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Cheap flights from Ireland to Portugal from £20

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 15/12. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LIS
7 Dec — 14 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap 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 November 2025.

Round-trip from

£47

One-way from

£20

Popular in

July

Cheapest in

January

Average price

£99

Good round-trip deal

£50 or less

Good one-way deal

£33 or less
Ryanair
  • Ryanair
  • 13/12-14/12
  • Nonstop
  • 5h 40m total
  • Ireland to Portugal
Search Deals
Ryanair
  • Ryanair
  • 4/12
  • Nonstop
  • 2h 50m total
  • Ireland to Portugal
Search Deals
Highest demand for flights based on searches. 29% potential increase in price (£48 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in November 2025
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

Find 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 November 2025.

Sat 13/1212:00DUB - FAO
Nonstop2h 50mRyanair
Sun 14/1217:35FAO - DUB
Nonstop2h 50mRyanair
Deal found 6/11£47
Sat 6/1208:55DUB - OPO
Nonstop2h 20mRyanair
Sat 13/1214:30OPO - DUB
Nonstop2h 20mRyanair
Deal found 4/11£50
Wed 3/1209:50DUB - OPO
Nonstop2h 20mRyanair
Fri 12/1209:45OPO - DUB
Nonstop2h 20mRyanair
Deal found 7/11£54
Wed 19/1110:15DUB - FAO
Nonstop2h 50mRyanair
Sat 22/1120:05FAO - DUB
Nonstop2h 50mRyanair
Deal found 5/11£57
Tue 25/1107:00DUB - FAO
Nonstop2h 50mRyanair
Thu 27/1110:25FAO - DUB
Nonstop2h 50mRyanair
Deal found 5/11£60
Sun 7/1206:05DUB - LIS
Nonstop2h 50mMultiple Airlines
Wed 10/1217:40LIS - DUB
1 stop6h 10mMultiple Airlines
Deal found 6/11£67
Fri 12/1217:35DUB - LIS
Nonstop2h 50mRyanair
Sun 14/1209:55LIS - DUB
Nonstop2h 50mRyanair
Deal found 7/11£71
Tue 2/1207:30DUB - FAO
Nonstop3h 00mAer Lingus
Tue 9/1211:10FAO - DUB
Nonstop3h 00mAer Lingus
Deal found 6/11£74
Sun 23/1106:05DUB - LIS
Nonstop2h 50mRyanair
Tue 25/1120:55LIS - DUB
Nonstop2h 50mRyanair
Deal found 6/11£79
Tue 2/1207:00DUB - FAO
Nonstop2h 50mRyanair
Tue 9/1213:40FAO - DUB
1 stop7h 10mRyanair
Deal found 6/11£81
Thu 27/1107:15DUB - LIS
Nonstop2h 55mAer Lingus
Tue 23/1210:50LIS - DUB
Nonstop2h 55mAer Lingus
Deal found 5/11£91
Tue 2/1219:35DUB - FAO
1 stop13h 45mMultiple Airlines
Tue 9/1209:50FAO - DUB
1 stop13h 15mMultiple Airlines
Deal found 6/11£94

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 November 2025.
Use the filters below to find and compare flights from Ireland to Portugal that are best for you.

Fly from

Ireland

Fly to

Portugal

Route

Depart

Return

Price

DublinFaro

DUB - FAO

DUBFAO

Dublin

Sat 13/12

12:00-14:50

Nonstop2h 50m

Faro

Sun 14/12

17:35-20:25

Nonstop2h 50m

£47

DublinPorto

DUB - OPO

DUBOPO

Dublin

Sat 6/12

08:55-11:15

Nonstop2h 20m

Porto

Sat 13/12

14:30-16:50

Nonstop2h 20m

£50

DublinPorto

DUB - OPO

DUBOPO

Dublin

Wed 3/12

09:50-12:10

Nonstop2h 20m

Porto

Fri 12/12

09:45-12:05

Nonstop2h 20m

£54

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Sun 7/12

06:05-08:55

Nonstop2h 50m

Lisbon Humberto Delgado

Wed 10/12

17:40-23:50

1 stop6h 10m

£67

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Fri 12/12

17:35-20:25

Nonstop2h 50m

Lisbon Humberto Delgado

Sun 14/12

09:55-12:45

Nonstop2h 50m

£71

DublinFaro

DUB - FAO

DUBFAO

Dublin

Mon 15/12

20:05-22:55

Nonstop2h 50m

Faro

Fri 19/12

10:40-13:30

Nonstop2h 50m

£74

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Sun 23/11

06:05-08:55

Nonstop2h 50m

Lisbon Humberto Delgado

Tue 25/11

20:55-23:45

Nonstop2h 50m

£79

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Sun 1/3

04:25-07:20

Nonstop2h 55m

Lisbon Humberto Delgado

Wed 11/3

06:40-09:30

Nonstop2h 50m

£86

DublinFaro

DUB - FAO

DUBFAO

Dublin

Thu 12/2

07:10-10:00

Nonstop2h 50m

Faro

Thu 19/2

10:25-13:15

Nonstop2h 50m

£89

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Thu 27/11

07:15-10:10

Nonstop2h 55m

Lisbon Humberto Delgado

Tue 23/12

10:50-13:45

Nonstop2h 55m

£91

Flights are sorted by cheapest return flights first.

Deals found on 6/11

Showing 1-10 of 54 results
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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
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 £22). Flying from Ireland to Portugal in July is currently the most expensive (average of £87). 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 November 2025.

Unlike in the morning, when flights are generally more expensive, you can save up to 23% on flights from Ireland to Portugal by exploring options for tickets in the evening.

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 2 November 2025.

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 November 2025.
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
1,365 reviews
Check prices

Comfort

7.1

Crew

8.0

Entertainment

6.9

Boarding

7.4

Overall

7.2

Food

6.6

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
Aer Lingus
7.2
Good
1,365 reviews
Aer Lingus
7.2
Good
1,365 reviews
Check prices

Comfort

7.1

Crew

8.0

Entertainment

6.9

Boarding

7.4

Overall

7.2

Food

6.6

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
TAP AIR PORTUGAL
7.1
Good
2,048 reviews
Aer Lingus
7.2
Good
1,365 reviews
Check prices

Comfort

7.1

Crew

8.0

Entertainment

6.9

Boarding

7.4

Overall

7.2

Food

6.6

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.
Ryanair
6.8
Okay
5,189 reviews
Aer Lingus
7.2
Good
1,365 reviews
Check prices

Comfort

7.1

Crew

8.0

Entertainment

6.9

Boarding

7.4

Overall

7.2

Food

6.6

Reviews

1 / 20
6.0
Good

David,Oct 2025

DUB - IAD

Two issues... 1. The Aer Lingus check-in counter in Lisbon did not open until 90 minutes prior to the flight. Huge line of customers waiting to check-in and very time consuming. Plus, having to clear security, passport control, and take the shuttle bus to the plane takes a long time. Consequently, the flight was delayed due to passengers not being able to get to the gate on time. I showed up four hours early but had to wait for over two hours just for the check-in counter to open. Many passengers complaining about the same issue. VERY STRESSFUL! 2. During the flight from Dublin to Washington (Flight EI 119 on October 25, 2025) one of the flight attendants (Glen) was quite rude to a parent of a non-verbal autistic child. At one point I heard him say in a nasty tone, "You have three seconds to put your bag under the seat or I will take it and check it. 3, 2, 1!" I did not speak to the flight attendant because I was afraid he would kick me off the flight. Very unpleasant to everyone before take off also while instructing them to put the seats up and bags under. Beyond being firm and actually nasty and rude. A little interpersonal communication training could help this man.

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 459 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 £47, Ryanair can have you in Portugal from Ireland in 2h 50m. Airlines will cover a distance of 1136 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?

    £20 is the cheapest one-way deal found within the past few days, from Ryanair. You may also be able to find cheap deals on Vueling and TAP AIR PORTUGAL, with prices starting from £53 and £54, 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 £22). Flying from Ireland to Portugal in July is currently the most expensive (average of £87). 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 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 November 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£45Average£138FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£69Average£192FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£88Average£194FlexibilityNo 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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