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Cheap flights from Belfast City Airport to Portsmouth from £42

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 24/11. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LHR
15 Oct — 22 Oct1
1 adult
1 adult, Economy

Cheapflights Tip: The best prices from Belfast City to Portsmouth are usually found in February or March, booked 31 days in advance, depart on a Wednesday or Sunday and return on a Monday

Cheap flight deals from Belfast City to Portsmouth

Keep the following information in mind while searching for Belfast City to Portsmouth flight deals. Data was last updated 15 September 2025.

Round-trip from

£77

One-way from

£42

Popular in

July

Cheapest in

February

Average price

£104
Aer Lingus
  • Aer Lingus
  • 26/9-30/9
  • Nonstop
  • 3h 20m total
  • Belfast to Portsmouth
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easyJet
  • easyJet
  • 24/11
  • 1 total stop
  • 15h 05m total
  • Belfast to Portsmouth
Search Deals
Highest demand for flights based on searches. 25% potential increase in price (£28 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£5 potential savings vs. average return price).
Search Deals
Average for round-trip flights in September 2025
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Find flight deals from Belfast City to Portsmouth

Cheapest flights from Belfast City to Portsmouth
Explore the most affordable flight options available from Belfast City to Portsmouth. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 September 2025.

Fri 26/906:40BHD - SOU
Nonstop1h 45mAer Lingus
Tue 30/908:55SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 14/9£77
Fri 14/1106:40BHD - SOU
Nonstop1h 45mAer Lingus
Sun 16/1108:55SOU - BHD
Nonstop1h 40mAer Lingus
Deal found 15/9£80
Fri 10/1006:40BHD - SOU
Nonstop1h 45mAer Lingus
Sun 12/1008:55SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 14/9£81
Thu 9/1013:40BHD - SOU
Nonstop1h 35mAer Lingus
Mon 13/1013:10SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 14/9£88
Fri 28/1114:40BHD - SOU
Nonstop1h 35mAer Lingus
Fri 5/1216:45SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 13/9£102
Wed 17/906:40BHD - SOU
Nonstop1h 45mAer Lingus
Sun 21/908:55SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 15/9£106
Tue 16/906:40BHD - SOU
Nonstop1h 45mAer Lingus
Sun 21/908:55SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 15/9£114
Sat 20/906:40BHD - SOU
Nonstop1h 45mAer Lingus
Sun 21/908:55SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 15/9£121
Sun 28/1206:40BHD - SOU
Nonstop1h 45mAer Lingus
Tue 30/1219:00SOU - BHD
Nonstop1h 35mAer Lingus
Deal found 14/9£140

Cheapflights Fare Finder

 
Customise your flight search to find flights from Belfast City to Portsmouth 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 15 September 2025.
Use the filters below to find and compare flights from Belfast City Airport to Portsmouth that are best for you.

Fly from

Belfast City

Fly to

Portsmouth

Route

Depart

Return

Price

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 14/11

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Sun 16/11

08:55-10:35

Nonstop1h 40m

£80

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 10/10

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Sun 12/10

08:55-10:30

Nonstop1h 35m

£81

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Thu 9/10

13:40-15:15

Nonstop1h 35m

Southampton Eastleigh

Mon 13/10

13:10-14:45

Nonstop1h 35m

£88

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 28/11

14:40-16:15

Nonstop1h 35m

Southampton Eastleigh

Fri 5/12

16:45-18:20

Nonstop1h 35m

£102

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sun 28/12

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Tue 30/12

08:55-10:35

Nonstop1h 40m

£140

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 14/11

11:50-17:10

1 stop5h 20m

Southampton Eastleigh

Sun 16/11

08:55-10:35

Nonstop1h 40m

£143

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 24/10

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Sun 26/10

19:00-20:35

Nonstop1h 35m

£147

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 24/10

17:55-07:55

1 stop14h 00m

Southampton Eastleigh

Sun 26/10

19:00-20:35

Nonstop1h 35m

£158

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Mon 24/11

17:45-08:50

1 stop15h 05m

£42

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Wed 26/11

16:55-18:30

Nonstop1h 35m

£46

Flights are sorted by cheapest return flights first.

Deals found on 14/9

Showing 1-10 of 20 results
1
2

Best time to book a flight from Belfast City to Portsmouth

Have a flexible travel schedule? Discover the best time to fly to Portsmouth from Belfast City 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 Belfast City Airport to Portsmouth

How far ahead should I book a flight from Belfast City Airport to Portsmouth?

Use this chart to determine the optimal time to book a return flight from Belfast City to Portsmouth. Price data was last updated on 12 September 2025.

To ensure you get the cheapest price possible for a flight from Belfast City Airport to Portsmouth, you should look to book at least 31 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from Belfast City Airport to Portsmouth?

Currently, January is the cheapest month in which you can book a flight from Belfast City Airport to Portsmouth (average of £112). Flying from Belfast City Airport to Portsmouth in August is currently the most expensive (average of £164). 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 BHD to P0R?

Find hourly flight availability from Belfast City to Portsmouth. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 15 September 2025.

When flying from Belfast City Airport to Portsmouth, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

What is the cheapest day to fly from Belfast City Airport to Portsmouth?

Use this chart to determine the cheapest time to fly return from Belfast City to Portsmouth. Price data was last updated on 16 December 2024.

Travellers seeking maximum savings on their Belfast City Airport to Portsmouth flight should consider departing on Monday afternoons when fares are most often at their lowest. Monday at midday flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing Portsmouth

Get insights into the airlines that provide service to Portsmouth. 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 Portsmouth. Reviews last updated 15 September 2025.
Read through reviews of airlines operating flights from Belfast City Airport to Portsmouth, such as Aer Lingus. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Aer Lingus
7.2
Good
1,270 reviews
Check prices

Comfort

7.1

Crew

8.0

Entertainment

6.9

Food

6.5

Overall

7.2

Boarding

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.
Aer Lingus
7.2
Good
1,270 reviews
Aer Lingus
7.2
Good
1,270 reviews
Check prices

Comfort

7.1

Crew

8.0

Entertainment

6.9

Food

6.5

Overall

7.2

Boarding

7.3

Reviews

1 / 20
10.0
Excellent

Anonymous,Jul 2025

LHR - DUB

The lack of headphones impacted our ability to enjoy the entertainment system provided. The fact that my last connection was associated with an "affiliated airline" that did not allow me to retrieve a check in or a boarding pass via the app almost posed a significant issue as the last leg of the flight was overbooked and we were stressed about getting a seat as a result.

Related info for your journey

Find useful and relevant information for your journey from Belfast City to Portsmouth. 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 Belfast City Airport to Portsmouth?

    For as low as £80, Aer Lingus can have you in Portsmouth from Belfast City Airport in 1h 45m. Belfast City Airport and Portsmouth are separated by a distance of 316 mi. Most flights are nonstop.

  • What are the most reliable airlines from Belfast City Airport to Portsmouth?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Belfast City Airport to Portsmouth on time: Japan Airlines (80%), Iberia (78%), American Airlines (78%).

  • What are the cheapest flights from Belfast City Airport to Portsmouth?

    Looking at all options, your cheapest flight can be booked for £52. While the most popular route (Belfast City - Southampton Eastleigh) can be booked for £77 on average, our data indicates £1,247 when flying from Belfast City Airport to Portsmouth.

  • Can I find deals for flights from Belfast City to Portsmouth that include hotel bookings?

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

  • How can I find direct flights from Belfast City to Portsmouth?

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

  • Can I find deals for business class flights from Belfast City to Portsmouth?

    Yes. Cheapflights offers flight deals from Belfast City to Portsmouth 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 Belfast City Airport to Portsmouth?

    Currently, January is the cheapest month in which you can book a flight from Belfast City Airport to Portsmouth (average of £112). Flying from Belfast City Airport to Portsmouth in August is currently the most expensive (average of £164). 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

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Top 3 airlines flying from Belfast City to Portsmouth

Discover the top 3 airlines that operate flights from Belfast City to Portsmouth. 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 15 September 2025.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£29Average£92FlexibilityNo cancel feeOn-time86%
Search easyJet flights
Aer LingusCheapest£68Average£170FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus flights
British AirwaysCheapest£78Average£144FlexibilityNo cancel feeOn-time70%
Search British Airways 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 Belfast City to Portsmouth?

Cheapflights makes it easy to find Belfast City to Portsmouth flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

Why should you use Cheapflights to find cheap flight tickets from Belfast City to Portsmouth?

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

Can Cheapflights find flights from Belfast City to Portsmouth with no change fees?

Yes! Cheapflights helps users easily find flights from Belfast City to Portsmouth with no change fees.

Can Cheapflights notify me if prices for flights from Belfast City to Portsmouth become cheaper?

Yes, Cheapflights has a feature called Price Alert, which notifies users when flight prices change. Track prices for your flight to Portsmouth from Belfast City today and book when prices fit your budget.

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