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SEA to NST: distance & flight time
Seattle (Seattle Tacoma International Airport) → Nakhon Si Thammarat (Nakhon Si Thammarat Airport)
7,786 mi
12,530 km · 6,765 nm
15h 44m
estimated nonstop flight time
+14h
time difference · heading northwest
See live SEA→NST fares Phone-only fares on this route — call free
Flight time details
7,786 miles nonstop takes roughly 15h 44m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 14-hour time gain when reading arrival times on your ticket.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- NST — Nakhon Si Thammarat Airport · Nakhon Si Thammarat, Thailand
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 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
Near NST
- URT · Surat Thani Airport69 mi away
- USM · Samui Airport70 mi away
- KBV · Krabi Airport72 mi away
- TST · Trang Airport75 mi away
Frequently asked questions
How far is SEA from NST?
The flight distance from Seattle (SEA) to Nakhon Si Thammarat (NST) is 7,786 miles (12,530 km, 6,765 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to NST?
A nonstop flight takes about 15h 44m 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 Seattle and Nakhon Si Thammarat?
Nakhon Si Thammarat is 14 hours ahead of Seattle.
What is the cheapest way to fly from SEA to NST?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–NST that never appear on search engines, with no booking fees.