Question 1

What is the cheapest day to fly from Dublin to Portsmouth?

Accepted Answer

Travellers seeking maximum savings on their Dublin to Portsmouth flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Question 2

Weekly flight availability from Dublin to Portsmouth

Accepted Answer

The most flights from DUB to P0R are scheduled on a Friday (74 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (50 on average).

Question 3

E

Accepted Answer

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.

Question 4

E

Accepted Answer

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).

Question 5

What are the cheapest flights from Dublin to Portsmouth?

Accepted Answer

Looking for the cheapest flight from Dublin to Portsmouth? While on average our users pay £1,381, our data indicates the cheapest price to be £44. The most popular route (Dublin - Southampton Eastleigh), is priced around £98.

Question 6

What are the most reliable airlines from Dublin to Portsmouth?

Accepted Answer

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: Air Canada (84%), Aer Lingus (77%), British Airways (76%).

Question 7

What is the cheapest time of day to fly from DUB to P0R?

Accepted Answer

It’s optimal to fly from Dublin to Portsmouth in the evening. By choosing this option you can save up to 51% on the cost of your flight, compared to a flight in the afternoon.

Question 8

What airport do you fly from for flights from Dublin to Portsmouth?

Accepted Answer

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 6 outbound flights to Portsmouth per day. 3 airlines have flights to Portsmouth from Dublin on a regular basis.

Question 9

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

Accepted Answer

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

Question 10

How can I find direct flights from Dublin to Portsmouth?

Accepted Answer

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

Question 11

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

Accepted Answer

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.

Question 12

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

Accepted Answer

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.

Question 13

Why should you use Cheapflights to find cheap flight tickets from Dublin to Portsmouth?

Accepted Answer

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.

Question 14

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

Accepted Answer

Users can book flights with no change fees policies with our dedicated filters. Book flights from Dublin to Portsmouth flexibly with Cheapflights today.

Question 15

Can Cheapflights notify me if prices for flights from Dublin to Portsmouth become cheaper?

Accepted Answer

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.

Popular in	June
Cheapest in	December
Average price	£122

Airline	Cheapest	Average	Flexibility	On-time
Ryanair	Cheapest£29	Average£76	FlexibilityNo cancel fee	On-timeN/A	Search Ryanair flights
British Airways	Cheapest£74	Average£147	FlexibilityNo cancel fee	On-time70%	Search British Airways flights
Aer Lingus	Cheapest£96	Average£143	FlexibilityNo cancel fee	On-timeN/A	Search Aer Lingus flights

Cheap flights from Dublin to Portsmouth

Find flight deals from Dublin to Portsmouth

Popular in

Cheapest in

Average price

Cheapflights Insights

What is the cheapest time of day to fly from DUB to P0R?

It’s optimal to fly from Dublin to Portsmouth in the evening. By choosing this option you can save up to 51% on the cost of your flight, compared to a flight in the afternoon.

What is the cheapest day to fly from Dublin to Portsmouth?

Travellers seeking maximum savings on their Dublin to Portsmouth flight should consider departing on Tuesday afternoons when fares are most often at their lowest. Sunday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Dublin to Portsmouth

The most flights from DUB to P0R are scheduled on a Friday (74 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (50 on average).

Reviews of airlines servicing Portsmouth

Get a feel of what it's like to fly with Aer Lingus from Dublin to Portsmouth by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

What airport do you fly from for flights from Dublin to Portsmouth?

What are the most reliable airlines from Dublin to Portsmouth?

What are the cheapest flights from Dublin to Portsmouth?

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

How can I find direct flights from Dublin to Portsmouth?

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

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.

Complete your trip

Complete your trip to Portsmouth by adding a car hire and/or hotel booking to your travel itinerary.

Direct flights to England

Book a non-stop flight to one of these other cities located in England.

Search flights from Dublin to Portsmouth by cabin class

Find flights from Dublin to Portsmouth, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Dublin and Portsmouth flights

Browse other Dublin and Portsmouth flight options. Last updated on 12 October 2026.

Other flights from Dublin

Browse through other flights departing from Dublin. Flights are based on user searches made on Cheapflights and were last updated on 12 October 2026.

Popular flight searches

Check out other popular destinations found by fellow travellers in 2026

Dublin to Portsmouth flights

Consider these flights travelling from Dublin to Portsmouth.

Top 3 airlines flying from Dublin to Portsmouth

Fly with Cheapflights

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

Why should you use Cheapflights to find cheap flight tickets from Dublin to Portsmouth?

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

Can Cheapflights notify me if prices for flights from Dublin to Portsmouth become cheaper?

100% Free

Book with Flexibility

Travel Smart