Cheap Flights from London (LHR) to Carlsbad (CLD)

View AU$1,205 flight on Sun, 21 June 2026Opens in a new window

Popular airlines from Heathrow Airport (LHR) to Carlsbad, CA (CLD-McClellan-Palomar)

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Cheap Flights from London (LHR) to Carlsbad (CLD)

Prices were available within the past 7 days for one-way flights and round trip tickets for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Mon, 7 Sept - Sun, 13 Sept
LHR
London
CLD
Carlsbad
AU$2,402 Return, found 6 days ago
AU$2,402
Return
found 6 days ago
Select American Airlines flight, departing Mon, 7 Sept from London to Carlsbad, returning Sun, 13 Sept, priced at AU$2,402 found 6 days ago
United
Tue, 12 May - Tue, 19 May
LHR
London
CLD
Carlsbad
AU$2,792 Return, found 1 day ago
AU$2,792
Return
found 1 day ago
Select United flight, departing Tue, 12 May from London to Carlsbad, returning Tue, 19 May, priced at AU$2,792 found 1 day ago
American Airlines
Wed, 12 Aug - Wed, 26 Aug
LHR
London
CLD
Carlsbad
AU$3,157 Return, found 1 day ago
AU$3,157
Return
found 1 day ago
Select American Airlines flight, departing Wed, 12 Aug from London to Carlsbad, returning Wed, 26 Aug, priced at AU$3,157 found 1 day ago
American Airlines
Mon, 3 Aug - Mon, 17 Aug
LHR
London
CLD
Carlsbad
AU$3,254 Return, found 1 day ago
AU$3,254
Return
found 1 day ago
Select American Airlines flight, departing Mon, 3 Aug from London to Carlsbad, returning Mon, 17 Aug, priced at AU$3,254 found 1 day ago
American Airlines
Mon, 3 Aug - Mon, 17 Aug
LHR
London
CLD
Carlsbad
AU$3,399 Return, found 1 day ago
AU$3,399
Return
found 1 day ago
Select American Airlines flight, departing Mon, 3 Aug from London to Carlsbad, returning Mon, 17 Aug, priced at AU$3,399 found 1 day ago
American Airlines
Thu, 4 June - Thu, 11 June
LHR
London
CLD
Carlsbad
AU$3,408 Return, found 1 day ago
AU$3,408
Return
found 1 day ago
Select American Airlines flight, departing Thu, 4 June from London to Carlsbad, returning Thu, 11 June, priced at AU$3,408 found 1 day ago
American Airlines
Fri, 22 May - Sun, 31 May
LHR
London
CLD
Carlsbad
AU$3,615 Return, found 6 days ago
AU$3,615
Return
found 6 days ago
Select American Airlines flight, departing Fri, 22 May from London to Carlsbad, returning Sun, 31 May, priced at AU$3,615 found 6 days ago

Frequently asked questions

How do I find cheap flights from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar)?
To find a cheap flight from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar)?
The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.
How many flights per day from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar)?
There are approximately 15 connecting flights per day from London (LHR-Heathrow) (LHR) to Carlsbad, CA (CLD-McClellan-Palomar) (CLD). Some common connection points include Sky Harbor International (PHX), Denver International (DEN), and O'Hare International (ORD).
What is the earliest flight from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar)?
The earliest flight from London Heathrow (LHR) to Carlsbad, CA (CLD-McClellan-Palomar) typically departs at approximately 7:40 AM local time. This service is operated by EI and UA. This is a seasonal service active in June. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar)?
You'll typically find the most flights from London Heathrow (LHR) to Carlsbad, CA (CLD-McClellan-Palomar) on a Monday, with around 40 flights available. This gives you a good selection for your travel plans. Major airlines on this route include United Airlines, Air Canada, and British Airways.
What are the most popular departure times for flights from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar)?
The most popular departure times for flights from London Heathrow (LHR) to Carlsbad, CA (CLD-McClellan-Palomar) are in the afternoon, from 3pm to 6pm. Around 36% of passengers reckon this time window's best. Heaps of major carriers, including British Airways and United Airlines, offer flights during this window. This timing works well because it allows you to have a productive morning before your flight, and you'll arrive in Carlsbad, CA in the evening.
How long does it take to fly from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar)?
A flight from LHR to CLD with a layover takes around 15 hours 30 minutes, with the route covering approximately 5,454 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar)?
Select the "Business class" and "First class" filters when looking for LHR to CLD flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar) flight with Expedia?
It's easy to earn miles on a London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Carlsbad from Heathrow (LHR)?
From Heathrow (LHR), you can fly directly into McClellan-Palomar (CLD) to reach Carlsbad. Some flights may connect through major hubs like George Bush Intercontinental (IAH), Portland Intl. (PDX), Miami Intl. (MIA) before reaching Carlsbad. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar) at the last minute?
Typically, booking a last minute flight from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar) flight and hotel package?
Securing a London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar)?
If you booked your London (LHR-Heathrow) to Carlsbad, CA (CLD-McClellan-Palomar) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Heathrow
Destination airport
McClellan-Palomar
Airlines serving
American Airlines, United
Return price
AU$2,401
Distance
8724 km

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Your quick guide to flights from London to Carlsbad

Pick up great flights from London to Carlsbad

With Expedia, you have your pick of flights a day with 20 airlines covering flights from London to Carlsbad. Whether you’re on a business trip, a family holiday or a luxury break, just enter your travel dates, hit search then check out your choice of flights. Select from return, one way or multi-city flights, and use the advance search tool if you want a direct or refundable flight. You can narrow your search to show you just your preferred cabin class and airline, too. It’s all easy. You can book direct flights from London to Carlsbad that take around hours.

Find cheap flights from London to Carlsbad

From the great flight deals with prices currently ranging from AU$2,402 to AU$3,615, you can choose to see the cheapest flights first. Generally, you can book the cheapest flights from London to Carlsbad around 4 to 6 weeks in advance. If your travel dates are flexible, try to avoid weekends and peak seasons – when you are more likely to grab the lowest prices. Even last minute, there are some impressive deals. The cheapest time to fly to Carlsbad is normally in September.

Reasons to book your flight from London to Carlsbad with Expedia

Expedia makes it easy to find, book, and travel, with everything you need all in one place. When you enter your travel details, find fantastic deals just for you on flight tickets from London to Carlsbad across all the main airline carriers, so you can save time, dollars, and hassle finding the perfect flight. If you think your plans could change, choose refundable flights so any changes won’t cost you more. Book your flight to Carlsbad right now and, if you join Expedia Rewards, you earn points this time and every time you travel with Expedia.

Your quick guide to flights from London to Carlsbad

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