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Cheap flights from Ireland to Lisbon from £41

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 9/9. Fares are subject to change and may not be available on all flights or dates of travel.
DUB — LIS
12 Sep — 19 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
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 13 August 2026.

Tue 15/906:10 -
Nonstop2h 50m
Wed 16/917:20 -
2 stops14h 30m
Deal found 10/8£98
Sun 27/906:30 -
1 stop13h 40m
Tue 29/921:40 -
2 stops23h 45m
Deal found 12/8£101
Fri 13/1117:35 -
Nonstop2h 50m
Sun 15/1122:05 -
Nonstop2h 50m
Deal found 11/8£101
Wed 9/917:55 -
Nonstop2h 50m
Sat 19/909:50 -
Nonstop2h 45m
Deal found 12/8£102
Tue 1/916:05 -
Nonstop2h 50m
Fri 4/922:30 -
Nonstop2h 45m
Deal found 11/8£104
Mon 5/1021:55 -
1 stop11h 25m
Thu 8/1009:25 -
Nonstop2h 45m
Deal found 8/8£106
Wed 2/917:55 -
Nonstop2h 50m
Fri 4/922:30 -
Nonstop2h 45m
Deal found 11/8£107
Mon 12/1021:00 -
2 stops23h 25m
Mon 19/1022:45 -
2 stops24h 35m
Deal found 8/8£108
Sun 6/906:45 -
1 stop16h 45m
Sun 13/905:55 -
Nonstop2h 45m
Deal found 9/8£110

Find flight deals from Ireland to Lisbon

Keep the following information in mind while searching for Ireland to Lisbon flight deals. Data was last updated 13 August 2026.

Round-trip from

£98

One-way from

£41

Popular in

July

Cheapest in

January

Average price

£149

Good round-trip deal

£176 or less

Good one-way deal

£67 or less
Ryanair
  • Ryanair
  • 15/9-16/9
  • 2 total stops
  • 17h 20m total
  • Ireland to Lisbon
Search Deals
Ryanair
  • Ryanair
  • 9/9
  • 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).
Search Deals
Cheapest flight prices on average. 3% potential price decrease (£4 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
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

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 13 August 2026.
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

Wed 9/9

17:55-20:45

Nonstop2h 50m

Lisbon Humberto Delgado

Sat 19/9

09:50-12:35

Nonstop2h 45m

£102

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Wed 9/9

11:10-18:45

1 stop7h 35m

Lisbon Humberto Delgado

Sat 19/9

05:00-12:40

1 stop7h 40m

£158

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Mon 7/9

06:05-23:35

1 stop17h 30m

Lisbon Humberto Delgado

Tue 15/9

05:55-17:50

1 stop11h 55m

£165

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Mon 7/9

11:10-18:45

1 stop7h 35m

Lisbon Humberto Delgado

Tue 15/9

11:55-22:25

1 stop10h 30m

£167

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Fri 4/9

19:05-21:55

Nonstop2h 50m

Lisbon Humberto Delgado

Mon 7/9

22:30-01:15

Nonstop2h 45m

£207

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Fri 9/10

19:05-21:55

Nonstop2h 50m

Lisbon Humberto Delgado

Tue 13/10

06:30-09:15

Nonstop2h 45m

£224

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Tue 22/12

12:50-08:30

1 stop19h 40m

Lisbon Humberto Delgado

Sun 27/12

21:05-12:05

1 stop15h 00m

£227

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Thu 8/10

06:10-09:00

Nonstop2h 50m

Lisbon Humberto Delgado

Mon 12/10

22:30-01:15

Nonstop2h 45m

£237
Cheapest one-way

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Sun 6/12

15:15-18:15

Nonstop3h 00m

£49
Fastest single journey

DublinLisbon

DUB Dublin - LIS Lisbon Humberto Delgado

DUBLIS

Dublin

Sat 10/10

18:00-20:50

Nonstop2h 50m

£49

Flights are sorted by cheapest return flights first.

Deals found on 10/8

Showing 1-10 of 19 resultsSorted by cheapest first
1
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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
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 £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?

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 13 August 2026.

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.

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 13 August 2026.

The most flights from IE0 to LIS are scheduled on a Tuesday (8 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (1 on average).

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

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 13 August 2026.
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
1,697 reviews
Check prices

Food

6.7

Crew

8.1

Entertainment

7.0

Boarding

7.5

Comfort

7.2

Overall

7.3

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
1,697 reviews
Aer Lingus
7.3
Good
1,697 reviews
Check prices

Food

6.7

Crew

8.1

Entertainment

7.0

Boarding

7.5

Comfort

7.2

Overall

7.3

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
2,365 reviews
Aer Lingus
7.3
Good
1,697 reviews
Check prices

Food

6.7

Crew

8.1

Entertainment

7.0

Boarding

7.5

Comfort

7.2

Overall

7.3

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
5,466 reviews
Aer Lingus
7.3
Good
1,697 reviews
Check prices

Food

6.7

Crew

8.1

Entertainment

7.0

Boarding

7.5

Comfort

7.2

Overall

7.3

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

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

  • How long is the flight from Ireland to Lisbon?

    Ryanair and KLM can get you from Ireland to Lisbon in just under 2h 50m. Your travel time can differ by up to 4h 45m. 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 (82%), Aer Lingus (79%) or Azores Airlines (70%) 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 £1,106. The most popular route, (Dublin - Lisbon Humberto Delgado), can usually be booked for £107.

  • 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
Oeiras
Fátima
Nazaré
Evora
Madeira
Setúbal
Almada
Óbidos
Tomar
Estoril
Figueira da Foz
Sintra
Costa da Caparica

Browse thousands of different options on Cheapflights for your next trip

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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 13 August 2026.
AirlineCheapestAverageFlexibilityOn-time
Aer LingusCheapest£51Average£152FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
RyanairCheapest£55Average£132FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
TAP AIR PORTUGALCheapest£103Average£167FlexibilityNo 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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