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$426+ 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 2/5. Fares are subject to change and may not be available on all flights or dates of travel.
OSA — SEA
Dec 27 — Jan 31
Fri 12/27
Fri 1/3
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 December 22, 2024.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$773
(oojo)

One-way from

$426
(Kiwi.com)

Popular in

February

Cheapest in

November

Average price

$1,084
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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High demand for flights, 5% potential price rise
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Best time to find cheap flights, 1% potential price drop
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Average for round-trip flights in December 2024
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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 December 22, 2024.

This oojo deal was found by Cheapflights users on 12/22. 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 12/2312:45 pmKIX - SEA
1 stop22h 30mChina Airlines
Sat 1/412:10 amSEA - KIX
1 stop18h 25mChina Airlines
Deal found 12/22$973
This KAYAK deal was found by Cheapflights users on 12/22. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/236:00 pmKIX - SEA
1 stop17h 10mMultiple Airlines
Sun 1/512:45 pmSEA - KIX
1 stop34h 05mMultiple Airlines
Deal found 12/22$1,002
This Asiana Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/239:00 amKIX - SEA
1 stop18h 55mAsiana Airlines
Sun 1/512:45 pmSEA - KIX
1 stop34h 05mAsiana Airlines
Deal found 12/21$1,026
This oojo deal was found by Cheapflights users on 12/22. 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.
Thu 12/266:00 pmKIX - SEA
1 stop16h 40mEVA Air
Fri 1/312:10 amSEA - KIX
1 stop23h 35mEVA Air
Deal found 12/22$1,147
This Justfly.com deal was found by Cheapflights users on 12/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/232:05 pmITM - SEA
2 stops24h 55mAir Canada
Sun 1/53:05 pmSEA - ITM
2 stops34h 50mAir Canada
Deal found 12/21$1,221
This American Airlines deal was found by Cheapflights users on 12/22. 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.
Mon 12/234:25 pmITM - SEA
2 stops19h 27mAmerican Airlines
Sun 1/512:30 pmSEA - ITM
1 stop14h 25mAmerican Airlines
Deal found 12/22$1,492
This FlightHub deal was found by Cheapflights users on 12/22. 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 12/232:50 pmITM - SEA
1 stop12h 00mJapan Airlines
Sun 1/512:30 pmSEA - ITM
1 stop14h 25mJapan Airlines
Deal found 12/22$1,612
This Justfly.com deal was found by Cheapflights users on 12/21. 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 Justfly.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/299:05 pmKIX - SEA
1 stop33h 15mANA
Wed 1/83:45 pmSEA - KIX
1 stop13h 30mANA
Deal found 12/21$1,802
This FlightHub deal was found by Cheapflights users on 12/22. 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.
Sun 12/298:45 pmKIX - SEA
1 stop30h 05mJapan Airlines
Wed 1/812:30 pmSEA - KIX
1 stop27h 50mJapan Airlines
Deal found 12/22$1,804
This Ovago deal was found by Cheapflights users on 12/21. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/266:05 pmKIX - SEA
2 stops31h 54mCathay Pacific
Sat 1/45:55 pmSEA - KIX
3 stops28h 00mCathay Pacific
Deal found 12/21$1,867
This United Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/231:00 pmITM - SEA
3 stops43h 25mUnited Airlines
Sun 1/512:36 pmSEA - ITM
2 stops36h 34mUnited Airlines
Deal found 12/21$2,232
This United Airlines deal was found by Cheapflights users on 12/21. 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.
Mon 12/238:25 amKIX - SEA
3 stops32h 25mUnited Airlines
Sun 1/52:00 pmSEA - KIX
2 stops33h 35mUnited Airlines
Deal found 12/21$2,260

Find flights from Osaka to Seattle within your budget

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 December 22, 2024.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Tue 6/3

5:00 pm-12:35 pm

1 stop35h 35m

Seattle/Tacoma Intl

Mon 6/16

2:00 pm-3:50 pm

1 stop33h 50m

$773

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 5/1

6:30 pm-6:50 pm

1 stop16h 20m

Seattle/Tacoma Intl

Mon 10/13

1:30 am-10:10 am

1 stop16h 40m

$824

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 3/6

12:45 pm-6:15 pm

1 stop22h 30m

Seattle/Tacoma Intl

Sun 3/9

1:10 am-1:20 pm

1 stop20h 10m

$829

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 5/2

3:10 pm-4:10 pm

1 stop17h 00m

Seattle/Tacoma Intl

Sun 5/4

1:15 am-12:05 pm

1 stop18h 50m

$833

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 1/22

3:15 pm-6:10 pm

1 stop19h 55m

Seattle/Tacoma Intl

Tue 1/28

1:58 pm-9:55 pm

2 stops38h 57m

$837

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 3/1

9:15 am-9:00 am

1 stop16h 45m

Seattle/Tacoma Intl

Sun 3/30

6:15 am-9:05 pm

2 stops22h 50m

$866

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Mon 4/28

6:05 pm-2:23 pm

1 stop12h 18m

Seattle/Tacoma Intl

Sat 10/18

7:15 pm-4:25 pm

1 stop29h 10m

$1,099

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 3/27

6:30 pm-10:15 pm

2 stops43h 45m

Seattle/Tacoma Intl

Tue 4/1

7:15 am-2:50 pm

1 stop15h 35m

$1,254

OsakaSeattle

ITM - SEA

ITMSEA

Osaka Itami

Sat 3/1

4:25 pm-6:43 pm

2 stops19h 18m

Seattle/Tacoma Intl

Sun 3/30

6:05 am-5:35 pm

2 stops19h 30m

$1,272

OsakaSeattle

ITM - SEA

ITMSEA

Osaka Itami

Tue 6/3

2:35 pm-10:35 am

1 stop12h 00m

Seattle/Tacoma Intl

Mon 6/16

1:30 pm-7:50 pm

1 stop14h 20m

$1,438

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Showing 1-10 of 45 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 December.
ProviderPrice AccuracyTrust Score*
eDreamsPrice Accuracy3 starsTrust Score*3 stars
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice 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-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Osaka-Seattle flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.

Travel insights for flights from Osaka to Seattle

Get recent, data-driven insights about flights from Osaka to Seattle including ideal travel times, pricing trends, and more.

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 $411). 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 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 December 22, 2024.

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.

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 December 22, 2024.
Get a feel of what it's like to fly with China Airlines, United Airlines and Cathay Pacific from Osaka to Seattle by reading reviews from past customers. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
STARLUX Airlines
9.1
Wonderful
129 reviews

Boarding

9.1

Entertainment

9.1

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

STARLUX Airlines
9.1
Wonderful
129 reviews
STARLUX Airlines
9.1
Wonderful
129 reviews

Boarding

9.1

Entertainment

9.1

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

EVA Air
8.4
Very good
1,263 reviews
STARLUX Airlines
9.1
Wonderful
129 reviews

Boarding

9.1

Entertainment

9.1

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

Korean Air
8.4
Very good
1,025 reviews
STARLUX Airlines
9.1
Wonderful
129 reviews

Boarding

9.1

Entertainment

9.1

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

ANA
8.4
Very good
844 reviews
STARLUX Airlines
9.1
Wonderful
129 reviews

Boarding

9.1

Entertainment

9.1

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

Japan Airlines
8.3
Very good
1,440 reviews
STARLUX Airlines
9.1
Wonderful
129 reviews

Boarding

9.1

Entertainment

9.1

Comfort

9.0

Overall

9.1

Crew

9.3

Food

8.9

Reviews

1 / 3

Delicious food! I thought my first leg from SFO to Taipei was good, but this second from Taipei to Sapporo was even better. I liked the configuration of the plane 2 x 3 x 2. Although I wish it was made clear that folks needed to have their seats up during meal times. I had to remind the individual in front of me each time, which was awkward.

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 3 different airlines.

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

    Asiana Airlines, at $773, was found to be the cheapest airline from Osaka to Seattle.Alternate airlines to your destination round-trip include EVA Air and China Airlines. Users have found that Asiana Airlines is 27% 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 Philippine Airlines. According to our data, you can fly for as low as $458. Users have also found prices from $481 and $510 on Air Canada and Asiana 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.

  • 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 $411). 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

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 3 airlines flying from Osaka to Seattle

Discover the top 3 airlines 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 December 22, 2024.
AirlineCheapestAverageFlexibilityOn-time
Air CanadaCheapest$838Average$1,344FlexibilityNo cancel feeOn-time67%
Asiana AirlinesCheapest$872Average$926FlexibilityNo cancel feeOn-time76%
ANACheapest$1,397Average$1,863FlexibilityNo cancel feeOn-time80%
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