Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Ireland to Portugal from £25

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 20/4. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LIS
3 Apr — 10 Apr1
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
Explore the most affordable flight options available from Ireland to Portugal. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 4 March 2026.

Wed 15/420:45
DUB
-
OPO
Nonstop2h 25m
Ryanair
Tue 21/422:25
OPO
-
DUB
Nonstop2h 25m
Ryanair
Deal found 27/2£34
Mon 13/406:00
DUB
-
FAO
Nonstop2h 55m
Ryanair
Mon 20/407:50
FAO
-
DUB
Nonstop2h 55m
Ryanair
Deal found 27/2£51
Sat 25/418:35
DUB
-
FAO
Nonstop2h 55m
Ryanair
Thu 7/516:40
FAO
-
DUB
Nonstop2h 55m
Ryanair
Deal found 28/2£52
Sat 25/418:35
DUB
-
FAO
Nonstop2h 55m
Ryanair
Sat 2/521:55
FAO
-
DUB
Nonstop2h 55m
Ryanair
Deal found 1/3£53
Mon 27/406:00
DUB
-
FAO
Nonstop2h 55m
Ryanair
Tue 5/508:00
FAO
-
DUB
Nonstop2h 55m
Ryanair
Deal found 1/3£55
Sat 25/418:35
DUB
-
FAO
Nonstop2h 55m
Ryanair
Tue 5/508:00
FAO
-
DUB
Nonstop2h 55m
Ryanair
Deal found 1/3£55
Tue 14/419:20
DUB
-
OPO
Nonstop2h 25m
Ryanair
Tue 21/422:25
OPO
-
DUB
Nonstop2h 25m
Ryanair
Deal found 28/2£56
Tue 28/406:30
DUB
-
FAO
1 stop5h 45m
Ryanair
Tue 5/508:00
FAO
-
DUB
Nonstop2h 55m
Ryanair
Deal found 1/3£66
Mon 27/417:00
DUB
-
FAO
Nonstop2h 55m
Ryanair
Mon 4/507:50
FAO
-
DUB
Nonstop2h 55m
Ryanair
Deal found 1/3£67
Sat 25/418:35
DUB
-
FAO
Nonstop2h 55m
Ryanair
Sun 3/508:05
FAO
-
DUB
Nonstop2h 55m
Ryanair
Deal found 1/3£69
Tue 5/518:40
DUB
-
LIS
Nonstop2h 55m
Multiple Airlines
Tue 12/506:30
LIS
-
DUB
Nonstop2h 45m
Multiple Airlines
Deal found 3/3£70
Mon 13/419:15
DUB
-
LIS
Nonstop2h 50m
Ryanair
Thu 16/410:55
LIS
-
DUB
1 stop5h 40m
Ryanair
Deal found 3/3£70

Find flight deals from Ireland to Portugal

Keep the following information in mind while searching for Ireland to Portugal flight deals. Data was last updated 4 March 2026.

Round-trip from

£34

One-way from

£25

Popular in

July

Cheapest in

January

Average price

£103

Good round-trip deal

£70 or less

Good one-way deal

£56 or less
Ryanair
  • Ryanair
  • 15/4-21/4
  • Nonstop
  • 4h 50m total
  • Ireland to Portugal
Search Deals
Ryanair
  • Ryanair
  • 20/4
  • Nonstop
  • 2h 55m total
  • Ireland to Portugal
Search Deals
Highest demand for flights based on searches. 29% potential increase in price (£46 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in March 2026
Search Deals
Price to beat on a round-trip flight from Ireland to Portugal.
Search Deals
Price to beat on a one-way flight from Ireland to Portugal.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ireland to Portugal 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 4 March 2026.
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

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Thu 19/3

17:15-20:05

Nonstop2h 50m

Lisbon Humberto Delgado

Wed 25/3

06:40-09:30

Nonstop2h 50m

£77

DublinPorto

DUB - OPO

DUBOPO

Dublin

Thu 19/3

06:50-20:45

2 stops13h 55m

Porto

Mon 23/3

07:30-23:05

2 stops15h 35m

£140

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Sat 18/4

10:45-13:40

Nonstop2h 55m

Lisbon Humberto Delgado

Fri 15/5

21:15-00:05

Nonstop2h 50m

£142

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Wed 15/4

10:45-13:40

Nonstop2h 55m

Lisbon Humberto Delgado

Sat 18/4

21:15-00:05

Nonstop2h 50m

£142

DublinFaro

DUB - FAO

DUBFAO

Dublin

Thu 20/8

05:55-14:00

1 stop8h 05m

Faro

Thu 27/8

08:30-16:40

1 stop8h 10m

£147

DublinPorto

DUB - OPO

DUBOPO

Dublin

Wed 15/4

18:35-13:45

2 stops19h 10m

Porto

Tue 21/4

08:40-12:10

1 stop27h 30m

£155

DublinPorto

DUB - OPO

DUBOPO

Dublin

Wed 15/4

18:35-13:45

2 stops19h 10m

Porto

Wed 22/4

08:40-07:55

1 stop23h 15m

£155

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Wed 15/4

10:45-13:40

Nonstop2h 55m

Lisbon Humberto Delgado

Wed 29/4

21:05-23:55

Nonstop2h 50m

£166

DublinPorto

DUB - OPO

DUBOPO

Dublin

Fri 10/4

13:25-19:15

1 stop5h 50m

Porto

Mon 13/4

19:00-08:20

1 stop13h 20m

£169

DublinPorto

DUB - OPO

DUBOPO

Dublin

Tue 14/4

18:35-13:45

2 stops19h 10m

Porto

Tue 21/4

08:40-17:50

1 stop9h 10m

£170

Flights are sorted by cheapest return flights first.

Deals found on 28/2

Showing 1-10 of 50 resultsSorted by cheapest first
1
2
3
...
5

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
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 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 £37). Flying from Ireland to Portugal in July is currently the most expensive (average of £85). 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?

Find hourly flight availability from Ireland to Portugal. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 4 March 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 42% on flights from Ireland to Portugal by exploring options for tickets at midday.

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

Use this chart to determine the cheapest time to fly return from Ireland to Portugal. Price data was last updated on 21 February 2026.

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.

How often are flights from Ireland to Portugal delayed?

About 20% of weekly flights between Ireland and Portugal have experienced delays in the past year, with the average delay time being 108 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.

Reviews of airlines servicing Portugal

Get insights into the airlines that provide service to Portugal. 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 Portugal. Reviews last updated 4 March 2026.
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
7.2
Good
1,467 reviews
Check prices

Crew

8.1

Food

6.6

Comfort

7.1

Overall

7.2

Entertainment

7.0

Boarding

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Aer Lingus
7.2
Good
1,467 reviews
Aer Lingus
7.2
Good
1,467 reviews
Check prices

Crew

8.1

Food

6.6

Comfort

7.1

Overall

7.2

Entertainment

7.0

Boarding

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
TAP AIR PORTUGAL
7.1
Good
2,155 reviews
Aer Lingus
7.2
Good
1,467 reviews
Check prices

Crew

8.1

Food

6.6

Comfort

7.1

Overall

7.2

Entertainment

7.0

Boarding

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.
Ryanair
6.9
Okay
5,286 reviews
Aer Lingus
7.2
Good
1,467 reviews
Check prices

Crew

8.1

Food

6.6

Comfort

7.1

Overall

7.2

Entertainment

7.0

Boarding

7.4

Reviews

1 / 20
8.0
Excellent

Anonymous,Nov 2025

DUB - EDI

Fine except for app. Couldn’t check in online - kept saying I couldn’t check in until the morning after my flight. On second leg I could check in but couldn’t get my boarding pass into my wallet. Thankfully I took a screenshot of it because I couldn’t retrieve it when we boarded - the app prohibited it.

Related info for your journey

Find useful and relevant information for your journey from Ireland to Portugal. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Ireland to Portugal flight route?

    This flight path from Ireland to Portugal was viewed by 406 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 £77, Ryanair can have you in Portugal from Ireland in 2h 50m. Airlines will cover a distance of 1021 mi. Both multi-stop and direct flights can be found to your destination and back.

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

    £23 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 £38 and £40, 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 £37). Flying from Ireland to Portugal in July is currently the most expensive (average of £85). 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 Ireland to Portugal

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Istanbul flights
Charles de Gaulle to Gatwick flights
Charles de Gaulle to Luton flights
Charles de Gaulle to Edinburgh flights
Heathrow to Málaga flights
Heathrow to Leonardo da Vinci/Fiumicino flights
Charles de Gaulle to London City flights
Duesseldorf Intl to Heathrow flights
Orly to Gatwick flights
Heathrow to Lisbon flights
Stansted to Istanbul flights
Charles de Gaulle to Heathrow flights
Duesseldorf Intl to Stansted flights
Heathrow to Athens flights
Orly to Heathrow flights
Madrid to Heathrow flights
Gatwick to Leonardo da Vinci/Fiumicino flights
Gatwick to Barcelona-El Prat flights
Charles de Gaulle to Southend flights
Gatwick to Lisbon flights
Heathrow to Barcelona-El Prat flights
Gatwick to Istanbul flights
Madrid to Gatwick flights
Frankfurt to Luton flights
Duesseldorf Intl to Luton flights
Duesseldorf Intl to London City flights
Vienna to Gatwick flights
Heathrow to Faro flights
Bruxelles-National to Gatwick flights
Frankfurt to Heathrow flights
Vienna to Heathrow flights
Bruxelles-National to Luton flights
Bruxelles-National to Stansted flights
London City to Leonardo da Vinci/Fiumicino flights
Bruxelles-National to Heathrow flights
London City to Málaga flights
Frederic Chopin to Heathrow flights
Gatwick to Madrid flights
Gatwick to Charles de Gaulle flights
Luton to Charles de Gaulle flights
Madrid to London City flights
Amsterdam to Luton flights
Madrid to Luton flights
Heathrow to Vicenza flights
Luton to Barcelona-El Prat flights
Madrid to Stansted flights
London City to Istanbul flights
Luton to Leonardo da Vinci/Fiumicino flights
Cologne to Gatwick flights
Beauvais-Tille to Stansted flights

Top 3 airlines flying from Ireland to Portugal

Discover the top 3 airlines that operate flights from Ireland to Portugal. 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 4 March 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£26Average£135FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£71Average£188FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£78Average£212FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL 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 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.

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.