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Finnair flights from London Heathrow Airport to San Diego (LHR - SAN)

LHR — SAN
18 Sep — 25 Sep1
1 adult
1 adult, Economy, 0 bags

Find Finnair flight deals from Heathrow to San Diego

Enter your travel dates to find the best prices.

Cheapest Finnair flights from Heathrow to San Diego

Tue 15/908:55 -
1 stop16h 52m
Mon 28/919:40 -
Nonstop10h 40m
Deal found 15/8£655
Sat 19/908:55 -
1 stop16h 52m
Sun 20/919:40 -
Nonstop10h 40m
Deal found 17/8£680
Thu 17/911:00 -
1 stop14h 46m
Wed 30/919:40 -
Nonstop10h 40m
Deal found 15/8£686

  • How do most travelers feel about Finnair?

    The general consensus from 1,427 Cheapflights users is that Finnair is a 7.6/10. Select your travel dates above for updated prices on flights from London Heathrow Airport to San Diego (LHR-SAN).

  • Can I get a flight from London Heathrow Airport to San Diego on Finnair for under £960?

    There are 7 flights available on Finnair from London Heathrow Airport to San Diego for under £960. These prices can change based on many factors including date and time. To find LHR-SAN flight prices for your dates, click here.

Finnair flights from Heathrow to San Diego in 2026

One-way from

£434

Return from

£623

Popular in

August

Cheapest in

February

Average price (all airlines)

£927
Finnair
  • Finnair
  • 8/12
  • Nonstop
  • 11h 25m total
  • London to San Diego
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Finnair
  • Finnair
  • 16/11-6/12
  • 1 total stop
  • 47h 52m total
  • London to San Diego
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Highest demand for flights from London Heathrow to San Diego; 12% potential price increase.
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Best time to find cheap flights from London Heathrow to San Diego; 3% potential price drop.
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Average price for all London Heathrow to San Diego flights (one-way and round-trip).
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Rainfall in San Diego 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

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.
Estimated return price

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Fly from Heathrow to San Diego on another airline

British Airways flights from London Heathrow to San Diego
Virgin Atlantic flights from London Heathrow to San Diego

See what others are saying about Finnair

Finnair
7.6
Good
1,427 reviews
Check prices
Overview

Boarding

7.7

Food

6.7

Crew

8.2

Entertainment

6.9

Comfort

7.5

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