How long is the flight from Osaka to Seattle?

For as low as $885, Alaska Airlines can have you in Seattle from Osaka in 18h 50m. Osaka and Seattle are separated by a distance of 4999 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 EVA Air. According to our data, you can fly for as low as $309. Users have also found prices from $420 and $424 on Korean Air and Air Canada, respectively.

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.

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).

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.

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.

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.

$364+ Flights from Osaka to Seattle

Q: How much does it cost to fly round-trip from Osaka to Seattle?

Airfare is below average for this route at the moment. Osaka to Seattle flights typically cost between $805 and $1,084 in December. The cheapest round-trip price found within the last 3 days was $737 on Alaska Airlines (Dec 17-Jan 9).

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1. Tell us where you want to go

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2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

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Cheap 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 4, 2025.

Wed 12/178:45 pmKIX - SEA

1 stop20h 01mAlaska Airlines

Fri 1/95:45 pmSEA - KIX

1 stop32h 00mAlaska Airlines

Deal found 12/2

$737

Wed 12/178:00 amKIX - SEA

2 stops29h 38mMultiple Airlines

Fri 1/97:00 amSEA - KIX

1 stop18h 45mMultiple Airlines

Deal found 12/3

$740

Thu 12/259:00 amKIX - SEA

1 stop21h 55mAsiana Airlines

Mon 12/2912:10 amSEA - KIX

1 stop15h 40mAsiana Airlines

Deal found 12/3

$838

Wed 12/174:30 pmITM - SEA

2 stops18h 50mAmerican Airlines

Fri 1/96:00 amSEA - ITM

2 stops20h 20mAmerican Airlines

Deal found 12/3

$885

Wed 12/179:25 amKIX - SEA

2 stops40h 37mCathay Pacific

Fri 1/96:20 amSEA - KIX

3 stops39h 35mCathay Pacific

Deal found 12/3

$976

Wed 12/1712:30 pmITM - SEA

2 stops18h 50mMultiple Airlines

Fri 1/93:45 pmSEA - ITM

1 stop22h 45mMultiple Airlines

Deal found 12/3

$1,028

Wed 12/1711:30 amITM - SEA

1 stop15h 20mJapan Airlines

Fri 1/912:30 pmSEA - ITM

1 stop14h 25mJapan Airlines

Deal found 12/2

$1,612

Best flights from Osaka to Seattle
Discover carefully curated flight deals from Osaka to Seattle that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated December 4, 2025.

Wed 12/178:45 pmKIX - SEA

1 stop20h 01mAlaska Airlines

Fri 1/95:45 pmSEA - KIX

1 stop32h 00mAlaska Airlines

Deal found 12/2

$737

Fri 1/168:45 pmKIX - SEA

2 stops36h 46mMultiple Airlines

Fri 1/2311:00 amSEA - KIX

1 stop16h 45mMultiple Airlines

Deal found 12/2

$786

Sat 1/1710:30 amKIX - SEA

1 stop20h 25mAsiana Airlines

Fri 1/2312:10 amSEA - KIX

1 stop27h 45mAsiana Airlines

Deal found 12/3

$787

Wed 4/291:10 pmKIX - SEA

1 stop22h 20mEVA Air

Mon 5/41:50 amSEA - KIX

1 stop18h 20mEVA Air

Deal found 12/4

$827

Wed 12/174:30 pmITM - SEA

2 stops18h 50mAmerican Airlines

Fri 1/96:00 amSEA - ITM

2 stops20h 20mAmerican Airlines

Deal found 12/3

$885

Thu 1/292:05 pmITM - SEA

2 stops25h 01mAir Canada

Sun 2/13:40 pmSEA - ITM

2 stops34h 15mAir Canada

Deal found 12/2

$908

Wed 12/177:50 amKIX - SEA

2 stops28h 26mMultiple Airlines

Fri 1/910:05 amSEA - KIX

2 stops17h 30mMultiple Airlines

Deal found 12/2

$809

Wed 1/219:00 amKIX - SEA

1 stop21h 55mAsiana Airlines

Fri 1/2312:10 amSEA - KIX

1 stop15h 40mAsiana Airlines

Deal found 12/3

$827

Sat 1/172:15 pmKIX - SEA

2 stops24h 51mMultiple Airlines

Sat 1/2411:00 amSEA - KIX

1 stop16h 45mMultiple Airlines

Deal found 12/3

$837

Thu 12/259:00 amKIX - SEA

1 stop21h 55mAsiana Airlines

Mon 12/2912:10 amSEA - KIX

1 stop15h 40mAsiana Airlines

Deal found 12/3

$838

Wed 12/1712:30 pmITM - SEA

2 stops18h 50mMultiple Airlines

Fri 1/93:45 pmSEA - ITM

1 stop22h 45mMultiple Airlines

Deal found 12/3

$1,028

Fri 1/162:40 pmITM - SEA

1 stop12h 15mAmerican Airlines

Fri 1/236:00 amSEA - ITM

2 stops21h 20mAmerican Airlines

Deal found 12/1

$1,284

Sat 1/177:05 amITM - SEA

2 stops23h 50mMultiple Airlines

Fri 1/2312:10 amSEA - ITM

2 stops21h 30mMultiple Airlines

Deal found 12/3

$1,032

Fri 1/167:05 amITM - SEA

2 stops23h 50mMultiple Airlines

Fri 1/2310:05 amSEA - ITM

2 stops16h 50mMultiple Airlines

Deal found 12/1

$1,122

Last-minute flights from Osaka to Seattle
Discover last-minute flight deals from Osaka to Seattle. Data last updated December 4, 2025 and is based on user searches.

Wed 12/178:45 pmKIX - SEA

1 stop20h 01mAlaska Airlines

Fri 1/95:45 pmSEA - KIX

1 stop32h 00mAlaska Airlines

Deal found 12/2

$737

Wed 12/178:00 amKIX - SEA

2 stops29h 38mMultiple Airlines

Fri 1/97:00 amSEA - KIX

1 stop18h 45mMultiple Airlines

Deal found 12/3

$740

Wed 12/174:30 pmITM - SEA

2 stops18h 50mAmerican Airlines

Fri 1/96:00 amSEA - ITM

2 stops20h 20mAmerican Airlines

Deal found 12/3

$885

Wed 12/1712:30 pmITM - SEA

2 stops18h 50mMultiple Airlines

Fri 1/93:45 pmSEA - ITM

1 stop22h 45mMultiple Airlines

Deal found 12/3

$1,028

Thu 12/259:00 amKIX - SEA

1 stop21h 55mAsiana Airlines

Mon 12/2912:10 amSEA - KIX

1 stop15h 40mAsiana Airlines

Deal found 12/3

$838

Fri 1/168:45 pmKIX - SEA

2 stops36h 46mMultiple Airlines

Fri 1/2311:00 amSEA - KIX

1 stop16h 45mMultiple Airlines

Deal found 12/2

$786

Fri 1/167:05 amITM - SEA

2 stops23h 50mMultiple Airlines

Fri 1/2310:05 amSEA - ITM

2 stops16h 50mMultiple Airlines

Deal found 12/1

$1,122

Sat 1/1710:30 amKIX - SEA

1 stop20h 25mAsiana Airlines

Fri 1/2312:10 amSEA - KIX

1 stop27h 45mAsiana Airlines

Deal found 12/3

$787

Sat 1/172:15 pmKIX - SEA

2 stops24h 51mMultiple Airlines

Sat 1/2411:00 amSEA - KIX

1 stop16h 45mMultiple Airlines

Deal found 12/3

$837

Sat 1/177:05 amITM - SEA

2 stops23h 50mMultiple Airlines

Fri 1/2312:10 amSEA - ITM

2 stops21h 30mMultiple Airlines

Deal found 12/3

$1,032

Wed 1/219:00 amKIX - SEA

1 stop21h 55mAsiana Airlines

Fri 1/2312:10 amSEA - KIX

1 stop15h 40mAsiana Airlines

Deal found 12/3

$827

Thu 1/292:05 pmITM - SEA

2 stops25h 01mAir Canada

Sun 2/13:40 pmSEA - ITM

2 stops34h 15mAir Canada

Deal found 12/2

$908

One-way flights from Osaka to Seattle
Search for one-way flight options from Osaka to Seattle. Find affordable one-way fares based on user searches. Data last updated December 4, 2025.

Wed 12/108:25 pmKIX - SEA

2 stops34h 05mMultiple Airlines

Deal found 12/2

$364

Fri 1/239:10 pmKIX - SEA

3 stops55h 09mMultiple Airlines

Deal found 12/3

$390

Tue 12/239:10 pmKIX - SEA

3 stops50h 57mMultiple Airlines

Deal found 12/3

$410

Thu 12/1110:50 amKIX - SEA

2 stops19h 40mMultiple Airlines

Deal found 12/3

$424

Fri 12/128:00 amKIX - SEA

3 stops44h 53mMultiple Airlines

Deal found 12/3

$452

Fri 12/122:35 pmKIX - SEA

1 stop34h 25mHainan Airlines

Deal found 12/3

$454

Tue 12/2312:30 pmITM - SEA

3 stops35h 37mMultiple Airlines

Deal found 12/3

$560

Fri 12/122:05 pmITM - SEA

2 stops22h 11mMultiple Airlines

Deal found 12/3

$569

Fri 1/232:40 pmITM - SEA

1 stop13h 00mAlaska Airlines

Deal found 12/3

$585

Fri 1/232:40 pmITM - SEA

2 stops16h 51mMultiple Airlines

Deal found 12/3

$599

Sat 4/188:15 pmITM - SEA

2 stops39h 15mMultiple Airlines

Deal found 12/1

$612

Fri 4/248:10 pmITM - SEA

3 stops40h 25mMultiple Airlines

Deal found 12/3

$661

Find flight deals from Osaka to Seattle

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Round-trip from	$737 (Alaska Airlines)
One-way from	$364 (Kiwi.com)
Popular in	September
Cheapest in	May
Average price	$874

Provider with most accurate pricing for Osaka (OSA)-Seattle/Tacoma Intl flight deals.

Search Deals

Provider most trusted by Cheapflights users for Osaka (OSA)-Seattle/Tacoma Intl flights.

Search Deals

From Osaka (OSA) to Seattle/Tacoma Intl

Search Deals

One-way flight from Osaka (OSA) to Seattle/Tacoma Intl

Search Deals

Highest demand for flights based on searches. 8% potential increase in price ($89 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($21 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in December 2025

Search Deals

Fly from

Fly to

Route

Depart

Return

Price

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 12/17

8:45 pm-11:46 pm

1 stop20h 01m

Seattle/Tacoma Intl

Fri 1/9

5:45 pm-6:45 pm

1 stop32h 00m

$737

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Fri 1/16

8:45 pm-4:31 pm

2 stops36h 46m

Seattle/Tacoma Intl

Fri 1/23

11:00 am-8:45 pm

1 stop16h 45m

$786

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 1/17

10:30 am-1:55 pm

1 stop20h 25m

Seattle/Tacoma Intl

Fri 1/23

12:10 am-8:55 pm

1 stop27h 45m

$787

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 12/17

7:50 am-7:16 pm

2 stops28h 26m

Seattle/Tacoma Intl

Fri 1/9

10:05 am-8:35 pm

2 stops17h 30m

$809

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 4/29

1:10 pm-7:30 pm

1 stop22h 20m

Seattle/Tacoma Intl

Mon 5/4

1:50 am-12:10 pm

1 stop18h 20m

$827

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Wed 1/21

9:00 am-1:55 pm

1 stop21h 55m

Seattle/Tacoma Intl

Fri 1/23

12:10 am-8:50 am

1 stop15h 40m

$827

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Sat 1/17

2:15 pm-10:06 pm

2 stops24h 51m

Seattle/Tacoma Intl

Sat 1/24

11:00 am-8:45 pm

1 stop16h 45m

$837

OsakaSeattle

KIX - SEA

KIXSEA

Osaka Kansai Intl

Thu 12/25

9:00 am-1:55 pm

1 stop21h 55m

Seattle/Tacoma Intl

Mon 12/29

12:10 am-8:50 am

1 stop15h 40m

$838

OsakaSeattle

ITM - SEA

ITMSEA

Osaka Itami

Wed 12/17

4:30 pm-6:20 pm

2 stops18h 50m

Seattle/Tacoma Intl

Fri 1/9

6:00 am-7:20 pm

2 stops20h 20m

$885

OsakaSeattle

ITM - SEA

ITMSEA

Osaka Itami

Thu 1/29

2:05 pm-10:06 pm

2 stops25h 01m

Seattle/Tacoma Intl

Sun 2/1

3:40 pm-6:55 pm

2 stops34h 15m

$908

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/3

Showing 1-10 of 32 results

Compare providers for flights from Osaka to Seattle

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.

Provider	Price Accuracy	Trust Score*
eDreams	Price Accuracy3 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
Expedia	Price Accuracy2 stars	Trust 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?

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.

How much does it cost to fly round-trip from Osaka to Seattle?

Reviews of airlines servicing Seattle

See what other customers who have flown with STARLUX Airlines, 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.

STARLUX Airlines

8.9

Very good

239 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

STARLUX Airlines

8.9

Very good

239 reviews

STARLUX Airlines

8.9

Very good

239 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

EVA Air

8.5

Very good

1,292 reviews

STARLUX Airlines

8.9

Very good

239 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

ANA

8.4

Very good

1,017 reviews

STARLUX Airlines

8.9

Very good

239 reviews

Reviews

1 / 9

10.0

Excellent

Chad,Nov 2025

TPE - SEA

Starlux Airlines was amazing. No complaints on anything with them

Related info for your journey

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 $885, Alaska Airlines can have you in Seattle from Osaka in 18h 50m. Osaka and Seattle are separated by a distance of 4999 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 EVA Air. According to our data, you can fly for as low as $309. Users have also found prices from $420 and $424 on Korean Air and Air Canada, 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

Tacoma

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Puyallup

Kirkland

Kent

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Cle Elum

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Leavenworth

Fife

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Shoreline

Centralia

Federal Way

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$364+ 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 12/10. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Osaka to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from Osaka to Seattle

Cheapest flights from Osaka to SeattleExplore 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 4, 2025.

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 4, 2025.

Find flight deals from Osaka to Seattle

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Cheapflights Fare Finder

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

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.

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.

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 December 4, 2025.

How much does it cost to fly round-trip from Osaka to Seattle?

Reviews of airlines servicing Seattle

See what other customers who have flown with STARLUX Airlines, 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.

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?

How long is the flight from Osaka to Seattle?

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

Can I find deals for flights from Osaka to Seattle that include hotel bookings?

How can I find direct flights from Osaka to Seattle?

Can I find deals for business class flights from Osaka to Seattle?

Traveling to a place near Seattle?

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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 4, 2025.