LHR - SFO

Find Cheap Flights from London Heathrow to San Francisco

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London Heathrow to San Francisco flight information

Flights arrive in San Francisco
Flights depart from London Heathrow
Flight price £269
Distance 5,354 miles
Airlines SWISS, Lufthansa

Good to know

Low season:
February
Best time to beat the crowds
7%
expected price decrease
High season:
July
Most popular time to fly
38%
expected price increase
Average price:
£463
(avg. price over the last 2 weeks)
Good deal:
£335
or less (return)

When to Book Flights from London Heathrow to San Francisco

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for finding a cheap flight

Looking for a cheap flight? 25% of our users found flights on this route for £335 or less.
The cheapest flight from London Heathrow to San Francisco was found, on average, 81 days before departure.
Book at least 3 weeks before departure in order to get a below-average price.
High season is considered to be June, July and August. The cheapest month to fly is February.
Morning departure is around 11% more expensive than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking London Heathrow to San Francisco Flights

How long does a flight from London Heathrow to San Francisco take?
The average direct flight takes 14h 20m, covering a distance of 5354 miles.
How many flights are there between London Heathrow and San Francisco?
There are 549 (direct) flights between London Heathrow and San Francisco per week, averaging 77 per day.
Which airlines provide the cheapest flights from London Heathrow to San Francisco?
In the past 3 days, the cheapest return tickets were found on SWISS (£269) and Lufthansa (£284)
Which airlines fly most frequently between London Heathrow and San Francisco?
Air New Zealand (8 times daily), American Airlines (4 times daily), KLM (4 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly from London Heathrow to San Francisco?
For London Heathrow to San Francisco, Saturday is the cheapest day to fly on average and Sunday is the most expensive. Flying from San Francisco back to London Heathrow, the best deals are generally found on Friday, with Monday being the most expensive.
How does KAYAK find such low flight prices?
KAYAK processes over 2 billion travel queries annually and displays results from hundreds of airlines and third party sites, allowing it to find a variety of flight prices and options. It also displays results from 2M+ properties along with car hire, holiday packages, activities and millions of verified reviews so users can see as many available travel options as possible.
How can Hacker Fares save me money?
Hacker Fares allow you to combine one-way tickets on different airlines when it can save you money over a traditional return ticket.
Does KAYAK query more flight providers than competitors?
Yes, KAYAK has access to more data and information than online travel agencies and consistently outperforms the competition in accuracy, globally.
How does KAYAK’s flight Price Forecast tool help me choose the right time to buy?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a given destination and date is likely to change within 7 days, so travellers know whether to wait or book now.

Book cheap flights from London Heathrow to San Francisco (return)

Airports
Origin
London
£269
only
£269
Destination
San Francisco
£269
only
£269
Sat, 25 Jan
LHR
London Heathrow
SFO
San Francisco
28h 15m
Sun, 26 Jan
SFO
San Francisco
LHR
London Heathrow
13h 15m
£269
Trip: 2 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 8,695 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.7
Entertainment
7.8
Food
7.9
ZRH
BOS
Okay 4.6

Cons: Flight delayed due to technical issues, boarding crew said there was a hole in the plane and that it might be canceled. After a long delay we finally tookoff. Plane was very cramped and very little room for the legs. Food and entertainment were average and fine.

ATH
ZRH
Mediocre 2.0

Cons: Rude ground staff at Athens airport, unable to check in online prior to flight, had to wait in line for over an hour for a connecting flight and run to the gate to then be told I was on standby for my next connecting flight. Poor customer service, no headphones given even though all seats have tv screens - such a small thing can make a difference to overall experience eg providing headphones. The check in and boarding forbthis flight was an absolute joke. Two men were about to have a fight due to how irritated everyone was for standing in line for so long. No need whatsoever. Meanwhile 3 staff sat at the ticketing desk and just watched the line grow! When I asked for assistance they brushed me off as if I were a flea! Athens Swiss airlines ground staff are up there with the worst customer service I’ve seen.

ZRH
LUX
Mediocre 2.0

Pros: None

Cons: None hate the experience

ZRH
BOS
Excellent 8.3

Pros: Amazing crew and great comfort

Cons: Entertainment system didn't work. Couldn't hear movie at all with headphones provided and screen very hard to use and just stopped several times. Even after crew reset it twice, still problems.

ZRH
MIA
Excellent 9.0

Pros: The kindness of all people working on Swiss was very special

Cons: The food was not very special, but the chocolates were awesome

Mon, 11 Nov
LHR
London Heathrow
SFO
San Francisco
16h 35m
Thu, 14 Nov
SFO
San Francisco
LHR
London Heathrow
13h 03m
£284
Trip: 4 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 13 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
LHR
SFO
Good 6.6

Pros: We left a little late but arrived early.

Cons: My back was hurting after ten hours plus in my seat - even though I was in Economy Plus. The main course of my Asian Vegetarian Meal was tasty but the accoutrements were borderline dreadful.

FCO
MUC
Excellent 10.0

Pros: We had a “light” fare which didn’t include checked bags, but airline let us check our carryon bags for free

Cons: Nothing

LHR
SFO
Good 7.3

Pros: The whole flight was very comfortable

Cons: all the food relied on bell pepper for flavor. Bell pepper is highly overrated

AMS
FRA
Mediocre 3.0

Cons: Luggage was not received. Now being told it will take up to 5 days! Unacceptable performance

LHR
SFO
Good 6.0

Pros: Ground crew in London was great. Flight was operated by United, hence United service and plane.

Cons: Flight delayed 2.5 hours due to fuel line leak but managed to cut off one of those hours in flight so only delayed 1.5 hours. Older plane so no screens at seats and movies were predetermined. On an 11 hour flight that sucks -- I had seen every single video. Three miserable babies but that is not the airline's fault. I have flown Lufthansa in the past and really thought they were tip top.

Fri, 6 Dec
LHR
London Heathrow
SFO
San Francisco
14h 20m
Wed, 11 Dec
SFO
San Francisco
LHR
London Heathrow
15h 10m
£285
Trip: 6 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 13 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
MUC
LAX
Excellent 10.0

Pros: Free drinks. Two hot meals during flight. Lots of entertainment choices. Extra storage bin under window which doubled as large armrest. Ample legroom. Live sports on TV

FCO
MUC
Excellent 10.0

Pros: We had a “light” fare which didn’t include checked bags, but airline let us check our carryon bags for free

Cons: Nothing

MAN
FRA
Mediocre 2.0

Pros: Nothing

Cons: Cancelling my ticket and put me on another flight Then lost my bag I didn’t receive my bag in final destination

ZRH
FRA
Excellent 9.6

Cons: Seats recline too much making leg room more nonexistent than ever

SFO
MUC
Excellent 8.0

Pros: The crew was amazing.

Cons: There seemed to be no leg room. The seat was very uncomfortable.

Wed, 12 Feb
LHR
London Heathrow
SFO
San Francisco
15h 25m
Sat, 22 Feb
SFO
San Francisco
LHR
London Heathrow
32h 35m
£291
Trip: 11 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 8,695 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.7
Entertainment
7.8
Food
7.9
FRA
ZRH
Good 6.8

Cons: The baggage took a really long time to be delivered to the carousel

JFK
ZRH
Good 7.3

Cons: The seats are small with very little leg room

ZRH
HAJ
Good 7.2

Pros: Seat was comfortable

Cons: Had reasonable size carry on and it was frowned upon? Seat was right behind business class and separation curtain just is my laps

ORD
ZRH
Mediocre 3.6

Pros: The boarding process was easy

Cons: Some of the crew members were rude and inconsiderate - if you see that someone is sleeping, you don’t stand at their seat and lean on it and shake it while you’re waiting to give the security demo before take off.

ZRH
SIN
Excellent 10.0

Pros: Great service in 1st class

Cons: All good

Thu, 26 Dec
LHR
London Heathrow
SFO
San Francisco
26h 45m
Fri, 10 Jan
SFO
San Francisco
LHR
London Heathrow
15h 10m
£288
Trip: 16 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 13 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
BOS
MUC
Okay 5.3

Pros: Nice support people

Cons: Temperature too warm No room Couldn’t get an upgrade

LHR
SFO
Excellent 9.0

Pros: Good plane, good crew, very nice having a row to myself. Loved the pretzel roll sandwich - good flavor, good texture, just the right amount of warmth!

Cons: Was spoiled by the 787 entertainment system on the outbound trip to London - this one was sluggish and dim. The curry chicken meal was not terrible, but not great.

FRA
DEN
Good 6.3

Pros: Food was good

Cons: Late to board, had to wait on arrival for gate while cabin was getting uncomfortably hot

PHL
FRA
Excellent 8.0

Cons: Service desk personnel at the gate were very helpful and attentive. The plane was only 1/2-2/3 full, which made boarding quicker. The food was tasty and coffee was great! We were also offered juice twice during the flight. Bathrooms were clean. Since the plane wasn't full, they weren't dirty even at the end of the flight. I brought my own headphones, but the stewards provided them if you need them. My one big complaint was that our seats did not recline, thus making any kind of shut-eye near impossible. Our plane left and hour late, but the pilots stepped on the gas and we got in on time!

FCO
MUC
Good 6.0

Pros: A340-600 is a wonderful plane, but economy is too cramped. The stewards do their job of feeding the "cattle", which lacks any personal service.

Cons: The terminal updates of terminal and gate notifications were wrong! If we had followed your email and gone to T3, we could have missed our flight and be worn out from changing terminals.

Thu, 24 Oct
LHR
London Heathrow
SFO
San Francisco
15h 20m
Thu, 7 Nov
SFO
San Francisco
LHR
London Heathrow
10h 35m
£311
Trip: 15 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 8,695 reviews
Overall
8.2
Boarding
8.2
Comfort
7.9
Crew
8.7
Entertainment
7.8
Food
7.9
ZRH
LUX
Mediocre 2.0

Pros: None

Cons: None hate the experience

SFO
ZRH
Excellent 8.3

Pros: The crew was amazingly efficient serving food and drink. In the recline position the seat bottom extended which was far more comfortable than simply reclining.

Cons: The food was mediocre and the selection of movies was very limited.

LAX
ZRH
Excellent 10.0

Pros: Liked the time of the flight.

Cons: It left late.

JFK
ZRH
Good 7.3

Cons: The seats are small with very little leg room

NAP
ZRH
Excellent 8.0

Pros: The plane was pretty cool. I like the fact that the overhead compartments had enough room. The staff was friendly, too. The piece of chocolate is very tasty.

Cons: Food on those airplanes is always bad. There were not enough chicken sandwiches and some passengers only were given cheese sandwiches.

Thu, 13 Feb
LHR
London Heathrow
SFO
San Francisco
21h 35m
Tue, 25 Feb
SFO
San Francisco
LHR
London Heathrow
17h 20m
£288
Trip: 13 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 13 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
FRA
ZRH
Okay 5.6

Cons: Boarding from bus and no aero bridge

MUC
IAD
Excellent 9.3

Pros: Entertainment options were great crew was very friendly

Cons: Seat could be more comfortable

FRA
IAD
Good 7.6

Pros: Boarding and service

Cons: Seat is too hard for this long flight. Bigger pillow would help.

ZRH
FRA
Excellent 9.6

Cons: Seats recline too much making leg room more nonexistent than ever

IAD
FRA
Good 6.0

Cons: It’s an international flight. It is what it is!

Fri, 29 Nov
LHR
London Heathrow
SFO
San Francisco
17h 00m
Sun, 15 Dec
SFO
San Francisco
LHR
London Heathrow
15h 10m
£304
Trip: 17 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 13 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
LHR
SFO
Good 6.6

Pros: We left a little late but arrived early.

Cons: My back was hurting after ten hours plus in my seat - even though I was in Economy Plus. The main course of my Asian Vegetarian Meal was tasty but the accoutrements were borderline dreadful.

FRA
MIA
Excellent 10.0

Cons: Excelente fly

LHR
SFO
Okay 4.0

Pros: The price for a direct flight was reasonable

Cons: Wifi wasn't working and movie selection poor. No individual screens especially for a 10 hr flight. Staff were not that friendly either. Old plane and small seats. I would rather pay more for a more comfortable flight.

LHR
SFO
Excellent 9.0

Pros: Good plane, good crew, very nice having a row to myself. Loved the pretzel roll sandwich - good flavor, good texture, just the right amount of warmth!

Cons: Was spoiled by the 787 entertainment system on the outbound trip to London - this one was sluggish and dim. The curry chicken meal was not terrible, but not great.

FRA
IAD
Good 7.6

Pros: Boarding and service

Cons: Seat is too hard for this long flight. Bigger pillow would help.

Sun, 27 Oct
LHR
London Heathrow
SFO
San Francisco
26h 45m
Wed, 13 Nov
SFO
San Francisco
LHR
London Heathrow
18h 45m
£313
Trip: 18 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 13 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
FRA
ZRH
Okay 5.6

Cons: Boarding from bus and no aero bridge

OSL
FRA
Excellent 9.6

Pros: Great food. Nice staff.

Cons: Make a rule that people cannot put their seats back. People in front of us were rude and kept their seats back the entire flight, even after we nicely asked them to not have the seats back so far. Would prefer that seats did not move at all. I would never recline my seat in consideration for the person behind me. On an 11 hour flight, this is a big deal.

FRA
SEA
Excellent 10.0

Cons: Excellent assisted transfer between Austrian Airlines flight and Lufthansa flight to Seattle in Frankfurt. Boarding in Frankfurt could have been handled easier in groups by seating. Friendly stewards, good entertainement and food options. Quiet B 747 plane, spacious overhead stowage.

NBO
FRA
Excellent 9.0

Cons: Wasn't able to online check-in thus losing my window seat 21A I had selected.

MUC
CDG
Good 6.4

Pros: Crew

Cons: We were delayed thirty minutes due to slow service. Zero entertainment and only a brownie for a snack

Sat, 26 Oct
LHR
London Heathrow
SFO
San Francisco
21h 30m
Wed, 30 Oct
SFO
San Francisco
LHR
London Heathrow
33h 15m
£320
Trip: 5 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 13 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
FRA
IAD
Good 7.6

Pros: Very nice airline

Cons: Food was lacking

CLT
MUC
Excellent 9.3

Pros: Clean, quiet and the staff was attentive.

Cons: The meal was average

PHL
FRA
Excellent 8.0

Cons: Service desk personnel at the gate were very helpful and attentive. The plane was only 1/2-2/3 full, which made boarding quicker. The food was tasty and coffee was great! We were also offered juice twice during the flight. Bathrooms were clean. Since the plane wasn't full, they weren't dirty even at the end of the flight. I brought my own headphones, but the stewards provided them if you need them. My one big complaint was that our seats did not recline, thus making any kind of shut-eye near impossible. Our plane left and hour late, but the pilots stepped on the gas and we got in on time!

ZRH
FRA
Excellent 9.6

Cons: Seats recline too much making leg room more nonexistent than ever

DUS
FRA
Mediocre 2.3

Pros: Flight was canceled. No crew... Alternative: Eurowings via Newark. And then United to Detroit. A totally wasted day...

Mon, 6 Apr
LHR
London Heathrow
SFO
San Francisco
30h 35m
Thu, 16 Apr
SFO
San Francisco
LHR
London Heathrow
34h 35m
£336
Trip: 11 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 13 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
LAX
MUC
Good 6.0

Cons: I was charged $60.00 for luggage

PHL
FRA
Excellent 9.6

Cons: There were a couple of flight delays. Other that that, I love Lufthansa.

FRA
CDG
Excellent 9.2

Pros: Comfortable seats, adequate legroom; clean aircraft, polite and professional crew.

Cons: Super crowded gate -- but that's more the CDG problem than Norwegian's one.

FRA
IAD
Good 7.6

Pros: Very nice airline

Cons: Food was lacking

FRA
ORD
Excellent 8.3

Pros: Great food and service.

Cons: My seat did not recline. My movies did not play.

Sun, 12 Apr
LHR
London Heathrow
SFO
San Francisco
15h 05m
Sun, 19 Apr
SFO
San Francisco
LHR
London Heathrow
14h 35m
£349
Trip: 8 days
6.1GoodShow reviews
Overall 6.1 Good
Based on 13 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.5
Entertainment
7.7
Food
7.6
MAN
FRA
Mediocre 2.0

Pros: Nothing

Cons: Cancelling my ticket and put me on another flight Then lost my bag I didn’t receive my bag in final destination

LHR
SFO
Excellent 9.0

Pros: Good plane, good crew, very nice having a row to myself. Loved the pretzel roll sandwich - good flavor, good texture, just the right amount of warmth!

Cons: Was spoiled by the 787 entertainment system on the outbound trip to London - this one was sluggish and dim. The curry chicken meal was not terrible, but not great.

FRA
ZRH
Okay 5.6

Cons: Boarding from bus and no aero bridge

LHR
SFO
Okay 4.3

Pros: Was happy when I got off United Airline plane.

Cons: It was not Lufthansas, it was a crappy, old run down United Airline jet. I do not like flying with United. Was kind of tricked into this one. I would have paid more not to fly United.

FRA
CDG
Excellent 9.2

Pros: Comfortable seats, adequate legroom; clean aircraft, polite and professional crew.

Cons: Super crowded gate -- but that's more the CDG problem than Norwegian's one.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.
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