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$178+ 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 11/29. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LON
Oct 15 — Oct 221
Wed 10/15
Wed 10/22
1 adult, Economy
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Cheapflights Tip: The best prices from Pasadena to London are usually found in September or August, booked 31 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 September 15, 2025.

Round-trip from

$500
(Gurufare)

One-way from

$178
(Booking.com)

Popular in

December

Cheapest in

September

Average price

$604
From Pasadena to London (LON)
Search Deals
One-way flight from Pasadena to London (LON)
Search Deals
Highest demand for flights based on searches. 12% potential increase in price ($100 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
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Average for round-trip flights in September 2025
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Find flight deals from Pasadena to London

Cheapest flights from Pasadena to London
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 September 15, 2025.

This Gurufare deal was found by Cheapflights users on 9/14. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/184:40 pmLAX - LHR
1 stop21h 20mTAP AIR PORTUGAL
Fri 10/317:55 pmLHR - LAX
1 stop27h 05mTAP AIR PORTUGAL
Deal found 9/14$500
This Connections by easyJet deal was found by Cheapflights users on 9/15. 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.
Mon 11/172:30 pmLAX - LGW
1 stop38h 15mMultiple Airlines
Sat 11/226:55 amLGW - LAX
1 stop21h 30mMultiple Airlines
Deal found 9/15$501
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/13. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/244:40 pmLAX - LHR
1 stop21h 20mTAP AIR PORTUGAL
Fri 10/317:55 pmLHR - LAX
1 stop27h 05mTAP AIR PORTUGAL
Deal found 9/13$502
This Norse Atlantic Airways deal was found by Cheapflights users on 9/13. 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 Atlantic Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/104:30 pmLAX - LGW
Nonstop10h 25mNorse Atlantic UK
Fri 10/1710:55 amLGW - LAX
Nonstop11h 15mNorse Atlantic UK
Deal found 9/13$502
This Kiwi.com deal was found by Cheapflights users on 9/15. 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.
Mon 11/172:30 pmLAX - LTN
1 stop34h 00mMultiple Airlines
Sat 11/229:25 amLTN - LAX
1 stop19h 00mMultiple Airlines
Deal found 9/15$504
This Gurufare deal was found by Cheapflights users on 9/14. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/184:40 pmLAX - LGW
1 stop33h 05mTAP AIR PORTUGAL
Fri 10/314:40 pmLGW - LAX
1 stop30h 20mTAP AIR PORTUGAL
Deal found 9/14$504
This Mytrip deal was found by Cheapflights users on 9/13. 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.
Fri 10/34:30 pmLAX - LGW
Nonstop10h 25mNorse Atlantic UK
Fri 10/1710:55 amLGW - LAX
Nonstop11h 15mNorse Atlantic UK
Deal found 9/13$506
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/15. 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 TAP AIR PORTUGAL is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/244:40 pmLAX - LGW
1 stop34h 10mTAP AIR PORTUGAL
Fri 10/314:40 pmLGW - LAX
1 stop30h 20mTAP AIR PORTUGAL
Deal found 9/15$507
This Gurufare deal was found by Cheapflights users on 9/13. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/194:40 pmLAX - LHR
1 stop22h 15mTAP AIR PORTUGAL
Fri 10/318:15 amLHR - LAX
1 stop38h 45mTAP AIR PORTUGAL
Deal found 9/13$508
This Kiwi.com deal was found by Cheapflights users on 9/14. 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.
Sun 10/124:30 pmLAX - LGW
Nonstop10h 25mNorse Atlantic UK
Wed 10/2210:55 amLGW - LAX
Nonstop11h 15mNorse Atlantic UK
Deal found 9/14$508
This Norse Atlantic Airways deal was found by Cheapflights users on 9/13. 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 Atlantic Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/244:30 pmLAX - LGW
Nonstop10h 25mNorse Atlantic UK
Wed 10/2210:55 amLGW - LAX
Nonstop11h 15mNorse Atlantic UK
Deal found 9/13$510
This CheapOair deal was found by Cheapflights users on 9/15. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/145:15 pmLAX - LGW
1 stop20h 10mMultiple Airlines
Sat 11/226:55 amLGW - LAX
1 stop21h 30mMultiple Airlines
Deal found 9/15$511

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 September 15, 2025.
Use the filters below to find and compare flights from Pasadena to London that are best for you.

Fly from

Pasadena

Fly to

London

Route

Depart

Return

Price

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Sun 11/9

8:45 am-11:30 am

2 stops18h 45m

London Stansted

Tue 11/18

8:25 pm-4:35 pm

2 stops28h 10m

$519

Los AngelesLondon

LAX - LTN

LAXLTN

Los Angeles

Thu 11/13

1:00 pm-9:05 pm

1 stop24h 05m

London Luton

Thu 11/20

9:50 pm-3:15 pm

1 stop25h 25m

$527

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Tue 11/11

8:45 am-1:50 pm

2 stops21h 05m

London Stansted

Tue 11/18

8:25 pm-4:35 pm

2 stops28h 10m

$537

Los AngelesLondon

LAX - LGW

LAXLGW

Los Angeles

Tue 11/18

6:50 pm-10:35 pm

1 stop19h 45m

London Gatwick

Sun 11/23

7:25 am-12:30 pm

1 stop37h 05m

$548

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 9/24

4:40 pm-11:10 am

Nonstop10h 30m

London Heathrow

Wed 10/22

8:40 am-4:30 pm

1 stop15h 50m

$554

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Tue 11/4

5:45 pm-12:20 pm

Nonstop10h 35m

London Heathrow

Tue 11/25

10:20 am-5:05 pm

1 stop14h 45m

$557

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Thu 10/30

4:25 pm-9:40 pm

2 stops22h 15m

London Heathrow

Thu 11/6

6:40 am-5:00 pm

1 stop18h 20m

$558

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 12/3

10:25 am-8:15 am

1 stop13h 50m

London Heathrow

Tue 12/16

7:30 am-5:05 pm

1 stop17h 35m

$561

Los AngelesLondon

LAX - SEN

LAXSEN

Los Angeles

Wed 10/15

9:25 pm-8:50 pm

1 stop15h 25m

London Southend

Tue 10/21

7:00 am-3:30 pm

3 stops40h 30m

$570

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Mon 10/27

4:25 pm-6:30 pm

2 stops19h 05m

London Heathrow

Fri 11/7

10:20 am-5:00 pm

1 stop14h 40m

$571

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/13

Showing 1-10 of 60 results
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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.
Estimated round-trip 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 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 September 12, 2025.

Booking 31 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 $1,097). 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 September 15, 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 Wednesday afternoons when fares are most often at their lowest. Wednesday 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 September 15, 2025.

The most flights from P4S to LON are scheduled on a Wednesday (57 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (52 on average).

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 September 15, 2025.
Read reviews from past customers who have flown Delta, American Airlines, and Norse Atlantic UK from Pasadena to London. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very good
7,954 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Norse Atlantic UK
7.1
Good
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Iberia
7.0
Good
2,924 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.7
Okay
7,361 reviews
Delta
8.0
Very good
7,954 reviews

Crew

8.5

Entertainment

7.9

Overall

8.0

Boarding

8.2

Comfort

7.9

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

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.

  • How long is the flight from Pasadena to London?

    Departing from Pasadena to London will take you 10h 30m. Airlines will cover a distance of 5439 mi. This flight may include one or multiple stops.

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

    For one-way options, check prices for Norse Atlantic UK. According to our data, you can fly for as low as $179. Users have also found prices from $180 and $370 on TAP AIR PORTUGAL and Finnair, respectively.

  • What are the most popular routes from Pasadena to London?

    When deciding which route to take from Pasadena to London consider Los Angeles - London Heathrow, Los Angeles - London City or Los Angeles - London Gatwick as they are the most popular.

  • What are the most reliable airlines from Pasadena to London?

    Consider KLM (94%), Air France (94%) or Delta (94%) when booking your flight. These represent the most reliable airlines when flying from Pasadena to London.

  • What are the cheapest flights from Pasadena to London?

    Looking for the cheapest flight from Pasadena to London? While on average our users pay $3,098, our data indicates the cheapest price to be $347. The most popular route (Los Angeles - London Heathrow), is priced around $479.

  • Can I find deals for flights from Pasadena to London that include hotel bookings?

    Yes. In addition to deals on Pasadena to London flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Pasadena to London?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Pasadena to London.

  • Can I find deals for business class flights from Pasadena to London?

    Yes. Cheapflights offers flight deals from Pasadena to London 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 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 $1,097). 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

Traveling to a place near London?

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Alternative routes for Pasadena to London

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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 September 15, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$272Average$1,046FlexibilityNo cancel feeOn-time60%
JetBlueCheapest$273Average$794FlexibilityNo cancel feeOn-time62%
SWISSCheapest$336Average$912FlexibilityNo cancel feeOn-time79%
Norse Atlantic UKCheapest$360Average$681FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$363Average$782FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$375Average$651FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$419Average$593FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$469Average$892FlexibilityNo cancel feeOn-time72%
Aer LingusCheapest$475Average$710FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$490Average$704FlexibilityNo cancel feeOn-time76%

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