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Cheap flights from Ireland to Lisbon from £42

DUB — LIS
5 Oct — 12 Oct1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Ireland to Lisbon

Enter your travel dates to find the best prices.

Cheapest flights from Ireland to Lisbon

Thu 12/1109:10 -
Nonstop2h 50m
Sun 15/1122:05 -
Nonstop2h 50m
Deal found 31/8£84
Wed 4/1106:50 -
Nonstop2h 50m
Fri 13/1120:50 -
Nonstop2h 50m
Deal found 2/9£85
Tue 29/906:10 -
Nonstop2h 50m
Wed 30/923:20 -
2 stops17h 15m
Deal found 3/9£87
Tue 6/1018:40 -
Nonstop2h 55m
Tue 13/1022:15 -
Nonstop2h 44m
Deal found 30/8£87
Fri 2/1019:05 -
Nonstop2h 50m
Fri 9/1022:30 -
Nonstop2h 45m
Deal found 4/9£88
Wed 28/1006:50 -
Nonstop2h 50m
Sat 31/1006:10 -
Nonstop2h 50m
Deal found 3/9£89
Tue 22/906:10 -
Nonstop2h 50m
Tue 29/920:20 -
Nonstop2h 45m
Deal found 31/8£90
Thu 1/1020:00 -
1 stop25h 15m
Tue 6/1006:30 -
Nonstop2h 45m
Deal found 2/9£92
Mon 5/1007:40 -
Nonstop3h 05m
Fri 9/1022:30 -
Nonstop2h 45m
Deal found 30/8£92
Thu 1/1015:00 -
Nonstop2h 50m
Mon 5/1022:00 -
1 stop10h 30m
Deal found 1/9£93
Mon 7/919:15 -
Nonstop2h 50m
Tue 15/906:30 -
Nonstop2h 45m
Deal found 30/8£95
Thu 1/1006:10 -
Nonstop2h 50m
Mon 5/1022:00 -
2 stops27h 00m
Deal found 31/8£96

Find flight deals from Ireland to Lisbon

Round-trip from

£84

One-way from

£42

Popular in

July

Cheapest in

January

Average price

£139

Good round-trip deal

£128 or less

Good one-way deal

£64 or less
Ryanair
  • Ryanair
  • 12/11-15/11
  • Nonstop
  • 5h 40m total
  • Ireland to Lisbon
Search Deals
Ryanair
  • Ryanair
  • 15/9-31/12
  • Nonstop
  • 2h 50m total
  • Ireland to Lisbon
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£18 potential increase over avg. return price).
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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 September 2026
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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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Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight
Fastest return journey

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Tue 3/11

16:50-19:40

Nonstop2h 50m

Lisbon Humberto Delgado

Wed 31/12

00:00-00:00

Nonstop0h 00m

£47

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Thu 26/11

12:50-20:25

1 stop7h 35m

Lisbon Humberto Delgado

Wed 31/12

00:00-00:00

Nonstop0h 00m

£55

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Fri 2/10

19:05-21:55

Nonstop2h 50m

Lisbon Humberto Delgado

Wed 31/12

00:00-00:00

Nonstop0h 00m

£57

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Sat 27/2

13:25-23:10

1 stop9h 45m

Lisbon Humberto Delgado

Wed 31/12

00:00-00:00

Nonstop0h 00m

£68

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Sun 28/2

05:45-14:40

1 stop8h 55m

Lisbon Humberto Delgado

Wed 31/12

00:00-00:00

Nonstop0h 00m

£68

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Mon 1/3

17:15-23:10

1 stop5h 55m

Lisbon Humberto Delgado

Wed 31/12

00:00-00:00

Nonstop0h 00m

£68

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Fri 8/1

08:50-18:50

1 stop10h 00m

Lisbon Humberto Delgado

Wed 31/12

00:00-00:00

Nonstop0h 00m

£81

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Fri 18/12

08:10-11:00

Nonstop2h 50m

Lisbon Humberto Delgado

Wed 31/12

00:00-00:00

Nonstop0h 00m

£84

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Wed 28/10

06:50-09:40

Nonstop2h 50m

Lisbon Humberto Delgado

Sat 31/10

06:10-09:00

Nonstop2h 50m

£98

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Mon 14/9

19:15-22:05

Nonstop2h 50m

Lisbon Humberto Delgado

Wed 16/9

21:10-23:55

Nonstop2h 45m

£115

Flights are sorted by cheapest return flights first.

Deals found on 31/8

Showing 1-10 of 17 resultsSorted by cheapest first
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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

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 £90). Flying from Ireland to Lisbon in July is currently the most expensive (average of £189). 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?

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 83% on airfare.

Weekly flight availability from Ireland to Lisbon

The most flights from IE0 to LIS are scheduled on a Thursday (6 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (1 on average).

How often are flights from Ireland to Lisbon delayed?

About 21% of weekly flights between Ireland and Lisbon have experienced delays in the past year, with the average delay time being 110 minutes.

What is the most punctual flight time for Ireland to Lisbon 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?

Thursday tends to have the lowest number of delays on this route, whereas Monday 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 Lisbon 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 Lisbon?

Booking 45 days in advance of your planned departure date is, on average, the best time to get cheap flights from Ireland to Lisbon. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

Reviews of airlines servicing Lisbon

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
7.3
Good
1,745 reviews
Check prices

Comfort

7.2

Food

6.7

Entertainment

7.0

Crew

8.1

Boarding

7.5

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Patrick,Sept 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
Aer Lingus
7.3
Good
1,745 reviews
Aer Lingus
7.3
Good
1,745 reviews
Check prices

Comfort

7.2

Food

6.7

Entertainment

7.0

Crew

8.1

Boarding

7.5

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Patrick,Sept 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
TAP AIR PORTUGAL
7.2
Good
2,380 reviews
Aer Lingus
7.3
Good
1,745 reviews
Check prices

Comfort

7.2

Food

6.7

Entertainment

7.0

Crew

8.1

Boarding

7.5

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Patrick,Sept 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.
Ryanair
6.9
Okay
5,489 reviews
Aer Lingus
7.3
Good
1,745 reviews
Check prices

Comfort

7.2

Food

6.7

Entertainment

7.0

Crew

8.1

Boarding

7.5

Overall

7.3

Reviews

1 / 20
10.0
Excellent

Patrick,Sept 2026

DUB - IAD

I had a great experience. Crew was great and very accommodating.

Related info for your journey

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

  • How long is the flight from Ireland to Lisbon?

    Ryanair 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 cheapest airlines to fly from Ireland to Lisbon one-way?

    One-way options have recently been found by users for as low as £21 on Ryanair. Other airlines that offer cheap prices include Aer Lingus from £35 and TAP AIR PORTUGAL from £64 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 (86%), Aer Lingus (82%) or Azores Airlines (65%) 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 £56. On average you can expect to pay £1,111. The most popular route, (Dublin - Lisbon Humberto Delgado), can usually be booked for £69.

  • 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 £90). Flying from Ireland to Lisbon in July is currently the most expensive (average of £189). 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
Fátima
Nazaré
Evora
Madeira
Setúbal
Oeiras
Almada
Óbidos
Tomar
Estoril
Figueira da Foz
Sintra
Costa da Caparica

Browse thousands of different options on Cheapflights for your next trip

Top 3 airlines flying from Ireland to Lisbon

AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£55Average£132FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£62Average£152FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£103Average£168FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

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How does Cheapflights help users find flights from Ireland to Lisbon?

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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.

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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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