International route
Cheap flights from Osaka to Seattle
Kansai International Airport (KIX) to Seattle-Tacoma International Airport (SEA). 5,027 miles, 9h 40m nonstop.
KIX to SEA at a glance
Computed from airline schedules and the fares we track for this route. Refreshed several times a day.
- Distance
- 5,027 milesgreat-circle
- Typical flight time
- 9h 40mnonstop, gate to gate
- Nonstop airlines
- JL1 airlineJapan
- Nonstop flights per day
- 1all airlines combined
- Cheapest month
- January 2027over the next six months
- Best day to fly
- Tuesday17% less than Friday
- Time difference
- 16h behindSeattle vs Osaka
Osaka to Seattle
Round trips from $411
Per traveler, taxes and fees included. Lowest fare we found departs Tue, Jan 12.
Cheapest month: January 2027
See fares on these datesLock any fare free — pay only when you accept your last-minute deal
Or ask an agent on WhatsAppOsaka to Seattle fares by month
Lowest round-trip economy fare per traveler in each of the next six months, taxes and fees included. Select a month to search that date.
Airlines flying Osaka to Seattle
1 airline flies nonstop with 1 departures a day combined, plus 5 more with one stop.
- JLJapan AirlinesoneworldNonstop · 1 flight a day · first checked bag included
- NHANA All Nippon AirwaysStar AllianceConnecting via HND, NRT · first checked bag included
- OZAsiana AirlinesStar AllianceConnecting via ICN · first checked bag included
- CXCathay PacificoneworldConnecting via HKG · first checked bag included
- CIChina AirlinesSkyTeamConnecting via TPE · first checked bag included
- BREVA AirStar AllianceConnecting via TPE · first checked bag included
Connecting options
Hubs where one airline can carry you on both legs, most choices first.
- Taipei (TPE)BRCI2 airlines
- Tokyo (HND)NH1 airline
- Tokyo (NRT)NH1 airline
- Seoul (ICN)OZ1 airline
- Hong Kong (HKG)CX1 airline
Tips for this route
- Only Japan flies this route nonstop, which keeps nonstop fares firm. A one-stop itinerary through TPE or HND is usually cheaper if you can spare the extra three to five hours.
- January 2027 is the cheapest month to fly over the next six months, with round trips from $411; September 2026 is the most expensive at $536 and up, a difference of $125 per traveler.
- Departing on a Tuesday averages 17% less than a Friday on this route. If your dates are flexible, shift the outbound by a day or two and check the calendar view before you book.
- Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel.
- Seattle is 16 hours behind Osaka. A morning departure lands in Seattle with most of the day left; an evening flight arrives close to local dinner time.
Destination guide
Seattle: Coffee, mountains and Puget Sound
Seattle is the Pacific Northwest's gateway: Pike Place Market, the Space Needle and ferries across Puget Sound, with Mount Rainier and the Olympic Peninsula a couple of hours away. Sea-Tac is a Delta and Alaska hub with light rail downtown.
Best time to visit: July–September is dry, sunny and gorgeous — and the most expensive. May–June and late September are good compromises. October–April is gray and drizzly but cheap.
Flying the other way? Seattle to OsakaFares, airlines and tips for SEA to KIX.Ready to compare live fares?
See every airline on KIX–SEA side by side with bags and seat rules spelled out.
Search Osaka to SeattleOsaka to Seattle: common questions
How long is the flight from Osaka to Seattle?
A nonstop flight from Osaka (KIX) to Seattle (SEA) takes about 9h 40m gate to gate, covering 5,027 miles. Connecting itineraries add the layover, typically 2 to 5 hours more in total.
Which airlines fly nonstop from KIX to SEA?
Japan Airlines operates nonstop flights from Osaka (KIX) to Seattle (SEA), with 1 nonstop departure a day between them. One-stop options connect through TPE, HND and NRT.
What is the cheapest month to fly from Osaka to Seattle?
Over the next six months, January 2027 has the lowest round-trip fares from Osaka (KIX) to Seattle (SEA), starting at $411 per traveler including taxes and fees. Within any month, Tuesday departures average the lowest prices.
How far in advance should I book Osaka to Seattle flights?
Book 2 to 5 months ahead for the best fares; long-haul seats sell out earliest for summer and holiday travel. Air1 Tickets includes free cancellation within 24 hours of booking on every fare, so you can lock in a good price and keep looking.
What is the time difference between Osaka and Seattle?
Seattle is 16 hours behind Osaka. KIX is on Asia/Tokyo time and SEA on America/Los Angeles time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
Other popular city pairs from the same departure city and to the same destination, with the lowest round-trip fares we found.