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$455+ 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 8/29. Fares are subject to change and may not be available on all flights or dates of travel.
KIX — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$789
(Mytrip)

One-way from

$455
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$1,370
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. 16% potential increase in price ($203 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in June 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 June 12, 2025.

This Mytrip deal was found by Cheapflights users on 6/12. 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 7/42:30 pmKIX - SEA
1 stop14h 15mMultiple Airlines
Fri 7/182:30 pmSEA - KIX
1 stop16h 20mMultiple Airlines
Deal found 6/12$789
This Cheapflightsfares deal was found by Cheapflights users on 6/11. 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.
Tue 10/71:10 pmKIX - SEA
1 stop22h 10mChina Airlines
Thu 10/301:10 amSEA - KIX
1 stop20h 10mChina Airlines
Deal found 6/11$846
This Delta deal was found by Cheapflights users on 6/10. 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.
Wed 8/2012:35 pmKIX - SEA
1 stop17h 26mDelta
Wed 9/312:35 pmSEA - KIX
1 stop16h 25mDelta
Deal found 6/10$864
This Trip.com deal was found by Cheapflights users on 6/12. 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.
Mon 6/231:10 pmKIX - SEA
1 stop22h 20mEVA Air
Sun 6/291:50 amSEA - KIX
1 stop16h 20mEVA Air
Deal found 6/12$898
This oojo deal was found by Cheapflights users on 6/12. 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.
Mon 8/186:20 pmKIX - SEA
1 stop32h 30mKorean Air
Mon 9/812:50 pmSEA - KIX
1 stop36h 15mKorean Air
Deal found 6/12$899
This Philippine Airlines deal was found by Cheapflights users on 6/12. 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 6/12$903
This Expedia deal was found by Cheapflights users on 6/10. 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.
Fri 7/111:25 pmKIX - SEA
1 stop19h 10mSTARLUX Airlines
Mon 7/141:15 amSEA - KIX
1 stop19h 00mSTARLUX Airlines
Deal found 6/10$928
This SmartFares deal was found by Cheapflights users on 6/11. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/1010:50 amKIX - SEA
1 stop17h 55mAsiana Airlines
Mon 7/142:30 pmSEA - KIX
1 stop14h 35mAsiana Airlines
Deal found 6/11$948
This FlightHub deal was found by Cheapflights users on 6/12. 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 8/49:10 pmKIX - SEA
1 stop33h 15mANA
Sat 8/94:30 pmSEA - KIX
1 stop32h 20mANA
Deal found 6/12$1,076
This United Airlines deal was found by Cheapflights users on 6/10. 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 8/208:25 amKIX - SEA
3 stops28h 29mUnited Airlines
Wed 9/37:00 amSEA - KIX
2 stops20h 30mUnited Airlines
Deal found 6/10$1,413

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 June 12, 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

Fri 7/4

2:30 pm-12:45 pm

1 stop14h 15m

Seattle/Tacoma Intl

Fri 7/18

2:30 pm-10:50 pm

1 stop16h 20m

$789

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 10/7

1:10 pm-7:20 pm

1 stop22h 10m

Seattle/Tacoma Intl

Thu 10/30

1:10 am-1:20 pm

1 stop20h 10m

$846

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 8/20

12:35 pm-2:01 pm

1 stop17h 26m

Seattle/Tacoma Intl

Wed 9/3

12:35 pm-9:00 pm

1 stop16h 25m

$864

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 6/23

1:10 pm-7:30 pm

1 stop22h 20m

Seattle/Tacoma Intl

Sun 6/29

1:50 am-10:10 am

1 stop16h 20m

$898

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 8/18

6:20 pm-10:50 am

1 stop32h 30m

Seattle/Tacoma Intl

Mon 9/8

12:50 pm-5:05 pm

1 stop36h 15m

$899

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 8/20

3:20 pm-7:15 pm

1 stop19h 55m

Seattle/Tacoma Intl

Wed 9/3

11:35 pm-2:20 pm

1 stop22h 45m

$903

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 7/11

1:25 pm-4:35 pm

1 stop19h 10m

Seattle/Tacoma Intl

Mon 7/14

1:15 am-12:15 pm

1 stop19h 00m

$928

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 7/10

10:50 am-12:45 pm

1 stop17h 55m

Seattle/Tacoma Intl

Mon 7/14

2:30 pm-9:05 pm

1 stop14h 35m

$948

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 8/4

9:10 pm-2:25 pm

1 stop33h 15m

Seattle/Tacoma Intl

Sat 8/9

4:30 pm-4:50 pm

1 stop32h 20m

$1,076

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 8/20

8:25 am-8:54 pm

3 stops28h 29m

Seattle/Tacoma Intl

Wed 9/3

7:00 am-7:30 pm

2 stops20h 30m

$1,413

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/10

Showing 1-10 of 20 results
1
2

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 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 June 12, 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 June 12, 2025.
Peruse reviews from past customers who have flown with STARLUX Airlines, EVA Air and Korean Air from Osaka to Seattle to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
STARLUX Airlines
9.1
Wonderful
177 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
EVA Air
8.4
Very good
1,202 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
Korean Air
8.4
Very good
1,088 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
China Airlines
8.3
Very good
738 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.
ANA
8.3
Very good
882 reviews
STARLUX Airlines
9.1
Wonderful
177 reviews

Food

8.8

Overall

9.1

Comfort

9.0

Entertainment

8.9

Boarding

9.0

Crew

9.3

Reviews

1 / 7
10.0
Excellent

ltulagan,Jun 2025

TPE - SEA

The whole trip was very pleasant from the crew, the food, the amenities during the flight.

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 China Airlines is currently your cheapest option to Seattle, with prices starting at $846. Additional round-trip tickets that might be worth considering are offered by Delta and EVA Air, with the lowest prices starting at $864 and $898, respectively. You may be able to fly from Osaka Kansai Intl Airport to Seattle for 15% 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 China Airlines, with whom users have recently found tickets for as low as $503. However, be on the lookout for offers from EVA Air and Philippine Airlines, 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 $391). 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
Ocean Shores
Lacey
Leavenworth
Federal Way
Lynnwood
Olympia
Shoreline
Kent
Cle Elum
Centralia
Kirkland
Aberdeen
Renton
Shelton
Silverdale
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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$852Average$923FlexibilityNo cancel feeOn-time76%

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