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Cheap flights from Ireland to Lisbon from £42

DUB — LIS
18 Sep — 25 Sep1
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

Mon 16/1118:45 -
1 stop14h 10m
Thu 19/1105:55 -
Nonstop2h 50m
Deal found 17/8£96
Tue 15/916:05 -
Nonstop2h 50m
Wed 16/917:20 -
2 stops14h 30m
Deal found 15/8£98
Thu 17/905:30 -
Nonstop2h 55m
Thu 24/921:15 -
Nonstop2h 50m
Deal found 18/8£98
Thu 26/1112:50 -
1 stop6h 15m
Mon 30/1122:00 -
Nonstop2h 50m
Deal found 15/8£99
Tue 29/906:05 -
1 stop11h 35m
Wed 30/920:45 -
2 stops24h 40m
Deal found 18/8£100
Sat 26/918:00 -
Nonstop2h 50m
Mon 28/906:40 -
Nonstop2h 45m
Deal found 14/8£101
Wed 30/917:55 -
Nonstop2h 50m
Sat 3/1021:35 -
1 stop14h 45m
Deal found 17/8£103
Fri 27/1116:55 -
Nonstop2h 55m
Sun 29/1107:30 -
Nonstop2h 55m
Deal found 18/8£103
Wed 30/917:55 -
Nonstop2h 50m
Sat 3/1015:50 -
2 stops18h 30m
Deal found 17/8£104
Sat 12/920:20 -
2 stops16h 35m
Tue 15/906:30 -
Nonstop2h 45m
Deal found 18/8£106
Wed 9/917:55 -
Nonstop2h 50m
Sat 19/921:15 -
Nonstop2h 44m
Deal found 15/8£106
Mon 9/1109:50 -
Nonstop2h 50m
Tue 17/1119:00 -
2 stops23h 20m
Deal found 15/8£107

Find flight deals from Ireland to Lisbon

Round-trip from

£96

One-way from

£42

Popular in

July

Cheapest in

January

Average price

£148

Good round-trip deal

£184 or less

Good one-way deal

£64 or less
Ryanair
  • Ryanair
  • 16/11-19/11
  • 1 total stop
  • 17h 00m total
  • Ireland to Lisbon
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Ryanair
  • Ryanair
  • 15/9
  • Nonstop
  • 2h 50m total
  • Ireland to Lisbon
Search Deals
Highest demand for flights based on searches. 15% potential increase in price (£19 potential increase over avg. return price).
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Cheapest flight prices on average. 2% potential price decrease (£4 potential savings vs. average return price).
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Average for round-trip flights in August 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

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Wed 10/2

16:55-19:50

Nonstop2h 55m

Lisbon Humberto Delgado

Sun 14/2

07:30-10:25

Nonstop2h 55m

£104
Fastest return journey

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

£115

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Fri 25/9

19:05-21:55

Nonstop2h 50m

Lisbon Humberto Delgado

Tue 29/9

06:30-09:15

Nonstop2h 45m

£117

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Wed 28/10

17:00-19:50

Nonstop2h 50m

Lisbon Humberto Delgado

Sat 31/10

06:10-09:00

Nonstop2h 50m

£133

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Mon 7/9

06:05-22:15

1 stop16h 10m

Lisbon Humberto Delgado

Tue 15/9

05:55-17:50

1 stop11h 55m

£155

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Sat 3/10

05:55-14:35

1 stop8h 40m

Lisbon Humberto Delgado

Mon 5/10

19:45-08:20

1 stop12h 35m

£157

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Wed 10/2

10:30-21:50

1 stop11h 20m

Lisbon Humberto Delgado

Sun 14/2

12:55-07:50

1 stop18h 55m

£176

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Wed 9/9

08:50-22:15

1 stop13h 25m

Lisbon Humberto Delgado

Sat 19/9

05:55-12:10

1 stop6h 15m

£182

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Tue 22/9

08:50-23:35

1 stop14h 45m

Lisbon Humberto Delgado

Tue 29/9

05:55-17:50

1 stop11h 55m

£193

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Fri 4/9

13:25-22:50

1 stop9h 25m

Lisbon Humberto Delgado

Mon 7/9

19:45-08:20

1 stop12h 35m

£205

Flights are sorted by cheapest return flights first.

Deals found on 16/8

Showing 1-10 of 20 resultsSorted by cheapest first
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

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 £91). Flying from Ireland to Lisbon in July is currently the most expensive (average of £188). 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 81% on airfare.

How often are flights from Ireland to Lisbon delayed?

About 22% of weekly flights between Ireland and Lisbon 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 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 Wednesday 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 12% of flights being delayed.

How far ahead should I book a flight from Ireland to Lisbon?

Booking 83 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
1,708 reviews
Check prices

Entertainment

7.0

Food

6.7

Comfort

7.2

Boarding

7.5

Overall

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2026

DUB - BCN

Would have been nice to have a plane that was equipped with a screen to watch a movie enroute to Barcelona, but all good. Flight and crew was excellent. Much appreciated the updates from captain and Kayak about the flight delay due the weather. It’s nice to be kept informed. Will Aer Lingus for future flights, and definitely through Kayak
Aer Lingus
7.3
Good
1,708 reviews
Aer Lingus
7.3
Good
1,708 reviews
Check prices

Entertainment

7.0

Food

6.7

Comfort

7.2

Boarding

7.5

Overall

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2026

DUB - BCN

Would have been nice to have a plane that was equipped with a screen to watch a movie enroute to Barcelona, but all good. Flight and crew was excellent. Much appreciated the updates from captain and Kayak about the flight delay due the weather. It’s nice to be kept informed. Will Aer Lingus for future flights, and definitely through Kayak
TAP AIR PORTUGAL
7.2
Good
2,371 reviews
Aer Lingus
7.3
Good
1,708 reviews
Check prices

Entertainment

7.0

Food

6.7

Comfort

7.2

Boarding

7.5

Overall

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2026

DUB - BCN

Would have been nice to have a plane that was equipped with a screen to watch a movie enroute to Barcelona, but all good. Flight and crew was excellent. Much appreciated the updates from captain and Kayak about the flight delay due the weather. It’s nice to be kept informed. Will Aer Lingus for future flights, and definitely through Kayak
Ryanair
6.9
Okay
5,469 reviews
Aer Lingus
7.3
Good
1,708 reviews
Check prices

Entertainment

7.0

Food

6.7

Comfort

7.2

Boarding

7.5

Overall

7.3

Crew

8.1

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2026

DUB - BCN

Would have been nice to have a plane that was equipped with a screen to watch a movie enroute to Barcelona, but all good. Flight and crew was excellent. Much appreciated the updates from captain and Kayak about the flight delay due the weather. It’s nice to be kept informed. Will Aer Lingus for future flights, and definitely through Kayak

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

  • How long is the flight from Ireland to Lisbon?

    Ryanair and TAP AIR PORTUGAL can get you from Ireland to Lisbon in just under 2h 55m. Your travel time can differ by up to 11h 15m. The distance from Ireland to Lisbon is about 1021 mi. This flight may include one or multiple stops.

  • 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 (81%) or Azores Airlines (69%) 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 £40. On average you can expect to pay £1,102. The most popular route, (Dublin - Lisbon Humberto Delgado), can usually be booked for £106.

  • 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 £91). Flying from Ireland to Lisbon in July is currently the most expensive (average of £188). 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£56Average£131FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
Aer LingusCheapest£62Average£152FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
TAP AIR PORTUGALCheapest£103Average£172FlexibilityNo cancel feeOn-timeN/A
Search TAP AIR PORTUGAL flights

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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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