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Get United's best fares today on flights from San Francisco to London from *

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Experience United Premium Plus on flights between San Francisco and London

United Premium Plus is our new option that offers more space, comfort and amenities. Seats are more spacious with additional legroom. Travelers can also look forward to upgraded dining, complimentary alcoholic beverages and high-end amenities. Learn more 

Low fare calendar for flights from San Francisco (SFO) to London (LHR)

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Friday
Saturday
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from
$945*
Viewed:14 hours ago
Economy
Return:02/08/20
27
from
$845*
Viewed:15 hours ago
Economy
Return:02/03/20
28
from
$845*
Viewed:15 hours ago
Economy
Return:02/04/20
29
from
$845*
Viewed:15 hours ago
Economy
Return:02/05/20
30
from
$831*
Viewed:14 hours ago
Economy
Return:02/25/20
31
from
$895*
Viewed:21 hours ago
Economy
Return:02/11/20
from
$737*
Viewed:17 hours ago
Economy
Return:02/25/20
Lowest PriceToday
*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Looking for additional flights from San Francisco to London?

FromToDatesFare TypePrice

San Francisco (SFO)

London (LHR)

Depart: 11/04/20

Return: 11/12/20

Roundtrip
from
$357*
Viewed:1dayago

San Francisco (SFO)

London (LHR)

Depart: 04/28/20

Return: 05/06/20

Roundtrip
from
$359*
Viewed:1dayago

San Francisco (SFO)

London (LHR)

Depart: 04/20/20

Return: 05/14/20

Roundtrip
from
$359*
Viewed:1dayago

San Francisco (SFO)

London (LHR)

Depart: 10/20/20

Return: 11/09/20

Roundtrip
from
$357*
Viewed:1dayago

San Francisco (SFO)

London (LHR)

Depart: 05/02/20

Return: 05/11/20

Roundtrip
from
$359*
Viewed:1dayago

San Francisco (SFO)

London (LHR)

Depart: 04/22/20

Return: 05/06/20

Roundtrip
from
$359*
Viewed:14hoursago

San Francisco (SFO)

London (LHR)

Depart: 04/08/20

Return: 04/17/20

Roundtrip
from
$356*
Viewed:19hoursago

San Francisco (SFO)

London (LHR)

Depart: 05/04/20

Return: 05/13/20

Roundtrip
from
$359*
Viewed:20hoursago

San Francisco (SFO)

London (LHR)

Depart: 04/29/20

Return: 05/06/20

Roundtrip
from
$359*
Viewed:13hoursago

San Francisco (SFO)

London (LHR)

Depart: 10/21/20

Return: 11/10/20

Roundtrip
from
$358*
Viewed:17hoursago

*Prices have been available for round trips within the last 48 hours and may not be currently available. Fares listed may be Basic Economy, which is our most restrictive fare option and subject to additional restrictions. Additional baggage charges and fees for other optional service may apply. Other terms and conditions may apply.

Weather in London

Sunday moderate rain
48°F 01/26/20
Monday light rain
48°F 01/27/20
Tuesday light snow
43°F 01/28/20
Wednesday sky is clear
43°F 01/29/20
Thursday overcast clouds
46°F 01/30/20
Friday overcast clouds
46°F 01/31/20
Saturday sky is clear
48°F 02/01/20
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