Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Ireland to Lisbon 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 15/1. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LIS
17 Dec — 24 Dec1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to Lisbon

Keep the following information in mind while searching for Ireland to Lisbon flight deals. Data was last updated 17 November 2025.

Round-trip from

£64

One-way from

£25

Popular in

June

Cheapest in

January

Average price

£96

Good round-trip deal

£127 or less

Good one-way deal

£113 or less
Ryanair
  • Ryanair
  • 15/12-17/12
  • Nonstop
  • 5h 40m total
  • Ireland to Lisbon
Search Deals
Ryanair
  • Ryanair
  • 15/1
  • Nonstop
  • 2h 50m total
  • Ireland to Lisbon
Search Deals
Highest demand for flights based on searches. 20% potential increase in price (£26 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease (£5 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 Lisbon Humberto Delgado.
Search Deals
Price to beat on a one-way flight from Ireland to Lisbon Humberto Delgado.
Search Deals

Find flight deals from Ireland to Lisbon

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to Lisbon
Explore the most affordable flight options available from Ireland to Lisbon. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 17 November 2025.

Mon 15/1218:10DUB - LIS
Nonstop2h 50mRyanair
Wed 17/1220:35LIS - DUB
Nonstop2h 50mRyanair
Deal found 15/11£64
Thu 4/1207:10DUB - LIS
Nonstop2h 50mRyanair
Thu 11/1215:10LIS - DUB
1 stop6h 25mRyanair
Deal found 17/11£69
Mon 15/1207:15DUB - LIS
Nonstop2h 55mMultiple Airlines
Mon 22/1221:30LIS - DUB
Nonstop2h 50mMultiple Airlines
Deal found 17/11£74
Thu 27/1107:15DUB - LIS
Nonstop2h 55mAer Lingus
Mon 22/1210:50LIS - DUB
Nonstop2h 55mAer Lingus
Deal found 17/11£91
Thu 4/1207:10DUB - LIS
Nonstop2h 50mRyanair
Sun 7/1221:40LIS - DUB
1 stop21h 30mRyanair
Deal found 16/11£92
Mon 15/1215:55DUB - LIS
1 stop22h 55mRyanair
Mon 22/1221:30LIS - DUB
Nonstop2h 50mRyanair
Deal found 17/11£93
Tue 25/1116:50DUB - LIS
Nonstop2h 50mMultiple Airlines
Sat 29/1109:35LIS - DUB
1 stop8h 30mMultiple Airlines
Deal found 16/11£113

Cheapflights Fare Finder

 
Customise your flight search to find flights from Ireland to Lisbon 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 17 November 2025.
Use the filters below to find and compare flights from Ireland to Lisbon that are best for you.

Fly from

Ireland

Fly to

Lisbon

Route

Depart

Return

Price

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Mon 15/12

18:10-21:00

Nonstop2h 50m

Lisbon Humberto Delgado

Wed 17/12

20:35-23:25

Nonstop2h 50m

£64

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Thu 4/12

07:10-10:00

Nonstop2h 50m

Lisbon Humberto Delgado

Sun 7/12

20:40-23:30

Nonstop2h 50m

£69

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Mon 19/1

12:10-15:00

Nonstop2h 50m

Lisbon Humberto Delgado

Mon 19/1

21:05-12:40

1 stop15h 35m

£74

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Thu 27/11

07:15-10:10

Nonstop2h 55m

Lisbon Humberto Delgado

Mon 22/12

10:50-13:45

Nonstop2h 55m

£91

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Mon 15/12

15:55-14:50

1 stop22h 55m

Lisbon Humberto Delgado

Mon 22/12

21:30-00:20

Nonstop2h 50m

£93

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Thu 19/2

17:15-20:05

Nonstop2h 50m

Lisbon Humberto Delgado

Sun 22/2

20:40-23:30

Nonstop2h 50m

£135

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Fri 30/1

07:15-10:10

Nonstop2h 55m

Lisbon Humberto Delgado

Sat 7/2

10:50-13:45

Nonstop2h 55m

£138

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Tue 30/12

10:25-13:15

Nonstop2h 50m

Lisbon Humberto Delgado

Tue 6/1

20:55-23:45

Nonstop2h 50m

£138

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Sun 28/12

06:05-08:55

Nonstop2h 50m

Lisbon Humberto Delgado

Tue 30/12

14:15-17:05

Nonstop2h 50m

£147

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Thu 15/1

17:15-20:05

Nonstop2h 50m

£25

Flights are sorted by cheapest return flights first.

Deals found on 16/11

Showing 1-10 of 16 results
1
2

Best time to book a flight from Ireland to Lisbon

Have a flexible travel schedule? Discover the best time to fly to Lisbon 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 Lisbon

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

Currently, January is the cheapest month in which you can book a flight from Ireland to Lisbon (average of £22). Flying from Ireland to Lisbon in July is currently the most expensive (average of £95). 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 LIS?

Find hourly flight availability from Ireland to Lisbon. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 17 November 2025.

One of the essential ways to save on airfare from Ireland to Lisbon is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight at midday could potentially save you up to 67% on airfare.

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

Use this chart to determine the cheapest time to fly return from Ireland to Lisbon. Price data was last updated on 2 November 2025.

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

Weekly flight availability from Ireland to Lisbon

Explore weekly flight availability from Ireland to Lisbon. 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 17 November 2025.

The most flights from IE0 to LIS are scheduled on a Monday (10 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 on average).

Reviews of airlines servicing Lisbon

Get insights into the airlines that provide service to Lisbon. 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 Lisbon. Reviews last updated 17 November 2025.
Check out reviews from past customers who have flown with Aer Lingus, TAP AIR PORTUGAL, andRyanair from Ireland to Lisbon to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,371 reviews
Check prices

Crew

8.0

Entertainment

6.9

Boarding

7.4

Overall

7.2

Food

6.6

Comfort

7.1

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
1,371 reviews
Aer Lingus
7.2
Good
1,371 reviews
Check prices

Crew

8.0

Entertainment

6.9

Boarding

7.4

Overall

7.2

Food

6.6

Comfort

7.1

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
2,062 reviews
Aer Lingus
7.2
Good
1,371 reviews
Check prices

Crew

8.0

Entertainment

6.9

Boarding

7.4

Overall

7.2

Food

6.6

Comfort

7.1

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
5,192 reviews
Aer Lingus
7.2
Good
1,371 reviews
Check prices

Crew

8.0

Entertainment

6.9

Boarding

7.4

Overall

7.2

Food

6.6

Comfort

7.1

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 Lisbon. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly into for flights to Lisbon from Ireland?

    For a flight from Ireland to Lisbon, you will be flying into Humberto Delgado. Lisbon Humberto Delgado (LIS) is just 4.2 mi from the center of the city.

  • How popular is this Ireland to Lisbon flight route?

    Within the past month, 459 users have taken a look at flights from Ireland to Lisbon Humberto Delgado.

  • How long is the flight from Ireland to Lisbon?

    Ryanair and Aer Lingus can get you from Ireland to Lisbon in just under 2h 50m. Your travel time will be generally consistent. The distance from Ireland to Lisbon is about 1021 mi. All flights are typically direct.

  • What are the most reliable airlines from Ireland to Lisbon?

    No one likes to see their flight delayed. When booking a flight from Ireland to Lisbon consider choosing American Airlines (86%), Aer Lingus (80%) or Ryanair (62%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Ireland to Lisbon?

    The cheapest flight price from Ireland to Lisbon is £22. On average you can expect to pay £195. The most popular route, (Dublin - Lisbon Humberto Delgado), can usually be booked for £324.

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

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

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

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

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

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

    Currently, January is the cheapest month in which you can book a flight from Ireland to Lisbon (average of £22). Flying from Ireland to Lisbon in July is currently the most expensive (average of £95). 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

Travelling to a place near Lisbon?

Book flights to Lisbon if you plan to visit one of these locations
Madeira
Setúbal
Oeiras
Fátima
Estoril
Almada
Beja
Sintra
Costa da Caparica
Óbidos
Nazaré
Sesimbra
Peniche

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 Lisbon

See prices for flight routes from nearby airports that may be better suited for you.
Heathrow to Lisbon flights
Gatwick to Lisbon flights
Luton to Lisbon flights
Stansted to Lisbon flights
Gatwick to Porto flights
London City to Lisbon flights
Heathrow to Faro flights
Gatwick to Funchal flights
Manchester to Lisbon flights
Gatwick to Faro flights
Heathrow to Porto flights
Heathrow to Funchal flights
Stansted to Porto flights
Luton to Faro flights
London City to Faro flights
Manchester to Faro flights
London City to Porto flights
Southend to Lisbon flights
Stansted to Faro flights
London City to Funchal flights
Luton to Porto flights
Stansted to Funchal flights
Manchester to Funchal flights
Luton to Funchal flights
Birmingham to Faro flights
Manchester to Porto flights
Bristol to Faro flights
Bristol to Lisbon flights
Lisbon to Ponta Delgada flights
Belfast Intl to Faro flights
Luxembourg to Porto flights
Southend to Porto flights
Liverpool to Faro flights
Birmingham to Lisbon flights
Glasgow Intl to Faro flights
Edinburgh to Lisbon flights
Bristol to Porto flights
Birmingham to Porto flights
Heathrow to Ponta Delgada flights
Southend to Faro flights
Leeds to Faro flights
Birmingham to Funchal flights
Edinburgh to Faro flights
Gatwick to Ponta Delgada flights
Belfast City to Faro flights
East Midlands to Faro flights
Edinburgh to Porto flights
Bristol to Funchal flights
Newcastle upon Tyne to Faro flights
Luton to Ponta Delgada flights

Top 3 airlines flying from Ireland to Lisbon

Discover the top 3 airlines that operate flights from Ireland to Lisbon. 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 17 November 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£58Average£136FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£69Average£163FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£88Average£185FlexibilityNo 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 Lisbon?

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 Lisbon from Ireland today with Cheapflights!

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

Cheapflights helps you find that perfect flight to Lisbon from Ireland by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

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

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

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

Of course! You can now track prices for flights from Ireland to Lisbon and get an alert from Cheapflights when they change. Have a valid email address ready and click the bell icon next to the flight deals above to set up your price 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.