is by far the best month, wherein you can get cheapest flights for Lisbon to Porto. Meanwhile, is perceived as the expensive month due to the varying factors. That’s why it’s highly advised to make advanced online flight booking to save huge amounts of money.
Disclaimer - All the mentioned fares were found within last 48 hrs. The displayed fares are based on historical data and are subject to change. The fares cannot be guaranteed at the time of booking.

London
06:00
London Heathrow Airport [LHR]
Sun , 17 May 2026

Lisbon
08:50
Humberto Delgado Airport [LIS]
Sun, 17 May 2026

Copenhagen
06:00
Copenhagen Kastrup Airport [CPH]
Sun , 17 May 2026

Porto
17:00
Francisco Sa Carneiro Airport [OPO]
Sun, 17 May 2026

Manchester
10:55
Manchester Airport [MAN]
Sun , 17 May 2026

Fiumicino
00:15
Fiumicino Leonardo Da Vinci International Airport [FCO]
Mon, 18 May 2026

Prague
19:30
Vaclav Havel Airport Prague [PRG]
Sun , 17 May 2026

Funchal
01:25
Madeira Airport [FNC]
Mon, 18 May 2026

Miami
16:30
Miami International Airport [MIA]
Sun , 17 May 2026

London
10:20
London Heathrow Airport [LHR]
Mon, 18 May 2026

London
10:35
London Gatwick Airport [LGW]
Sun , 17 May 2026

Tel aviv
04:05
Ben Gurion International Airport [TLV]
Mon, 18 May 2026

London
16:35
London Heathrow Airport [LHR]
Sun , 17 May 2026

Tel aviv
04:05
Ben Gurion International Airport [TLV]
Mon, 18 May 2026

Istanbul
12:45
Istanbul Airport [IST]
Sun , 17 May 2026

Newark
21:10
Newark Liberty International Airport [EWR]
Sun, 17 May 2026

Istanbul
12:45
Istanbul Airport [IST]
Sun , 17 May 2026

Newark
21:00
Newark Liberty International Airport [EWR]
Sun, 17 May 2026

Bangkok
09:30
Suvarnabhumi Airport [BKK]
Sun , 17 May 2026

Lisbon
19:40
Humberto Delgado Airport [LIS]
Sun, 17 May 2026

Bangkok
09:30
Suvarnabhumi Airport [BKK]
Sun , 17 May 2026

Funchal
00:10
Madeira Airport [FNC]
Mon, 18 May 2026