Currently, the most affordable month to book a Finnair flight from Bangkok Suvarnabhumi Airport to London Heathrow Airport in February, with an average price of ฿22,583. Conversely, traveling with Finnair from Bangkok Suvarnabhumi Airport to London Heathrow Airport in January will be the most expensive, with an average cost of ฿39,571. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.
If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).
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