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Cheap flights from Portsmouth to Dublin from £76

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 17/8. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
2 Apr — 9 Apr1
1 adult

Cheapflights Tip: The best prices from Portsmouth to Dublin are usually found in January or November, booked 51 days in advance, depart on a Monday or Thursday and return on a Wednesday

Cheap flight deals from Portsmouth to Dublin

Keep the following information in mind while searching for Portsmouth to Dublin flight deals. Data was last updated 28 March 2025.

Round-trip from

£94

One-way from

£76

Popular in

June

Cheapest in

January

Average price

£134
Aer Lingus
  • Aer Lingus
  • 16/6-18/6
  • Nonstop
  • 3h 15m total
  • Portsmouth to Dublin
Search Deals
17/8
  • 17/8
  • 1 total stop
  • 16h 10m total
  • Portsmouth to Dublin
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£19 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Portsmouth to Dublin

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 28 March 2025.

Mon 16/620:00SOU - DUB
Nonstop1h 35mAer Lingus
Wed 18/606:25DUB - SOU
Nonstop1h 40mAer Lingus
Deal found 28/3£94
Fri 9/520:15SOU - DUB
1 stop15h 00mMultiple Airlines
Fri 16/507:00DUB - SOU
Nonstop1h 40mMultiple Airlines
Deal found 27/3£95
Thu 18/909:20SOU - DUB
1 stop10h 55mKLM
Sun 21/920:45DUB - SOU
1 stop12h 00mKLM
Deal found 28/3£155
Thu 24/409:40SOU - DUB
Nonstop1h 40mBritish Airways
Sat 26/407:00DUB - SOU
Nonstop1h 40mBritish Airways
Deal found 28/3£219

Cheapflights Fare Finder

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 28 March 2025.
Use the filters below to find and compare flights from Portsmouth to Dublin that are best for you.

Fly from

Portsmouth

Fly to

Dublin

Route

Depart

Return

Price

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Mon 16/6

20:00-21:35

Nonstop1h 35m

Dublin

Wed 18/6

06:25-08:05

Nonstop1h 40m

£94

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Wed 30/4

09:00-16:55

1 stop7h 55m

Dublin

Fri 2/5

07:00-08:40

Nonstop1h 40m

£100

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Thu 18/9

09:20-20:15

1 stop10h 55m

Dublin

Sun 21/9

20:45-08:45

1 stop12h 00m

£155

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Thu 24/4

09:40-11:20

Nonstop1h 40m

Dublin

Sat 26/4

07:00-08:40

Nonstop1h 40m

£219

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Sun 11/5

17:05-12:20

2 stops19h 15m

Dublin

Fri 25/7

13:00-19:05

2 stops6h 05m

£631

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Sun 17/8

14:50-07:00

1 stop16h 10m

£76

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Thu 7/8

17:15-18:50

Nonstop1h 35m

£80

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Fri 20/6

17:35-22:25

1 stop4h 50m

£93

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Wed 2/4

20:00-21:35

Nonstop1h 35m

£114

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Sun 20/4

10:00-13:35

1 stop3h 35m

£171

Flights are sorted by cheapest return flights first.

Deals found on 28/3

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.
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

How far ahead should I book a flight from Portsmouth to Dublin?

Use this chart to determine the optimal time to book a return flight from Portsmouth to Dublin. Price data was last updated on 21 March 2025.

The best time to book flights from Portsmouth to Dublin is 51 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.

What is the cheapest month to book a flight from Portsmouth to Dublin?

Currently, January is the cheapest month in which you can book a flight from Portsmouth to Dublin (average of £71). Flying from Portsmouth to Dublin in June is currently the most expensive (average of £100). 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 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 28 March 2025.

When flying from Portsmouth to Dublin, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 16 December 2024.

Travellers seeking maximum savings on their Portsmouth to Dublin flight should consider departing on Friday at midday when fares are most often at their lowest. Friday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in Dublin by month

Plan your trip to Dublin by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Dublin ranges from 49.0 - 79.0 inches per month. October is typically the wettest month, when rainfall can reach 79.0 mm. February is typically the driest time to visit Dublin when rainfall is around 49.0 mm.

Temperature in Dublin by month

Plan your trip to Dublin by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Dublin, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

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 28 March 2025.
KLM
7.8
Good
1,321 reviews
Check prices

Comfort

7.7

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
KLM
7.8
Good
1,321 reviews
KLM
7.8
Good
1,321 reviews
Check prices

Comfort

7.7

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
Aer Lingus
7.0
Good
1,062 reviews
KLM
7.8
Good
1,321 reviews
Check prices

Comfort

7.7

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.
British Airways
6.6
Okay
6,713 reviews
KLM
7.8
Good
1,321 reviews
Check prices

Comfort

7.7

Crew

8.4

Entertainment

7.1

Food

7.3

Boarding

7.8

Overall

7.8

Reviews

1 / 20
8.0
Excellent

Anonymous,Mar 2025

LBA - AMS

Overall, the flight from Leeds Bradford to Amsterdam was at expected. The crew were efficient at boarding and professional on board. The only issue was extremely slow check in at Leeds Bradford which was very frustrating.

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 2 flights from Portsmouth to Dublin per day from 4 different airlines.

  • What are the cheapest airlines to fly from Portsmouth to Dublin one-way?

    £80 is the cheapest one-way deal found within the past few days, from Aer Lingus. You may also be able to find cheap deals on KLM and British Airways, with prices starting from £93 and £114, respectively.

  • 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: Kenya Airways (94%), Japan Airlines (90%), LATAM Airlines (89%).

  • What are the cheapest flights from Portsmouth to Dublin?

    Looking at all options, your cheapest flight can be booked for £78. While the most popular route (Southampton Eastleigh - Dublin) can be booked for £53 on average our data indicates £1,208 when flying from Portsmouth to Dublin.

  • Can I find deals for flights from Portsmouth to Dublin that include hotel bookings?

    Yes. In addition to deals on Portsmouth to Dublin flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portsmouth to Dublin?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights 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.

  • What is the cheapest month to book a flight from Portsmouth to Dublin?

    Currently, January is the cheapest month in which you can book a flight from Portsmouth to Dublin (average of £71). Flying from Portsmouth to Dublin in June is currently the most expensive (average of £100). 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.

See more FAQs

Travelling to a place near Portsmouth?

Book flights to Portsmouth if you plan to visit one of these locations
Wicklow
Bray
Drogheda
Tullamore
Malahide
Portmarnock
Athlone
Carlingford
Cavan
Kildare
Mullingar
Enniscorthy
Dundalk
Arklow
Maynooth
Castleknock
Swords
Naas

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Alternative routes for Portsmouth to Dublin

See prices for flight routes from nearby airports that may be better suited for you.
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Top 4 airlines flying from Portsmouth to Dublin

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 28 March 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£27Average£57FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£56Average£133FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£63Average£142FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
KLMCheapest£130Average£146FlexibilityNo cancel feeOn-time75%
Search KLM flights

Fly with Cheapflights

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How does Cheapflights help users find flights from Portsmouth to Dublin?

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Users can book flights with no change fees policies with our dedicated filters. Book flights from Portsmouth to Dublin flexibly with Cheapflights today.

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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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