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Cheap flights from Dublin to Portsmouth from £28

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 8/4. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
5 Apr — 12 Apr1
1 adult

Cheapflights Tip: The best prices from Dublin to Portsmouth are usually found in December or January, booked 34 days in advance, depart on a Wednesday or Tuesday 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 31 March 2025.

Round-trip from

£49

One-way from

£28

Popular in

June

Cheapest in

December

Average price

£110
Aer Lingus
  • Aer Lingus
  • 15/5-22/5
  • Nonstop
  • 3h 15m total
  • Dublin to Portsmouth
Search Deals
Aer Lingus
  • Aer Lingus
  • 8/4
  • Nonstop
  • 1h 40m total
  • Dublin to Portsmouth
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£33 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from Dublin to Portsmouth

Cheapest flights from Dublin to Portsmouth
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 31 March 2025.

Thu 15/507:00DUB - SOU
Nonstop1h 40mAer Lingus
Thu 22/520:00SOU - DUB
Nonstop1h 35mAer Lingus
Deal found 30/3£49
Thu 8/507:00DUB - SOU
Nonstop1h 40mMultiple Airlines
Tue 20/512:25SOU - DUB
1 stop4h 30mMultiple Airlines
Deal found 30/3£97
Thu 19/605:55DUB - SOU
1 stop11h 05mKLM
Mon 23/609:20SOU - DUB
1 stop10h 55mKLM
Deal found 31/3£172
Fri 1/817:50DUB - SOU
Nonstop1h 40mBritish Airways
Sun 3/820:00SOU - DUB
Nonstop1h 35mBritish Airways
Deal found 31/3£227
Fri 1/813:00DUB - SOU
1 stop6h 00mBlue Islands
Sun 3/820:00SOU - DUB
1 stop16h 20mBlue Islands
Deal found 31/3£404

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

Fly from

Dublin

Fly to

Portsmouth

Route

Depart

Return

Price

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 15/5

07:00-08:40

Nonstop1h 40m

Southampton Eastleigh

Thu 22/5

20:00-21:35

Nonstop1h 35m

£49

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 8/5

07:00-08:40

Nonstop1h 40m

Southampton Eastleigh

Tue 20/5

12:25-16:55

1 stop4h 30m

£97

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 19/6

05:55-17:00

1 stop11h 05m

Southampton Eastleigh

Mon 23/6

09:20-20:15

1 stop10h 55m

£172

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 15/5

14:45-16:35

Nonstop1h 50m

Southampton Eastleigh

Sun 18/5

20:00-21:35

Nonstop1h 35m

£227

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Fri 25/4

13:00-10:55

1 stop21h 55m

Southampton Eastleigh

Sun 27/4

20:00-12:20

1 stop16h 20m

£511

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Tue 8/4

06:35-08:15

Nonstop1h 40m

£28

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Sun 4/5

10:20-16:05

1 stop5h 45m

£82

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Wed 7/5

20:45-08:45

1 stop12h 00m

£85

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Sat 26/4

07:00-08:40

Nonstop1h 40m

£104

Flights are sorted by cheapest return flights first.

Deals found on 30/3

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.
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 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 28 March 2025.

Booking 34 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 31 March 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 Wednesday mornings 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 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 31 March 2025.

The most flights from DUB to P0R are scheduled on a Monday (73 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (37 on average).

Rainfall in Portsmouth by month

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

In terms of precipitation, rainfall in Portsmouth ranges from 25.0 - 76.0 inches per month. December is typically the wettest month, when rainfall can reach 76.0 mm. July is typically the driest time to visit Portsmouth when rainfall is around 25.0 mm.

Temperature in Portsmouth by month

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

If weather is an important factor for your trip to Portsmouth, 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 18.0 C. Travellers hoping to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 4.0 C).

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 31 March 2025.
See what other customers who have flown with KLM, Aer Lingus and British Airways from Dublin to Portsmouth have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
KLM
7.8
Good
1,321 reviews
Check prices

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.8

Comfort

7.7

Entertainment

7.1

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

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.8

Comfort

7.7

Entertainment

7.1

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
1,061 reviews
KLM
7.8
Good
1,321 reviews
Check prices

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.8

Comfort

7.7

Entertainment

7.1

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

Boarding

7.8

Crew

8.4

Food

7.3

Overall

7.8

Comfort

7.7

Entertainment

7.1

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 Dublin to Portsmouth. 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 from for flights from Dublin to Portsmouth?

    For a flight from Dublin to Portsmouth, you will be flying from Dublin. Dublin (DUB) is just 5.7 mi from the center of the city. Dublin is the only Dublin airport and it handles 2 outbound flights to Portsmouth per day. 3 airlines have flights to Portsmouth from Dublin on a regular basis.

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

    One-way options have recently been found by users for as low as £28 on Aer Lingus. Other airlines that offer cheap prices include KLM from £85 and British Airways from £104 one-way.

  • What are the most reliable airlines from Dublin to Portsmouth?

    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 Dublin to Portsmouth on time: Japan Airlines (84%), British Airways (83%), Air Canada (83%).

  • What are the cheapest flights from Dublin to Portsmouth?

    Looking for the cheapest flight from Dublin to Portsmouth? While on average our users pay £1,341, our data indicates the cheapest price to be £45. The most popular route (Dublin - Southampton Eastleigh), is priced around £53.

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

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

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

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

  • Can I find deals for business class flights from Dublin to Portsmouth?

    Yes. Cheapflights offers flight deals from Dublin to Portsmouth 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 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.

See more FAQs

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Alternative routes for Dublin to Portsmouth

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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 31 March 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£27Average£69FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£59Average£115FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£64Average£132FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

Fly with Cheapflights

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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?

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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.

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