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Cheap flights from Belfast City Airport to Portsmouth from £65

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 24/6. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LHR
28 Feb — 7 Mar1
1 adult
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Belfast City to Portsmouth are usually found in February or March, booked 54 days in advance, depart on a Sunday or Wednesday and return on a Monday

Cheap flight deals from Belfast City to Portsmouth

Enter your travel dates to find the best prices.

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 29 January 2026.

Wed 4/206:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Wed 11/212:15
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 28/1£93
Thu 12/310:10
BHD
-
SOU
Nonstop1h 40m
Aer Lingus
Sun 15/312:20
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 27/1£102
Tue 10/206:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Tue 17/208:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 28/1£106
Thu 26/210:10
BHD
-
SOU
Nonstop1h 40m
Aer Lingus
Thu 5/319:00
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 27/1£112
Fri 22/506:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Wed 27/513:05
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 28/1£114
Fri 13/316:55
BHD
-
SOU
Nonstop1h 35m
Aer Lingus
Sun 15/312:20
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 28/1£116
Thu 15/1014:40
BHD
-
SOU
Nonstop1h 35m
Aer Lingus
Sun 18/1008:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 28/1£118
Wed 25/210:10
BHD
-
SOU
Nonstop1h 35m
Multiple Airlines
Wed 4/309:25
SOU
-
BHD
1 stop7h 50m
Multiple Airlines
Deal found 28/1£122
Sun 21/606:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Fri 26/616:45
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 28/1£128
Fri 12/610:55
BHD
-
SOU
Nonstop1h 40m
Aer Lingus
Sun 14/612:30
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 28/1£133
Fri 19/606:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Sun 21/608:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 28/1£134
Sun 8/210:10
BHD
-
SOU
Nonstop1h 40m
Aer Lingus
Tue 17/208:55
SOU
-
BHD
Nonstop1h 40m
Aer Lingus
Deal found 28/1£135

Find 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 29 January 2026.

Round-trip from

£93

One-way from

£65

Popular in

July

Cheapest in

February

Average price

£136
Aer Lingus
  • Aer Lingus
  • 17/2-21/2
  • Nonstop
  • 3h 25m total
  • Belfast to Portsmouth
Search Deals
Aer Lingus
  • Aer Lingus
  • 24/6
  • Nonstop
  • 1h 45m total
  • Belfast to Portsmouth
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£30 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease (£6 potential savings vs. average return price).
Search Deals
Average for round-trip flights in January 2026
Search Deals

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 29 January 2026.
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

Thu 26/2

10:10-11:50

Nonstop1h 40m

Southampton Eastleigh

Thu 5/3

19:00-20:35

Nonstop1h 35m

£112

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 22/5

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Wed 27/5

13:05-14:40

Nonstop1h 35m

£114

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sun 21/6

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Fri 26/6

16:45-18:20

Nonstop1h 35m

£128

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Thu 23/7

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Sat 25/7

13:05-14:40

Nonstop1h 35m

£143

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 12/6

15:00-07:20

1 stop16h 20m

Southampton Eastleigh

Sun 14/6

18:20-11:55

1 stop17h 35m

£160

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Thu 12/3

11:00-19:40

2 stops8h 40m

Southampton Eastleigh

Sun 15/3

12:20-13:55

Nonstop1h 35m

£162

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 13/3

08:20-17:10

1 stop8h 50m

Southampton Eastleigh

Sun 15/3

12:20-13:55

Nonstop1h 35m

£181

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sat 27/6

17:30-19:10

Nonstop1h 40m

Southampton Eastleigh

Sat 4/7

07:50-11:30

1 stop3h 40m

£183

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 13/3

06:30-17:00

1 stop10h 30m

Southampton Eastleigh

Sun 15/3

09:30-16:50

1 stop7h 20m

£186

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sun 22/2

10:10-11:50

Nonstop1h 40m

Southampton Eastleigh

Mon 23/2

19:00-20:35

Nonstop1h 35m

£194

Flights are sorted by cheapest return flights first.

Deals found on 28/1

Showing 1-10 of 18 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 23 January 2026.

To ensure you get the cheapest price possible for a flight from Belfast City Airport to Portsmouth, you should look to book at least 54 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 £29). Flying from Belfast City Airport to Portsmouth in August is currently the most expensive (average of £67). 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 29 January 2026.

When flying from Belfast City Airport to Portsmouth, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 55% versus a flight in the afternoon.

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 24 January 2026.

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. Friday 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 29 January 2026.
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
1,443 reviews
Check prices

Food

6.6

Overall

7.2

Boarding

7.4

Crew

8.0

Entertainment

6.9

Comfort

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Dec 2025

MAN - DUB

They did not list a gate until it was time to board.
Aer Lingus
7.2
Good
1,443 reviews
Aer Lingus
7.2
Good
1,443 reviews
Check prices

Food

6.6

Overall

7.2

Boarding

7.4

Crew

8.0

Entertainment

6.9

Comfort

7.1

Reviews

1 / 20
6.0
Good

Anonymous,Dec 2025

MAN - DUB

They did not list a gate until it was time to board.

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 £112, Aer Lingus can have you in Portsmouth from Belfast City Airport in 1h 40m. Belfast City Airport and Portsmouth are separated by a distance of 316 mi. When browsing for deals, the options you’ll see will be for both direct flights and flights with stops.

  • 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: Qatar Airways (86%), American Airlines (85%), British Airways (85%).

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

    Looking at all options, your cheapest flight can be booked for £55. While the most popular route (Belfast City - Southampton Eastleigh) can be booked for £93 on average, our data indicates £1,569 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 £29). Flying from Belfast City Airport to Portsmouth in August is currently the most expensive (average of £67). 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 29 January 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£31Average£100FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£81Average£148FlexibilityNo cancel feeOn-time70%
Search British Airways flights
Aer LingusCheapest£83Average£163FlexibilityNo cancel feeOn-timeN/A
Search Aer Lingus 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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