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Cheap flights from London Heathrow Airport to Pasadena from £227

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 2/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
18 Jun — 25 Jun1
1 adult

Cheapflights Tip: The best prices from London Heathrow to Pasadena are usually found in March or February, booked 7 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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 13 June 2025.

Round-trip from

£372

One-way from

£227

Popular in

August

Cheapest in

March

Average price

£512
Virgin Atlantic
  • Virgin Atlantic
  • 1/9-15/9
  • 2 total stops
  • 28h 55m total
  • London to Pasadena
Search Deals
2/9
  • 2/9
  • 1 total stop
  • 29h 15m 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. 3% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
Search Deals

Find flight deals from Heathrow to Pasadena

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 13 June 2025.

Mon 1/908:40LHR - LAX
1 stop14h 10mVirgin Atlantic
Mon 15/908:00LAX - LHR
1 stop14h 45mVirgin Atlantic
Deal found 11/6£372
Tue 16/910:20LHR - LAX
1 stop14h 45mFinnair
Thu 25/913:35LAX - LHR
Nonstop10h 25mFinnair
Deal found 11/6£378
Thu 11/919:50LHR - LAX
1 stop26h 45mTAP AIR PORTUGAL
Tue 16/916:40LAX - LHR
1 stop17h 05mTAP AIR PORTUGAL
Deal found 12/6£379
Wed 10/908:40LHR - LAX
1 stop14h 10mDelta
Wed 24/920:05LAX - LHR
Nonstop10h 30mDelta
Deal found 11/6£383
Wed 1/1021:05LHR - LAX
2 stops27h 15mScandinavian Airlines
Sun 5/1019:30LAX - LHR
1 stop14h 10mScandinavian Airlines
Deal found 11/6£385
Tue 30/907:45LHR - LAX
1 stop16h 20mAmerican Airlines
Wed 22/1013:25LAX - LHR
Nonstop10h 35mAmerican Airlines
Deal found 12/6£386
Mon 1/1208:55LHR - LAX
1 stop15h 35mUnited Airlines
Wed 17/1200:20LAX - LHR
1 stop23h 35mUnited Airlines
Deal found 12/6£389
Mon 8/910:20LHR - LAX
1 stop14h 45mMultiple Airlines
Fri 19/907:00LAX - LHR
1 stop20h 05mMultiple Airlines
Deal found 11/6£397
Fri 20/606:00LHR - LAX
1 stop18h 30mSWISS
Sun 6/719:35LAX - LHR
1 stop36h 50mSWISS
Deal found 12/6£398
Sat 20/906:55LHR - LAX
1 stop16h 20mLufthansa
Fri 26/916:40LAX - LHR
Nonstop10h 30mLufthansa
Deal found 11/6£408
Sun 28/906:00LHR - LAX
1 stop15h 05mAustrian Airlines
Tue 21/1007:00LAX - LHR
1 stop20h 25mAustrian Airlines
Deal found 12/6£425
Wed 25/606:30LHR - LAX
1 stop16h 20mKLM
Tue 8/722:50LAX - LHR
Nonstop10h 25mKLM
Deal found 12/6£427

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 13 June 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 1/9

08:40-14:50

1 stop14h 10m

Los Angeles

Mon 15/9

08:00-06:45

1 stop14h 45m

£372

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 30/6

06:00-16:30

1 stop18h 30m

Los Angeles

Mon 7/7

19:35-21:45

1 stop18h 10m

£377

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Tue 16/9

10:20-17:05

1 stop14h 45m

Los Angeles

Thu 25/9

13:35-08:00

Nonstop10h 25m

£378

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Thu 11/9

19:50-14:35

1 stop26h 45m

Los Angeles

Tue 16/9

16:40-17:45

1 stop17h 05m

£379

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Wed 10/9

08:40-14:50

1 stop14h 10m

Los Angeles

Wed 24/9

20:05-14:35

Nonstop10h 30m

£383

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Wed 1/10

21:05-16:20

2 stops27h 15m

Los Angeles

Sun 5/10

19:30-17:40

1 stop14h 10m

£385

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Tue 30/9

07:45-16:05

1 stop16h 20m

Los Angeles

Wed 22/10

13:25-08:00

Nonstop10h 35m

£386

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 1/12

08:55-16:30

1 stop15h 35m

Los Angeles

Thu 18/12

23:58-07:55

1 stop23h 57m

£389

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Mon 8/9

10:20-17:05

1 stop14h 45m

Los Angeles

Fri 19/9

07:00-11:05

1 stop20h 05m

£397

LondonLos Angeles

LHR - LAX

LHRLAX

London Heathrow

Wed 2/7

07:25-15:15

1 stop15h 50m

Los Angeles

Wed 9/7

16:45-11:10

Nonstop10h 25m

£404

Flights are sorted by cheapest return flights first.

Deals found on 12/6

Showing 1-10 of 22 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 9 June 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Pasadena (average of £575). Flying from London Heathrow Airport to Pasadena in July is currently the most expensive (average of £811). 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 13 June 2025.

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.

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 Friday evenings 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 13 June 2025.

The most flights from LHR to P4S are scheduled on a Monday (53 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (48 on average).

Rainfall in Pasadena by month

Plan your trip to Pasadena by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Pasadena ranges from 0.0 - 87.0 inches per month. February is typically the wettest month, when rainfall can reach 87.0 mm. July is typically the driest time to visit Pasadena when rainfall is around 0.0 mm.

Temperature in Pasadena by month

Plan your trip to Pasadena by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Pasadena, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 14.0 C).

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 13 June 2025.
See what other customers who have flown with Delta, KLM and Austrian Airlines from London to Pasadena have to say. 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.
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very Good
7,950 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
KLM
7.8
Good
1,358 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Austrian Airlines
7.6
Good
802 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Finnair
7.6
Good
1,290 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
SWISS
7.5
Good
1,624 reviews
Delta
8.0
Very Good
7,950 reviews
Check prices

Boarding

8.2

Comfort

7.9

Food

7.3

Overall

8.0

Entertainment

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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.

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

    £291 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on Iberia and Vueling, with prices starting from £309 and £321, 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 (94%), Iberia (91%), KLM( 90%).

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

    While on average a flight from London Heathrow Airport to Pasadena is generally £3,508, our data shows the cheapest flight currently is £351. When looking at the most popular route, (London Heathrow - Los Angeles), you can expect to pay £204 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, January is the cheapest month in which you can book a flight from London Heathrow Airport to Pasadena (average of £575). Flying from London Heathrow Airport to Pasadena in July is currently the most expensive (average of £811). 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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest£274Average£375FlexibilityNo cancel feeOn-time79%
Search SWISS flights
DeltaCheapest£324Average£521FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Norse Atlantic UKCheapest£324Average£545FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Austrian AirlinesCheapest£340Average£469FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
Brussels AirlinesCheapest£341Average£492FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Air FranceCheapest£349Average£453FlexibilityNo cancel feeOn-time77%
Search Air France flights
Scandinavian AirlinesCheapest£353Average£497FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
KLMCheapest£353Average£508FlexibilityNo cancel feeOn-time75%
Search KLM flights
United AirlinesCheapest£356Average£560FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
British AirwaysCheapest£357Average£498FlexibilityNo cancel feeOn-time70%
Search British Airways flights

Fly with Cheapflights

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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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