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Cheap flights from Washington to Osaka from $313

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 3/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
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.
ANA Logo
7:15 am - 4:40 pm
SEA
-
KIX
16h 25m
1 stop
ANA Logo
6:45 am - 1:20 pm
KIX
-
SEA
23h 35m
1 stop
$585ANA
Fri, Feb 27 - Sat, Mar 7
Air Canada Logo
8:00 pm - 4:25 pm
SEA
-
KIX
28h 25m
1 stop
Air Canada Logo
6:00 pm - 10:10 pm
KIX
-
SEA
20h 10m
1 stop
$602Air Canada
Sat, Apr 18 - Thu, Apr 23
Asiana Airlines Logo
12:55 am - 9:40 am
SEA
-
KIX
16h 45m
1 stop
Asiana Airlines Logo
7:25 pm - 2:55 pm
KIX
-
SEA
35h 30m
1 stop
$623Asiana Airlines
Sun, Apr 12 - Mon, Apr 27
Asiana Airlines Logo
12:55 am - 9:40 am
SEA
-
KIX
16h 45m
1 stop
Asiana Airlines Logo
7:25 pm - 2:55 pm
KIX
-
SEA
35h 30m
1 stop
$624Asiana Airlines
Sun, Apr 12 - Mon, Apr 27
Japan Airlines Logo
12:30 pm - 7:55 pm
SEA
-
ITM
14h 25m
1 stop
Japan Airlines Logo
2:40 pm - 9:55 am
ITM
-
SEA
12h 15m
1 stop
$634Japan Airlines
Wed, Feb 18 - Wed, Feb 25
Multiple Airlines Logo
9:55 am - 8:45 am
SEA
-
KIX
29h 50m
2 stops
Multiple Airlines Logo
7:25 pm - 3:01 pm
KIX
-
SEA
12h 36m
1 stop
$634Multiple Airlines
Fri, Feb 20 - Mon, Mar 2
Japan Airlines Logo
8:31 am - 7:50 pm
SEA
-
ITM
19h 19m
2 stops
Japan Airlines Logo
11:30 am - 4:17 pm
ITM
-
SEA
20h 47m
2 stops
$639Japan Airlines
Wed, Apr 22 - Wed, Apr 29
Multiple Airlines Logo
6:57 pm - 5:40 pm
PDX
-
KIX
29h 43m
2 stops
Multiple Airlines Logo
7:25 pm - 6:30 pm
KIX
-
PDX
15h 05m
1 stop
$681Multiple Airlines
Sun, Mar 1 - Tue, Mar 10
United Airlines Logo
6:17 am - 4:40 pm
PSC
-
KIX
17h 23m
1 stop
United Airlines Logo
6:35 pm - 11:36 am
KIX
-
PSC
34h 01m
1 stop
$726United Airlines
Thu, Feb 19 - Mon, Feb 23
United Airlines Logo
6:17 am - 4:40 pm
PSC
-
KIX
17h 23m
1 stop
United Airlines Logo
6:35 pm - 8:50 pm
KIX
-
PSC
43h 15m
2 stops
$737United Airlines
Thu, Feb 19 - Mon, Feb 23

Asiana Airlines flights from State of Washington to Osaka

Our best Asiana Airlines deals on State of Washington to Osaka flight tickets
Asiana Airlines
Apr 12
SEA12:55 amSeattle/Tacoma Intl
16h 45m
1 stop
KIX9:40 amOsaka Kansai Intl
Apr 27
KIX7:25 pmOsaka Kansai Intl
35h 30m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$623
Asiana Airlines
Apr 12
SEA12:55 amSeattle/Tacoma Intl
16h 45m
1 stop
KIX9:40 amOsaka Kansai Intl
Apr 27
KIX7:25 pmOsaka Kansai Intl
35h 30m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$624
Asiana Airlines
Mar 7
SEA12:10 amSeattle/Tacoma Intl
15h 40m
1 stop
KIX8:50 amOsaka Kansai Intl
Mar 11
KIX10:30 amOsaka Kansai Intl
20h 25m
1 stop
SEA2:55 pmSeattle/Tacoma Intl
$673

Cathay Pacific flights from State of Washington to Osaka

Our best Cathay Pacific deals on State of Washington to Osaka flight tickets
Cathay Pacific
Feb 1
PDX6:22 pmPortland
51h 33m
3 stops
KIX2:55 pmOsaka Kansai Intl
Feb 18
KIX10:00 amOsaka Kansai Intl
27h 34m
2 stops
PDX8:34 pmPortland
$1,273
Cathay Pacific
Mar 15
PSC7:00 amPasco Tri Cities
39h 55m
3 stops
KIX2:55 pmOsaka Kansai Intl
Mar 22
KIX6:05 pmOsaka Kansai Intl
44h 23m
2 stops
PSC10:28 pmPasco Tri Cities
$1,383

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Osaka 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 January 29, 2026.
Use the filters below to find and compare flights from Washington to Osaka that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 2/27

7:15 am-4:40 pm

1 stop16h 25m

Osaka Kansai Intl

Sat 3/7

6:45 am-1:20 pm

1 stop23h 35m

$585

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sat 4/18

8:00 pm-4:25 pm

1 stop28h 25m

Osaka Kansai Intl

Thu 4/23

6:00 pm-10:10 pm

1 stop20h 10m

$602

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 4/12

12:55 am-9:40 am

1 stop16h 45m

Osaka Kansai Intl

Mon 4/27

7:25 pm-2:55 pm

1 stop35h 30m

$623

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 4/12

12:55 am-9:40 am

1 stop16h 45m

Osaka Kansai Intl

Mon 4/27

7:25 pm-2:55 pm

1 stop35h 30m

$624

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Wed 2/18

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

Wed 2/25

2:40 pm-9:55 am

1 stop12h 15m

$634

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Fri 2/20

9:55 am-8:45 am

2 stops29h 50m

Osaka Kansai Intl

Mon 3/2

7:25 pm-3:01 pm

1 stop12h 36m

$634

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Wed 4/22

8:31 am-7:50 pm

2 stops19h 19m

Osaka Itami

Wed 4/29

11:30 am-4:17 pm

2 stops20h 47m

$639

PortlandOsaka

PDX - KIX

PDXKIX

Portland

Sun 3/1

6:57 pm-5:40 pm

2 stops29h 43m

Osaka Kansai Intl

Tue 3/10

7:25 pm-6:30 pm

1 stop15h 05m

$681

PascoOsaka

PSC - KIX

PSCKIX

Pasco Tri Cities

Thu 2/19

6:17 am-4:40 pm

1 stop17h 23m

Osaka Kansai Intl

Mon 2/23

6:35 pm-11:36 am

1 stop34h 01m

$726

PascoOsaka

PSC - KIX

PSCKIX

Pasco Tri Cities

Thu 2/19

6:17 am-4:40 pm

1 stop17h 23m

Osaka Kansai Intl

Mon 2/23

6:35 pm-8:50 pm

2 stops43h 15m

$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

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?

In general, January is the cheapest month to fly from State of Washington to Osaka. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $677. If you are unable to visit Osaka during the month of January, then departing from State of Washington during the month February is also very affordable. Most momondo users find prices during this month for around $679.

How far in advance should I book a flight to Osaka?

You are more likely to see cheaper flights to Osaka from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Osaka for around $865 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Osaka from State of Washington for as low as $697 on momondo.

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

You could potentially save up to 57% on your flight if you consider stops on a State of Washington to Osaka flight.

Cheap State of Washington to Osaka flight deals and tips

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

Fastest flight time

13h 15m

Direct flights

None
The fastest flight from State of Washington to Osaka takes 13h 15m
There are no direct flights from State of Washington to Osaka. There are no popular flight routes from State of Washington to Osaka.
Search flight deals

  • When did momondo last update prices for flights from Washington to Osaka?

    Prices for flights from Washington to Osaka are updated daily.

  • How many operators does momondo search for flights from Washington to Osaka?

  • How old do you have to be to fly from Washington to Osaka?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Osaka.

  • What documentation or ID do you need to fly to Osaka?

    The travel and health documents you'll need for your trip to Osaka may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Osaka. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from State of Washington to Osaka

Compare and see reviews for airlines that fly from State of Washington to Osaka with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $370Free CancellationRating
8.0
11,808 reviews
Search Alaska Airlines flights
Asiana AirlinesPriceFrom $595Free CancellationRating
8.1
501 reviews
Search Asiana Airlines flights
United AirlinesPriceFrom $647Free CancellationRating
7.4
9,215 reviews
Search United Airlines flights
ANAPriceFrom $650Free CancellationRating
8.4
1,078 reviews
Search ANA flights
Korean AirPriceFrom $660Free CancellationRating
8.4
1,188 reviews
Search Korean Air flights
Air CanadaPriceFrom $669Free CancellationRating
7.1
10,667 reviews
Search Air Canada flights
Japan AirlinesPriceFrom $697Free CancellationRating
8.3
1,691 reviews
Search Japan Airlines flights
STARLUX AirlinesPriceFrom $934Free CancellationRating
8.9
268 reviews
Search STARLUX Airlines flights
EVA AirPriceFrom $975Free CancellationRating
8.4
1,334 reviews
Search EVA Air flights

Traveling to a place near Osaka?

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

Why use momondo?

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

Finding the right flight to Osaka from Washington is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to Osaka quick and easy, saving you time and money.

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 helps you find the best flight between Washington and Osaka by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

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

Of course. momondo tracks the price of Washington to Osaka flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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Find better results for your trip to Japan

Fly into one of these airports located in Osaka

Airports listed have a maximum distance of 22.5 mi from Osaka
Osaka Itami Airport
Osaka Kansai Intl Airport