No, TUI and easyJet are not the same company, but they have a very strong commercial partnership in 2026. TUI is a massive global travel group that operates its own airline (TUI Airways), hotels, and cruise ships. easyJet is a low-cost carrier. However, in late 2023 and continuing through 2026, TUI integrated easyJet's entire flight network into its "TUI Holidays" booking platform. This means that when you book a TUI package holiday, your flight may be operated by an easyJet aircraft instead of a TUI one. This "linked" relationship allows TUI to offer a much wider variety of departure dates and destinations than they could with their own fleet alone. While they remain separate corporate entities with different branding and service levels, they act as strategic partners to dominate the European leisure market. If you are on an easyJet-operated TUI holiday, remember that the baggage rules and onboard service will typically follow easyJet's more restrictive low-cost model unless specifically stated in your TUI booking.