The cheapest places to fly from the UK are consistently European cities served by ultra-low-cost carriers like Ryanair, easyJet, and Wizz Air, with Milan, Italy and Dublin, Ireland often topping the list. In 2026, data from major aggregators like Skyscanner shows that return flights to destinations like Venice, Madrid, and Prague can be found for as little as £30–£45 if booked mid-week or during off-peak months like February and October. For those looking for warmer climates, Agadir, Morocco and Faro, Portugal frequently offer sub-£60 return deals from London hubs like Stansted and Luton. Eastern European hubs like Bucharest, Romania and Tirana, Albania have also become incredibly affordable due to increased competition. Domestically, flights between London and Edinburgh or Belfast are often very cheap, sometimes costing less than a standard train fare. The key to finding these prices is flexibility with the "Everywhere" search feature and avoiding the peak summer holiday and Christmas windows.