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$330+ 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 5/2. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LON
Apr 21 — Apr 281
Tue 4/21
Tue 4/28
1 adult, Economy
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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 Tuesday 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 March 22, 2026.

This iWofly deal was found by Cheapflights users on 3/18. 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 iWofly is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:30 pm
LAX
-
LHR
1 stop15h 00m
Scandinavian Airlines
Wed 11/187:05 am
LHR
-
LAX
2 stops17h 55m
Scandinavian Airlines
Deal found 3/18$623
This Cheapflightsfares deal was found by Cheapflights users on 3/18. 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.
Tue 10/207:10 pm
LAX
-
LHR
1 stop15h 20m
Scandinavian Airlines
Tue 11/310:20 am
LHR
-
LAX
1 stop14h 40m
Scandinavian Airlines
Deal found 3/18$624
This Norse Atlantic Airways deal was found by Cheapflights users on 3/17. 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 Atlantic Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:30 pm
LAX
-
LGW
Nonstop10h 25m
Norse Atlantic UK
Fri 9/1110:20 am
LGW
-
LAX
Nonstop11h 15m
Norse Atlantic UK
Deal found 3/17$624
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/34:30 pm
LAX
-
LGW
Nonstop10h 25m
Norse Atlantic UK
Mon 9/2810:05 am
LGW
-
LAX
Nonstop11h 15m
Norse Atlantic UK
Deal found 3/18$628
This Cheapflightsfares deal was found by Cheapflights users on 3/17. 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.
Tue 10/67:10 pm
LAX
-
LHR
2 stops16h 45m
Scandinavian Airlines
Tue 10/1310:20 am
LHR
-
LAX
1 stop14h 30m
Scandinavian Airlines
Deal found 3/17$629
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/304:30 pm
LAX
-
LGW
Nonstop10h 25m
Multiple Airlines
Tue 9/159:25 am
LGW
-
LAX
1 stop15h 05m
Multiple Airlines
Deal found 3/18$629
This Cheapflightsfares deal was found by Cheapflights users on 3/18. 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.
Thu 10/87:10 pm
LAX
-
LHR
2 stops16h 45m
Scandinavian Airlines
Wed 10/2810:20 am
LHR
-
LAX
1 stop14h 40m
Scandinavian Airlines
Deal found 3/18$630
This Norse Atlantic Airways deal was found by Cheapflights users on 3/18. 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 Norse Atlantic Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/274:30 pm
LAX
-
LGW
Nonstop10h 25m
Norse Atlantic UK
Thu 8/1310:20 am
LGW
-
LAX
Nonstop11h 15m
Norse Atlantic UK
Deal found 3/18$630
This Kiwi.com deal was found by Cheapflights users on 3/18. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 7/314:30 pm
LAX
-
LGW
Nonstop10h 25m
Multiple Airlines
Wed 9/99:20 am
LGW
-
LAX
1 stop15h 10m
Multiple Airlines
Deal found 3/18$631
This SmartFares deal was found by Cheapflights users on 3/17. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/147:10 pm
LAX
-
LHR
2 stops18h 25m
Scandinavian Airlines
Tue 9/2210:20 am
LHR
-
LAX
1 stop14h 30m
Scandinavian Airlines
Deal found 3/17$632
This FlightHub deal was found by Cheapflights users on 3/17. 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.
Sun 4/267:10 pm
LAX
-
LHR
1 stop15h 20m
Scandinavian Airlines
Sun 5/37:30 pm
LHR
-
LAX
1 stop29h 20m
Scandinavian Airlines
Deal found 3/17$633
This FlightHub deal was found by Cheapflights users on 3/18. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/77:10 pm
LAX
-
LHR
1 stop14h 30m
Scandinavian Airlines
Wed 10/2810:20 am
LHR
-
LAX
1 stop14h 40m
Scandinavian Airlines
Deal found 3/18$634

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 March 22, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$624
(Norse Atlantic Airways)

One-way from

$330
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$708
Provider with most accurate pricing for Los Angeles Los Angeles-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles Los Angeles-London (LON) flights.
Search Deals
From Pasadena to London (LON)
Search Deals
One-way flight from Pasadena to London (LON)
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($113 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search 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 March 22, 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 - LGW

LAXLGW

Los Angeles Los Angeles

Tue 4/14

4:45 pm-9:45 am

1 stop33h 00m

London Gatwick

Thu 4/30

9:20 pm-2:35 pm

2 stops25h 15m

$637

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles Los Angeles

Tue 4/28

8:10 pm-4:40 pm

1 stop36h 30m

London Stansted

Tue 5/5

6:55 am-11:40 am

1 stop36h 45m

$747

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles Los Angeles

Mon 4/6

8:10 pm-10:10 pm

1 stop18h 00m

London Stansted

Thu 4/16

5:35 pm-11:40 am

1 stop26h 05m

$757

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles Los Angeles

Mon 4/13

8:10 pm-9:55 am

1 stop29h 45m

London Stansted

Mon 4/27

10:50 am-11:40 am

1 stop32h 50m

$797

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles Los Angeles

Mon 9/14

8:10 pm-9:55 am

1 stop29h 45m

London Stansted

Tue 9/22

6:55 am-6:15 pm

1 stop19h 20m

$805

Los AngelesLondon

LAX - LTN

LAXLTN

Los Angeles Los Angeles

Mon 8/17

10:00 am-10:25 am

1 stop16h 25m

London Luton

Mon 8/31

7:40 pm-10:00 am

1 stop22h 20m

$822

Los AngelesLondon

LAX - LGW

LAXLGW

Los Angeles Los Angeles

Tue 3/31

6:00 pm-4:00 pm

1 stop14h 00m

London Gatwick

Wed 4/8

10:25 am-6:35 pm

1 stop16h 10m

$838

Los AngelesLondon

LAX - SEN

LAXSEN

Los Angeles Los Angeles

Sat 9/12

1:00 am-10:30 am

1 stop25h 30m

London Southend

Mon 9/21

11:10 am-10:00 am

1 stop30h 50m

$841

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles Los Angeles

Fri 9/11

8:10 pm-10:10 pm

1 stop18h 00m

London Stansted

Wed 9/23

5:45 pm-11:40 am

1 stop25h 55m

$845

Los AngelesLondon

LAX - LTN

LAXLTN

Los Angeles Los Angeles

Thu 9/17

6:20 pm-12:55 pm

1 stop34h 35m

London Luton

Tue 10/6

7:10 pm-12:00 pm

1 stop24h 50m

$854

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/19

Showing 1-10 of 60 resultsSorted by cheapest first
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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 March 13, 2026.

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 $222). Flying from Pasadena to London in June is currently the most expensive (average of $560). 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 March 22, 2026.

It’s optimal to fly from Pasadena to London in the afternoon. By choosing this option you can save up to 33% on the cost of your flight, compared to a flight in the morning.

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 March 14, 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.

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 March 22, 2026.

The most flights from P4S to LON are scheduled on a Monday (45 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (45 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 March 22, 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.
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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
8,315 reviews
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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.
United Airlines
7.4
Good
9,456 reviews
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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
7.3
Good
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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
7.1
Good
11,490 reviews
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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
7,807 reviews
Delta
7.9
Good
8,315 reviews

Comfort

7.9

Crew

8.5

Food

7.2

Entertainment

7.8

Boarding

8.1

Overall

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 14h. Airlines will cover a distance of 5463 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 $139. Users have also found prices from $168 and $230 on TAP AIR PORTUGAL and WestJet, respectively.

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

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

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

    Consider Air Canada (86%), Austrian Airlines (86%) or United Airlines (86%) 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 $3,130, our data indicates the cheapest price to be $275. The most popular route (Los Angeles Los Angeles - London Heathrow), is priced around $517.

  • 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 $222). Flying from Pasadena to London in June is currently the most expensive (average of $560). 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
Ilford
Hounslow
Croydon
Gatwick
Southend-on-Sea
Harrow
Eastleigh
Dartford
Dover
Winchester
Orpington
Watford
Borehamwood
Aylesbury
Chipping Norton
Hayes
Kingston upon Thames
Eastbourne
Sutton
Slough

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 March 22, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$262Average$823FlexibilityNo cancel feeOn-time62%
Brussels AirlinesCheapest$291Average$821FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$300Average$758FlexibilityNo cancel feeOn-time79%
Norse Atlantic UKCheapest$343Average$698FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$420Average$536FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$474Average$632FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$480Average$669FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$484Average$1,071FlexibilityNo cancel feeOn-time78%
FinnairCheapest$486Average$715FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$498Average$768FlexibilityNo cancel feeOn-time70%

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