4 mi from the city center, is the airport you fly into when you book flights from Osaka Kansai Intl to Seattle. 1 airline have flights to Seattle/Tacoma Intl from Osaka Kansai Intl on a regular basis. Booking flights from Osaka Kansai Intl to Seattle/Tacoma Intl should not be difficult; the airport handles an average of 0 inbound flights from Osaka Kansai Intl per day.

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

    Flying on Air Canada is currently your cheapest option to Seattle, with prices starting at $879. Additional round-trip tickets that might be worth considering are offered by China Airlines and Philippine Airlines, with the lowest prices starting at $910 and $933, respectively. You may be able to fly from Osaka Kansai Intl Airport to Seattle for 14% less than the average price by searching for these airlines.

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

    The cheapest airline one-way is Korean Air, with whom users have recently found tickets for as low as $540. However, be on the lookout for offers from China Airlines and EVA Air, as they are both options that can get you from Osaka Kansai Intl Airport to Seattle for a low price.

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

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

  • How can I find direct flights from Kansai Intl to Seattle?

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

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

    Yes. Cheapflights offers flight deals from Kansai Intl 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 Kansai Intl Airport to Seattle?

    Currently, January is the cheapest month in which you can book a flight from Osaka Kansai Intl Airport to Seattle (average of $238). Flying from Osaka Kansai Intl Airport to Seattle in July is currently the most expensive (average of $405). 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 Kansai Intl Airport?

Book flights to Osaka Kansai Intl Airport if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Lakewood
Renton
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Kent
Lynnwood
Aberdeen
Shelton
Silverdale
Redmond
Issaquah

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Alternative routes for Kansai Intl to Seattle

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

Top airline flying from Kansai Intl to Seattle

Discover the top airline that operate flights from Kansai Intl 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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$852Average$923FlexibilityNo cancel feeOn-time76%

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