Finnair flights from London Heathrow Airport to San Diego (LHR - SAN)
Cheapflights users flying from London to San Diego on Finnair typically fly into San Diego and depart from London Heathrow. Select your dates above for pricing.
Finnair flights from Heathrow to San Diego in 2025
Find detailed information about Finnair flights from Heathrow to San Diego. Explore the options provided by Finnair to plan your journey from Heathrow to San Diego. Data last updated 30 April 2025.
Find Finnair flight deals from Heathrow to San Diego
Best Finnair flights from Heathrow to San DiegoDiscover carefully curated Finnair flight deals from Heathrow to San Diego that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 April 2025.
Discover carefully curated Finnair flight deals from Heathrow to San Diego that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 30 April 2025.
Travel insights for Finnair flights from Heathrow to San Diego
Get recent, data-driven insights about Finnair flights from Heathrow to San Diego including ideal travel times, pricing trends, and more.
How far ahead should I book a flight from London Heathrow Airport to San Diego with Finnair?
Use this chart to determine the optimal time to book a return flight from Heathrow to San Diego. Price data was last updated on 25 April 2025.
Booking with Finnair 88 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport to San Diego. 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 San Diego with Finnair?
Currently, the most affordable month to book a Finnair flight from London Heathrow Airport to San Diego in September, with an average price of £374. Conversely, traveling with Finnair from London Heathrow Airport to San Diego in July will be the most expensive, with an average cost of £588. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.
Rainfall in San Diego by month
Plan your trip to San Diego by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in San Diego ranges from 0.0 - 58.0 inches per month. February is typically the wettest month, when rainfall can reach 58.0 mm. July is typically the driest time to visit San Diego when rainfall is around 0.0 mm.
Temperature in San Diego by month
Plan your trip to San Diego by taking into account the average temperature totals by month.
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).
Best time to book a flight from Heathrow to San Diego
Have a flexible travel schedule? Discover the best time to fly to San Diego 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.
Other Finnair flights from Heathrow
Browse through other Finnair flights departing from Heathrow. Flight routes are based on user searches made on Cheapflights and were last updated on 30 April 2025.
See what others are saying about Finnair
Read reviews and see what other travellers are saying about their experiences with Finnair. Get insights from real passengers regarding the airline's services, customer satisfaction, and overall travel experience. Use these reviews to inform your decision when choosing Finnair for your next flight. Reviews last updated 30 April 2025.
Overview
Boarding
Food
Entertainment
Comfort
Crew