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Cheap flights from London Heathrow Airport to Pasadena from £336

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 7/1. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
14 Dec — 21 Dec1
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 7 days in advance, depart on a Wednesday or Tuesday and return on a Monday

Cheap flight deals from Heathrow to Pasadena

Keep the following information in mind while searching for Heathrow to Pasadena flight deals. Data was last updated 14 November 2025.

Round-trip from

£385

One-way from

£336

Popular in

July

Cheapest in

September

Average price

£487
Virgin Atlantic
  • Virgin Atlantic
  • 13/4-21/4
  • 1 total stop
  • 23h 45m total
  • London to Pasadena
Search Deals
Austrian Airlines
  • Austrian Airlines
  • 7/1
  • 1 total stop
  • 33h 09m total
  • London to Pasadena
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£59 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£9 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Find 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 14 November 2025.

Thu 11/1206:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Thu 12/216:45LAX - LHR
1 stop16h 45mTAP AIR PORTUGAL
Deal found 12/11£392
Sat 6/1206:00LHR - LAX
1 stop17h 00mTAP AIR PORTUGAL
Thu 11/1216:45LAX - LHR
1 stop16h 45mTAP AIR PORTUGAL
Deal found 11/11£394
Sat 6/1206:00LHR - LAX
1 stop17h 00mTAP AIR PORTUGAL
Tue 9/1216:45LAX - LHR
1 stop16h 45mTAP AIR PORTUGAL
Deal found 12/11£406
Thu 11/1206:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Sat 14/216:45LAX - LHR
1 stop18h 10mTAP AIR PORTUGAL
Deal found 12/11£410
Thu 4/1206:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Thu 11/1216:45LAX - LHR
1 stop21h 55mTAP AIR PORTUGAL
Deal found 13/11£416
Wed 26/1106:40LHR - LAX
1 stop18h 20mScandinavian Airlines
Wed 3/1219:30LAX - LHR
1 stop14h 10mScandinavian Airlines
Deal found 11/11£418
Wed 3/1218:30LHR - LAX
1 stop28h 10mTAP AIR PORTUGAL
Tue 9/1216:45LAX - LHR
1 stop20h 50mTAP AIR PORTUGAL
Deal found 12/11£419
Wed 3/1213:40LHR - LAX
1 stop33h 00mTAP AIR PORTUGAL
Thu 11/1216:45LAX - LHR
1 stop21h 55mTAP AIR PORTUGAL
Deal found 11/11£421
Tue 9/1206:00LHR - LAX
1 stop17h 00mTAP AIR PORTUGAL
Thu 22/116:45LAX - LHR
1 stop20h 50mTAP AIR PORTUGAL
Deal found 11/11£423
Thu 11/1206:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Tue 6/116:45LAX - LHR
1 stop34h 40mTAP AIR PORTUGAL
Deal found 12/11£423

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 14 November 2025.
Use the filters below to find and compare flights from London Heathrow Airport to Pasadena that are best for you.

Fly from

Heathrow

Fly to

Pasadena

Route

Depart

Return

Price

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 2/2

10:20-17:00

1 stop14h 40m

Los Angeles

Mon 16/2

19:30-21:40

1 stop18h 10m

£435

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Sat 11/4

10:50-14:05

Nonstop11h 15m

Los Angeles

Thu 16/4

09:15-08:50

1 stop15h 35m

£438

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 2/2

09:00-16:35

1 stop15h 35m

Los Angeles

Wed 11/2

13:38-12:00

1 stop14h 22m

£467

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Sat 21/2

10:20-17:00

1 stop14h 40m

Los Angeles

Sun 1/3

19:30-21:35

2 stops18h 05m

£468

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Sun 7/12

06:40-17:00

2 stops18h 20m

Los Angeles

Sat 17/1

19:30-21:35

2 stops18h 05m

£469

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Sat 14/2

12:30-23:55

1 stop19h 25m

Los Angeles

Fri 20/2

13:25-10:00

1 stop12h 35m

£474

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Fri 27/3

13:00-22:42

1 stop16h 42m

Los Angeles

Mon 30/3

13:15-09:50

1 stop12h 35m

£476

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Wed 26/11

09:00-16:35

1 stop15h 35m

Los Angeles

Mon 8/12

19:00-13:30

Nonstop10h 30m

£480

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 6/4

09:20-17:23

1 stop16h 03m

Los Angeles

Sat 25/4

19:35-14:00

Nonstop10h 25m

£482

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 22/12

11:05-20:55

1 stop17h 50m

Los Angeles

Wed 7/1

20:10-16:50

1 stop12h 40m

£489

Flights are sorted by cheapest return flights first.

Deals found on 12/11

Showing 1-10 of 23 results
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 7 November 2025.

Booking 7 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 £346). Flying from London Heathrow Airport to Pasadena in July is currently the most expensive (average of £420). 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 14 November 2025.

One of the essential ways to save on airfare from London Heathrow Airport to Pasadena is to remain as flexible as possible. Flights that are in the evening tend to be the most expensive. A flight in the morning could potentially save you up to 24% on airfare.

What is the cheapest day to fly from London Heathrow Airport to Pasadena?

Use this chart to determine the cheapest time to fly return from Heathrow to Pasadena. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their London Heathrow Airport to Pasadena flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Saturday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

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 14 November 2025.

The most flights from LHR to P4S are scheduled on a Wednesday (50 on average). You will have fewer flight options on Tuesday, 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 14 November 2025.
Read through reviews of airlines operating flights from London Heathrow Airport to Pasadena, such as KLM, Finnair, andVirgin Atlantic. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.7
Good
1,411 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
KLM
7.7
Good
1,411 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Finnair
7.6
Good
1,334 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Virgin Atlantic
7.5
Good
673 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
Lufthansa
6.8
Okay
7,572 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.
British Airways
6.7
Okay
7,521 reviews
KLM
7.7
Good
1,411 reviews
Check prices

Crew

8.4

Comfort

7.7

Entertainment

7.1

Food

7.3

Overall

7.7

Boarding

7.8

Reviews

1 / 20
2.0
Mediocre

Abisola,Oct 2025

LOS - CDG

The food option was finished and what wa left was vegan pasta so I had to go without food for an 8 hour flight without any sort of empathy from crew that was mean.

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 11h 15m. Scandinavian Airlines provides one of the quickest options available for as low as £438. 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?

    £338 is the cheapest one-way deal found within the past few days, from LEVEL. You may also be able to find cheap deals on Finnair and Austrian Airlines, with prices starting from £339 and £343, 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: KLM (87%), Air France (83%), Delta( 83%).

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

    While on average a flight from London Heathrow Airport to Pasadena is generally £2,585, our data shows the cheapest flight currently is £350. When looking at the most popular route, (London Heathrow - Los Angeles), you can expect to pay £358 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 £346). Flying from London Heathrow Airport to Pasadena in July is currently the most expensive (average of £420). 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 14 November 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£285Average£514FlexibilityNo cancel feeOn-time76%
Search Finnair flights
SWISSCheapest£298Average£397FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Norse Atlantic UKCheapest£316Average£577FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Aer LingusCheapest£340Average£552FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest£343Average£602FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Virgin AtlanticCheapest£346Average£467FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapest£352Average£481FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Brussels AirlinesCheapest£361Average£490FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Air FranceCheapest£366Average£489FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapest£366Average£550FlexibilityNo cancel feeOn-time69%
Search United 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 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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