Missing a "self-transfer" (or "self-connecting") flight is a significantly more stressful and expensive ordeal than missing a standard connection. Because you booked two separate tickets (e.g., London to Paris on EasyJet, then Paris to New York on Air France), the airlines have no legal obligation to help you if the first flight is delayed. If you miss that second leg, you are technically a "no-show," and the airline will likely cancel your entire itinerary without a refund. You are then responsible for buying a new, last-minute ticket at current market prices, which can be thousands of dollars. Unlike a single-ticket booking, the first airline is not responsible for rebooking you or providing hotel vouchers. To protect yourself in 2026, you should allow at least 4 to 6 hours for a self-transfer to account for baggage claim, customs, and re-checking bags. Alternatively, booking through a service like Kiwi.com sometimes includes a "Guarantee" that covers rebooking costs if a self-transfer fails, but without such third-party insurance, the financial risk sits entirely on the traveler's shoulders.