Cheap Flights from London to Porto

The route from London to Porto covers about 1,298 km (807 miles). A nonstop flight, when scheduled, usually takes around 2h 15m gate to gate, although total trip time still depends on airport queues, transfer costs, and how early you need to arrive. This is a solid medium-length European route where a cheaper connection can look tempting until you factor in the extra travel time. If you only see one-stop options on your travel dates, connections through Amsterdam or Barcelona can widen the fare mix, but total journey time often stretches to 5 to 7 hours.

For many travelers, the cheapest time to fly from London to Porto is outside June to September and holiday weekends. January to March and mid-November usually give you a better chance of seeing lower fares, especially if you can depart on Tuesday or Wednesday and avoid the busiest Friday-to-Sunday patterns. Shoulder-season trips are often the sweet spot on this city-and-sea route: you still get a strong travel experience in Porto, but airlines are not dealing with the same pressure they see during bank holidays, school breaks, or sold-out weekend peaks.

For this route, compare a mix of budget and full-service carriers rather than assuming one airline always wins on value.

• Ryanair: often one of the lowest headline fares if you can travel light.
• Vueling: often useful on Spain, Italy, and France city-pair schedules.
• British Airways: best for higher-frequency business-heavy timings from the UK.
• TAP Air Portugal: frequently competitive on Portugal routes and well-timed European departures.
• easyJet: often competitive on short-haul European routes with solid schedule choice.

Porto skyline and city-break atmosphere for this route.

Headline round-trip fares on this route often start around EUR 63 to EUR 108 in quieter periods. A more typical booking window lands closer to EUR 163 to EUR 228, while peak travel dates can push pricing toward EUR 279 to EUR 389 or higher. Fare swings usually come from holiday demand, limited low-cost inventory, and whether you want the most convenient departure bank. On short-haul Europe trips, baggage, seat selection, and airport-transfer costs can change the real total more than many travelers expect, so always compare like-for-like fares.

On this route, airport choice can save money only if the ground transfer still makes sense for your trip. Start with Heathrow Airport on the London side and Porto Airport on the Porto side, then widen the search if the fare difference is meaningful.

Porto is ideal for food-focused weekends, river views, and Douro add-ons, and it often feels more compact and easiergoing than larger capital cities. If you are still planning the rest of the trip, see our Porto destination guide for more ideas before you book.

Airplane and route-planning visual for London to Porto.