Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Portsmouth to Dublin 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 29/7. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — DUB
18 Jun — 25 Jun1
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 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 13 June 2025.

Round-trip from

£81

One-way from

£37

Popular in

June

Cheapest in

January

Average price

£166
Aer Lingus
  • Aer Lingus
  • 24/7-29/7
  • Nonstop
  • 3h 15m total
  • Portsmouth to Dublin
Search Deals
Aer Lingus
  • Aer Lingus
  • 29/7
  • Nonstop
  • 1h 35m total
  • Portsmouth to Dublin
Search Deals
Highest demand for flights based on searches. 12% potential increase in price (£13 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 June 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 13 June 2025.

Wed 9/709:10SOU - DUB
Nonstop1h 40mAer Lingus
Wed 16/706:25DUB - SOU
Nonstop1h 40mAer Lingus
Deal found 10/6£79
Thu 24/720:00SOU - DUB
Nonstop1h 35mMultiple Airlines
Tue 29/718:20DUB - SOU
1 stop16h 00mMultiple Airlines
Deal found 12/6£113
Wed 9/718:25SOU - DUB
1 stop4h 00mKLM
Wed 16/720:45DUB - SOU
1 stop12h 00mKLM
Deal found 10/6£155
Fri 25/720:00SOU - DUB
Nonstop1h 35mBritish Airways
Mon 28/717:50DUB - SOU
Nonstop1h 40mBritish Airways
Deal found 11/6£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 13 June 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

Thu 24/7

20:00-21:35

Nonstop1h 35m

Dublin

Tue 29/7

07:00-08:40

Nonstop1h 40m

£81

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Thu 24/7

20:00-21:35

Nonstop1h 35m

Dublin

Tue 29/7

18:20-10:20

1 stop16h 00m

£113

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Wed 2/7

09:20-16:40

1 stop7h 20m

Dublin

Mon 7/7

20:45-08:50

1 stop12h 05m

£155

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Fri 25/7

20:00-21:35

Nonstop1h 35m

Dublin

Mon 28/7

17:50-19:30

Nonstop1h 40m

£219

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Thu 24/7

19:20-12:20

1 stop17h 00m

Dublin

Mon 28/7

13:00-08:05

1 stop19h 05m

£531

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Tue 29/7

20:00-21:35

Nonstop1h 35m

£37

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Tue 9/9

12:25-21:30

1 stop9h 05m

£71

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Tue 5/8

18:25-22:25

1 stop4h 00m

£96

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Sun 3/8

20:00-21:35

Nonstop1h 35m

£114

SouthamptonDublin

SOU - DUB

SOUDUB

Southampton Eastleigh

Mon 1/9

19:50-12:00

1 stop16h 10m

£140

Flights are sorted by cheapest return flights first.

Deals found on 11/6

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 9 June 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 August is currently the most expensive (average of £94). 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 13 June 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 13 June 2025.

The most flights from P0R to DUB are scheduled on a Thursday (73 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (32 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 13 June 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
1,358 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Aer Lingus
7.1
Good
1,118 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
British Airways
6.6
Okay
7,011 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Entertainment

7.1

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

7.8

Food

7.2

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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 4 different airlines.

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

    £37 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 £96 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: LATAM Airlines (91%), Aer Lingus (90%), British Airways (90%).

  • What are the cheapest flights from Portsmouth to Dublin?

    Looking at all options, your cheapest flight can be booked for £80. While the most popular route (Southampton Eastleigh - Dublin) can be booked for £72 on average our data indicates £574 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 August is currently the most expensive (average of £94). 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
Athlone
Bray
Tullamore
Malahide
Cavan
Drogheda
Portmarnock
Enniscorthy
Mullingar
Dundalk
Arklow
Carlingford
Kildare
Maynooth
Swords
Castleknock
Naas

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 Portsmouth to Dublin

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Dublin flights
Gatwick to Dublin flights
Luton to Dublin flights
Stansted to Dublin flights
London City to Dublin flights
Manchester to Dublin flights
Birmingham to Dublin flights
Bristol to Dublin flights
Southend to Dublin flights
Leeds to Dublin flights
Liverpool to Dublin flights
Edinburgh to Dublin flights
Heathrow to Cork flights
London City to Cork flights
Heathrow to Shannon flights
Newcastle upon Tyne to Dublin flights
Stansted to Cork flights
Gatwick to Cork flights
Bristol to Cork flights
Heathrow to Knock flights
Gatwick to Shannon flights
East Midlands to Dublin flights
Manchester to Cork flights
Luton to Cork flights
Stansted to Shannon flights
Southampton to Dublin flights
Luton to Knock flights
Stansted to Knock flights
Exeter to Dublin flights
Luton to Shannon flights
Luton to Milltown (Kerry) flights
Gatwick to Knock flights
Manchester to Shannon flights
Edinburgh to Cork flights
Liverpool to Cork flights
Stansted to Milltown (Kerry) flights
Newquay to Dublin flights
Gatwick to Milltown (Kerry) flights
Southend to Cork flights
Manchester to Knock flights
Heathrow to Milltown (Kerry) flights
Birmingham to Cork flights
Southend to Shannon flights
East Midlands to Knock flights
Edinburgh to Shannon flights
Southampton to Cork flights
Birmingham to Knock flights
Birmingham to Shannon flights
Leeds to Cork flights
London City to Shannon flights

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 13 June 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£26Average£76FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£44Average£136FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£60Average£138FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
KLMCheapest£126Average£140FlexibilityNo cancel feeOn-time75%
Search KLM flights

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 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.
Site
©2025 Cheapflights