United Relaunches £300 Cashback Deal for Amex Spenders

United Airlines has relaunched its £300 cashback offer for UK cardholders who spend £700 on flights via American Express. The deal is available to those booking by October 23, with no travel deadline. Eligible routes include direct flights from London Heathrow, Edinburgh, and Glasgow.

Travelers can earn miles through Star Alliance partners like Aer Lingus or Singapore Airlines in addition to the cashback reward. Those booking for two can split transactions across multiple eligible Amex cards to maximize their rebate potential.

The offer only applies to online flight bookings and does not include phone or package purchases. Travelers may book flights departing from the UK before October 23, 2026, with connections to other U.S. and Canadian cities permitted if priced through United's site.