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Finnair flights from London to San Diego (LON - SAN)

LON — SAN
19 Jan — 26 Jan1
1 adult
1 adult, Economy, 0 bags

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 London to San Diego in 2025

Find detailed information about Finnair flights from London to San Diego. Explore the options provided by Finnair to plan your journey from London to San Diego. Data last updated 20 December 2025.

One-way from

£362

Return from

£654

Popular in

December

Cheapest in

February

Average price (all airlines)

£785
Finnair
  • Finnair
  • 3/3
  • Nonstop
  • 11h 20m total
  • London to San Diego
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Finnair
  • Finnair
  • 6/1-12/1
  • 4 total stops
  • 69h 42m total
  • London to San Diego
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Highest demand for flights from London to San Diego; 4% potential price increase.
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Best time to find cheap flights from London to San Diego; 3% potential price drop.
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Average price for all London to San Diego flights (one-way and round-trip).
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  • Can I get a flight from London to San Diego on Finnair for under £822?

    There are 8 flights available on Finnair from London to San Diego for under £822. These prices can change based on many factors including date and time. To find LON-SAN flight prices for your dates, click here.

  • How do most travelers feel about Finnair?

    The average rating from 1,339 Finnair reviews by Cheapflights users is 7.6 (out of a maximum rating of 10). If you are considering flying LON-SAN with Cheapflights, apply your desired dates to the form above to see our best pricing for your trip to San Diego with Finnair.

Find Finnair flight deals from London to San Diego

Enter your travel dates to find the best prices.

Cheapest Finnair flights from London to San Diego
Explore the most affordable Finnair flight options available from London to San Diego. Find the lowest fares with prices last updated on 20 December 2025.

Tue 6/117:00LHR - SAN
2 stops47h 32mFinnair
Mon 12/116:00SAN - LHR
2 stops22h 10mFinnair
Deal found 19/12£654
Mon 19/112:50LHR - SAN
Nonstop11h 20mFinnair
Mon 26/118:00SAN - LHR
Nonstop10h 35mFinnair
Deal found 20/12£1,928
Tue 13/112:50LHR - SAN
Nonstop11h 20mFinnair
Thu 22/118:00SAN - LHR
Nonstop10h 35mFinnair
Deal found 19/12£2,089

Travel insights for Finnair flights from London to San Diego

Get recent, data-driven insights about Finnair flights from London to San Diego including ideal travel times, pricing trends, and more.

What is the cheapest month to book a flight from London to San Diego with Finnair?

Currently, the most affordable month to book a Finnair flight from London to San Diego in September, with an average price of £375. Conversely, traveling with Finnair from London to San Diego in August will be the most expensive, with an average cost of £657. 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 London to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from London with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Browse thousands of different options on Cheapflights for your next trip

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Fly from London to San Diego on another airline

Consider alternative airlines that service the San Diego area. Flight routes are based on user searches made on Cheapflights and were last updated on 20 December 2025.
British Airways flights from London to San Diego
Virgin Atlantic flights from London to San Diego

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 20 December 2025.
Finnair
7.6
Good
1,339 reviews
Check prices
Overview

Comfort

7.4

Food

6.7

Boarding

7.6

Entertainment

6.9

Crew

8.1

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