Cheap Flights to Portsmouth

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Flight deals to Portsmouth

Looking for a cheap last-minute deal or the best return flight to Portsmouth? Find our lowest prices on one-way and return tickets to the easiest airport right here.

Flying to Portsmouth

The things to know before you go.
Fly intoTri-State Airport
Distance to Portsmouth55.9 km
Cheapest flight found776 €
Cheapest month to flyApril

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Frequently asked questions

Currently, there are no airlines that fly direct to Portsmouth. But we found flights with one or more stops from 776 €.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to Portsmouth but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
No airlines currently offer direct flights between Ireland and Portsmouth. Most routes have one or more stops.
The best price we found for a return flight to Portsmouth is 776 €. This is an estimate based on information collected from different airlines and travel providers flying to Tri-State Airport over the last 4 days and is subject to change and availability.
The cheapest airport near Portsmouth is Tri-State – which is 55.9 km away from the centre of Portsmouth. We've found flights into this airport from 776 €.
After crunching the numbers on our flight calendar, we found that the cheapest date to fly to Tri-State Airport, the closest airport to Portsmouth is Wednesday, 29 April 2026.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to Portsmouth is around 40 days in advance, so don’t leave your flight to the last minute.
Tri-State Airport is the best option, and is around 55.9km from Portsmouth.
The average temperature in Portsmouth in April is around 12°C. The warmest month in Portsmouth is typically July, which averages 30°C. The coolest month is January, with temperatures averaging -5°C. The rainiest month is May, and it usually rains the least in October.
Currently, the cheapest airline that flies to Tri-State Airport - the closest airport to Portsmouth - Ryanair.
Tri-State Airport is 55.9km from Portsmouth which is approximately 58 minutes driving time. Check out the options for car hire at Tri-State Airport.