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Portsmouth

$531+ 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 7/10. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — LHR
Jun 9 — Jun 161
Tue 6/9
Tue 6/16
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 May 10, 2026.

This Delta deal was found by Cheapflights users on 5/7. 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 11/21:45 pm
LAX
-
SOU
1 stop34h 25m
Delta
Mon 11/165:30 pm
SOU
-
LAX
1 stop26h 15m
Delta
Deal found 5/7$1,010
This Delta deal was found by Cheapflights users on 5/7. 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 11/110:50 pm
LAX
-
SOU
2 stops25h 20m
Delta
Thu 11/125:30 pm
SOU
-
LAX
1 stop26h 15m
Delta
Deal found 5/7$1,015
This Delta deal was found by Cheapflights users on 5/7. 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.
Thu 11/51:45 pm
LAX
-
SOU
1 stop19h 15m
Delta
Thu 11/125:30 pm
SOU
-
LAX
1 stop26h 15m
Delta
Deal found 5/7$1,060
This Delta deal was found by Cheapflights users on 5/5. 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 8/31:50 pm
LAX
-
SOU
1 stop19h 45m
Delta
Thu 8/136:05 pm
SOU
-
LAX
1 stop25h 45m
Delta
Deal found 5/5$1,064
This Delta deal was found by Cheapflights users on 5/5. 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 8/811:59 pm
LAX
-
SOU
2 stops24h 46m
Delta
Wed 8/129:15 am
SOU
-
LAX
1 stop13h 30m
Delta
Deal found 5/5$1,068
This Kiwi.com deal was found by Cheapflights users on 5/8. 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.
Tue 9/228:10 pm
LAX
-
SOU
2 stops28h 35m
Multiple Airlines
Sat 10/39:20 am
SOU
-
LAX
1 stop17h 05m
Multiple Airlines
Deal found 5/8$1,095
This Delta deal was found by Cheapflights users on 5/7. 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.
Thu 11/51:45 pm
LAX
-
SOU
1 stop19h 15m
Delta
Fri 11/135:30 pm
SOU
-
LAX
1 stop26h 15m
Delta
Deal found 5/7$1,110
This Delta deal was found by Cheapflights users on 5/10. 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 10/94:45 pm
LAX
-
SOU
1 stop16h 05m
Delta
Sun 10/115:20 pm
SOU
-
LAX
1 stop29h 25m
Delta
Deal found 5/10$1,111
This Delta deal was found by Cheapflights users on 5/5. 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.
Thu 8/61:50 pm
LAX
-
SOU
1 stop19h 45m
Delta
Wed 8/129:15 am
SOU
-
LAX
1 stop13h 30m
Delta
Deal found 5/5$1,114
This Delta deal was found by Cheapflights users on 5/5. 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 8/34:45 pm
LAX
-
SOU
1 stop16h 50m
Delta
Sun 8/169:15 am
SOU
-
LAX
1 stop34h 35m
Delta
Deal found 5/5$1,124

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 May 10, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$1,010
(Delta)

One-way from

$531
(Kiwi.com)

Popular in

December

Cheapest in

September

Average price

$825
Provider with most accurate pricing for Los Angeles Los Angeles-London (LON) flight deals.
Search Deals
Provider most trusted by Cheapflights users for Los Angeles Los Angeles-London (LON) flights.
Search Deals
From Los Angeles Los Angeles to Portsmouth
Search Deals
One-way flight from Los Angeles Los Angeles to Portsmouth
Search Deals
Highest demand for flights based on searches. 11% potential increase in price ($99 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in May 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 May 10, 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 Los Angeles

Fri 11/6

1:45 pm-5:00 pm

1 stop19h 15m

Southampton Eastleigh

Thu 11/12

5:30 pm-11:45 am

1 stop26h 15m

$1,060

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles Los Angeles

Thu 11/5

1:45 pm-5:00 pm

1 stop19h 15m

Southampton Eastleigh

Fri 11/13

5:30 pm-11:45 am

1 stop26h 15m

$1,110

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles Los Angeles

Thu 8/6

1:50 pm-8:45 am

1 stop34h 55m

Southampton Eastleigh

Sun 8/16

5:30 pm-2:45 pm

1 stop29h 15m

$1,231

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles Los Angeles

Tue 7/14

1:15 pm-5:35 pm

2 stops20h 20m

Southampton Eastleigh

Tue 7/21

6:05 pm-3:47 pm

2 stops29h 42m

$1,231

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles Los Angeles

Fri 7/17

4:45 pm-5:00 pm

1 stop16h 15m

Southampton Eastleigh

Thu 7/30

9:15 am-9:07 pm

2 stops19h 52m

$1,286

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles Los Angeles

Fri 5/29

4:45 pm-4:50 pm

1 stop16h 05m

Southampton Eastleigh

Thu 6/4

5:20 pm-2:45 pm

1 stop29h 25m

$1,514
Quickest round-trip

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles Los Angeles

Sun 8/2

4:45 pm-5:35 pm

1 stop16h 50m

Southampton Eastleigh

Fri 8/7

9:15 am-2:45 pm

1 stop13h 30m

$1,770

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles Los Angeles

Thu 6/18

4:30 pm-7:25 pm

2 stops18h 55m

Southampton Eastleigh

Fri 6/26

9:20 am-6:25 pm

1 stop17h 05m

$5,870

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles Los Angeles

Wed 6/3

5:05 pm-7:25 pm

2 stops18h 20m

Southampton Eastleigh

Mon 6/8

9:20 am-6:25 pm

1 stop17h 05m

$5,870
Cheapest one-way

Los AngelesSouthampton

LAX - SOU

LAXSOU

Los Angeles Los Angeles

Sat 6/20

1:15 pm-8:40 am

2 stops35h 25m

$650

Flights are sorted by cheapest round-trip flights first.

Deals found on 5/9

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 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 May 10, 2026.

It’s typically best to fly out from Los Angeles to Portsmouth at noon. Doing so could potentially save you 34% 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 May 9, 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 May 10, 2026.

The most flights from LAX to P0R are scheduled on a Monday (54 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (50 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 May 10, 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
1,513 reviews

Crew

8.4

Entertainment

7.2

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
KLM
7.8
Good
1,513 reviews
KLM
7.8
Good
1,513 reviews

Crew

8.4

Entertainment

7.2

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful
Aer Lingus
7.3
Good
1,551 reviews
KLM
7.8
Good
1,513 reviews

Crew

8.4

Entertainment

7.2

Boarding

7.8

Overall

7.8

Food

7.3

Comfort

7.7

Reviews

1 / 20
6.0
Good

Anonymous,Apr 2026

OKC - ATL

Flight was ok - difficult as I had seat next to bathroom.. Food awful

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 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 21 different airlines.

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

    For as low as $1,060, Delta can have you in Portsmouth from Los Angeles in 19h 15m. 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: KLM (90%), Air France (90%), Delta( 90%).

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

    On average you can expect to pay $2,781 for a flight from Los Angeles to Portsmouth. The cheapest flight overall is $365 while the most popular route, (Los Angeles Los Angeles - Southampton Eastleigh) is currently priced at $1,033.

  • 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.

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.

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 May 10, 2026.
AirlineCheapestAverageFlexibilityOn-time
JetBlueCheapest$262Average$832FlexibilityNo cancel feeOn-time62%
Brussels AirlinesCheapest$291Average$902FlexibilityNo cancel feeOn-timeN/A
SWISSCheapest$336Average$785FlexibilityNo cancel feeOn-time79%
Norse Atlantic UKCheapest$345Average$646FlexibilityNo cancel feeOn-timeN/A
TAP AIR PORTUGALCheapest$427Average$552FlexibilityNo cancel feeOn-timeN/A
Aer LingusCheapest$474Average$953FlexibilityNo cancel feeOn-timeN/A
FinnairCheapest$485Average$759FlexibilityNo cancel feeOn-time76%
IberiaCheapest$516Average$779FlexibilityNo cancel feeOn-time77%
Scandinavian AirlinesCheapest$522Average$778FlexibilityNo cancel feeOn-time77%
Air CanadaCheapest$529Average$857FlexibilityNo cancel feeOn-time67%

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