Currently, the most affordable month to book a Finnair flight from London to Boston in November, with an average price of £500. Conversely, traveling with Finnair from London to Boston in July will be the most expensive, with an average cost of £693. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
January
£416
February
£413
March
£405
April
£424
May
£433
June
£525
July
£555
August
£488
September
£446
October
£428
November
£400
December
£403
BOS Temperature | -1 - 23 °C |
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If weather is an important factor for your trip to Boston, 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 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around -1.0 C).
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