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Cheap flights from Porto to Northern Ireland from £31

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 10/9. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — BFS
31 Aug — 7 Sep1
1 adult

Cheap flight deals from Porto to Northern Ireland

Keep the following information in mind while searching for Porto to Northern Ireland flight deals. Data was last updated 26 August 2025.

Round-trip from

£139

One-way from

£31
9/10-16/10
  • 9/10-16/10
  • 3 total stops
  • 33h 55m total
  • Porto to Northern Ireland
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Ryanair
  • Ryanair
  • 10/9
  • Nonstop
  • 2h 30m total
  • Porto to Northern Ireland
Search Deals

Find flight deals from Porto to Northern Ireland

Cheapest flights from Porto to Northern Ireland
Explore the most affordable flight options available from Porto to Northern Ireland. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 26 August 2025.

Thu 9/1016:00OPO - BFS
2 stops22h 30mMultiple Airlines
Thu 16/1009:25BFS - OPO
1 stop11h 25mMultiple Airlines
Deal found 25/8£139
Wed 3/922:40OPO - BFS
1 stop10h 20mMultiple Airlines
Fri 26/921:40BFS - OPO
1 stop11h 10mMultiple Airlines
Deal found 24/8£154
Thu 20/1106:40OPO - BHD
1 stop9h 25mMultiple Airlines
Fri 21/1106:50BHD - OPO
1 stop4h 45mMultiple Airlines
Deal found 23/8£195
Wed 3/914:05OPO - BFS
Nonstop2h 30mRyanair
Fri 26/921:40BFS - OPO
1 stop11h 10mRyanair
Deal found 24/8£196
Sat 30/813:30OPO - BFS
Nonstop2h 30mMultiple Airlines
Wed 3/921:45BFS - OPO
1 stop24h 05mMultiple Airlines
Deal found 25/8£207
Sat 30/813:30OPO - BFS
Nonstop2h 30mRyanair
Wed 3/911:10BFS - OPO
Nonstop2h 30mRyanair
Deal found 25/8£220
Thu 20/1112:25OPO - BHD
2 stops19h 05mBritish Airways
Fri 21/1119:35BHD - OPO
2 stops20h 25mBritish Airways
Deal found 23/8£300
Wed 3/920:10OPO - BHD
1 stop20h 45mKLM
Fri 26/917:25BHD - OPO
1 stop17h 15mKLM
Deal found 24/8£323
Sun 23/1112:25OPO - BHD
2 stops8h 05mBritish Airways
Tue 25/1110:00BHD - OPO
2 stops10h 00mBritish Airways
Deal found 23/8£333
Sat 30/806:05OPO - BHD
1 stop15h 10mKLM
Wed 3/917:25BHD - OPO
1 stop17h 15mKLM
Deal found 25/8£345
Sat 30/822:20OPO - BHD
2 stops19h 15mMultiple Airlines
Wed 3/909:05BHD - OPO
1 stop8h 10mMultiple Airlines
Deal found 25/8£348
Sun 23/1112:25OPO - BHD
2 stops8h 05mMultiple Airlines
Mon 24/1106:35BHD - OPO
2 stops13h 25mMultiple Airlines
Deal found 23/8£362

Cheapflights Fare Finder

 
Customise your flight search to find flights from Porto 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 26 August 2025.
Use the filters below to find and compare flights from Porto to Northern Ireland that are best for you.

Fly from

Porto

Fly to

Northern Ireland

Route

Depart

Return

Price

PortoBelfast

OPO - BFS

OPOBFS

Porto

Thu 9/10

16:00-14:30

2 stops22h 30m

Belfast Intl

Thu 16/10

09:25-20:50

1 stop11h 25m

£139

PortoBelfast

OPO - BHD

OPOBHD

Porto

Thu 20/11

06:40-16:05

1 stop9h 25m

Belfast City

Fri 21/11

06:50-11:35

1 stop4h 45m

£195

PortoBelfast

OPO - BHD

OPOBHD

Porto

Thu 20/11

12:25-07:30

2 stops19h 05m

Belfast City

Fri 21/11

19:35-16:00

2 stops20h 25m

£300

PortoBelfast

OPO - BHD

OPOBHD

Porto

Sun 23/11

12:25-20:30

2 stops8h 05m

Belfast City

Tue 25/11

10:00-20:00

2 stops10h 00m

£333

PortoBelfast

OPO - BHD

OPOBHD

Porto

Sun 23/11

12:25-20:30

2 stops8h 05m

Belfast City

Mon 24/11

06:35-20:00

2 stops13h 25m

£362

PortoBelfast

OPO - BHD

OPOBHD

Porto

Thu 20/11

11:15-16:50

1 stop5h 35m

Belfast City

Fri 21/11

17:20-10:30

1 stop17h 10m

£376

PortoBelfast

OPO - BHD

OPOBHD

Porto

Sun 23/11

12:25-20:30

2 stops8h 05m

Belfast City

Tue 25/11

06:30-15:25

1 stop8h 55m

£412

PortoBelfast

OPO - BHD

OPOBHD

Porto

Sun 21/12

12:25-08:25

2 stops20h 00m

Belfast City

Tue 23/12

06:35-16:00

2 stops9h 25m

£478

PortoBelfast

OPO - BHD

OPOBHD

Porto

Sun 23/11

16:10-16:50

1 stop24h 40m

Belfast City

Tue 25/11

06:30-15:25

1 stop8h 55m

£491

PortoBelfast

OPO - BFS

OPOBFS

Porto

Wed 10/9

14:05-16:35

Nonstop2h 30m

£31

Flights are sorted by cheapest return flights first.

Deals found on 24/8

Showing 1-10 of 29 results
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Best time to book a flight from Porto to Northern Ireland

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

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

Find hourly flight availability from Porto 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 26 August 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Porto to Northern Ireland as you normally would.

Related info for your journey

Find useful and relevant information for your journey from Porto to Northern Ireland. 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 from for flights from Porto to Northern Ireland?

    Located just 6.8 mi from the city center, Porto (OPO) is the airport most travelers will use when flying to Northern Ireland from Porto.

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

    Departing from Porto to Northern Ireland will take you 19h 05m. The distance from Porto to Northern Ireland is about 932 mi.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Porto 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 Porto to Northern Ireland?

    Currently, January is the cheapest month in which you can book a flight from Porto to Northern Ireland (average of £67). Flying from Porto to Northern Ireland in July is currently the most expensive (average of £90). 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 Porto to Northern Ireland

See prices for flight routes from nearby airports that may be better suited for you.
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How does Cheapflights help users find flights from Porto to Northern Ireland?

When you search for this flight from Porto to Northern Ireland, Cheapflights searches on 900+ travel sites to save you time finding great flight deals online. Additionally, we offer filter features so you can choose a preferred cabin class or airline, see different price ranges, and much more so you can book the flight for you.

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

Millions of users choose and trust Cheapflights to book the best flight deals from Porto to Northern Ireland for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.

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

Certainly. Search results for flights to Northern Ireland from Porto shown to you on Cheapflights can be narrowed down with different useful search filters, which includes flexible booking options.

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

Yes! Start tracking prices for Porto to Northern Ireland flights today and get alerted whenever prices for these flights change. To access this feature, click the bell icon next to the flight deals above, which will prompt you for a valid email address to receive your alerts.

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