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Cheap flights from Portugal to Northern Ireland from £25

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
4 Feb — 11 Feb1
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 5 January 2026.

Tue 17/206:00LIS - BFS
1 stop13h 05measyJet
Tue 24/208:10BFS - LIS
1 stop9h 35measyJet
Deal found 3/1£79
Thu 12/310:15OPO - BFS
1 stop5h 40measyJet
Sun 22/310:45BFS - OPO
1 stop9h 50measyJet
Deal found 2/1£100
Thu 12/310:15OPO - BFS
1 stop5h 40measyJet
Wed 18/306:30BFS - OPO
1 stop5h 35measyJet
Deal found 2/1£103
Fri 13/320:20OPO - BFS
1 stop12h 00measyJet
Fri 20/321:20BFS - OPO
1 stop11h 40measyJet
Deal found 2/1£104
Thu 12/310:15OPO - BFS
1 stop5h 40measyJet
Fri 20/321:20BFS - OPO
1 stop11h 40measyJet
Deal found 2/1£105
Tue 17/319:55OPO - BFS
1 stop15h 45mMultiple Airlines
Sun 22/322:45BFS - OPO
1 stop9h 35mMultiple Airlines
Deal found 2/1£109
Wed 18/220:55OPO - BFS
1 stop12h 15mMultiple Airlines
Wed 25/207:40BFS - OPO
1 stop8h 30mMultiple Airlines
Deal found 4/1£111
Thu 12/310:15OPO - BFS
1 stop5h 40measyJet
Mon 16/308:50BFS - OPO
1 stop9h 00measyJet
Deal found 2/1£111
Sat 14/314:05OPO - BFS
1 stop8h 40mMultiple Airlines
Wed 18/307:55BFS - OPO
1 stop13h 50mMultiple Airlines
Deal found 2/1£112
Mon 19/122:00LIS - BFS
1 stop11h 05mMultiple Airlines
Fri 23/121:20BFS - LIS
1 stop11h 20mMultiple Airlines
Deal found 3/1£112
Tue 17/319:55OPO - BFS
1 stop15h 45mMultiple Airlines
Fri 20/321:20BFS - OPO
1 stop12h 50mMultiple Airlines
Deal found 2/1£113
Thu 12/310:15OPO - BFS
1 stop5h 40measyJet
Sat 21/309:25BFS - OPO
1 stop7h 30measyJet
Deal found 2/1£114

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 5 January 2026.

Round-trip from

£79

One-way from

£25

Popular in

April

Cheapest in

November

Average price

£59
easyJet
  • easyJet
  • 17/2-24/2
  • 2 total stops
  • 22h 40m total
  • Portugal to Northern Ireland
Search Deals
Ryanair
  • Ryanair
  • 30/3
  • Nonstop
  • 2h 30m total
  • Portugal to Northern Ireland
Search Deals
Highest demand for flights based on searches. 27% potential increase in price (£27 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 17% potential price decrease (£11 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
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 5 January 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

LisbonBelfast

LIS - BFS

LISBFS

Lisbon Humberto Delgado

Tue 17/2

06:00-19:05

1 stop13h 05m

Belfast Intl

Tue 24/2

08:10-17:45

1 stop9h 35m

£79

PortoBelfast

OPO - BFS

OPOBFS

Porto

Fri 13/3

20:20-08:20

1 stop12h 00m

Belfast Intl

Sun 22/3

10:45-20:35

1 stop9h 50m

£100

PortoBelfast

OPO - BFS

OPOBFS

Porto

Mon 16/3

18:30-08:20

1 stop13h 50m

Belfast Intl

Sun 22/3

10:45-20:35

1 stop9h 50m

£100

PortoBelfast

OPO - BFS

OPOBFS

Porto

Fri 13/3

20:20-08:20

1 stop12h 00m

Belfast Intl

Wed 18/3

06:30-12:05

1 stop5h 35m

£103

PortoBelfast

OPO - BFS

OPOBFS

Porto

Thu 12/3

10:15-15:55

1 stop5h 40m

Belfast Intl

Wed 18/3

06:30-12:05

1 stop5h 35m

£103

PortoBelfast

OPO - BFS

OPOBFS

Porto

Mon 16/3

18:30-08:20

1 stop13h 50m

Belfast Intl

Wed 18/3

06:30-12:05

1 stop5h 35m

£103

PortoBelfast

OPO - BFS

OPOBFS

Porto

Mon 16/3

18:30-08:20

1 stop13h 50m

Belfast Intl

Fri 20/3

21:20-09:00

1 stop11h 40m

£104

PortoBelfast

OPO - BFS

OPOBFS

Porto

Fri 13/3

20:20-08:20

1 stop12h 00m

Belfast Intl

Fri 20/3

21:20-09:00

1 stop11h 40m

£104

PortoBelfast

OPO - BFS

OPOBFS

Porto

Thu 12/3

10:15-15:55

1 stop5h 40m

Belfast Intl

Fri 20/3

21:20-09:00

1 stop11h 40m

£105

PortoBelfast

OPO - BFS

OPOBFS

Porto

Wed 18/3

12:35-20:10

1 stop7h 35m

Belfast Intl

Sun 22/3

10:45-20:35

1 stop9h 50m

£109

Flights are sorted by cheapest return flights first.

Deals found on 3/1

Showing 1-10 of 60 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 month to book a flight from Portugal to Northern Ireland?

Currently, February is the cheapest month in which you can book a flight from Portugal to Northern Ireland (average of £31). Flying from Portugal to Northern Ireland in August is currently the most expensive (average of £317). 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 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 5 January 2026.

It’s optimal to fly from Portugal to Northern Ireland in the afternoon. By choosing this option you can save up to 43% 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 13h 05m. There are 1105 mi between Portugal and Northern Ireland.

  • 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.

  • What is the cheapest month to book a flight from Portugal to Northern Ireland?

    Currently, February is the cheapest month in which you can book a flight from Portugal to Northern Ireland (average of £31). Flying from Portugal to Northern Ireland in August is currently the most expensive (average of £317). 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

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Portugal to Northern Ireland

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Fly with Cheapflights

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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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