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Cheap flights from Portugal to Northern Ireland from £36

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 10/2. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — BFS
11 Jan — 18 Jan1
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 12 December 2025.

Sun 21/1208:20OPO - BHD
2 stops8h 25mMultiple Airlines
Tue 23/1206:35BHD - OPO
2 stops9h 25mMultiple Airlines
Deal found 10/12£713
Sun 21/1211:15OPO - BHD
1 stop5h 35mKLM
Tue 23/1206:30BHD - OPO
1 stop15h 55mKLM
Deal found 10/12£718

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 12 December 2025.

Round-trip from

£109

One-way from

£36

Popular in

July

Cheapest in

November

Average price

£122

Good one-way deal

£67 or less
25/1-1/2
  • 25/1-1/2
  • 2 total stops
  • 17h 00m total
  • Portugal to Northern Ireland
Search Deals
easyJet
  • easyJet
  • 10/2
  • 1 total stop
  • 6h 10m total
  • Portugal to Northern Ireland
Search Deals
Highest demand for flights based on searches. 22% potential increase in price (£19 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 9% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in December 2025
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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 12 December 2025.
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 26/1

10:15-20:40

1 stop10h 25m

Belfast Intl

Mon 2/2

06:55-13:35

1 stop6h 40m

£90

PortoBelfast

OPO - BFS

OPOBFS

Porto

Sun 25/1

12:15-23:50

1 stop11h 35m

Belfast Intl

Sun 1/2

05:45-11:10

1 stop5h 25m

£109

PortoBelfast

OPO - BFS

OPOBFS

Porto

Sun 25/1

21:05-07:45

1 stop10h 40m

Belfast Intl

Sun 1/2

20:45-12:05

1 stop15h 20m

£110

LisbonBelfast

LIS - BFS

LISBFS

Lisbon Humberto Delgado

Sun 25/1

06:30-07:25

1 stop24h 55m

Belfast Intl

Sun 1/2

16:45-21:05

1 stop28h 20m

£117

PortoBelfast

OPO - BFS

OPOBFS

Porto

Fri 13/2

06:20-08:40

1 stop26h 20m

Belfast Intl

Sun 15/2

15:45-13:35

1 stop21h 50m

£138

PortoBelfast

OPO - BHD

OPOBHD

Porto

Fri 13/2

06:20-20:55

1 stop14h 35m

Belfast City

Sun 15/2

08:40-20:35

1 stop11h 55m

£149

LisbonBelfast

LIS - BHD

LISBHD

Lisbon Humberto Delgado

Thu 22/1

18:35-10:20

1 stop15h 45m

Belfast City

Mon 26/1

19:25-21:55

1 stop26h 30m

£206

LisbonBelfast

LIS - BHD

LISBHD

Lisbon Humberto Delgado

Tue 3/3

12:55-18:35

1 stop5h 40m

Belfast City

Wed 4/3

09:15-17:40

1 stop8h 25m

£246

PortoBelfast

OPO - BHD

OPOBHD

Porto

Fri 17/4

20:40-15:30

2 stops18h 50m

Belfast City

Sun 19/4

06:50-07:40

2 stops24h 50m

£409

PortoBelfast

OPO - BHD

OPOBHD

Porto

Sun 21/12

08:20-16:45

2 stops8h 25m

Belfast City

Tue 23/12

06:35-16:00

2 stops9h 25m

£713

Flights are sorted by cheapest return flights first.

Deals found on 11/12

Showing 1-10 of 30 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 £319). 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 12 December 2025.

It’s optimal to fly from Portugal to Northern Ireland in the afternoon. By choosing this option you can save up to 57% 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 10h 40m. 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 easyJet and Jet2, 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 £319). 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

See prices for flight routes from nearby airports that may be better suited for you.
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Lyon to Stansted flights
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Amsterdam to Stansted flights
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Fly with Cheapflights

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

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

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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.

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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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