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Cardiff Bay to Heathrow Terminal 4 Train prices and times

Looking to travel from Cardiff Bay to Heathrow Terminal 4? You can buy train tickets with Trip.com for as low as €49.66, with average prices for this route around €68.97.

To get the best deals, we recommend buying in advance and researching alternatives such as split tickets.

View More Trains
DepartureArrivalOperator
Find Tickets
06:56
3 hours 16 minutes, Changes required
Cardiff Bay
10:12
Heathrow Terminal 4
Transport for WalesGreat Western RailwayElizabeth line
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07:26
3 hours 1 minute, Changes required
Cardiff Bay
10:27
Heathrow Terminal 4
Transport for WalesGreat Western RailwayElizabeth line
Find Tickets
07:26
3 hours 16 minutes, Changes required
Cardiff Bay
10:42
Heathrow Terminal 4
Transport for WalesGreat Western RailwayElizabeth line
Find Tickets
07:56
3 hours 1 minute, Changes required
Cardiff Bay
10:57
Heathrow Terminal 4
Transport for WalesGreat Western RailwayElizabeth line
Find Tickets
07:56
3 hours 16 minutes, Changes required
Cardiff Bay
11:12
Heathrow Terminal 4
Transport for WalesGreat Western RailwayElizabeth line
Find Tickets
08:08
3 hours 19 minutes, Changes required
Cardiff Bay
11:27
Paris
Transport for WalesGreat Western RailwayElizabeth line
Find Tickets

Cardiff Bay to Heathrow Terminal 4 Train Route Details

First train
First train
06:56
Last train
Last train
23:54
Departure station
Departure station
Cardiff Bay
Arrival station
Arrival station
Heathrow Terminal 4
Journey time
Journey time
3 hours 1 minute
Distance
Distance
189 km
Price
Price
€49.66*
Train operators
Train operators
Elizabeth line, Great Western Railway, Transport for Wales

How to book cheap train tickets from Cardiff Bay to Heathrow Terminal 4

Traveling in off-peak train times

Traveling in off-peak train times

Off-Peak train tickets are generally cheaper than peak-time tickets, allowing travel outside morning (6:30 AM–9:30 AM) and evening (4:00 PM–7:00 PM) rush hours on weekdays. If your schedule allows for flexibility, choosing off-peak times for your trip from Cardiff Bay to Heathrow Terminal 4 can result in significant cost savings.
Get 1/3 off with a Railcard

Get 1/3 off with a Railcard

With a Railcard, you can save up to 1/3 on most rail fares. There are different types of Railcards available, such as the 16–25 Railcard, the Family & Friends Railcard, and the Senior Railcard, each catering to specific groups of travelers. You can discover more about 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 Bay to Heathrow Terminal 4, 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 traveling in a group, be sure to check out group travel discounts. Many train companies offer a ⅓ off standard fares for groups of three to nine people, making traveling from Cardiff Bay to Heathrow Terminal 4 more affordable for families, friends, or colleagues planning a trip together.

Cardiff Bay to Heathrow Terminal 4 train ticket types

Save money on your trip from Cardiff Bay to Heathrow Terminal 4 with suitable train tickets. It's a great way to spend less!

Why Book Train Tickets With Trip.com?

  • Split Tickets

    Best price promise

    If you find trains for a cheaper price elsewhere, let us know and we'll refund the difference*

  • Split Tickets

    Split Tickets

    Save an average of 30% on train fares by splitting your Cardiff Bay to Heathrow Terminal 4 journey

  • Split Tickets

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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%.