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SEA to CMB: distance & flight time
Seattle (Seattle Tacoma International Airport) → Colombo (Bandaranaike International Colombo Airport)
8,426 mi
13,560 km · 7,322 nm
16h 59m
estimated nonstop flight time
+12.5h
time difference · heading northwest
See live SEA→CMB fares Phone-only fares on this route — call free
Flight time details
8,426 miles nonstop takes roughly 16h 59m 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
- CMB — Bandaranaike International Colombo Airport · Colombo, 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 CMB
- RML · Colombo Ratmalana Airport25 mi away
- GIU · Sigiriya Air Force Base79 mi away
- ACJ · Anuradhapura Air Force Base86 mi away
- KCT · Koggala Airport87 mi away
Frequently asked questions
How far is SEA from CMB?
The flight distance from Seattle (SEA) to Colombo (CMB) is 8,426 miles (13,560 km, 7,322 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from SEA to CMB?
A nonstop flight takes about 16h 59m 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 Colombo?
Colombo is 12.5 hours ahead of Seattle.
What is the cheapest way to fly from SEA to CMB?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on SEA–CMB that never appear on search engines, with no booking fees.