Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from London to Pasadena from £345

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 24/5. Fares are subject to change and may not be available on all flights or dates of travel.
LON — LAX
15 2月 — 22 2月1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London to Pasadena 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 Pasadena

Keep the following information in mind while searching for London to Pasadena flight deals. Data was last updated 16 1月 2026.

Round-trip from

£360

One-way from

£345

Popular in

December

Cheapest in

September

Average price

£445
SWISS
  • SWISS
  • 23/3-2/4
  • 1 total stop
  • 40h 35m total
  • London to Pasadena
Search Deals
SWISS
  • SWISS
  • 24/5
  • 1 total stop
  • 28h 25m total
  • London to Pasadena
Search Deals
Highest demand for flights based on searches. 3% potential increase in price (£14 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 Pasadena

Enter your travel dates to find the best prices.

Cheapest flights from London to Pasadena
Explore the most affordable flight options available from London to Pasadena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 16 1月 2026.

週一 23/318:40
LHR
-
LAX
1 stop29h 55m
SWISS
週四 2/415:30
LAX
-
LHR
Nonstop10h 40m
SWISS
Deal found 15/1£360
週三 30/909:15
LGW
-
LAX
2 stops19h 31m
SWISS
週日 4/1019:35
LAX
-
LGW
1 stop28h 45m
SWISS
Deal found 15/1£360
週五 23/117:20
LHR
-
LAX
Nonstop11h 20m
Virgin Atlantic
週一 26/116:35
LAX
-
LHR
Nonstop10h 20m
Virgin Atlantic
Deal found 15/1£361
週三 28/117:40
LCY
-
LAX
1 stop30h 55m
SWISS
週日 8/219:10
LAX
-
LCY
1 stop14h 00m
SWISS
Deal found 14/1£362
週五 13/306:30
LHR
-
LAX
2 stops19h 15m
United Airlines
週六 21/321:34
LAX
-
LHR
1 stop26h 51m
United Airlines
Deal found 14/1£362
週三 4/209:20
LCY
-
LAX
1 stop15h 15m
SWISS
週三 11/219:10
LAX
-
LCY
1 stop13h 55m
SWISS
Deal found 14/1£362
週四 19/312:10
LHR
-
LAX
1 stop14h 20m
British Airways
週一 6/415:45
LAX
-
LHR
Nonstop10h 30m
British Airways
Deal found 14/1£362
週一 13/412:20
LGW
-
LAX
2 stops19h 51m
Finnair
週二 21/409:00
LAX
-
LGW
2 stops39h 40m
Finnair
Deal found 14/1£362
週五 13/309:00
LHR
-
LAX
1 stop15h 35m
SWISS
週一 23/320:10
LAX
-
LHR
2 stops18h 15m
SWISS
Deal found 15/1£363
週四 22/118:40
LGW
-
LAX
1 stop29h 55m
SWISS
週六 7/219:10
LAX
-
LGW
1 stop14h 40m
SWISS
Deal found 15/1£363
週四 26/209:15
LCY
-
LAX
1 stop15h 20m
SWISS
週二 10/320:10
LAX
-
LCY
1 stop13h 55m
SWISS
Deal found 14/1£364
週一 9/206:00
LHR
-
LAX
1 stop18h 35m
SWISS
週一 23/320:10
LAX
-
LHR
2 stops18h 15m
SWISS
Deal found 13/1£364

Cheapflights Fare Finder

 
Customise your flight search to find flights from London to Pasadena 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 16 1月 2026.
Use the filters below to find and compare flights from London to Pasadena that are best for you.

Fly from

London

Fly to

Pasadena

Route

Depart

Return

Price

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

週日 15/2

10:05-17:48

1 stop15h 43m

Los Angeles

週日 22/2

19:10-08:05

1 stop28h 55m

£363

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

週三 11/2

14:25-16:35

2 stops34h 10m

Los Angeles

週三 18/2

19:10-17:50

1 stop14h 40m

£364

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

週六 21/2

11:50-15:20

Nonstop11h 30m

Los Angeles

週五 27/2

21:00-15:30

Nonstop10h 30m

£365

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

週四 12/2

16:55-20:25

Nonstop11h 30m

Los Angeles

週一 16/2

19:20-14:00

Nonstop10h 40m

£365

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

週四 12/2

15:20-18:45

Nonstop11h 25m

Los Angeles

週五 20/2

19:00-13:30

Nonstop10h 30m

£366

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

週六 31/1

15:20-18:45

Nonstop11h 25m

Los Angeles

週二 10/2

08:33-05:55

1 stop13h 22m

£366

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

週一 16/2

15:20-18:45

Nonstop11h 25m

Los Angeles

週一 23/2

07:00-05:55

1 stop14h 55m

£366

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

週五 6/2

15:20-18:45

Nonstop11h 25m

Los Angeles

週一 16/2

19:00-13:30

Nonstop10h 30m

£366

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

週四 12/2

15:20-18:45

Nonstop11h 25m

Los Angeles

週一 23/2

19:00-13:30

Nonstop10h 30m

£366

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

週三 15/4

12:00-18:25

1 stop14h 25m

Los Angeles

週二 21/4

18:05-12:45

Nonstop10h 40m

£368

Flights are sorted by cheapest return flights first.

Deals found on 15/1

Showing 1-10 of 60 results
1
2
3
...
6

Best time to book a flight from London to Pasadena

Have a flexible travel schedule? Discover the best time to fly to Pasadena 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 Pasadena

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

Use this chart to determine the optimal time to book a return flight from London to Pasadena. Price data was last updated on 9 January 2026.

Booking 37 days in advance of your planned departure date is, on average, the best time to get cheap flights from London to Pasadena. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

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

Currently, September is the cheapest month in which you can book a flight from London to Pasadena (average of £239). Flying from London to Pasadena in July is currently the most expensive (average of £396). 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 P4S?

Find hourly flight availability from London to Pasadena. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 16 1月 2026.

When flying from London to Pasadena, 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 Pasadena

Explore weekly flight availability from London to Pasadena. 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 16 1月 2026.

The most flights from LON to P4S are scheduled on a Saturday (48 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (42 on average).

Reviews of airlines servicing Pasadena

Get insights into the airlines that provide service to Pasadena. 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 Pasadena. Reviews last updated 16 1月 2026.
Check out reviews from past customers who have flown with KLM, Virgin Atlantic, andNorse Atlantic UK from London to Pasadena to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,440 reviews
Check prices

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
KLM
7.7
Good
1,440 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Virgin Atlantic
7.5
Good
678 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Norse Atlantic UK
7.2
Good
KLM
7.7
Good
1,440 reviews
Check prices

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
Lufthansa
6.8
Okay
7,718 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.
British Airways
6.7
Okay
7,680 reviews
KLM
7.7
Good
1,440 reviews
Check prices

Food

7.2

Entertainment

7.1

Crew

8.4

Overall

7.7

Boarding

7.8

Comfort

7.6

Reviews

1 / 20
10.0
Excellent

Snapyou,Jan 2026

TPA - LHR

Flight operated by Virgin Atlantic - usual high standard service by Virgin.

Related info for your journey

Find useful and relevant information for your journey from London to Pasadena. 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 Pasadena?

    SWISS, British Airways, and United Airlines can get you from London to Pasadena in just under 11h 25m. Your travel time can differ by up to 22h 45m. London and Pasadena are separated by a distance of 5439 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    One-way options have recently been found by users for as low as £164 on Norse Atlantic UK. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £247 and Scandinavian Airlines from £251 one-way.

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

    When deciding which route to take from London to Pasadena consider London Heathrow - Los Angeles, London Gatwick - Los Angeles or London City - Los Angeles as they are the most popular.

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

    Before booking your flight to Pasadena from London, check out the most reliable airlines to get you to your destination on time: SriLankan Airlines (94%), Air Canada (88%), Austrian Airlines( 88%).

  • What are the cheapest flights from London to Pasadena?

    On average you can expect to pay £2,662 for a flight from London to Pasadena. The cheapest flight overall is £343 while the most popular route, (London Heathrow - Los Angeles) is currently priced at £294.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from London to Pasadena 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 Pasadena?

    Currently, September is the cheapest month in which you can book a flight from London to Pasadena (average of £239). Flying from London to Pasadena in July is currently the most expensive (average of £396). 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

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.

Alternative routes for London to Pasadena

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Los Angeles flights
Heathrow to Las Vegas flights
Heathrow to San Francisco flights
Gatwick to Los Angeles flights
London City to Los Angeles flights
Stansted to Los Angeles flights
Gatwick to Las Vegas flights
London City to Las Vegas flights
Heathrow to Ontario flights
Gatwick to San Francisco flights
Luton to Los Angeles flights
Stansted to Las Vegas flights
London City to San Francisco flights
Heathrow to Santa Ana flights
Stansted to San Francisco flights
Heathrow to San Diego flights
Manchester to Las Vegas flights
Heathrow to San Jose flights
Manchester to Los Angeles flights
Birmingham to Las Vegas flights
Luton to Las Vegas flights
Gatwick to Burbank flights
Gatwick to San Diego flights
Luton to San Francisco flights
London City to San Diego flights
Heathrow to Oakland flights
Heathrow to Burbank flights
Manchester to San Francisco flights
Gatwick to San Jose flights
Manchester to Ontario flights
Stansted to San Diego flights
Edinburgh to San Francisco flights
Newcastle upon Tyne to Las Vegas flights
Birmingham to Los Angeles flights
Leeds to Las Vegas flights
Leeds to Los Angeles flights
Edinburgh to Los Angeles flights
Gatwick to Oakland flights
Gatwick to Ontario flights
Birmingham to San Francisco flights
Manchester to Santa Ana flights
Heathrow to Long Beach flights
Heathrow to Sacramento flights
Manchester to San Jose flights
Edinburgh to Las Vegas flights
Edinburgh to Ontario flights
Manchester to San Diego flights
Gatwick to Santa Ana flights
Leeds to San Francisco flights
Gatwick to Sacramento flights

Top 10 airlines flying from London to Pasadena

Discover the top 10 airlines that operate flights from London to Pasadena. 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 16 1月 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£239Average£492FlexibilityNo cancel feeOn-time77%
Search Iberia flights
SWISSCheapest£278Average£490FlexibilityNo cancel feeOn-time79%
Search SWISS flights
FinnairCheapest£280Average£474FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Norse Atlantic UKCheapest£283Average£515FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Aer LingusCheapest£334Average£497FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest£337Average£534FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Scandinavian AirlinesCheapest£338Average£450FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air FranceCheapest£357Average£493FlexibilityNo cancel feeOn-time77%
Search Air France flights
KLMCheapest£358Average£523FlexibilityNo cancel feeOn-time75%
Search KLM flights
Brussels AirlinesCheapest£358Average£485FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines 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 Pasadena?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from London to Pasadena. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

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

Cheapflights simply makes it quick and affordable to book flights from London to Pasadena by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

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

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

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

Yes, Cheapflights offers price alerts on London to Pasadena flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.