International route
Cheap flights from Seattle to Osaka
Seattle-Tacoma International Airport (SEA) to Kansai International Airport (KIX). 5,027 miles, 10h 30m nonstop.
SEA to KIX 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
- 10h 30mnonstop, 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
- Tuesday19% less than Sunday
- Time difference
- 16h aheadOsaka vs Seattle
Seattle to Osaka
Round trips from $408
Per traveler, taxes and fees included. Lowest fare we found departs Tue, Jan 5.
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 WhatsAppSeattle to Osaka 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 Seattle to Osaka
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 $408; September 2026 is the most expensive at $551 and up, a difference of $143 per traveler.
- Departing on a Tuesday averages 19% less than a Sunday 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.
- Osaka is 16 hours ahead of Seattle. Expect to lose 16 hours on the clock heading east, so an overnight or late-afternoon departure tends to arrive at a more usable hour.
Ready to compare live fares?
See every airline on SEA–KIX side by side with bags and seat rules spelled out.
Search Seattle to OsakaSeattle to Osaka: common questions
How long is the flight from Seattle to Osaka?
A nonstop flight from Seattle (SEA) to Osaka (KIX) takes about 10h 30m 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 SEA to KIX?
Japan Airlines operates nonstop flights from Seattle (SEA) to Osaka (KIX), 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 Seattle to Osaka?
Over the next six months, January 2027 has the lowest round-trip fares from Seattle (SEA) to Osaka (KIX), starting at $408 per traveler including taxes and fees. Within any month, Tuesday departures average the lowest prices.
How far in advance should I book Seattle to Osaka 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 Seattle and Osaka?
Osaka is 16 hours ahead of Seattle. SEA is on America/Los Angeles time and KIX on Asia/Tokyo time. Departure and arrival times in search results are always shown in local time at each airport.
Related routes
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