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Cheap flights from Dublin to Portsmouth from £40

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 10/4. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LHR
27 Feb — 6 Mar1
1 adult

The best prices from Dublin to Portsmouth are usually found in December or January, booked 15 days in advance, depart on a Wednesday or Tuesday and return on a Tuesday

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 22 February 2025.

Round-trip from

£95

One-way from

£40

Popular in

June

Cheapest in

December

Average price

£123
Aer Lingus
  • Aer Lingus
  • 6/3-10/3
  • Nonstop
  • 3h 25m total
  • Dublin to Portsmouth
Search Deals
Aer Lingus
  • Aer Lingus
  • 10/4
  • Nonstop
  • 1h 40m total
  • Dublin to Portsmouth
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£37 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 February 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 22 February 2025.

Thu 6/307:00DUB - SOU
Nonstop1h 45mAer Lingus
Mon 10/320:10SOU - DUB
Nonstop1h 40mAer Lingus
Deal found 21/2£95
Thu 24/407:00DUB - SOU
Nonstop1h 40mMultiple Airlines
Tue 29/412:25SOU - DUB
1 stop11h 00mMultiple Airlines
Deal found 21/2£104
Fri 9/520:45DUB - SOU
1 stop12h 00mKLM
Sun 11/518:25SOU - DUB
1 stop4h 00mKLM
Deal found 21/2£170
Fri 7/307:00DUB - SOU
Nonstop1h 45mBritish Airways
Fri 14/320:10SOU - DUB
Nonstop1h 40mBritish Airways
Deal found 20/2£221

Find flights from Dublin to Portsmouth within your budget

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 22 February 2025.

Fly from

Dublin

Fly to

Portsmouth

Route

Depart

Return

Price

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 6/3

07:00-08:45

Nonstop1h 45m

Southampton Eastleigh

Mon 10/3

20:10-21:50

Nonstop1h 40m

£95

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 24/4

07:00-08:40

Nonstop1h 40m

Southampton Eastleigh

Tue 29/4

12:25-23:25

1 stop11h 00m

£104

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Fri 9/5

20:45-08:45

1 stop12h 00m

Southampton Eastleigh

Sun 11/5

18:25-22:25

1 stop4h 00m

£170

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Fri 7/3

07:00-08:45

Nonstop1h 45m

Southampton Eastleigh

Fri 14/3

20:10-21:50

Nonstop1h 40m

£221

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 10/4

07:00-08:40

Nonstop1h 40m

£40

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Tue 4/3

15:00-08:50

1 stop17h 50m

£70

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Thu 10/4

20:45-08:45

1 stop12h 00m

£84

DublinSouthampton

DUB - SOU

DUBSOU

Dublin

Mon 3/3

07:00-08:45

Nonstop1h 45m

£100

Flights are sorted by cheapest return flights first.

Deals found on 21/2

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.

Travel insights for flights from Dublin to Portsmouth

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

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 14 February 2025.

Booking 15 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 £163). 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 22 February 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 22 February 2025.

The most flights from DUB to P0R are scheduled on a Saturday (69 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (46 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 22 February 2025.
KLM
7.8
Good
1,332 reviews
Check prices

Crew

8.4

Entertainment

7.2

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

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

Entertainment

7.2

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

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
1,070 reviews
KLM
7.8
Good
1,332 reviews
Check prices

Crew

8.4

Entertainment

7.2

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

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

Entertainment

7.2

Food

7.3

Boarding

7.8

Overall

7.8

Comfort

7.7

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 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 4 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 £40 on Aer Lingus. Other airlines that offer cheap prices include KLM from £84 and British Airways from £100 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: LATAM Airlines (77%), Kenya Airways (73%), British Airways (70%).

  • What are the cheapest flights from Dublin to Portsmouth?

    Looking for the cheapest flight from Dublin to Portsmouth? While on average our users pay £1,170, our data indicates the cheapest price to be £36. The most popular route (Dublin - Southampton Eastleigh), is priced around £98.

  • 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 £163). 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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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 22 February 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£31Average£70FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
British AirwaysCheapest£58Average£114FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£62Average£130FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights

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

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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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