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Cheap flights from Portugal to Northern Ireland from £77

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 20/11. Fares are subject to change and may not be available on all flights or dates of travel.
LIS — BFS
18 6月 — 25 6月1
1 adult

Cheap 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 13 6月 2025.

Round-trip from

£135

One-way from

£77

Popular in

September

Cheapest in

February

Average price

£64

Good one-way deal

£77 or less
28/6-2/7
  • 28/6-2/7
  • 2 total stops
  • 17h 55m total
  • Portugal to Northern Ireland
Search Deals
KLM
  • KLM
  • 20/11
  • 1 total stop
  • 16h 00m total
  • Portugal to Northern Ireland
Search Deals
Highest demand for flights based on searches. 38% potential increase in price (£49 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 10% potential price decrease (£8 potential savings vs. average return price).
Search Deals
Average for round-trip flights in June 2025
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Price to beat on a one-way flight from Portugal to Northern Ireland.
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Find flight deals from Portugal to Northern Ireland

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 13 6月 2025.

週六 28/613:30OPO - BFS
Nonstop2h 30mMultiple Airlines
週三 2/715:25BFS - OPO
2 stops15h 25mMultiple Airlines
Deal found 11/6£135
週六 28/613:30OPO - BFS
Nonstop2h 30mRyanair
週三 2/711:10BFS - OPO
Nonstop2h 30mRyanair
Deal found 11/6£142
週日 27/722:30LIS - BFS
2 stops12h 00mMultiple Airlines
週日 3/816:20BFS - LIS
2 stops31h 00mMultiple Airlines
Deal found 12/6£196
週四 3/706:45OPO - BHD
2 stops13h 10mMultiple Airlines
週三 9/711:00BHD - OPO
2 stops32h 40mMultiple Airlines
Deal found 11/6£221
週四 3/706:40OPO - BHD
1 stop8h 25measyJet
週三 9/707:05BHD - OPO
1 stop11h 45measyJet
Deal found 11/6£279
週四 10/707:00LIS - BHD
1 stop7h 40measyJet
週四 17/709:40BHD - LIS
1 stop9h 45measyJet
Deal found 12/6£280
週六 12/706:05LIS - BHD
1 stop6h 45mMultiple Airlines
週六 12/718:00BHD - LIS
2 stops28h 05mMultiple Airlines
Deal found 11/6£312
週六 28/619:00OPO - BHD
1 stop26h 15mKLM
週三 2/717:25BHD - OPO
1 stop17h 15mKLM
Deal found 11/6£314
週四 10/711:25LIS - BHD
2 stops22h 25mAer Lingus
週四 17/716:55BHD - LIS
2 stops28h 40mAer Lingus
Deal found 12/6£522
週六 28/608:15OPO - BHD
2 stops25h 05mBritish Airways
週三 2/718:30BHD - OPO
1 stop14h 35mBritish Airways
Deal found 11/6£551

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 13 6月 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

週六 28/6

13:30-16:00

Nonstop2h 30m

Belfast Intl

週三 2/7

15:25-06:50

2 stops15h 25m

£135

PortoBelfast

OPO - BFS

OPOBFS

Porto

週六 28/6

13:30-16:00

Nonstop2h 30m

Belfast Intl

週三 2/7

11:10-13:40

Nonstop2h 30m

£142

LisbonBelfast

LIS - BFS

LISBFS

Lisbon Humberto Delgado

週日 27/7

22:30-10:30

2 stops12h 00m

Belfast Intl

週日 3/8

16:20-23:20

2 stops31h 00m

£196

PortoBelfast

OPO - BHD

OPOBHD

Porto

週四 3/7

06:45-19:55

2 stops13h 10m

Belfast City

週三 9/7

11:00-19:40

2 stops32h 40m

£221

PortoBelfast

OPO - BHD

OPOBHD

Porto

週四 3/7

06:40-15:05

1 stop8h 25m

Belfast City

週三 9/7

07:05-18:50

1 stop11h 45m

£279

LisbonBelfast

LIS - BHD

LISBHD

Lisbon Humberto Delgado

週四 10/7

07:00-14:40

1 stop7h 40m

Belfast City

週四 17/7

09:40-19:25

1 stop9h 45m

£280

LisbonBelfast

LIS - BHD

LISBHD

Lisbon Humberto Delgado

週六 12/7

06:05-12:50

1 stop6h 45m

Belfast City

週六 12/7

18:00-22:05

2 stops28h 05m

£312

PortoBelfast

OPO - BHD

OPOBHD

Porto

週六 28/6

19:00-21:15

1 stop26h 15m

Belfast City

週三 2/7

17:25-10:40

1 stop17h 15m

£314

LisbonBelfast

LIS - BHD

LISBHD

Lisbon Humberto Delgado

週四 10/7

11:25-09:50

2 stops22h 25m

Belfast City

週四 17/7

16:55-21:35

2 stops28h 40m

£522

PortoBelfast

OPO - BHD

OPOBHD

Porto

週六 28/6

08:15-09:20

2 stops25h 05m

Belfast City

週三 2/7

18:30-09:05

1 stop14h 35m

£551

Flights are sorted by cheapest return flights first.

Deals found on 11/6

Showing 1-10 of 18 results
1
2

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, January is the cheapest month in which you can book a flight from Portugal to Northern Ireland (average of £67). Flying from Portugal 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.

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 13 6月 2025.

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

Rainfall in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Northern Ireland ranges from 50.0 - 90.0 inches per month. October is typically the wettest month, when rainfall can reach 90.0 mm. April is typically the driest time to visit Northern Ireland when rainfall is around 50.0 mm.

Temperature in Northern Ireland by month

Plan your trip to Northern Ireland by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Northern Ireland, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 16.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 5.0 C).

Reviews of airlines servicing Northern Ireland

Get insights into the airlines that provide service to Northern Ireland. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Northern Ireland. Reviews last updated 13 6月 2025.
KLM
7.8
Good
1,358 reviews
Check prices

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.8

Food

7.2

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
KLM
7.8
Good
1,358 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.8

Food

7.2

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Aer Lingus
7.1
Good
1,118 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.8

Food

7.2

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
easyJet
6.9
Okay
1,812 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.8

Food

7.2

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
British Airways
6.6
Okay
7,011 reviews
KLM
7.8
Good
1,358 reviews
Check prices

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.8

Food

7.2

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.
Ryanair
6.1
Okay
KLM
7.8
Good
1,358 reviews
Check prices

Boarding

7.8

Comfort

7.7

Entertainment

7.1

Overall

7.8

Food

7.2

Crew

8.4

Reviews

1 / 20
8.0
Excellent

Allan,Jun 2025

YYZ - AMS

I always enjoy flying KLM. Service is attentive, friendly and professional. The seat, when fully reclined is a little hard; some kind of mattress or topper would be helpful here. The dinner was really not very good …. “Meatless meatballs” tasted quite peculiar. Breakfast which consisted of an egg white omelette in flour tortilla was also rather tasteless.

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.

  • What are the cheapest airlines to fly from Portugal to Northern Ireland one-way?

    The cheapest airline one-way is KLM, with whom users have recently found tickets for as low as £77. However, be on the lookout for offers from easyJet and British Airways, 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, January is the cheapest month in which you can book a flight from Portugal to Northern Ireland (average of £67). Flying from Portugal 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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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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