London San Francisco
British Airways puts an A380 on London Heathrow to San Francisco. It is one of the few routes where BA still flies the double-decker, and between BA, United, and Virgin Atlantic you have nonstop departures throughout the day from Heathrow.
Book United or Virgin Atlantic for economy. Both fly 787 Dreamliners with multiple daily frequencies, and they undercut each other on price often enough that it pays to check both. United is the pick if you are connecting anywhere in the US. SFO is a United hub and you clear customs there regardless. Virgin Atlantic runs a roomier economy cabin on their 787.
British Airways is the weaker economy choice. The A380 has tighter seat pitch than either competitor's 787, and BA fares on this route are rarely cheaper. The 787 operators win in the back.
For business class on an eleven-hour flight, Virgin Atlantic Upper Class is where you want to sit. BA Club World on the A380 upper deck is a solid second. United Polaris is fine but does not match what the other two offer up front.
Once you land at SFO, BART runs from inside the international terminal to downtown in about 30 minutes. If you are headed to the East Bay (Berkeley, Oakland, Emeryville), the Bay Bridge sits between SFO and where you need to be. During commute hours that crossing can add an hour. No airline flies nonstop from London to Oakland, so plan around which side of the bay you are staying. For South Bay tech campuses like Apple and Google, SJC is closer but has no London nonstop. From SFO, a car or Caltrain south takes 30 to 45 minutes depending on traffic.
Have a specific need? Use the decision guide below to filter by your airline, where you live, lounges, or where you're staying in San Francisco.
Pick What Matters to You
Best pair by where you're coming from
Best pair by where you're staying in San Francisco
Which pair your airline flies nonstop
| Airline | LHR–SFO |
|---|---|
| British Airways | ✓ |
| Emirates | ✓ |
| TWY | — |
| United Airlines | ✓ |
| Virgin Atlantic | ✓ |
Ranked by on-time performance
Lounge access by airport and terminal
Ranked by flights per week
Getting to the airport
Red-eye vs daytime departures
Premium cabin options
Connecting through London from a domestic flight
For San Francisco itself, connections add time you do not need. Three carriers run enough nonstops from Heathrow that there is always a convenient departure. The one case where connecting works: reaching Oakland or San Jose on a single ticket by routing through a US hub. The layover adds several hours but saves a separate domestic booking and the ground transfer across the Bay. Worth pricing if your trip ends in the East Bay or Silicon Valley.
London & San Francisco Airport Profiles
Each airport has a personality. Terminal quality, transit access, lounge scene, and crowd levels vary dramatically — sometimes more than the flight itself.
London Metro
Heathrow has four active terminals and your airline determines which one you use. Terminal 5 is British Airways territory, the newest and most polished. Terminal 2, the Queen's Terminal, handles Star Alliance carriers. Terminal 3 has Virgin Atlantic and several US carriers. Terminal 4 is smaller and serves a mix of international airlines.
The terminals are not walkable between each other. Free inter-terminal transfers run on the Elizabeth Line or Heathrow Express between T2/T3 (which share a central area) and T5. T4 requires a separate bus. Build in 60 minutes if you need to change terminals for a connection.
Immigration at 6 to 8 AM is slow. The morning wave of transatlantic red-eyes all land in the same window, and queues back up. E-gates work for US passport holders, which helps, but the volume is real. The airport is well-signed and functional, not beautiful. Shopping is extensive if you clear customs early.
Luton is a single-terminal airport 35 miles north of central London that has been undergoing expansion. The DART people-mover opened in 2023, replacing the old shuttle bus from the Luton Airport Parkway rail station. That shuttle bus was always the weakest link in getting to central London from Luton, and the DART fixes it.
The terminal is compact and functional. It serves mostly budget carriers on European routes. Any transatlantic service from New York is rare and seasonal. The airport handles fewer passengers than Heathrow, Gatwick, or Stansted, and it shows in the smaller food and retail options.
Luton works well for travelers headed to the north side of London, Bedfordshire, or the Midlands. For everyone else, the distance to central London and the limited flight options make it primarily a budget carrier airport.
No high-frequency connections found. Check STN routes for all options.
San Francisco Metro
Four terminals connected by an automated AirTrain that loops the complex. The International Terminal anchors the west end with high ceilings and natural light. Three domestic terminals line the east side. The walk between the farthest domestic gate and the International Terminal takes about 15 minutes on the AirTrain, so leave time for connections across the complex.
BART sits one level below the International Terminal departures hall, making transit access straightforward on the international side and a short AirTrain ride from the domestic gates. Security lines can run long during afternoon departure banks when transpacific flights cluster together.
The airport sits on the bay, and marine layer fog is a regular summer feature. Morning departures in June through August can push 30 to 60 minutes. Afternoon flights are typically clear. If on-time departure matters, book the afternoon.
Two terminals, both compact enough to walk end-to-end in under five minutes. The airport sits in the middle of Silicon Valley, closer to most South Bay offices than any other Bay Area airport. Security is usually quick, and the drop-off curb is steps from the check-in counters.
The terminal buildings are low-rise and functional. Limited food and shopping compared to larger airports, but the short distances and fast processing make up for it. VTA light rail connects to the north side of the airport for local transit.
No high-frequency connections found. Check SJC routes for all options.
Compact and straightforward. One main terminal building with two concourse areas. Security lines move quickly, and the walk from the curb to any gate rarely exceeds 10 minutes. The airport handles less traffic than its neighbors, which keeps the experience low-stress for departures and arrivals alike.
The BART connection runs via an elevated people mover from the Coliseum station to the terminal, adding about 8 minutes to the rail journey. Inside, the terminal is older and simpler but functional. Food and shopping options are limited compared to larger airports in the region.
No high-frequency connections found. Check OAK routes for all options.
Full Comparison
Every airport combination ranked by schedule depth. LHR–SFO carries 99% of weekly flights with the best on-time record. The remaining 2 pairs share 1% between them.
Which Airlines Fly Which Pairs
Not all planes are the same size. The aircraft type below each checkmark tells you whether you are getting a widebody (777, 787, A350) with wider seats and a quieter ride, or a narrowbody (737, A321) with a single aisle. On flights over five hours, the difference is significant.
A380, 777-300ER
787-9
A350, 787-9