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Cheap flights from Seattle to Osaka from $444

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Seattle 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.
1 adult
0 bags

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Find the cheapest flights from Seattle to Osaka

Cheap round-trip flights

Enter your travel dates to find the best prices.
Hainan Airlines Logo
11:00 am - 12:45 pm
SEA
-
KIX
33h 45m
1 stop
Hainan Airlines Logo
2:20 pm - 9:00 am
KIX
-
SEA
34h 40m
1 stop
$876Hainan Airlines
sáb., sep. 5 - vie., sep. 11
Philippine Airlines Logo
11:10 pm - 2:10 pm
SEA
-
KIX
23h 00m
1 stop
Philippine Airlines Logo
3:15 pm - 8:05 pm
KIX
-
SEA
20h 50m
1 stop
$892Philippine Airlines
mié., sep. 9 - mié., sep. 16
Hainan Airlines Logo
11:00 am - 12:45 pm
SEA
-
KIX
33h 45m
1 stop
Hainan Airlines Logo
2:20 pm - 9:00 am
KIX
-
SEA
34h 40m
1 stop
$896Hainan Airlines
sáb., ago. 29 - lun., sep. 7
Philippine Airlines Logo
11:10 pm - 2:10 pm
SEA
-
KIX
23h 00m
1 stop
Philippine Airlines Logo
3:15 pm - 8:05 pm
KIX
-
SEA
20h 50m
1 stop
$936Philippine Airlines
mié., sep. 9 - mié., sep. 23
Cathay Pacific Logo
12:25 pm - 9:15 pm
SEA
-
KIX
40h 50m
1 stop
Cathay Pacific Logo
5:35 pm - 10:20 am
KIX
-
SEA
32h 45m
1 stop
$942Cathay Pacific
sáb., ago. 29 - dom., sep. 6
Cathay Pacific Logo
12:25 pm - 9:15 pm
SEA
-
KIX
40h 50m
1 stop
Cathay Pacific Logo
9:05 am - 10:20 am
KIX
-
SEA
17h 15m
1 stop
$951Cathay Pacific
mar., sep. 1 - jue., sep. 10
Air Canada Logo
5:40 am - 6:55 pm
SEA
-
ITM
21h 15m
2 stops
Air Canada Logo
2:00 pm - 2:22 pm
ITM
-
SEA
16h 22m
2 stops
$1,014Air Canada
mar., sep. 8 - jue., sep. 24
Japan Airlines Logo
8:35 am - 7:50 pm
SEA
-
ITM
19h 15m
2 stops
Japan Airlines Logo
7:25 am - 10:35 am
ITM
-
SEA
19h 10m
1 stop
$1,049Japan Airlines
mié., ago. 26 - mié., sep. 2
ANA Logo
4:30 pm - 7:25 am
SEA
-
ITM
22h 55m
1 stop
ANA Logo
3:40 pm - 2:25 pm
ITM
-
SEA
14h 45m
1 stop
$1,050ANA
mar., oct. 13 - mié., oct. 21
ANA Logo
4:30 pm - 9:45 pm
SEA
-
UKB
13h 15m
1 stop
ANA Logo
7:05 am - 2:25 pm
UKB
-
SEA
23h 20m
1 stop
$1,051ANA
mar., oct. 13 - mié., oct. 21

Cathay Pacific flights from Seattle to Osaka

Our best Cathay Pacific deals on Seattle to Osaka flight tickets
Cathay Pacific
Aug 29
SEA12:25 pmSeattle/Tacoma Intl
40h 50m
1 stop
KIX9:15 pmOsaka Kansai Intl
Sep 6
KIX5:35 pmOsaka Kansai Intl
32h 45m
1 stop
SEA10:20 amSeattle/Tacoma Intl
$942
Cathay Pacific
Sep 1
SEA12:25 pmSeattle/Tacoma Intl
40h 50m
1 stop
KIX9:15 pmOsaka Kansai Intl
Sep 10
KIX9:05 amOsaka Kansai Intl
17h 15m
1 stop
SEA10:20 amSeattle/Tacoma Intl
$951
Cathay Pacific
Sep 1
SEA12:25 pmSeattle/Tacoma Intl
26h 15m
1 stop
KIX6:40 amOsaka Kansai Intl
Sep 9
KIX6:30 pmOsaka Kansai Intl
31h 50m
1 stop
SEA10:20 amSeattle/Tacoma Intl
$954

ANA flights from Seattle to Osaka

Our best ANA deals on Seattle to Osaka flight tickets
ANA
Sep 8
SEA7:20 pmSeattle/Tacoma Intl
29h 05m
1 stop
KIX4:25 pmOsaka Kansai Intl
Sep 24
KIX6:00 pmOsaka Kansai Intl
16h 32m
1 stop
SEA6:32 pmSeattle/Tacoma Intl
$973
ANA
Oct 13
SEA4:30 pmSeattle/Tacoma Intl
22h 55m
1 stop
ITM7:25 amOsaka Itami
Oct 21
ITM3:40 pmOsaka Itami
14h 45m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$1,050
ANA
Oct 13
SEA4:30 pmSeattle/Tacoma Intl
13h 15m
1 stop
UKB9:45 pmKobe
Oct 21
UKB7:05 amKobe
23h 20m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$1,051

momondo Fare Finder

 
Customize your flight search to find flights from Seattle 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 mayo 18, 2026.
Use the filters below to find and compare flights from Seattle to Osaka that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

sáb. 9/5

11:00 am-12:45 pm

1 stop33h 45m

Osaka Kansai Intl

vie. 9/11

2:20 pm-9:00 am

1 stop34h 40m

$876

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

mié. 9/9

11:10 pm-2:10 pm

1 stop23h 00m

Osaka Kansai Intl

mié. 9/16

3:15 pm-8:05 pm

1 stop20h 50m

$892

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

sáb. 8/29

11:00 am-12:45 pm

1 stop33h 45m

Osaka Kansai Intl

lun. 9/7

2:20 pm-9:00 am

1 stop34h 40m

$896

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

mié. 9/9

11:10 pm-2:10 pm

1 stop23h 00m

Osaka Kansai Intl

mié. 9/23

3:15 pm-8:05 pm

1 stop20h 50m

$936

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

sáb. 8/29

12:25 pm-9:15 pm

1 stop40h 50m

Osaka Kansai Intl

dom. 9/6

5:35 pm-10:20 am

1 stop32h 45m

$942

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

mar. 9/1

12:25 pm-9:15 pm

1 stop40h 50m

Osaka Kansai Intl

jue. 9/10

9:05 am-10:20 am

1 stop17h 15m

$951

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

mar. 9/8

5:40 am-6:55 pm

2 stops21h 15m

Osaka Itami

jue. 9/24

2:00 pm-2:22 pm

2 stops16h 22m

$1,014

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

mié. 8/26

8:35 am-7:50 pm

2 stops19h 15m

Osaka Itami

mié. 9/2

7:25 am-10:35 am

1 stop19h 10m

$1,049

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

mar. 10/13

4:30 pm-7:25 am

1 stop22h 55m

Osaka Itami

mié. 10/21

3:40 pm-2:25 pm

1 stop14h 45m

$1,050
Quickest round-trip

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

mar. 10/13

4:30 pm-9:45 pm

1 stop13h 15m

Kobe

mié. 10/21

7:05 am-2:25 pm

1 stop23h 20m

$1,051

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 Seattle 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 typical price of a round-trip flight between Seattle and Osaka?

What is the cheapest month to fly to Osaka?

In general, March is the cheapest month to fly from Seattle to Osaka. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $363. If you are unable to visit Osaka during the month of March, then departing from Seattle during the month February is also very affordable. Most momondo users find prices during this month for around $370.

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

You are more likely to see cheaper flights to Osaka from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Osaka for around $844 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Osaka from Seattle for as low as $715 on momondo.

Can stopping save me money on Seattle to Osaka flights?

You could potentially save up to 43% on your flight if you consider stops on a Seattle to Osaka flight.

How have Seattle to Osaka flight prices changed over time?

As of May 2026, prices for Seattle to Osaka flights are approximately 31% cheaper when compared to flights at the same time last year.

When to book flights from Seattle to Osaka

Are you open to changing your travel dates? Check out the ideal times to fly from Seattle to Osaka according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap Seattle to Osaka (SEA to OSA) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Seattle to Osaka

Fastest flight time

13h 15m

Direct flights

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

Frequently asked questions about flying from Seattle to Osaka

  • How far is Seattle/Tacoma Intl to Osaka by plane?

    The distance between Seattle/Tacoma Intl and Osaka is about 4994.7 mi. Flights usually cover this in 13h 15m, depending on flying conditions and air traffic around both airports.

  • When did momondo last update prices for flights from Seattle/Tacoma Intl Airport to Osaka?

    Prices for flights from Seattle/Tacoma Intl Airport to Osaka are refreshed on a daily basis.

  • How many operators does momondo search for flights from Seattle/Tacoma Intl Airport to Osaka?

  • How old do you have to be to fly from Seattle/Tacoma Intl Airport to Osaka?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Seattle/Tacoma Intl Airport 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.

  • What is the most popular airline from Seattle to Osaka?

Best airlines flying from Seattle to Osaka

Compare and see reviews for airlines that fly from Seattle to Osaka with momondo
Airline
Rating
Free Cancellation
Price
Alaska AirlinesPriceFrom $370Free CancellationRating
7.9
12,378 reviews
Search Alaska Airlines flights
Asiana AirlinesPriceFrom $565Free CancellationRating
8.1
534 reviews
Search Asiana Airlines flights
ANAPriceFrom $650Free CancellationRating
8.3
1,211 reviews
Search ANA flights
Air CanadaPriceFrom $669Free CancellationRating
7.1
11,062 reviews
Search Air Canada flights
Japan AirlinesPriceFrom $697Free CancellationRating
8.3
1,825 reviews
Search Japan Airlines 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 Seattle to Osaka?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Seattle to Osaka. momondo saves you time and could save you money on your trip.

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

Yes. momondo allows you to filter the results for Seattle to Osaka flights to just show those with flexible booking policies.

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

momondo helps you find the best flight between Seattle 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 Seattle to Osaka right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Seattle to Osaka now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Osaka and let you know when they change.

An easier way to manage your Osaka trip

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mié. 6/17
mié. 6/24
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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