Question 1

Why should I use momondo to find a flight deal to Lisbon?

Accepted Answer

We help find the flight that best suits your needs; momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight for you.

Question 2

Can I find flights to Lisbon with flexible booking policies on momondo?

Accepted Answer

Yes. momondo allows you to filter the results for flights to Lisbon to just show those with flexible booking policies.

Question 3

How can momondo help me find flights to Lisbon?

Accepted Answer

momondo helps you find the best flight to Lisbon by providing filters to narrow your choice of flights to those matching your criteria. You can select fights based on numerous factors such as price, departure and landing times, airport and airline.

Question 4

I’m not ready to book a flight to Lisbon right now. Can momondo alert me if prices change?

Accepted Answer

Price alerts on flights to Lisbon are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

Question 5

How far in advance should I book a flight to Lisbon?

Accepted Answer

We recommend purchasing flights from Ireland to Lisbon 84 days ahead of your departure date because this is when momondo users tend to see the best flight rates. On average, our users have found flights to Lisbon for €162. In the past 72 hours, momondo users found flights from Ireland to Lisbon for as low as €81.

Question 6

Is there an alternative airport near Lisbon?

Accepted Answer

Those flying to Lisbon could potentially find better pricing at Cascais Aerodrome Airport (19 km from Lisbon city centre) depending on the month and departure airport.

Question 7

Which airlines fly to Lisbon?

Accepted Answer

Based on our data, the most popular airlines that fly to Lisbon from Ireland are Ryanair, TAP AIR PORTUGAL, Aer Lingus and KLM. There may also be other airline options depending on where in Ireland you’re flying from.

Question 8

KLM Flights to Lisbon

Accepted Answer

24 KLM flights head to Lisbon on average each week. Most will be flying from Amsterdam Schiphol to Lisbon, the most popular route that KLM operates to Lisbon. Prices vary based on when and where you fly from - the cheapest KLM flight to Lisbon found in the past 3 days on momondo was €197, departing from Cork. KLM is the most popular choice on momondo for this route and has been scored 7.8/10 by 1,565 of our users.

Question 9

Aer Lingus Flights to Lisbon

Accepted Answer

Aer Lingus (7.3/10, 1,728 reviews) is also a popular choice for flights to Lisbon, with deals from as low as €91 from Dublin, return. With 3 Aer Lingus flights to Lisbon on average each week, prices can vary significantly by origin and availability.

Question 10

When did momondo last update prices for flights to Lisbon Humberto Delgado Airport?

Accepted Answer

Prices for flights to Lisbon Humberto Delgado Airport were last updated today.

Question 11

How many operators does momondo search for flights to Lisbon Humberto Delgado Airport?

Accepted Answer

The number of operators available for flights to Lisbon Humberto Delgado Airport is 14 as of August 2026.

Question 12

How old do you have to be to fly to Lisbon Humberto Delgado Airport?

Accepted Answer

The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel to Lisbon Humberto Delgado Airport.

Question 13

What documentation or ID do you need to fly to Lisbon Humberto Delgado Airport?

Accepted Answer

The necessary travel and health documents for your Lisbon Humberto Delgado Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Question 14

How far in advance should I book a flight to Lisbon?

Accepted Answer

You are more likely to see cheaper flights to Lisbon from Ireland when booking weeks ahead of your departure date. In general, you can expect to find flights to Lisbon for around €162 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Lisbon from Ireland for as low as €135 on momondo.

Question 15

What is the cheapest time of day to depart on your flight to Lisbon?

Accepted Answer

According to our data, the cheapest time of day to fly to Lisbon is at midday. momondo users have found flights departing from Ireland to Lisbon at midday for as low as €78. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are €970 on average. Flights to Lisbon from Ireland in the evening are generally more expensive because this time of day is more convenient for travellers’ schedules.

Question 16

What is the cheapest month to fly to Lisbon?

Accepted Answer

In general, January is the cheapest month to fly from Ireland to Lisbon. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around €105. If you don’t want to visit Lisbon in January, then you should wait until November to fly from Ireland, when ticket prices are also cheap, with an average price of €124.

Question 17

What is the cheapest day to depart on your flight to Lisbon?

Accepted Answer

The cheapest day to depart from Ireland to Lisbon is on a Sunday. Travellers who choose to depart for Lisbon on a Sunday will often find tickets for as low as €314. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Lisbon on Thursday is €970.

Question 18

How long does it take to fly to Lisbon?

Accepted Answer

On average, it takes 2h 50m to fly from Ireland to Lisbon if you fly out of Dublin (the most popular airport in Ireland) and into Lisbon Humberto Delgado (the most popular airport in Lisbon). If you’re flying out of Cork and into Lisbon Humberto Delgado, then the flight time is around 6h 55m.

CHEAPEST MONTH TO FLY TO LISBON FROM DUBLIN	January	36% cheaper	Flying from Dublin to Lisbon costs on average just €105 in January
MOST EXPENSIVE MONTH TO FLY TO LISBON FROM DUBLIN	July	33% more expensive	It costs about €218 for flights to Lisbon from Dublin in July
MOST POPULAR MONTH TO FLY TO LISBON FROM DUBLIN	August	194% more users visited	More momondo users searched in flights to Lisbon from Dublin in August than any other month

Best One-Way Price	€47
Best Round-Trip Price	€95
Fastest flight time	2h 50m
Popular in	July

€47 Cheap flights to Lisbon

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to Lisbon departing on 30/9. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

Big names, great deals

Big names, great deals

Filter for what you want

Filter for what you want

Trusted and free

Trusted and free

Price Alerts

Price Alerts

Find the cheapest flights from Ireland to Lisbon

Cheap return flights

Cheap one-way flights

Cheap last-minute flights

Recent direct flight deals from Ireland to Lisbon

momondo Fare Finder

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

See travel insights to Lisbon from

Lisbon flights insights and trends

What is the cheapest month to fly to Lisbon?

What is the absolute cheapest flight to Lisbon?

See prices from:

What is the cheapest day to depart on your flight to Lisbon?

What is the cheapest time of day to depart on your flight to Lisbon?

How far in advance should I book a flight to Lisbon?

How long does it take to fly to Lisbon?

Cheapest flights to Lisbon Humberto Delgado

Find the cheapest flights to Lisbon Humberto Delgado from your nearest city or airport

Cheap Lisbon flight deals and tips

Best One-Way Price

Best Round-Trip Price

Fastest flight time

Popular in

Frequently asked questions about flying to Lisbon

Travelling to a place near Lisbon?

Why use momondo?

An easier way to manage your Lisbon Humberto Delgado trip

We make it super easy to schedule, organise and travel with friends or family. Trips is free – and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Lisbon

Popular Flights to Lisbon

Popular routes according to searches in the past day on momondo

Popular Cities in Portugal

Popular flights according to clicks in the last 7 days on momondo

Airports servicing Ireland

Fly your favourite airline to Lisbon

Airlines are sorted and displayed according to clicks in the past 7 days on momondo

Complete your trip to Lisbon Humberto Delgado

Explore popular destinations other users love

According to popular flight searches on momondo this year