Airline	Best For	Direct Routes	Highlights
British Airways	Premium service and multiple classes	SFO–LHR	Club Suite business class, excellent lounge access
Virgin Atlantic	Customer service and stylish cabins	SFO–LHR	Upper Class suites, free in-flight Wi-Fi on select flights
United Airlines	Frequent fliers and business travelers	SFO–LHR	Polaris business class, large route network
American Airlines	Loyalty perks via Oneworld	SFO–LHR	Competitive business and premium economy fares
Lufthansa	Connecting options to Europe	SFO–LHR via Frankfurt	Smooth European connections, modern fleet
Singapore Airlines	Luxury experience	SFO–LHR (fifth-freedom route)	Best-in-class economy and business service

🛫 Best Airlines to Fly Nonstop from SFO to London

1. British Airways

As the UK’s flagship carrier, British Airways offers up to two nonstop flights daily from San Francisco to London Heathrow. Their modernized fleet includes the new Club Suite in business class, private First Class cabins, and upgraded premium economy offerings.

Why Fly British Airways:

• New Club Suite with privacy doors

• Access to the luxurious British Airways Lounge at SFO

• Great loyalty perks with the Executive Club and Oneworld Alliance

2. Virgin Atlantic

For travelers who want a little glamour with their transatlantic crossing, Virgin Atlantic is a top choice. Flying nonstop from SFO to Heathrow, Virgin is known for its polished service, onboard bar (Upper Class), and stylish new aircraft.

Why Fly Virgin Atlantic:

• Upper Class seats that convert into fully flat beds

• Stylish, modern cabins even in Premium Economy

• Excellent SkyTeam partnership benefits

3. United Airlines

United’s nonstop flights from SFO to London Heathrow cater especially to business travelers, thanks to the hub at San Francisco International. Their Polaris Business Class offers direct aisle access, Saks Fifth Avenue bedding, and elevated dining options.

Why Fly United:

• Polaris Lounges at key hubs

• Strong MileagePlus rewards program

• Numerous daily departures and seamless upgrades for elite members

4. American Airlines

American Airlines provides strong competition on the SFO–London route, leveraging its Oneworld Alliance membership. Passengers can expect upgraded Flagship Business cabins, comfortable Premium Economy seats, and the opportunity to earn or redeem miles easily.

Why Fly American Airlines:

• Consistently competitive fares

• Flagship lounges at connecting airports

• Great flexibility with AAdvantage miles

5. Singapore Airlines

One of the best-kept secrets: Singapore Airlines operates a “fifth freedom” flight between SFO and London Heathrow (before continuing to Singapore). Renowned for its impeccable service, Singapore offers one of the most luxurious economy and business class experiences on this route.

Why Fly Singapore Airlines:

• Top-rated service across all cabins

• Spacious economy seats and legendary customer service

• Unique chance to sample Singapore Airlines excellence without leaving Europe

🌟 Airlines Offering One-Stop Service to London from SFO

If you’re open to one connection, these airlines also offer excellent service:

• Lufthansa (via Frankfurt): Fast European connections

• KLM (via Amsterdam): Excellent Premium Economy upgrades

• Air France (via Paris): Smooth connections across Europe

While not nonstop, these options can sometimes offer cheaper fares or better timings depending on your travel schedule.

🧳 Tips for Booking Flights from San Francisco to London

• Book early: For peak travel seasons (summer and holidays), book at least 4–6 months in advance.

• Look for fifth-freedom flights: Singapore Airlines often has high-end service at competitive pricing.

• Join frequent flyer programs: Miles with Oneworld (British Airways, American) or Star Alliance (United, Lufthansa) can add up fast.

• Fly midweek: Tuesdays and Wednesdays typically offer the lowest fares.

• Check business class sales: Virgin Atlantic and British Airways regularly offer Upper Class and Club World deals in January and September.

✈️ FAQ: Flying from San Francisco to London

What airlines fly nonstop from SFO to London?
British Airways, Virgin Atlantic, United Airlines, American Airlines, and Singapore Airlines all offer nonstop flights.

How long is the flight from San Francisco to London?
Most nonstop flights average around 10 hours to 10 hours and 30 minutes.

Which London airport do flights from SFO land at?
Most nonstop flights from SFO land at London Heathrow (LHR), the main international hub.

When is the cheapest time to fly from San Francisco to London?
Typically, January–March and October–November offer lower fares outside of peak tourism seasons.

Final Thoughts: Best Airlines to Fly from SFO to London

With more options than ever, 2025 is the perfect year to plan your San Francisco to London trip. Whether you’re chasing luxury, loyalty perks, or unbeatable service, there’s an airline that fits your style. Fly smart, book early, and get ready to cross the Atlantic in comfort and style.

Cheers to your London adventure!