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Cheap flights from Ireland to Lisbon from £40

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 13/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LIS
4 May — 11 May1
1 adult

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 29 April 2025.

Round-trip from

£72

One-way from

£40

Popular in

December

Cheapest in

January

Average price

£141

Good round-trip deal

£128 or less

Good one-way deal

£51 or less
Ryanair
  • Ryanair
  • 4/6-20/6
  • Nonstop
  • 5h 35m total
  • Ireland to Lisbon
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Ryanair
  • Ryanair
  • 13/9
  • Nonstop
  • 2h 50m total
  • Ireland to Lisbon
Search Deals
High demand for flights, 14% potential price rise
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Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Ireland to Lisbon Humberto Delgado.
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Price to beat on a one-way flight from Ireland to Lisbon Humberto Delgado.
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Find flight deals from Ireland to Lisbon

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 29 April 2025.

Wed 4/619:40DUB - LIS
Nonstop2h 50mRyanair
Fri 20/621:45LIS - DUB
Nonstop2h 45mRyanair
Deal found 28/4£72
Mon 27/1017:00DUB - LIS
Nonstop2h 50mTAP AIR PORTUGAL
Thu 6/1120:25LIS - DUB
Nonstop2h 55mTAP AIR PORTUGAL
Deal found 28/4£98
Wed 4/619:40DUB - LIS
Nonstop2h 50mMultiple Airlines
Sat 14/620:05LIS - DUB
1 stop5h 00mMultiple Airlines
Deal found 28/4£110
Wed 14/512:10DUB - LIS
1 stop11h 20mLufthansa
Thu 15/506:15LIS - DUB
1 stop10h 40mLufthansa
Deal found 29/4£132
Fri 29/805:55DUB - LIS
1 stop8h 40mKLM
Wed 3/905:00LIS - DUB
1 stop5h 25mKLM
Deal found 29/4£139
Tue 13/518:40DUB - LIS
1 stop28h 40mSWISS
Sat 17/505:55LIS - DUB
1 stop6h 15mSWISS
Deal found 29/4£163
Tue 10/606:20DUB - LIS
1 stop25h 25mIberia
Tue 17/620:45LIS - DUB
1 stop11h 45mIberia
Deal found 28/4£180
Sun 4/510:10DUB - LIS
1 stop10h 25mVueling
Fri 9/522:10LIS - DUB
1 stop9h 25mVueling
Deal found 29/4£237
Sun 29/615:55DUB - LIS
1 stop6h 30mAir France
Sat 5/715:55LIS - DUB
1 stop6h 45mAir France
Deal found 29/4£293

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 29 April 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

Wed 4/6

19:40-22:30

Nonstop2h 50m

Lisbon Humberto Delgado

Fri 20/6

21:45-00:30

Nonstop2h 45m

£72

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Sun 5/10

18:50-21:45

Nonstop2h 55m

Lisbon Humberto Delgado

Sun 19/10

07:10-10:00

Nonstop2h 50m

£101

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Wed 4/6

19:40-22:30

Nonstop2h 50m

Lisbon Humberto Delgado

Sat 14/6

20:05-01:05

1 stop5h 00m

£110

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Wed 14/5

12:10-23:30

1 stop11h 20m

Lisbon Humberto Delgado

Thu 15/5

06:15-16:55

1 stop10h 40m

£132

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Fri 29/8

05:55-14:35

1 stop8h 40m

Lisbon Humberto Delgado

Wed 3/9

05:00-10:25

1 stop5h 25m

£139

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Tue 13/5

18:40-23:20

1 stop28h 40m

Lisbon Humberto Delgado

Sat 17/5

05:55-12:10

1 stop6h 15m

£163

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Tue 10/6

06:20-07:45

1 stop25h 25m

Lisbon Humberto Delgado

Tue 17/6

20:45-08:30

1 stop11h 45m

£180

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Sun 29/6

15:55-22:25

1 stop6h 30m

Lisbon Humberto Delgado

Sat 5/7

15:55-22:40

1 stop6h 45m

£293

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Sat 13/9

14:10-17:00

Nonstop2h 50m

£40

DublinLisbon

DUB - LIS

DUBLIS

Dublin

Sun 3/8

05:30-08:25

Nonstop2h 55m

£41

Flights are sorted by cheapest return flights first.

Deals found on 28/4

Showing 1-10 of 20 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 £101). Flying from Ireland to Lisbon in August is currently the most expensive (average of £274). 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 29 April 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 evening tend to be the most expensive. A flight at midday could potentially save you up to 44% 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 30 March 2025.

Travellers seeking maximum savings on their Ireland to Lisbon flight should consider departing on Sunday at midday when fares are most often at their lowest. Tuesday 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 29 April 2025.

The most flights from IE0 to LIS are scheduled on a Sunday (11 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (5 on average).

Rainfall in Lisbon by month

Plan your trip to Lisbon by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Lisbon ranges from 6.0 - 122.0 inches per month. December is typically the wettest month, when rainfall can reach 122.0 mm. July is typically the driest time to visit Lisbon when rainfall is around 6.0 mm.

Temperature in Lisbon by month

Plan your trip to Lisbon by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Lisbon, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 23.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 11.0 C).

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 29 April 2025.
Get a feel of what it's like to fly with Aegean Airlines, KLM and Finnair from Ireland to Lisbon by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Aegean Airlines
8.1
Very Good
739 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Entertainment

6.9

Crew

8.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Aegean Airlines
8.1
Very Good
739 reviews
Aegean Airlines
8.1
Very Good
739 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Entertainment

6.9

Crew

8.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
KLM
7.8
Good
1,333 reviews
Aegean Airlines
8.1
Very Good
739 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Entertainment

6.9

Crew

8.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Finnair
7.6
Good
1,273 reviews
Aegean Airlines
8.1
Very Good
739 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Entertainment

6.9

Crew

8.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
SWISS
7.5
Good
1,588 reviews
Aegean Airlines
8.1
Very Good
739 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Entertainment

6.9

Crew

8.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you
Air France
7.4
Good
1,444 reviews
Aegean Airlines
8.1
Very Good
739 reviews
Check prices

Comfort

7.8

Food

7.3

Boarding

7.8

Entertainment

6.9

Crew

8.6

Overall

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Nov 2024

SKG - FRA

I am very proud of them. Everything was very nice everything thank you

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, 544 users have taken a look at flights from Ireland to Lisbon Humberto Delgado.

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

    One-way options have recently been found by users for as low as £40 on Ryanair. Other airlines that offer cheap prices include TAP AIR PORTUGAL from £41 and Vueling from £63 one-way.

  • 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 (83%), Aer Lingus (82%) or Ryanair (66%) 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 £31. On average you can expect to pay £168. The most popular route, (Dublin - Lisbon Humberto Delgado), can usually be booked for £135.

  • 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 £101). Flying from Ireland to Lisbon in August is currently the most expensive (average of £274). 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 Ireland?

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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Ireland to Lisbon

See prices for flight routes from nearby airports that may be better suited for you.
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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 29 April 2025.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£59Average£129FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£69Average£178FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£72Average£170FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

Fly with Cheapflights

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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.

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