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Cheap flights from Northern Ireland to Porto from £34

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 28/8. Fares are subject to change and may not be available on all flights or dates of travel.
BFS — OPO
7 Sep — 14 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Northern Ireland to Porto

Enter your travel dates to find the best prices.

Cheapest flights from Northern Ireland to Porto
Explore the most affordable flight options available from Northern Ireland to Porto. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 8 August 2026.

Mon 7/918:50 -
1 stop14h 10m
Fri 11/905:55 -
1 stop13h 00m
Deal found 8/8£82
Fri 4/917:20 -
Nonstop2h 30m
Mon 7/907:15 -
Nonstop2h 30m
Deal found 5/8£87
Wed 2/908:30 -
1 stop14h 30m
Wed 9/906:05 -
1 stop13h 45m
Deal found 4/8£88
Fri 18/917:20 -
Nonstop2h 30m
Fri 25/906:15 -
1 stop16h 45m
Deal found 7/8£92
Mon 28/908:40 -
1 stop12h 00m
Wed 30/922:30 -
1 stop14h 05m
Deal found 7/8£94
Sat 24/1021:40 -
1 stop15h 30m
Wed 28/1010:15 -
Nonstop2h 30m
Deal found 6/8£96
Wed 16/914:45 -
1 stop6h 55m
Wed 23/922:30 -
1 stop12h 50m
Deal found 4/8£107
Mon 28/909:30 -
1 stop11h 10m
Wed 30/922:30 -
1 stop12h 50m
Deal found 8/8£115
Wed 16/914:45 -
1 stop6h 55m
Thu 8/1009:55 -
1 stop5h 35m
Deal found 4/8£129
Tue 1/906:50 -
1 stop15h 20m
Tue 8/922:20 -
2 stops15h 55m
Deal found 4/8£140
Wed 26/809:20 -
1 stop12h 20m
Sat 5/921:35 -
1 stop12h 15m
Deal found 7/8£147
Thu 17/911:45 -
2 stops19h 10m
Sun 20/906:05 -
1 stop14h 55m
Deal found 6/8£151

Find flight deals from Northern Ireland to Porto

Keep the following information in mind while searching for Northern Ireland to Porto flight deals. Data was last updated 8 August 2026.

Round-trip from

£87

One-way from

£34

Popular in

March

Cheapest in

May

Average price

£168

Good round-trip deal

£97 or less
Ryanair
  • Ryanair
  • 4/9-7/9
  • Nonstop
  • 5h 00m total
  • Northern Ireland to Porto
Search Deals
Ryanair
  • Ryanair
  • 28/8
  • Nonstop
  • 2h 30m total
  • Northern Ireland to Porto
Search Deals
Highest demand for flights based on searches. 66% potential increase in price (£287 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 27% potential price decrease (£33 potential savings vs. average return price).
Search Deals
Average for round-trip flights in August 2026
Search Deals
Price to beat on a round-trip flight from Northern Ireland to Porto.
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Northern Ireland to Porto 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 8 August 2026.
Use the filters below to find and compare flights from Northern Ireland to Porto that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

BelfastPorto

BFS Belfast Intl - OPO Porto

BFSOPO

Belfast Intl

Mon 28/9

10:30-13:00

Nonstop2h 30m

Porto

Wed 30/9

22:30-09:10

1 stop10h 40m

£94

BelfastPorto

BFS Belfast Intl - OPO Porto

BFSOPO

Belfast Intl

Wed 2/9

21:05-16:15

2 stops19h 10m

Porto

Wed 9/9

06:05-19:50

1 stop13h 45m

£101
Fastest return journey

BelfastPorto

BFS Belfast Intl - OPO Porto

BFSOPO

Belfast Intl

Fri 4/9

17:20-19:50

Nonstop2h 30m

Porto

Mon 7/9

07:15-09:45

Nonstop2h 30m

£105

BelfastPorto

BFS Belfast Intl - OPO Porto

BFSOPO

Belfast Intl

Fri 25/9

17:20-19:50

Nonstop2h 30m

Porto

Mon 28/9

07:15-09:45

Nonstop2h 30m

£106

BelfastPorto

BFS Belfast Intl - OPO Porto

BFSOPO

Belfast Intl

Fri 18/9

17:20-19:50

Nonstop2h 30m

Porto

Mon 21/9

07:15-09:45

Nonstop2h 30m

£109

BelfastPorto

BFS Belfast Intl - OPO Porto

BFSOPO

Belfast Intl

Sat 24/10

20:15-14:05

2 stops17h 50m

Porto

Wed 28/10

10:15-12:45

Nonstop2h 30m

£115

BelfastPorto

BFS Belfast Intl - OPO Porto

BFSOPO

Belfast Intl

Fri 18/9

17:20-19:50

Nonstop2h 30m

Porto

Mon 21/9

20:50-12:15

2 stops15h 25m

£115

BelfastPorto

BFS Belfast Intl - OPO Porto

BFSOPO

Belfast Intl

Fri 18/9

11:25-19:10

1 stop7h 45m

Porto

Fri 25/9

22:20-21:15

2 stops22h 55m

£119

BelfastPorto

BFS Belfast Intl - OPO Porto

BFSOPO

Belfast Intl

Fri 4/9

11:25-19:10

1 stop7h 45m

Porto

Mon 7/9

22:45-08:55

1 stop10h 10m

£120

BelfastPorto

BHD Belfast City - OPO Porto

BHDOPO

Belfast City

Wed 16/9

14:45-21:40

1 stop6h 55m

Porto

Wed 23/9

20:45-15:30

2 stops18h 45m

£125

Flights are sorted by cheapest return flights first.

Deals found on 7/8

Showing 1-10 of 40 resultsSorted by cheapest first
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Best time to book a flight from Northern Ireland to Porto

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

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

Find hourly flight availability from Northern Ireland to Porto. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 8 August 2026.

When flying from Northern Ireland to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

How much does it cost for a return flight from Northern Ireland to Porto?

Airfare is below average for this route at the moment.
Northern Ireland to Porto flights typically cost between £152 and £207 in September.
The cheapest return price found within the last 5 days was £82 on Multiple Airlines (7 Sept–11 Sept).

Related info for your journey

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

    Porto (OPO), located 6.8 mi from the city center, is the airport you fly into when you book flights from Northern Ireland to Porto.

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

    For as low as £87, Ryanair can have you in Porto from Northern Ireland in 2h 30m. Northern Ireland and Porto are separated by a distance of 933 mi. Most flights are nonstop.

  • What are the cheapest flights from Northern Ireland to Porto?

    While on average a flight from Northern Ireland to Porto is generally £125, our data shows the cheapest flight currently is £76. When looking at the most popular route, (Belfast Intl - Porto), you can expect to pay £92 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Northern Ireland to Porto 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

Travelling to a place near Porto?

Book flights to Porto if you plan to visit one of these locations
Santa Maria da Feira
Viseu
Guimarães
Chaves
Coimbra
Vila Nova de Gaia
Aveiro

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Top 2 airlines flying from Northern Ireland to Porto

Discover the top 2 airlines that operate flights from Northern Ireland to Porto. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 8 August 2026.
AirlineCheapestAverageFlexibilityOn-time
RyanairCheapest£47Average£139FlexibilityNo cancel feeOn-timeN/A
Search Ryanair flights
RyanairCheapest£69Average£122FlexibilityNo cancel feeOn-timeN/A
Search Ryanair 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 Northern Ireland to Porto?

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 Porto from Northern Ireland today with Cheapflights!

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

Cheapflights simply makes it quick and affordable to book flights from Northern Ireland to Porto 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 Northern Ireland to Porto with no change fees?

Yes, we can. To see specific flights from Northern Ireland to Porto with no change fees, users can toggle flexible booking options after using the search form above to find flights.

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

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