Find flights
Deals
When to book
Airlines
FAQs

Cheap flights from Belfast City Airport to Portsmouth from £53

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 29/3. Fares are subject to change and may not be available on all flights or dates of travel.
BHD — LHR
6 Mar — 13 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 4 February 2026.

Fri 27/216:55
BHD
-
SOU
Nonstop1h 35m
Aer Lingus
Mon 2/319:00
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 2/2£115
Sat 19/906:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Sat 26/913:05
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 3/2£115
Fri 6/316:55
BHD
-
SOU
Nonstop1h 35m
Aer Lingus
Sun 8/319:00
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 2/2£116
Sat 25/406:40
BHD
-
SOU
Nonstop1h 45m
Aer Lingus
Sun 26/412:30
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 2/2£118
Sat 25/410:55
BHD
-
SOU
Nonstop1h 40m
Multiple Airlines
Sun 26/410:00
SOU
-
BHD
1 stop4h 55m
Multiple Airlines
Deal found 2/2£175
Fri 6/314:25
BHD
-
SOU
1 stop3h 05m
Multiple Airlines
Sun 8/319:00
SOU
-
BHD
Nonstop1h 35m
Multiple Airlines
Deal found 2/2£188
Fri 27/217:20
BHD
-
SOU
2 stops13h 25m
Multiple Airlines
Mon 2/319:00
SOU
-
BHD
Nonstop1h 35m
Multiple Airlines
Deal found 2/2£211
Fri 6/306:30
BHD
-
SOU
1 stop10h 30m
KLM
Sun 8/309:30
SOU
-
BHD
1 stop11h 30m
KLM
Deal found 2/2£214
Fri 13/210:10
BHD
-
SOU
Nonstop1h 40m
Aer Lingus
Mon 16/219:00
SOU
-
BHD
Nonstop1h 35m
Aer Lingus
Deal found 3/2£218
Mon 2/310:10
BHD
-
SOU
Nonstop1h 40m
British Airways
Tue 3/308:55
SOU
-
BHD
Nonstop1h 40m
British Airways
Deal found 3/2£229
Thu 9/714:40
BHD
-
SOU
Nonstop1h 35m
British Airways
Mon 13/708:55
SOU
-
BHD
Nonstop1h 40m
British Airways
Deal found 3/2£232

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 4 February 2026.

Round-trip from

£115

One-way from

£53

Popular in

July

Cheapest in

February

Average price

£85
Aer Lingus
  • Aer Lingus
  • 27/2-2/3
  • Nonstop
  • 3h 10m total
  • Belfast to Portsmouth
Search Deals
Aer Lingus
  • Aer Lingus
  • 29/3
  • Nonstop
  • 1h 45m total
  • Belfast to Portsmouth
Search Deals
Highest demand for flights based on searches. 24% potential increase in price (£31 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 7% potential price decrease (£7 potential savings vs. average return price).
Search Deals
Average for round-trip flights in February 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 4 February 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

Fri 27/2

16:55-18:30

Nonstop1h 35m

Southampton Eastleigh

Mon 2/3

19:00-20:35

Nonstop1h 35m

£115

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sat 25/4

06:40-08:25

Nonstop1h 45m

Southampton Eastleigh

Sun 26/4

12:30-14:05

Nonstop1h 35m

£118

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sat 25/4

10:55-12:35

Nonstop1h 40m

Southampton Eastleigh

Sun 26/4

10:00-14:55

1 stop4h 55m

£175

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 6/3

14:25-17:30

1 stop3h 05m

Southampton Eastleigh

Sun 8/3

19:00-20:35

Nonstop1h 35m

£188

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Fri 6/3

06:30-17:00

1 stop10h 30m

Southampton Eastleigh

Sun 8/3

09:30-21:00

1 stop11h 30m

£214

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Mon 2/3

16:55-18:30

Nonstop1h 35m

Southampton Eastleigh

Tue 3/3

12:15-13:50

Nonstop1h 35m

£229

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sun 5/7

14:40-16:15

Nonstop1h 35m

Southampton Eastleigh

Sun 12/7

08:55-10:35

Nonstop1h 40m

£290

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Thu 16/4

06:40-08:25

Nonstop1h 45m

£53

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Sun 29/3

09:50-12:25

1 stop26h 35m

£107

BelfastSouthampton

BHD - SOU

BHDSOU

Belfast City

Thu 16/4

16:00-08:40

2 stops16h 40m

£199

Flights are sorted by cheapest return flights first.

Deals found on 3/2

Showing 1-10 of 12 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 30 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 £68). 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 4 February 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 56% 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 31 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 4 February 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
1,445 reviews
Check prices

Boarding

7.4

Overall

7.2

Crew

8.0

Comfort

7.1

Entertainment

6.9

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.
Aer Lingus
7.2
Good
1,445 reviews
Aer Lingus
7.2
Good
1,445 reviews
Check prices

Boarding

7.4

Overall

7.2

Crew

8.0

Comfort

7.1

Entertainment

6.9

Food

6.6

Reviews

1 / 20
10.0
Excellent

Anonymous,Jan 2026

SFO - DUB

The boarding went smoothly, the crew were great and helped me with an extra pillow, the food was good including complementary wine with dinner (economy seating), and I was able to sleep. The flight arrived early which helped with connections. Overall a great experience.

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 £115, Aer Lingus can have you in Portsmouth from Belfast City Airport in 1h 35m. 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 (84%), Finnair (84%), Aer Lingus (84%).

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

    Looking at all options, your cheapest flight can be booked for £56. While the most popular route (Belfast City - Southampton Eastleigh) can be booked for £97 on average, our data indicates £1,650 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 £68). 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

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

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 4 February 2026.
AirlineCheapestAverageFlexibilityOn-time
easyJetCheapest£32Average£102FlexibilityNo cancel feeOn-time86%
Search easyJet flights
British AirwaysCheapest£82Average£150FlexibilityNo 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.

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.