Train Heathrow Terminal 4 to Cardiff from £90 | Tickets & Timetables

Trip Overview

The average train between Heathrow Terminal 4 and Cardiff takes 2h 46m and the fastest train takes 2h 32m. There is an hourly train service from Heathrow Terminal 4 to Cardiff. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

2h 46m
Duration: 161 mi
Distance: £90
Average price: Hourly
Frequency

Train

best

Take the train from Heathrow Terminal 4 to London Paddingtontrain Elizabeth / ...
Take the train from London Paddington to Cardiff Centraltrain London Paddington - Swansea / ...

2h 59m

£73–154

Heathrow Terminal 4 to Cardiff train times

Trains run hourly between Heathrow Terminal 4 and Cardiff. The earliest departure is at 6:00 AM in the morning, and the last departure from Heathrow Terminal 4 is at 11:47 PM which arrives into Cardiff at 8:06 AM. All services require a transfer, and take on average 2h 46m. The schedules shown below are for the next available departures.

Departing Tuesday, June 30, 2026

10:00 PM → 1:08 AM
Arrives next day
3h 8m • 1 change
11:47 PM → 8:06 AM
Arrives next day
8h 19m • 1 change

Departing Wednesday, July 1, 2026

6:00 AM → 8:40 AM
2h 40m • 1 change
6:30 AM → 9:08 AM
2h 38m • 1 change
7:00 AM → 9:36 AM
2h 36m • 1 change
7:30 AM → 10:12 AM
2h 42m • 1 change
Show more

Departing Thursday, July 2, 2026

6:00 AM → 8:40 AM
2h 40m • 1 change
6:30 AM → 9:08 AM
2h 38m • 1 change
7:00 AM → 9:36 AM
2h 36m • 1 change
7:30 AM → 10:12 AM
2h 42m • 1 change
Show more

Frequently asked questions

Want to know about travelling from Heathrow Terminal 4 to Cardiff? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.