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BFI to RML: distance & flight time
Seattle (Boeing Field King County International Airport) → Colombo (Colombo Ratmalana Airport)
8,445 mi
13,590 km · 7,338 nm
17h 1m
estimated nonstop flight time
+12.5h
time difference · heading northwest
See live BFI→RML fares Phone-only fares on this route — call free
Flight time details
8,445 miles nonstop takes roughly 17h 1m 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
- BFI — Boeing Field King County International Airport · Seattle, United States
- RML — Colombo Ratmalana 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 BFI
- SEA · Seattle Tacoma International Airport6 mi away
- RNT · Renton Municipal Airport5 mi away
- PWT · Bremerton National Airport22 mi away
- TIW · Tacoma Narrows Airport22 mi away
Near RML
- CMB · Bandaranaike International Colombo Airport25 mi away
- KCT · Koggala Airport65 mi away
- HRI · Mattala Rajapaksa International Airport93 mi away
- GIU · Sigiriya Air Force Base97 mi away
Frequently asked questions
How far is BFI from RML?
The flight distance from Seattle (BFI) to Colombo (RML) is 8,445 miles (13,590 km, 7,338 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from BFI to RML?
A nonstop flight takes about 17h 1m 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 BFI to RML?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on BFI–RML that never appear on search engines, with no booking fees.