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Cheap flights from Washington to Osaka from $294

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 1/29. 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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0 bags

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Find the cheapest flights from Washington to Osaka

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
8:00 pm - 8:35 pm
SEA
-
KIX
31h 35m2 stops
Multiple Airlines Logo
10:50 am - 7:16 pm
KIX
-
SEA
25h 26m2 stops
$607Multiple Airlines
Sun, Jan 18 - Tue, Jan 27
Multiple Airlines Logo
5:50 am - 8:35 pm
SEA
-
KIX
21h 45m2 stops
Multiple Airlines Logo
10:50 am - 7:16 pm
KIX
-
SEA
25h 26m2 stops
$608Multiple Airlines
Wed, Jan 21 - Wed, Jan 28
Philippine Airlines Logo
11:10 pm - 7:35 pm
SEA
-
KIX
28h 25m1 stop
Philippine Airlines Logo
10:25 am - 8:05 pm
KIX
-
SEA
25h 40m1 stop
$613Philippine Airlines
Thu, May 14 - Tue, May 26
Multiple Airlines Logo
6:20 am - 6:50 pm
SEA
-
KIX
19h 30m1 stop
Multiple Airlines Logo
7:00 am - 9:55 am
KIX
-
SEA
19h 55m1 stop
$623Multiple Airlines
Thu, Jan 22 - Thu, Jan 29
Japan Airlines Logo
8:25 am - 8:25 am
SEA
-
KIX
31h 00m2 stops
Japan Airlines Logo
3:00 pm - 8:58 am
KIX
-
SEA
34h 58m2 stops
$624Japan Airlines
Thu, Jan 22 - Thu, Jan 29
Asiana Airlines Logo
12:10 am - 9:40 am
SEA
-
KIX
17h 30m1 stop
Asiana Airlines Logo
9:10 am - 2:55 pm
KIX
-
SEA
21h 45m1 stop
$626Asiana Airlines
Sun, Apr 12 - Mon, Apr 27
Korean Air Logo
11:00 am - 12:50 pm
SEA
-
KIX
32h 50m1 stop
Korean Air Logo
9:00 am - 9:00 am
KIX
-
SEA
17h 00m1 stop
$628Korean Air
Sun, Feb 1 - Sun, Feb 8
Japan Airlines Logo
6:00 am - 6:50 pm
SEA
-
KIX
19h 50m1 stop
Japan Airlines Logo
8:00 am - 9:55 am
KIX
-
SEA
18h 55m1 stop
$629Japan Airlines
Tue, Jan 13 - Tue, Jan 20
Multiple Airlines Logo
8:06 am - 6:50 pm
SEA
-
KIX
17h 44m1 stop
Multiple Airlines Logo
7:00 am - 9:55 am
KIX
-
SEA
19h 55m1 stop
$630Multiple Airlines
Wed, Jan 21 - Tue, Feb 3
Korean Air Logo
5:05 am - 12:50 pm
PSC
-
KIX
38h 45m2 stops
Korean Air Logo
6:10 pm - 4:23 pm
KIX
-
PSC
39h 13m2 stops
$737Korean Air
Sun, Jan 25 - Thu, Jan 29

Japan Airlines flights from State of Washington to Osaka Kansai Intl Airport

Our best Japan Airlines deals on State of Washington to Osaka Kansai Intl Airport flight tickets
Japan Airlines
Jan 22
SEA8:25 amSeattle/Tacoma Intl
31h 00m
2 stops
KIX8:25 amOsaka Kansai Intl
Jan 29
KIX3:00 pmOsaka Kansai Intl
34h 58m
2 stops
SEA8:58 amSeattle/Tacoma Intl
$624
Find similar
Japan Airlines
Jan 13
SEA6:00 amSeattle/Tacoma Intl
19h 50m
1 stop
KIX6:50 pmOsaka Kansai Intl
Jan 20
KIX8:00 amOsaka Kansai Intl
18h 55m
1 stop
SEA9:55 amSeattle/Tacoma Intl
$629
Find similar
Japan Airlines
Jan 21
SEA12:30 pmSeattle/Tacoma Intl
16h 50m
1 stop
KIX10:20 pmOsaka Kansai Intl
Jan 28
KIX10:50 amOsaka Kansai Intl
16h 05m
1 stop
SEA9:55 amSeattle/Tacoma Intl
$631
Find similar

ANA flights from State of Washington to Osaka Kansai Intl Airport

Our best ANA deals on State of Washington to Osaka Kansai Intl Airport flight tickets
ANA
Jan 15
SEA6:03 amSeattle/Tacoma Intl
17h 37m
1 stop
KIX4:40 pmOsaka Kansai Intl
Jan 22
KIX5:35 pmOsaka Kansai Intl
12h 45m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$636
Find similar
ANA
Jan 10
SEA6:03 amSeattle/Tacoma Intl
17h 37m
1 stop
KIX4:40 pmOsaka Kansai Intl
Jan 23
KIX9:10 pmOsaka Kansai Intl
33h 10m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$639
Find similar
ANA
Jan 10
SEA6:03 amSeattle/Tacoma Intl
22h 47m
2 stops
KIX9:50 pmOsaka Kansai Intl
Jan 23
KIX9:10 pmOsaka Kansai Intl
33h 10m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$640
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Osaka Kansai Intl Airport 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, momondo users made 832,500 searches. Data last updated December 25, 2025.
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

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 1/18

8:00 pm-8:35 pm

2 stops31h 35m

Osaka Kansai Intl

Tue 1/27

10:50 am-7:16 pm

2 stops25h 26m

$607

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 1/21

5:50 am-8:35 pm

2 stops21h 45m

Osaka Kansai Intl

Wed 1/28

10:50 am-7:16 pm

2 stops25h 26m

$608

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Thu 5/14

11:10 pm-7:35 pm

1 stop28h 25m

Osaka Kansai Intl

Tue 5/26

10:25 am-8:05 pm

1 stop25h 40m

$613

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Thu 1/22

6:20 am-6:50 pm

1 stop19h 30m

Osaka Kansai Intl

Thu 1/29

7:00 am-9:55 am

1 stop19h 55m

$623

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Thu 1/22

8:25 am-8:25 am

2 stops31h 00m

Osaka Kansai Intl

Thu 1/29

3:00 pm-8:58 am

2 stops34h 58m

$624

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 4/12

12:10 am-9:40 am

1 stop17h 30m

Osaka Kansai Intl

Mon 4/27

9:10 am-2:55 pm

1 stop21h 45m

$626

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 2/1

11:00 am-12:50 pm

1 stop32h 50m

Osaka Kansai Intl

Sun 2/8

9:00 am-9:00 am

1 stop17h 00m

$628

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 1/13

6:00 am-6:50 pm

1 stop19h 50m

Osaka Kansai Intl

Tue 1/20

8:00 am-9:55 am

1 stop18h 55m

$629

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Wed 1/21

8:06 am-6:50 pm

1 stop17h 44m

Osaka Kansai Intl

Tue 2/3

7:00 am-9:55 am

1 stop19h 55m

$630

PascoOsaka

PSC - KIX

PSCKIX

Pasco Tri Cities

Sun 1/25

5:05 am-12:50 pm

2 stops38h 45m

Osaka Kansai Intl

Thu 1/29

6:10 pm-4:23 pm

2 stops39h 13m

$737

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Osaka from

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

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

In general, November 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 $757. If you aren’t able to travel during the month of November, then book flights to Osaka Kansai Intl Airport from State of Washington during September instead. Flights to Osaka Kansai Intl Airport in September, while not as cheap as those in November, still average around $783.

What is the cheapest day to depart on your flight to Osaka Kansai Intl Airport?

The cheapest day to depart from State of Washington to Osaka Kansai Intl Airport is on a Thursday. Travelers who choose to depart for Osaka Kansai Intl Airport on a Thursday will often find tickets for as low as $999. Flights from State of Washington to Osaka Kansai Intl Airport on a Sunday will generally be more expensive and average around $1,405. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Osaka Kansai Intl Airport?

Our data shows that the cheapest State of Washington to Osaka Kansai Intl Airport flights are usually those with departure times in the morning. Our users have found flights to Osaka Kansai Intl Airport in the morning for as low as $1,065. If you have a flexible travel schedule, then try to avoid flying in the afternoon when prices are $1,566 on average. Flights to Osaka Kansai Intl Airport from State of Washington in the afternoon are generally more expensive because this time of day is more convenient for travelers’ schedules.

How far in advance should I book a flight 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 $910 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 $762 on momondo.

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

15h 05m

Direct flights

None
The fastest flight from State of Washington to Osaka Kansai Intl Airport takes 15h 05m
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

  • 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?

  • 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 AirlinesPriceFrom $370Free CancellationRating
8.0
11,530 reviews
Search Alaska Airlines flights
Asiana AirlinesPriceFrom $595Free CancellationRating
8.2
500 reviews
Search Asiana Airlines flights
United AirlinesPriceFrom $647Free CancellationRating
7.4
9,114 reviews
Search United Airlines flights
ANAPriceFrom $650Free CancellationRating
8.4
1,043 reviews
Search ANA flights
Korean AirPriceFrom $660Free CancellationRating
8.4
1,185 reviews
Search Korean Air flights
Air CanadaPriceFrom $669Free CancellationRating
7.1
10,555 reviews
Search Air Canada flights
STARLUX AirlinesPriceFrom $934Free CancellationRating
8.9
250 reviews
Search STARLUX Airlines flights
China AirlinesPriceFrom $1,056Free CancellationRating
8.3
792 reviews
Search China Airlines flights

Traveling to a place near Osaka?

Book flights to Osaka if you plan to visit one of these locations
Nara
Izumisano
Himeji
Nishinomiya

Why use momondo?

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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