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Cheap flights from Ireland to Portsmouth
DUB — LHR
10 Nov — 17 Nov1
Find flight deals from Ireland to Portsmouth
Keep the following information in mind while searching for Ireland to Portsmouth flight deals. Data was last updated 11 October 2026.
Popular in | June |
|---|---|
Cheapest in | September |
Average price | £69 |
Cheapflights Insights
Everything you need to know about your flight from Ireland to Portsmouth
Prices
Airlines
What is the cheapest time of day to fly from IE to P0R?
Find hourly flight availability from Ireland 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 11 October 2026.
When flying from Ireland to Portsmouth, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 41% versus a flight in the afternoon.
What is the cheapest day to fly from Ireland to Portsmouth?
Use this chart to determine the cheapest time to fly return from Ireland to Portsmouth. Price data was last updated on 10 October 2026.
Travellers seeking maximum savings on their Ireland to Portsmouth flight should consider departing on Saturday afternoons when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.
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 11 October 2026.
See what other customers who have flown with Aer Lingus from Ireland 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.
Boarding
7.5
Entertainment
7.0
Food
6.7
Overall
7.3
Crew
8.1
Comfort
7.2
Reviews
1 / 20
10.0
ExcellentKarin,Oct 2026
DUB - MCO
Boarding
7.5
Entertainment
7.0
Food
6.7
Overall
7.3
Crew
8.1
Comfort
7.2
Reviews
1 / 20
10.0
ExcellentKarin,Oct 2026
DUB - MCO
Related info for your journey
Find useful and relevant information for your journey from Ireland to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for Ireland to Portsmouth
See prices for flight routes from nearby airports that may be better suited for you.
Complete your trip
Complete your trip to Portsmouth by adding a car hire and/or hotel booking to your travel itinerary.
Direct flights to England
Book a non-stop flight to one of these other cities located in England.
Search flights from Ireland to Portsmouth by cabin class
Find flights from Ireland to Portsmouth, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Ireland and Portsmouth flights
Browse other Ireland and Portsmouth flight options. Last updated on 11 October 2026.
Popular flight searches
Check out other popular destinations found by fellow travellers in 2026
Find a return flight route from Portsmouth
Find the right flight back to Ireland after your stay in Portsmouth
Ireland to Portsmouth flights
Consider these flights travelling from Ireland to Portsmouth.
Top 3 airlines flying from Ireland to Portsmouth
Discover the top 3 airlines that operate flights from Ireland 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 7,457,451 searches. Data last updated 11 October 2026.
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How does Cheapflights help users find flights from Ireland to Portsmouth?
Cheapflights makes it easy to find Ireland to Portsmouth 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 Ireland to Portsmouth?
It’s simple! Cheapflights, which is free to use for everyone, saves millions of users time and money every year by helping them find the cheapest and most suitable flights from Ireland to Portsmouth.
Can Cheapflights find flights from Ireland to Portsmouth with no change fees?
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Not ready to book yet? You can track prices for flights from Ireland to Portsmouth on Cheapflights with our Price Alert feature and get notified when better prices are available.