Heathrow's strict security can delay you. Ensure liquids are in one bag and remove suspicious items to avoid long waits.

Most accurate provider | Justfly.com 3 stars |
|---|---|
Most trusted provider | Justfly.com 3 stars |
Round-trip from | $631 (Lufthansa) |
One-way from | $405 (Trip.com) |
Popular in | December |
Cheapest in | May |
Average price | $734 |
Good round-trip deal | $820 or less |
Good one-way deal | $871 or less |
Fly from
Fly to
Route
Depart
Return
Price
LondonSingapore
LGW - SIN
LGWSIN
London Gatwick
Thu 3/5
5:00 pm-10:00 pm
1 stop21h 00m
Singapore Changi
Mon 3/9
12:40 pm-2:00 pm
2 stops57h 20m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Thu 4/23
7:30 am-6:30 pm
1 stop28h 00m
Singapore Changi
Thu 5/28
9:35 pm-3:10 pm
1 stop24h 35m
LondonSingapore
LGW - SIN
LGWSIN
London Gatwick
Tue 5/5
10:15 am-6:20 am
Nonstop13h 05m
Singapore Changi
Tue 5/12
11:55 pm-6:25 am
Nonstop13h 30m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Wed 1/21
2:25 pm-6:00 pm
2 stops19h 35m
Singapore Changi
Wed 1/28
12:05 am-1:40 pm
2 stops21h 35m
LondonSingapore
LGW - SIN
LGWSIN
London Gatwick
Sun 3/1
6:40 pm-6:00 pm
1 stop15h 20m
Singapore Changi
Fri 3/20
12:05 am-10:40 am
2 stops18h 35m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Tue 5/5
11:25 am-7:30 am
Nonstop13h 05m
Singapore Changi
Tue 5/12
9:00 am-3:45 pm
Nonstop13h 45m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Thu 4/23
11:25 am-7:30 am
Nonstop13h 05m
Singapore Changi
Thu 5/28
12:35 pm-7:30 pm
Nonstop13h 55m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Wed 4/1
7:30 am-6:30 pm
1 stop28h 00m
Singapore Changi
Mon 4/20
9:35 pm-3:10 pm
1 stop24h 35m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Thu 3/5
8:10 pm-5:40 pm
Nonstop13h 30m
Singapore Changi
Mon 3/9
11:05 pm-6:15 am
Nonstop15h 10m
LondonSingapore
LGW - SIN
LGWSIN
London Gatwick
Sun 1/25
9:25 am-6:15 am
Nonstop12h 50m
Singapore Changi
Sun 2/8
11:55 pm-6:25 am
Nonstop14h 30m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars |
The price you pay for your flight from London to Singapore may vary depending on when you book. For the best chance of a lower fare, look to book 11 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
Currently, May is the cheapest month in which you can book a flight from London to Singapore (average of $523). Flying from London to Singapore in July is currently the most expensive (average of $690). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
It’s optimal to fly from London to Singapore in the afternoon. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight at noon.
The most flights from LON to SIN are scheduled on a Wednesday (37 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (33 on average).
Manama (BAH) – chosen by Cheapflights users on 38% of 1-stop itineraries from London to Singapore on Cheapflights.
Mumbai (BOM) is the most affordable 1-stop option, with an average round-trip price of $490.
Flights via Zurich (ZRH) have the shortest average one-way travel time for 1-stop routes: 15h 25m.
Flights via Zurich (ZRH) offer the fastest connection on this route, with an average layover time of 1h 05m.
About 27% of weekly flights between London and Singapore have experienced delays in the past year, with the average delay time being 107 minutes.
Historically, flights departing in the evening are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
Saturday tends to have the lowest number of delays on this route, whereas Thursday has historically faced a higher average of delays compared to other days of the week.
Over the last year, Atlas Air have had the lowest number of delays on this route, with no flights being classified as delayed.
Food
Boarding
Overall
Crew
Comfort
Entertainment
Reviews
Juliet,Oct 2025
PUS - SIN
Food
Boarding
Overall
Crew
Comfort
Entertainment
Reviews
Juliet,Oct 2025
PUS - SIN
Food
Boarding
Overall
Crew
Comfort
Entertainment
Reviews
Juliet,Oct 2025
PUS - SIN
Food
Boarding
Overall
Crew
Comfort
Entertainment
Reviews
Juliet,Oct 2025
PUS - SIN
Food
Boarding
Overall
Crew
Comfort
Entertainment
Reviews
Juliet,Oct 2025
PUS - SIN
Food
Boarding
Overall
Crew
Comfort
Entertainment
Reviews
Juliet,Oct 2025
PUS - SIN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$620 | Average$856 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$645 | Average$716 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$649 | Average$720 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$690 | Average$984 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$732 | Average$980 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$782 | Average$815 | FlexibilityNo cancel fee | On-time77% |