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$185+ 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 11/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LON
Nov 15 — Nov 221
Sat 11/15
Sat 11/22
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 October 16, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$518
(FlightHub)

One-way from

$185
(Gurufare)

Popular in

December

Cheapest in

September

Average price

$615
Provider with most accurate pricing for Los Angeles-London (LON) flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-London (LON) flights.
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From Pasadena to London (LON)
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One-way flight from Pasadena to London (LON)
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Highest demand for flights based on searches. 13% potential increase in price ($106 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($27 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 16, 2025.

This Expedia deal was found by Cheapflights users on 10/14. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/224:30 pmLAX - LGW
Nonstop10h 25mNorse Atlantic UK
Fri 10/2410:55 amLGW - LAX
Nonstop11h 15mNorse Atlantic UK
Deal found 10/14$525
This FlightHub deal was found by Cheapflights users on 10/15. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/137:30 pmLAX - LHR
1 stop29h 50mScandinavian Airlines
Sun 11/166:40 amLHR - LAX
2 stops18h 20mScandinavian Airlines
Deal found 10/15$530
This SmartFares deal was found by Cheapflights users on 10/16. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/44:45 pmLAX - LGW
1 stop33h 05mTAP AIR PORTUGAL
Wed 11/1210:40 amLGW - LAX
1 stop36h 00mTAP AIR PORTUGAL
Deal found 10/16$530
This Scandinavian Airlines deal was found by Cheapflights users on 10/16. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/131:10 pmLAX - LHR
2 stops18h 50mScandinavian Airlines
Wed 11/196:40 amLHR - LAX
1 stop18h 20mScandinavian Airlines
Deal found 10/16$531
This Cheapflightsfares deal was found by Cheapflights users on 10/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/141:10 pmLAX - LHR
2 stops18h 50mScandinavian Airlines
Fri 11/286:40 amLHR - LAX
1 stop18h 20mScandinavian Airlines
Deal found 10/15$533
This Mytrip deal was found by Cheapflights users on 10/15. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/167:30 pmLAX - STN
2 stops19h 05mMultiple Airlines
Sun 11/236:25 amSTN - LAX
2 stops18h 35mMultiple Airlines
Deal found 10/15$533
This Booking.com deal was found by Cheapflights users on 10/16. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/44:45 pmLAX - LHR
1 stop21h 55mTAP AIR PORTUGAL
Mon 11/101:40 pmLHR - LAX
1 stop33h 20mTAP AIR PORTUGAL
Deal found 10/16$534
This Gurufare deal was found by Cheapflights users on 10/16. 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 Gurufare is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/114:45 pmLAX - LGW
1 stop33h 05mTAP AIR PORTUGAL
Mon 11/1711:00 amLGW - LAX
2 stops36h 00mTAP AIR PORTUGAL
Deal found 10/16$535
This Cheapflightsfares deal was found by Cheapflights users on 10/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/131:10 pmLAX - LHR
2 stops18h 50mScandinavian Airlines
Sun 11/236:40 amLHR - LAX
2 stops18h 20mScandinavian Airlines
Deal found 10/15$536
This Cheapflightsfares deal was found by Cheapflights users on 10/15. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/71:12 pmLAX - LHR
2 stops18h 48mScandinavian Airlines
Sun 11/910:20 amLHR - LAX
1 stop14h 40mScandinavian Airlines
Deal found 10/15$537
This Gotogate deal was found by Cheapflights users on 10/15. 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 Gotogate is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/294:45 pmLAX - LHR
1 stop21h 55mTAP AIR PORTUGAL
Sat 12/66:00 amLHR - LAX
1 stop17h 00mTAP AIR PORTUGAL
Deal found 10/15$538
This SmartFares deal was found by Cheapflights users on 10/15. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/194:40 pmLAX - LGW
1 stop33h 05mTAP AIR PORTUGAL
Wed 11/129:35 amLGW - LAX
2 stops37h 05mTAP AIR PORTUGAL
Deal found 10/15$538

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 October 16, 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 11/16

7:30 pm-10:35 pm

2 stops19h 05m

London Stansted

Sun 11/23

6:25 am-5:00 pm

2 stops18h 35m

$533

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Sun 10/19

6:00 am-11:59 pm

3 stops33h 59m

London Stansted

Tue 11/4

7:30 am-10:15 pm

2 stops22h 45m

$553

Los AngelesLondon

LAX - LTN

LAXLTN

Los Angeles

Tue 11/11

7:30 pm-10:35 pm

2 stops19h 05m

London Luton

Tue 11/18

8:50 pm-5:00 pm

2 stops28h 10m

$554

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Tue 11/4

5:30 pm-11:10 pm

2 stops21h 40m

London Stansted

Fri 11/21

6:55 pm-1:05 pm

2 stops26h 10m

$565

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Mon 11/17

7:30 pm-5:00 pm

2 stops37h 30m

London Heathrow

Thu 11/20

3:35 pm-5:00 pm

2 stops33h 25m

$566

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Thu 11/6

5:30 pm-11:35 pm

2 stops22h 05m

London Stansted

Wed 11/12

6:25 pm-3:15 pm

2 stops28h 50m

$566

Los AngelesLondon

LAX - LTN

LAXLTN

Los Angeles

Wed 11/26

8:30 am-7:25 pm

2 stops26h 55m

London Luton

Mon 12/1

8:50 pm-3:15 pm

2 stops26h 25m

$571

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Sun 12/7

6:30 am-6:25 pm

3 stops27h 55m

London Stansted

Sun 12/14

8:30 am-10:00 pm

2 stops21h 30m

$576

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Tue 11/4

7:30 pm-2:00 pm

Nonstop10h 30m

London Heathrow

Thu 11/20

10:20 am-5:05 pm

1 stop14h 45m

$583

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 11/26

10:30 pm-4:50 pm

Nonstop10h 20m

London Heathrow

Wed 12/3

6:30 am-11:45 am

1 stop13h 15m

$607

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/15

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 October 10, 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, October is the cheapest month in which you can book a flight from Pasadena to London (average of $245). Flying from Pasadena to London in June is currently the most expensive (average of $564). 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 October 16, 2025.

It’s optimal to fly from Pasadena to London in the afternoon. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight at noon.

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 Friday evenings 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 October 16, 2025.

The most flights from P4S to LON are scheduled on a Wednesday (53 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (33 on average).

How much does it cost to fly round-trip from Pasadena to London?

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 October 16, 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
7,980 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

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
7,980 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

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
11,042 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

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
7.2
Good
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

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
2,992 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

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
7,456 reviews
Delta
8.0
Very good
7,980 reviews

Comfort

7.9

Crew

8.5

Overall

8.0

Boarding

8.2

Entertainment

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 20m. 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 TAP AIR PORTUGAL. According to our data, you can fly for as low as $185. Users have also found prices from $326 and $418 on JetBlue and SWISS, 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 Gatwick or Los Angeles - London City as they are the most popular.

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

    Consider KLM (95%), Air France (95%) or Delta (95%) 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 $3,101, our data indicates the cheapest price to be $347. The most popular route (Los Angeles - London Heathrow), is priced around $423.

  • 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, October is the cheapest month in which you can book a flight from Pasadena to London (average of $245). Flying from Pasadena to London in June is currently the most expensive (average of $564). 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?

Book flights to London if you plan to visit one of these locations
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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 October 16, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$272Average$1,046FlexibilityNo cancel feeOn-time60%
JetBlueCheapest$273Average$810FlexibilityNo cancel feeOn-time62%
SWISSCheapest$336Average$922FlexibilityNo cancel feeOn-time79%
Norse Atlantic UKCheapest$360Average$682FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$363Average$850FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$419Average$592FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$427Average$622FlexibilityNo cancel feeOn-timeN/A
Virgin AtlanticCheapest$469Average$899FlexibilityNo cancel feeOn-time72%
Aer LingusCheapest$476Average$700FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$491Average$703FlexibilityNo cancel feeOn-time76%

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