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Cheap flights from London to Carlsbad, California from £347

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 30/1. Fares are subject to change and may not be available on all flights or dates of travel.
LON — LAX
6 Feb — 13 Feb1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Carlsbad are usually found in September or February, booked 37 days in advance, depart on a Wednesday or Thursday and return on a Monday

Cheap flight deals from London to Carlsbad

Keep the following information in mind while searching for London to Carlsbad flight deals. Data was last updated 7 January 2026.

Round-trip from

£364

One-way from

£347

Popular in

July

Cheapest in

September

Average price

£444
United Airlines
  • United Airlines
  • 6/4-14/4
  • 2 total stops
  • 28h 30m total
  • London to Carlsbad
Search Deals
30/1
  • 30/1
  • 3 total stops
  • 34h 05m total
  • London to Carlsbad
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£48 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

Find flight deals from London to Carlsbad

Enter your travel dates to find the best prices.

Cheapest flights from London to Carlsbad
Explore the most affordable flight options available from London to Carlsbad. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 7 January 2026.

Mon 6/406:55LHR - LAX
1 stop16h 20mUnited Airlines
Tue 14/416:10LAX - LHR
1 stop12h 10mUnited Airlines
Deal found 6/1£364
Wed 15/409:25LGW - LAX
1 stop15h 05mSWISS
Wed 29/419:35LAX - LGW
1 stop14h 15mSWISS
Deal found 6/1£364
Sat 31/113:25LHR - LAX
1 stop16h 35mUnited Airlines
Sat 14/219:00LAX - LHR
Nonstop10h 30mUnited Airlines
Deal found 6/1£365
Sat 14/313:25LHR - LAX
1 stop15h 35mUnited Airlines
Sun 22/320:00LAX - LHR
Nonstop10h 30mUnited Airlines
Deal found 6/1£366
Fri 23/118:40LGW - LAX
1 stop29h 55mSWISS
Sun 1/219:10LAX - LGW
1 stop14h 40mSWISS
Deal found 6/1£366
Sat 31/120:05LHR - LAX
1 stop28h 30mSWISS
Sun 8/219:10LAX - LHR
2 stops29h 05mSWISS
Deal found 6/1£367
Wed 2/909:40LGW - LAX
Nonstop11h 15mNorse Atlantic UK
Wed 16/916:35LAX - LGW
Nonstop10h 20mNorse Atlantic UK
Deal found 6/1£367
Thu 15/111:35LHR - LAX
1 stop13h 50mUnited Airlines
Wed 28/113:04LAX - LHR
1 stop12h 36mUnited Airlines
Deal found 6/1£367
Thu 15/118:40LGW - LAX
1 stop29h 55mSWISS
Wed 28/119:10LAX - LGW
1 stop14h 40mSWISS
Deal found 6/1£367
Fri 6/209:20LCY - LAX
1 stop15h 15mSWISS
Tue 10/219:10LAX - LCY
1 stop13h 55mSWISS
Deal found 6/1£368
Thu 19/218:40LGW - LAX
1 stop29h 55mSWISS
Thu 26/219:10LAX - LGW
1 stop14h 40mSWISS
Deal found 6/1£368
Fri 27/211:10LHR - LAX
1 stop16h 17mAir Canada
Thu 5/312:50LAX - LHR
1 stop15h 00mAir Canada
Deal found 6/1£369

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Carlsbad that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 7 January 2026.
Use the filters below to find and compare flights from London to Carlsbad that are best for you.

Fly from

London

Fly to

Carlsbad

Route

Depart

Return

Price

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Sat 25/4

12:00-18:25

1 stop14h 25m

Los Angeles

Sat 2/5

20:55-15:25

Nonstop10h 30m

£366

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Fri 1/5

09:55-13:10

Nonstop11h 15m

Los Angeles

Fri 15/5

23:15-17:35

Nonstop10h 20m

£370

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Sat 25/4

07:25-15:15

1 stop15h 50m

Los Angeles

Sat 2/5

07:00-10:00

2 stops19h 00m

£371

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Fri 3/7

09:55-13:10

Nonstop11h 15m

Los Angeles

Mon 20/7

20:35-15:00

Nonstop10h 25m

£375

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Sat 4/4

08:55-18:15

1 stop17h 20m

Los Angeles

Mon 20/4

16:39-14:25

1 stop13h 46m

£376

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Wed 1/4

07:30-17:10

1 stop17h 40m

Los Angeles

Mon 13/4

18:50-20:40

1 stop17h 50m

£378

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Sat 14/3

11:20-15:35

Nonstop11h 15m

Los Angeles

Mon 23/3

17:35-10:55

Nonstop10h 20m

£378

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Sat 14/3

11:20-15:35

Nonstop11h 15m

Los Angeles

Wed 25/3

17:35-10:55

Nonstop10h 20m

£378

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Fri 1/5

20:25-15:15

1 stop26h 50m

Los Angeles

Fri 15/5

05:00-10:00

2 stops21h 00m

£378

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Thu 14/5

17:00-20:20

Nonstop11h 20m

Los Angeles

Fri 29/5

20:55-15:25

Nonstop10h 30m

£381

Flights are sorted by cheapest return flights first.

Deals found on 6/1

Showing 1-10 of 60 results
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Best time to book a flight from London to Carlsbad

Have a flexible travel schedule? Discover the best time to fly to Carlsbad from London 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.

Cheapflights Insights

Everything you need to know about your flight from London to Carlsbad

How far ahead should I book a flight from London to Carlsbad?

Use this chart to determine the optimal time to book a return flight from London to Carlsbad. Price data was last updated on 2 January 2026.

The best time to book flights from London to Carlsbad is 37 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from London to Carlsbad?

Currently, September is the cheapest month in which you can book a flight from London to Carlsbad (average of £237). Flying from London to Carlsbad in July is currently the most expensive (average of £395). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from LON to C4D?

Find hourly flight availability from London to Carlsbad. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 7 January 2026.

When flying from London to Carlsbad, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from London to Carlsbad

Explore weekly flight availability from London to Carlsbad. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 7 January 2026.

The most flights from LON to C4D are scheduled on a Monday (38 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (32 on average).

How much does it cost for a return flight from London to Carlsbad?

Reviews of airlines servicing Carlsbad

Get insights into the airlines that provide service to Carlsbad. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Carlsbad. Reviews last updated 7 January 2026.
Read reviews from past customers who have flown with KLM, Virgin Atlantic, andNorse Atlantic UK from London to Carlsbad. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Food

7.2

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
KLM
7.7
Good
1,434 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Food

7.2

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Food

7.2

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Norse Atlantic UK
7.2
Good
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Food

7.2

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
Lufthansa
6.8
Okay
7,688 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Food

7.2

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle
British Airways
6.7
Okay
7,657 reviews
KLM
7.7
Good
1,434 reviews
Check prices

Crew

8.4

Food

7.2

Boarding

7.8

Entertainment

7.1

Comfort

7.6

Overall

7.7

Reviews

1 / 20
8.0
Excellent

Anonymous,Dec 2025

YYC - AMS

Not literally sitting in the very last row in the middle

Related info for your journey

Find useful and relevant information for your journey from London to Carlsbad. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from London to Carlsbad?

    Airlines like British Airways, Virgin Atlantic, and Iberia fly from London to Carlsbad in about 11h 15m. The time it takes to get you to your destination can typically vary by up to 17h 40m. There are 5439 mi between London and Carlsbad. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • What are the cheapest airlines to fly from London to Carlsbad one-way?

    £162 is the cheapest one-way deal found within the past few days, from Norse Atlantic UK. You may also be able to find cheap deals on TAP AIR PORTUGAL and Scandinavian Airlines, with prices starting from £245 and £248, respectively.

  • What are the most popular routes from London to Carlsbad?

    Most travelers choose London Heathrow - Los Angeles, London Gatwick - Los Angeles or London City - Los Angeles when deciding on the best route from London to Carlsbad.

  • What are the most reliable airlines from London to Carlsbad?

    Consider SriLankan Airlines (97%), Air Canada (93%) or Austrian Airlines (93%) when booking your flight. These represent the most reliable airlines when flying from London to Carlsbad.

  • What are the cheapest flights from London to Carlsbad?

    On average you can expect to pay £2,640 for a flight from London to Carlsbad. The cheapest flight overall is £340 while the most popular route, (London Heathrow - Los Angeles) is currently priced at £283.

  • Can I find deals for flights from London to Carlsbad that include hotel bookings?

    Yes. In addition to deals on London to Carlsbad flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from London to Carlsbad?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from London to Carlsbad.

  • Can I find deals for business class flights from London to Carlsbad?

    Yes. Cheapflights offers flight deals from London to Carlsbad by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from London to Carlsbad?

    Currently, September is the cheapest month in which you can book a flight from London to Carlsbad (average of £237). Flying from London to Carlsbad in July is currently the most expensive (average of £395). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Top 10 airlines flying from London to Carlsbad

Discover the top 10 airlines that operate flights from London to Carlsbad. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 7 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£237Average£530FlexibilityNo cancel feeOn-time77%
Search Iberia flights
SWISSCheapest£275Average£444FlexibilityNo cancel feeOn-time79%
Search SWISS flights
FinnairCheapest£277Average£517FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Norse Atlantic UKCheapest£291Average£514FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Aer LingusCheapest£331Average£1,069FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest£334Average£534FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Scandinavian AirlinesCheapest£336Average£449FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Brussels AirlinesCheapest£355Average£472FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Air FranceCheapest£355Average£476FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£355Average£542FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from London to Carlsbad?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Carlsbad from London today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from London to Carlsbad?

It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from London to Carlsbad.

Can Cheapflights find flights from London to Carlsbad with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from London to Carlsbad, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from London to Carlsbad become cheaper?

Of course! You can now track prices for flights from London to Carlsbad and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.

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