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Cheap flights from Portugal to Northern Ireland from £18

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 30/3. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — BFS
22 Mar — 29 Mar1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Portugal to Northern Ireland

Enter your travel dates to find the best prices.

Cheapest flights from Portugal to Northern Ireland
Explore the most affordable flight options available from Portugal to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 20 February 2026.

Mon 6/407:15
OPO
-
BFS
Nonstop2h 30m
Ryanair
Mon 13/410:30
BFS
-
OPO
Nonstop2h 30m
Ryanair
Deal found 20/2£62
Fri 3/414:25
OPO
-
BFS
Nonstop2h 30m
Ryanair
Fri 10/417:20
BFS
-
OPO
Nonstop2h 30m
Ryanair
Deal found 17/2£91
Thu 5/316:50
LIS
-
BFS
1 stop6h 00m
Multiple Airlines
Wed 11/307:40
BFS
-
LIS
1 stop11h 30m
Multiple Airlines
Deal found 18/2£98
Mon 6/407:15
OPO
-
BFS
Nonstop2h 30m
Multiple Airlines
Mon 13/421:55
BFS
-
OPO
2 stops16h 10m
Multiple Airlines
Deal found 20/2£106
Fri 3/414:25
OPO
-
BFS
Nonstop2h 30m
Multiple Airlines
Fri 10/407:35
BFS
-
OPO
2 stops14h 20m
Multiple Airlines
Deal found 17/2£108
Sat 25/406:40
LIS
-
BFS
1 stop8h 10m
easyJet
Mon 27/421:50
BFS
-
LIS
1 stop11h 25m
easyJet
Deal found 17/2£112
Fri 3/421:40
LIS
-
BFS
1 stop13h 05m
Multiple Airlines
Fri 10/407:35
BFS
-
LIS
1 stop11h 00m
Multiple Airlines
Deal found 18/2£121
Thu 5/315:10
LIS
-
BHD
1 stop5h 40m
Multiple Airlines
Wed 11/307:25
BHD
-
LIS
1 stop11h 45m
Multiple Airlines
Deal found 18/2£122
Sun 5/416:25
OPO
-
BFS
1 stop15h 50m
Multiple Airlines
Sun 12/412:45
BFS
-
OPO
1 stop24h 30m
Multiple Airlines
Deal found 19/2£127
Sun 22/309:30
OPO
-
BFS
1 stop24h 55m
Multiple Airlines
Thu 26/314:00
BFS
-
OPO
1 stop25h 55m
Multiple Airlines
Deal found 19/2£134
Sat 4/415:50
LIS
-
BFS
1 stop16h 10m
Multiple Airlines
Sat 11/407:40
BFS
-
LIS
1 stop25h 55m
Multiple Airlines
Deal found 18/2£137
Sun 5/420:45
LIS
-
BFS
1 stop12h 05m
Multiple Airlines
Sun 12/416:30
BFS
-
LIS
1 stop29h 05m
Multiple Airlines
Deal found 18/2£145

Find flight deals from Portugal to Northern Ireland

Keep the following information in mind while searching for Portugal to Northern Ireland flight deals. Data was last updated 20 February 2026.

Round-trip from

£62

One-way from

£18

Good one-way deal

£101 or less
Ryanair
  • Ryanair
  • 6/4-13/4
  • Nonstop
  • 5h 00m total
  • Portugal to Northern Ireland
Search Deals
Ryanair
  • Ryanair
  • 30/3
  • Nonstop
  • 2h 30m total
  • Portugal to Northern Ireland
Search Deals
Price to beat on a one-way flight from Portugal to Northern Ireland.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Portugal to Northern Ireland 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 20 February 2026.
Use the filters below to find and compare flights from Portugal to Northern Ireland that are best for you.

Fly from

Portugal

Fly to

Northern Ireland

Route

Depart

Return

Price

PortoBelfast

OPO - BFS

OPOBFS

Porto

Mon 6/4

07:15-09:45

Nonstop2h 30m

Belfast Intl

Mon 13/4

10:30-13:00

Nonstop2h 30m

£62

PortoBelfast

OPO - BFS

OPOBFS

Porto

Fri 3/4

14:25-16:55

Nonstop2h 30m

Belfast Intl

Fri 10/4

17:20-19:50

Nonstop2h 30m

£91

LisbonBelfast

LIS - BFS

LISBFS

Lisbon Humberto Delgado

Thu 5/3

16:50-22:50

1 stop6h 00m

Belfast Intl

Wed 11/3

07:40-19:10

1 stop11h 30m

£98

PortoBelfast

OPO - BFS

OPOBFS

Porto

Mon 6/4

07:15-09:45

Nonstop2h 30m

Belfast Intl

Mon 13/4

21:55-14:05

2 stops16h 10m

£106

PortoBelfast

OPO - BFS

OPOBFS

Porto

Fri 3/4

14:25-16:55

Nonstop2h 30m

Belfast Intl

Fri 10/4

07:35-21:55

2 stops14h 20m

£108

LisbonBelfast

LIS - BFS

LISBFS

Lisbon Humberto Delgado

Sat 25/4

06:40-14:50

1 stop8h 10m

Belfast Intl

Mon 27/4

21:50-09:15

1 stop11h 25m

£112

LisbonBelfast

LIS - BFS

LISBFS

Lisbon Humberto Delgado

Fri 3/4

21:40-10:45

1 stop13h 05m

Belfast Intl

Fri 10/4

07:35-18:35

1 stop11h 00m

£121

LisbonBelfast

LIS - BHD

LISBHD

Lisbon Humberto Delgado

Thu 5/3

15:10-20:50

1 stop5h 40m

Belfast City

Wed 11/3

07:25-19:10

1 stop11h 45m

£122

PortoBelfast

OPO - BFS

OPOBFS

Porto

Sun 5/4

16:25-08:15

1 stop15h 50m

Belfast Intl

Sun 12/4

12:45-13:15

1 stop24h 30m

£127

PortoBelfast

OPO - BFS

OPOBFS

Porto

Sun 22/3

09:30-10:25

1 stop24h 55m

Belfast Intl

Thu 26/3

14:00-15:55

1 stop25h 55m

£134

Flights are sorted by cheapest return flights first.

Deals found on 17/2

Showing 1-10 of 53 results
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Best time to book a flight from Portugal to Northern Ireland

Have a flexible travel schedule? Discover the best time to fly to Northern Ireland from Portugal 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 Portugal to Northern Ireland

What is the cheapest time of day to fly from PT to NIR?

Find hourly flight availability from Portugal to Northern Ireland. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 20 February 2026.

It’s optimal to fly from Portugal to Northern Ireland in the afternoon. By choosing this option you can save up to 59% on the cost of your flight, compared to a flight at midday.

Related info for your journey

Find useful and relevant information for your journey from Portugal to Northern Ireland. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Portugal to Northern Ireland?

    Departing from Portugal to Northern Ireland will take you 2h 30m. There are 933 mi between Portugal and Northern Ireland. This flight may include one or multiple stops.

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

    The cheapest airline one-way is Ryanair, with whom users have recently found tickets for as low as £13. However, be on the lookout for offers from Jet2 and easyJet, as they are both options that can get you from Portugal to Northern Ireland for a low price.

  • Can I find deals for flights from Portugal to Northern Ireland that include hotel bookings?

    Yes. In addition to deals on Portugal to Northern Ireland flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Portugal to Northern Ireland?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portugal to Northern Ireland.

  • Can I find deals for business class flights from Portugal to Northern Ireland?

    Yes. Cheapflights offers flight deals from Portugal to Northern Ireland by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portugal to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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Charles de Gaulle to Gatwick flights
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Duesseldorf Intl to Stansted flights
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Madrid to Heathrow flights
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Vienna to Heathrow flights
Bruxelles-National to Gatwick flights
Beauvais-Tille to Stansted flights
Bruxelles-National to Luton flights
Bruxelles-National to Stansted flights
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Madrid to Stansted flights
Madrid to London City flights
Amsterdam to Gatwick flights
Frankfurt to Luton flights
Frederic Chopin to Heathrow flights
Malpensa to Gatwick flights
Amsterdam to Luton flights
Duesseldorf Intl to Luton flights
Amsterdam to Stansted flights
Malpensa to London City flights
Madrid to Luton flights
Malpensa to Stansted flights
Amsterdam to London City flights
Vienna to Stansted flights
Linate to Gatwick flights
Vienna to London City flights
Amsterdam to Southend flights
Arlanda to Heathrow flights
Nantes to Stansted flights
Frankfurt to Heathrow flights
Lyon to Heathrow flights
Lyon to Gatwick flights
Gatwick to Edinburgh flights
Marseille to Gatwick flights
Dublin to Gatwick flights
Barcelona-El Prat to Luton flights
Nantes to Heathrow flights
Madrid to Edinburgh flights
Stansted to Edinburgh flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Portugal to Northern Ireland?

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 Northern Ireland from Portugal today with Cheapflights!

Why should you use Cheapflights to find cheap flight tickets from Portugal to Northern Ireland?

Cheapflights simply makes it quick and affordable to book flights from Portugal to Northern Ireland by bringing together all flight options from hundreds of airlines and agencies online — and put it in one place for you to choose from. Plus, Cheapflights is 100% free to use for all.

Can Cheapflights find flights from Portugal to Northern Ireland with no change fees?

Yes! Cheapflights helps users easily find flights from Portugal to Northern Ireland with no change fees.

Can Cheapflights notify me if prices for flights from Portugal to Northern Ireland become cheaper?

Of course! You can now track prices for flights from Portugal to Northern Ireland 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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