Cheap flights from Dublin to Portsmouth from £37
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 27/8. Fares are subject to change and may not be available on all flights or dates of travel.
Cheapflights Tip: The best prices from Dublin to Portsmouth are usually found in December or January, booked 47 days in advance, depart on a Tuesday or Thursday and return on a Monday
Cheap flight deals from Dublin to Portsmouth
Keep the following information in mind while searching for Dublin to Portsmouth flight deals. Data was last updated 3 July 2025.
Round-trip from | £73 |
---|---|
One-way from | £37 |
Popular in | June |
Cheapest in | December |
Average price | £151 |
Find flight deals from Dublin to Portsmouth
Cheapest flights from Dublin to PortsmouthExplore the most affordable flight options available from Dublin to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 July 2025.
Explore the most affordable flight options available from Dublin to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 July 2025.
Cheapflights Fare Finder
Customise your flight search to find flights from Dublin to Portsmouth 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 3 July 2025.
Use the filters below to find and compare flights from Dublin to Portsmouth that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
DublinSouthampton
DUB - SOU
DUBSOU
Dublin
Tue 19/8
07:00-08:40
Nonstop1h 40m
Southampton Eastleigh
Wed 20/8
20:00-21:35
Nonstop1h 35m
DublinSouthampton
DUB - SOU
DUBSOU
Dublin
Tue 19/8
07:00-08:40
Nonstop1h 40m
Southampton Eastleigh
Wed 20/8
18:25-22:25
1 stop4h 00m
DublinSouthampton
DUB - SOU
DUBSOU
Dublin
Wed 30/7
20:45-08:45
1 stop12h 00m
Southampton Eastleigh
Wed 6/8
09:20-20:15
1 stop10h 55m
DublinSouthampton
DUB - SOU
DUBSOU
Dublin
Wed 27/8
06:25-08:05
Nonstop1h 40m
DublinSouthampton
DUB - SOU
DUBSOU
Dublin
Fri 29/8
08:10-15:40
1 stop7h 30m
DublinSouthampton
DUB - SOU
DUBSOU
Dublin
Mon 25/8
20:45-08:50
1 stop12h 05m
DublinSouthampton
DUB - SOU
DUBSOU
Dublin
Thu 13/11
18:00-19:40
Nonstop1h 40m
DublinSouthampton
DUB - SOU
DUBSOU
Dublin
Tue 2/9
12:45-07:30
1 stop18h 45m
Best time to book a flight from Dublin to Portsmouth
Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Dublin with our price prediction graph.
Cheapflights Insights
Everything you need to know about your flight from Dublin to Portsmouth
How far ahead should I book a flight from Dublin to Portsmouth?
Use this chart to determine the optimal time to book a return flight from Dublin to Portsmouth. Price data was last updated on 27 June 2025.
Booking 47 days in advance of your planned departure date is, on average, the best time to get cheap flights from Dublin to Portsmouth. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest month to book a flight from Dublin to Portsmouth?
Currently, January is the cheapest month in which you can book a flight from Dublin to Portsmouth (average of £112). Flying from Dublin to Portsmouth in August is currently the most expensive (average of £164). 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 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 3 July 2025.
Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Dublin to Portsmouth as you normally would.
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 16 December 2024.
Travellers seeking maximum savings on their Dublin to Portsmouth flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday afternoons 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 3 July 2025.
The most flights from DUB to P0R are scheduled on a Monday (78 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (44 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 3 July 2025.
Get a feel of what it's like to fly with KLM, Aer Lingus, andBritish Airways 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.
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
Crew
Overall
Food
Boarding
Entertainment
Comfort
Reviews
Anonymous,Jun 2025
AMS - BOS
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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for Dublin to Portsmouth
See prices for flight routes from nearby airports that may be better suited for you.
Top 3 airlines flying from Dublin to Portsmouth
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 858,174 searches. Data last updated 3 July 2025.
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 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.