$218+ Cheap flights from Pasadena, CA to London (LON)
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 8/2. Fares are subject to change and may not be available on all flights or dates of travel.
Find cheap flights from Pasadena to London 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 are usually found in October or September, booked 55 days in advance, depart on a Wednesday or Tuesday and return on a Thursday
Cheap flight deals from Pasadena to London
Keep the following information in mind while searching for Pasadena to London flight deals. Data was last updated June 18, 2025.
Round-trip from | $594 (United Airlines) |
|---|---|
One-way from | $218 (Connections by easyJet) |
Popular in | December |
Cheapest in | October |
Average price | $836 |
Find flight deals from Pasadena to London
Cheapest flights from Pasadena to LondonExplore the most affordable flight options available from Pasadena to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.
Explore the most affordable flight options available from Pasadena to London. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 18, 2025.
This United Airlines deal was found by Cheapflights users on 6/16. 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 Connections by easyJet deal was found by Cheapflights users on 6/17. 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 Connections by easyJet is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This British Airways deal was found by Cheapflights users on 6/16. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Kiwi.com deal was found by Cheapflights users on 6/17. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Booking.com deal was found by Cheapflights users on 6/17. 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 Booking.com 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 6/16. 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 Norse deal was found by Cheapflights users on 6/17. 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 Norse is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
This Mytrip deal was found by Cheapflights users on 6/17. 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 Mytrip 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 6/17. 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 Delta deal was found by Cheapflights users on 6/16. 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 Virgin Atlantic deal was found by Cheapflights users on 6/16. 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 London 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 June 18, 2025.
Use the filters below to find and compare flights from Pasadena to London that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
Thu 7/31
4:13 pm-12:20 pm
1 stop12h 07m
London Heathrow
Wed 8/13
9:30 am-7:40 pm
1 stop18h 10m
Los AngelesLondon
LAX - LTN
LAXLTN
Los Angeles
Mon 8/11
9:25 pm-9:15 am
1 stop27h 50m
London Luton
Mon 8/25
6:05 am-7:05 pm
1 stop21h 00m
Los AngelesLondon
LAX - LGW
LAXLGW
Los Angeles
Mon 8/11
7:45 pm-7:10 pm
1 stop15h 25m
London Gatwick
Sun 8/24
10:55 am-2:10 pm
Nonstop11h 15m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
Sun 7/6
8:05 pm-2:35 pm
Nonstop10h 30m
London Heathrow
Tue 8/12
2:20 pm-5:35 pm
Nonstop11h 15m
Los AngelesLondon
LAX - LGW
LAXLGW
Los Angeles
Sun 8/3
4:30 pm-10:55 am
Nonstop10h 25m
London Gatwick
Wed 8/13
10:55 am-2:10 pm
Nonstop11h 15m
Los AngelesLondon
LAX - LHR
LAXLHR
Los Angeles
Fri 9/5
10:52 am-11:50 am
2 stops16h 58m
London Heathrow
Sun 9/7
9:30 am-8:53 pm
2 stops19h 23m
Los AngelesLondon
LAX - LCY
LAXLCY
Los Angeles
Mon 7/28
2:49 pm-8:50 am
2 stops34h 01m
London City
Wed 8/13
7:20 pm-9:55 pm
2 stops34h 35m
Los AngelesLondon
LAX - SEN
LAXSEN
Los Angeles
Fri 8/8
9:25 pm-3:20 pm
1 stop33h 55m
London Southend
Fri 8/29
11:05 am-7:05 pm
1 stop16h 00m
Los AngelesLondon
LAX - LGW
LAXLGW
Los Angeles
Sat 8/2
11:55 pm-10:00 am
2 stops26h 05m
London Gatwick
Mon 8/18
12:00 pm-8:33 am
2 stops28h 33m
Los AngelesLondon
LAX - LCY
LAXLCY
Los Angeles
Mon 9/8
4:50 pm-5:20 pm
1 stop16h 30m
London City
Sun 9/14
7:05 pm-2:50 pm
1 stop27h 45m
Best time to book a flight from Pasadena to London
Have a flexible travel schedule? Discover the best time to fly to London from Pasadena with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Pasadena to London
How far ahead should I book a flight from Pasadena to London?
Use this chart to determine the optimal time to book a round-trip flight from Pasadena to London. Price data was last updated on June 13, 2025.
Booking 55 days in advance of your planned departure date is, on average, the best time to get cheap flights from Pasadena to London. 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 Pasadena to London?
Currently, November is the cheapest month in which you can book a flight from Pasadena to London (average of $661). Flying from Pasadena to London in June is currently the most expensive (average of $1,106). 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 LON?
Find hourly flight availability from Pasadena to London. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 18, 2025.
When flying from Pasadena to London, 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?
Use this chart to determine the cheapest time to fly round-trip from Pasadena to London. Price data was last updated on December 16, 2024.
Travelers seeking maximum savings on their Pasadena to London 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
Explore weekly flight availability from Pasadena to London. 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 June 18, 2025.
The most flights from P4S to LON are scheduled on a Monday (59 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 on average).
Rainfall in London by month
Plan your trip to London by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in London 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 when rainfall is around 1.6 in.
Temperature in London by month
Plan your trip to London by taking into account the average temperature totals by month.
If weather is an important factor for your trip to London, 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 London
Get insights into the airlines that provide service to London. 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 London. Reviews last updated June 18, 2025.
Peruse reviews from past customers who have flown with Delta, KLM and Austrian Airlines from Pasadena to London to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
Boarding
Crew
Overall
Comfort
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Boarding
Crew
Overall
Comfort
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Boarding
Crew
Overall
Comfort
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Boarding
Crew
Overall
Comfort
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Boarding
Crew
Overall
Comfort
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Food
Boarding
Crew
Overall
Comfort
Entertainment
Reviews
Aaron,Oct 2024
LAX - LHR
Related info for your journey
Find useful and relevant information for your journey from Pasadena to London. 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 London
See prices for flight routes from nearby airports that may be better suited for you.
Top 10 airlines flying from Pasadena to London
Discover the top 10 airlines that operate flights from Pasadena to London. 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 June 18, 2025.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$272 | Average$933 | FlexibilityNo cancel fee | On-time60% | |
| Cheapest$336 | Average$922 | FlexibilityNo cancel fee | On-time79% | |
| Cheapest$396 | Average$677 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$418 | Average$816 | FlexibilityNo cancel fee | On-time72% | |
| Cheapest$419 | Average$601 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$430 | Average$646 | FlexibilityNo cancel fee | On-time77% | |
| Cheapest$445 | Average$760 | FlexibilityNo cancel fee | On-time76% | |
| Cheapest$486 | Average$810 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$509 | Average$671 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$546 | Average$731 | FlexibilityNo cancel fee | On-time76% |