Trains from Cardiff to Heathrow Terminal 5 from AU$79.78

We recommend buying train tickets from Cardiff to Heathrow Terminal 5 during off-peak hours. These times are usually before 06:30, between 09:30 and 16:00, and after 19:00 on weekdays, as well as all day on weekends and bank holidays. Choosing Off-Peak train tickets means benefiting from cheaper fares and less crowded trains, making your journey more enjoyable.

You can choose a Railcard to help you save up to 1/3 on fares from Cardiff to Heathrow Terminal 5 for various reasons, such as your age (including the 16-25 Railcard or Senior Railcard) or options geared towards group travel (Family & Friends Railcard and Two Together Railcard). Discover more here.

Another option to consider is splitting your tickets, which can save you around extra 30% on fares. Instead of purchasing a direct ticket from Cardiff to Heathrow Terminal 5, you can split the route into two legs: A to C and C to B. This often turns out to be more affordable than buying a direct ticket, and you won’t even need to leave the train… or often your seat!.

Advance Tickets are usually released up to 12 weeks before the travel date and can be significantly cheaper than tickets purchased closer to departure. By planning your trip from Cardiff to Heathrow Terminal 5 ahead of time and securing your tickets early, you can save up to 61% on the cost of your travel.

If you are travelling in a group of three to nine people, take advantage of group travel discounts, offered by most train companies, for a discount of up to 1/3 on standard fares. This can make travelling from Cardiff to Heathrow Terminal 5 more affordable for families, friends, or colleagues planning a trip together.