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Cheap flights from Ireland to Portugal from £24

DUB — LIS
21 Sep — 28 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to Portugal

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to Portugal

Tue 22/909:20 -
1 stop6h 30m
Tue 22/922:25 -
Nonstop2h 25m
Deal found 18/8£67
Sat 10/1018:25 -
Nonstop2h 25m
Mon 12/1007:20 -
1 stop15h 25m
Deal found 18/8£75
Thu 8/1006:25 -
Nonstop2h 55m
Wed 14/1009:05 -
Nonstop2h 55m
Deal found 22/8£78
Sun 13/907:05 -
1 stop11h 40m
Fri 18/910:20 -
Nonstop2h 55m
Deal found 19/8£80
Tue 20/1005:50 -
1 stop7h 00m
Wed 21/1015:15 -
1 stop9h 45m
Deal found 20/8£81
Thu 10/916:35 -
1 stop5h 40m
Tue 15/910:45 -
Nonstop2h 55m
Deal found 19/8£82
Sat 19/918:35 -
Nonstop2h 55m
Fri 25/912:25 -
Nonstop2h 55m
Deal found 21/8£84
Thu 24/917:25 -
Nonstop2h 55m
Sun 27/908:05 -
Nonstop2h 55m
Deal found 21/8£84
Sat 17/1012:45 -
1 stop5h 55m
Sun 18/1008:05 -
Nonstop2h 55m
Deal found 18/8£85
Sat 10/1021:15 -
1 stop10h 45m
Mon 12/1007:20 -
1 stop15h 25m
Deal found 18/8£86
Fri 2/1017:30 -
Nonstop2h 55m
Mon 5/1007:50 -
Nonstop2h 55m
Deal found 18/8£87
Sat 19/913:30 -
1 stop7h 40m
Wed 23/922:30 -
1 stop11h 40m
Deal found 21/8£87

Find flight deals from Ireland to Portugal

Round-trip from

£67

One-way from

£24

Popular in

July

Cheapest in

January

Average price

£147

Good round-trip deal

£116 or less

Good one-way deal

£51 or less
Ryanair
  • Ryanair
  • 22/9-22/9
  • 1 total stop
  • 8h 55m total
  • Ireland to Portugal
Search Deals
Ryanair
  • Ryanair
  • 15/9
  • Nonstop
  • 2h 55m total
  • Ireland to Portugal
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£41 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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Price to beat on a round-trip flight from Ireland to Portugal.
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Price to beat on a one-way flight from Ireland to Portugal.
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Cheapflights Fare Finder

 
Use the filters below to find and compare flights from Ireland to Portugal that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Thu 8/10

19:30-21:55

Nonstop2h 25m

Porto

Sat 10/10

21:15-23:40

Nonstop2h 25m

£87

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Wed 7/10

20:45-23:10

Nonstop2h 25m

Porto

Sat 10/10

21:15-23:40

Nonstop2h 25m

£94

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Wed 28/10

06:50-09:40

Nonstop2h 50m

Lisbon Humberto Delgado

Sat 31/10

06:10-09:00

Nonstop2h 50m

£108

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Mon 14/9

19:35-22:00

Nonstop2h 25m

Porto

Thu 17/9

22:20-00:45

Nonstop2h 25m

£108

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Sat 17/10

18:25-20:50

Nonstop2h 25m

Porto

Wed 21/10

17:55-20:20

Nonstop2h 25m

£119

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Wed 9/9

11:45-14:35

Nonstop2h 50m

Lisbon Humberto Delgado

Sat 19/9

09:50-12:35

Nonstop2h 45m

£132

DublinFaro

DUB Dublin - FAO Faro

DUBFAO

Dublin

Fri 23/10

14:25-17:20

Nonstop2h 55m

Faro

Tue 27/10

07:50-10:50

Nonstop3h 00m

£141

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Mon 14/9

22:05-09:00

1 stop10h 55m

Porto

Fri 18/9

14:30-00:10

2 stops9h 40m

£141

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Sat 17/10

05:55-18:10

1 stop12h 15m

Porto

Wed 21/10

05:00-10:25

1 stop5h 25m

£152

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Mon 7/9

06:05-22:15

1 stop16h 10m

Lisbon Humberto Delgado

Tue 15/9

05:55-17:50

1 stop11h 55m

£155

Flights are sorted by cheapest return flights first.

Deals found on 18/8

Showing 1-10 of 48 resultsSorted by cheapest first
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Best time to book a flight from Ireland to Portugal

Have a flexible travel schedule? Discover the best time to fly to Portugal from Ireland with our price prediction graph.
Estimated return price

Cheapflights Insights

Everything you need to know about your flight from Ireland to Portugal

What is the cheapest month to book a flight from Ireland to Portugal?

Currently, January is the cheapest month in which you can book a flight from Ireland to Portugal (average of £95). Flying from Ireland to Portugal in July is currently the most expensive (average of £210). 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 IE to PT?

Unlike in the evening, when flights are generally more expensive, you can save up to 40% on flights from Ireland to Portugal by exploring options for tickets at midday.

How often are flights from Ireland to Portugal delayed?

About 18% of weekly flights between Ireland and Portugal have experienced delays in the past year, with the average delay time being 111 minutes.

What is the most punctual flight time for Ireland to Portugal flights?

Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.

What day of the week experiences the fewest flight delays on this route?

Tuesday tends to have the lowest number of delays on this route, whereas Friday has historically faced a higher average of delays compared to other days of the week.

Which airline has the best punctuality record on Ireland to Portugal flights?

Over the past year, Aer Lingus have had the lowest number of delays on this route, with just 11% of flights being delayed.

How far ahead should I book a flight from Ireland to Portugal?

To ensure you get the cheapest price possible for a flight from Ireland to Portugal, you should look to book at least 60 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest day to fly from Ireland to Portugal?

Travellers seeking maximum savings on their Ireland to Portugal flight should consider departing on Wednesday at midday when fares are most often at their lowest. Friday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Portugal

Check out reviews from past customers who have flown with Aer Lingus,TAP AIR PORTUGAL, andRyanair from Ireland to Portugal to help guide your decision. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.3
Good
1,715 reviews
Check prices

Boarding

7.5

Crew

8.1

Entertainment

7.0

Comfort

7.2

Overall

7.3

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2026

DUB - BCN

Would have been nice to have a plane that was equipped with a screen to watch a movie enroute to Barcelona, but all good. Flight and crew was excellent. Much appreciated the updates from captain and Kayak about the flight delay due the weather. It’s nice to be kept informed. Will Aer Lingus for future flights, and definitely through Kayak
Aer Lingus
7.3
Good
1,715 reviews
Aer Lingus
7.3
Good
1,715 reviews
Check prices

Boarding

7.5

Crew

8.1

Entertainment

7.0

Comfort

7.2

Overall

7.3

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2026

DUB - BCN

Would have been nice to have a plane that was equipped with a screen to watch a movie enroute to Barcelona, but all good. Flight and crew was excellent. Much appreciated the updates from captain and Kayak about the flight delay due the weather. It’s nice to be kept informed. Will Aer Lingus for future flights, and definitely through Kayak
TAP AIR PORTUGAL
7.2
Good
2,371 reviews
Aer Lingus
7.3
Good
1,715 reviews
Check prices

Boarding

7.5

Crew

8.1

Entertainment

7.0

Comfort

7.2

Overall

7.3

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2026

DUB - BCN

Would have been nice to have a plane that was equipped with a screen to watch a movie enroute to Barcelona, but all good. Flight and crew was excellent. Much appreciated the updates from captain and Kayak about the flight delay due the weather. It’s nice to be kept informed. Will Aer Lingus for future flights, and definitely through Kayak
Ryanair
6.9
Okay
5,474 reviews
Aer Lingus
7.3
Good
1,715 reviews
Check prices

Boarding

7.5

Crew

8.1

Entertainment

7.0

Comfort

7.2

Overall

7.3

Food

6.7

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2026

DUB - BCN

Would have been nice to have a plane that was equipped with a screen to watch a movie enroute to Barcelona, but all good. Flight and crew was excellent. Much appreciated the updates from captain and Kayak about the flight delay due the weather. It’s nice to be kept informed. Will Aer Lingus for future flights, and definitely through Kayak

Related info for your journey

  • How popular is this Ireland to Portugal flight route?

    This flight path from Ireland to Portugal was viewed by 283 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

  • How long is the flight from Ireland to Portugal?

    For as low as £67, Ryanair can have you in Portugal from Ireland in 6h 30m. Airlines will cover a distance of 848 mi.

  • What are the cheapest airlines to fly from Ireland to Portugal one-way?

    £21 is the cheapest one-way deal found within the past few days, from Ryanair. You may also be able to find cheap deals on Aer Lingus and TAP AIR PORTUGAL, with prices starting from £35 and £56, respectively.

  • Can I find deals for flights from Ireland to Portugal that include hotel bookings?

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

  • How can I find direct flights from Ireland to Portugal?

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

  • Can I find deals for business class flights from Ireland to Portugal?

    Yes. Cheapflights offers flight deals from Ireland to Portugal 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 Ireland to Portugal?

    Currently, January is the cheapest month in which you can book a flight from Ireland to Portugal (average of £95). Flying from Ireland to Portugal in July is currently the most expensive (average of £210). 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

Top 3 airlines flying from Ireland to Portugal

AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£54Average£154FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£61Average£194FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£102Average£171FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

Fly with Cheapflights

How does Cheapflights help users find flights from Ireland to Portugal?

900+ travel sites are searched through when a user searches for a flight using Cheapflights. From the search interface, users can use filters to choose airlines, airports, flight times, cabin classes and more to their preference. Book your flight to Portugal from Ireland today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Ireland to Portugal?

Cheapflights simply makes it quick and affordable to book flights from Ireland to Portugal by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Ireland to Portugal with no change fees?

Cheapflights does show flights with no change fees to all users. To see these options for flights from Ireland to Portugal, users can toggle the no change fees filter when performing a flight search.

Can Cheapflights notify me if prices for flights from Ireland to Portugal become cheaper?

Yes, Cheapflights offers price alerts on Ireland to Portugal flights so you can book your travel at the perfect time. Price Alerts can be enabled by clicking the bell icon next to the flight deals above and providing your email address where you want to receive the alerts.

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