Find Cheap Flights from San Francisco to London Heathrow (SFO - LHR)

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Wed 1/17
Wed 1/24
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Good to Know

Low Season:
February
Best time to beat the crowds
4%
expected price decrease
High Season:
July
Most popular time to fly
22%
expected price increase
Average Price:
$1424
(avg. price over the last 2 weeks)
Good Deal:
$823
or less (round trip)

When to Book Flights from San Francisco to London Heathrow

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 $822 or less.
The cheapest flight from San Francisco to London Heathrow was found 39 days before departure, on average.
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 San Francisco to London Heathrow Flights

How long does a flight from San Francisco to London Heathrow take?
An average nonstop flight takes 10h 30m, covering a distance of 5355 miles.
How many flights are there between San Francisco and London Heathrow?
There are 389 (nonstop) flights between San Francisco and London Heathrow per week, averaging 55 per day.
Which airlines provide the cheapest flights from San Francisco to London Heathrow?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($516) and Brussels Airlines ($527)
Do I need a passport to fly between San Francisco and London Heathrow?
Yes.
Which airlines fly most frequently between San Francisco and London Heathrow?
Air New Zealand (8 times daily), Delta (6 times daily), Virgin Atlantic (6 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly San Francisco to London Heathrow?
For San Francisco to London Heathrow, Tuesday is the cheapest day to fly on average and Monday is the most expensive. Flying from London Heathrow back to San Francisco, the best deals are generally found on Monday, with Sunday being the most expensive.

Book cheap flights from San Francisco to London Heathrow (round-trip)

Airports
Origin
San Francisco
$516
only
$516
Destination
London
$516
only
$516
Tue, May 1
SFO
LHR
24h 03m
Sat, May 26
LHR
SFO
40h 05m
Trip: 26 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Feb 12
SFO
LHR
10h 30m
Tue, Mar 6
LHR
SFO
21h 43m
Trip: 23 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 6 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
ACC
BRU
Okay 5.6

food

TXL
BRU
Excellent 8.0

Also a good airline, though the a la cart...

The a la carte approach that includes charging 3 euros for water. I mean, seriously?

TLV
BRU
Okay 5.0

Crew was polite, but...

The flight attendants seemed unused to the idea that Orthodox Jews won't sit beside people of the opposite sex. This made boarding take longer than it needed to. The airline should figure out a way to streamline this process on flights to/from Tel Aviv.

SFO
LHR
Excellent 8.0

quick and easy

being in the middle seat

SFO
LHR
Mediocre 3.6

couldn't checked in online. At the airport, self checking required assistance. The time the staff figure out the problem, it was past the check-in deadline and they couldn't check me in anymore. They put me on a flight via Newark instead that is 3 hours later. At Newark, the connection to London is 10 hours late!! After taking off, the plane goes for 2 hours before landing back in Newark because of technical issue!!!!!!!! Changed flight, and arrived in London after 2 days spent in plane/airport !!!!!!!!!

Thu, Mar 1
SFO
LHR
14h 25m
Sun, Mar 18
LHR
SFO
28h 20m
Trip: 17 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Feb 13
SFO
LHR
10h 30m
Tue, Mar 6
LHR
SFO
21h 43m
Trip: 22 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 6 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
LHR
BRU
Excellent 9.5

Crew members were very friendly, plane was clean, seats were comfortable, and flight was much quicker than what I thought it was going to be. Boarding was a tiny bit unorganized, but overall flight was great.

Boarding was a bit disorganized. I had brought my carry-on but the lady at the counter said I had to check it with baggage (which ended up getting delayed once we landed for an additional 15 minutes)

ABJ
BRU
Excellent 10.0

Everything

SFO
LHR
Excellent 8.0

The flight attendants were professional and actually smiled often! The food served was tasty and they made sure we had plenty of water throughout the flight.

A crying baby for most of the flight. I offered to help the Mom a bit. Couldn't be helped by the airline of course.

ACC
BRU
Okay 5.6

food

TLV
BRU
Okay 5.0

Crew was polite, but...

The flight attendants seemed unused to the idea that Orthodox Jews won't sit beside people of the opposite sex. This made boarding take longer than it needed to. The airline should figure out a way to streamline this process on flights to/from Tel Aviv.

Wed, Mar 7
SFO
LHR
15h 30m
Wed, Mar 21
LHR
SFO
15h 30m
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Feb 14
SFO
LHR
10h 30m
Tue, Mar 6
LHR
SFO
21h 43m
Trip: 21 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 6 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
EDI
BRU
Excellent 8.3

It was easy boarding. The flight crew had been been late due to a bad taxi driver. We still arrived on time!

No complaints.

TXL
BRU
Excellent 8.0

Also a good airline, though the a la cart...

The a la carte approach that includes charging 3 euros for water. I mean, seriously?

SFO
LHR
Excellent 8.0

quick and easy

being in the middle seat

ABJ
BRU
Excellent 10.0

Everything

ACC
BRU
Okay 5.6

food

Mon, Mar 12
SFO
LHR
12h 40m
Mon, Mar 19
LHR
SFO
15h 30m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Feb 15
SFO
LHR
10h 30m
Tue, Mar 6
LHR
SFO
21h 43m
Trip: 20 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 6 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
BRU
JFK
Excellent 10.0

Everything

DME
BRU
Good 6.3

You have to pay for any drink and snacks in flight

LHR
BRU
Excellent 9.5

Crew members were very friendly, plane was clean, seats were comfortable, and flight was much quicker than what I thought it was going to be. Boarding was a tiny bit unorganized, but overall flight was great.

Boarding was a bit disorganized. I had brought my carry-on but the lady at the counter said I had to check it with baggage (which ended up getting delayed once we landed for an additional 15 minutes)

ABJ
BRU
Excellent 10.0

Everything

SFO
LHR
Mediocre 3.6

couldn't checked in online. At the airport, self checking required assistance. The time the staff figure out the problem, it was past the check-in deadline and they couldn't check me in anymore. They put me on a flight via Newark instead that is 3 hours later. At Newark, the connection to London is 10 hours late!! After taking off, the plane goes for 2 hours before landing back in Newark because of technical issue!!!!!!!! Changed flight, and arrived in London after 2 days spent in plane/airport !!!!!!!!!

Mon, Feb 12
SFO
LHR
10h 30m
Fri, Mar 16
LHR
SFO
15h 30m
Trip: 32 days
Overall 0.0 Poor
Based on 0 reviews
Fri, Mar 2
SFO
LHR
10h 30m
Thu, Mar 22
LHR
SFO
20h 43m
Trip: 20 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 6 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
LHR
BRU
Excellent 9.5

Crew members were very friendly, plane was clean, seats were comfortable, and flight was much quicker than what I thought it was going to be. Boarding was a tiny bit unorganized, but overall flight was great.

Boarding was a bit disorganized. I had brought my carry-on but the lady at the counter said I had to check it with baggage (which ended up getting delayed once we landed for an additional 15 minutes)

ACC
BRU
Okay 5.6

food

SFO
LHR
Mediocre 3.6

couldn't checked in online. At the airport, self checking required assistance. The time the staff figure out the problem, it was past the check-in deadline and they couldn't check me in anymore. They put me on a flight via Newark instead that is 3 hours later. At Newark, the connection to London is 10 hours late!! After taking off, the plane goes for 2 hours before landing back in Newark because of technical issue!!!!!!!! Changed flight, and arrived in London after 2 days spent in plane/airport !!!!!!!!!

TXL
BRU
Excellent 8.0

Also a good airline, though the a la cart...

The a la carte approach that includes charging 3 euros for water. I mean, seriously?

DME
BRU
Good 6.3

You have to pay for any drink and snacks in flight

Tue, Feb 13
SFO
LHR
10h 30m
Tue, Mar 13
LHR
SFO
15h 30m
Trip: 28 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Mar 3
SFO
LHR
10h 30m
Thu, Mar 22
LHR
SFO
20h 43m
Trip: 19 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 6 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
EDI
BRU
Excellent 8.3

It was easy boarding. The flight crew had been been late due to a bad taxi driver. We still arrived on time!

No complaints.

SFO
LHR
Excellent 10.0

Good food, complimentary beer and wine, and good staff. And all-around pleasant experience :-)

TLV
BRU
Okay 5.0

Crew was polite, but...

The flight attendants seemed unused to the idea that Orthodox Jews won't sit beside people of the opposite sex. This made boarding take longer than it needed to. The airline should figure out a way to streamline this process on flights to/from Tel Aviv.

SFO
LHR
Excellent 8.0

quick and easy

being in the middle seat

SFO
LHR
Mediocre 3.6

couldn't checked in online. At the airport, self checking required assistance. The time the staff figure out the problem, it was past the check-in deadline and they couldn't check me in anymore. They put me on a flight via Newark instead that is 3 hours later. At Newark, the connection to London is 10 hours late!! After taking off, the plane goes for 2 hours before landing back in Newark because of technical issue!!!!!!!! Changed flight, and arrived in London after 2 days spent in plane/airport !!!!!!!!!

Thu, Feb 15
SFO
LHR
10h 30m
Thu, Feb 22
LHR
SFO
18h 20m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Mar 4
SFO
LHR
10h 30m
Thu, Mar 22
LHR
SFO
20h 43m
Trip: 18 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 6 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
LHR
Excellent 8.0

quick and easy

being in the middle seat

EDI
BRU
Excellent 8.3

It was easy boarding. The flight crew had been been late due to a bad taxi driver. We still arrived on time!

No complaints.

SFO
LHR
Excellent 8.0

The flight attendants were professional and actually smiled often! The food served was tasty and they made sure we had plenty of water throughout the flight.

A crying baby for most of the flight. I offered to help the Mom a bit. Couldn't be helped by the airline of course.

SFO
LHR
Excellent 10.0

Good food, complimentary beer and wine, and good staff. And all-around pleasant experience :-)

LHR
BRU
Excellent 9.5

Crew members were very friendly, plane was clean, seats were comfortable, and flight was much quicker than what I thought it was going to be. Boarding was a tiny bit unorganized, but overall flight was great.

Boarding was a bit disorganized. I had brought my carry-on but the lady at the counter said I had to check it with baggage (which ended up getting delayed once we landed for an additional 15 minutes)

Sun, Feb 18
SFO
LHR
10h 30m
Thu, Mar 15
LHR
SFO
15h 30m
Trip: 25 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Mar 5
SFO
LHR
10h 30m
Thu, Mar 22
LHR
SFO
20h 43m
Trip: 17 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 6 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
LHR
Mediocre 3.6

couldn't checked in online. At the airport, self checking required assistance. The time the staff figure out the problem, it was past the check-in deadline and they couldn't check me in anymore. They put me on a flight via Newark instead that is 3 hours later. At Newark, the connection to London is 10 hours late!! After taking off, the plane goes for 2 hours before landing back in Newark because of technical issue!!!!!!!! Changed flight, and arrived in London after 2 days spent in plane/airport !!!!!!!!!

BRU
JFK
Excellent 10.0

Everything

EDI
BRU
Excellent 8.3

It was easy boarding. The flight crew had been been late due to a bad taxi driver. We still arrived on time!

No complaints.

SFO
LHR
Excellent 10.0

Good food, complimentary beer and wine, and good staff. And all-around pleasant experience :-)

SFO
LHR
Excellent 8.0

quick and easy

being in the middle seat

Mon, Feb 19
SFO
LHR
10h 30m
Mon, Mar 5
LHR
SFO
15h 30m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 6
SFO
LHR
10h 30m
Thu, Mar 22
LHR
SFO
20h 43m
Trip: 16 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 6 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
TXL
BRU
Excellent 8.0

Also a good airline, though the a la cart...

The a la carte approach that includes charging 3 euros for water. I mean, seriously?

BRU
JFK
Excellent 10.0

Everything

DME
BRU
Good 6.3

You have to pay for any drink and snacks in flight

SFO
LHR
Excellent 8.0

The flight attendants were professional and actually smiled often! The food served was tasty and they made sure we had plenty of water throughout the flight.

A crying baby for most of the flight. I offered to help the Mom a bit. Couldn't be helped by the airline of course.

EDI
BRU
Excellent 8.3

It was easy boarding. The flight crew had been been late due to a bad taxi driver. We still arrived on time!

No complaints.

Wed, Feb 21
SFO
LHR
10h 30m
Sun, Mar 11
LHR
SFO
28h 20m
Trip: 19 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Mar 8
SFO
LHR
10h 30m
Thu, Mar 22
LHR
SFO
20h 43m
Trip: 14 days
8.3ExcellentShow reviews
Overall 8.3 Excellent
Based on 6 reviews
Overall
7.1
Boarding
7.1
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
SFO
LHR
Excellent 8.0

quick and easy

being in the middle seat

SFO
LHR
Mediocre 3.6

couldn't checked in online. At the airport, self checking required assistance. The time the staff figure out the problem, it was past the check-in deadline and they couldn't check me in anymore. They put me on a flight via Newark instead that is 3 hours later. At Newark, the connection to London is 10 hours late!! After taking off, the plane goes for 2 hours before landing back in Newark because of technical issue!!!!!!!! Changed flight, and arrived in London after 2 days spent in plane/airport !!!!!!!!!

ABJ
BRU
Excellent 10.0

Everything

SFO
LHR
Excellent 8.0

The flight attendants were professional and actually smiled often! The food served was tasty and they made sure we had plenty of water throughout the flight.

A crying baby for most of the flight. I offered to help the Mom a bit. Couldn't be helped by the airline of course.

LHR
BRU
Excellent 9.5

Crew members were very friendly, plane was clean, seats were comfortable, and flight was much quicker than what I thought it was going to be. Boarding was a tiny bit unorganized, but overall flight was great.

Boarding was a bit disorganized. I had brought my carry-on but the lady at the counter said I had to check it with baggage (which ended up getting delayed once we landed for an additional 15 minutes)

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Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
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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.

San Francisco to London Heathrow Flight Information

Flights Arrive in London Heathrow
Flights Depart from San Francisco
Flight Price $516
Distance 5355 miles
Airlines Brussels Airlines