Currently, the most affordable month to book a Finnair flight from London Heathrow Airport to San Diego in January, with an average price of £582. Conversely, traveling with Finnair from London Heathrow Airport to San Diego in July will be the most expensive, with an average cost of £840. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
January
£459
February
£469
March
£483
April
£507
May
£494
June
£620
July
£663
August
£596
September
£553
October
£562
November
£488
December
£538
SAN Temperature | 14 - 22 °C |
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If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 22.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).
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