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Cheap flights from Portsmouth to Irvine from £457

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 28/6. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
28 Feb — 7 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portsmouth to Irvine

Enter your travel dates to find the best prices.

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 29 January 2026.

Thu 19/220:10
SOU
-
LAX
1 stop30h 20m
British Airways
Mon 23/220:15
LAX
-
SOU
1 stop35h 20m
British Airways
Deal found 26/1£487
Sun 11/1016:45
SOU
-
LAX
2 stops29h 00m
British Airways
Tue 20/1020:10
LAX
-
SOU
1 stop15h 20m
British Airways
Deal found 27/1£573
Wed 25/212:25
SOU
-
LAX
1 stop14h 05m
British Airways
Mon 2/318:00
LAX
-
SOU
2 stops18h 20m
British Airways
Deal found 27/1£600
Sun 11/1009:15
SOU
-
LAX
1 stop34h 35m
KLM
Tue 20/1016:45
LAX
-
SOU
1 stop31h 50m
KLM
Deal found 28/1£650
Fri 13/320:10
SOU
-
LAX
1 stop30h 20m
Aer Lingus
Fri 20/321:15
LAX
-
SOU
1 stop28h 30m
Aer Lingus
Deal found 29/1£665
Sun 11/1020:00
SOU
-
LAX
1 stop30h 25m
Aer Lingus
Tue 20/1015:45
LAX
-
SOU
2 stops19h 45m
Aer Lingus
Deal found 28/1£667
Wed 25/212:25
SOU
-
LAX
1 stop14h 05m
British Airways
Wed 18/321:15
LAX
-
SOU
1 stop15h 25m
British Airways
Deal found 28/1£674
Wed 12/808:55
SOU
-
LAX
2 stops17h 30m
British Airways
Tue 1/917:05
LAX
-
SOU
2 stops31h 20m
British Airways
Deal found 27/1£703

Find flight deals from Portsmouth to Irvine

Keep the following information in mind while searching for Portsmouth to Irvine flight deals. Data was last updated 29 January 2026.

Round-trip from

£487

One-way from

£457

Popular in

July

Cheapest in

February

Average price

£426
British Airways
  • British Airways
  • 19/2-23/2
  • 2 total stops
  • 65h 40m total
  • Portsmouth to Irvine
Search Deals
28/6
  • 28/6
  • 2 total stops
  • 33h 35m total
  • Portsmouth to Irvine
Search Deals
Highest demand for flights based on searches. 31% potential increase in price (£211 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£32 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 29 January 2026.
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

Thu 19/2

20:10-18:30

1 stop30h 20m

Los Angeles

Mon 23/2

20:15-15:35

1 stop35h 20m

£487

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Wed 25/2

12:25-18:30

1 stop14h 05m

Los Angeles

Mon 2/3

18:00-20:20

2 stops18h 20m

£600

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Fri 13/3

20:10-19:30

1 stop30h 20m

Los Angeles

Fri 20/3

21:15-08:45

1 stop28h 30m

£665

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Wed 25/2

12:25-18:30

1 stop14h 05m

Los Angeles

Wed 18/3

21:15-19:40

1 stop15h 25m

£674

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Thu 26/2

09:30-18:30

1 stop17h 00m

Los Angeles

Thu 19/3

21:15-19:40

1 stop15h 25m

£715

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Wed 29/4

06:50-18:25

2 stops19h 35m

Los Angeles

Wed 20/5

20:10-19:30

1 stop15h 20m

£738

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sun 21/6

17:20-11:50

1 stop26h 30m

Los Angeles

Tue 7/7

13:50-17:35

1 stop19h 45m

£739

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Sun 21/6

17:20-11:50

1 stop26h 30m

Los Angeles

Mon 6/7

17:30-17:35

2 stops40h 05m

£744

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Wed 13/5

06:50-18:25

2 stops19h 35m

£462

SouthamptonLos Angeles

SOU - LAX

SOULAX

Southampton Eastleigh

Tue 12/5

09:10-18:25

1 stop17h 15m

£462

Flights are sorted by cheapest return flights first.

Deals found on 28/1

Showing 1-10 of 17 results
1
2

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, September is the cheapest month in which you can book a flight from Portsmouth to Irvine (average of £232). Flying from Portsmouth to Irvine in July is currently the most expensive (average of £383). 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 29 January 2026.

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.

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 29 January 2026.

The most flights from P0R to IR9 are scheduled on a Monday (50 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (35 on average).

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.

  • How long is the flight from Portsmouth to Irvine?

    For as low as £487, British Airways can have you in Irvine from Portsmouth in 30h 20m. Airlines will cover a distance of 5434 mi.

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

    Consider SriLankan Airlines (94%), Air Canada (88%) or Austrian Airlines (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 £2,557, our data shows the cheapest flight currently is £333. When looking at the most popular route, (Southampton Eastleigh - Los Angeles), you can expect to pay £458 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, September is the cheapest month in which you can book a flight from Portsmouth to Irvine (average of £232). Flying from Portsmouth to Irvine in July is currently the most expensive (average of £383). 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.
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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 29 January 2026.
AirlineCheapestAverageFlexibilityOn-time
IberiaCheapest£232Average£513FlexibilityNo cancel feeOn-time77%
Search Iberia flights
SWISSCheapest£270Average£485FlexibilityNo cancel feeOn-time79%
Search SWISS flights
FinnairCheapest£272Average£461FlexibilityNo cancel feeOn-time76%
Search Finnair flights
Norse Atlantic UKCheapest£274Average£493FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Aer LingusCheapest£325Average£480FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Brussels AirlinesCheapest£325Average£471FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
DeltaCheapest£327Average£516FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Scandinavian AirlinesCheapest£334Average£441FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
Austrian AirlinesCheapest£343Average£471FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
KLMCheapest£345Average£511FlexibilityNo cancel feeOn-time75%
Search KLM 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?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Portsmouth to Irvine for you. Better yet — we are completely free to use.

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?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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