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

Air Canada, ANA, and Japan Airlines are the most popular carriers operating from Washington to Osaka

What airlines fly to Osaka?

ANA, Asiana Airlines and Air Canada are the top three most popular airlines that fly to Osaka from State of Washington according to our data. ANA is the first choice among our users, with 69% of people opting to fly with this airline when traveling to Osaka. Keep in mind that there are 9 different airlines that fly to Osaka on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Osaka?

Average flight duration from State of Washington to Osaka depends on which airport you fly into and out of. Flying from Seattle to Osaka Kansai Intl Airport is 13h 35m on average, while flying from Pasco to Osaka Kansai Intl Airport is 17h 40m on average. Osaka Kansai Intl Airport is the most popular airport in Osaka.

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?

There are 10 operators available for flights from Washington to Osaka as of December 2025.

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.

$287 Cheap Flights from Washington to Osaka in 2025/26

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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.

8:00 pm - 6:55 pm

SEA

ITM

29h 55m2 stops

2:05 pm - 7:16 pm

ITM

SEA

22h 11m2 stops

$600Air Canada

Tue, Feb 3 - Mon, Feb 9

5:50 am - 8:35 pm

SEA

KIX

21h 45m2 stops

10:50 am - 7:16 pm

KIX

SEA

25h 26m2 stops

$607Multiple Airlines

Tue, Jan 20 - Tue, Jan 27

10:05 am - 8:35 pm

SEA

KIX

17h 30m2 stops

10:50 am - 7:16 pm

KIX

SEA

25h 26m2 stops

$608Multiple Airlines

Sun, Jan 18 - Tue, Jan 27

8:00 pm - 6:55 pm

SEA

ITM

29h 55m2 stops

2:05 pm - 2:31 pm

ITM

SEA

17h 26m2 stops

$610Air Canada

Wed, Feb 18 - Wed, Feb 25

6:00 am - 8:05 pm

SEA

ITM

21h 05m2 stops

2:40 pm - 8:58 am

ITM

SEA

35h 18m2 stops

$618Japan Airlines

Sat, Jan 10 - Sat, Jan 17

12:30 pm - 7:55 pm

SEA

ITM

14h 25m1 stop

2:40 pm - 9:55 am

ITM

SEA

12h 15m1 stop

$620Japan Airlines

Mon, Jan 19 - Mon, Jan 26

5:50 am - 8:35 pm

SEA

KIX

21h 45m2 stops

8:25 pm - 2:31 pm

KIX

SEA

35h 06m2 stops

$620Multiple Airlines

Mon, Jan 26 - Mon, Feb 2

11:00 am - 10:10 am

SEA

UKB

30h 10m1 stop

11:10 am - 9:00 am

UKB

SEA

14h 50m1 stop

$626Korean Air

Mon, Jan 19 - Mon, Jan 26

11:00 am - 8:45 pm

SEA

KIX

16h 45m1 stop

9:00 am - 9:00 am

KIX

SEA

17h 00m1 stop

$628Korean Air

Mon, Jan 19 - Mon, Jan 26

12:10 am - 6:05 pm

SEA

KIX

24h 55m1 stop

9:00 am - 1:55 pm

KIX

SEA

21h 55m1 stop

$634Asiana Airlines

Mon, Feb 16 - Mon, Mar 2

Asiana Airlines flights from State of Washington to Osaka

Our best Asiana Airlines deals on State of Washington to Osaka flight tickets

Asiana Airlines

Feb 16

SEA12:10 amSeattle/Tacoma Intl

24h 55m

1 stop

KIX6:05 pmOsaka Kansai Intl

Mar 2

KIX9:00 amOsaka Kansai Intl

21h 55m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$634

Find similar

Asiana Airlines

Feb 14

SEA12:10 amSeattle/Tacoma Intl

24h 55m

1 stop

KIX6:05 pmOsaka Kansai Intl

Feb 22

KIX9:00 amOsaka Kansai Intl

21h 55m

1 stop

SEA1:55 pmSeattle/Tacoma Intl

$643

Find similar

Asiana Airlines

Mar 31

SEA12:10 amSeattle/Tacoma Intl

28h 45m

1 stop

KIX8:55 pmOsaka Kansai Intl

Apr 12

KIX7:25 pmOsaka Kansai Intl

35h 30m

1 stop

SEA2:55 pmSeattle/Tacoma Intl

$644

Find similar

United Airlines flights from State of Washington to Osaka

Our best United Airlines deals on State of Washington to Osaka flight tickets

United Airlines

Jan 29

SEA6:18 amSeattle/Tacoma Intl

17h 22m

1 stop

KIX4:40 pmOsaka Kansai Intl

Mar 2

KIX8:20 amOsaka Kansai Intl

22h 00m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$646

Find similar

United Airlines

Jan 29

SEA6:18 amSeattle/Tacoma Intl

17h 22m

1 stop

KIX4:40 pmOsaka Kansai Intl

Feb 27

KIX8:20 amOsaka Kansai Intl

22h 00m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$654

Find similar

United Airlines

Feb 4

SEA1:17 pmSeattle/Tacoma Intl

37h 08m

2 stops

KIX7:25 pmOsaka Kansai Intl

Mar 3

KIX8:20 amOsaka Kansai Intl

22h 00m

1 stop

SEA1:20 pmSeattle/Tacoma Intl

$658

Find similar

Fly from

Fly to

Route

Depart

Return

Price

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Tue 2/3

8:00 pm-6:55 pm

2 stops29h 55m

Osaka Itami

Mon 2/9

2:05 pm-7:16 pm

2 stops22h 11m

$600

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Tue 1/20

5:50 am-8:35 pm

2 stops21h 45m

Osaka Kansai Intl

Tue 1/27

10:50 am-7:16 pm

2 stops25h 26m

$607

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Sun 1/18

10:05 am-8:35 pm

2 stops17h 30m

Osaka Kansai Intl

Tue 1/27

10:50 am-7:16 pm

2 stops25h 26m

$608

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Wed 2/18

8:00 pm-6:55 pm

2 stops29h 55m

Osaka Itami

Wed 2/25

2:05 pm-2:31 pm

2 stops17h 26m

$610

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Sat 1/10

6:00 am-8:05 pm

2 stops21h 05m

Osaka Itami

Sat 1/17

2:40 pm-8:58 am

2 stops35h 18m

$618

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

Mon 1/19

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

Mon 1/26

2:40 pm-9:55 am

1 stop12h 15m

$620

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 1/26

5:50 am-8:35 pm

2 stops21h 45m

Osaka Kansai Intl

Mon 2/2

8:25 pm-2:31 pm

2 stops35h 06m

$620

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

Mon 1/19

11:00 am-10:10 am

1 stop30h 10m

Kobe

Mon 1/26

11:10 am-9:00 am

1 stop14h 50m

$626

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 1/19

11:00 am-8:45 pm

1 stop16h 45m

Osaka Kansai Intl

Mon 1/26

9:00 am-9:00 am

1 stop17h 00m

$628

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

Mon 2/16

12:10 am-6:05 pm

1 stop24h 55m

Osaka Kansai Intl

Mon 3/2

9:00 am-1:55 pm

1 stop21h 55m

$634

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

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?

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 $679. 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 $710.

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

According to our data, Tuesday is the cheapest day to fly to Osaka from State of Washington. The lowest ticket price found for a Tuesday departure recently was $1,071. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. When flying out on a Thursday, the most expensive travel day of the week, you can expect to see flight prices from State of Washington to Osaka for around $1,160.

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

Our data shows that the cheapest State of Washington to Osaka flights are usually those with departure times in the evening. Our users have found flights to Osaka in the evening for as low as $994. Flights to Osaka are more costly in the afternoon, with an average ticket price of $1,459. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

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 $908 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 $762 on momondo.

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?
There are 10 operators available for flights from Washington to Osaka as of December 2025.
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 Airlines	PriceFrom $370	Free Cancellation	Rating 8.0 11,450 reviews	Search Alaska Airlines flights
Asiana Airlines	PriceFrom $595	Free Cancellation	Rating 8.2 493 reviews	Search Asiana Airlines flights
United Airlines	PriceFrom $647	Free Cancellation	Rating 7.4 9,092 reviews	Search United Airlines flights
ANA	PriceFrom $657	Free Cancellation	Rating 8.4 1,023 reviews	Search ANA flights
Air Canada	PriceFrom $669	Free Cancellation	Rating 7.1 10,525 reviews	Search Air Canada flights
Japan Airlines	PriceFrom $697	Free Cancellation	Rating 8.3 1,655 reviews	Search Japan Airlines flights
Korean Air	PriceFrom $716	Free Cancellation	Rating 8.4 1,186 reviews	Search Korean Air flights
China Airlines	PriceFrom $1,056	Free Cancellation	Rating 8.3 791 reviews	Search China Airlines flights
STARLUX Airlines	PriceFrom $1,095	Free Cancellation	Rating 8.9 243 reviews	Search STARLUX Airlines flights

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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.