Cheap flights from Sydney to London from $474 SYD, WSI → LCY, LGW, LHR, LTN, STN
Sydney (Kingsford Smith) Airport (SYD), Western Sydney Airport (WSI) → London City Airport (LCY), London Gatwick Airport (LGW), London Heathrow Airport (LHR), London Luton Airport (LTN), Stansted Airport (STN)
The cheapest return found recently is $1,186 with Air China, 12 Jan 2027 – 19 Jan 2027, found 4 days ago. The cheapest one-way found recently is $474 with Air India, 21 Jun 2027, found 3 days ago.
- Cheapest one-way found recently
- $474, Air India, found 3 days ago
- Cheapest return found recently
- $1,186, 12 Jan 2027 to 19 Jan 2027
- Usual return price
- $1,188 to $1,333
- Cheapest month to fly
- January 2027, return fares from $1,186 found in the last 7 days
- Airlines with nonstop flights
- British Airways, Qantas
- Shortest nonstop flight found
- 24 h 50 min
Return
The cheapest return fare on each of 7 departure dates is usually $1,188 to $1,333.
Cheapest return found recently
$1,186
12 Jan 2027 – 19 Jan 2027 · Air China
Sydney (Kingsford Smith) Airport (SYD) → London Gatwick Airport (LGW)
Leaves 10:30 a.m. · Return leaves 8:15 a.m. · 76 h 45 min of travel, both ways together
out 3 stops, back 2 stops
found 4 days ago
Cheapest nonstop return
$1,941
2 Oct 2027 – 18 Oct 2027 · British Airways
Sydney (Kingsford Smith) Airport (SYD) → London Heathrow Airport (LHR)
Leaves 2:35 p.m. · Return leaves 9:05 p.m. · 47 h 5 min of travel, both ways together
out nonstop, back nonstop
found 6 days ago
Found recently, and the cheapest we hold
$1,186 12 Jan 2027 – 19 Jan 2027found 4 days agoSee prices for these dates
It is also the cheapest return we hold, of any age.
What have prices looked like?
Over 49 days, 24 Sept to 11 Nov, the cheapest return we saw each day was $797 to $1,327.
Those were the prices on those days, not today's.
Is this a good return price?
Compared with the cheapest return fare on each of 7 departure dates from 18 Nov to 2 Oct 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other 7-night return fares leaving within 3 days of 12 Jan 2027 to compare.
Every date we hold
80 fares on 7 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 18 Nov – 5 Jan 2027 | $1,367 | China Eastern | Sydney (Kingsford Smith) Airport (SYD) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 5 days ago | See prices for these dates |
| 11 Dec – 8 Jan 2027 | $1,633 | Jetstar | Sydney (Kingsford Smith) Airport (SYD) → London Gatwick Airport (LGW) | out 3 stops, back 3 stops | found 5 days ago | See prices for these dates |
| 12 Jan 2027 – 19 Jan 2027 | $1,186 | Air China | Sydney (Kingsford Smith) Airport (SYD) → London Gatwick Airport (LGW) | out 3 stops, back 2 stops | found 4 days ago | See prices for these dates |
| 26 Jan 2027 – 7 Feb 2027 | $1,189 | Air China | Sydney (Kingsford Smith) Airport (SYD) → London Gatwick Airport (LGW) | out 1 stop, back 2 stops | found 7 days ago | See prices for these dates |
| 15 Jun 2027 – 16 Jul 2027 | $1,212 | Air India | Sydney (Kingsford Smith) Airport (SYD) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
| 3 Sept 2027 – 17 Sept 2027 | $1,186 | China Southern Airlines | Sydney (Kingsford Smith) Airport (SYD) → London Heathrow Airport (LHR) | out 2 stops, back 2 stops | found 6 days ago | See prices for these dates |
| 2 Oct 2027 – 16 Oct 2027 | $1,298 | Etihad Airways | Sydney (Kingsford Smith) Airport (SYD) → London Heathrow Airport (LHR) | out 1 stop, back 1 stop | found 6 days ago | See prices for these dates |
Which month looks cheapest?
January 2027 is the cheapest month — from $1,186.
Airlines on the cheapest dates: Air China, China Eastern, Jetstar, Air India, China Southern Airlines, Etihad Airways.
One-way
The cheapest one-way fare on each of 3 departure dates is usually $516 to $560.
Cheapest one-way found recently
$474
21 Jun 2027 · Air India
Sydney (Kingsford Smith) Airport (SYD) → London Heathrow Airport (LHR)
Leaves 8:00 p.m. · 24 h 30 min trip
1 stop · via Indira Gandhi International Airport (DEL)
found 3 days ago
Cheapest nonstop one-way
$1,323
21 Jun 2027 · Qantas
Sydney (Kingsford Smith) Airport (SYD) → London Heathrow Airport (LHR)
Leaves 2:45 p.m. · 24 h 50 min trip
nonstop
found 3 days ago
Found recently, and the cheapest we hold
$474 21 Jun 2027found 3 days agoOpen this trip
It is also the cheapest one-way we hold, of any age.
What have prices looked like?
Over 32 days, 3 Oct to 11 Nov, the cheapest one-way we saw each day was $319 to $654.
Those were the prices on those days, not today's.
Is this a good one-way price?
Compared with the cheapest one-way fare on each of 3 departure dates from 10 Feb 2027 to 13 Oct 2027, found by travelers' searches in the last 7 days (economy, the price the seller showed on Aviasales). The usual range is the middle half of those prices.
Could nearby dates be cheaper?
We hold no other one-way fares leaving within 3 days of 21 Jun 2027 to compare.
Every date we hold
14 fares on 3 departure dates
See the chart as a table
| Dates | From | Airline | Airports | Stops | Found | |
|---|---|---|---|---|---|---|
| 10 Feb 2027 | $558 | China Southern Airlines | Sydney (Kingsford Smith) Airport (SYD) → London Gatwick Airport (LGW) | stops unknown | found 5 days ago | Open this trip |
| 21 Jun 2027 | $474 | Air India | Sydney (Kingsford Smith) Airport (SYD) → London Heathrow Airport (LHR) | 1 stop | found 3 days ago | Open this trip |
| 13 Oct 2027 | $562 | Air India | Sydney (Kingsford Smith) Airport (SYD) → London Heathrow Airport (LHR) | 1 stop | found 5 days ago | Open this trip |
Which month looks cheapest?
June 2027 is the cheapest month — from $474.
Airlines on the cheapest dates: Air India, China Southern Airlines.
Premium cabin fares from Sydney to London
We hold no premium economy, business or first-class fares for this route: we collect them for the busiest routes, and this one is not among them yet.
Today's prices for 12 Jan 2027 – 19 Jan 2027 in another cabin: Premium economy · Business · First
Today's prices for 21 Jun 2027 in another cabin: Premium economy · Business · First
How far ahead were prices cheapest for Sydney to London?
Return
The cheapest fares were 7 to 13 days before departure.
From the cheapest return each day between 24 Sept and 11 Nov (49 days), grouped by how many days ahead the flight left; one adult in economy.
Each range covers different departure dates, so this compares typical fares, not the same trip priced twice.
Prices reflect recent searches — current fares may differ.
See these ranges as a table
| Booked ahead by | Typical fare | Cheapest day | Above the cheapest | Days of prices |
|---|---|---|---|---|
| 0–6 days | $976 | $813 | +1% | 28 |
| 7–13 days | $969 | $813 | Cheapest seen | 27 |
| 14–29 days | $1,066 | $797 | +10% | 31 |
| 30–59 days | $1,064 | $903 | +10% | 33 |
| 60–89 days | $1,275 | $1,030 | +32% | 40 |
| 90–179 days | $1,029 | $868 | +6% | 38 |
| 180+ days | $1,182 | $999 | +22% | 26 |
One-way
Not enough history yet: in 32 days of one-way prices, 3 Oct to 11 Nov, fewer than 3 booking ranges had prices on 7 days or more.
Live price for these dates
The cheapest return found recently is for 12 Jan 2027 – 19 Jan 2027. A live search on this page shows what those dates cost now, for one adult in economy.
Questions about this trip
How much is a return flight from Sydney to London?
The cheapest return found recently is $1,186 with Air China, 12 Jan 2027 to 19 Jan 2027, found 4 days ago. The cheapest return fare on each of 7 departure dates is usually $1,188 to $1,333.
How much is a one-way flight from Sydney to London?
The cheapest one-way found recently is $474 with Air India, 21 Jun 2027, found 3 days ago. The cheapest one-way fare on each of 3 departure dates is usually $516 to $560.
What is the cheapest month to fly from Sydney to London?
January 2027 is the cheapest month for a return, from $1,186, 12 Jan 2027 to 19 Jan 2027, found 4 days ago. June 2027 is the cheapest month for a one-way, from $474, 21 Jun 2027, found 3 days ago.
How far ahead should I book a flight from Sydney to London?
In 49 days of prices between 24 Sept and 11 Nov, return fares were cheapest 7 to 13 days before departure.
Is there a direct flight from Sydney to London?
Yes, the cheapest nonstop return found recently is $1,941 with British Airways, 2 Oct 2027 to 18 Oct 2027, found 6 days ago. The cheapest nonstop one-way found recently is $1,323 with Qantas, 21 Jun 2027, found 3 days ago.
How long is the flight from Sydney to London?
The cheapest nonstop one-way found recently, with Qantas on 21 Jun 2027, takes 24 h 50 min from Sydney (Kingsford Smith) Airport (SYD) to London Heathrow Airport (LHR). The cheapest one-way found recently, with Air India on 21 Jun 2027, takes 24 h 30 min with 1 stop.
Which airlines have the cheapest flights from Sydney to London?
Between 18 Nov and 2 Oct 2027, Air China has the cheapest return on 2 of the 7 departure dates we hold, China Eastern on 1 and Jetstar on 1. Between 10 Feb 2027 and 13 Oct 2027, Air India has the cheapest one-way on 2 of the 3 departure dates we hold, and China Southern Airlines on 1.
Prices are what travelers' searches on Aviasales found in the last 7 days, in US dollars: the price the seller showed on Aviasales; bags may cost extra. Fares change, so check today's price before you book. How our prices work