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$213+ 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 1/26. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LON
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 30, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$575
(Scandinavian Airlines)

One-way from

$213
(Mytrip)

Popular in

December

Cheapest in

September

Average price

$618
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. 12% potential increase in price ($102 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 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 30, 2025.

This Scandinavian Airlines deal was found by Cheapflights users on 10/28. 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 12/41:10 pmLAX - LHR
2 stops20h 30mScandinavian Airlines
Thu 12/119:05 pmLHR - LAX
2 stops27h 55mScandinavian Airlines
Deal found 10/28$575
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Thu 11/275:30 pmLAX - STN
2 stops22h 05mMultiple Airlines
Thu 12/46:05 pmSTN - LAX
2 stops27h 00mMultiple Airlines
Deal found 10/28$576
This lol.travel deal was found by Cheapflights users on 10/28. 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 lol.travel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/95:45 pmLAX - LHR
Nonstop10h 35mFinnair
Tue 11/2510:20 amLHR - LAX
1 stop14h 45mFinnair
Deal found 10/28$577
This Gotogate deal was found by Cheapflights users on 10/29. 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.
Tue 12/24:45 pmLAX - LGW
1 stop33h 05mTAP AIR PORTUGAL
Mon 6/14:25 pmLGW - LAX
1 stop30h 20mTAP AIR PORTUGAL
Deal found 10/29$577
This Mytrip deal was found by Cheapflights users on 10/27. 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.
Mon 11/247:30 pmLAX - LGW
2 stops17h 30mMultiple Airlines
Wed 12/32:25 pmLGW - LAX
2 stops34h 35mMultiple Airlines
Deal found 10/27$578
This Gurufare deal was found by Cheapflights users on 10/28. 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.
Wed 11/1910:25 amLAX - LHR
1 stop14h 10mFinnair
Tue 11/257:30 amLHR - LAX
1 stop17h 35mFinnair
Deal found 10/28$579
This FlightHub deal was found by Cheapflights users on 10/28. 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.
Sat 11/154:45 pmLAX - LHR
1 stop35h 55mTAP AIR PORTUGAL
Tue 12/26:00 amLHR - LAX
1 stop17h 00mTAP AIR PORTUGAL
Deal found 10/28$580
This Gotogate deal was found by Cheapflights users on 10/28. 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.
Wed 11/128:15 pmLAX - LHR
1 stop12h 35mAer Lingus
Wed 11/1912:10 pmLHR - LAX
1 stop14h 20mAer Lingus
Deal found 10/28$581
This Mytrip deal was found by Cheapflights users on 10/29. 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.
Wed 11/197:45 amLAX - STN
3 stops30h 55mMultiple Airlines
Sun 11/236:25 amSTN - LAX
2 stops23h 50mMultiple Airlines
Deal found 10/29$581
This Booking.com deal was found by Cheapflights users on 10/29. 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.
Wed 11/53:55 pmLAX - LHR
1 stop15h 40mAer Lingus
Wed 11/197:50 amLHR - LAX
1 stop18h 40mAer Lingus
Deal found 10/29$582
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Tue 12/28:20 amLAX - STN
2 stops26h 20mMultiple Airlines
Thu 12/118:05 pmSTN - LAX
2 stops25h 00mMultiple Airlines
Deal found 10/28$582
This Mytrip deal was found by Cheapflights users on 10/28. 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.
Wed 11/197:45 amLAX - STN
3 stops27h 00mMultiple Airlines
Tue 11/258:10 pmSTN - LAX
2 stops24h 55mMultiple Airlines
Deal found 10/28$583

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 30, 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

Tue 12/9

7:30 pm-11:10 pm

2 stops19h 40m

London Stansted

Sun 12/14

6:25 am-5:00 pm

2 stops18h 35m

$585

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Mon 1/19

5:30 pm-9:25 pm

2 stops19h 55m

London Stansted

Mon 1/26

7:00 pm-10:00 pm

3 stops35h 00m

$589

Los AngelesLondon

LAX - LTN

LAXLTN

Los Angeles

Fri 11/28

5:30 pm-8:10 pm

2 stops18h 40m

London Luton

Thu 12/4

8:50 pm-1:05 pm

2 stops24h 15m

$590

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Wed 2/4

8:30 am-7:40 pm

2 stops27h 10m

London Stansted

Tue 2/17

8:10 am-11:48 am

3 stops35h 38m

$593

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 2/25

7:30 pm-6:30 pm

1 stop15h 00m

London Heathrow

Sat 3/7

6:40 am-5:00 pm

1 stop18h 20m

$598

Los AngelesLondon

LAX - LTN

LAXLTN

Los Angeles

Mon 2/9

11:30 am-8:10 pm

3 stops24h 40m

London Luton

Tue 2/17

8:50 pm-1:05 pm

2 stops24h 15m

$598

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Sun 11/30

5:30 pm-10:35 pm

2 stops21h 05m

London Stansted

Sat 12/6

12:00 pm-1:05 pm

2 stops33h 05m

$599

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Thu 1/22

7:30 pm-11:20 pm

2 stops19h 50m

London Stansted

Sat 1/31

9:45 pm-5:00 pm

2 stops27h 15m

$601

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Tue 1/13

7:00 pm-1:30 pm

Nonstop10h 30m

London Heathrow

Tue 1/20

6:35 am-3:15 pm

1 stop16h 40m

$613

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 1/7

7:00 pm-1:30 pm

Nonstop10h 30m

London Heathrow

Sun 1/11

1:45 pm-4:35 pm

1 stop34h 50m

$614

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/29

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 24, 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 $251). 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 30, 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.

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 30, 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
7.9
Good
7,993 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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
7.9
Good
7,993 reviews
Delta
7.9
Good
7,993 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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
11,032 reviews
Delta
7.9
Good
7,993 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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
7.9
Good
7,993 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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
3,001 reviews
Delta
7.9
Good
7,993 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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
7,487 reviews
Delta
7.9
Good
7,993 reviews

Boarding

8.2

Crew

8.5

Overall

7.9

Comfort

7.9

Food

7.3

Entertainment

7.9

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 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 $3,109, our data indicates the cheapest price to be $329. The most popular route (Los Angeles - London Heathrow), is priced around $409.

  • 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 $251). 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
Hounslow
Ilford
Hayes
Southend-on-Sea
Harrow
Croydon
Eastleigh
Dartford
Dover
Winchester
Orpington
Gatwick
Borehamwood
Aylesbury
Bedford
Chipping Norton
Wembley
Folkestone
Eastbourne
Sutton

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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 30, 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$359Average$680FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$397Average$893FlexibilityNo cancel feeOn-time76%
Scandinavian AirlinesCheapest$419Average$594FlexibilityNo cancel feeOn-time77%
TAP AIR PORTUGALCheapest$427Average$628FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$476Average$691FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$487Average$703FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$498Average$870FlexibilityNo cancel feeOn-time70%

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