$414 Cheap Flights from San Diego International to Heathrow
One-way
Departing from
San Diego International
Going to
Heathrow
London (LHR)
United Kingdom • April, 2026
51% AI deal score
3%
$403 $418
London (LHR)
United Kingdom • April, 2026
40% AI deal score
2%
$403 $414
Top Cheap Flight Deals from San Diego International to Heathrow
Recent round-trip flight deals to Heathrow
Tue, May 5 - Tue, May 12
Cheapest
San Diego (SAN) - London (LHR)
Lufthansa airlines • 1 stop • Munich (MUC)
London (LHR) - San Diego (SAN)
Lufthansa airlines • 1 stop • Munich (MUC)
$403
$848
+$445
110%
Mon, May 11 - Tue, May 19
San Diego (SAN) - London (LHR)
Lufthansa airlines • 1 stop • Munich (MUC)
London (LHR) - San Diego (SAN)
Lufthansa airlines • 1 stop • Munich (MUC)
$403
$848
+$445
110%
Tue, May 12 - Tue, May 19
San Diego (SAN) - London (LHR)
Lufthansa airlines • 1 stop • Munich (MUC)
London (LHR) - San Diego (SAN)
Lufthansa airlines • 1 stop • Munich (MUC)
$403
$853
+$450
112%
Tue, May 5 - Tue, May 19
San Diego (SAN) - London (LHR)
Lufthansa airlines • 1 stop • Munich (MUC)
London (LHR) - San Diego (SAN)
Lufthansa airlines • 1 stop • Munich (MUC)
$403
$853
+$450
112%
Sun, Apr 19 - Wed, Apr 29
San Diego (SAN) - London (LHR)
United Airlines airlines • 1 stop • Denver (DEN)
London (LHR) - San Diego (SAN)
United Airlines airlines • 1 stop • Munich (MUC)
$403
$877
+$474
118%
Sun, Apr 19 - Wed, Apr 29
San Diego (SAN) - London (LHR)
United Airlines airlines • 1 stop • Houston (IAH)
London (LHR) - San Diego (SAN)
United Airlines airlines • 1 stop • Munich (MUC)
$403
$877
+$474
118%
The cheapest time to fly to Heathrow
Ready to jet to Heathrow on a budget? Check out these popular routes with surprisingly cheap fares (one-way prices):
Last-Minute Flights from San Diego International to Heathrow
Need to get to Heathrow ASAP? Even if you're booking a flight on short notice, there are often last-minute deals available:
Next 2 weeks deals
Last Minute Flight Deals
We found last minute flight deals to London departing in the next two weeks starting from $894.
⌛ Last-Minute
San Diego - LHR
A great last-minute steal for a cross-country flight.
Found 1 day ago
$894
round-trip
Facts About Flights from San Diego International to London
To help you plan your journey, here are some quick London flight facts and tips.
London airports
London's airports offer a wide array of choices for travelers. Heathrow (LHR), the UK's largest airport, is a global hub known for its extensive international connections and high-end services. Gatwick (LGW), located south of London, serves a mix of short-haul and long-haul flights, catering to both leisure and business travelers. Stansted (STN), to the northeast, is a major base for low-cost carriers, offering numerous European routes. Luton (LTN), also north of London, focuses on budget airlines and European destinations. London City (LCY), situated in the heart of London's Docklands, provides convenience for business travelers with its short runway and focus on European business centers. Southend (SEN), further east, offers a smaller, more relaxed environment with a growing number of European routes. Each airport provides different airlines, destinations, and overall travel experiences, allowing passengers to select the best option based on their needs and preferences.
Heathrow (LHR)
London, United Kingdom
Gatwick (LGW)
London, United Kingdom
London Stansted (STN)
London, United Kingdom
Luton (LTN)
London, United Kingdom
London City (LCY)
London, United Kingdom
London Southend (SEN)
London, United Kingdom
Pro tip: search “London (Any)” to see fares to all London airports – sometimes one is cheaper than the others on your dates.
Insights for flights to Heathrow
Cheapest airport
Amsterdam (AMS)
Amsterdam Airport Schiphol (AMS) is a major international airport located near Amsterdam, Netherlands. Known for its single-terminal design, it is easy to navigate and consistently ranked among the best airports in Europe for passenger experience, offering numerous amenities and services.
Nonstop vs. 1-stop
LHR Airport Deal Stats
Current most discounted routes
Avg. most discounted routes (last 3 months)
LHR airport insights
Best days to catch a deal
Tue, Fri
Based on the provided data, Tuesday and Friday appear to be the best days to find cheap flight deals from Heathrow airport. You're more likely to find a bargain on these days compared to others in the week.
Avg. deal survival time
13.4 hours
Deals from Heathrow airport survive on average for 13.4 hours. Therefore, it is important to book quickly to avoid missing out.
Rare deal frequency
19 deals
In the past month, our system identified 19 rare deals for flights departing from London Heathrow Airport. These exceptional deals, which received an AI Deal Score of 90+, typically include mistake fares, special promotions, or ultra-discounts.
Average price drop
-72%
The average price drop for flights to Heathrow Airport is 71.8%, indicating significant potential savings for travelers. This substantial decrease suggests that booking flights strategically could lead to considerable cost reductions for those flying into Heathrow.
Next 4 weeks: deal forecast
Heathrow (LHR) Flight Forecast - Next Month
Based on current trends, flight prices to and from Heathrow Airport are expected to remain stable for the next month. There are no significant price drops or increases anticipated at this time.
Top 5 biggest price drops (last 3 months)
Found on March 31
Monastir - LHR
$708 → $86
88%
Found on March 25
Sitka - LHR
$3,875 → $486
87%
Found on March 30
Labasa - LHR
$7,950 → $1,110
86%
Found on March 30
Basel - LHR
$2,985 → $418
86%
Found on March 25
Andorra la Vella - LHR
$865 → $138
84%
Check these nearby airports too
Looking for more options? These airports near LHR sometimes drop rare deals too:
Gatwick (LGW)
~5 rare deals/month
Luton (LTN)
~6 rare deals/month
London Stansted (STN)
~6 rare deals/month
If you’re flexible with departure cities, it’s worth keeping an eye on nearby airports — especially LGW and LTN for long-haul deal surprises.
When Is the Best Time to Fly from San Diego International to Heathrow
Timing is everything when hunting for cheap flights. Here are data-backed insights on the best times to fly to Heathrow:
Cheapest month
January
Cheapest month
January is typically the cheapest month to fly to London City. You'll find fewer crowds and lower prices on flights and accommodations. While it might be chilly, the city is still bustling with festive cheer from the holidays, offering a unique and budget-friendly experience.
Best day to book
Tuesday
Best day to book
Booking your flight to London City on a Tuesday can often save you some serious cash. Airlines tend to release deals early in the week, so keep your eyes peeled! Plus, fewer people are usually searching for flights on Tuesdays, giving you a better chance to snag a sweet deal.
Cheapest days to fly
Wednesday
Cheapest days to fly
Flying to London City on a Wednesday can be lighter on your wallet. Mid-week flights are generally less popular, which means airlines drop prices to fill those seats. So, if you're flexible with your travel dates, consider making Wednesday your day to jet off to London!
Advance booking sweet spot
2 months
Advance booking sweet spot
To snag the best deals on flights to London City, aim to book around two months in advance. This sweet spot allows you to capitalize on lower fares before they start climbing closer to your travel date. Planning ahead really does pay off, so get those dates locked in!
Heathrow Airports & Ground Transportation
One big question for travelers is which Heathrow airport to fly into. Here’s a quick guide to Heathrow’s airports and how to get to the city from each:
Heathrow Airport (LHR)
Heathrow Airport, London's primary international airport, is a bustling hub located west of the city. As one of the world's busiest airports, it offers an extensive range of amenities, including shops, restaurants, and lounges. Getting to and from central London is a breeze via the Heathrow Express train, which whisks you to Paddington Station in just 15 minutes. Alternatively, the London Underground's Piccadilly line provides a more budget-friendly option, though the journey takes longer. Be prepared for long walks, as the airport can be quite large.
Tip: Navigating Heathrow can be a marathon, so wear comfortable shoes!
Gatwick Airport (LGW)
Gatwick Airport, situated south of London, serves as a major airport for both international and domestic flights. It features two terminals, North and South, offering a variety of shops, restaurants, and services. Reaching central London is convenient via the Gatwick Express train, which runs directly to Victoria Station. Regular trains are also available, providing a slightly slower but more affordable option. Don't forget to factor in extra time, especially during peak travel seasons.
What to Do in London
London isn’t just about getting there – it’s about enjoying the country once you arrive! Here are some top things to do in London, organized by interest:
Sightseeing & landmarks
Get ready to be wowed by London's iconic landmarks! From Buckingham Palace to the Tower of London and the London Eye, you'll be snapping photos left and right. Don't forget to explore historic Westminster Abbey and Big Ben too.
Arts & culture
Immerse yourself in London's vibrant arts scene! Catch a world-class performance in the West End, explore masterpieces at the National Gallery, and wander through the eclectic exhibits at the Tate Modern. Street art in Shoreditch is also a must-see for something different!
Food & nightlife
Prepare your taste buds for a culinary adventure! London's food scene is incredibly diverse, from traditional pubs to Michelin-starred restaurants. As the sun sets, dive into the city's bustling nightlife with trendy bars, live music venues, and exclusive nightclubs.
Shopping & fashion
Shop 'til you drop in London's fashion-forward streets! From luxury boutiques in Mayfair to the quirky stalls of Camden Market, there's something for every style and budget. Don't miss iconic department stores like Harrods and Selfridges for a truly unique shopping experience.
Nearby getaways
Escape the city for a refreshing day trip! Explore the historic Windsor Castle, wander through the charming streets of Oxford, or soak up the coastal vibes in Brighton. These quick getaways offer a perfect contrast to London's bustling energy.
Events in London This Month
easter hunt at vauxhall city farm 2026
Participate in our annual Easter Egg Hunt this Easter! Head to our Community Garden to search for hidden eggs and clues, which you can then exchange for a delicious chocolate egg. Enjoy a fun-filled Easter activity with the whole family.
lush stratford city | easter half-term bath bomb workshop
Join us this Easter half-term at Lush Stratford City and create your very own adorable Munching Bunny bath bomb for only £3.50! This Easter Half-Term, learn how to make bath bombs at Lush Stratford City.
London Weather
Weather in London
Wed, Apr 1
20%
13° 6°
20%
Thu, Apr 2
Frequently Asked Questions About Flights to Heathrow
Pro Tips for Finding Cheap Flights to Heathrow
Finally, to wrap up, here’s a cheat sheet of pro tips that experienced travelers use to save on Heathrow flights:
Be Flexible with Dates: Heathrow doesn't change location, but prices sure do! Flying mid-week or during the off-season can unlock significantly cheaper fares.
Consider Nearby Airports: Don't limit yourself! London is served by several airports. Check prices at Gatwick, Stansted, Luton, and City Airport. You might snag a steal and a scenic train ride!
