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Portsmouth

$455+ 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 5/9. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Apr 22 — Apr 291
Wed 4/22
Wed 4/29
1 adult, Economy
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Cheap 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 March 23, 2026.

This Delta deal was found by Cheapflights users on 3/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/204:45 pm
LAX
-
SOU
1 stop16h 05m
Delta
Thu 10/85:20 pm
SOU
-
LAX
1 stop26h 30m
Delta
Deal found 3/22$960
This Delta deal was found by Cheapflights users on 3/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/2111:45 am
LAX
-
SOU
2 stops21h 05m
Delta
Tue 10/65:20 pm
SOU
-
LAX
1 stop26h 30m
Delta
Deal found 3/22$965
This Kiwi.com deal was found by Cheapflights users on 3/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/77:55 pm
LAX
-
SOU
2 stops52h 00m
Multiple Airlines
Sat 5/168:05 pm
SOU
-
LAX
1 stop29h 25m
Multiple Airlines
Deal found 3/21$989
This Delta deal was found by Cheapflights users on 3/22. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/184:45 pm
LAX
-
SOU
1 stop16h 05m
Delta
Mon 10/55:20 pm
SOU
-
LAX
1 stop26h 30m
Delta
Deal found 3/22$1,010
This Delta deal was found by Cheapflights users on 3/19. 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 9/64:45 pm
LAX
-
SOU
1 stop31h 50m
Delta
Fri 9/189:05 am
SOU
-
LAX
1 stop13h 40m
Delta
Deal found 3/19$1,011
This KLM deal was found by Cheapflights users on 3/21. 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 KLM is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/41:50 pm
LAX
-
SOU
1 stop19h 00m
KLM
Mon 5/115:20 pm
SOU
-
LAX
1 stop26h 30m
KLM
Deal found 3/21$1,014
This Delta deal was found by Cheapflights users on 3/19. 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 9/59:20 pm
LAX
-
SOU
2 stops27h 15m
Delta
Mon 9/145:20 pm
SOU
-
LAX
1 stop26h 30m
Delta
Deal found 3/19$1,015
This Delta deal was found by Cheapflights users on 3/19. 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.
Tue 10/272:45 pm
LAX
-
SOU
1 stop19h 15m
Delta
Fri 11/68:40 am
SOU
-
LAX
2 stops19h 51m
Delta
Deal found 3/19$1,020
This Delta deal was found by Cheapflights users on 3/19. 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 10/2510:50 pm
LAX
-
SOU
2 stops26h 20m
Delta
Fri 11/68:40 am
SOU
-
LAX
2 stops19h 51m
Delta
Deal found 3/19$1,025
This Delta deal was found by Cheapflights users on 3/21. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/911:55 pm
LAX
-
SOU
2 stops24h 40m
Delta
Thu 5/219:05 am
SOU
-
LAX
2 stops21h 20m
Delta
Deal found 3/21$1,029
This Mytrip deal was found by Cheapflights users on 3/20. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/48:10 pm
LAX
-
SOU
1 stop15h 20m
Multiple Airlines
Mon 5/117:20 pm
SOU
-
LAX
3 stops34h 45m
Multiple Airlines
Deal found 3/20$1,033

Find 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 March 23, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$989
(Kiwi.com)

One-way from

$455
(Justfly.com)

Popular in

December

Cheapest in

September

Average price

$708
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 Los Angeles to Portsmouth
Search Deals
One-way flight from Los Angeles to Portsmouth
Search Deals
Highest demand for flights based on searches. 13% potential increase in price ($113 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($28 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

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 March 23, 2026.
Use the filters below to find and compare flights from Los Angeles to Portsmouth that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Mon 5/4

1:50 pm-4:50 pm

1 stop19h 00m

Southampton Eastleigh

Mon 5/11

5:20 pm-11:50 am

1 stop26h 30m

$1,014

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 4/15

4:45 pm-4:50 pm

1 stop16h 05m

Southampton Eastleigh

Tue 4/28

9:05 am-2:45 pm

1 stop13h 40m

$1,064

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 5/10

5:35 am-8:35 am

2 stops19h 00m

Southampton Eastleigh

Fri 6/5

9:05 am-2:45 pm

1 stop13h 40m

$1,075

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sat 5/9

11:55 pm-8:35 am

2 stops24h 40m

Southampton Eastleigh

Fri 6/5

9:05 am-2:45 pm

1 stop13h 40m

$1,075
Quickest round-trip

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 5/12

4:45 pm-4:50 pm

1 stop16h 05m

Southampton Eastleigh

Sat 5/30

9:15 am-2:45 pm

1 stop13h 30m

$1,130

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Thu 5/14

4:45 pm-8:45 am

1 stop32h 00m

Southampton Eastleigh

Sat 5/30

9:15 am-2:45 pm

1 stop13h 30m

$1,246

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Wed 5/27

4:45 pm-4:50 pm

1 stop16h 05m

Southampton Eastleigh

Tue 6/9

9:05 am-2:45 pm

1 stop13h 40m

$1,251

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sun 5/31

1:50 pm-8:35 am

1 stop34h 45m

Southampton Eastleigh

Wed 6/10

5:20 pm-11:50 am

1 stop26h 30m

$1,251

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Tue 5/26

5:35 am-4:50 pm

2 stops27h 15m

Southampton Eastleigh

Wed 6/3

9:05 am-2:45 pm

1 stop13h 40m

$1,256

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles

Sat 5/30

11:55 pm-8:35 am

2 stops24h 40m

Southampton Eastleigh

Tue 6/9

9:05 am-2:45 pm

1 stop13h 40m

$1,256

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/19

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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, October is the cheapest month in which you can book a flight from Los Angeles to Portsmouth (average of $222). Flying from Los Angeles to Portsmouth in June is currently the most expensive (average of $560). 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 March 23, 2026.

It’s typically best to fly out from Los Angeles to Portsmouth in the afternoon. Doing so could potentially save you 33% on the flight price compared to flying in the morning, which is usually more expensive.

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 March 14, 2026.

Travelers seeking maximum savings on their Los Angeles to Portsmouth flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Thursday mornings 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 March 23, 2026.

The most flights from LAX to P0R are scheduled on a Monday (45 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (45 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 March 23, 2026.
See what other customers who have flown with 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.
KLM
7.8
Good
1,477 reviews

Comfort

7.6

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.3

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
KLM
7.8
Good
1,477 reviews
KLM
7.8
Good
1,477 reviews

Comfort

7.6

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.3

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas
Aer Lingus
7.2
Good
1,482 reviews
KLM
7.8
Good
1,477 reviews

Comfort

7.6

Crew

8.4

Entertainment

7.1

Boarding

7.8

Food

7.3

Overall

7.8

Reviews

1 / 20
2.0
Mediocre

Anonymous,Feb 2026

EZE - SCL

It was a short trip The aeroplane was delay I arrived in Chile late and I lost my fly with Qantas

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 20 different airlines.

  • How long is the flight from Los Angeles to Portsmouth?

    For as low as $1,064, KLM can have you in Portsmouth from Los Angeles in 16h 05m. The distance from Los Angeles to Portsmouth is about 5434 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • 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: Air Canada (86%), Austrian Airlines (86%), United Airlines( 86%).

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

    On average you can expect to pay $3,130 for a flight from Los Angeles to Portsmouth. The cheapest flight overall is $275 while the most popular route, (Los Angeles - Southampton Eastleigh) is currently priced at $960.

  • 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, October is the cheapest month in which you can book a flight from Los Angeles to Portsmouth (average of $222). Flying from Los Angeles to Portsmouth in June is currently the most expensive (average of $560). 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

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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 March 23, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$262Average$823FlexibilityNo cancel feeOn-time62%
Brussels AirlinesCheapest$291Average$821FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$300Average$758FlexibilityNo cancel feeOn-time79%
Norse Atlantic UKCheapest$343Average$698FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$420Average$536FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$474Average$859FlexibilityNo cancel feeOn-timeN/A
Scandinavian AirlinesCheapest$480Average$669FlexibilityNo cancel feeOn-time77%
Austrian AirlinesCheapest$484Average$1,071FlexibilityNo cancel feeOn-time78%
FinnairCheapest$486Average$715FlexibilityNo cancel feeOn-time76%
British AirwaysCheapest$498Average$724FlexibilityNo cancel feeOn-time70%

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