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Cheap flights from Porto to Belfast Intl Airport from £43

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 1/9. Fares are subject to change and may not be available on all flights or dates of travel.
OPO — BFS
2 Sep — 9 Sep1
1 adult
1 adult, Economy, 0 bags

Cheap flight deals from Porto to Belfast Intl

Enter your travel dates to find the best prices.

Cheapest flights from Porto to Belfast Intl
Explore the most affordable flight options available from Porto to Belfast Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 3 August 2026.

Fri 4/905:55
OPO
-
BFS
1 stop13h 00m
Multiple Airlines
Mon 7/908:40
BFS
-
OPO
1 stop12h 00m
Multiple Airlines
Deal found 31/7£86
Mon 7/907:15
OPO
-
BFS
Nonstop2h 30m
Multiple Airlines
Wed 9/916:10
BFS
-
OPO
1 stop5h 30m
Multiple Airlines
Deal found 30/7£91
Fri 7/814:25
OPO
-
BFS
Nonstop2h 30m
Ryanair
Mon 10/810:30
BFS
-
OPO
Nonstop2h 30m
Ryanair
Deal found 31/7£116
Fri 28/805:55
OPO
-
BFS
1 stop5h 55m
Multiple Airlines
Mon 31/810:30
BFS
-
OPO
Nonstop2h 30m
Multiple Airlines
Deal found 1/8£117
Fri 7/814:25
OPO
-
BFS
Nonstop2h 30m
Multiple Airlines
Mon 10/821:55
BFS
-
OPO
1 stop22h 45m
Multiple Airlines
Deal found 31/7£128

Find flight deals from Porto to Belfast Intl

Discover tips and strategies to find the most affordable flight options for your journey from Porto (OPO) to Belfast Intl (BFS). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 3 August 2026.

Round-trip from

£86

One-way from

£43
4/9-7/9
  • 4/9-7/9
  • 2 total stops
  • 25h 00m total
  • Porto to Belfast
Search Deals
1/9
  • 1/9
  • 1 total stop
  • 9h 35m total
  • Porto to Belfast
Search Deals

Cheapflights Fare Finder

 
Customise your flight search to find flights from Porto to Belfast Intl 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 3 August 2026.
Use the filters below to find and compare flights from Porto to Belfast Intl Airport that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest return flight

PortoBelfast

OPO - BFS

OPOBFS

Porto

Fri 4/9

05:55-18:55

1 stop13h 00m

Belfast Intl

Mon 7/9

08:40-20:40

1 stop12h 00m

£86
Fastest return journey

PortoBelfast

OPO - BFS

OPOBFS

Porto

Mon 7/9

07:15-09:45

Nonstop2h 30m

Belfast Intl

Wed 9/9

16:10-21:40

1 stop5h 30m

£91

PortoBelfast

OPO - BFS

OPOBFS

Porto

Fri 28/8

05:55-11:50

1 stop5h 55m

Belfast Intl

Mon 31/8

10:30-13:00

Nonstop2h 30m

£117

PortoBelfast

OPO - BFS

OPOBFS

Porto

Fri 9/10

06:35-15:30

1 stop8h 55m

Belfast Intl

Mon 12/10

10:00-15:45

1 stop5h 45m

£119
Cheapest one-way

PortoBelfast

OPO - BFS

OPOBFS

Porto

Wed 30/9

22:30-12:35

1 stop14h 05m

£55

PortoBelfast

OPO - BFS

OPOBFS

Porto

Sat 26/9

07:05-14:15

1 stop7h 10m

£60
Fastest single journey

PortoBelfast

OPO - BFS

OPOBFS

Porto

Mon 28/9

07:15-09:45

Nonstop2h 30m

£62

PortoBelfast

OPO - BFS

OPOBFS

Porto

Thu 27/8

21:45-18:55

1 stop21h 10m

£64

PortoBelfast

OPO - BFS

OPOBFS

Porto

Mon 28/9

20:50-12:15

2 stops15h 25m

£66

PortoBelfast

OPO - BFS

OPOBFS

Porto

Fri 28/8

05:55-18:55

1 stop13h 00m

£70

Flights are sorted by cheapest return flights first.

Deals found on 2/8

Showing 1-10 of 15 resultsSorted by cheapest first
1
2

Best time to book a flight from Porto to Belfast Intl

Have a flexible travel schedule? Discover the best time to fly to Belfast Intl 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 Belfast Intl Airport

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

Find hourly flight availability from Porto to Belfast Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 3 August 2026.

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

Related info for your journey

Find useful and relevant information for your journey from Porto to Belfast Intl. 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 Belfast Intl?

    For a flight from Porto to Belfast Intl, you will be flying from Porto. Porto (OPO) is just 6.8 mi from the center of the city. Porto is the only Porto airport and it handles 0 outbound flights to Belfast Intl per day. 0 airlines have flights to Belfast Intl from Porto on a regular basis.

  • Can I find deals for flights from Porto to Belfast Intl that include hotel bookings?

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

  • How can I find direct flights from Porto to Belfast Intl?

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

  • Can I find deals for business class flights from Porto to Belfast Intl?

    Yes. Cheapflights offers flight deals from Porto to Belfast Intl 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 Belfast Intl Airport?

Book flights to Belfast Intl Airport if you plan to visit one of these locations
Armagh
Newry

Browse thousands of different options on Cheapflights for your next trip

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Alternative routes for Porto to Belfast Intl

See prices for flight routes from nearby airports that may be better suited for you.
Lisbon to Belfast Intl flights
Porto to Belfast City flights
Lisbon to Belfast City 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 Porto to Belfast Intl?

Cheapflights goes through 900+ travel sites to look for the best flight deals for flights from Porto to Belfast Intl. Too many options? Cheapflights also provides filters for things like airlines, price ranges, and number of stops to help you make a decision easily.

Why should you use Cheapflights to find cheap flight tickets from Porto to Belfast Intl?

Cheapflights taps into our reliable network of hundreds of airlines and travel agencies to find the best deals for flights from Porto to Belfast Intl for you. Better yet — we are completely free to use.

Can Cheapflights find flights from Porto to Belfast Intl with no change fees?

Certainly. Search results for flights to Belfast Intl 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 Belfast Intl become cheaper?

Of course! You can now track prices for flights from Porto to Belfast Intl 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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