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 4/10. Fares are subject to change and may not be available on all flights or dates of travel.
LHR — BHD
26 Sep — 3 Oct1
Return
1 adult
Economy
Return
1 adult, Economy, 0 bags
Cheapflights Tip: The best prices from Portsmouth to Belfast are usually found in September or October, booked 55 days in advance, depart on a Tuesday or Thursday and return on a Tuesday
Cheap flight deals from Portsmouth to Belfast
Enter your travel dates to find the best prices.
Cheapest
Best
Direct
Last-minute
One-way
Cheapest flights from Portsmouth to Belfast
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 27 August 2026.
Sun 4/1012:35 -
Nonstop1h 15m
Sun 11/1010:50 -
Nonstop1h 15m
Deal found 26/8£41
Sun 18/1012:35 -
Nonstop1h 15m
Sat 24/1010:30 -
Nonstop1h 15m
Deal found 25/8£42
Sun 4/1012:35 -
Nonstop1h 15m
Mon 5/1010:35 -
Nonstop1h 15m
Deal found 26/8£43
Sat 10/1012:15 -
Nonstop1h 15m
Sat 17/1010:30 -
Nonstop1h 15m
Deal found 26/8£49
Sat 19/912:15 -
Nonstop1h 15m
Sat 3/1010:30 -
Nonstop1h 15m
Deal found 22/8£54
Sun 27/912:35 -
Nonstop1h 15m
Mon 28/910:35 -
Nonstop1h 15m
Deal found 25/8£56
Sat 19/912:15 -
Nonstop1h 15m
Sat 26/910:30 -
Nonstop1h 15m
Deal found 22/8£62
Mon 21/912:25 -
Nonstop1h 15m
Mon 5/1010:35 -
Nonstop1h 15m
Deal found 24/8£68
Thu 1/1011:40 -
1 stop9h 30m
Mon 5/1010:35 -
Nonstop1h 15m
Deal found 23/8£69
Fri 4/912:20 -
Nonstop1h 15m
Sun 6/910:50 -
Nonstop1h 15m
Deal found 24/8£70
Mon 21/912:25 -
Nonstop1h 15m
Mon 28/910:35 -
Nonstop1h 15m
Deal found 24/8£73
Sun 4/1012:35 -
Nonstop1h 15m
Mon 12/1006:40 -
1 stop5h 45m
Deal found 23/8£77
Best flights from Portsmouth to Belfast
Discover carefully curated flight deals from Portsmouth to Belfast that have cost, travel time, and stopovers in mind to ensure you get the best travel experience. Data last updated 27 August 2026.
Sun 4/1012:35 -
Nonstop1h 15m
Sun 11/1010:50 -
Nonstop1h 15m
Deal found 26/8£41
Sun 4/1012:35 -
Nonstop1h 15m
Mon 12/1010:35 -
Nonstop1h 15m
Deal found 23/8£41
Sat 17/1012:15 -
Nonstop1h 15m
Sun 18/1010:50 -
Nonstop1h 15m
Deal found 25/8£41
Sun 18/1012:35 -
Nonstop1h 15m
Sat 24/1010:30 -
Nonstop1h 15m
Deal found 25/8£42
Sat 19/912:15 -
Nonstop1h 15m
Sat 3/1010:30 -
Nonstop1h 15m
Deal found 22/8£54
Mon 21/912:25 -
Nonstop1h 15m
Mon 5/1010:35 -
Nonstop1h 15m
Deal found 24/8£68
Mon 21/912:35 -
Nonstop1h 35m
Mon 5/1010:25 -
Nonstop1h 40m
Deal found 24/8£234
Tue 27/1009:20 -
2 stops9h 45m
Thu 29/1007:00 -
2 stops12h 30m
Deal found 23/8£260
Wed 23/919:30 -
Nonstop1h 35m
Wed 30/917:25 -
Nonstop1h 35m
Deal found 26/8£234
Fri 15/119:40 -
Nonstop1h 35m
Wed 20/117:25 -
Nonstop1h 35m
Deal found 22/8£234
Wed 23/912:35 -
Nonstop1h 35m
Wed 7/1006:40 -
Nonstop1h 45m
Deal found 26/8£234
Tue 22/912:35 -
Nonstop1h 35m
Tue 29/917:25 -
Nonstop1h 35m
Deal found 25/8£234
Tue 13/1019:30 -
Nonstop1h 35m
Sat 17/1006:40 -
Nonstop1h 45m
Deal found 25/8£234
Tue 22/919:30 -
Nonstop1h 35m
Tue 6/1012:40 -
1 stop6h 45m
Deal found 25/8£364
Fri 23/1008:55 -
Nonstop1h 40m
Sun 25/1018:35 -
1 stop13h 50m
Deal found 26/8£364
Direct flights from Portsmouth to Belfast
Explore direct flight options from Portsmouth to Belfast based on user searches, and compare prices and availability for your desired travel dates. Data last updated 27 August 2026.
Sun 4/1012:35 -
Nonstop1h 15m
Sun 11/1010:50 -
Nonstop1h 15m
Deal found 26/8£41
Sun 18/1012:35 -
Nonstop1h 15m
Sat 24/1010:30 -
Nonstop1h 15m
Deal found 25/8£42
Sun 4/1012:35 -
Nonstop1h 15m
Mon 5/1010:35 -
Nonstop1h 15m
Deal found 26/8£43
Sat 10/1012:15 -
Nonstop1h 15m
Sat 17/1010:30 -
Nonstop1h 15m
Deal found 26/8£49
Sat 19/912:15 -
Nonstop1h 15m
Sat 3/1010:30 -
Nonstop1h 15m
Deal found 22/8£54
Sun 27/912:35 -
Nonstop1h 15m
Mon 28/910:35 -
Nonstop1h 15m
Deal found 25/8£56
Sat 19/912:15 -
Nonstop1h 15m
Sat 26/910:30 -
Nonstop1h 15m
Deal found 22/8£62
Mon 21/912:25 -
Nonstop1h 15m
Mon 5/1010:35 -
Nonstop1h 15m
Deal found 24/8£68
Mon 21/912:25 -
Nonstop1h 15m
Mon 28/910:35 -
Nonstop1h 15m
Deal found 24/8£73
Sat 5/908:55 -
Nonstop1h 40m
Sat 5/917:30 -
Nonstop1h 40m
Deal found 23/8£77
Fri 2/1012:20 -
Nonstop1h 15m
Sat 3/1010:30 -
Nonstop1h 15m
Deal found 22/8£79
Thu 8/1012:35 -
Nonstop1h 35m
Thu 15/1017:25 -
Nonstop1h 35m
Deal found 24/8£82
Last-minute flights from Portsmouth to Belfast
Discover last-minute flight deals from Portsmouth to Belfast. Data last updated 27 August 2026 and is based on user searches.
Thu 3/908:55 -
Nonstop1h 40m
Mon 7/906:40 -
Nonstop1h 45m
Deal found 23/8£79
Fri 4/912:20 -
Nonstop1h 15m
Sun 6/910:50 -
Nonstop1h 15m
Deal found 24/8£70
Fri 4/912:20 -
Nonstop1h 15m
Mon 7/910:35 -
Nonstop1h 15m
Deal found 22/8£82
Sat 5/908:55 -
Nonstop1h 40m
Sat 5/917:30 -
Nonstop1h 40m
Deal found 23/8£77
Tue 15/908:55 -
Nonstop1h 40m
Tue 22/910:25 -
Nonstop1h 40m
Deal found 23/8£84
Sat 19/912:15 -
Nonstop1h 15m
Sat 3/1010:30 -
Nonstop1h 15m
Deal found 22/8£54
Sat 19/912:15 -
Nonstop1h 15m
Sat 26/910:30 -
Nonstop1h 15m
Deal found 22/8£62
Mon 21/912:25 -
Nonstop1h 15m
Mon 5/1010:35 -
Nonstop1h 15m
Deal found 24/8£68
Mon 21/912:25 -
Nonstop1h 15m
Mon 28/910:35 -
Nonstop1h 15m
Deal found 24/8£73
Mon 21/919:30 -
Nonstop1h 35m
Mon 28/906:40 -
Nonstop1h 45m
Deal found 24/8£84
Wed 23/919:30 -
Nonstop1h 35m
Wed 30/910:25 -
Nonstop1h 40m
Deal found 26/8£85
Sun 27/912:35 -
Nonstop1h 15m
Mon 28/910:35 -
Nonstop1h 15m
Deal found 25/8£56
One-way flights from Portsmouth to Belfast
Search for one-way flight options from Portsmouth to Belfast. Find affordable one-way fares based on user searches. Data last updated 27 August 2026.
Sun 4/1012:35 -
Nonstop1h 15m
Deal found 25/8£22
Mon 28/912:25 -
Nonstop1h 15m
Deal found 25/8£27
Sat 10/1012:15 -
Nonstop1h 15m
Deal found 26/8£35
Wed 2/1219:40 -
Nonstop1h 35m
Deal found 24/8£35
Wed 2/908:55 -
Nonstop1h 40m
Deal found 25/8£38
Sat 3/1007:50 -
1 stop25h 30m
Deal found 24/8£43
Mon 28/908:55 -
Nonstop1h 40m
Deal found 25/8£43
Thu 8/1012:35 -
Nonstop1h 35m
Deal found 24/8£45
Wed 7/1010:45 -
1 stop8h 55m
Deal found 23/8£46
Thu 8/1011:40 -
1 stop4h 15m
Deal found 24/8£47
Fri 9/1012:20 -
Nonstop1h 15m
Deal found 24/8£49
Mon 31/812:25 -
Nonstop1h 15m
Deal found 23/8£51
Find flight deals from Portsmouth to Belfast
Keep the following information in mind while searching for Portsmouth to Belfast flight deals. Data was last updated 27 August 2026.
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 7,457,451 searches. Data last updated 27 August 2026.
Use the filters below to find and compare flights from Portsmouth to Belfast that are best for you.
Fly from
Fly to
Route
Depart
Return
Price
Cheapest return flight
Fastest return journey
SouthamptonBelfast
SOU Southampton Eastleigh - BFS Belfast Intl
SOUBFS
Southampton Eastleigh
Sun 4/10
12:35-13:50
Nonstop1h 15m
Belfast Intl
Sun 11/10
10:50-12:05
Nonstop1h 15m
£41
SouthamptonBelfast
SOU Southampton Eastleigh - BFS Belfast Intl
SOUBFS
Southampton Eastleigh
Sun 4/10
12:35-13:50
Nonstop1h 15m
Belfast Intl
Mon 12/10
10:35-11:50
Nonstop1h 15m
£41
SouthamptonBelfast
SOU Southampton Eastleigh - BFS Belfast Intl
SOUBFS
Southampton Eastleigh
Sat 17/10
12:15-13:30
Nonstop1h 15m
Belfast Intl
Sun 18/10
10:50-12:05
Nonstop1h 15m
£41
SouthamptonBelfast
SOU Southampton Eastleigh - BFS Belfast Intl
SOUBFS
Southampton Eastleigh
Sun 18/10
12:35-13:50
Nonstop1h 15m
Belfast Intl
Sat 24/10
10:30-11:45
Nonstop1h 15m
£42
SouthamptonBelfast
SOU Southampton Eastleigh - BFS Belfast Intl
SOUBFS
Southampton Eastleigh
Sat 19/9
12:15-13:30
Nonstop1h 15m
Belfast Intl
Sat 3/10
10:30-11:45
Nonstop1h 15m
£54
SouthamptonBelfast
SOU Southampton Eastleigh - BFS Belfast Intl
SOUBFS
Southampton Eastleigh
Mon 21/9
12:25-13:40
Nonstop1h 15m
Belfast Intl
Mon 5/10
10:35-11:50
Nonstop1h 15m
£68
SouthamptonBelfast
SOU Southampton Eastleigh - BHD Belfast City
SOUBHD
Southampton Eastleigh
Mon 21/9
12:35-14:10
Nonstop1h 35m
Belfast City
Mon 5/10
10:25-12:05
Nonstop1h 40m
£234
SouthamptonBelfast
SOU Southampton Eastleigh - BHD Belfast City
SOUBHD
Southampton Eastleigh
Wed 23/9
19:30-21:05
Nonstop1h 35m
Belfast City
Wed 30/9
17:25-19:00
Nonstop1h 35m
£234
SouthamptonBelfast
SOU Southampton Eastleigh - BHD Belfast City
SOUBHD
Southampton Eastleigh
Fri 15/1
19:40-21:15
Nonstop1h 35m
Belfast City
Wed 20/1
17:25-19:00
Nonstop1h 35m
£234
SouthamptonBelfast
SOU Southampton Eastleigh - BHD Belfast City
SOUBHD
Southampton Eastleigh
Wed 23/9
12:35-14:10
Nonstop1h 35m
Belfast City
Wed 7/10
06:40-08:25
Nonstop1h 45m
£234
Flights are sorted by cheapest return flights first.
Deals found on 25/8
Showing 1-10 of 32 resultsSorted by cheapest first
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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.
SOU-BFS
SOU-BHD
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 Portsmouth to Belfast
P0R-BF1
SOU-BFS
SOU-BHD
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 27 August 2026.
One of the essential ways to save on airfare from Portsmouth to Belfast is to remain as flexible as possible. Flights that are at midday tend to be the most expensive. A flight in the morning could potentially save you up to 40% on airfare.
How much does it cost for a return flight from Portsmouth to Belfast?
Airfare is below average for this route at the moment.
Portsmouth to Belfast flights typically cost between £65 and £93 in October.The cheapest return price found within the last 5 days was £41 on easyJet (4 Oct–11 Oct).
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 22 August 2026.
Travellers seeking maximum savings on their Portsmouth to Belfast flight should consider departing on Wednesday at midday 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 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 27 August 2026.
See what other customers who have flown with Aer Lingus and easyJet from Portsmouth to Belfast have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
Great experience. Crew was friendly, food was better than what I have experienced with some other airlines and seat pitch was adequate. I would fly Aer Lingus again.
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.
How long is the flight from Portsmouth to Belfast?
easyJet and British Airways can get you from Portsmouth to Belfast in just under 1h 15m. Your travel time will be generally consistent. There are 326 mi between Portsmouth and Belfast. All flights are typically direct.
Can I find deals for flights from Portsmouth to Belfast that include hotel bookings?
Yes. In addition to deals on Portsmouth to Belfast flights, Cheapflights offers holiday packages that include both flights and hotel.
How can I find direct flights from Portsmouth to Belfast?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Portsmouth to Belfast.
Can I find deals for business class flights from Portsmouth to Belfast?
Yes. Cheapflights offers flight deals from Portsmouth to Belfast by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.
Discover the top 5 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 7,457,451 searches. Data last updated 27 August 2026.
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!
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