Great Circle Distance between Heathrow and San Francisco International Airport is 5,354 miles, with a flight time of approx 11 hrs. San Francisco's IATA airport code is SFO.
Show San Francisco International Airport on map.
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Climate:
San Francisco's climate is characterized by its mild, Mediterranean weather, heavily influenced by the Pacific Ocean. The city experiences cool, wet winters and dry summers, with temperatures that are surprisingly moderate year-round. Summer temperatures usually range from the mid-50s to the mid-60s Fahrenheit (13-18°C), while winters are slightly cooler, averaging from the upper 40s to mid-50s Fahrenheit (8-13°C).
One of San Francisco’s most defining climate features is its famous fog, particularly prevalent in the summer months. This marine layer rolls in from the ocean, often blanketing the city in a cool mist and creating dramatic, photogenic scenes around landmarks like the Golden Gate Bridge. The fog tends to lift by midday, allowing the sun to break through, particularly in the fall months which are often the sunniest and warmest.
Rainfall is concentrated in the winter months, from November to March, with the city receiving an average of about 24 inches (610 mm) annually. Despite the occasional rain, San Francisco's weather remains relatively stable and comfortable, making it a year-round destination for visitors who appreciate its unique blend of coastal and urban environments.
Routing Options
Route 1 | LHR‑SFO (BA)  |
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| TOTAL (SGL) | TOTAL (RTN) |
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Route 2 | LHR‑HKG (BA)  | HKG‑SYD (CX)  | SYD‑AKL (NZ)  | AKL‑SFO (NZ)  | TOTAL (SGL) | TOTAL (RTN) |
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Route 3 | LHR‑SIN (BA)  | SIN‑SYD (BA)  | SYD‑AKL (NZ)  | AKL‑SFO (NZ)  | TOTAL (SGL) | TOTAL (RTN) |
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When booking with BA, tier points can be earned on the following
Oneworld Alliance ® airlines:
Alaska Airlines,
American Airlines,
British Airways,
Cathay Pacific,
Fiji Airways,
Finnair,
Iberia,
Japan Airlines,
Malaysia Airlines,
Qantas,
Qatar Airways,
Royal Air Maroc,
Royal Jordanian,
SriLankan Airlines
Avios Required (per leg) for BA Redemption Flight from London to San Francisco, (Zone 6, 4,001-5,500 miles)
Cabin | Off Peak Travel | Peak Travel |
Economy | 16,250 | 25,000 |
World Traveller Plus | 32,500 | 50,000 |
Club | 62,500 | 75,000 |
First | 85,000 | 100,000 |
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