Flight route
Cheap Flights from Sydney to London
SYD → LHR~23h, usually 1 stop
Find the cheapest days to fly
Compare flight options from Sydney to London.
Departing Sep 2026
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Returning Sep 2026
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Depart
Sat 5/Sep
Return
Sat 12/Sep
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About the Sydney to London route
Flights from Sydney (SYD) to London (LHR) in United Kingdom take ~23h, usually 1 stop. Prices vary by season and how far ahead you book — use the fare calendar above to spot the cheapest dates, then tap through to compare and book.
Cheapest Sydney to London Return Prices
These are the cheapest prices for Sydney to London return airfares.
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Live fares · 1 adult · Economy · sampled mid-month, 7-night trip. Lowest available fare for that departure.
Average Sydney to London Return Prices
These are the average prices for Sydney to London return airfares.
Checking live fares…
Live fares · 1 adult · Economy · sampled mid-month, 7-night trip. Average of available fares for that departure.