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

LHR — SAN
20 Jul — 27 Jul1
1 adult
1 adult, Economy, 0 bags

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Cheapest Finnair flights from Heathrow to San Diego
Explore the most affordable Finnair flight options available from Heathrow to San Diego. Find the lowest fares with prices last updated on 20 June 2026.

Sat 27/614:25
LHR
-
SAN
1 stop16h 14m
Finnair
Sat 11/716:45
SAN
-
LHR
Nonstop10h 45m
Finnair
Deal found 15/6£718
Thu 9/714:45
LHR
-
SAN
1 stop16h 41m
Finnair
Wed 15/719:40
SAN
-
LHR
Nonstop10h 40m
Finnair
Deal found 18/6£723
Mon 29/609:45
LHR
-
SAN
1 stop22h 03m
Finnair
Sat 4/713:07
SAN
-
LHR
1 stop34h 58m
Finnair
Deal found 17/6£755

  • How do most travelers feel about Finnair?

    The general consensus from 1,413 Cheapflights users is that Finnair is a 7.7/10. 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 £681?

    There are 4 flights available on Finnair from London Heathrow Airport to San Diego for under £681. 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

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 20 June 2026.

One-way from

£474

Return from

£695

Popular in

July

Cheapest in

February

Average price (all airlines)

£672
Finnair
  • Finnair
  • 3/9
  • Nonstop
  • 11h 20m total
  • London to San Diego
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Finnair
  • Finnair
  • 28/8-5/9
  • Nonstop
  • 22h 00m total
  • London to San Diego
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Highest demand for flights from London Heathrow to San Diego; 7% potential price increase.
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Best time to find cheap flights from London Heathrow to San Diego; 1% 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

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.
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 Heathrow 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 June 2026.
British Airways flights from London Heathrow 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 June 2026.
Finnair
7.7
Good
1,413 reviews
Check prices
Overview

Boarding

7.7

Crew

8.2

Food

6.7

Comfort

7.4

Entertainment

6.9

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