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SEA to ADP: distance & flight time
Seattle (Seattle Tacoma International Airport) → Galoya (Ampara Airport)
8,378 mi
13,484 km · 7,281 nm
16h 54m
estimated nonstop flight time
+12.5h
time difference · heading northwest
See live SEA→ADP fares Phone-only fares on this route — call free
Flight time details
8,378 miles nonstop takes roughly 16h 54m gate to gate, flying northwest. Add 45–90 minutes per connection if there's no nonstop service. Remember to factor the 12.5-hour time gain when reading arrival times on your ticket.
The two airports
- SEA — Seattle Tacoma International Airport · Seattle, United States
- ADP — Ampara Airport · Galoya, Sri Lanka
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 ADP
- BTC · Batticaloa Airport26 mi away
- HIM · Hingurakgoda Air Force Base66 mi away
- GIU · Sigiriya Air Force Base75 mi away
- WRZ · Weerawila Airport80 mi away
Frequently asked questions
How far is SEA from ADP?
The flight distance from Seattle (SEA) to Galoya (ADP) is 8,378 miles (13,484 km, 7,281 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to ADP?
A nonstop flight takes about 16h 54m 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 Galoya?
Galoya is 12.5 hours ahead of Seattle.
What is the cheapest way to fly from SEA to ADP?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–ADP that never appear on search engines, with no booking fees.