Cheap flights from Portsmouth to Belfast from £37
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 21/3. Fares are subject to change and may not be available on all flights or dates of travel.
The best prices from Portsmouth to Belfast are usually found in September or January, booked 88 days in advance, depart on a Thursday or Tuesday and return on a Monday
Cheap flight deals from Portsmouth to Belfast
Keep the following information in mind while searching for Portsmouth to Belfast flight deals. Data was last updated 22 February 2025.
Find flight deals from Portsmouth to Belfast
Cheapest flights from Portsmouth to BelfastExplore the most affordable flight options available from Portsmouth to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.
Explore the most affordable flight options available from Portsmouth to Belfast. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 22 February 2025.
Find flights from Portsmouth to Belfast within your budget
Customise your flight search to find flights from Portsmouth to Belfast 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 22 February 2025.
Fly from
Fly to
Route
Depart
Return
Price
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Sun 13/4
12:00-13:20
Nonstop1h 20m
Belfast Intl
Sun 27/4
10:10-11:25
Nonstop1h 15m
SouthamptonBelfast
SOU - BHD
SOUBHD
Southampton Eastleigh
Mon 10/3
19:25-21:00
Nonstop1h 35m
Belfast City
Tue 18/3
06:40-08:25
Nonstop1h 45m
SouthamptonBelfast
SOU - BHD
SOUBHD
Southampton Eastleigh
Thu 27/3
08:55-10:35
Nonstop1h 40m
Belfast City
Mon 31/3
18:45-11:45
1 stop17h 00m
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Wed 12/3
16:10-17:30
Nonstop1h 20m
Belfast Intl
Wed 19/3
20:50-08:10
1 stop11h 20m
SouthamptonBelfast
SOU - BHD
SOUBHD
Southampton Eastleigh
Mon 28/7
11:05-10:10
1 stop23h 05m
Belfast City
Sun 3/8
18:05-10:35
1 stop16h 30m
SouthamptonBelfast
SOU - BHD
SOUBHD
Southampton Eastleigh
Wed 12/3
17:20-21:00
1 stop3h 40m
Belfast City
Wed 19/3
17:20-08:30
1 stop15h 10m
SouthamptonBelfast
SOU - BHD
SOUBHD
Southampton Eastleigh
Sat 8/3
15:10-16:50
Nonstop1h 40m
Belfast City
Sun 9/3
07:20-09:05
Nonstop1h 45m
SouthamptonBelfast
SOU - BFS
SOUBFS
Southampton Eastleigh
Fri 21/3
13:30-14:50
Nonstop1h 20m
SouthamptonBelfast
SOU - BHD
SOUBHD
Southampton Eastleigh
Thu 24/4
16:45-18:20
Nonstop1h 35m
SouthamptonBelfast
SOU - BHD
SOUBHD
Southampton Eastleigh
Fri 21/3
15:40-17:20
Nonstop1h 40m
Best time to book a flight from Portsmouth to Belfast
Have a flexible travel schedule? Discover the best time to fly to Belfast from Portsmouth with our price prediction graph.
Travel insights for flights from Portsmouth to Belfast
Get recent, data-driven insights about flights from Portsmouth to Belfast including ideal travel times, pricing trends, and more.
How far ahead should I book a flight from Portsmouth to Belfast?
Use this chart to determine the optimal time to book a return flight from Portsmouth to Belfast. Price data was last updated on 14 February 2025.
To ensure you get the cheapest price possible for a flight from Portsmouth to Belfast, you should look to book at least 88 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 Portsmouth to Belfast?
Currently, January is the cheapest month in which you can book a flight from Portsmouth to Belfast (average of £67). Flying from Portsmouth to Belfast 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 P0R to BFS?
Find hourly flight availability from Portsmouth to Belfast. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated 22 February 2025.
When flying from Portsmouth to Belfast, 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 Portsmouth to Belfast?
Use this chart to determine the cheapest time to fly return from Portsmouth to Belfast. Price data was last updated on 16 December 2024.
Travellers seeking maximum savings on their Portsmouth to Belfast flight should consider departing on Monday afternoons when fares are most often at their lowest. Tuesday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Rainfall in Belfast by month
Plan your trip to Belfast by taking into account the average rainfall totals by month.
In terms of precipitation, rainfall in Belfast 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 Belfast when rainfall is around 50.0 mm.
Temperature in Belfast by month
Plan your trip to Belfast by taking into account the average temperature totals by month.
If weather is an important factor for your trip to Belfast, 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 Belfast
Get insights into the airlines that provide service to Belfast. 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 Belfast. Reviews last updated 22 February 2025.
See what other customers who have flown with KLM, Aer Lingus and easyJet from Portsmouth to Belfast have to say. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Crew
Entertainment
Food
Boarding
Overall
Comfort
Reviews
Anonymous,Dec 2024
YWG - YYZ
Crew
Entertainment
Food
Boarding
Overall
Comfort
Reviews
Anonymous,Dec 2024
YWG - YYZ
Crew
Entertainment
Food
Boarding
Overall
Comfort
Reviews
Anonymous,Dec 2024
YWG - YYZ
Crew
Entertainment
Food
Boarding
Overall
Comfort
Reviews
Anonymous,Dec 2024
YWG - YYZ
Crew
Entertainment
Food
Boarding
Overall
Comfort
Reviews
Anonymous,Dec 2024
YWG - YYZ
Related info for your journey
Find useful and relevant information for your journey from Portsmouth to Belfast. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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.
Alternative routes for Portsmouth to Belfast
See prices for flight routes from nearby airports that may be better suited for you.
Top 6 airlines flying from Portsmouth to Belfast
Discover the top 6 airlines that operate flights from Portsmouth to Belfast. 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 22 February 2025.
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 Portsmouth to Belfast?
Cheapflights helps you search for flights from Portsmouth to Belfast via 900+ travel sites so you don’t have to. After performing a flight search, users can also filter their flight selection by filtering for price, number of stops, airlines, and so on.
Why should you use Cheapflights to find cheap flight tickets from Portsmouth to Belfast?
Cheapflights helps you find that perfect flight to Belfast from Portsmouth by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!
Can Cheapflights find flights from Portsmouth to Belfast with no change fees?
Users can book flights with no change fees policies with our dedicated filters. Book flights from Portsmouth to Belfast flexibly with Cheapflights today.
Can Cheapflights notify me if prices for flights from Portsmouth to Belfast become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!