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SDJ to SEA: distance & flight time
Sendai (Sendai Airport) → Seattle (Seattle Tacoma International Airport)
4,623 mi
7,440 km · 4,017 nm
9h 32m
estimated nonstop flight time
-16h
time difference · heading northeast
See live SDJ→SEA fares Phone-only fares on this route — call free
Flight time details
4,623 miles nonstop takes roughly 9h 32m 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
- SDJ — Sendai Airport · Sendai, 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 SDJ
- GAJ · Yamagata Airport35 mi away
- FKS · Fukushima Airport68 mi away
- SYO · Shonai Airport77 mi away
- HNA · Hanamaki Airport90 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 SDJ from SEA?
The flight distance from Sendai (SDJ) to Seattle (SEA) is 4,623 miles (7,440 km, 4,017 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SDJ to SEA?
A nonstop flight takes about 9h 32m 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 Sendai and Seattle?
Seattle is 16 hours behind Sendai.
What is the cheapest way to fly from SDJ to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SDJ–SEA that never appear on search engines, with no booking fees.