Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Dublin to Portsmouth from £43

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 6/6. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
28 Apr — 5 May1
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 23 April 2025.

Round-trip from

£56

One-way from

£43

Popular in

June

Cheapest in

December

Average price

£117
Aer Lingus
  • Aer Lingus
  • 2/6-4/6
  • Nonstop
  • 3h 20m total
  • Dublin to Portsmouth
Search Deals
Aer Lingus
  • Aer Lingus
  • 6/6
  • Nonstop
  • 1h 40m total
  • Dublin to Portsmouth
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£31 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 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 23 April 2025.

Mon 2/607:30DUB - SOU
Nonstop1h 40mAer Lingus
Thu 5/620:00SOU - DUB
Nonstop1h 35mAer Lingus
Deal found 22/4£56
Tue 3/618:20DUB - SOU
1 stop14h 10mMultiple Airlines
Tue 10/620:00SOU - DUB
Nonstop1h 35mMultiple Airlines
Deal found 22/4£97
Thu 22/520:45DUB - SOU
1 stop12h 00mKLM
Thu 29/509:20SOU - DUB
1 stop7h 20mKLM
Deal found 22/4£176
Sun 4/506:55DUB - SOU
Nonstop1h 40mBritish Airways
Mon 5/520:00SOU - DUB
Nonstop1h 35mBritish Airways
Deal found 22/4£231
Tue 17/612:45DUB - SOU
1 stop18h 45mAurigny Air
Tue 24/608:00SOU - DUB
1 stop4h 00mAurigny Air
Deal found 23/4£326

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 23 April 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

Mon 2/6

07:30-09:10

Nonstop1h 40m

Southampton Eastleigh

Thu 5/6

20:00-21:35

Nonstop1h 35m

£56

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Tue 3/6

18:20-08:30

1 stop14h 10m

Southampton Eastleigh

Tue 10/6

20:00-21:35

Nonstop1h 35m

£97

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 22/5

20:45-08:45

1 stop12h 00m

Southampton Eastleigh

Thu 29/5

09:20-16:40

1 stop7h 20m

£176

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Sun 4/5

06:55-08:35

Nonstop1h 40m

Southampton Eastleigh

Mon 5/5

20:00-21:35

Nonstop1h 35m

£231

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Tue 17/6

12:45-07:30

1 stop18h 45m

Southampton Eastleigh

Tue 24/6

08:00-12:00

1 stop4h 00m

£326

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Fri 6/6

07:00-08:40

Nonstop1h 40m

£43

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Fri 6/6

20:45-08:45

1 stop12h 00m

£88

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Sat 16/8

21:45-11:45

2 stops14h 00m

£94

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Sat 16/8

07:00-08:40

Nonstop1h 40m

£106

Flights are sorted by cheapest return flights first.

Deals found on 21/4

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 18 April 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 23 April 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 23 April 2025.

The most flights from DUB to P0R are scheduled on a Tuesday (76 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (40 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 23 April 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
1,333 reviews
Check prices

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

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
1,333 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

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
1,067 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

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
6,798 reviews
KLM
7.8
Good
1,333 reviews
Check prices

Entertainment

7.1

Food

7.2

Crew

8.4

Overall

7.8

Comfort

7.7

Boarding

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 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 3 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 £43 on Aer Lingus. Other airlines that offer cheap prices include KLM from £88 and British Airways from £106 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: Aer Lingus (82%), Air Canada (82%), British Airways (82%).

  • What are the cheapest flights from Dublin to Portsmouth?

    Looking for the cheapest flight from Dublin to Portsmouth? While on average our users pay £1,210, our data indicates the cheapest price to be £44. The most popular route (Dublin - Southampton Eastleigh), is priced around £56.

  • 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

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 Dublin to Portsmouth

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

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 23 April 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£27Average£68FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£58Average£111FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£62Average£134FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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 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?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Dublin to Portsmouth for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Dublin to Portsmouth with no change fees?

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.

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