London

$320+ 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 7/8. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LON
jun. 20 — jun. 271
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Cheapflights Tip: The best prices from Pasadena to London are usually found in September or October, booked 31 days in advance, depart on a Wednesday or Monday and return on a Friday

Cheap 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 mayo 21, 2026.

This FlightHub deal was found by Cheapflights users on 5/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 11/37:30 pm
LAX
-
LHR
2 stops18h 05m
Scandinavian Airlines
mar. 11/177:05 am
LHR
-
LAX
2 stops17h 55m
Scandinavian Airlines
Deal found 5/17$796
This Scandinavian Airlines deal was found by Cheapflights users on 5/17. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/67:30 pm
LAX
-
LHR
2 stops30h 05m
Scandinavian Airlines
dom. 11/226:40 am
LHR
-
LAX
1 stop18h 20m
Scandinavian Airlines
Deal found 5/17$798
This FlightHub deal was found by Cheapflights users on 5/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 11/67:30 pm
LAX
-
LHR
2 stops30h 05m
Scandinavian Airlines
jue. 11/127:05 am
LHR
-
LAX
2 stops17h 55m
Scandinavian Airlines
Deal found 5/17$799
This Mytrip deal was found by Cheapflights users on 5/18. 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.
lun. 6/18:15 am
LAX
-
STN
3 stops30h 10m
Multiple Airlines
mié. 6/109:00 pm
STN
-
LAX
2 stops27h 30m
Multiple Airlines
Deal found 5/18$801
This Cheapflightsfares deal was found by Cheapflights users on 5/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 11/307:30 pm
LAX
-
LHR
1 stop14h 10m
Scandinavian Airlines
mar. 12/86:40 am
LHR
-
LAX
2 stops18h 20m
Scandinavian Airlines
Deal found 5/17$803
This Scandinavian Airlines deal was found by Cheapflights users on 5/17. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/87:30 pm
LAX
-
LHR
1 stop18h 10m
Scandinavian Airlines
mié. 11/116:40 am
LHR
-
LAX
1 stop18h 20m
Scandinavian Airlines
Deal found 5/17$808
This Scandinavian Airlines deal was found by Cheapflights users on 5/17. 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 Scandinavian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 11/87:30 pm
LAX
-
LHR
1 stop14h 10m
Scandinavian Airlines
jue. 11/127:05 am
LHR
-
LAX
2 stops17h 55m
Scandinavian Airlines
Deal found 5/17$812
This Cheapflightsfares deal was found by Cheapflights users on 5/18. 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.
mar. 10/204:45 pm
LAX
-
LHR
1 stop17h 00m
TAP AIR PORTUGAL
mar. 11/36:00 am
LHR
-
LAX
1 stop17h 15m
TAP AIR PORTUGAL
Deal found 5/18$819
This Booking.com deal was found by Cheapflights users on 5/16. 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.
jue. 11/267:30 pm
LAX
-
LHR
1 stop18h 10m
Scandinavian Airlines
lun. 11/309:05 pm
LHR
-
LAX
2 stops27h 55m
Scandinavian Airlines
Deal found 5/16$822
This Cheapflightsfares deal was found by Cheapflights users on 5/16. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/265:15 pm
LAX
-
LGW
2 stops19h 20m
TAP AIR PORTUGAL
lun. 11/309:35 pm
LGW
-
LAX
2 stops25h 40m
TAP AIR PORTUGAL
Deal found 5/16$822
This Cheapflightsfares deal was found by Cheapflights users on 5/17. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/134:40 pm
LAX
-
LHR
1 stop22h 15m
TAP AIR PORTUGAL
sáb. 9/197:50 pm
LHR
-
LAX
1 stop25h 40m
TAP AIR PORTUGAL
Deal found 5/17$824
This FlightHub deal was found by Cheapflights users on 5/17. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 11/257:30 pm
LAX
-
LHR
1 stop18h 10m
Scandinavian Airlines
lun. 11/309:05 pm
LHR
-
LAX
2 stops27h 55m
Scandinavian Airlines
Deal found 5/17$826

Find flight deals from Pasadena to London

Keep the following information in mind while searching for Pasadena to London flight deals. Data was last updated mayo 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$796
(FlightHub)

One-way from

$320
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$838
Provider with most accurate pricing for Los Angeles Los Angeles-London (LON) flight deals.
Provider most trusted by Cheapflights users for Los Angeles Los Angeles-London (LON) flights.
From Pasadena to London (LON)
One-way flight from Pasadena to London (LON)
Highest demand for flights based on searches. 11% potential increase in price ($96 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Average for round-trip flights in May 2026

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 mayo 21, 2026.
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

Cheapest round-trip

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles Los Angeles

mié. 9/16

1:25 pm-4:40 pm

1 stop19h 15m

London Stansted

mié. 9/23

10:50 am-11:40 am

1 stop32h 50m

$863

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles Los Angeles

mié. 9/2

8:10 pm-3:00 pm

Nonstop10h 50m

London Heathrow

mar. 9/15

6:30 am-11:50 am

1 stop13h 20m

$881

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles Los Angeles

sáb. 8/1

10:25 pm-6:30 am

1 stop24h 05m

London Heathrow

mié. 8/19

8:40 am-4:30 pm

1 stop15h 50m

$885

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles Los Angeles

lun. 9/14

1:25 pm-10:10 pm

1 stop24h 45m

London Stansted

lun. 9/21

10:50 am-11:40 am

1 stop32h 50m

$901

Los AngelesLondon

LAX - LGW

LAXLGW

Los Angeles Los Angeles

dom. 9/6

4:40 pm-9:45 am

1 stop33h 05m

London Gatwick

lun. 9/21

9:15 pm-2:45 pm

2 stops25h 30m

$905

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles Los Angeles

mar. 8/4

10:20 am-6:20 am

1 stop36h 00m

London Stansted

lun. 8/24

7:25 am-8:20 am

1 stop32h 55m

$907

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles Los Angeles

lun. 9/7

7:10 pm-9:35 pm

2 stops18h 25m

London Heathrow

vie. 9/11

7:05 am-10:45 pm

2 stops23h 40m

$909

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles Los Angeles

mar. 9/15

8:10 pm-4:40 pm

1 stop36h 30m

London Stansted

mié. 9/23

6:55 am-11:40 am

1 stop36h 45m

$911

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles Los Angeles

sáb. 9/19

7:00 am-9:35 am

2 stops18h 35m

London Heathrow

vie. 9/25

10:20 am-11:50 pm

2 stops21h 30m

$920

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles Los Angeles

lun. 9/21

8:10 pm-3:00 pm

Nonstop10h 50m

London Heathrow

lun. 9/28

8:40 am-2:45 pm

1 stop14h 05m

$931

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/20

Showing 1-10 of 60 resultsSorted by cheapest first
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6

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

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 mayo 21, 2026.

It’s optimal to fly from Pasadena to London at noon. By choosing this option you can save up to 34% on the cost of your flight, compared to a flight in the morning.

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 mayo 21, 2026.

The most flights from P4S to LON are scheduled on a Thursday (54 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (53 on average).

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

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 May 16, 2026.

Travelers seeking maximum savings on their Pasadena to London flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

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 mayo 21, 2026.
Read reviews from past customers who have flown Delta,United Airlines, andNorse Atlantic UK from Pasadena to London. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.9

Entertainment

7.8

Food

7.2

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.

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.9

Entertainment

7.8

Food

7.2

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.

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.9

Entertainment

7.8

Food

7.2

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

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.9

Entertainment

7.8

Food

7.2

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.

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.9

Entertainment

7.8

Food

7.2

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.

Boarding

8.1

Crew

8.5

Comfort

7.8

Overall

7.9

Entertainment

7.8

Food

7.2

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 50m. 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 $136. Users have also found prices from $168 and $230 on TAP AIR PORTUGAL and KLM, respectively.

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

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

    Consider KLM (90%), Air France (90%) or Delta (90%) 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 $2,747, our data indicates the cheapest price to be $386. The most popular route (Los Angeles Los Angeles - London Heathrow), is priced around $666.

  • 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.

See more FAQs

Traveling to a place near London?

Book flights to London if you plan to visit one of these locations
Ilford
Hounslow
Dorking
Winchester
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Orpington
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Hayes
Kingston upon Thames
Eastbourne
Slough
Stansted
Sutton

Browse thousands of different options on Cheapflights for your next trip

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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 mayo 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$262Average$832FlexibilityNo cancel feeOn-time62%
Brussels AirlinesCheapest$291Average$902FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$336Average$778FlexibilityNo cancel feeOn-time79%
Norse Atlantic UKCheapest$345Average$649FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$428Average$553FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$474Average$638FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$485Average$764FlexibilityNo cancel feeOn-time76%
IberiaCheapest$515Average$773FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$522Average$788FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$529Average$857FlexibilityNo cancel feeOn-time67%

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