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Cheap flights from Portsmouth to Irvine from £536

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 21/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
9 Jul — 16 Jul1
1 adult

Cheap flight deals from Portsmouth to Irvine

Keep the following information in mind while searching for Portsmouth to Irvine flight deals. Data was last updated 4 July 2025.

Round-trip from

£536

Popular in

August

Cheapest in

March

Average price

£766
Virgin Atlantic
  • Virgin Atlantic
  • 21/9-4/10
  • 2 total stops
  • 45h 25m total
  • Portsmouth to Irvine
Highest demand for flights based on searches. 15% potential increase in price (£97 potential increase over avg. return price).
Cheapest flight prices on average. 3% potential price decrease (£19 potential savings vs. average return price).
Average for round-trip flights in July 2025

Find flight deals from Portsmouth to Irvine

Cheapest flights from Portsmouth to Irvine
Explore the most affordable flight options available from Portsmouth to Irvine. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 July 2025.

Sun 21/918:25SOU - LAX
1 stop25h 25mVirgin Atlantic
Sat 4/1013:50LAX - SOU
1 stop20h 00mVirgin Atlantic
Deal found 2/7£536
Thu 10/718:25SOU - LAX
1 stop28h 25mDelta
Tue 9/916:45LAX - SOU
1 stop16h 15mDelta
Deal found 2/7£604
Wed 16/709:20SOU - LAX
1 stop13h 30mKLM
Tue 29/716:45LAX - SOU
1 stop32h 00mKLM
Deal found 3/7£688
Fri 15/820:00SOU - LAX
1 stop30h 25mAer Lingus
Fri 22/820:15LAX - SOU
1 stop28h 20mAer Lingus
Deal found 2/7£705
Fri 15/819:40SOU - LAX
2 stops30h 45mMultiple Airlines
Fri 22/820:15LAX - SOU
1 stop28h 20mMultiple Airlines
Deal found 2/7£770

Cheapflights Fare Finder

Customise your flight search to find flights from Portsmouth to Irvine 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 858,174 searches. Data last updated 4 July 2025.
Use the filters below to find and compare flights from Portsmouth to Irvine that are best for you.

Fly from

Portsmouth

Fly to

Irvine

Route

Depart

Return

Price

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sun 21/9

18:25-11:50

1 stop25h 25m

Los Angeles

Sat 4/10

13:50-17:50

1 stop20h 00m

£536

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Wed 16/7

09:20-14:50

1 stop13h 30m

Los Angeles

Tue 29/7

16:45-08:45

1 stop32h 00m

£688

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Fri 15/8

20:00-18:25

1 stop30h 25m

Los Angeles

Fri 22/8

20:15-08:35

1 stop28h 20m

£705

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Fri 15/8

19:40-18:25

2 stops30h 45m

Los Angeles

Fri 22/8

20:15-08:35

1 stop28h 20m

£770

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Wed 23/7

09:20-14:50

1 stop13h 30m

Los Angeles

Wed 30/7

16:50-17:50

1 stop17h 00m

£779

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sun 27/7

09:10-23:57

2 stops22h 47m

£1,014

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Tue 26/8

17:35-14:50

1 stop29h 15m

£1,129

Flights are sorted by cheapest return flights first.

Deals found on 4/7

Best time to book a flight from Portsmouth to Irvine

Have a flexible travel schedule? Discover the best time to fly to Irvine from Portsmouth with our price prediction graph.
Estimated return 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 Portsmouth to Irvine

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

Currently, January is the cheapest month in which you can book a flight from Portsmouth to Irvine (average of £575). Flying from Portsmouth to Irvine in July is currently the most expensive (average of £811). 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 P0R to IR9?

Find hourly flight availability from Portsmouth to Irvine. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 July 2025.

When flying from Portsmouth to Irvine, 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 Portsmouth to Irvine?

Use this chart to determine the cheapest time to fly return from Portsmouth to Irvine. Price data was last updated on 29 September 2024.

Travellers seeking maximum savings on their Portsmouth to Irvine flight should consider departing on Tuesday mornings when fares are most often at their lowest. Monday evenings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Portsmouth to Irvine

Explore weekly flight availability from Portsmouth to Irvine. 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 4 July 2025.

The most flights from P0R to IR9 are scheduled on a Wednesday (53 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 Irvine

Get insights into the airlines that provide service to Irvine. 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 Irvine. Reviews last updated 4 July 2025.
Check out reviews from past customers who have flown with Delta, KLM, andVirgin Atlantic from Portsmouth to Irvine to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
8.0
Very Good

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Overall

8.0

Comfort

7.9

Food

7.3

Crew

8.5

Boarding

8.2

Entertainment

7.9

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

Related info for your journey

Find useful and relevant information for your journey from Portsmouth to Irvine. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What are the most reliable airlines from Portsmouth to Irvine?

    Consider SriLankan Airlines (94%), KLM (88%) or Air France (88%) when booking your flight. These represent the most reliable airlines when flying from Portsmouth to Irvine.

  • What are the cheapest flights from Portsmouth to Irvine?

    While on average a flight from Portsmouth to Irvine is generally £3,462, our data shows the cheapest flight currently is £363. When looking at the most popular route, (Southampton Eastleigh - Los Angeles), you can expect to pay £536 for that flight.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to Irvine (average of £575). Flying from Portsmouth to Irvine in July is currently the most expensive (average of £811). 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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Alternative routes for Portsmouth to Irvine

See prices for flight routes from nearby airports that may be better suited for you.

Top 10 airlines flying from Portsmouth to Irvine

Discover the top 10 airlines that operate flights from Portsmouth to Irvine. 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 858,174 searches. Data last updated 4 July 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest£273Average£497FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Norse Atlantic UKCheapest£318Average£516FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
DeltaCheapest£322Average£535FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
KLMCheapest£340Average£502FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£348Average£451FlexibilityNo cancel feeOn-time77%
Search Air France flights
Brussels AirlinesCheapest£348Average£472FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Scandinavian AirlinesCheapest£348Average£496FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
United AirlinesCheapest£352Average£532FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Austrian AirlinesCheapest£352Average£465FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
FinnairCheapest£353Average£468FlexibilityNo cancel feeOn-time76%
Search Finnair flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portsmouth to Irvine?

Cheapflights makes it easy to find Portsmouth to Irvine flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Irvine?

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Can Cheapflights find flights from Portsmouth to Irvine with no change fees?

Certainly. Search results for flights to Irvine from Portsmouth shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

Can Cheapflights notify me if prices for flights from Portsmouth to Irvine become cheaper?

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