$222+ Cheap flights from Pasadena, CA to Heathrow (LHR)
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 7/28. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Pasadena to Heathrow with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Pasadena to London Heathrow are usually found in October or September, booked 80 days in advance, depart on a Wednesday or Tuesday and return on a Thursday
Cheap flight deals from Pasadena to Heathrow
Keep the following information in mind while searching for Pasadena to Heathrow flight deals. Data was last updated junio 12, 2025.
Round-trip from | $594 (United Airlines) |
|---|---|
One-way from | $222 (Kiwi.com) |
Popular in | June |
Cheapest in | October |
Average price | $1,022 |
Find flight deals from Pasadena to Heathrow
Cheapest flights from Pasadena to HeathrowExplore the most affordable flight options available from Pasadena to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.
Explore the most affordable flight options available from Pasadena to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on junio 12, 2025.
This Air Canada deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Air Canada is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Cheapflightsfares deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This KLM deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Delta deal was found by Cheapflights users on 6/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This SWISS deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure SWISS is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This United deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Lufthansa deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Lufthansa is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Iberia deal was found by Cheapflights users on 6/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Iberia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Scandinavian Airlines deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Austrian Airlines deal was found by Cheapflights users on 6/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Austrian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Virgin Atlantic deal was found by Cheapflights users on 6/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Virgin Atlantic is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Cheapflights Fare Finder
Customize your flight search to find flights from Pasadena to Heathrow 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 2,558,603 searches. Data last updated junio 12, 2025.
Use the filters below to find and compare flights from Pasadena to London Heathrow Airport that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
dom. 8/31
5:10 am-11:50 am
2 stops22h 40m
London Heathrow
mar. 9/9
5:40 pm-12:58 pm
2 stops27h 18m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
mié. 7/16
8:05 am-6:30 am
1 stop14h 25m
London Heathrow
mar. 8/12
1:05 pm-4:10 pm
Nonstop11h 05m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
dom. 7/20
3:30 pm-10:00 am
Nonstop10h 30m
London Heathrow
jue. 7/31
10:55 am-11:51 pm
1 stop20h 56m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
sáb. 8/2
4:50 pm-1:50 pm
1 stop13h 00m
London Heathrow
lun. 9/8
6:30 am-11:50 am
1 stop13h 20m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
dom. 8/3
7:11 am-9:40 am
1 stop18h 29m
London Heathrow
mar. 8/19
5:50 pm-7:40 pm
2 stops33h 50m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
vie. 8/15
3:40 pm-10:05 am
Nonstop10h 25m
London Heathrow
vie. 8/22
10:15 am-1:30 pm
Nonstop11h 15m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
mié. 8/13
2:55 pm-12:40 pm
1 stop13h 45m
London Heathrow
mié. 8/20
7:25 am-3:15 pm
1 stop15h 50m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
dom. 7/13
1:25 pm-8:00 am
Nonstop10h 35m
London Heathrow
jue. 8/21
8:00 pm-4:05 pm
1 stop28h 05m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
lun. 8/18
7:30 pm-6:30 pm
1 stop15h 00m
London Heathrow
mar. 9/2
9:05 pm-4:20 pm
2 stops27h 15m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
mar. 9/2
7:30 am-9:35 am
2 stops18h 05m
London Heathrow
jue. 9/11
6:00 am-1:05 pm
1 stop15h 05m
Best time to book a flight from Pasadena to Heathrow
Have a flexible travel schedule? Discover the best time to fly to Heathrow from Pasadena with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Pasadena to London Heathrow Airport
How far ahead should I book a flight from Pasadena to London Heathrow Airport?
Use this chart to determine the optimal time to book a round-trip flight from Pasadena to Heathrow. Price data was last updated on June 9, 2025.
To ensure you get the cheapest price possible for a flight from Pasadena to London Heathrow Airport, you should look to book at least 80 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.
What is the cheapest month to book a flight from Pasadena to London Heathrow Airport?
Currently, November is the cheapest month in which you can book a flight from Pasadena to London Heathrow Airport (average of $661). Flying from Pasadena to London Heathrow Airport in June is currently the most expensive (average of $1,108). 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 P4S to LHR?
Find hourly flight availability from Pasadena to Heathrow. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated junio 12, 2025.
When flying from Pasadena to London Heathrow Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
What is the cheapest day to fly from Pasadena to London Heathrow Airport?
Use this chart to determine the cheapest time to fly round-trip from Pasadena to Heathrow. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Pasadena to London Heathrow Airport flight should consider departing on Sunday mornings when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Pasadena to London Heathrow Airport
Explore weekly flight availability from Pasadena to Heathrow. 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 junio 12, 2025.
The most flights from P4S to LHR are scheduled on a Monday (58 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (43 on average).
Rainfall in Heathrow by month
Plan your trip to Heathrow by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London Heathrow Airport ranges from 1.6 - 2.8 inches per month. January is typically the wettest month, when rainfall can reach 2.8 in. July is typically the driest time to visit London Heathrow Airport when rainfall is around 1.6 in.
Temperature in Heathrow by month
Plan your trip to Heathrow by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London Heathrow Airport, 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 62.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 39.2 F).
Reviews of airlines servicing Heathrow
Get insights into the airlines that provide service to Heathrow. 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 Heathrow. Reviews last updated junio 12, 2025.
Get a feel of what it's like to fly with Delta, KLM and Austrian Airlines from Pasadena to London by reading reviews from past customers. 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.
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Boarding
Comfort
Entertainment
Overall
Food
Crew
Reviews
Aaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from Pasadena to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Pasadena to Heathrow
See prices for flight routes from nearby airports that may be better suited for you.
Top 10 airlines flying from Pasadena to Heathrow
Discover the top 10 airlines that operate flights from Pasadena to Heathrow. 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 2,558,603 searches. Data last updated junio 12, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$272 | Average$933 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$336 | Average$722 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$419 | Average$601 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$430 | Average$646 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$449 | Average$792 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$454 | Average$810 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$463 | Average$725 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$479 | Average$810 | FlexibilityNo cancel fee | On-time70% | |
| Cheapest$486 | Average$819 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$509 | Average$671 | FlexibilityNo cancel fee | On-timeN/A |