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KCT to SEA: distance & flight time
Koggala (Koggala Airport) → Seattle (Seattle Tacoma International Airport)
8,495 mi
13,671 km · 7,382 nm
17h 7m
estimated nonstop flight time
-12.5h
time difference · heading north
See live KCT→SEA fares Phone-only fares on this route — call free
Flight time details
8,495 miles nonstop takes roughly 17h 7m gate to gate, flying north. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12.5-hour time set-back when reading arrival times on your ticket.
The two airports
- KCT — Koggala Airport · Koggala, Sri Lanka
- 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 KCT
- HRI · Mattala Rajapaksa International Airport59 mi away
- RML · Colombo Ratmalana Airport65 mi away
- WRZ · Weerawila Airport65 mi away
- CMB · Bandaranaike International Colombo Airport87 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 KCT from SEA?
The flight distance from Koggala (KCT) to Seattle (SEA) is 8,495 miles (13,671 km, 7,382 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from KCT to SEA?
A nonstop flight takes about 17h 7m 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 Koggala and Seattle?
Seattle is 12.5 hours behind Koggala.
What is the cheapest way to fly from KCT to SEA?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on KCT–SEA that never appear on search engines, with no booking fees.