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Cheap flights from Portsmouth to Irvine from £433

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 28/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — LAX
12 Sep — 19 Sep1
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 13 August 2026.

Tue 8/909:15 -
1 stop17h 10m
Mon 14/920:10 -
1 stop15h 20m
Deal found 10/8£544
Sun 27/917:20 -
1 stop29h 25m
Sun 4/1016:45 -
1 stop31h 50m
Deal found 12/8£595
Sun 6/909:15 -
1 stop13h 30m
Sat 12/923:55 -
2 stops24h 40m
Deal found 8/8£610
Tue 8/909:05 -
1 stop13h 40m
Mon 14/906:10 -
2 stops18h 25m
Deal found 9/8£612
Thu 10/917:20 -
1 stop29h 25m
Thu 17/923:55 -
2 stops24h 50m
Deal found 10/8£612
Sun 6/909:15 -
2 stops21h 06m
Sat 12/910:30 -
2 stops22h 20m
Deal found 8/8£614
Tue 8/917:20 -
1 stop29h 25m
Mon 14/916:45 -
1 stop32h 00m
Deal found 11/8£617

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 13 August 2026.

Round-trip from

£544

One-way from

£433

Popular in

December

Cheapest in

February

Average price

£529
Aer Lingus
  • Aer Lingus
  • 8/9-14/9
  • 2 total stops
  • 32h 30m total
  • Portsmouth to Irvine
Search Deals
British Airways
  • British Airways
  • 28/10
  • 1 total stop
  • 17h 10m total
  • Portsmouth to Irvine
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£9 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 13 August 2026.
Use the filters below to find and compare flights from Portsmouth to Irvine that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

SouthamptonLos Angeles

SOU Southampton Eastleigh - LAX Los Angeles

SOULAX

Southampton Eastleigh

Sun 27/9

17:20-14:45

1 stop29h 25m

Los Angeles

Sun 4/10

08:25-08:35

2 stops16h 10m

£598

SouthamptonLos Angeles

SOU Southampton Eastleigh - LAX Los Angeles

SOULAX

Southampton Eastleigh

Thu 10/9

17:20-14:45

1 stop29h 25m

Los Angeles

Thu 17/9

23:55-08:45

2 stops24h 50m

£612

SouthamptonLos Angeles

SOU Southampton Eastleigh - LAX Los Angeles

SOULAX

Southampton Eastleigh

Wed 9/9

09:15-14:45

1 stop13h 30m

Los Angeles

Wed 7/10

06:00-08:35

2 stops18h 35m

£654
Fastest return journey

SouthamptonLos Angeles

SOU Southampton Eastleigh - LAX Los Angeles

SOULAX

Southampton Eastleigh

Thu 10/9

09:05-14:45

1 stop13h 40m

Los Angeles

Thu 8/10

16:45-16:50

1 stop16h 05m

£654

SouthamptonLos Angeles

SOU Southampton Eastleigh - LAX Los Angeles

SOULAX

Southampton Eastleigh

Sun 6/12

17:30-11:45

1 stop26h 15m

Los Angeles

Sat 16/1

09:59-17:00

2 stops23h 01m

£654

SouthamptonLos Angeles

SOU Southampton Eastleigh - LAX Los Angeles

SOULAX

Southampton Eastleigh

Sun 6/12

17:30-11:45

1 stop26h 15m

Los Angeles

Tue 19/1

07:00-08:10

2 stops17h 10m

£654

SouthamptonLos Angeles

SOU Southampton Eastleigh - LAX Los Angeles

SOULAX

Southampton Eastleigh

Wed 9/12

08:40-11:45

1 stop35h 05m

Los Angeles

Sun 17/1

13:50-17:00

1 stop19h 10m

£654

SouthamptonLos Angeles

SOU Southampton Eastleigh - LAX Los Angeles

SOULAX

Southampton Eastleigh

Sat 12/9

09:15-23:42

2 stops22h 27m

Los Angeles

Wed 7/10

16:45-16:50

1 stop16h 05m

£657

SouthamptonLos Angeles

SOU Southampton Eastleigh - LAX Los Angeles

SOULAX

Southampton Eastleigh

Thu 17/12

08:40-22:34

2 stops21h 54m

Los Angeles

Wed 6/1

13:45-17:00

1 stop19h 15m

£678

SouthamptonLos Angeles

SOU Southampton Eastleigh - LAX Los Angeles

SOULAX

Southampton Eastleigh

Tue 15/12

08:40-21:25

2 stops20h 45m

Los Angeles

Wed 6/1

07:00-08:10

2 stops17h 10m

£678

Flights are sorted by cheapest return flights first.

Deals found on 9/8

Showing 1-10 of 21 resultsSorted by cheapest first
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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 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 13 August 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 13 August 2026.

The most flights from P0R to IR9 are scheduled on a Monday (57 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (52 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 £598, KLM can have you in Irvine from Portsmouth in 29h 25m. Airlines will cover a distance of 5434 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

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

    Consider SriLankan Airlines (100%), Malaysia Airlines (92%) or Fiji Airways (89%) 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 £2,250, our data shows the cheapest flight currently is £311. When looking at the most popular route, (Southampton Eastleigh - Los Angeles), you can expect to pay £595 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.

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.
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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 13 August 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest£302Average£496FlexibilityNo cancel feeOn-time69%
Search United Airlines flights
Norse Atlantic UKCheapest£304Average£548FlexibilityNo cancel feeOn-timeN/A
Search Norse Atlantic UK flights
Aer LingusCheapest£331Average£456FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
Virgin AtlanticCheapest£337Average£447FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights
Scandinavian AirlinesCheapest£338Average£466FlexibilityNo cancel feeOn-time77%
Search Scandinavian Airlines flights
DeltaCheapest£338Average£579FlexibilityNo cancel feeOn-timeN/A
Search Delta flights
Brussels AirlinesCheapest£344Average£463FlexibilityNo cancel feeOn-timeN/A
Search Brussels Airlines flights
SWISSCheapest£345Average£519FlexibilityNo cancel feeOn-time79%
Search SWISS flights
Austrian AirlinesCheapest£350Average£485FlexibilityNo cancel feeOn-time78%
Search Austrian Airlines flights
TAP AIR PORTUGALCheapest£351Average£480FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL 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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