How do most travelers feel about Finnair?

The general consensus from 1,469 Cheapflights users is that Finnair is a 7.4/10. 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 £700?

There are 2 flights available on Finnair from London Heathrow Airport to San Diego for under £700. These prices can change based on many factors including date and time. To find LHR-SAN flight prices for your dates, click here.

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.

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).

£432+ Finnair Flights from Heathrow to San Diego

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

One-way from	£432
Return from	£477
Popular in	July
Cheapest in	January
Average price (all airlines)	£488

Finnair
14/12
2 total stops
38h 45m total
London to San Diego

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Finnair
28/10-14/11
4 total stops
66h 03m total
London to San Diego

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Highest demand for flights from London Heathrow to San Diego; 15% 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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Can I get a flight from London Heathrow Airport to San Diego on Finnair for under £700?
There are 2 flights available on Finnair from London Heathrow Airport to San Diego for under £700. These prices can change based on many factors including date and time. To find LHR-SAN flight prices for your dates, click here.
How do most travelers feel about Finnair?
The general consensus from 1,469 Cheapflights users is that Finnair is a 7.4/10. Select your travel dates above for updated prices on flights from London Heathrow Airport to San Diego (LHR-SAN).

Find Finnair flight deals from Heathrow to San Diego

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 16 September 2025.

Mon 22/912:30LHR - SAN

1 stop17h 13mFinnair

Sat 27/913:17SAN - LHR

2 stops33h 03mFinnair

Deal found 14/9£477

Sat 27/909:15LHR - SAN

1 stop18h 36mFinnair

Wed 22/1019:50SAN - LHR

Nonstop10h 30mFinnair

Deal found 14/9£485

Tue 14/1017:00LHR - SAN

2 stops48h 59mFinnair

Sun 19/1022:45SAN - LHR

1 stop27h 35mFinnair

Deal found 14/9£486

Best Finnair flights from Heathrow to San Diego
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 16 September 2025.

Tue 28/1015:35LHR - SAN

2 stops34h 48mFinnair

Fri 14/1115:05SAN - LHR

2 stops31h 15mFinnair

Deal found 14/9£477

Mon 3/1110:05LHR - SAN

1 stop16h 00mFinnair

Mon 17/1110:47SAN - LHR

1 stop13h 48mFinnair

Deal found 14/9£479

Sat 27/909:15LHR - SAN

1 stop18h 36mFinnair

Wed 22/1019:50SAN - LHR

Nonstop10h 30mFinnair

Deal found 14/9£485

Direct Finnair flights from Heathrow to San Diego
Explore direct Finnair flight options from Heathrow to San Diego based on user searches, and compare prices and availability for your desired travel dates. Data last updated 16 September 2025.

Sat 13/1212:50LHR - SAN

Nonstop11h 20mFinnair

Sat 10/118:00SAN - LHR

Nonstop10h 35mFinnair

Deal found 15/9£682

Mon 13/1014:55LHR - SAN

Nonstop11h 05mFinnair

Sun 26/1019:00SAN - LHR

Nonstop10h 35mFinnair

Deal found 14/9£1,026

Sat 20/1212:50LHR - SAN

Nonstop11h 20mFinnair

Sat 3/118:00SAN - LHR

Nonstop10h 35mFinnair

Deal found 14/9£1,314

Last-minute Finnair flights from Heathrow to San Diego
Discover last-minute Finnair flight deals from Heathrow to San Diego. Data last updated 16 September 2025 and is based on user searches.

Mon 22/912:30LHR - SAN

1 stop17h 13mFinnair

Sat 27/913:17SAN - LHR

2 stops33h 03mFinnair

Deal found 14/9£477

Sat 27/909:15LHR - SAN

1 stop18h 36mFinnair

Wed 22/1019:50SAN - LHR

Nonstop10h 30mFinnair

Deal found 14/9£485

Tue 14/1017:00LHR - SAN

2 stops48h 59mFinnair

Sun 19/1022:45SAN - LHR

1 stop27h 35mFinnair

Deal found 14/9£486

One-way Finnair flights to San Diego
Search for one-way Finnair flight options to San Diego. Find affordable one-way fares based on user searches. Data last updated 16 September 2025.

Sun 14/1216:15LHR - SAN

2 stops38h 45mFinnair

Deal found 14/9£432

Thu 9/1014:55LHR - SAN

Nonstop11h 05mFinnair

Deal found 14/9£483

Wed 7/112:50LHR - SAN

Nonstop11h 20mFinnair

Deal found 15/9£497

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.

Prices

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 £369. Conversely, traveling with Finnair from London Heathrow Airport to San Diego in August will be the most expensive, with an average cost of £647. Various factors influence flight prices, so comparing airlines, departure airports, and times can help reduce costs.

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.

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See what others are saying about Finnair

Finnair

7.6

Good

1,323 reviews

Check prices

Overview

Recent reviews

8.0

Very Good|Jul 2025

It was okay

2.0

Poor|Jun 2025

They stranded us in the airport

10.0

Wonderful|May 2025

I was lucky I had a seet without no one next to me My vegetarian meal was excellent. The service very good. Although there was a lot of turbulences during the flight, the landing was very soft and took away all our apprehension.

10.0

Wonderful|May 2025

This is a very short flight. The crew was all very friendly and helpful. The plane was clean and nice. By the time you're in the air, you're starting to descend. It's painless.

6.0

Okay|May 2025

Difficult to say what I liked, cabin crew very miserable, looked like they were sick of the job and it was their 50th flight if the day, long wait between drinks and food was somewhat very budget. We did travel in economy but with such a long flight you'd expect this type of service with Ryanair for a two/three hour flight to benidorm, not 8 hours over the Altantic.. entertainment was limited with films and difficult to hear even with headphones on. I think the pilot spoke once and I couldn't hear him over the noise in the cabin. I'd say to say you get what you pay for but my opinion I've flown with a much better airlines. Sorry...you dud ask :(

1 out of 441

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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 16 September 2025.

One-way from

Return from

Popular in

Cheapest in

Average price (all airlines)

Can I get a flight from London Heathrow Airport to San Diego on Finnair for under £700?

How do most travelers feel about Finnair?

Find Finnair flight deals from Heathrow to San Diego

Cheapest Finnair flights from Heathrow to San DiegoExplore the most affordable Finnair flight options available from Heathrow to San Diego. Find the lowest fares with prices last updated on 16 September 2025.

Explore the most affordable Finnair flight options available from Heathrow to San Diego. Find the lowest fares with prices last updated on 16 September 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.

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

Rainfall in San Diego by month

Temperature in San Diego by month

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.

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 16 September 2025.

See what others are saying about Finnair

Overview

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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 16 September 2025.