What is the cheapest airline that flies from Washington to Osaka Kansai Intl?

Air Canada, Cathay Pacific, and Hainan Airlines are the most popular carriers operating from Washington to Osaka Kansai Intl

How long does it take to fly to Osaka Kansai Intl Airport?

If you’re flying from a popular airport in State of Washington, such as Seattle or Pasco, and flying into Osaka Kansai Intl Airport, then you can expect flight times to average 17h 30m and 36h 25m, respectively.

What airlines fly to Osaka Kansai Intl Airport?

ANA, Asiana Airlines and Air Canada are the top three most popular airlines that fly to Osaka Kansai Intl Airport from State of Washington according to our data. ANA is the first choice among our users, with 74% of people opting to fly with this airline when traveling to Osaka Kansai Intl Airport. Keep in mind that there are 4 different airlines that fly to Osaka Kansai Intl Airport on a routine basis, so you have a few additional options to choose from.

When did momondo last update prices for flights from Washington to Osaka Kansai Intl Airport?

Prices for flights from Washington to Osaka Kansai Intl Airport were last updated today.

How many operators does momondo search for flights from Washington to Osaka Kansai Intl Airport?

As of August 2026, there are 7 operators available to choose from for flights from Washington to Osaka Kansai Intl Airport.

How old do you have to be to fly from Washington to Osaka Kansai Intl Airport?

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Osaka Kansai Intl Airport.

What documentation or ID do you need to fly to Osaka Kansai Intl Airport?

The required travel and health documents for your Osaka Kansai Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Osaka Kansai Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$415 Cheap Flights from State of Washington to Osaka Kansai Intl Airport in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Washington to Osaka

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

3:00 pm - 4:25 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

33h 25m1 stop Vancouver Intl

6:00 pm - 10:05 amKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

32h 05m1 stop Vancouver Intl

$788Air Canada

Sat, Aug 29 - Mon, Sep 14

7:45 pm - 4:25 pmPDX Portland-KIX Osaka Kansai Intl

28h 40m1 stop Vancouver Intl

9:20 am - 7:11 pmKIX Osaka Kansai Intl-PDX Portland

25h 51m2 stops Tokyo Haneda Vancouver Intl

$810Air Canada

Thu, Aug 27 - Thu, Sep 10

5:50 am - 8:50 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

23h 00m2 stops Vancouver Intl Tokyo Narita

6:00 pm - 10:42 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

20h 42m1 stop Vancouver Intl

$831Multiple Airlines

Mon, Aug 31 - Tue, Oct 20

7:00 am - 8:35 pmPDX Portland-KIX Osaka Kansai Intl

20h 35m2 stops Vancouver Intl Tokyo Narita

3:25 pm - 2:41 pmKIX Osaka Kansai Intl-PDX Portland

16h 16m2 stops Sapporo Chitose Vancouver Intl

$833Multiple Airlines

Thu, Feb 4 - Fri, Feb 12

12:10 am - 9:00 amSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

16h 50m1 stop Incheon Intl

7:45 pm - 3:15 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

35h 30m1 stop Incheon Intl

$933Asiana Airlines

Mon, Oct 5 - Wed, Oct 14

12:10 am - 9:00 amSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

16h 50m1 stop Incheon Intl

7:45 pm - 3:15 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

35h 30m1 stop Incheon Intl

$933Asiana Airlines

Mon, Oct 5 - Wed, Oct 14

7:30 am - 4:45 pmPDX Portland-KIX Osaka Kansai Intl

16h 15m1 stop San Francisco

6:35 pm - 6:31 pmKIX Osaka Kansai Intl-PDX Portland

16h 56m1 stop San Francisco

$1,086ANA

Tue, Feb 9 - Thu, Feb 18

7:30 am - 4:45 pmPDX Portland-KIX Osaka Kansai Intl

16h 15m1 stop San Francisco

6:35 pm - 6:31 pmKIX Osaka Kansai Intl-PDX Portland

16h 56m1 stop San Francisco

$1,086ANA

Tue, Feb 2 - Tue, Feb 16

7:30 am - 4:45 pmPDX Portland-KIX Osaka Kansai Intl

16h 15m1 stop San Francisco

8:20 am - 8:33 pmKIX Osaka Kansai Intl-PDX Portland

29h 13m2 stops Tokyo Haneda San Francisco

$1,107United Airlines

Tue, Jan 12 - Fri, Feb 12

5:35 am - 4:45 pmPDX Portland-KIX Osaka Kansai Intl

18h 10m1 stop San Francisco

8:20 am - 12:54 amKIX Osaka Kansai Intl-PDX Portland

33h 34m2 stops Tokyo Haneda San Francisco

$1,107United Airlines

Tue, Jan 12 - Tue, Feb 9

Cheap last minute flights

Enter your travel dates to find the best prices.

7:11 am - 2:50 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

15h 39m1 stop San Francisco

4:55 pm - 11:26 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

22h 31m1 stop San Francisco

$1,097ANA

Mon, Aug 17 - Mon, Aug 24

6:30 pm - 2:50 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

28h 20m2 stops Los Angeles San Francisco

4:55 pm - 9:51 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

20h 56m2 stops San Francisco Los Angeles

$1,115United Airlines

Mon, Aug 17 - Mon, Aug 24

6:30 pm - 2:50 pmSEA Seattle/Tacoma Intl-KIX Osaka Kansai Intl

28h 20m2 stops Los Angeles San Francisco

4:55 pm - 11:26 pmKIX Osaka Kansai Intl-SEA Seattle/Tacoma Intl

22h 31m1 stop San Francisco

$1,115United Airlines

Mon, Aug 17 - Mon, Aug 24

7:00 am - 2:50 pmPDX Portland-KIX Osaka Kansai Intl

15h 50m1 stop San Francisco

4:55 pm - 6:19 pmKIX Osaka Kansai Intl-PDX Portland

17h 24m1 stop San Francisco

$1,171ANA

Fri, Aug 14 - Fri, Aug 21

8:15 am - 6:45 pmPDX Portland-KIX Osaka Kansai Intl

18h 30m2 stops Sacramento Intl Los Angeles

5:45 pm - 11:59 pmKIX Osaka Kansai Intl-PDX Portland

22h 14m1 stop Los Angeles

$1,257Multiple Airlines

Fri, Aug 14 - Fri, Aug 21

8:15 am - 6:45 pmPDX Portland-KIX Osaka Kansai Intl

18h 30m2 stops Sacramento Intl Los Angeles

5:45 pm - 8:35 pmKIX Osaka Kansai Intl-PDX Portland

18h 50m2 stops Los Angeles Santa Rosa Sonoma County

$1,257Multiple Airlines

Fri, Aug 14 - Fri, Aug 21

7:00 am - 2:50 pmPDX Portland-KIX Osaka Kansai Intl

15h 50m1 stop San Francisco

4:55 pm - 2:47 pmKIX Osaka Kansai Intl-PDX Portland

13h 52m1 stop San Francisco

$1,257ANA

Sat, Aug 15 - Mon, Aug 17

8:30 pm - 10:10 amPDX Portland-KIX Osaka Kansai Intl

21h 40m2 stops Seattle/Tacoma Intl Taipei City Taiwan Taoyuan Intl

1:10 pm - 8:31 pmKIX Osaka Kansai Intl-PDX Portland

23h 21m2 stops Taipei City Taiwan Taoyuan Intl San Francisco

$1,524Multiple Airlines

Sat, Aug 15 - Mon, Aug 17

6:35 am - 6:45 pmPDX Portland-KIX Osaka Kansai Intl

20h 10m1 stop Los Angeles

5:45 pm - 11:59 pmKIX Osaka Kansai Intl-PDX Portland

22h 14m1 stop Los Angeles

$3,417Japan Airlines

Mon, Aug 17 - Thu, Aug 27

10:29 am - 8:50 pmPDX Portland-KIX Osaka Kansai Intl

18h 21m2 stops Vancouver Intl Tokyo Narita

5:45 pm - 11:59 pmKIX Osaka Kansai Intl-PDX Portland

22h 14m1 stop Los Angeles

$3,460Japan Airlines

Mon, Aug 17 - Thu, Aug 27

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Cathay Pacific flights from State of Washington to Osaka Kansai Intl Airport

Our best Cathay Pacific deals on State of Washington to Osaka Kansai Intl Airport flight tickets

Cathay Pacific

Nov 2

SEA10:50 amSeattle/Tacoma Intl

37h 50m

1 stop

KIX5:40 pmOsaka Kansai Intl

Nov 15

KIX7:05 pmOsaka Kansai Intl

31h 05m

1 stop

SEA9:10 amSeattle/Tacoma Intl

$879

Cathay Pacific

Jan 11

SEA10:50 amSeattle/Tacoma Intl

26h 30m

1 stop

KIX6:20 amOsaka Kansai Intl

Feb 22

KIX10:00 amOsaka Kansai Intl

40h 10m

1 stop

SEA9:10 amSeattle/Tacoma Intl

$880

Cathay Pacific

Nov 10

SEA10:50 amSeattle/Tacoma Intl

37h 50m

1 stop

KIX5:40 pmOsaka Kansai Intl

Nov 17

KIX10:00 amOsaka Kansai Intl

40h 10m

1 stop

SEA9:10 amSeattle/Tacoma Intl

$884

Air Canada flights from State of Washington to Osaka Kansai Intl Airport

Our best Air Canada deals on State of Washington to Osaka Kansai Intl Airport flight tickets

Air Canada

Aug 29

SEA3:00 pmSeattle/Tacoma Intl

33h 25m

1 stop

KIX4:25 pmOsaka Kansai Intl

Sep 14

KIX6:00 pmOsaka Kansai Intl

32h 05m

1 stop

SEA10:05 amSeattle/Tacoma Intl

$788

Air Canada

Aug 27

PDX7:45 pmPortland

28h 40m

1 stop

KIX4:25 pmOsaka Kansai Intl

Sep 10

KIX9:20 amOsaka Kansai Intl

25h 51m

2 stops

PDX7:11 pmPortland

$810

Air Canada

Aug 27

PDX3:30 pmPortland

32h 55m

1 stop

KIX4:25 pmOsaka Kansai Intl

Sep 10

KIX6:00 pmOsaka Kansai Intl

17h 11m

1 stop

PDX7:11 pmPortland

$814

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Osaka Kansai Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Sat 8/29

3:00 pm-4:25 pm

1 stop33h 25m

Osaka Kansai Intl

Mon 9/14

6:00 pm-10:05 am

1 stop32h 05m

$788

PortlandOsaka

PDX Portland - KIX Osaka Kansai Intl

PDXKIX

Portland

Thu 8/27

7:45 pm-4:25 pm

1 stop28h 40m

Osaka Kansai Intl

Thu 9/10

9:20 am-7:11 pm

2 stops25h 51m

$810

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 8/31

5:50 am-8:50 pm

2 stops23h 00m

Osaka Kansai Intl

Tue 10/20

6:00 pm-10:42 pm

1 stop20h 42m

$831

PortlandOsaka

PDX Portland - KIX Osaka Kansai Intl

PDXKIX

Portland

Thu 2/4

7:00 am-8:35 pm

2 stops20h 35m

Osaka Kansai Intl

Fri 2/12

3:25 pm-2:41 pm

2 stops16h 16m

$833

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 10/5

12:10 am-9:00 am

1 stop16h 50m

Osaka Kansai Intl

Wed 10/14

7:45 pm-3:15 pm

1 stop35h 30m

$933

SeattleOsaka

SEA Seattle/Tacoma Intl - KIX Osaka Kansai Intl

SEAKIX

Seattle/Tacoma Intl

Mon 10/5

12:10 am-9:00 am

1 stop16h 50m

Osaka Kansai Intl

Wed 10/14

7:45 pm-3:15 pm

1 stop35h 30m

$933

Quickest round-trip

PortlandOsaka

PDX Portland - KIX Osaka Kansai Intl

PDXKIX

Portland

Tue 2/9

7:30 am-4:45 pm

1 stop16h 15m

Osaka Kansai Intl

Thu 2/18

6:35 pm-6:31 pm

1 stop16h 56m

$1,086

PortlandOsaka

PDX Portland - KIX Osaka Kansai Intl

PDXKIX

Portland

Tue 2/2

7:30 am-4:45 pm

1 stop16h 15m

Osaka Kansai Intl

Tue 2/16

6:35 pm-6:31 pm

1 stop16h 56m

$1,086

PortlandOsaka

PDX Portland - KIX Osaka Kansai Intl

PDXKIX

Portland

Tue 1/12

7:30 am-4:45 pm

1 stop16h 15m

Osaka Kansai Intl

Fri 2/12

8:20 am-8:33 pm

2 stops29h 13m

$1,107

PortlandOsaka

PDX Portland - KIX Osaka Kansai Intl

PDXKIX

Portland

Tue 1/12

5:35 am-4:45 pm

1 stop18h 10m

Osaka Kansai Intl

Tue 2/9

8:20 am-12:54 am

2 stops33h 34m

$1,107

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from State of Washington to Osaka Kansai Intl Airport

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

Prices

Airlines

Other information

What is the cheapest month to fly to Osaka Kansai Intl Airport?

In general, February is the cheapest month to fly from State of Washington to Osaka Kansai Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $671. If you aren’t able to travel during the month of February, then book flights to Osaka Kansai Intl Airport from State of Washington during April instead. Flights to Osaka Kansai Intl Airport in April, while not as cheap as those in February, still average around $707.

How far in advance should I book a flight from Washington to Osaka Kansai Intl Airport?

You are more likely to see cheaper flights to Osaka Kansai Intl Airport from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Osaka Kansai Intl Airport for around $896 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Osaka Kansai Intl Airport from State of Washington for as low as $650 on momondo.

Can stopping save me money on State of Washington to Osaka Kansai Intl Airport flights?

You could potentially save up to 52% on your flight if you consider stops on a State of Washington to Osaka Kansai Intl Airport flight.

Cheap State of Washington to Osaka Kansai Intl Airport flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Osaka Kansai Intl Airport

Fastest flight time	17h 20m
Direct flights	None

The fastest flight from State of Washington to Osaka Kansai Intl Airport takes 17h 20m

There are no direct flights from State of Washington to Osaka Kansai Intl Airport. There are no popular flight routes from State of Washington to Osaka Kansai Intl Airport.

Search flight deals

Frequently asked questions about flying from Washington to Osaka Kansai Intl Airport

When did momondo last update prices for flights from Washington to Osaka Kansai Intl Airport?
Prices for flights from Washington to Osaka Kansai Intl Airport were last updated today.
How many operators does momondo search for flights from Washington to Osaka Kansai Intl Airport?
As of August 2026, there are 7 operators available to choose from for flights from Washington to Osaka Kansai Intl Airport.
How old do you have to be to fly from Washington to Osaka Kansai Intl Airport?
The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Osaka Kansai Intl Airport.
What documentation or ID do you need to fly to Osaka Kansai Intl Airport?
The required travel and health documents for your Osaka Kansai Intl Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Osaka Kansai Intl Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from State of Washington to Osaka Kansai Intl Airport

Compare and see reviews for airlines that fly from State of Washington to Osaka Kansai Intl Airport with momondo

Airline	Rating	Free Cancellation	Price
Alaska Airlines	PriceFrom $370	Free Cancellation	Rating 7.9 12,807 reviews	Search Alaska Airlines flights
Asiana Airlines	PriceFrom $565	Free Cancellation	Rating 8.1 556 reviews	Search Asiana Airlines flights
ANA	PriceFrom $644	Free Cancellation	Rating 8.3 1,296 reviews	Search ANA flights
Air Canada	PriceFrom $675	Free Cancellation	Rating 7.1 11,467 reviews	Search Air Canada flights

Nara

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Himeji

Nishinomiya

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Why should I use momondo to find a flight deal from Washington to Osaka?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Washington to Osaka for you.

Can I find flights from Washington to Osaka with flexible booking policies on momondo?

Yes. All flights to Osaka from Washington on momondo can be compared and filtered by various policies on offer, including flexible booking.

How can momondo help me find flights from Washington to Osaka?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Osaka.

I’m not ready to book a flight from Washington to Osaka right now. Can momondo alert me if prices change?

If you are simply researching potential flights to Osaka, momondo offers a useful price alert feature which will track prices for flights to Osaka from Washington and alert you when they change.

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Flights to Tokyo Haneda Airportfrom $634

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Cheap flights from Washington to Osaka from $415

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Osaka departing on 8/26. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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Cathay Pacific flights from State of Washington to Osaka Kansai Intl Airport

Our best Cathay Pacific deals on State of Washington to Osaka Kansai Intl Airport flight tickets

Air Canada flights from State of Washington to Osaka Kansai Intl Airport

Our best Air Canada deals on State of Washington to Osaka Kansai Intl Airport flight tickets

momondo Fare Finder

Use the filters below to find and compare flights from Washington to Osaka Kansai Intl Airport that are best for you.

See travel insights to Osaka from

How to get the cheapest flight ticket from State of Washington to Osaka Kansai Intl Airport

What is the cheapest month to fly to Osaka Kansai Intl Airport?

How far in advance should I book a flight from Washington to Osaka Kansai Intl Airport?

Can stopping save me money on State of Washington to Osaka Kansai Intl Airport flights?

What is the cheapest airline that flies from Washington to Osaka Kansai Intl?

What airlines fly to Osaka Kansai Intl Airport?

How long does it take to fly to Osaka Kansai Intl Airport?

Cheap State of Washington to Osaka Kansai Intl Airport flight deals and tips

Fastest flight time

Direct flights

Frequently asked questions about flying from Washington to Osaka Kansai Intl Airport

Best airlines flying from State of Washington to Osaka Kansai Intl Airport

Compare and see reviews for airlines that fly from State of Washington to Osaka Kansai Intl Airport with momondo

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An easier way to manage your Osaka Kansai Intl Airport trip

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Daily price changes in your inbox - only with Price Alerts.

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