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$441+ 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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — SEA
Jul 8 — Jul 151
Tue 7/8
Tue 7/15
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 July 3, 2025.

Round-trip from

$827
(Kiwi.com)

One-way from

$441
(Kiwi.com)

Popular in

August

Cheapest in

May

Average price

$985
From Osaka (OSA) to Seattle/Tacoma Intl
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One-way flight from Osaka (OSA) to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 11% potential increase in price ($121 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($19 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 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 July 3, 2025.

This Kiwi.com deal was found by Cheapflights users on 7/3. 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 7/1612:25 pmKIX - SEA
1 stop16h 20mMultiple Airlines
Mon 8/182:30 pmSEA - KIX
1 stop16h 20mMultiple Airlines
Deal found 7/3$827
This Booking.com deal was found by Cheapflights users on 7/1. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/219:05 amKIX - SEA
1 stop17h 45mKorean Air
Wed 9/312:50 pmSEA - KIX
1 stop30h 30mKorean Air
Deal found 7/1$830
This Gotogate deal was found by Cheapflights users on 7/3. 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.
Sun 8/1710:20 amKIX - SEA
1 stop24h 55mPhilippine Airlines
Sun 8/2411:35 pmSEA - KIX
1 stop28h 05mPhilippine Airlines
Deal found 7/3$860
This Cheapflightsfares deal was found by Cheapflights users on 7/3. 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 8/181:10 pmKIX - SEA
1 stop22h 35mChina Airlines
Sun 9/71:40 amSEA - KIX
1 stop18h 20mChina Airlines
Deal found 7/3$892
This Delta deal was found by Cheapflights users on 7/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/2112:35 pmKIX - SEA
1 stop17h 26mDelta
Mon 9/812:35 pmSEA - KIX
1 stop16h 25mDelta
Deal found 7/2$897
This STARLUX Airlines deal was found by Cheapflights users on 7/2. 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 STARLUX Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/612:20 pmKIX - SEA
1 stop19h 45mSTARLUX Airlines
Mon 11/1011:45 pmSEA - KIX
1 stop18h 25mSTARLUX Airlines
Deal found 7/2$917
This FlightHub deal was found by Cheapflights users on 7/3. 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 7/169:10 amKIX - SEA
1 stop19h 35mAsiana Airlines
Wed 8/202:30 pmSEA - KIX
1 stop14h 35mAsiana Airlines
Deal found 7/3$934
This FlightHub deal was found by Cheapflights users on 7/2. 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.
Mon 7/71:10 pmKIX - SEA
1 stop22h 40mEVA Air
Fri 7/111:10 amSEA - KIX
1 stop17h 00mEVA Air
Deal found 7/2$951
This Kiwi.com deal was found by Cheapflights users on 7/1. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/212:05 pmITM - SEA
1 stop13h 25mMultiple Airlines
Wed 9/31:45 pmSEA - ITM
1 stop14h 00mMultiple Airlines
Deal found 7/1$1,106
This Cheapflightsfares deal was found by Cheapflights users on 7/2. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/182:00 pmITM - SEA
1 stop16h 25mANA
Mon 9/84:30 pmSEA - ITM
1 stop23h 35mANA
Deal found 7/2$1,241
This Alaska Airlines deal was found by Cheapflights users on 7/1. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/202:35 pmITM - SEA
1 stop12h 55mAlaska Airlines
Wed 9/31:45 pmSEA - ITM
1 stop14h 00mAlaska Airlines
Deal found 7/1$1,246
This American Airlines deal was found by Cheapflights users on 7/1. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/214:25 pmITM - SEA
2 stops21h 08mAmerican Airlines
Mon 9/81:30 pmSEA - ITM
1 stop14h 15mAmerican Airlines
Deal found 7/1$1,316

Cheapflights Fare Finder

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 July 3, 2025.
Use the filters below to find and compare flights from Osaka to Seattle that are best for you.

Fly from

Osaka

Fly to

Seattle

Route

Depart

Return

Price

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 7/16

12:25 pm-12:45 pm

1 stop16h 20m

Seattle/Tacoma Intl

Mon 8/18

2:30 pm-10:50 pm

1 stop16h 20m

$827

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 8/21

9:05 am-10:50 am

1 stop17h 45m

Seattle/Tacoma Intl

Wed 9/3

12:50 pm-11:20 am

1 stop30h 30m

$830

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 8/17

10:20 am-7:15 pm

1 stop24h 55m

Seattle/Tacoma Intl

Sun 8/24

11:35 pm-7:40 pm

1 stop28h 05m

$860

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 8/18

7:05 pm-7:45 pm

1 stop16h 40m

Seattle/Tacoma Intl

Sun 9/7

1:40 am-12:00 pm

1 stop18h 20m

$892

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 8/21

12:35 pm-2:01 pm

1 stop17h 26m

Seattle/Tacoma Intl

Mon 9/8

12:35 pm-9:00 pm

1 stop16h 25m

$897

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sun 7/13

1:25 pm-4:35 pm

1 stop19h 10m

Seattle/Tacoma Intl

Sun 8/17

1:15 am-2:00 pm

1 stop20h 45m

$918

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 7/16

9:10 am-12:45 pm

1 stop19h 35m

Seattle/Tacoma Intl

Wed 8/20

2:30 pm-9:05 pm

1 stop14h 35m

$934

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 7/7

1:10 pm-7:50 pm

1 stop22h 40m

Seattle/Tacoma Intl

Fri 7/11

1:10 am-10:10 am

1 stop17h 00m

$951

OsakaSeattle

ITM - SEA

ITMSEA

Osaka Itami

Thu 8/21

2:05 pm-11:30 am

1 stop13h 25m

Seattle/Tacoma Intl

Wed 9/3

1:45 pm-7:45 pm

1 stop14h 00m

$1,106

OsakaSeattle

ITM - SEA

ITMSEA

Osaka Itami

Mon 8/18

6:00 pm-2:25 pm

1 stop12h 25m

Seattle/Tacoma Intl

Mon 9/8

4:30 pm-8:05 am

1 stop23h 35m

$1,241

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/1

Showing 1-10 of 27 results
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2
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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.

Cheapflights Insights

Everything you need to know about your flight from Osaka to Seattle

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 July 3, 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.

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 July 3, 2025.
See what other customers who have flown with STARLUX Airlines, EVA Air, and Korean Air from Osaka to Seattle have to say. 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
189 reviews

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Overall

9.1

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
189 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Overall

9.1

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
1,215 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Overall

9.1

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
1,101 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Overall

9.1

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
8.4
Very good
893 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Overall

9.1

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.
Japan Airlines
8.3
Very good
1,505 reviews
STARLUX Airlines
9.1
Wonderful
189 reviews

Boarding

9.0

Entertainment

9.0

Comfort

9.0

Food

8.9

Overall

9.1

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 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 1 airline.

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

    Korean Air, at $830, was found to be the cheapest airline from Osaka to Seattle.Alternate airlines to your destination round-trip include Philippine Airlines and STARLUX Airlines. Users have found that Korean Air is 13% 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 China Airlines. According to our data, you can fly for as low as $503. Users have also found prices from $529 and $561 on Philippine 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 $390). 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
Tacoma
Lakewood
Ocean Shores
Lacey
Leavenworth
Lynnwood
Renton
Olympia
Shoreline
Puyallup
Cle Elum
Centralia
Kent
Federal Way
Chehalis
Kirkland
Aberdeen
Shelton

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 airline flying from Osaka to Seattle

Discover the top airline 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 July 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
Asiana AirlinesCheapest$852Average$926FlexibilityNo cancel feeOn-time76%

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