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Portsmouth

$387+ Cheap flights from Los Angeles (LAX) 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 10/30. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Aug 6 — Aug 131
Wed 8/6
Wed 8/13
1 adult, Economy
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Cheap flight deals from Los Angeles to Portsmouth

Keep the following information in mind while searching for Los Angeles to Portsmouth flight deals. Data was last updated August 1, 2025.

Round-trip from

$841
(Delta)

One-way from

$387
(Kiwi.com)

Popular in

January

Cheapest in

February

Average price

$1,170
From Los Angeles to Portsmouth
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One-way flight from Los Angeles to Portsmouth
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Highest demand for flights based on searches. 11% potential increase in price ($149 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($51 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Find flight deals from Los Angeles to Portsmouth

Cheapest flights from Los Angeles to Portsmouth
Explore the most affordable flight options available from Los Angeles to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 1, 2025.

This Mytrip deal was found by Cheapflights users on 8/1. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/158:05 amLAX - SOU
2 stops27h 25mMultiple Airlines
Mon 9/228:00 pmSOU - LAX
2 stops31h 40mMultiple Airlines
Deal found 8/1$824
This Delta deal was found by Cheapflights users on 7/30. 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 9/104:50 pmLAX - SOU
1 stop31h 55mDelta
Tue 9/239:20 amSOU - LAX
1 stop34h 30mDelta
Deal found 7/30$841
This KLM deal was found by Cheapflights users on 7/30. 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 9/261:50 pmLAX - SOU
1 stop34h 55mKLM
Wed 10/159:20 amSOU - LAX
1 stop34h 30mKLM
Deal found 7/30$890
This FlightHub deal was found by Cheapflights users on 7/31. 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 8/3111:54 pmLAX - SOU
2 stops24h 46mAer Lingus
Mon 9/158:00 pmSOU - LAX
1 stop30h 25mAer Lingus
Deal found 7/31$958

Cheapflights Fare Finder

 
Customize your flight search to find flights from Los Angeles 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 August 1, 2025.
Use the filters below to find and compare flights from Los Angeles to Portsmouth that are best for you.

Fly from

Los Angeles

Fly to

Portsmouth

Route

Depart

Return

Price

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Mon 9/15

8:05 am-7:30 pm

2 stops27h 25m

Southampton Eastleigh

Mon 9/22

8:00 pm-7:40 pm

2 stops31h 40m

$824

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 9/10

4:50 pm-8:45 am

1 stop31h 55m

Southampton Eastleigh

Tue 9/23

9:20 am-11:50 am

1 stop34h 30m

$841

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Fri 9/26

1:50 pm-8:45 am

1 stop34h 55m

Southampton Eastleigh

Wed 10/15

9:20 am-11:50 am

1 stop34h 30m

$890

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 8/31

11:54 pm-8:40 am

2 stops24h 46m

Southampton Eastleigh

Mon 9/15

8:00 pm-6:25 pm

1 stop30h 25m

$958

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Thu 10/30

1:00 pm-7:35 pm

2 stops23h 35m

$387

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 8/24

1:50 pm-8:50 am

1 stop35h 00m

$514

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Thu 10/30

9:15 pm-7:40 pm

1 stop15h 25m

$522

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/31

Best time to book a flight from Los Angeles to Portsmouth

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

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

Currently, November is the cheapest month in which you can book a flight from Los Angeles to Portsmouth (average of $661). Flying from Los Angeles to Portsmouth in June is currently the most expensive (average of $1,097). 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 LAX to P0R?

Find hourly flight availability from Los Angeles 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 August 1, 2025.

When flying from Los Angeles to Portsmouth, 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 Los Angeles to Portsmouth?

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

Travelers seeking maximum savings on their Los Angeles 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 Los Angeles to Portsmouth

Explore weekly flight availability from Los Angeles 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 August 1, 2025.

The most flights from LAX to P0R are scheduled on a Monday (59 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 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 August 1, 2025.
See what other customers who have flown with Delta, KLM, and Aer Lingus from Los Angeles 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
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

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
7,981 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

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
1,383 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

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
7.1
Good
1,192 reviews
Delta
8.0
Very good
7,981 reviews

Comfort

7.9

Boarding

8.2

Food

7.3

Crew

8.5

Overall

8.0

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

  • What airport do you fly from for flights from Los Angeles to Portsmouth?

    If you book a flight to Portsmouth from Los Angeles, you will be flying from Los Angeles, which is the city’s only airport. Los Angeles (LAX) is located 9.4 mi from the center of Los Angeles. There are 0 flights from Los Angeles to Portsmouth per day from 19 different airlines.

  • What are the most reliable airlines from Los Angeles to Portsmouth?

    Before booking your flight to Portsmouth from Los Angeles, check out the most reliable airlines to get you to your destination on time: KLM (89%), Air France (89%), Delta( 89%).

  • What are the cheapest flights from Los Angeles to Portsmouth?

    On average you can expect to pay $3,320 for a flight from Los Angeles to Portsmouth. The cheapest flight overall is $377 while the most popular route, (Los Angeles - Southampton Eastleigh) is currently priced at $850.

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

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

  • How can I find direct flights from Los Angeles to Portsmouth?

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

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

    Yes. Cheapflights offers flight deals from Los Angeles 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 Los Angeles to Portsmouth?

    Currently, November is the cheapest month in which you can book a flight from Los Angeles to Portsmouth (average of $661). Flying from Los Angeles to Portsmouth in June is currently the most expensive (average of $1,097). 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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Top 10 airlines flying from Los Angeles to Portsmouth

Discover the top 10 airlines that operate flights from Los Angeles 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 August 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
WestJetCheapest$272Average$1,046FlexibilityNo cancel feeOn-time60%
JetBlueCheapest$273Average$791FlexibilityNo cancel feeOn-time62%
SWISSCheapest$336Average$900FlexibilityNo cancel feeOn-time79%
Norse Atlantic UKCheapest$362Average$686FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$375Average$673FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$418Average$592FlexibilityNo cancel feeOn-time77%
LufthansaCheapest$427Average$732FlexibilityNo cancel feeOn-time76%
Aer LingusCheapest$476Average$994FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$540Average$720FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$553Average$794FlexibilityNo cancel feeOn-time70%

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