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$489+ Cheap flights from Pasadena, CA to Portsmouth, England

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 1/13. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Dec 3 — Dec 101
Wed 12/3
Wed 12/10
1 adult, Economy
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Cheap flight deals from Pasadena to Portsmouth

Keep the following information in mind while searching for Pasadena to Portsmouth flight deals. Data was last updated November 3, 2025.

Most accurate provider

Gotogate
3 stars

Most trusted provider

Gotogate
3 stars

Round-trip from

$747
(Delta)

One-way from

$489
(Delta)

Popular in

January

Cheapest in

April

Average price

$1,191
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 Portsmouth
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One-way flight from Pasadena to Portsmouth
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Highest demand for flights based on searches. 19% potential increase in price ($291 potential increase over avg. RT price).
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Cheapest flight prices on average. 9% potential price decrease ($101 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Pasadena to Portsmouth

Cheapest flights from Pasadena to Portsmouth
Explore the most affordable flight options available from Pasadena to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 3, 2025.

This Delta deal was found by Cheapflights users on 11/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:45 pmLAX - SOU
1 stop19h 40mDelta
Thu 12/118:50 amSOU - LAX
2 stops24h 20mDelta
Deal found 11/2$749
This Delta deal was found by Cheapflights users on 11/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1511:05 amLAX - SOU
2 stops22h 20mDelta
Thu 11/278:50 amSOU - LAX
2 stops18h 23mDelta
Deal found 11/2$853
This KLM deal was found by Cheapflights users on 11/2. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 12/71:45 pmLAX - SOU
1 stop19h 40mKLM
Sun 12/146:05 pmSOU - LAX
1 stop25h 40mKLM
Deal found 11/2$891
This KAYAK deal was found by Cheapflights users on 11/2. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:15 pmLAX - SOU
1 stop15h 25mAer Lingus
Thu 12/114:05 pmSOU - LAX
1 stop34h 25mAer Lingus
Deal found 11/2$995
This Ovago deal was found by Cheapflights users on 11/2. 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 Ovago is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/158:15 pmLAX - SOU
1 stop28h 30mAer Lingus
Thu 11/274:05 pmSOU - LAX
1 stop34h 25mAer Lingus
Deal found 11/2$1,070
This Expedia deal was found by Cheapflights users on 11/2. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/1412:55 amLAX - SOU
2 stops23h 50mMultiple Airlines
Thu 11/279:30 amSOU - LAX
2 stops29h 57mMultiple Airlines
Deal found 11/2$1,226
This KAYAK deal was found by Cheapflights users on 11/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/218:15 pmLAX - SOU
1 stop28h 30mAer Lingus
Thu 11/278:10 pmSOU - LAX
1 stop30h 20mAer Lingus
Deal found 11/1$1,345
This British Airways deal was found by Cheapflights users on 11/2. 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 British Airways is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/39:00 pmLAX - SOU
2 stops30h 50mBritish Airways
Fri 12/129:30 amSOU - LAX
1 stop17h 00mBritish Airways
Deal found 11/2$1,438

Cheapflights Fare Finder

 
Customize your flight search to find flights from Pasadena to Portsmouth 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 November 3, 2025.
Use the filters below to find and compare flights from Pasadena to Portsmouth that are best for you.

Fly from

Pasadena

Fly to

Portsmouth

Route

Depart

Return

Price

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 1/13

1:45 pm-5:05 pm

1 stop19h 20m

Southampton Eastleigh

Sun 1/25

5:45 pm-11:45 am

1 stop26h 00m

$747

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Thu 1/15

1:45 pm-5:05 pm

1 stop19h 20m

Southampton Eastleigh

Wed 1/21

5:35 pm-11:45 am

1 stop26h 10m

$747

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 1/14

1:45 pm-5:05 pm

1 stop19h 20m

Southampton Eastleigh

Thu 1/22

5:35 pm-11:45 am

1 stop26h 10m

$747

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 1/13

1:45 pm-5:05 pm

1 stop19h 20m

Southampton Eastleigh

Wed 1/21

5:35 pm-11:45 am

1 stop26h 10m

$747

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 1/14

1:45 pm-5:05 pm

1 stop19h 20m

Southampton Eastleigh

Sun 1/25

5:45 pm-11:45 am

1 stop26h 00m

$747

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Thu 1/15

1:45 pm-5:05 pm

1 stop19h 20m

Southampton Eastleigh

Sat 1/24

9:25 am-11:45 am

1 stop34h 20m

$747

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Thu 12/4

1:45 pm-5:00 pm

1 stop19h 15m

Southampton Eastleigh

Thu 12/11

8:50 am-9:32 pm

2 stops20h 42m

$749

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 1/11

11:55 pm-8:50 am

2 stops24h 55m

Southampton Eastleigh

Fri 1/23

9:00 am-11:45 am

1 stop34h 45m

$752

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Mon 1/12

11:35 am-5:05 pm

2 stops21h 30m

Southampton Eastleigh

Thu 1/22

9:00 am-11:45 am

1 stop34h 45m

$752

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Mon 1/12

9:55 pm-8:50 am

2 stops26h 55m

Southampton Eastleigh

Sun 1/25

5:45 pm-11:45 am

1 stop26h 00m

$752

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 19 results
1
2

Best time to book a flight from Pasadena to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth 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 Portsmouth

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

Currently, October is the cheapest month in which you can book a flight from Pasadena to Portsmouth (average of $251). Flying from Pasadena to Portsmouth 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 P0R?

Find hourly flight availability from Pasadena to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 3, 2025.

It’s optimal to fly from Pasadena to Portsmouth in the afternoon. By choosing this option you can save up to 19% on the cost of your flight, compared to a flight at noon.

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

Use this chart to determine the cheapest time to fly round-trip from Pasadena to Portsmouth. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Pasadena to Portsmouth 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.

Weekly flight availability from Pasadena to Portsmouth

Explore weekly flight availability from Pasadena to Portsmouth. 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 November 3, 2025.

The most flights from P4S to P0R are scheduled on a Sunday (46 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (43 on average).

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. 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 Portsmouth. Reviews last updated November 3, 2025.
See what other customers who have flown with Delta, KLM, and Virgin Atlantic from Pasadena to Portsmouth have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.2

Crew

8.5

Comfort

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
8,001 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.2

Crew

8.5

Comfort

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.
KLM
7.7
Good
1,404 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.2

Crew

8.5

Comfort

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.
Virgin Atlantic
7.5
Good
671 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.2

Crew

8.5

Comfort

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.
Aer Lingus
7.2
Good
1,365 reviews
Delta
7.9
Good
8,001 reviews

Entertainment

7.9

Food

7.3

Overall

7.9

Boarding

8.2

Crew

8.5

Comfort

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 Portsmouth. 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 Portsmouth?

    Delta can get you from Pasadena to Portsmouth in just under 19h 20m. Your travel time can differ by up to . There are 5434 mi between Pasadena and Portsmouth.

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

    Consider Air France (93%), Delta (93%) or Virgin Atlantic (93%) when booking your flight. These represent the most reliable airlines when flying from Pasadena to Portsmouth.

  • What are the cheapest flights from Pasadena to Portsmouth?

    Looking at all options, your cheapest flight can be booked for $329. While the most popular route (Los Angeles - Southampton Eastleigh) can be booked for $749 on average, our data indicates $3,109 when flying from Pasadena to Portsmouth.

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

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

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

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

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

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

    Currently, October is the cheapest month in which you can book a flight from Pasadena to Portsmouth (average of $251). Flying from Pasadena to Portsmouth 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.

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Alternative routes for Pasadena to Portsmouth

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Top 10 airlines flying from Pasadena to Portsmouth

Discover the top 10 airlines that operate flights from Pasadena to Portsmouth. 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 November 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$272Average$1,046FlexibilityNo cancel feeOn-time60%
JetBlueCheapest$273Average$800FlexibilityNo cancel feeOn-time62%
SWISSCheapest$336Average$922FlexibilityNo cancel feeOn-time79%
Norse Atlantic UKCheapest$359Average$682FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$419Average$597FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$427Average$910FlexibilityNo cancel feeOn-time76%
TAP AIR PORTUGALCheapest$427Average$625FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$476Average$957FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$486Average$700FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$498Average$862FlexibilityNo cancel feeOn-time70%

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