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$177+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LON
Oct 11 — Oct 181
Sat 10/11
Sat 10/18
1 adult, Economy
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Cheapflights Tip: The best prices from Pasadena to London are usually found in August or September, 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 11, 2025.

Round-trip from

$499
(Mytrip)

One-way from

$177
(FlightHub)

Popular in

December

Cheapest in

August

Average price

$622
From Pasadena to London (LON)
Search Deals
One-way flight from Pasadena to London (LON)
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($92 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($24 potential savings vs. average RT price).
Search Deals
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 11, 2025.

This Mytrip deal was found by Cheapflights users on 9/10. 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 10/104:30 pmLAX - LGW
Nonstop10h 25mMultiple Airlines
Wed 10/228:50 pmLGW - LAX
2 stops26h 40mMultiple Airlines
Deal found 9/10$499
This Kiwi.com deal was found by Cheapflights users on 9/11. 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.
Sat 11/294:45 pmLAX - LHR
1 stop21h 55mTAP AIR PORTUGAL
Sat 12/66:00 amLHR - LAX
1 stop17h 00mTAP AIR PORTUGAL
Deal found 9/11$500
This FlightHub deal was found by Cheapflights users on 9/9. 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.
Tue 12/304:45 pmLAX - LGW
1 stop33h 05mTAP AIR PORTUGAL
Mon 1/124:35 pmLGW - LAX
1 stop30h 25mTAP AIR PORTUGAL
Deal found 9/9$500
This Norse Atlantic Airways deal was found by Cheapflights users on 9/9. 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 10/154:30 pmLAX - LGW
Nonstop10h 25mNorse Atlantic UK
Wed 10/2210:55 amLGW - LAX
Nonstop11h 15mNorse Atlantic UK
Deal found 9/9$501
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/11. 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 stop17h 05mTAP AIR PORTUGAL
Fri 10/316:30 pmLHR - LAX
1 stop28h 30mTAP AIR PORTUGAL
Deal found 9/11$502
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/104:30 pmLAX - LGW
Nonstop10h 25mMultiple Airlines
Wed 10/159:50 pmLGW - LAX
2 stops28h 15mMultiple Airlines
Deal found 9/9$503
This CheapOair deal was found by Cheapflights users on 9/11. 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.
Wed 10/14:30 pmLAX - LGW
Nonstop10h 25mNorse Atlantic UK
Wed 10/1510:55 amLGW - LAX
Nonstop11h 15mNorse Atlantic UK
Deal found 9/11$504
This Kiwi.com deal was found by Cheapflights users on 9/11. 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 12/44:45 pmLAX - LHR
1 stop18h 10mTAP AIR PORTUGAL
Mon 12/158:15 amLHR - LAX
1 stop38h 45mTAP AIR PORTUGAL
Deal found 9/11$505
This TAP AIR PORTUGAL deal was found by Cheapflights users on 9/11. 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 9/11$505
This Kiwi.com deal was found by Cheapflights users on 9/10. 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 9/214:30 pmLAX - LGW
Nonstop10h 25mNorse Atlantic UK
Sat 9/279:50 amLGW - LAX
Nonstop11h 15mNorse Atlantic UK
Deal found 9/10$507
This Gurufare deal was found by Cheapflights users on 9/10. 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.
Thu 12/114:45 pmLAX - LHR
1 stop34h 40mTAP AIR PORTUGAL
Mon 12/296:30 pmLHR - LAX
1 stop28h 30mTAP AIR PORTUGAL
Deal found 9/10$508
This Kiwi.com deal was found by Cheapflights users on 9/9. 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 10/104:30 pmLAX - LGW
Nonstop10h 25mNorse Atlantic UK
Fri 10/2410:55 amLGW - LAX
Nonstop11h 15mNorse Atlantic UK
Deal found 9/9$508

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 11, 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 - LTN

LAXLTN

Los Angeles

Sat 11/15

10:30 pm-8:30 am

1 stop26h 00m

London Luton

Thu 11/20

9:50 pm-3:15 pm

1 stop25h 25m

$544

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Tue 10/7

4:40 pm-11:10 am

Nonstop10h 30m

London Heathrow

Tue 10/14

8:45 am-4:30 pm

1 stop15h 45m

$554

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Sun 2/8

12:34 pm-9:40 am

1 stop13h 06m

London Heathrow

Tue 2/17

10:20 am-5:05 pm

1 stop14h 45m

$561

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Thu 11/6

1:12 pm-6:30 pm

2 stops21h 18m

London Heathrow

Thu 11/13

10:20 am-5:00 pm

1 stop14h 40m

$561

Los AngelesLondon

LAX - STN

LAXSTN

Los Angeles

Wed 10/22

7:30 am-12:40 pm

2 stops21h 10m

London Stansted

Mon 11/3

7:40 pm-4:35 pm

2 stops28h 55m

$562

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 12/3

7:30 pm-9:20 pm

2 stops41h 50m

London Heathrow

Sat 12/6

5:30 pm-5:00 pm

2 stops31h 30m

$567

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 10/8

4:40 pm-11:10 am

Nonstop10h 30m

London Heathrow

Tue 10/14

1:05 pm-4:15 pm

Nonstop11h 10m

$572

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Wed 10/15

4:40 pm-11:10 am

Nonstop10h 30m

London Heathrow

Tue 10/21

1:05 pm-4:15 pm

Nonstop11h 10m

$572

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Sun 10/26

8:00 pm-1:30 pm

Nonstop10h 30m

London Heathrow

Fri 11/7

3:20 pm-6:45 pm

Nonstop11h 25m

$572

Los AngelesLondon

LAX - LHR

LAXLHR

Los Angeles

Tue 10/7

4:40 pm-11:10 am

Nonstop10h 30m

London Heathrow

Thu 10/30

3:20 pm-7:45 pm

Nonstop11h 25m

$572

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/9

Showing 1-10 of 60 results
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2
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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

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 August 29, 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 $1,098). 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 11, 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 11, 2025.

The most flights from P4S to LON are scheduled on a Wednesday (57 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (41 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 September 11, 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
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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
7,960 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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
2,929 reviews
Delta
8.0
Very good
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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
7,960 reviews

Entertainment

7.9

Food

7.3

Overall

8.0

Comfort

7.9

Boarding

8.2

Crew

8.5

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 $186 and $308 on TAP AIR PORTUGAL and LEVEL, 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 $3,099, our data indicates the cheapest price to be $347. The most popular route (Los Angeles - London Heathrow), is priced around $473.

  • 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 $1,098). 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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Thornton Heath
Southend-on-Sea
Harrow
Canterbury
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Eastleigh
Dartford
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Winchester
Orpington
Gatwick
Borehamwood
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Bedford
Wembley
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Chichester
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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 11, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$272Average$1,046FlexibilityNo cancel feeOn-time60%
JetBlueCheapest$273Average$795FlexibilityNo cancel feeOn-time62%
SWISSCheapest$336Average$910FlexibilityNo cancel feeOn-time79%
Norse Atlantic UKCheapest$352Average$680FlexibilityNo cancel feeOn-timeN/A
LufthansaCheapest$363Average$778FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$375Average$660FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$419Average$594FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$469Average$892FlexibilityNo cancel feeOn-time72%
Aer LingusCheapest$475Average$724FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$492Average$705FlexibilityNo cancel feeOn-time76%

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