Cheap flights from San Francisco to Peterborough from CA $393

View CA $393 flight on Sat, Jul. 26, 2025Opens in a new window

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Cheap flights from San Francisco (SJC) to Peterborough (LHR)

Prices were available within the past 7 days and start at CA $393 for one-way flights and CA $616 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

TAP Portugal
Tue, Sep. 9 - Wed, Sep. 17
SFO
San Francisco
LHR
London
CA $616 Roundtrip, found 4 days ago
CA $616
Roundtrip
found 4 days ago
Select TAP Portugal flight, departing Tue, Sep. 9 from San Francisco to London, returning Wed, Sep. 17, priced at CA $616 found 4 days ago
United
Tue, Sep. 9 - Wed, Sep. 17
SFO
San Francisco
LHR
London
CA $681 Roundtrip, found 4 days ago
CA $681
Roundtrip
found 4 days ago
Select United flight, departing Tue, Sep. 9 from San Francisco to London, returning Wed, Sep. 17, priced at CA $681 found 4 days ago
KLM
Tue, Sep. 9 - Wed, Sep. 17
SFO
San Francisco
LHR
London
CA $696 Roundtrip, found 4 days ago
CA $696
Roundtrip
found 4 days ago
Select KLM flight, departing Tue, Sep. 9 from San Francisco to London, returning Wed, Sep. 17, priced at CA $696 found 4 days ago
Delta
Tue, Sep. 9 - Wed, Sep. 17
SFO
San Francisco
LHR
London
CA $696 Roundtrip, found 4 days ago
CA $696
Roundtrip
found 4 days ago
Select Delta flight, departing Tue, Sep. 9 from San Francisco to London, returning Wed, Sep. 17, priced at CA $696 found 4 days ago
Virgin Atlantic
Tue, Sep. 9 - Wed, Sep. 24
SFO
San Francisco
LHR
London
CA $699 Roundtrip, found 17 hours ago
CA $699
Roundtrip
found 17 hours ago
Select Virgin Atlantic flight, departing Tue, Sep. 9 from San Francisco to London, returning Wed, Sep. 24, priced at CA $699 found 17 hours ago
Virgin Atlantic
Mon, Sep. 8 - Tue, Sep. 16
SFO
San Francisco
LHR
London
CA $704 Roundtrip, found 6 days ago
CA $704
Roundtrip
found 6 days ago
Select Virgin Atlantic flight, departing Mon, Sep. 8 from San Francisco to London, returning Tue, Sep. 16, priced at CA $704 found 6 days ago

Find the cheapest month to fly from San Francisco (SFO) to London (LHR)

October is typically the cheapest month to fly

From CA $618 - CA $1,117 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.