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Cheap flights from Ireland to Portugal from £22

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 29/8. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LIS
6 Sep — 13 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
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 7 August 2026.

Mon 21/919:35 -
Nonstop2h 25m
Fri 25/921:45 -
Nonstop2h 25m
Deal found 3/8£65
Tue 15/914:30 -
1 stop6h 10m
Tue 22/922:25 -
Nonstop2h 25m
Deal found 3/8£69
Wed 21/1020:45 -
Nonstop2h 25m
Sun 25/1020:35 -
Nonstop2h 25m
Deal found 4/8£74
Thu 3/907:55 -
1 stop5h 45m
Thu 10/922:20 -
Nonstop2h 25m
Deal found 4/8£78
Tue 8/919:20 -
Nonstop2h 25m
Thu 10/922:20 -
Nonstop2h 25m
Deal found 6/8£79
Sun 20/918:55 -
Nonstop2h 25m
Fri 25/921:45 -
Nonstop2h 25m
Deal found 6/8£84
Fri 25/917:30 -
Nonstop2h 55m
Mon 28/907:50 -
Nonstop2h 55m
Deal found 3/8£92
Sun 4/1008:15 -
1 stop14h 50m
Sun 11/1008:05 -
Nonstop2h 55m
Deal found 5/8£93
Thu 3/910:35 -
1 stop11h 15m
Mon 14/922:50 -
2 stops19h 55m
Deal found 6/8£94
Thu 12/1117:05 -
Nonstop2h 55m
Sun 15/1110:20 -
Nonstop3h 00m
Deal found 3/8£96
Tue 18/820:35 -
Nonstop2h 55m
Fri 21/809:00 -
1 stop15h 15m
Deal found 5/8£97
Thu 1/1006:25 -
Nonstop2h 55m
Sun 4/1008:05 -
Nonstop2h 55m
Deal found 7/8£98

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 7 August 2026.

Round-trip from

£53

One-way from

£22

Popular in

July

Cheapest in

January

Average price

£126

Good round-trip deal

£124 or less

Good one-way deal

£84 or less
Ryanair
  • Ryanair
  • 21/9-25/9
  • Nonstop
  • 4h 50m total
  • Ireland to Portugal
Search Deals
Ryanair
  • Ryanair
  • 29/8
  • Nonstop
  • 2h 55m total
  • Ireland to Portugal
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. 6% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 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 7 August 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

Cheapest return flight
Fastest return journey

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Mon 21/9

19:35-22:00

Nonstop2h 25m

Porto

Fri 25/9

21:45-00:10

Nonstop2h 25m

£65

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Tue 15/9

19:20-21:45

Nonstop2h 25m

Porto

Tue 22/9

22:25-00:50

Nonstop2h 25m

£75

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Wed 21/10

20:45-23:10

Nonstop2h 25m

Porto

Sun 25/10

09:20-11:45

Nonstop2h 25m

£77

DublinFaro

DUB Dublin - FAO Faro

DUBFAO

Dublin

Sat 31/10

09:40-12:35

Nonstop2h 55m

Faro

Sat 7/11

06:15-09:15

Nonstop3h 00m

£100

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Wed 9/9

17:55-20:45

Nonstop2h 50m

Lisbon Humberto Delgado

Sat 19/9

21:15-23:59

Nonstop2h 44m

£107

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Fri 13/11

06:00-08:25

Nonstop2h 25m

Porto

Sun 15/11

09:20-11:45

Nonstop2h 25m

£108

DublinPorto

DUB Dublin - OPO Porto

DUBOPO

Dublin

Thu 3/9

19:30-21:55

Nonstop2h 25m

Porto

Thu 10/9

22:20-00:45

Nonstop2h 25m

£116

DublinFaro

DUB Dublin - FAO Faro

DUBFAO

Dublin

Thu 24/9

17:25-20:20

Nonstop2h 55m

Faro

Sun 27/9

08:05-11:00

Nonstop2h 55m

£122

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Thu 24/9

06:10-09:00

Nonstop2h 50m

Lisbon Humberto Delgado

Sun 27/9

05:55-08:40

Nonstop2h 45m

£123

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Wed 16/12

12:50-08:30

1 stop19h 40m

Lisbon Humberto Delgado

Mon 28/12

21:05-12:05

1 stop15h 00m

£130

Flights are sorted by cheapest return flights first.

Deals found on 7/8

Showing 1-10 of 53 resultsSorted by cheapest first
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6

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 £97). Flying from Ireland to Portugal in July is currently the most expensive (average of £211). 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 7 August 2026.

Unlike in the evening, when flights are generally more expensive, you can save up to 47% on flights from Ireland to Portugal by exploring options for tickets at midday.

Weekly flight availability from Ireland to Portugal

Explore weekly flight availability from Ireland to Portugal. 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 7 August 2026.

The most flights from IE0 to PT0 are scheduled on a Thursday (8 on average). You will have fewer flight options on Sunday, which is when the least amount of flights are scheduled (2 on average).

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 73 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?

Use this chart to determine the cheapest time to fly return from Ireland to Portugal. Price data was last updated on 1 August 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.

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 7 August 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
7.3
Good
1,691 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Food

6.7

Overall

7.3

Crew

8.1

Comfort

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

DUB - OVD

It is a budget airlines and it feels like it. Cheap, but between us and our neighbors, one charger didn't work, one seat wouldn't lock and would collapse on the people behind us, and two food trays didn't lock in place well. It wasn't that big a deal - we just handled the fixtures carefully, but you get what you pay for.
Aer Lingus
7.3
Good
1,691 reviews
Aer Lingus
7.3
Good
1,691 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Food

6.7

Overall

7.3

Crew

8.1

Comfort

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

DUB - OVD

It is a budget airlines and it feels like it. Cheap, but between us and our neighbors, one charger didn't work, one seat wouldn't lock and would collapse on the people behind us, and two food trays didn't lock in place well. It wasn't that big a deal - we just handled the fixtures carefully, but you get what you pay for.
TAP AIR PORTUGAL
7.2
Good
2,358 reviews
Aer Lingus
7.3
Good
1,691 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Food

6.7

Overall

7.3

Crew

8.1

Comfort

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

DUB - OVD

It is a budget airlines and it feels like it. Cheap, but between us and our neighbors, one charger didn't work, one seat wouldn't lock and would collapse on the people behind us, and two food trays didn't lock in place well. It wasn't that big a deal - we just handled the fixtures carefully, but you get what you pay for.
Ryanair
6.9
Okay
5,460 reviews
Aer Lingus
7.3
Good
1,691 reviews
Check prices

Boarding

7.4

Entertainment

7.0

Food

6.7

Overall

7.3

Crew

8.1

Comfort

7.2

Reviews

1 / 20
6.0
Good

Anonymous,Jul 2026

DUB - OVD

It is a budget airlines and it feels like it. Cheap, but between us and our neighbors, one charger didn't work, one seat wouldn't lock and would collapse on the people behind us, and two food trays didn't lock in place well. It wasn't that big a deal - we just handled the fixtures carefully, but you get what you pay for.

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 295 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 £53, Ryanair can have you in Portugal from Ireland in 2h 25m. Airlines will cover a distance of 848 mi. Generally, flights for this route are direct.

  • 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 £57, 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 £97). Flying from Ireland to Portugal in July is currently the most expensive (average of £211). 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.

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 7 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£51Average£195FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
RyanairCheapest£53Average£148FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
TAP AIR PORTUGALCheapest£99Average£160FlexibilityNo 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.

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