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Cardiff to Heathrow Terminal 3 Train Route Details

First train
First train
05:14
Last train
Last train
22:47
Departure station
Departure station
Cardiff
Arrival station
Arrival station
Heathrow Terminal 3
Journey time
Journey time
2 hours 28 minutes
Distance
Distance
188 km
Price
Price
BHD 21.360*
Train operators
Train operators
Heathrow Express, Elizabeth line, Great Western Railway

How to book cheap train tickets from Cardiff to Heathrow Terminal 3

Traveling in off-peak train times

Traveling in off-peak train times

Taking advantage of Off-Peak train tickets is another effective way to save on your train journey from Cardiff to Heathrow Terminal 3. These tickets are generally cheaper and can be used during quieter periods, typically outside of morning (6:30 AM–9:30 AM) and evening (4:00 PM–7:00 PM) rush hours on weekdays.
Get 1/3 off with a Railcard

Get 1/3 off with a Railcard

Railcards offer discounts of up to 1/3 on most tickets. There are various types of Railcards catering to different types of travelers, such as the 16–25 Railcard, the Family & Friends Railcard, and the Senior Railcard. For more information on Railcards and how they can help you save, visit Railcards here.
Split tickets to save an average extra 30%

Split tickets to save an average extra 30%

Another option to consider is splitting your tickets, which can save you around an extra 30% on fares. Instead of purchasing a direct ticket from Cardiff to Heathrow Terminal 3, 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!
Book in advance to save an average of 61%

Book in advance to save an average of 61%

Did you know that purchasing Advance Tickets can significantly reduce your travel expenses? On average, these tickets can save you an impressive 61% on fares. The best part is that the earlier you book (ideally up to 12 weeks in advance), the greater the savings!
Travel in a group to save 1/3

Travel in a group to save 1/3

If you are planning a trip with a group of three to nine people, take advantage of ⅓ off standard fares with group travel discounts, offered by many train companies, perfect for journeys with your family, friends, or colleagues.

Cardiff to Heathrow Terminal 3 train ticket types

Save money on your trip from Cardiff to Heathrow Terminal 3 with suitable train tickets. It's a great way to spend less!

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*After comparing the full year of 2023 for SplitTickets and full-price tickets on Trip.com, the average savings rate for SplitTickets is 30%.