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$357+ 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 12/21. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — SEA
dic. 6 — dic. 131
sáb. 12/6
sáb. 12/13
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 noviembre 6, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$624
(Kiwi.com)

One-way from

$357
(Kiwi.com)

Popular in

September

Cheapest in

May

Average price

$931
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
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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. 5% potential increase in price ($56 potential increase over avg. RT price).
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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 November 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 noviembre 6, 2025.

This Flightnetwork deal was found by Cheapflights users on 11/6. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/222:35 pmKIX - SEA
1 stop34h 25mHainan Airlines
mar. 1/610:00 amSEA - KIX
1 stop33h 35mHainan Airlines
Deal found 11/6$666
This oojo deal was found by Cheapflights users on 11/6. 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.
dom. 12/212:30 pmKIX - SEA
1 stop20h 40mChina Airlines
sáb. 12/2712:10 amSEA - KIX
1 stop24h 40mChina Airlines
Deal found 11/6$794
This Trip.com deal was found by Cheapflights users on 11/6. 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.
dom. 12/2112:20 pmKIX - SEA
1 stop19h 45mSTARLUX Airlines
dom. 12/2811:45 pmSEA - KIX
1 stop20h 05mSTARLUX Airlines
Deal found 11/6$804
This Flightnetwork deal was found by Cheapflights users on 11/6. 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 Flightnetwork is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/229:00 amKIX - SEA
1 stop21h 55mAsiana Airlines
lun. 1/512:10 amSEA - KIX
1 stop27h 45mAsiana Airlines
Deal found 11/6$814
This Korean Air deal was found by Cheapflights users on 11/3. 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 Korean Air is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/132:00 pmKIX - SEA
1 stop36h 00mKorean Air
lun. 11/1711:00 amSEA - KIX
1 stop30h 45mKorean Air
Deal found 11/3$818
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
dom. 12/218:00 amKIX - SEA
2 stops33h 42mMultiple Airlines
dom. 12/2812:30 pmSEA - KIX
1 stop35h 55mMultiple Airlines
Deal found 11/6$819
This Asiana Airlines deal was found by Cheapflights users on 11/4. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 12/2510:30 amKIX - SEA
1 stop20h 25mAsiana Airlines
lun. 12/2912:10 amSEA - KIX
1 stop15h 30mAsiana Airlines
Deal found 11/4$823
This Asiana Airlines deal was found by Cheapflights users on 11/3. 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 Asiana Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/1310:30 amKIX - SEA
1 stop20h 25mAsiana Airlines
dom. 11/1612:10 amSEA - KIX
1 stop24h 55mAsiana Airlines
Deal found 11/3$856
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
lun. 12/2212:00 pmITM - SEA
2 stops19h 20mMultiple Airlines
mar. 1/63:45 pmSEA - ITM
1 stop22h 45mMultiple Airlines
Deal found 11/6$1,014
This American Airlines deal was found by Cheapflights users on 11/6. 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.
lun. 12/223:30 pmITM - SEA
2 stops20h 13mAmerican Airlines
mar. 1/66:38 pmSEA - ITM
2 stops29h 57mAmerican Airlines
Deal found 11/6$1,215
This Kiwi.com deal was found by Cheapflights users on 11/6. 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.
vie. 12/268:10 amITM - SEA
2 stops19h 25mMultiple Airlines
lun. 1/53:45 pmSEA - ITM
1 stop22h 45mMultiple Airlines
Deal found 11/6$1,243
This Alaska Airlines deal was found by Cheapflights users on 11/6. 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.
dom. 12/212:40 pmITM - SEA
1 stop12h 55mAlaska Airlines
dom. 12/2812:30 pmSEA - ITM
1 stop14h 25mAlaska Airlines
Deal found 11/6$1,329

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 noviembre 6, 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

jue. 1/15

8:45 pm-8:07 pm

1 stop16h 22m

Seattle/Tacoma Intl

mar. 1/27

7:00 am-6:45 pm

1 stop18h 45m

$624

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

mié. 1/14

9:10 pm-10:40 am

1 stop30h 30m

Seattle/Tacoma Intl

dom. 1/25

7:00 am-6:45 pm

1 stop18h 45m

$698

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

vie. 1/16

10:50 am-2:34 pm

2 stops20h 44m

Seattle/Tacoma Intl

vie. 1/30

7:00 am-6:45 pm

1 stop18h 45m

$706

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

mar. 1/13

8:45 pm-8:07 pm

1 stop16h 22m

Seattle/Tacoma Intl

mié. 1/28

8:50 am-10:20 pm

2 stops20h 30m

$746

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

sáb. 1/17

10:30 am-1:55 pm

1 stop20h 25m

Seattle/Tacoma Intl

mié. 1/28

7:00 am-6:45 pm

1 stop18h 45m

$780

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

sáb. 1/17

10:30 am-1:55 pm

1 stop20h 25m

Seattle/Tacoma Intl

vie. 1/30

7:00 am-6:45 pm

1 stop18h 45m

$781

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

sáb. 1/17

10:30 am-1:55 pm

1 stop20h 25m

Seattle/Tacoma Intl

sáb. 1/24

12:10 am-8:40 am

1 stop15h 30m

$784

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

lun. 12/22

9:00 am-1:55 pm

1 stop21h 55m

Seattle/Tacoma Intl

lun. 1/5

12:10 am-8:55 pm

1 stop27h 45m

$814

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

dom. 12/21

8:00 am-12:42 am

2 stops33h 42m

Seattle/Tacoma Intl

dom. 12/28

12:30 pm-5:25 pm

1 stop35h 55m

$819

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

jue. 11/13

2:00 pm-9:00 am

1 stop36h 00m

Seattle/Tacoma Intl

lun. 11/17

11:00 am-8:45 pm

1 stop16h 45m

$820

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/6

Showing 1-10 of 43 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 November.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
ExpediaPrice Accuracy2 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-Seattle flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on Osaka-Seattle flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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 noviembre 6, 2025.

A simple way to save on the total cost of your ticket is to fly from Osaka to Seattle in the evening. If you’re flexible enough to do this you can expect to save up to 39% on your trip compared to booking a flight 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 noviembre 6, 2025.
See what other customers who have flown with EVA Air and ANA 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.
EVA Air
8.4
Very good
1,270 reviews

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
EVA Air
8.4
Very good
1,270 reviews
EVA Air
8.4
Very good
1,270 reviews

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.
ANA
8.4
Very good
1,003 reviews
EVA Air
8.4
Very good
1,270 reviews

Crew

8.6

Food

8.1

Overall

8.4

Boarding

8.4

Entertainment

8.0

Comfort

8.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Oct 2025

TPE - YYZ

All was well. Despite the flight being delayed a few minutes, passengers were made sure to be informed and updated on the status of the delay.

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 0 different airlines.

  • How long is the flight from Osaka to Seattle?

    For as low as $624, Alaska Airlines can have you in Seattle from Osaka in 16h 22m. Osaka and Seattle are separated by a distance of 5024 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

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

    For one-way options, check prices for Hainan Airlines. According to our data, you can fly for as low as $391. Users have also found prices from $441 and $489 on Alaska Airlines and American Airlines, 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.

See more FAQs

Traveling to a place near Seattle?

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Alternative routes for Osaka to Seattle

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