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Cheap flights from Portsmouth to Pasadena from £342

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 15/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
7 Sep — 14 Sep1
1 adult

Cheap flight deals from Portsmouth to Pasadena

Keep the following information in mind while searching for Portsmouth to Pasadena flight deals. Data was last updated 2 September 2025.

Round-trip from

£498

One-way from

£342

Popular in

July

Cheapest in

February

Average price

£851
KLM
  • KLM
  • 15/10-22/10
  • 2 total stops
  • 61h 10m total
  • Portsmouth to Pasadena
Search Deals
15/9
  • 15/9
  • 3 total stops
  • 56h 26m total
  • Portsmouth to Pasadena
Search Deals
Highest demand for flights based on searches. 28% potential increase in price (£228 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (£52 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Portsmouth to Pasadena

Cheapest flights from Portsmouth to Pasadena
Explore the most affordable flight options available from Portsmouth to Pasadena. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 2 September 2025.

Mon 8/909:20SOU - LAX
1 stop34h 30mKLM
Sun 14/913:50LAX - SOU
1 stop34h 55mKLM
Deal found 1/9£476
Sun 7/909:20SOU - LAX
1 stop34h 30mKLM
Sun 14/916:50LAX - SOU
1 stop31h 55mKLM
Deal found 31/8£481
Wed 15/1009:20SOU - LAX
2 stops15h 56mKLM
Wed 22/1016:50LAX - SOU
1 stop16h 10mKLM
Deal found 31/8£498
Sun 14/918:25SOU - LAX
1 stop28h 25mDelta
Tue 30/916:45LAX - SOU
1 stop16h 15mDelta
Deal found 31/8£503
Mon 8/920:00SOU - LAX
2 stops28h 05mMultiple Airlines
Sun 14/921:35LAX - SOU
2 stops26h 40mMultiple Airlines
Deal found 1/9£638
Fri 19/909:20SOU - LAX
1 stop13h 30mDelta
Wed 1/1016:50LAX - SOU
1 stop16h 10mDelta
Deal found 31/8£655
Sun 7/918:25SOU - LAX
2 stops34h 04mMultiple Airlines
Sun 14/915:25LAX - SOU
2 stops33h 20mMultiple Airlines
Deal found 31/8£672
Thu 9/1009:40SOU - LAX
1 stop16h 45mBritish Airways
Thu 23/1020:15LAX - SOU
1 stop15h 15mBritish Airways
Deal found 1/9£697
Wed 17/920:00SOU - LAX
1 stop30h 25mBritish Airways
Fri 26/920:15LAX - SOU
1 stop28h 20mBritish Airways
Deal found 31/8£703
Tue 16/920:00SOU - LAX
1 stop30h 25mBritish Airways
Fri 26/920:15LAX - SOU
1 stop28h 20mBritish Airways
Deal found 31/8£712

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portsmouth to Pasadena 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 858,174 searches. Data last updated 2 September 2025.
Use the filters below to find and compare flights from Portsmouth to Pasadena that are best for you.

Fly from

Portsmouth

Fly to

Pasadena

Route

Depart

Return

Price

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Wed 15/10

17:35-14:50

1 stop29h 15m

Los Angeles

Wed 22/10

16:50-08:45

1 stop31h 55m

£498

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sat 20/9

09:20-14:50

1 stop13h 30m

Los Angeles

Wed 1/10

07:15-17:00

2 stops25h 45m

£503

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sat 20/9

09:20-14:50

1 stop13h 30m

Los Angeles

Mon 29/9

09:05-17:00

2 stops23h 55m

£503

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Mon 15/9

17:35-11:50

1 stop26h 15m

Los Angeles

Thu 2/10

07:00-08:45

2 stops17h 45m

£503

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Tue 16/9

17:35-11:50

1 stop26h 15m

Los Angeles

Fri 3/10

16:45-17:30

1 stop16h 45m

£503

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Mon 15/9

17:35-11:50

1 stop26h 15m

Los Angeles

Wed 1/10

09:55-17:00

2 stops23h 05m

£503

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sat 20/9

09:20-14:50

1 stop13h 30m

Los Angeles

Tue 30/9

07:00-08:45

2 stops17h 45m

£503

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Wed 17/9

09:20-14:50

1 stop13h 30m

Los Angeles

Tue 30/9

16:45-17:00

1 stop16h 15m

£503

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sat 13/9

09:20-14:50

1 stop13h 30m

Los Angeles

Tue 30/9

16:45-17:00

1 stop16h 15m

£503

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Mon 15/9

17:35-11:50

1 stop26h 15m

Los Angeles

Mon 29/9

16:50-17:00

1 stop16h 10m

£503

Flights are sorted by cheapest return flights first.

Deals found on 1/9

Showing 1-10 of 17 results
1
2

Best time to book a flight from Portsmouth to Pasadena

Have a flexible travel schedule? Discover the best time to fly to Pasadena from Portsmouth with our price prediction graph.
Estimated return 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 Portsmouth to Pasadena

What is the cheapest month to book a flight from Portsmouth to Pasadena?

Currently, January is the cheapest month in which you can book a flight from Portsmouth to Pasadena (average of £575). Flying from Portsmouth to Pasadena in July is currently the most expensive (average of £811). 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 P0R to P4S?

Find hourly flight availability from Portsmouth to Pasadena. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 2 September 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Portsmouth to Pasadena as you normally would.

What is the cheapest day to fly from Portsmouth to Pasadena?

Use this chart to determine the cheapest time to fly return from Portsmouth to Pasadena. Price data was last updated on 29 September 2024.

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

Weekly flight availability from Portsmouth to Pasadena

Explore weekly flight availability from Portsmouth to Pasadena. 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 2 September 2025.

The most flights from P0R to P4S are scheduled on a Saturday (54 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (53 on average).

Reviews of airlines servicing Pasadena

Get insights into the airlines that provide service to Pasadena. 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 Pasadena. Reviews last updated 2 September 2025.
See what other customers who have flown with British Airways from Portsmouth to Pasadena have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
British Airways
6.7
Okay
7,336 reviews
Check prices

Comfort

6.7

Food

6.3

Overall

6.7

Entertainment

6.4

Boarding

6.9

Crew

7.6

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.
British Airways
6.7
Okay
7,336 reviews
British Airways
6.7
Okay
7,336 reviews
Check prices

Comfort

6.7

Food

6.3

Overall

6.7

Entertainment

6.4

Boarding

6.9

Crew

7.6

Reviews

1 / 20
6.0
Good

Anonymous,May 2025

LHR - LAX

We needed assistance (wheelchair, golf cart, whatever ) to get to next gate. We requested it. None was provided.

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Pasadena. 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 Portsmouth to Pasadena?

    KLM and Delta can get you from Portsmouth to Pasadena in just under 13h 30m. Your travel time can differ by up to 15h 45m. The distance from Portsmouth to Pasadena is about 5434 mi. This flight may include one or multiple stops.

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

    No one likes to see their flight delayed. When booking a flight from Portsmouth to Pasadena consider choosing Aeromexico (86%), KLM (82%) or Air France (82%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Portsmouth to Pasadena?

    On average you can expect to pay £2,686 for a flight from Portsmouth to Pasadena. The cheapest flight overall is £395 while the most popular route, (Southampton Eastleigh - Los Angeles) is currently priced at £476.

  • Can I find deals for flights from Portsmouth to Pasadena that include hotel bookings?

    Yes. In addition to deals on Portsmouth to Pasadena flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to Pasadena?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Pasadena.

  • Can I find deals for business class flights from Portsmouth to Pasadena?

    Yes. Cheapflights offers flight deals from Portsmouth to Pasadena 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 Portsmouth to Pasadena?

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to Pasadena (average of £575). Flying from Portsmouth to Pasadena in July is currently the most expensive (average of £811). 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

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Alternative routes for Portsmouth to Pasadena

See prices for flight routes from nearby airports that may be better suited for you.
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Top 10 airlines flying from Portsmouth to Pasadena

Discover the top 10 airlines that operate flights from Portsmouth to Pasadena. 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 858,174 searches. Data last updated 2 September 2025.
AirlineCheapestAverageFlexibilityOn-time
FinnairCheapest£277Average£465FlexibilityNo cancel feeOn-time76%
Search Finnair flights
SWISSCheapest£289Average£493FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Norse Atlantic UKCheapest£294Average£515FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Aer LingusCheapest£333Average£584FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
DeltaCheapest£333Average£531FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
KLMCheapest£343Average£546FlexibilityNo cancel feeOn-time75%
Search KLM flights
Scandinavian AirlinesCheapest£344Average£479FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Air FranceCheapest£351Average£456FlexibilityNo cancel feeOn-time77%
Search Air France flights
Brussels AirlinesCheapest£351Average£471FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Austrian AirlinesCheapest£354Average£469FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights

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