HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
Portsmouth

$417+ 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 6/4. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Apr 27 — May 41
Sun 4/27
Sun 5/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Pasadena to Portsmouth with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

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 April 22, 2025.

Most accurate provider

AranGrant
3 stars

Most trusted provider

AranGrant
3 stars

Round-trip from

$924
(Delta)

One-way from

$417
(Kiwi.com)

Popular in

June

Cheapest in

February

Average price

$860
Provider with most accurate pricing for Los Angeles-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles-London (LON) flights.
Search Deals
From Pasadena to Portsmouth
Search Deals
One-way flight from Pasadena to Portsmouth
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($168 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2025
Search Deals

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 April 22, 2025.

This Delta deal was found by Cheapflights users on 4/20. 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.
Sun 9/144:50 pmLAX - SOU
1 stop16h 10mDelta
Wed 9/249:20 amSOU - LAX
1 stop13h 30mDelta
Deal found 4/20$829
This KLM deal was found by Cheapflights users on 4/22. 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.
Fri 9/51:50 pmLAX - SOU
1 stop34h 55mKLM
Sun 9/146:25 pmSOU - LAX
1 stop28h 25mKLM
Deal found 4/22$930
This Mytrip deal was found by Cheapflights users on 4/22. 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 7/234:30 pmLAX - SOU
2 stops19h 00mMultiple Airlines
Sun 8/38:00 pmSOU - LAX
3 stops46h 53mMultiple Airlines
Deal found 4/22$976
This Cheapflightsfares deal was found by Cheapflights users on 4/22. 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.
Sat 9/2011:59 pmLAX - SOU
2 stops25h 11mAer Lingus
Sun 9/289:10 amSOU - LAX
1 stop17h 15mAer Lingus
Deal found 4/22$1,033
This British Airways deal was found by Cheapflights users on 4/21. 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.
Thu 7/313:40 pmLAX - SOU
2 stops16h 35mBritish Airways
Tue 8/128:00 pmSOU - LAX
1 stop30h 25mBritish Airways
Deal found 4/21$1,519

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 April 22, 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

Sun 7/20

4:50 pm-5:50 pm

1 stop17h 00m

Southampton Eastleigh

Tue 8/12

6:25 pm-11:50 am

1 stop25h 25m

$924

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 5/4

8:15 pm-7:30 pm

1 stop15h 15m

Southampton Eastleigh

Fri 5/16

9:40 am-6:25 pm

1 stop16h 45m

$1,235

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 5/6

3:40 pm-4:00 pm

2 stops16h 20m

Southampton Eastleigh

Thu 5/22

9:40 am-6:25 pm

1 stop16h 45m

$2,278

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 6/4

6:05 pm-7:30 pm

3 stops41h 25m

$417

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 5/4

1:50 pm-8:50 am

1 stop35h 00m

$625

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 5/20

1:50 pm-5:00 pm

1 stop19h 10m

$664

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 6/4

8:15 pm-7:30 pm

1 stop15h 15m

$723

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

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, November is the cheapest month in which you can book a flight from Pasadena to Portsmouth (average of $661). Flying from Pasadena to Portsmouth in June is currently the most expensive (average of $1,110). 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 April 22, 2025.

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

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 Tuesday evenings when fares are most often at their lowest. Thursday afternoons 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 April 22, 2025.

The most flights from P4S to P0R are scheduled on a Monday (58 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (43 on average).

Rainfall in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Portsmouth ranges from 1.0 - 3.0 inches per month. December is typically the wettest month, when rainfall can reach 3.0 in. July is typically the driest time to visit Portsmouth when rainfall is around 1.0 in.

Temperature in Portsmouth by month

Plan your trip to Portsmouth by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Portsmouth, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 64.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 39.2 F).

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 April 22, 2025.
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

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
8.0
Very good
7,920 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

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.
KLM
7.8
Good
1,331 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

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.
Aer Lingus
7.0
Good
1,067 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

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
6.6
Okay
6,794 reviews
Delta
8.0
Very good
7,920 reviews

Crew

8.5

Food

7.3

Overall

8.0

Boarding

8.2

Comfort

7.9

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 Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What are the cheapest airlines to fly from Pasadena to Portsmouth one-way?

    The cheapest airlines for a one-way flight from Pasadena to Portsmouth are KLM ($625), Delta ($664), and Aer Lingus ($723).

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

    Consider Air Canada (83%), Austrian Airlines (83%) or United Airlines (83%) 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 $395. While the most popular route (Los Angeles - Southampton Eastleigh) can be booked for $721 on average our data indicates $2,469 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, November is the cheapest month in which you can book a flight from Pasadena to Portsmouth (average of $661). Flying from Pasadena to Portsmouth in June is currently the most expensive (average of $1,110). 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

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Pasadena to Portsmouth

See prices for flight routes from nearby airports that may be better suited for you.
Los Angeles to Heathrow flights
San Francisco to Heathrow flights
Los Angeles to London City flights
San Francisco to Gatwick flights
San Francisco to London City flights
Los Angeles to Gatwick flights
San Diego to Heathrow flights
Los Angeles to Luton flights
Ontario to Heathrow flights
Las Vegas to Heathrow flights
Los Angeles to Stansted flights
San Diego to Gatwick flights
San Diego to London City flights
Los Angeles to Edinburgh flights
San Francisco to Stansted flights
San Francisco to Edinburgh flights
Las Vegas to Gatwick flights
San Jose to Heathrow flights
Las Vegas to London City flights
Sacramento to Heathrow flights
San Francisco to Luton flights
Santa Ana to Heathrow flights
Los Angeles to Southend flights
Oakland to Heathrow flights
San Diego to Edinburgh flights
San Francisco to Manchester flights
Los Angeles to Manchester flights
San Jose to Gatwick flights
Reno to Heathrow flights
Sacramento to Gatwick flights
Sacramento to London City flights
Reno to Gatwick flights
San Francisco to Southampton flights
San Jose to Edinburgh flights
Burbank to Heathrow flights
San Francisco to Birmingham flights
Oakland to Gatwick flights
Palm Springs to Heathrow flights
Ontario to Edinburgh flights
Santa Rosa to Heathrow flights
Las Vegas to Edinburgh flights
Reno to London City flights
Sacramento to Edinburgh flights
Long Beach to Heathrow flights
Ontario to Gatwick flights
Ontario to Manchester flights
Fresno to Heathrow flights
San Jose to London City flights
Los Angeles to Birmingham flights
Los Angeles to Southampton flights

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 April 22, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$272Average$933FlexibilityNo cancel feeOn-time60%
Norse Atlantic UKCheapest$384Average$674FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$414Average$602FlexibilityNo cancel feeOn-time77%
Virgin AtlanticCheapest$418Average$884FlexibilityNo cancel feeOn-time72%
Air FranceCheapest$447Average$646FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$454Average$817FlexibilityNo cancel feeOn-time76%
KLMCheapest$463Average$952FlexibilityNo cancel feeOn-time75%
TAP AIR PORTUGALCheapest$509Average$675FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$533Average$933FlexibilityNo cancel feeOn-time79%
DeltaCheapest$551Average$864FlexibilityNo cancel feeOn-timeN/A

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.