How far ahead should I book a flight from London Heathrow Airport to Singapore with Singapore Airlines?

Booking with Singapore Airlines 82 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.

What is the cheapest month to book a flight from London Heathrow Airport to Singapore with Singapore Airlines?

Currently, the most affordable month to book a Singapore Airlines flight from London Heathrow Airport to Singapore in May, with an average price of £579. Conversely, traveling with Singapore Airlines from London Heathrow Airport to Singapore in July will be the most expensive, with an average cost of £912. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

Weekly Singapore Airlines flight availability from London Heathrow Airport to Singapore

The most Singapore Airlines flights from LHR to SIN are scheduled on a Monday (4 on average). You will have fewer Singapore Airlines flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

In terms of precipitation, rainfall in Singapore ranges from 150.0 - 269.0 inches per month. December is typically the wettest month, when rainfall can reach 269.0 mm. July is typically the driest time to visit Singapore when rainfall is around 150.0 mm.

If weather is an important factor for your trip to Singapore, use this chart to help with planning. For those seeking warmer temperatures, March is the ideal time of year to visit, when temperatures reach an average of 28.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 26.0 C).

£604+ Singapore Airlines Flights from Heathrow to Singapore

Cheapflights users flying from London to Singapore on Singapore Airlines typically fly into Singapore Changi and depart from London Heathrow. Select your dates above for pricing.

Singapore Airlines flights from Heathrow to Singapore in 2026

One-way from	£604
Return from	£658
Popular in	July
Cheapest in	September
Average price (all airlines)	£582

Singapore Airlines
22/10
Nonstop
13h 10m total
London to Singapore

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Singapore Airlines
28/6-10/7
Nonstop
27h 05m total
London to Singapore

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Highest demand for flights from London Heathrow to Singapore Changi; 11% potential price increase.

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Best time to find cheap flights from London Heathrow to Singapore Changi; 3% potential price drop.

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Average price for all London Heathrow to Singapore Changi flights (one-way and round-trip).

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Cheapest Singapore Airlines flights from Heathrow to Singapore
Explore the most affordable Singapore Airlines flight options available from Heathrow to Singapore. Find the lowest fares with prices last updated on 22 May 2026.

Sun 28/609:25

LHR

SIN

Nonstop13h 20m

Singapore Airlines

Fri 10/709:00

SIN

LHR

Nonstop13h 45m

Singapore Airlines

Deal found 18/5£658

Sun 28/609:25

LHR

SIN

Nonstop13h 20m

Singapore Airlines

Sun 12/712:35

SIN

LHR

Nonstop13h 55m

Singapore Airlines

Deal found 18/5£659

Mon 8/620:35

LHR

SIN

Nonstop13h 10m

Singapore Airlines

Mon 22/623:00

SIN

LHR

Nonstop13h 55m

Singapore Airlines

Deal found 19/5£1,206

Prices

Airlines

When is the best time to book a flight to Singapore with Singapore Airlines?

The best time to book a flight to Singapore with Singapore Airlines is 82 days before departure. On average, fares are higher if you book 1 day before departure.

Which month is the cheapest to fly Economy class from London Heathrow Airport to Singapore?

For Economy class flights, the cheapest month to fly this route is May. The most expensive months are July and August.

Best time to book a flight from Heathrow to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Heathrow with our price prediction graph.

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Singapore Airlines flights from London Heathrow Airport to Singapore (LHR - SIN)

Cheapflights users flying from London to Singapore on Singapore Airlines typically fly into Singapore Changi and depart from London Heathrow. Select your dates above for pricing.

Singapore Airlines flights from Heathrow to Singapore in 2026

Find detailed information about Singapore Airlines flights from Heathrow to Singapore. Explore the options provided by Singapore Airlines to plan your journey from Heathrow to Singapore. Data last updated 22 May 2026.

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Find Singapore Airlines flight deals from Heathrow to Singapore

Cheapest Singapore Airlines flights from Heathrow to SingaporeExplore the most affordable Singapore Airlines flight options available from Heathrow to Singapore. Find the lowest fares with prices last updated on 22 May 2026.

Explore the most affordable Singapore Airlines flight options available from Heathrow to Singapore. Find the lowest fares with prices last updated on 22 May 2026.

Best Singapore Airlines flights from Heathrow to SingaporeDiscover carefully curated Singapore Airlines flight deals from Heathrow to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 May 2026.

Discover carefully curated Singapore Airlines flight deals from Heathrow to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 May 2026.

Direct Singapore Airlines flights from Heathrow to SingaporeExplore direct Singapore Airlines flight options from Heathrow to Singapore based on user searches, and compare prices and availability for your desired travel dates. Data last updated 22 May 2026.

Explore direct Singapore Airlines flight options from Heathrow to Singapore based on user searches, and compare prices and availability for your desired travel dates. Data last updated 22 May 2026.

Last-minute Singapore Airlines flights from Heathrow to SingaporeDiscover last-minute Singapore Airlines flight deals from Heathrow to Singapore. Data last updated 22 May 2026 and is based on user searches.

Discover last-minute Singapore Airlines flight deals from Heathrow to Singapore. Data last updated 22 May 2026 and is based on user searches.

One-way Singapore Airlines flights to SingaporeSearch for one-way Singapore Airlines flight options to Singapore. Find affordable one-way fares based on user searches. Data last updated 22 May 2026.

Search for one-way Singapore Airlines flight options to Singapore. Find affordable one-way fares based on user searches. Data last updated 22 May 2026.

When is the best time to book a flight to Singapore with Singapore Airlines?

Which month is the cheapest to fly Economy class from London Heathrow Airport to Singapore?

Weekly Singapore Airlines flight availability from London Heathrow Airport to Singapore

Rainfall in Singapore by month

Temperature in Singapore by month

Best time to book a flight from Heathrow to Singapore

Have a flexible travel schedule? Discover the best time to fly to Singapore from Heathrow with our price prediction graph.

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Fly from Heathrow to Singapore on another airline

Consider alternative airlines that service the Singapore area. Flight routes are based on user searches made on Cheapflights and were last updated on 22 May 2026.

Other Singapore Airlines flights from Heathrow

Browse through other Singapore Airlines flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 22 May 2026.

Complete your trip

Complete your trip to Singapore by adding a car hire and/or hotel booking to your travel itinerary.

Other airlines servicing Heathrow and Singapore

Choose from other airlines serving Heathrow and Singapore.

Other popular destinations in Asia

If Singapore is not for you, choose from these other destinations located in Asia. Flight routes are based on user searches made on Cheapflights and were last updated on 22 May 2026.

Popular flights with Singapore Airlines

Browse through some of the most popular routes that Singapore Airlines offers at this time. Flights are based on user searches made on Cheapflights and were last updated on 22 May 2026.

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Cheapest Singapore Airlines flights from Heathrow to Singapore
Explore the most affordable Singapore Airlines flight options available from Heathrow to Singapore. Find the lowest fares with prices last updated on 22 May 2026.

Best Singapore Airlines flights from Heathrow to Singapore
Discover carefully curated Singapore Airlines flight deals from Heathrow to Singapore that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 22 May 2026.

Direct Singapore Airlines flights from Heathrow to Singapore
Explore direct Singapore Airlines flight options from Heathrow to Singapore based on user searches, and compare prices and availability for your desired travel dates. Data last updated 22 May 2026.

Last-minute Singapore Airlines flights from Heathrow to Singapore
Discover last-minute Singapore Airlines flight deals from Heathrow to Singapore. Data last updated 22 May 2026 and is based on user searches.

One-way Singapore Airlines flights to Singapore
Search for one-way Singapore Airlines flight options to Singapore. Find affordable one-way fares based on user searches. Data last updated 22 May 2026.