Need help booking?
Unpublished phone-only deals available
KIX to SEA: distance & flight time
Osaka (Kansai International Airport) → Seattle (Seattle Tacoma International Airport)
5,028 mi
8,091 km · 4,369 nm
10h 19m
estimated nonstop flight time
-16h
time difference · heading northeast
See live KIX→SEA fares Phone-only fares on this route — call free
Flight time details
5,028 miles nonstop takes roughly 10h 19m gate to gate, flying northeast. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 16-hour time set-back when reading arrival times on your ticket.
The two airports
- KIX — Kansai International Airport · Osaka, Japan
- SEA — Seattle Tacoma International Airport · Seattle, United States
Distances are great-circle ("as the crow flies") — the same basis airlines use for frequent-flyer miles.
Alternate airports can cut this fare
Flying from or into a nearby airport is the #1 trick our agents use to beat online prices. Call and we'll compare every combination on one call.
Near KIX
- UKB · Kobe Airport14 mi away
- ITM · Osaka International Airport27 mi away
- TKS · Tokushima Airport/JMSDF Air Base42 mi away
- SHM · Nanki Shirahama Airport53 mi away
Near SEA
- RNT · Renton Municipal Airport5 mi away
- BFI · Boeing Field King County International Airport6 mi away
- TIW · Tacoma Narrows Airport18 mi away
- PWT · Bremerton National Airport21 mi away
Frequently asked questions
How far is KIX from SEA?
The flight distance from Osaka (KIX) to Seattle (SEA) is 5,028 miles (8,091 km, 4,369 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KIX to SEA?
A nonstop flight takes about 10h 19m gate to gate. Actual time varies with winds, routing and season — eastbound transatlantic flights, for example, are usually faster than the return.
What is the time difference between Osaka and Seattle?
Seattle is 16 hours behind Osaka.
What is the cheapest way to fly from KIX to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KIX–SEA that never appear on search engines, with no booking fees.