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Cheap flights from London Heathrow Airport to Pasadena from £298

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 2/2. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
23 Nov — 30 Nov1
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 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 24 October 2025.

Round-trip from

£361

One-way from

£298

Popular in

July

Cheapest in

September

Average price

£502
TAP AIR PORTUGAL
  • TAP AIR PORTUGAL
  • 4/12-11/12
  • 2 total stops
  • 34h 50m total
  • London to Pasadena
Search Deals
2/2
  • 2/2
  • 3 total stops
  • 32h 00m total
  • London to Pasadena
Search Deals
Highest demand for flights based on searches. 13% potential increase in price (£58 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 October 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 24 October 2025.

Thu 4/1206:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Thu 11/1216:45LAX - LHR
1 stop18h 10mTAP AIR PORTUGAL
Deal found 22/10£361
Thu 6/1106:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Sat 15/1116:45LAX - LHR
1 stop21h 55mTAP AIR PORTUGAL
Deal found 23/10£362
Thu 6/1106:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Thu 13/1116:45LAX - LHR
1 stop20h 50mTAP AIR PORTUGAL
Deal found 22/10£364
Thu 20/1106:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Thu 22/116:45LAX - LHR
1 stop21h 55mTAP AIR PORTUGAL
Deal found 23/10£367
Mon 17/1118:30LHR - LAX
1 stop28h 30mTAP AIR PORTUGAL
Thu 27/1116:45LAX - LHR
1 stop18h 10mTAP AIR PORTUGAL
Deal found 22/10£370
Sat 6/1206:00LHR - LAX
1 stop17h 00mTAP AIR PORTUGAL
Thu 11/1216:45LAX - LHR
1 stop21h 55mTAP AIR PORTUGAL
Deal found 23/10£388
Tue 18/1106:00LHR - LAX
1 stop17h 00mTAP AIR PORTUGAL
Thu 11/1216:45LAX - LHR
1 stop16h 45mTAP AIR PORTUGAL
Deal found 23/10£389
Thu 6/1106:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Tue 11/1116:45LAX - LHR
1 stop16h 45mTAP AIR PORTUGAL
Deal found 23/10£390
Thu 20/1106:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Tue 2/1216:45LAX - LHR
1 stop16h 45mTAP AIR PORTUGAL
Deal found 22/10£391
Thu 20/1106:00LHR - LAX
1 stop16h 40mTAP AIR PORTUGAL
Sat 29/1116:45LAX - LHR
1 stop21h 55mTAP AIR PORTUGAL
Deal found 22/10£391

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 24 October 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

Wed 5/11

13:45-16:35

1 stop34h 50m

Los Angeles

Mon 10/11

19:00-13:30

Nonstop10h 30m

£464

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Wed 5/11

18:40-16:35

1 stop29h 55m

Los Angeles

Wed 12/11

11:45-16:20

2 stops20h 35m

£465

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Fri 21/11

10:20-17:00

1 stop14h 40m

Los Angeles

Mon 1/12

19:30-21:40

1 stop18h 10m

£471

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Wed 24/12

09:00-18:45

1 stop17h 45m

Los Angeles

Wed 7/1

09:00-07:05

1 stop14h 05m

£486

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 24/11

11:50-15:20

Nonstop11h 30m

Los Angeles

Mon 8/12

18:00-12:30

Nonstop10h 30m

£487

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Tue 18/11

15:20-18:45

Nonstop11h 25m

Los Angeles

Tue 2/12

19:00-13:30

Nonstop10h 30m

£489

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 12/1

15:20-18:45

Nonstop11h 25m

Los Angeles

Tue 19/5

15:30-10:10

Nonstop10h 40m

£493

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 24/11

09:00-16:35

1 stop15h 35m

Los Angeles

Fri 5/12

19:00-13:30

Nonstop10h 30m

£494

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Thu 20/11

09:00-16:35

1 stop15h 35m

Los Angeles

Mon 8/12

19:00-13:30

Nonstop10h 30m

£494

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Sun 8/2

20:05-16:35

1 stop28h 30m

£314

Flights are sorted by cheapest return flights first.

Deals found on 21/10

Showing 1-10 of 20 results
1
2

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 17 October 2025.

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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Pasadena (average of £352). Flying from London Heathrow Airport to Pasadena in July is currently the most expensive (average of £417). 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 24 October 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.

How much does it cost for a return flight from London Heathrow Airport to Pasadena?

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 24 October 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
1,405 reviews
Check prices

Comfort

7.6

Entertainment

7.1

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.7

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
1,405 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Comfort

7.6

Entertainment

7.1

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.7

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
1,333 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Comfort

7.6

Entertainment

7.1

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.7

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
670 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Comfort

7.6

Entertainment

7.1

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.7

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
7,514 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Comfort

7.6

Entertainment

7.1

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.7

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
7,469 reviews
KLM
7.7
Good
1,405 reviews
Check prices

Comfort

7.6

Entertainment

7.1

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.7

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 14h 40m. United Airlines provides one of the quickest options available for as low as £471. 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?

    £314 is the cheapest one-way deal found within the past few days, from SWISS. You may also be able to find cheap deals on British Airways and Austrian Airlines, with prices starting from £318 and £342, 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 (84%), Air France (84%), Delta( 84%).

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

    While on average a flight from London Heathrow Airport to Pasadena is generally £2,618, our data shows the cheapest flight currently is £365. When looking at the most popular route, (London Heathrow - Los Angeles), you can expect to pay £347 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, September is the cheapest month in which you can book a flight from London Heathrow Airport to Pasadena (average of £352). Flying from London Heathrow Airport to Pasadena in July is currently the most expensive (average of £417). 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 24 October 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£281Average£486FlexibilityNo cancel feeOn-time76%
Search Finnair flights
SWISSCheapest£294Average£396FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Norse Atlantic UKCheapest£308Average£578FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Aer LingusCheapest£336Average£543FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest£338Average£571FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Scandinavian AirlinesCheapest£346Average£481FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Brussels AirlinesCheapest£348Average£477FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£359Average£481FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Air FranceCheapest£360Average£484FlexibilityNo cancel feeOn-time77%
Search Air France flights
United AirlinesCheapest£362Average£557FlexibilityNo 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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