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

Most accurate provider | eDreams 3 stars |
|---|---|
Most trusted provider | eDreams 3 stars |
Round-trip from | $629 (Kiwi.com) |
One-way from | $408 (Kiwi.com) |
Popular in | July |
Cheapest in | May |
Average price | $1,100 |
Good round-trip deal | $954 or less |
Good one-way deal | $704 or less |
Fly from
Fly to
Route
Depart
Return
Price
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Thu 1/22
9:50 pm-12:30 pm
1 stop30h 40m
Singapore Changi
Sun 3/1
8:00 pm-6:35 am
1 stop18h 35m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Thu 2/12
9:30 am-12:30 pm
1 stop19h 00m
Singapore Changi
Mon 2/16
8:00 pm-6:35 am
1 stop18h 35m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Thu 4/23
9:45 am-7:30 pm
1 stop26h 45m
Singapore Changi
Fri 5/22
2:35 pm-10:15 am
2 stops26h 40m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Fri 4/10
1:15 pm-7:30 pm
1 stop23h 15m
Singapore Changi
Mon 4/20
2:35 pm-7:30 am
2 stops23h 55m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Tue 3/3
2:25 pm-6:00 pm
2 stops19h 35m
Singapore Changi
Mon 3/9
12:05 am-1:40 pm
2 stops21h 35m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Sun 2/8
8:10 pm-5:40 pm
Nonstop13h 30m
Singapore Changi
Mon 2/16
11:05 pm-6:15 am
Nonstop15h 10m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Thu 4/23
9:25 am-5:30 am
Nonstop13h 05m
Singapore Changi
Fri 5/22
11:00 pm-5:55 am
Nonstop13h 55m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Sun 4/19
11:25 am-7:30 am
Nonstop13h 05m
Singapore Changi
Sun 5/24
9:00 am-3:45 pm
Nonstop13h 45m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Wed 4/15
10:00 pm-6:40 pm
Nonstop13h 40m
Singapore Changi
Wed 4/22
11:20 pm-6:35 am
Nonstop14h 15m
LondonSingapore
LHR - SIN
LHRSIN
London Heathrow
Mon 1/12
9:50 pm-12:30 pm
1 stop30h 40m
Singapore Changi
Tue 4/14
8:00 pm-3:20 pm
1 stop26h 20m
| 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*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 $536). Flying from London Heathrow Airport to Singapore in July is currently the most expensive (average of $743). 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 27% of weekly flights between London and Singapore have experienced delays in the past year, with the average delay time being 111 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, Qantas Airways have had the lowest number of delays on this route, with just 14% 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.
Abu Dhabi (AUH) is the most affordable 1-stop option, with an average round-trip price of $652.
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.
Comfort
Entertainment
Crew
Food
Overall
Boarding
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Entertainment
Crew
Food
Overall
Boarding
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Entertainment
Crew
Food
Overall
Boarding
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Entertainment
Crew
Food
Overall
Boarding
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Entertainment
Crew
Food
Overall
Boarding
Reviews
Juliet,Oct 2025
PUS - SIN
Comfort
Entertainment
Crew
Food
Overall
Boarding
Reviews
Juliet,Oct 2025
PUS - SIN
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$620 | Average$849 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$645 | Average$716 | FlexibilityNo cancel fee | On-time67% | |
| Cheapest$649 | Average$720 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$732 | Average$961 | FlexibilityNo cancel fee | On-time81% | |
| Cheapest$782 | Average$815 | FlexibilityNo cancel fee | On-time77% |