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Cheap flights from Portsmouth to Dublin from £88

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 22/5. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
27 Feb — 6 Mar1
1 adult

The best prices from Portsmouth to Dublin are usually found in January or November, booked 37 days in advance, depart on a Tuesday or Monday 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 22 February 2025.

Round-trip from

£100

One-way from

£88

Popular in

June

Cheapest in

January

Average price

£131
Aer Lingus
  • Aer Lingus
  • 8/4-15/4
  • Nonstop
  • 3h 15m total
  • Portsmouth to Dublin
Search Deals
Aer Lingus
  • Aer Lingus
  • 22/5
  • Nonstop
  • 1h 35m total
  • Portsmouth to Dublin
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£21 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease (£3 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 22 February 2025.

Tue 8/420:00SOU - DUB
Nonstop1h 35mAer Lingus
Tue 15/406:35DUB - SOU
Nonstop1h 40mAer Lingus
Deal found 22/2£100
Mon 28/415:25SOU - DUB
1 stop7h 25mMultiple Airlines
Wed 30/406:25DUB - SOU
Nonstop1h 40mMultiple Airlines
Deal found 22/2£107
Sat 22/317:20SOU - DUB
1 stop4h 45mKLM
Sat 29/305:55DUB - SOU
1 stop10h 55mKLM
Deal found 22/2£136
Mon 24/320:10SOU - DUB
Nonstop1h 40mBritish Airways
Mon 31/307:30DUB - SOU
Nonstop1h 40mBritish Airways
Deal found 22/2£220
Sun 11/509:50SOU - DUB
1 stop25h 55mHahn Air
Fri 25/712:25DUB - SOU
2 stops6h 40mHahn Air
Deal found 22/2£503

Find flights from Portsmouth to Dublin within your budget

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 22 February 2025.

Fly from

Portsmouth

Fly to

Dublin

Route

Depart

Return

Price

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Tue 8/4

20:00-21:35

Nonstop1h 35m

Dublin

Tue 15/4

06:35-08:15

Nonstop1h 40m

£100

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Mon 28/4

15:25-22:50

1 stop7h 25m

Dublin

Wed 30/4

06:25-08:05

Nonstop1h 40m

£107

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Sat 22/3

17:20-22:05

1 stop4h 45m

Dublin

Sat 29/3

05:55-16:50

1 stop10h 55m

£136

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Mon 24/3

20:10-21:50

Nonstop1h 40m

Dublin

Mon 31/3

07:30-09:10

Nonstop1h 40m

£220

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Sun 11/5

09:50-11:45

1 stop25h 55m

Dublin

Fri 25/7

12:25-19:05

2 stops6h 40m

£503

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Thu 22/5

20:00-21:35

Nonstop1h 35m

£88

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Thu 3/4

17:35-22:25

1 stop4h 50m

£93

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Wed 12/3

16:10-20:45

2 stops28h 35m

£111

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Wed 26/3

09:30-11:10

Nonstop1h 40m

£115

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Mon 21/4

19:50-12:00

1 stop16h 10m

£141

Flights are sorted by cheapest return flights first.

Deals found on 22/2

Showing 1-10 of 11 results
1
2

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.

Travel insights for flights from Portsmouth to Dublin

Get recent, data-driven insights about flights from Portsmouth to Dublin including ideal travel times, pricing trends, and more.

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 14 February 2025.

The best time to book flights from Portsmouth to Dublin is 37 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 £104). 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 22 February 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.

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 22 February 2025.

The most flights from P0R to DUB are scheduled on a Thursday (67 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (37 on average).

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 22 February 2025.
Peruse reviews from past customers who have flown with KLM, Aer Lingus and British Airways from Portsmouth to Dublin to help guide your decision. In addition to providing an overall rating, users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,332 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.8

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

KLM
7.8
Good
1,332 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.8

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

Aer Lingus
7.0
Good
1,071 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.8

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

British Airways
6.6
Okay
6,761 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Crew

8.4

Overall

7.8

Food

7.3

Comfort

7.7

Entertainment

7.2

Boarding

7.8

Reviews

1 / 20

8.0
Excellent

Anonymous,Dec 2024

YWG - YYZ

I could not select a seat prior to check in as systems not integrated. Different PNRs should be on reservation which would make process easier.

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 4 flights from Portsmouth to Dublin per day from 5 different airlines.

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

    £88 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 £115, 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 (76%), Qatar Airways (76%), Aer Lingus (74%).

  • What are the cheapest flights from Portsmouth to Dublin?

    Looking at all options, your cheapest flight can be booked for £74. While the most popular route (Southampton Eastleigh - Dublin) can be booked for £106 on average our data indicates £417 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 £104). 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
Bray
Wicklow
Athlone
Drogheda
Tullamore
Carlingford
Malahide
Mullingar
Enniscorthy
Dundalk
Arklow
Cavan
Kildare
Castleknock
Naas
Swords
Portmarnock

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Top 5 airlines flying from Portsmouth to Dublin

Discover the top 5 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 22 February 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£28Average£59FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£54Average£131FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£61Average£140FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
KLMCheapest£133Average£148FlexibilityNo cancel feeOn-time75%
Search KLM flights
LufthansaCheapest£148Average£204FlexibilityNo cancel feeOn-time76%
Search Lufthansa flights

Fly with Cheapflights

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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.

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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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