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Cheap flights from London Heathrow Airport to Pasadena from £333

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 31/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
10 Apr — 17 Apr1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from London Heathrow to Pasadena are usually found in September or February, booked 56 days in advance, depart on a Wednesday or Thursday and return on a Wednesday

Cheap flight deals from Heathrow to Pasadena

Enter your travel dates to find the best prices.

Cheapest flights from Heathrow to Pasadena
Explore the most affordable flight options available from Heathrow to Pasadena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 11 March 2026.

Sat 4/410:00
LHR
-
LAX
1 stop18h 22m
United Airlines
Tue 21/411:40
LAX
-
LHR
1 stop14h 45m
United Airlines
Deal found 6/3£359
Mon 16/306:00
LHR
-
LAX
1 stop18h 35m
SWISS
Mon 30/319:35
LAX
-
LHR
1 stop14h 15m
SWISS
Deal found 9/3£360
Tue 5/512:00
LHR
-
LAX
1 stop14h 25m
British Airways
Tue 12/520:20
LAX
-
LHR
Nonstop10h 45m
British Airways
Deal found 5/3£363
Tue 9/614:05
LHR
-
LAX
1 stop15h 24m
Air Canada
Tue 16/614:35
LAX
-
LHR
1 stop14h 45m
Air Canada
Deal found 7/3£366
Tue 23/611:25
LHR
-
LAX
1 stop17h 53m
United Airlines
Fri 3/713:10
LAX
-
LHR
1 stop14h 25m
United Airlines
Deal found 7/3£368
Sat 4/413:40
LHR
-
LAX
1 stop18h 04m
United Airlines
Mon 20/407:00
LAX
-
LHR
1 stop17h 30m
United Airlines
Deal found 6/3£369
Mon 30/312:15
LHR
-
LAX
1 stop19h 29m
United Airlines
Mon 6/406:45
LAX
-
LHR
1 stop17h 00m
United Airlines
Deal found 10/3£371
Thu 19/306:35
LHR
-
LAX
1 stop16h 40m
Lufthansa
Wed 1/408:15
LAX
-
LHR
1 stop14h 30m
Lufthansa
Deal found 10/3£378
Wed 18/306:30
LHR
-
LAX
1 stop14h 35m
Multiple Airlines
Sat 18/416:20
LAX
-
LHR
1 stop30h 15m
Multiple Airlines
Deal found 6/3£379
Fri 13/309:00
LHR
-
LAX
1 stop15h 35m
SWISS
Mon 16/320:10
LAX
-
LHR
1 stop14h 40m
SWISS
Deal found 6/3£381
Wed 18/306:00
LHR
-
LAX
1 stop18h 35m
Multiple Airlines
Tue 24/320:00
LAX
-
LHR
Nonstop10h 30m
Multiple Airlines
Deal found 10/3£382

Find flight deals from Heathrow to Pasadena

Keep the following information in mind while searching for Heathrow to Pasadena flight deals. Data was last updated 11 March 2026.

Round-trip from

£359

One-way from

£333

Popular in

December

Cheapest in

September

Average price

£468
United Airlines
  • United Airlines
  • 4/4-21/4
  • 2 total stops
  • 33h 07m total
  • London to Pasadena
Search Deals
Austrian Airlines
  • Austrian Airlines
  • 31/8
  • 1 total stop
  • 25h 35m total
  • London to Pasadena
Search Deals
Highest demand for flights based on searches. 5% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Heathrow 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 11 March 2026.
Use the filters below to find and compare flights from London Heathrow Airport to Pasadena that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Tue 26/5

06:55-15:15

1 stop16h 20m

Los Angeles Los Angeles

Tue 2/6

07:30-07:25

1 stop15h 55m

£398

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 13/4

06:55-15:15

1 stop16h 20m

Los Angeles Los Angeles

Mon 4/5

15:30-10:10

Nonstop10h 40m

£408

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Tue 1/9

09:30-16:20

1 stop14h 50m

Los Angeles Los Angeles

Tue 22/9

11:00-09:40

1 stop14h 40m

£411

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Wed 6/5

12:00-18:25

1 stop14h 25m

Los Angeles Los Angeles

Sun 10/5

20:20-15:05

Nonstop10h 45m

£421

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 6/4

14:25-22:00

1 stop15h 35m

Los Angeles Los Angeles

Tue 21/4

08:00-06:50

1 stop14h 50m

£449
Fastest return journey

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Tue 5/5

15:05-18:20

Nonstop11h 15m

Los Angeles Los Angeles

Wed 13/5

20:55-15:25

Nonstop10h 30m

£452

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Thu 21/5

13:05-16:10

Nonstop11h 05m

Los Angeles Los Angeles

Sun 31/5

23:15-21:35

1 stop14h 20m

£454

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Wed 6/5

13:05-16:15

Nonstop11h 10m

Los Angeles Los Angeles

Sun 10/5

15:30-10:10

Nonstop10h 40m

£455

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Thu 9/4

13:05-16:15

Nonstop11h 10m

Los Angeles Los Angeles

Tue 14/4

08:47-09:40

1 stop16h 53m

£455

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Tue 7/4

14:25-16:30

2 stops34h 05m

Los Angeles Los Angeles

Tue 14/4

19:35-17:50

1 stop14h 15m

£455

Flights are sorted by cheapest return flights first.

Deals found on 9/3

Showing 1-10 of 24 resultsSorted by cheapest first
1
2
3

Best time to book a flight from Heathrow to Pasadena

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

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

Use this chart to determine the optimal time to book a return flight from Heathrow to Pasadena. Price data was last updated on 6 March 2026.

Booking 56 days in advance of your planned departure date is, on average, the best time to get cheap flights from London Heathrow Airport 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 Heathrow Airport to Pasadena?

Currently, December is the cheapest month in which you can book a flight from London Heathrow Airport to Pasadena (average of £330). Flying from London Heathrow Airport to Pasadena in July is currently the most expensive (average of £385). 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 LHR to P4S?

Find hourly flight availability from Heathrow 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 11 March 2026.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from London Heathrow Airport to Pasadena as you normally would.

Weekly flight availability from London Heathrow Airport to Pasadena

Explore weekly flight availability from Heathrow 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 11 March 2026.

The most flights from LHR to P4S are scheduled on a Monday (50 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (44 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 11 March 2026.
Read through reviews of airlines operating flights from London Heathrow Airport to Pasadena, such as KLM,Virgin Atlantic, andAir France. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,469 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Food

7.3

Overall

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,469 reviews
KLM
7.8
Good
1,469 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Food

7.3

Overall

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Virgin Atlantic
7.5
Good
680 reviews
KLM
7.8
Good
1,469 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Food

7.3

Overall

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Air France
7.4
Good
1,543 reviews
KLM
7.8
Good
1,469 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Food

7.3

Overall

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Lufthansa
6.8
Okay
7,843 reviews
KLM
7.8
Good
1,469 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Food

7.3

Overall

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
British Airways
6.7
Okay
7,781 reviews
KLM
7.8
Good
1,469 reviews
Check prices

Comfort

7.6

Boarding

7.8

Entertainment

7.1

Food

7.3

Overall

7.8

Crew

8.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

Related info for your journey

Find useful and relevant information for your journey from Heathrow 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 Heathrow Airport to Pasadena?

    A quick flight from London Heathrow Airport to Pasadena can take about 14h 25m. United Airlines provides one of the quickest options available for as low as £421. London Heathrow Airport 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 Heathrow Airport to Pasadena one-way?

    £164 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 WestJet and TAP AIR PORTUGAL, with prices starting from £170 and £244, respectively.

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

    Before booking your flight to Pasadena from London Heathrow Airport, check out the most reliable airlines to get you to your destination on time: SriLankan Airlines (90%), Air Canada (88%), Austrian Airlines( 88%).

  • What are the cheapest flights from London Heathrow Airport to Pasadena?

    While on average a flight from London Heathrow Airport to Pasadena is generally £2,708, our data shows the cheapest flight currently is £353. When looking at the most popular route, (London Heathrow - Los Angeles Los Angeles), you can expect to pay £305 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Heathrow 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 Heathrow Airport to Pasadena?

    Currently, December is the cheapest month in which you can book a flight from London Heathrow Airport to Pasadena (average of £330). Flying from London Heathrow Airport to Pasadena in July is currently the most expensive (average of £385). 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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Alternative routes for Heathrow to Pasadena

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Heathrow to Pasadena

Discover the top 10 airlines that operate flights from Heathrow 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 11 March 2026.
AirlineCheapestAverageFlexibilityOn-time
Norse Atlantic UKCheapest£270Average£547FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
SWISSCheapest£277Average£397FlexibilityNo cancel feeOn-time79%
Search SWISS flights
DeltaCheapest£308Average£528FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Brussels AirlinesCheapest£333Average£453FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Aer LingusCheapest£333Average£479FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Scandinavian AirlinesCheapest£339Average£462FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Austrian AirlinesCheapest£350Average£478FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
TAP AIR PORTUGALCheapest£352Average£479FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights
KLMCheapest£353Average£526FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£354Average£506FlexibilityNo cancel feeOn-time77%
Search Air France 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 Heathrow to Pasadena?

When you search for this flight from Heathrow to Pasadena, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Cheapflights helps you find that perfect flight to Pasadena from Heathrow by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

Yes! Cheapflights helps users easily find flights from Heathrow to Pasadena with no change fees.

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

Yes! Start tracking prices for Heathrow to Pasadena flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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