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Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal. Return 1 adult Economy 0 bags Return 1 adult, Economy, 0 bags Search Search Save 28% or more on flights. Compare deals from all over the web. Never overpay with our price tracking tools. Filter searches by price, airline and more to find your best flights. Everything you should know Cheapest return fare €50 Ryanair Sun 20/9Wed 23/9 SNN - OPO • Direct View deals Cheapest one-way flight €21 Typical prices: €60-€122 Ryanair Sat 31/10 DUB - OPO • Direct View deals Top routes DUB Dublin-OPO Porto Cheapest SNN Shannon-OPO Porto Most popular Insights Insights Insights Insights When to book 3 weeks in advance Our data shows that travellers who book at least 3 weeks in advance save around 40% compared to booking last minute. Insights Insights Insights Insights When to travel February Cheapest • 27% price drop July Most popular Good to know Good to know +1 +1 Good to know Good to know +1 Start a new search KAYAK searches hundreds of sites at once to find you the best travel deals. We hope you love your trip to Porto! Select dates Flight Deals Booking Insights Flight Deals Cheap Flights to Porto  Here are some of the best deals found on KAYAK recently from the most popular airlines for return flights to Porto that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire. Discover the best prices for you by selecting your travel dates on KAYAK. Select dates Return One-way Last minute Direct All Flight Deals Recent return flight deals to Porto Sun, 20 Sep - Wed, 23 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect 22:55 - 01:10OPO  Porto-SNN Shannon 2h 15mdirect €50Ryanair Find Deal Sun, 27 Sep - Wed, 30 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect 22:55 - 01:10OPO  Porto-SNN Shannon 2h 15mdirect €50Ryanair Find Deal Mon, 28 Sep - Mon, 5 Oct 16:10 - 18:25SNN  Shannon-OPO Porto 2h 15mdirect 13:30 - 15:45OPO  Porto-SNN Shannon 2h 15mdirect €50Ryanair Find Deal Sun, 6 Sep - Sun, 13 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect 18:50 - 21:05OPO  Porto-SNN Shannon 2h 15mdirect €51Ryanair Find Deal Wed, 30 Sep - Mon, 5 Oct 20:10 - 22:25SNN  Shannon-OPO Porto 2h 15mdirect 13:30 - 15:45OPO  Porto-SNN Shannon 2h 15mdirect €53Ryanair Find Deal Mon, 28 Sep - Wed, 30 Sep 16:10 - 18:25SNN  Shannon-OPO Porto 2h 15mdirect 22:55 - 01:10OPO  Porto-SNN Shannon 2h 15mdirect €53Ryanair Find Deal Mon, 7 Sep - Mon, 14 Sep 22:05 - 09:00DUB  Dublin-OPO Porto 10h 55m1 stop London Stansted 22:25 - 00:50OPO  Porto-DUB Dublin 2h 25mdirect €70Ryanair Find Deal Mon, 7 Sep - Mon, 14 Sep 22:05 - 09:00DUB  Dublin-OPO Porto 10h 55m1 stop London Stansted 22:25 - 00:50OPO  Porto-DUB Dublin 2h 25mdirect €75Ryanair Find Deal Mon, 7 Sep - Mon, 14 Sep 15:55 - 09:00DUB  Dublin-OPO Porto 17h 05m2 stops Edinburgh Turnhouse London Stansted 22:25 - 00:50OPO  Porto-DUB Dublin 2h 25mdirect €92Multiple Airlines Find Deal Mon, 7 Sep - Mon, 14 Sep 15:55 - 09:00DUB  Dublin-OPO Porto 17h 05m2 stops Edinburgh Turnhouse London Stansted 22:25 - 00:50OPO  Porto-DUB Dublin 2h 25mdirect €95Multiple Airlines Find Deal Show more results Recent one-way flight deals to Porto Sat, 31 Oct 17:00 - 19:25DUB  Dublin-OPO Porto 2h 25mdirect €21Ryanair Find Deal Sun, 13 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect €25Ryanair Find Deal Wed, 7 Oct 20:10 - 22:25SNN  Shannon-OPO Porto 2h 15mdirect €25Ryanair Find Deal Mon, 12 Oct 16:10 - 18:25SNN  Shannon-OPO Porto 2h 15mdirect €25Ryanair Find Deal Sun, 11 Oct 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect €25Ryanair Find Deal Sun, 6 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect €26Ryanair Find Deal Sun, 11 Oct 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect €26Ryanair Find Deal Sat, 7 Nov 17:00 - 19:25DUB  Dublin-OPO Porto 2h 25mdirect €39Ryanair Find Deal Mon, 9 Nov 12:50 - 08:10DUB  Dublin-OPO Porto 19h 20m1 stop Barcelona-El Prat €47Vueling Find Deal Mon, 16 Nov 12:50 - 21:15DUB  Dublin-OPO Porto 8h 25m1 stop Barcelona-El Prat €55Vueling Find Deal Show more results Recent last minute flight deals to Porto Mon, 17 Aug - Fri, 21 Aug 17:00 - 07:30DUB  Dublin-OPO Porto 14h 30m1 stop Faro 18:40 - 00:15OPO  Porto-DUB Dublin 5h 35m1 stop Birmingham €211Ryanair Find Deal Tue, 18 Aug - Mon, 24 Aug 21:30 - 06:45DUB  Dublin-OPO Porto 9h 15m1 stop Madrid Barajas 19:10 - 13:00OPO  Porto-DUB Dublin 17h 50m1 stop Oslo Gardermoen €214Multiple Airlines Find Deal Tue, 18 Aug - Mon, 24 Aug 19:20 - 21:45DUB  Dublin-OPO Porto 2h 25mdirect 19:10 - 13:00OPO  Porto-DUB Dublin 17h 50m1 stop Oslo Gardermoen €218Multiple Airlines Find Deal Tue, 18 Aug - Wed, 19 Aug 21:30 - 06:45DUB  Dublin-OPO Porto 9h 15m1 stop Madrid Barajas 22:15 - 23:55OPO  Porto-DUB Dublin 25h 40m2 stops Faro Cardiff Wales €218Multiple Airlines Find Deal Mon, 17 Aug - Wed, 19 Aug 21:50 - 07:10DUB  Dublin-OPO Porto 9h 20m1 stop Barcelona-El Prat 22:15 - 23:55OPO  Porto-DUB Dublin 25h 40m2 stops Faro Cardiff Wales €228Multiple Airlines Find Deal Mon, 17 Aug - Fri, 21 Aug 06:20 - 07:30DUB  Dublin-OPO Porto 25h 10m2 stops Edinburgh Turnhouse Faro 18:40 - 00:15OPO  Porto-DUB Dublin 5h 35m1 stop Birmingham €231Ryanair Find Deal Tue, 18 Aug - Wed, 19 Aug 21:30 - 06:45DUB  Dublin-OPO Porto 9h 15m1 stop Madrid Barajas 22:30 - 08:10OPO  Porto-DUB Dublin 9h 40m1 stop Liverpool J. Lennon €231Ryanair Find Deal Mon, 17 Aug - Thu, 20 Aug 15:40 - 20:40DUB  Dublin-OPO Porto 5h 00m1 stop Manchester 17:35 - 23:55OPO  Porto-DUB Dublin 6h 20m1 stop Manchester €233Ryanair Find Deal Mon, 17 Aug - Wed, 19 Aug 21:50 - 07:10DUB  Dublin-OPO Porto 9h 20m1 stop Barcelona-El Prat 22:30 - 08:10OPO  Porto-DUB Dublin 9h 40m1 stop Liverpool J. Lennon €240Ryanair Find Deal Tue, 18 Aug - Wed, 19 Aug 19:20 - 21:45DUB  Dublin-OPO Porto 2h 25mdirect 22:30 - 08:10OPO  Porto-DUB Dublin 9h 40m1 stop Liverpool J. Lennon €243Ryanair Find Deal Show more results Recent direct flight deals from Ireland to Porto Sun, 20 Sep - Wed, 23 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect 22:55 - 01:10OPO  Porto-SNN Shannon 2h 15mdirect €50Ryanair Find Deal Sun, 27 Sep - Wed, 30 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect 22:55 - 01:10OPO  Porto-SNN Shannon 2h 15mdirect €50Ryanair Find Deal Mon, 28 Sep - Mon, 5 Oct 16:10 - 18:25SNN  Shannon-OPO Porto 2h 15mdirect 13:30 - 15:45OPO  Porto-SNN Shannon 2h 15mdirect €50Ryanair Find Deal Sun, 6 Sep - Sun, 13 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect 18:50 - 21:05OPO  Porto-SNN Shannon 2h 15mdirect €51Ryanair Find Deal Mon, 28 Sep - Wed, 30 Sep 16:10 - 18:25SNN  Shannon-OPO Porto 2h 15mdirect 22:55 - 01:10OPO  Porto-SNN Shannon 2h 15mdirect €53Ryanair Find Deal Wed, 30 Sep - Mon, 5 Oct 20:10 - 22:25SNN  Shannon-OPO Porto 2h 15mdirect 13:30 - 15:45OPO  Porto-SNN Shannon 2h 15mdirect €53Ryanair Find Deal Sat, 5 Dec - Mon, 7 Dec 17:00 - 19:25DUB  Dublin-OPO Porto 2h 25mdirect 21:00 - 23:25OPO  Porto-DUB Dublin 2h 25mdirect €77Ryanair Find Deal Sat, 7 Nov - Sun, 8 Nov 17:00 - 19:25DUB  Dublin-OPO Porto 2h 25mdirect 09:20 - 11:45OPO  Porto-DUB Dublin 2h 25mdirect €79Ryanair Find Deal Wed, 16 Sep - Fri, 18 Sep 20:45 - 23:10DUB  Dublin-OPO Porto 2h 25mdirect 21:45 - 00:10OPO  Porto-DUB Dublin 2h 25mdirect €81Ryanair Find Deal Mon, 21 Sep - Tue, 22 Sep 19:35 - 22:00DUB  Dublin-OPO Porto 2h 25mdirect 22:25 - 00:50OPO  Porto-DUB Dublin 2h 25mdirect €81Ryanair Find Deal Show more results All return flight deals to Porto Sun, 20 Sep - Wed, 23 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect 22:55 - 01:10OPO  Porto-SNN Shannon 2h 15mdirect €50Ryanair Find Deal Sun, 27 Sep - Wed, 30 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect 22:55 - 01:10OPO  Porto-SNN Shannon 2h 15mdirect €50Ryanair Find Deal Mon, 28 Sep - Mon, 5 Oct 16:10 - 18:25SNN  Shannon-OPO Porto 2h 15mdirect 13:30 - 15:45OPO  Porto-SNN Shannon 2h 15mdirect €50Ryanair Find Deal Sun, 6 Sep - Sun, 13 Sep 21:30 - 23:45SNN  Shannon-OPO Porto 2h 15mdirect 18:50 - 21:05OPO  Porto-SNN Shannon 2h 15mdirect €51Ryanair Find Deal Wed, 30 Sep - Mon, 5 Oct 20:10 - 22:25SNN  Shannon-OPO Porto 2h 15mdirect 13:30 - 15:45OPO  Porto-SNN Shannon 2h 15mdirect €53Ryanair Find Deal Mon, 28 Sep - Wed, 30 Sep 16:10 - 18:25SNN  Shannon-OPO Porto 2h 15mdirect 22:55 - 01:10OPO  Porto-SNN Shannon 2h 15mdirect €53Ryanair Find Deal Mon, 7 Sep - Mon, 14 Sep 22:05 - 09:00DUB  Dublin-OPO Porto 10h 55m1 stop London Stansted 22:25 - 00:50OPO  Porto-DUB Dublin 2h 25mdirect €70Ryanair Find Deal Mon, 7 Sep - Mon, 14 Sep 22:05 - 09:00DUB  Dublin-OPO Porto 10h 55m1 stop London Stansted 22:25 - 00:50OPO  Porto-DUB Dublin 2h 25mdirect €75Ryanair Find Deal Mon, 7 Sep - Mon, 14 Sep 15:55 - 09:00DUB  Dublin-OPO Porto 17h 05m2 stops Edinburgh Turnhouse London Stansted 22:25 - 00:50OPO  Porto-DUB Dublin 2h 25mdirect €92Multiple Airlines Find Deal Mon, 7 Sep - Mon, 14 Sep 15:55 - 09:00DUB  Dublin-OPO Porto 17h 05m2 stops Edinburgh Turnhouse London Stansted 22:25 - 00:50OPO  Porto-DUB Dublin 2h 25mdirect €95Multiple Airlines Find Deal Show more results Booking Insights KAYAK's insights & trends for flights to Porto Get data-powered insights and trends into flights to Porto to help you find the cheapest flights, the best time to fly and much more. Prices More What is the cheapest flight to Porto? These are the best return prices found by users searching on KAYAK in the last 5 days. In the last 5 days, the cheapest flight deal to Porto was found on the route from Dublin, at €50 return. The most popular connection is from Shannon to Porto, while KAYAK users have found return deals for as low as €50 in the last 5 days. How much is a flight to Porto? The aver…