Cheapflights Tip: The best prices from Dublin to Portsmouth are usually found in December or November, booked 27 days in advance, depart on a Tuesday or Monday and return on a Tuesday
Find flight deals from Dublin to Portsmouth
Keep the following information in mind while searching for Dublin to Portsmouth flight deals. Data was last updated 30 October 2026.
Popular in
July
Cheapest in
December
Average price
£124
Highest demand for flights based on searches. 15% potential increase in price (£18 potential increase over avg. return price).
Everything you need to know about your flight from Dublin to Portsmouth
Prices
Airlines
What is the cheapest time of day to fly from DUB to P0R?
Find hourly flight availability from Dublin 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 30 October 2026.
It’s optimal to fly from Dublin to Portsmouth in the evening. By choosing this option you can save up to 51% on the cost of your flight, compared to a flight in the afternoon.
What is the cheapest day to fly from Dublin to Portsmouth?
Use this chart to determine the cheapest time to fly return from Dublin to Portsmouth. Price data was last updated on 24 October 2026.
Travellers seeking maximum savings on their Dublin to Portsmouth flight should consider departing on Tuesday 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.
Weekly flight availability from Dublin to Portsmouth
Explore weekly flight availability from Dublin to Portsmouth. 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 30 October 2026.
The most flights from DUB to P0R are scheduled on a Thursday (73 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (41 on average).
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 30 October 2026.
Get a feel of what it's like to fly with Aer Lingus from Dublin to Portsmouth by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food could have been better. The chicken and rice dish was excellent. Not sure about the salads. And the pizza was horrible was lukewarm and had way too much dough. Staff was mixed. Some staff didn’t seem like they wanted to be there.
Food could have been better. The chicken and rice dish was excellent. Not sure about the salads. And the pizza was horrible was lukewarm and had way too much dough. Staff was mixed. Some staff didn’t seem like they wanted to be there.
Related info for your journey
Find useful and relevant information for your journey from Dublin to Portsmouth. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
What airport do you fly from for flights from Dublin to Portsmouth?
For a flight from Dublin to Portsmouth, you will be flying from Dublin. Dublin (DUB) is just 5.7 mi from the center of the city. Dublin is the only Dublin airport and it handles 4 outbound flights to Portsmouth per day. 3 airlines have flights to Portsmouth from Dublin on a regular basis.
What are the most reliable airlines from Dublin to Portsmouth?
Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Dublin to Portsmouth on time: Air Canada (82%), Aer Lingus (76%), British Airways (75%).
What are the cheapest flights from Dublin to Portsmouth?
Looking for the cheapest flight from Dublin to Portsmouth? While on average our users pay £1,495, our data indicates the cheapest price to be £43. The most popular route (Dublin - Southampton Eastleigh), is priced around £90.
Can I find deals for business class flights from Dublin to Portsmouth?
Yes. Cheapflights offers flight deals from Dublin to Portsmouth by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
Discover the top 3 airlines that operate flights from Dublin 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 30 October 2026.
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 Dublin to Portsmouth?
Cheapflights makes it easy to find Dublin 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 Dublin to Portsmouth?
Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dublin to Portsmouth for you. Better yet — we are completely free to use.
Can Cheapflights find flights from Dublin to Portsmouth with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Dublin to Portsmouth flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Dublin to Portsmouth become cheaper?
Not ready to book yet? You can track prices for flights from Dublin to Portsmouth on Cheapflights with our Price Alert feature and get notified when better prices are available.
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