When is the best time to book a flight to Heathrow?

The best time to book flights to Heathrow is 38 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

When is the best time to fly to Heathrow Airport?

June is typically the best time to fly to London Heathrow, but there are other times where great deals are available. July sees the temperatures in London Heathrow peak to their warmest. October tends, on average, to see the most amount of rainfall.

Cheap Flights to Heathrow from ฿6,491

Max 3 airports

Economy

Choose up to 3 origin airports

Location

Airports within

100 km

Airport

Drive

Transport

Pop.

Enter a location to see nearby airports

Choose up to 3 airports

Enter a location to see nearby airports

Choose up to 3 destination airports

Location

Airports within

100 km

Airport

Drive

Transport

Pop.

Enter a location to see nearby airports

Choose up to 3 airports

Enter a location to see nearby airports

Choose up to 3 origin airports

Location

Airports within

100 km

Airport

Drive

Transport

Pop.

Enter a location to see nearby airports

Choose up to 3 airports

Enter a location to see nearby airports

Choose up to 3 destination airports

Location

Airports within

100 km

Airport

Drive

Transport

Pop.

Enter a location to see nearby airports

Choose up to 3 airports

Enter a location to see nearby airports

Popular in	December	High demand for flights, 2% potential price rise
Cheapest in	March	Best time to find cheap flights, 1% potential price drop
Average price	฿23,412	Average for round-trip flights in October 2021
Round-trip from	฿14,405	From Bangkok to London Heathrow
One-way from	฿331	One-way flight from Bangkok to London Heathrow (LHR)

TH1 - LON Price	฿20,079 - ฿32,768
LON Temperature	9 - 23 °C
LON Precipitation	35 - 71 mm

Cheap Flights to Heathrow

Flights to Heathrow in 2021

Flight route prices based on searches on Cheapflights within the last 3 days, monthly prices based on aggregated historical data.

Cheap flights to London Heathrow Airport in October, November 2021

The best prices found for LHR flights for October, November

London Heathrow Airport 2021 flight deals

Cheap flights to London Heathrow Airport found for this year

Last minute flights to London Heathrow Airport

Late deals on return flights to London Heathrow Airport, departing today and this week

Cheapest prices for Heathrow flights by month

The cheapest ticket to Heathrow found for each month in 2021 based on historical flight searches by Cheapflights users.

When is the best time to fly to Heathrow Airport?

Average London flight ticket prices and weather conditions for 2021 and 2022 by month.

When is the best time to book a flight to Heathrow?

The best time to book flights to Heathrow is 38 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

Alternative, similarly priced destinations

See alternative destinations where airfare is generally forecast to be close to Heathrow flight prices.

Find the best prices for you!

Cheap tickets to Heathrow found by our users in Thailand as recently as October 27, 2021.

Cheapest flights to United Kingdom

Not set on Heathrow? See the cheapest flights to Thailand. Airfare prices updated on October 27, 2021.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2021.

Find flight deals