$1,124 Cheap Finnair flights London (LHR) to San Diego (SAN)

Landing cheap one-way Finnair flights from LHR to SAN from $1,124 on Expedia is simple — just filter by “Price (lowest to highest).” Alternatively, check out our affordable return fares from $675 for your next getaway.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

Browse for one-way or return flights to San Diego in January or November. You could find an affordable fare with Finnair during these off-peak months.

Getting the best Finnair deals from LHR to SAN often comes down to timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. Better still, you can pocket 17% on average by buying your tickets on a Sunday compared to a Friday, which is usually the most expensive day to book.* It’s a good idea to start checking out flights about one month before you want to travel.*Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Enter your dates, hit search and check the “Nonstop” filter on Expedia to find any direct flights from LHR to SAN with Finnair or other airlines.

To find the earliest departures from LHR to SAN with Finnair, filter your results by “Morning” and “Early Morning.” Choosing an early flight generally means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

San Diego Intl. Airport (SAN) is the primary San Diego hub for Finnair flights from Heathrow Airport (LHR).

On a standard economy flight with Finnair from LHR to SAN, you can bring 1 checked-in bag up to 50 lb with dimensions not exceeding 62 inches in total. For hand luggage, you can have 1 cabin bag weighing up to 22 lb and measuring no more than 9 inches x 15 inches x 15 inches. Weight and size allowances can vary depending on your cabin class and airfare type. To make sure you’re not hit with extra charges at the airport, double-check your Finnair booking or visit the airline’s website before loading up your suitcase.

Taking off from LHR to SAN with Finnair comes with a variety of perks, including a rewarding loyalty program and a 4-star airline rating. Plus, when booking through Expedia, One Key™ members can earn OneKeyCash™* to spend on select future travel purchases. That’s on top of the Finnair Plus points you can earn with Finnair.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee is typically charged if you change or cancel your booking more than 24 hours after confirmation. To secure tickets with more flexibility, select our “No cancel fee” or “Changes included” filter when you search for flights. For additional information on changing or canceling your reservation, visit “Trips,” select your flight and click on “Manage Booking.”