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RML to SFO: distance & flight time
Colombo (Colombo Ratmalana Airport) → San Francisco (San Francisco International Airport)
9,048 mi
14,561 km · 7,862 nm
18h 12m
estimated nonstop flight time
-12.5h
time difference · heading northeast
See live RML→SFO fares Phone-only fares on this route — call free
Flight time details
9,048 miles nonstop takes roughly 18h 12m gate to gate, flying northeast. 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
- RML — Colombo Ratmalana Airport · Colombo, Sri Lanka
- SFO — San Francisco International Airport · San Francisco, 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 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
Near SFO
- SQL · San Carlos Airport10 mi away
- HAF · Half Moon Bay Airport10 mi away
- OAK · Metropolitan Oakland International Airport11 mi away
- NGZ · Alameda Naval Air Station12 mi away
Frequently asked questions
How far is RML from SFO?
The flight distance from Colombo (RML) to San Francisco (SFO) is 9,048 miles (14,561 km, 7,862 nautical miles), measured along the great-circle route airlines actually fly.
How long is the flight from RML to SFO?
A nonstop flight takes about 18h 12m 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 Colombo and San Francisco?
San Francisco is 12.5 hours behind Colombo.
What is the cheapest way to fly from RML to SFO?
Compare live fares online, then call CheapoTrav — our agents have unpublished consolidator fares on RML–SFO that never appear on search engines, with no booking fees.