Cheap flights from Southampton to Madrid

Book earlier rather than later when you start from a single-airport city: seats that connect onward are limited, and what is left close to departure rarely comes cheap. Fares bottom out in February, and the price calendar only runs from October through July, so anything outside those months is not listed yet. School holidays and the weeks around Christmas tend to push prices up, while a midweek departure often costs less than a Friday one if your dates can move.

Every itinerary on this route contains one stop, and the carrier you choose decides where you change and how much waiting that adds. Easyjet is the low-cost name here: its base fare covers little, so hold bags and seat selection are extras you add yourself. KLM Royal Dutch Airlines and Aer Lingus work as the full-service options, with cabin baggage normally included in the fare. Emerald Airlines and Loganair Limited operate the shorter first sectors out of Southampton, feeding you toward the connection. Compare what each ticket includes before you judge the headline price.

You land at Barajas, the airport serving Madrid, and it sits well outside the centre, so plan on public transport rather than a stroll into town. The metro runs from within the airport complex and drops you in central Madrid in one ride, while airport buses and taxis cover the same ground at street level. Give your first hour some slack: the site is large and spread out, gate-to-baggage walks are long, and passport control for arrivals from the United Kingdom adds its own queue. If someone is meeting you, agree on a terminal beforehand, because pickup points differ between them.

Currency

EUR (€)

Power sockets

Type C, F · 230 V

Language

Spanish

Emergency number

112, 061, 091

Driving side

right

Calling code

+34

Internet domain

.es

EU / Schengen

EU member, Schengen area

Population of Madrid

3.5 M (2025)

Time zone

UTC+02 (Europe/Madrid)

Country facts: Wikidata

• Check whether your connection is sold as one ticket or two, because on separate tickets you re-check your bag and get no protection if the first flight runs late.
• Leave a generous buffer at the stopover airport, since a short change collapses with one delay.
• If you fly Easyjet, price the hold bag and seat choice into the total before comparing it with Aer Lingus or KLM Royal Dutch Airlines, where cabin baggage comes as standard.
• Make sure your passport meets the validity rules Spain sets for visitors from the United Kingdom.
• Scan fares from October through July first, since February tends to come out lowest and months outside that range are not priced yet.