Expect long security lines at Heathrow. Ensure all liquids are in a small bag to avoid delays during manual screenings.

Most accurate provider | Mytrip 3 stars |
|---|---|
Most trusted provider | Mytrip 3 stars |
Round-trip from | $607 (Lufthansa) |
One-way from | $397 (Kiwi.com) |
Popular in | July |
Cheapest in | May |
Average price | $815 |
Good round-trip deal | $968 or less |
Good one-way deal | $810 or less |
Fly from
Fly to
Route
Depart
Return
Price
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Thu 3/19
4:40 pm-5:25 pm
1 stop16h 45m
Singapore Changi
Mon 3/23
11:55 pm-9:45 am
1 stop17h 50m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Mon 11/10
8:55 pm-9:35 am
1 stop28h 40m
Singapore Changi
Fri 11/14
7:25 pm-12:05 pm
1 stop24h 40m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Sun 11/23
8:50 am-9:35 am
1 stop16h 45m
Singapore Changi
Sun 11/30
7:25 pm-6:40 am
1 stop19h 15m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Thu 3/19
6:40 pm-6:00 pm
1 stop15h 20m
Singapore Changi
Sun 3/22
12:05 am-1:00 pm
1 stop20h 55m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Tue 3/17
2:25 pm-6:00 pm
2 stops19h 35m
Singapore Changi
Mon 3/23
12:05 am-1:40 pm
2 stops21h 35m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Tue 11/25
5:05 pm-6:35 pm
2 stops17h 30m
Singapore Changi
Fri 12/5
10:55 am-9:25 pm
1 stop18h 30m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Wed 2/25
2:25 pm-6:00 pm
2 stops19h 35m
Singapore Changi
Wed 3/4
12:05 am-1:40 pm
2 stops21h 35m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Tue 11/25
2:25 pm-6:00 pm
2 stops19h 35m
Singapore Changi
Thu 12/4
12:05 am-1:40 pm
2 stops21h 35m
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-5:05 pm
1 stop26h 30m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Fri 4/3
7:30 am-6:30 pm
1 stop28h 00m
Singapore Changi
Tue 4/21
9:35 pm-5:05 pm
1 stop26h 30m
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*1 star |
Booking 50 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to Singapore. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
Currently, May is the cheapest month in which you can book a flight from London Heathrow Airport to Singapore (average of $534). Flying from London Heathrow Airport to Singapore in July is currently the most expensive (average of $749). 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.
When flying from London Heathrow Airport to Singapore, the time of day you fly usually plays a role in the price. Save by searching for a flight in the afternoon, which can drop the price by up to 50% versus a flight at noon.
About 29% of weekly flights between London and Singapore have experienced delays in the past year, with the average delay time being 93 minutes.
Historically, flights departing at night 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, Qantas Airways have had the lowest number of delays on this route, with just 18% of flights being delayed.
Abu Dhabi (AUH) – chosen by Cheapflights users on 50% of 1-stop itineraries from London Heathrow Airport to Singapore on Cheapflights.
Flights via Istanbul (IST) have the shortest average one-way travel time for 1-stop routes: 16h 25m.
Flights via Istanbul (IST) have the shortest average one-way travel time for 1-stop routes: 16h 25m.
Flights via Istanbul (IST) offer the fastest connection on this route, with an average layover time of 2h 05m.
Overall
Comfort
Entertainment
Food
Boarding
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Overall
Comfort
Entertainment
Food
Boarding
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Overall
Comfort
Entertainment
Food
Boarding
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Overall
Comfort
Entertainment
Food
Boarding
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Overall
Comfort
Entertainment
Food
Boarding
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
Overall
Comfort
Entertainment
Food
Boarding
Crew
Reviews
Juliet,Oct 2025
PUS - SIN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$620 | Average$856 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$625 | Average$716 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$652 | Average$720 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$690 | Average$984 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$718 | Average$984 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$782 | Average$815 | FlexibilityNo cancel fee | On-time77% |