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Cheap flights from San Francisco Bay Area to London Heathrow Airport

SFO — LHR
16 Jun — 23 Jun1
1 adult
1 adult, Economy, 0 bags

Find flight deals from San Francisco Bay Area to Heathrow

Keep the following information in mind while searching for San Francisco Bay Area to Heathrow flight deals. Data was last updated 17 May 2026.

Round-trip from

£582

One-way from

£306

Popular in

June

Cheapest in

January

Average price

£697
Virgin Atlantic
  • Virgin Atlantic
  • 19/10-28/10
  • 2 total stops
  • 33h 38m total
  • San Francisco Bay Area to London
Search Deals
15/10
  • 15/10
  • 3 total stops
  • 41h 35m total
  • San Francisco Bay Area to London
Search Deals
Highest demand for flights based on searches. 21% potential increase in price (£117 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£19 potential savings vs. average return price).
Search Deals
Average for round-trip flights in May 2026
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Cheapflights Insights

Everything you need to know about your flight from San Francisco Bay Area to London Heathrow Airport

How far ahead should I book a flight from San Francisco Bay Area to London Heathrow Airport?

The best time to book flights from San Francisco Bay Area to London Heathrow Airport is 77 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from San Francisco Bay Area to London Heathrow Airport?

Currently, January is the cheapest month in which you can book a flight from San Francisco Bay Area to London Heathrow Airport (average of £336). Flying from San Francisco Bay Area to London Heathrow Airport in February is currently the most expensive (average of £1,156). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from XIH to LHR?

Find hourly flight availability from San Francisco Bay Area to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 May 2026.

One of the essential ways to save on airfare from San Francisco Bay Area to London Heathrow Airport is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the evening could potentially save you up to 28% on airfare.

What is the cheapest day to fly from San Francisco Bay Area to London Heathrow Airport?

Use this chart to determine the cheapest time to fly return from San Francisco Bay Area to Heathrow. Price data was last updated on 16 May 2026.

Travellers seeking maximum savings on their San Francisco Bay Area to London Heathrow Airport flight should consider departing on Tuesday at midday when fares are most often at their lowest. Friday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 17 May 2026.
Check out reviews from past customers who have flown with KLM,United Airlines, andVirgin Atlantic from San Francisco Bay Area to London Heathrow Airport to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,517 reviews
Check prices

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.8

Crew

8.4

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,517 reviews
KLM
7.8
Good
1,517 reviews
Check prices

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.8

Crew

8.4

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
United Airlines
7.4
Good
9,736 reviews
KLM
7.8
Good
1,517 reviews
Check prices

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.8

Crew

8.4

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Virgin Atlantic
7.4
Good
688 reviews
KLM
7.8
Good
1,517 reviews
Check prices

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.8

Crew

8.4

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Lufthansa
6.8
Okay
8,009 reviews
KLM
7.8
Good
1,517 reviews
Check prices

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.8

Crew

8.4

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
British Airways
6.7
Okay
7,985 reviews
KLM
7.8
Good
1,517 reviews
Check prices

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.8

Crew

8.4

Overall

7.8

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

Related info for your journey

Find useful and relevant information for your journey from San Francisco Bay Area to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from San Francisco Bay Area to London Heathrow Airport?

    There are many flights that can get you from San Francisco Bay Area to London Heathrow Airport in 10h 20m. Fly via Virgin Atlantic, United Airlines, or KLM to get the fastest option. Airlines will cover a distance of 5350 mi. Both multi-stop and direct flights can be found to your destination and back.

  • What are the cheapest airlines to fly from San Francisco Bay Area to London Heathrow Airport one-way?

    £247 is the cheapest one-way deal found within the past few days, from United Airlines. You may also be able to find cheap deals on Virgin Atlantic and KLM, with prices starting from £260 and £267, respectively.

  • What are the most popular routes from San Francisco Bay Area to London Heathrow Airport?

    Most travelers choose San Francisco - London Heathrow, Oakland - London Heathrow or San Jose - London Heathrow when deciding on the best route from San Francisco Bay Area to London Heathrow Airport.

  • What are the most reliable airlines from San Francisco Bay Area to London Heathrow Airport?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from San Francisco Bay Area to London Heathrow Airport on time: Air Canada (85%), Austrian Airlines (85%), United Airlines (85%).

  • What are the cheapest flights from San Francisco Bay Area to London Heathrow Airport?

    Looking for the cheapest flight from San Francisco Bay Area to London Heathrow Airport? While on average our users pay £1,544, our data indicates the cheapest price to be £239. The most popular route (San Francisco - London Heathrow), is priced around £482.

  • Can I find deals for flights from San Francisco Bay Area to Heathrow that include hotel bookings?

    Yes. In addition to deals on San Francisco Bay Area to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from San Francisco Bay Area to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Francisco Bay Area to Heathrow.

  • Can I find deals for business class flights from San Francisco Bay Area to Heathrow?

    Yes. Cheapflights offers flight deals from San Francisco Bay Area to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Francisco Bay Area to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from San Francisco Bay Area to London Heathrow Airport (average of £336). Flying from San Francisco Bay Area to London Heathrow Airport in February is currently the most expensive (average of £1,156). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near London Heathrow Airport?

Book flights to London Heathrow Airport if you plan to visit one of these locations
Milton Keynes
Hounslow
Croydon
Wembley
Northampton
Luton
Gatwick
Slough
Ilford
Hayes
Brentford
Colchester
Romford
Watford
Kingston upon Thames
Eastbourne
Swindon
Ipswich
Southend-on-Sea
Guildford

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 5 airlines flying from San Francisco Bay Area to Heathrow

Discover the top 5 airlines that operate flights from San Francisco Bay Area to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 17 May 2026.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£371Average£544FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
KLMCheapest£373Average£694FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£374Average£674FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights
British AirwaysCheapest£389Average£514FlexibilityNo cancel feeOn-time70%
Search British Airways flights
United AirlinesCheapest£398Average£586FlexibilityNo cancel feeOn-time69%
Search United Airlines flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from San Francisco Bay Area to Heathrow?

Deals for San Francisco Bay Area to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from San Francisco Bay Area to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from San Francisco Bay Area by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from San Francisco Bay Area to Heathrow with no change fees?

Users can book flights with no change fees policies with our dedicated filters. Book flights from San Francisco Bay Area to Heathrow flexibly with Cheapflights today.

Can Cheapflights notify me if prices for flights from San Francisco Bay Area to Heathrow become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Heathrow from San Francisco Bay Area today and book when prices fit your budget.

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