Flights from San Francisco to Welwyn

Cheapest flights from San Francisco

These prices were available within the past 7 days. Prices quoted are per person, round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$578 Roundtrip, found 2 hours ago

$578

Roundtrip

found 2 hours ago

Select Virgin Atlantic flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $578 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$578 Roundtrip, found 2 hours ago

$578

Roundtrip

found 2 hours ago

Select Delta flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $578 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$586 Roundtrip, found 2 hours ago

$586

Roundtrip

found 2 hours ago

Select American Airlines flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $586 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$586 Roundtrip, found 2 hours ago

$586

Roundtrip

found 2 hours ago

Select British Airways flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $586 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$620 Roundtrip, found 2 hours ago

$620

Roundtrip

found 2 hours ago

Select United flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $620 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$630 Roundtrip, found 2 hours ago

$630

Roundtrip

found 2 hours ago

Select KLM flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $630 found 2 hours ago

Sat, Sep 27 - Wed, Oct 8

SFO

San Francisco Intl.

LHR

Heathrow

$634 Roundtrip, found 4 days ago

$634

Roundtrip

found 4 days ago

Select Air Canada flight, departing Sat, Sep 27 from San Francisco Intl. to Heathrow, returning Wed, Oct 8, priced at $634 found 4 days ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$636 Roundtrip, found 2 hours ago

$636

Roundtrip

found 2 hours ago

Select Swiss International Air Lines flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $636 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$638 Roundtrip, found 2 hours ago

$638

Roundtrip

found 2 hours ago

Select Air France flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $638 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$645 Roundtrip, found 2 hours ago

$645

Roundtrip

found 2 hours ago

Select Lufthansa flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $645 found 2 hours ago

Wed, Sep 10 - Wed, Sep 24

SFO

San Francisco Intl.

LHR

Heathrow

$678 Roundtrip, found 1 day ago

$678

Roundtrip

found 1 day ago

Select TAP Portugal flight, departing Wed, Sep 10 from San Francisco Intl. to Heathrow, returning Wed, Sep 24, priced at $678 found 1 day ago

Wed, Sep 10 - Wed, Sep 24

SFO

San Francisco Intl.

LHR

Heathrow

$780 Roundtrip, found 1 day ago

$780

Roundtrip

found 1 day ago

Select JetBlue Airways flight, departing Wed, Sep 10 from San Francisco Intl. to Heathrow, returning Wed, Sep 24, priced at $780 found 1 day ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$784 Roundtrip, found 2 hours ago

$784

Roundtrip

found 2 hours ago

Select Aer Lingus flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $784 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$814 Roundtrip, found 2 hours ago

$814

Roundtrip

found 2 hours ago

Select Iberia flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $814 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$816 Roundtrip, found 2 hours ago

$816

Roundtrip

found 2 hours ago

Select Finnair flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $816 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$836 Roundtrip, found 2 hours ago

$836

Roundtrip

found 2 hours ago

Select Austrian Airlines flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $836 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$836 Roundtrip, found 2 hours ago

$836

Roundtrip

found 2 hours ago

Select Brussels Airlines flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $836 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$836 Roundtrip, found 2 hours ago

$836

Roundtrip

found 2 hours ago

Select Alaska Airlines flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $836 found 2 hours ago

Tue, Aug 19 - Fri, Aug 29

SFO

San Francisco Intl.

LHR

Heathrow

$838 Roundtrip, found 2 hours ago

$838

Roundtrip

found 2 hours ago

Select Scandinavian Airlines flight, departing Tue, Aug 19 from San Francisco Intl. to Heathrow, returning Fri, Aug 29, priced at $838 found 2 hours ago

Sat, Jul 12 - Mon, Jul 21

SFO

San Francisco Intl.

LCY

London City

$1,122 Roundtrip, found 4 days ago

$1,122

Roundtrip

found 4 days ago

Select Swiss International Air Lines flight, departing Sat, Jul 12 from San Francisco Intl. to London City, returning Mon, Jul 21, priced at $1,122 found 4 days ago