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Cheap flights from Seattle to Osaka from $322

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 1/27. 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.
ANA Logo
4:30 pm - 7:50 am
SEA
-
UKB
23h 20m
1 stop
ANA Logo
7:05 am - 2:25 pm
UKB
-
SEA
23h 20m
1 stop
$588ANA
sáb., abr. 18 - lun., may. 11
ANA Logo
6:03 am - 4:40 pm
SEA
-
KIX
17h 37m
1 stop
ANA Logo
2:05 pm - 1:20 pm
KIX
-
SEA
16h 15m
1 stop
$590ANA
sáb., feb. 7 - sáb., feb. 14
ANA Logo
4:30 pm - 9:50 pm
SEA
-
KIX
13h 20m
1 stop
ANA Logo
5:30 pm - 2:25 pm
KIX
-
SEA
12h 55m
1 stop
$591ANA
sáb., abr. 18 - lun., may. 11
ANA Logo
4:30 pm - 9:45 pm
SEA
-
UKB
13h 15m
1 stop
ANA Logo
7:05 am - 9:06 pm
UKB
-
SEA
30h 01m
2 stops
$593ANA
sáb., abr. 18 - lun., may. 11
United Airlines Logo
5:00 am - 2:50 pm
SEA
-
KIX
17h 50m
1 stop
United Airlines Logo
8:30 am - 2:25 pm
KIX
-
SEA
21h 55m
1 stop
$596United Airlines
jue., abr. 30 - lun., may. 11
United Airlines Logo
7:08 am - 2:50 pm
SEA
-
KIX
15h 42m
1 stop
United Airlines Logo
4:55 pm - 11:29 pm
KIX
-
SEA
22h 34m
1 stop
$604United Airlines
jue., abr. 30 - sáb., may. 9
United Airlines Logo
6:03 am - 4:40 pm
SEA
-
KIX
17h 37m
1 stop
United Airlines Logo
6:35 pm - 11:30 pm
KIX
-
SEA
21h 55m
1 stop
$605United Airlines
sáb., feb. 7 - lun., feb. 16
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
$633Japan Airlines
mié., feb. 18 - mié., feb. 25
Japan Airlines Logo
8:15 am - 8:05 pm
SEA
-
ITM
18h 50m
2 stops
Japan Airlines Logo
2:40 pm - 9:55 am
ITM
-
SEA
12h 15m
1 stop
$637Japan Airlines
mié., feb. 18 - mié., feb. 25
Japan Airlines Logo
8:10 am - 7:50 pm
SEA
-
ITM
19h 40m
2 stops
Japan Airlines Logo
1:30 pm - 4:17 pm
ITM
-
SEA
18h 47m
2 stops
$639Japan Airlines
mié., abr. 15 - mié., abr. 22

Korean Air flights from Seattle to Osaka

Our best Korean Air deals on Seattle to Osaka flight tickets
Korean Air
Mar 8
SEA7:25 amSeattle/Tacoma Intl
21h 20m
2 stops
KIX8:45 pmOsaka Kansai Intl
Mar 16
KIX11:55 amOsaka Kansai Intl
27h 28m
2 stops
SEA11:23 pmSeattle/Tacoma Intl
$661
Korean Air
Apr 13
SEA12:50 pmSeattle/Tacoma Intl
30h 05m
1 stop
UKB10:55 amKobe
Apr 27
UKB6:55 pmKobe
31h 45m
1 stop
SEA10:40 amSeattle/Tacoma Intl
$664
Korean Air
Apr 12
SEA12:50 pmSeattle/Tacoma Intl
36h 15m
1 stop
KIX5:05 pmOsaka Kansai Intl
Apr 22
KIX6:20 pmOsaka Kansai Intl
32h 20m
1 stop
SEA10:40 amSeattle/Tacoma Intl
$666

ANA flights from Seattle to Osaka

Our best ANA deals on Seattle to Osaka flight tickets
ANA
Apr 18
SEA4:30 pmSeattle/Tacoma Intl
23h 20m
1 stop
UKB7:50 amKobe
May 11
UKB7:05 amKobe
23h 20m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$588
ANA
Feb 7
SEA6:03 amSeattle/Tacoma Intl
17h 37m
1 stop
KIX4:40 pmOsaka Kansai Intl
Feb 14
KIX2:05 pmOsaka Kansai Intl
16h 15m
1 stop
SEA1:20 pmSeattle/Tacoma Intl
$590
ANA
Apr 18
SEA4:30 pmSeattle/Tacoma Intl
13h 20m
1 stop
KIX9:50 pmOsaka Kansai Intl
May 11
KIX2:15 pmOsaka Kansai Intl
16h 10m
1 stop
SEA2:25 pmSeattle/Tacoma Intl
$592

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 enero 21, 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

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

sáb. 4/18

4:30 pm-7:50 am

1 stop23h 20m

Kobe

lun. 5/11

7:05 am-2:25 pm

1 stop23h 20m

$588

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

sáb. 2/7

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

sáb. 2/14

2:05 pm-1:20 pm

1 stop16h 15m

$590

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

sáb. 4/18

4:30 pm-9:50 pm

1 stop13h 20m

Osaka Kansai Intl

lun. 5/11

5:30 pm-2:25 pm

1 stop12h 55m

$591

SeattleKobe

SEA - UKB

SEAUKB

Seattle/Tacoma Intl

sáb. 4/18

4:30 pm-9:45 pm

1 stop13h 15m

Kobe

lun. 5/11

7:05 am-9:06 pm

2 stops30h 01m

$593

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

jue. 4/30

5:00 am-2:50 pm

1 stop17h 50m

Osaka Kansai Intl

lun. 5/11

8:30 am-2:25 pm

1 stop21h 55m

$596

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

jue. 4/30

7:08 am-2:50 pm

1 stop15h 42m

Osaka Kansai Intl

sáb. 5/9

4:55 pm-11:29 pm

1 stop22h 34m

$604

SeattleOsaka

SEA - KIX

SEAKIX

Seattle/Tacoma Intl

sáb. 2/7

6:03 am-4:40 pm

1 stop17h 37m

Osaka Kansai Intl

lun. 2/16

6:35 pm-11:30 pm

1 stop21h 55m

$605

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

mié. 2/18

12:30 pm-7:55 pm

1 stop14h 25m

Osaka Itami

mié. 2/25

2:40 pm-9:55 am

1 stop12h 15m

$633

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

mié. 2/18

8:15 am-8:05 pm

2 stops18h 50m

Osaka Itami

mié. 2/25

2:40 pm-9:55 am

1 stop12h 15m

$637

SeattleOsaka

SEA - ITM

SEAITM

Seattle/Tacoma Intl

mié. 4/15

8:10 am-7:50 pm

2 stops19h 40m

Osaka Itami

mié. 4/22

1:30 pm-4:17 pm

2 stops18h 47m

$639

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 cheapest month to fly to Osaka?

In general, January 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 $677. If you are unable to visit Osaka during the month of January, then departing from Seattle 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 Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Osaka for around $867 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 $697 on momondo.

Can stopping save me money on Seattle to Osaka flights?

You could potentially save up to 57% 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 January 2026, prices for Seattle to Osaka flights are approximately 40% 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

  • 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
8.0
11,775 reviews
Search Alaska Airlines flights
Asiana AirlinesPriceFrom $595Free CancellationRating
8.1
501 reviews
Search Asiana Airlines flights
United AirlinesPriceFrom $647Free CancellationRating
7.4
9,191 reviews
Search United Airlines flights
ANAPriceFrom $650Free CancellationRating
8.4
1,076 reviews
Search ANA flights
Korean AirPriceFrom $660Free CancellationRating
8.4
1,187 reviews
Search Korean Air flights
Air CanadaPriceFrom $669Free CancellationRating
7.1
10,646 reviews
Search Air Canada flights
Japan AirlinesPriceFrom $697Free CancellationRating
8.3
1,688 reviews
Search Japan Airlines flights
STARLUX AirlinesPriceFrom $934Free CancellationRating
8.9
268 reviews
Search STARLUX Airlines flights
EVA AirPriceFrom $975Free CancellationRating
8.4
1,327 reviews
Search EVA Air flights
China AirlinesPriceFrom $1,056Free CancellationRating
8.3
799 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
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
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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