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$431+ 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 10/7. Fares are subject to change and may not be available on all flights or dates of travel.
KIX — SEA
jul. 23 — jul. 301
mié. 7/23
mié. 7/30
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 julio 18, 2025.

Round-trip from

$720
(FlightHub)

One-way from

$431
(Kiwi.com)

Popular in

August

Cheapest in

February

Average price

$985
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. 19% potential increase in price ($233 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 July 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 julio 18, 2025.

This FlightHub deal was found by Cheapflights users on 7/17. 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.
sáb. 9/67:10 pmKIX - SEA
1 stop33h 20mAsiana Airlines
dom. 9/212:15 pmSEA - KIX
1 stop14h 50mAsiana Airlines
Deal found 7/17$720
This oojo deal was found by Cheapflights users on 7/16. 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 oojo is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 8/219:05 amKIX - SEA
1 stop19h 40mMultiple Airlines
lun. 9/82:15 pmSEA - KIX
1 stop29h 05mMultiple Airlines
Deal found 7/16$803
This FlightHub deal was found by Cheapflights users on 7/17. 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.
vie. 9/53:20 pmKIX - SEA
1 stop19h 55mPhilippine Airlines
dom. 9/2111:35 pmSEA - KIX
1 stop22h 45mPhilippine Airlines
Deal found 7/17$863
This FlightHub deal was found by Cheapflights users on 7/17. 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.
vie. 9/51:25 pmKIX - SEA
1 stop18h 45mSTARLUX Airlines
sáb. 9/201:15 amSEA - KIX
1 stop19h 00mSTARLUX Airlines
Deal found 7/17$864
This oojo deal was found by Cheapflights users on 7/17. 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.
sáb. 8/232:00 pmKIX - SEA
1 stop21h 45mChina Airlines
sáb. 8/301:40 amSEA - KIX
1 stop24h 25mChina Airlines
Deal found 7/17$898
This HIS deal was found by Cheapflights users on 7/17. 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 HIS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/236:30 pmKIX - SEA
1 stop17h 20mEVA Air
sáb. 8/302:10 amSEA - KIX
1 stop16h 00mEVA Air
Deal found 7/17$910

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 julio 18, 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

sáb. 9/6

5:00 pm-12:30 pm

1 stop35h 30m

Seattle/Tacoma Intl

dom. 9/21

2:15 pm-3:50 pm

1 stop33h 35m

$720

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

jue. 8/21

9:05 am-12:45 pm

1 stop19h 40m

Seattle/Tacoma Intl

lun. 9/8

2:15 pm-11:20 am

1 stop29h 05m

$803

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

vie. 9/5

3:20 pm-7:15 pm

1 stop19h 55m

Seattle/Tacoma Intl

dom. 9/21

11:35 pm-2:20 pm

1 stop22h 45m

$863

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

vie. 9/5

1:25 pm-4:10 pm

1 stop18h 45m

Seattle/Tacoma Intl

sáb. 9/20

1:15 am-12:15 pm

1 stop19h 00m

$864

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

sáb. 8/23

2:00 pm-7:45 pm

1 stop21h 45m

Seattle/Tacoma Intl

sáb. 8/30

1:40 am-6:05 pm

1 stop24h 25m

$898

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

sáb. 8/23

6:30 pm-7:50 pm

1 stop17h 20m

Seattle/Tacoma Intl

sáb. 8/30

2:10 am-10:10 am

1 stop16h 00m

$910

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

mar. 10/7

7:35 am-7:31 pm

2 stops27h 56m

$431

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

mar. 10/7

2:00 pm-7:20 pm

1 stop21h 20m

$496

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

dom. 11/16

10:15 am-6:35 pm

1 stop25h 20m

$517

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

sáb. 11/29

12:55 pm-5:40 pm

1 stop21h 45m

$538

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/16

Showing 1-10 of 12 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 julio 18, 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.

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 julio 18, 2025.
Get a feel of what it's like to fly with STARLUX Airlines, EVA Air, and China Airlines from Osaka Kansai Intl Airport to Seattle by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.0
Wonderful
189 reviews

Overall

9.0

Food

8.9

Boarding

9.0

Comfort

9.0

Entertainment

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
9.0
Wonderful
189 reviews
STARLUX Airlines
9.0
Wonderful
189 reviews

Overall

9.0

Food

8.9

Boarding

9.0

Comfort

9.0

Entertainment

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
1,214 reviews
STARLUX Airlines
9.0
Wonderful
189 reviews

Overall

9.0

Food

8.9

Boarding

9.0

Comfort

9.0

Entertainment

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
8.2
Very good
745 reviews
STARLUX Airlines
9.0
Wonderful
189 reviews

Overall

9.0

Food

8.9

Boarding

9.0

Comfort

9.0

Entertainment

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.
Asiana Airlines
8.2
Very good
456 reviews
STARLUX Airlines
9.0
Wonderful
189 reviews

Overall

9.0

Food

8.9

Boarding

9.0

Comfort

9.0

Entertainment

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.
Delta
8.0
Very good
7,958 reviews
STARLUX Airlines
9.0
Wonderful
189 reviews

Overall

9.0

Food

8.9

Boarding

9.0

Comfort

9.0

Entertainment

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 Asiana Airlines is currently your cheapest option to Seattle, with prices starting at $720. Additional round-trip tickets that might be worth considering are offered by Philippine Airlines and STARLUX Airlines, with the lowest prices starting at $863 and $864, respectively. You may be able to fly from Osaka Kansai Intl Airport to Seattle for 25% 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 $496. However, be on the lookout for offers from Philippine 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 June is currently the most expensive (average of $388). 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?

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SeaTac
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Tacoma
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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.
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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 julio 18, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$852Average$926FlexibilityNo cancel feeOn-time76%

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