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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
17 Sep — 24 Sep1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Portsmouth to Dublin are usually found in February or January, booked 77 days in advance, depart on a Tuesday or Wednesday and return on a Tuesday
Cheap flight deals from Portsmouth to Dublin
Enter your travel dates to find the best prices.
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Best
Direct
Last-minute
One-way
Cheapest flights from Portsmouth to Dublin
Explore the most affordable flight options available from Portsmouth to Dublin. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 18 August 2026.
Tue 1/920:00 -
Nonstop1h 35m
Tue 8/917:50 -
Nonstop1h 40m
Deal found 14/8£108
Thu 17/920:00 -
Nonstop1h 35m
Sun 20/906:55 -
Nonstop1h 40m
Deal found 15/8£108
Sun 13/909:20 -
Nonstop1h 40m
Mon 21/907:00 -
Nonstop1h 40m
Deal found 16/8£109
Wed 23/910:45 -
1 stop12h 50m
Tue 29/906:55 -
1 stop5h 55m
Deal found 14/8£110
Fri 18/920:00 -
Nonstop1h 35m
Sat 19/917:50 -
Nonstop1h 40m
Deal found 16/8£111
Fri 6/1117:15 -
1 stop5h 35m
Sun 8/1107:00 -
Nonstop1h 40m
Deal found 18/8£111
Mon 14/920:00 -
Nonstop1h 35m
Wed 16/906:20 -
1 stop3h 55m
Deal found 16/8£113
Tue 15/917:20 -
Nonstop1h 35m
Tue 22/906:55 -
1 stop5h 55m
Deal found 13/8£114
Wed 2/920:00 -
Nonstop1h 35m
Tue 15/919:15 -
1 stop15h 00m
Deal found 17/8£115
Wed 30/910:45 -
1 stop12h 50m
Wed 7/1006:20 -
1 stop3h 55m
Deal found 16/8£117
Best flights from Portsmouth to Dublin
Discover carefully curated flight deals from Portsmouth to Dublin that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 18 August 2026.
Sun 17/120:00 -
Nonstop1h 35m
Thu 21/107:00 -
Nonstop1h 40m
Deal found 13/8£111
Mon 14/920:40 -
1 stop12h 30m
Wed 16/906:20 -
1 stop3h 55m
Deal found 18/8£122
Sun 17/117:30 -
1 stop14h 35m
Thu 21/113:25 -
1 stop3h 35m
Deal found 13/8£142
Fri 4/1217:05 -
Nonstop1h 50m
Mon 7/1207:00 -
Nonstop1h 40m
Deal found 14/8£229
Fri 18/920:00 -
Nonstop1h 35m
Mon 21/905:55 -
1 stop26h 40m
Deal found 14/8£142
Tue 15/917:20 -
1 stop5h 05m
Tue 22/911:10 -
1 stop5h 40m
Deal found 16/8£151
Sat 5/919:25 -
1 stop11h 20m
Tue 8/906:30 -
2 stops27h 45m
Deal found 14/8£148
Sat 29/817:30 -
1 stop4h 55m
Sun 30/805:55 -
1 stop11h 05m
Deal found 17/8£182
Sat 29/818:50 -
1 stop11h 55m
Sun 30/815:10 -
Nonstop1h 40m
Deal found 15/8£190
Fri 12/217:05 -
Nonstop1h 50m
Fri 26/217:50 -
Nonstop1h 40m
Deal found 14/8£229
Thu 3/1217:05 -
Nonstop1h 50m
Sat 5/1207:00 -
Nonstop1h 40m
Deal found 16/8£229
Sun 17/116:05 -
2 stops21h 30m
Thu 21/113:25 -
1 stop3h 35m
Deal found 13/8£218
Direct flights from Portsmouth to Dublin
Explore direct flight options from Portsmouth to Dublin based on user searches, and compare prices and availability for your desired travel dates. Data last updated 18 August 2026.
Tue 1/920:00 -
Nonstop1h 35m
Tue 8/917:50 -
Nonstop1h 40m
Deal found 14/8£108
Thu 17/920:00 -
Nonstop1h 35m
Sun 20/906:55 -
Nonstop1h 40m
Deal found 15/8£108
Sun 13/909:20 -
Nonstop1h 40m
Mon 21/907:00 -
Nonstop1h 40m
Deal found 16/8£109
Wed 30/909:20 -
Nonstop1h 40m
Wed 7/1006:25 -
Nonstop1h 40m
Deal found 16/8£110
Fri 18/920:00 -
Nonstop1h 35m
Sat 19/917:50 -
Nonstop1h 40m
Deal found 16/8£111
Fri 27/1120:00 -
Nonstop1h 35m
Sun 29/1107:00 -
Nonstop1h 40m
Deal found 13/8£113
Tue 1/920:00 -
Nonstop1h 35m
Tue 15/907:00 -
Nonstop1h 40m
Deal found 18/8£115
Fri 2/1020:00 -
Nonstop1h 35m
Fri 9/1017:50 -
Nonstop1h 40m
Deal found 18/8£117
Mon 5/1020:00 -
Nonstop1h 35m
Fri 9/1007:00 -
Nonstop1h 40m
Deal found 18/8£118
Sun 17/120:00 -
Nonstop1h 35m
Fri 22/107:00 -
Nonstop1h 40m
Deal found 17/8£120
Mon 7/909:20 -
Nonstop1h 40m
Mon 14/907:00 -
Nonstop1h 40m
Deal found 14/8£134
Last-minute flights from Portsmouth to Dublin
Discover last-minute flight deals from Portsmouth to Dublin. Data last updated 18 August 2026 and is based on user searches.
Mon 24/820:00 -
Nonstop1h 35m
Wed 26/806:25 -
Nonstop1h 40m
Deal found 14/8£145
Mon 24/817:55 -
2 stops25h 05m
Wed 26/806:25 -
Nonstop1h 40m
Deal found 14/8£162
Mon 24/820:00 -
Nonstop1h 35m
Tue 25/807:00 -
Nonstop1h 40m
Deal found 15/8£163
Tue 25/820:00 -
Nonstop1h 35m
Thu 27/807:00 -
Nonstop1h 40m
Deal found 16/8£120
Wed 26/820:00 -
Nonstop1h 35m
Sun 30/822:20 -
2 stops34h 05m
Deal found 16/8£148
Wed 26/809:20 -
Nonstop1h 40m
Wed 26/817:50 -
Nonstop1h 40m
Deal found 17/8£159
Fri 28/820:00 -
Nonstop1h 35m
Thu 3/907:00 -
Nonstop1h 40m
Deal found 14/8£135
Fri 28/820:00 -
Nonstop1h 35m
Sun 30/806:55 -
Nonstop1h 40m
Deal found 13/8£141
Fri 28/818:05 -
1 stop14h 15m
Thu 3/911:10 -
1 stop21h 25m
Deal found 14/8£167
One-way flights from Portsmouth to Dublin
Search for one-way flight options from Portsmouth to Dublin. Find affordable one-way fares based on user searches. Data last updated 18 August 2026.
Sat 29/820:00 -
Nonstop1h 35m
Deal found 14/8£57
Tue 25/820:00 -
Nonstop1h 35m
Deal found 13/8£58
Sun 13/909:20 -
Nonstop1h 40m
Deal found 15/8£58
Sun 27/909:20 -
Nonstop1h 40m
Deal found 13/8£60
Wed 16/917:20 -
Nonstop1h 35m
Deal found 16/8£65
Wed 25/1109:20 -
Nonstop1h 40m
Deal found 17/8£66
Mon 23/1109:20 -
Nonstop1h 40m
Deal found 15/8£68
Wed 21/1020:00 -
Nonstop1h 35m
Deal found 18/8£72
Thu 29/1020:00 -
Nonstop1h 35m
Deal found 15/8£75
Wed 2/910:45 -
1 stop12h 50m
Deal found 17/8£76
Thu 3/911:40 -
1 stop11h 00m
Deal found 15/8£79
Find flight deals from Portsmouth to Dublin
Keep the following information in mind while searching for Portsmouth to Dublin flight deals. Data was last updated 18 August 2026.
Customise your flight search to find flights from Portsmouth to Dublin 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 18 August 2026.
Use the filters below to find and compare flights from Portsmouth to Dublin that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
Fastest return journey
SouthamptonDublin
SOU Southampton Eastleigh - DUB Dublin
SOUDUB
Southampton Eastleigh
Sun 17/1
20:00-21:35
Nonstop1h 35m
Dublin
Thu 21/1
07:00-08:40
Nonstop1h 40m
£111
SouthamptonDublin
SOU Southampton Eastleigh - DUB Dublin
SOUDUB
Southampton Eastleigh
Mon 14/9
20:40-09:10
1 stop12h 30m
Dublin
Wed 16/9
06:20-10:15
1 stop3h 55m
£122
SouthamptonDublin
SOU Southampton Eastleigh - DUB Dublin
SOUDUB
Southampton Eastleigh
Fri 18/9
20:00-21:35
Nonstop1h 35m
Dublin
Mon 21/9
05:55-08:35
1 stop26h 40m
£142
SouthamptonDublin
SOU Southampton Eastleigh - DUB Dublin
SOUDUB
Southampton Eastleigh
Sun 17/1
17:30-08:05
1 stop14h 35m
Dublin
Thu 21/1
13:25-17:00
1 stop3h 35m
£142
SouthamptonDublin
SOU Southampton Eastleigh - DUB Dublin
SOUDUB
Southampton Eastleigh
Sat 5/9
19:25-06:45
1 stop11h 20m
Dublin
Tue 8/9
06:30-10:15
2 stops27h 45m
£148
SouthamptonDublin
SOU Southampton Eastleigh - DUB Dublin
SOUDUB
Southampton Eastleigh
Tue 15/9
17:20-22:25
1 stop5h 05m
Dublin
Tue 22/9
11:10-16:50
1 stop5h 40m
£151
SouthamptonDublin
SOU Southampton Eastleigh - DUB Dublin
SOUDUB
Southampton Eastleigh
Sat 29/8
17:30-22:25
1 stop4h 55m
Dublin
Sun 30/8
05:55-17:00
1 stop11h 05m
£182
SouthamptonDublin
SOU Southampton Eastleigh - DUB Dublin
SOUDUB
Southampton Eastleigh
Sat 29/8
18:50-06:45
1 stop11h 55m
Dublin
Sun 30/8
15:10-16:50
Nonstop1h 40m
£190
SouthamptonDublin
SOU Southampton Eastleigh - DUB Dublin
SOUDUB
Southampton Eastleigh
Sun 17/1
16:05-13:35
2 stops21h 30m
Dublin
Thu 21/1
13:25-17:00
1 stop3h 35m
£218
SouthamptonDublin
SOU Southampton Eastleigh - DUB Dublin
SOUDUB
Southampton Eastleigh
Fri 4/12
17:05-18:55
Nonstop1h 50m
Dublin
Mon 7/12
07:00-08:40
Nonstop1h 40m
£229
Flights are sorted by cheapest return flights first.
Deals found on 18/8
Showing 1-10 of 23 resultsSorted by cheapest first
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2
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Best time to book a flight from Portsmouth to Dublin
Have a flexible travel schedule? Discover the best time to fly to Dublin from Portsmouth with our price prediction graph.
SOU-DUB
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 Dublin
P0R-DUB
SOU-DUB
What is the cheapest time of day to fly from P0R to DUB?
Find hourly flight availability from Portsmouth to Dublin. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 18 August 2026.
A simple way to save on the total cost of your ticket is to fly from Portsmouth to Dublin in the afternoon. If you’re flexible enough to do this you can expect to save up to 36% on your trip compared to booking a flight in the morning.
Weekly flight availability from Portsmouth to Dublin
Explore weekly flight availability from Portsmouth to Dublin. 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 18 August 2026.
The most flights from P0R to DUB are scheduled on a Monday (76 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (36 on average).
How much does it cost for a return flight from Portsmouth to Dublin?
Airfare is below average for this route at the moment.
Portsmouth to Dublin flights typically cost between £139 and £209 in September.The cheapest return price found within the last 5 days was £108 on Aer Lingus (1 Sept–8 Sept).
What is the cheapest day to fly from Portsmouth to Dublin?
Use this chart to determine the cheapest time to fly return from Portsmouth to Dublin. Price data was last updated on 15 August 2026.
Travellers seeking maximum savings on their Portsmouth to Dublin flight should consider departing on Tuesday mornings when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Dublin
Get insights into the airlines that provide service to Dublin. 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 Dublin. Reviews last updated 18 August 2026.
Read reviews from past customers who have flown with KLM,Aer Lingus, andBritish Airways
from Portsmouth to Dublin. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.
They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
They didn’t offer any options for breakfast and had only one option which was cold meat and cheese. I would expect at least one more option in premium economy
Related info for your journey
Find useful and relevant information for your journey from Portsmouth to Dublin. 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 into for flights to Dublin from Portsmouth?
If you book a flight to Dublin from Portsmouth, you will be flying to Dublin, which is the city’s only airport. Dublin (DUB) is located 5.7 mi from the center of Dublin. There are 7 flights from Portsmouth to Dublin per day from 4 different airlines.
How long is the flight from Portsmouth to Dublin?
There are many flights that can get you from Portsmouth to Dublin in 1h 35m. Fly via Aer Lingus or KLM to get the fastest option. Airlines will cover a distance of 268 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 Dublin?
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 Portsmouth to Dublin on time: Air Canada (87%), Aer Lingus (80%), Qatar Airways (80%).
What are the cheapest flights from Portsmouth to Dublin?
Looking at all options, your cheapest flight can be booked for £61. While the most popular route (Southampton Eastleigh - Dublin) can be booked for £100 on average, our data indicates £1,136 when flying from Portsmouth to Dublin.
Can I find deals for business class flights from Portsmouth to Dublin?
Yes. Cheapflights offers flight deals from Portsmouth to Dublin by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
Explore flights to Dublin departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on 18 August 2026.
Discover the top 4 airlines that operate flights from Portsmouth to Dublin. 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 18 August 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 Portsmouth to Dublin?
Cheapflights makes it easy to find Portsmouth to Dublin 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 Dublin?
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 Portsmouth to Dublin.
Can Cheapflights find flights from Portsmouth to Dublin with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Portsmouth to Dublin flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Portsmouth to Dublin become cheaper?
Of course! You can now track prices for flights from Portsmouth to Dublin and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price alerts.
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