Cheap flights from Portsmouth to Irvine from £292

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 18/9. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
23 Jul — 30 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 18 July 2025.

Round-trip from

£537

One-way from

£292

Popular in

August

Cheapest in

March

Average price

£780
Delta
  • Delta
  • 11/1-11/5
  • 2 total stops
  • 42h 25m total
  • Portsmouth to Irvine
18/9
  • 18/9
  • 2 total stops
  • 31h 05m total
  • Portsmouth to Irvine
Highest demand for flights based on searches. 17% potential increase in price (£117 potential increase over avg. return price).
Cheapest flight prices on average. 4% potential price decrease (£24 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 18 July 2025.

Tue 2/909:20SOU - LAX
1 stop13h 30mDelta
Tue 9/916:45LAX - SOU
1 stop32h 00mDelta
Deal found 16/7£537
Sun 31/818:25SOU - LAX
2 stops36h 41mVirgin Atlantic
Sun 7/910:40LAX - SOU
2 stops38h 10mVirgin Atlantic
Deal found 17/7£559
Sun 31/809:20SOU - LAX
1 stop34h 30mKLM
Sun 7/916:50LAX - SOU
1 stop32h 00mKLM
Deal found 17/7£572
Thu 30/1009:30SOU - LAX
1 stop17h 00mBritish Airways
Tue 4/1118:00LAX - SOU
2 stops17h 25mBritish Airways
Deal found 16/7£686
Sun 31/815:35SOU - LAX
2 stops32h 45mMultiple Airlines
Sun 7/919:30LAX - SOU
3 stops29h 10mMultiple Airlines
Deal found 17/7£889

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 18 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 11/1

17:30-11:45

1 stop26h 15m

Los Angeles

Mon 27/4

21:20-08:50

2 stops27h 30m

£537

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sun 31/8

18:25-23:06

2 stops36h 41m

Los Angeles

Sun 7/9

10:40-08:50

2 stops38h 10m

£559

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sun 31/8

09:20-11:50

1 stop34h 30m

Los Angeles

Sun 7/9

16:50-08:50

1 stop32h 00m

£572

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Thu 30/10

09:30-19:30

1 stop17h 00m

Los Angeles

Tue 4/11

18:00-19:25

2 stops17h 25m

£686

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Thu 18/9

15:05-14:10

2 stops31h 05m

£292

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Thu 18/9

20:00-18:25

1 stop30h 25m

£436

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Wed 7/1

09:30-18:30

1 stop17h 00m

£781

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sun 17/8

17:35-11:50

1 stop26h 15m

£1,124

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sun 27/7

17:35-11:50

1 stop26h 15m

£1,473

Flights are sorted by cheapest return flights first.

Deals found on 18/7

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 18 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 18 July 2025.

The most flights from P0R to IR9 are scheduled on a Monday (56 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (56 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 18 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

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

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

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

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

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

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

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

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

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

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

Boarding

8.2

Entertainment

7.9

Food

7.3

Comfort

7.9

Crew

8.5

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 cheapest airlines to fly from Portsmouth to Irvine one-way?

    To fly one-way, consider booking your trip with Aer Lingus, which is currently one of the cheapest options available, starting at £436. British Airways flights start at £781 while deals on Delta start at £1,124 one-way.

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

    Consider KLM (86%), Air France (86%) or Delta (86%) 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 £2,065, our data shows the cheapest flight currently is £386. When looking at the most popular route, (Southampton Eastleigh - Los Angeles), you can expect to pay £569 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

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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 18 July 2025.
AirlineCheapestAverageFlexibilityOn-time
SWISSCheapest£278Average£555FlexibilityNo cancel feeOn-time79%
Search SWISS flights
FinnairCheapest£280Average£471FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Norse Atlantic UKCheapest£304Average£516FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
DeltaCheapest£328Average£562FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
KLMCheapest£347Average£512FlexibilityNo cancel feeOn-time75%
Search KLM flights
Air FranceCheapest£354Average£460FlexibilityNo cancel feeOn-time77%
Search Air France flights
Brussels AirlinesCheapest£355Average£477FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
Scandinavian AirlinesCheapest£355Average£502FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
United AirlinesCheapest£359Average£539FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Austrian AirlinesCheapest£359Average£475FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights

Fly with Cheapflights

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

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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.

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