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Explore cheap prices from Heathrow Airport to Cardiff

Here are this week's cheapest tickets from Heathrow Airport to Cardiff, along with train details. Our users discover these prices, which are updated daily. Given the frequent price changes, please refer to the latest update.

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This train is sold out. View full timetable and prices.
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AU$78.38
Thu18Sep
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This train is sold out. View full timetable and prices.
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AU$78.38
Fri19Sep
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This train is sold out. View full timetable and prices.
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AU$83.50
Sat20Sep
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This train is sold out. View full timetable and prices.
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AU$81.45
Sun21Sep
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This train is sold out. View full timetable and prices.
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AU$78.38
Mon22Sep
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This train is sold out. View full timetable and prices.
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AU$78.38
Tue23Sep
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This train is sold out. View full timetable and prices.
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AU$78.38
Wed24Sep
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*Price changes due to the real-time price fluctuations, please refer to the latest price.

Heathrow Airport to Cardiff train prices and times

Planning a journey from Heathrow Airport to Cardiff? Trip.com offers train tickets starting from as low as AU$78.38, with average prices for this route around AU$114.93. To ensure you get the most affordable fares, we suggest exploring alternatives like split tickets.

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DepartsArrivesOperator
Find Tickets
15:47
2h 18m, No direct
Heathrow Terminals 2 & 3
18:05
Cardiff Central
Heathrow ExpressGreat Western Railway
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16:06
2h 31m, No direct
Heathrow Terminals 2 & 3
18:37
Cardiff Central
Elizabeth lineGreat Western Railway
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16:17
2h 20m, No direct
Heathrow Terminals 2 & 3
18:37
Cardiff Central
Heathrow ExpressGreat Western Railway
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16:25
2h 45m, No direct
Heathrow Terminals 2 & 3
19:10
Cardiff Central
Elizabeth lineGreat Western Railway
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16:47
2h 23m, No direct
Heathrow Terminals 2 & 3
19:10
Cardiff Central
Heathrow ExpressGreat Western Railway
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16:55
2h 41m, No direct
Heathrow Terminals 2 & 3
19:36
Paris
Elizabeth lineGreat Western Railway
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Heathrow Airport to Cardiff train route details

First train
First train
00:04
Last train
Last train
23:02
Departure station
Departure station
Heathrow Airport
Arrival station
Arrival station
Cardiff
Journey time
Journey time
2h 14m
Distance
Distance
189 km
Price
Price
AU$78.38*
Train Operators
Train Operators
Heathrow Express, Elizabeth line, CrossCountry

How to book cheap train tickets from Heathrow Airport to Cardiff

Travelling in off-peak train times

Travelling in off-peak train times

Taking advantage of Off-Peak train tickets is another effective way to save on your train journey from Heathrow Airport to Cardiff. These tickets are generally cheaper and can be used during quieter periods, typically outside of morning (06:30-09:30) and evening (16:00-19:00) rush hours on weekdays.
Using the Railcard for 1/3 off

Using the Railcard for 1/3 off

You can choose a Railcard to help you save up to 1/3 on fares from Heathrow Airport to Cardiff 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.
Split Tickets to save an average extra 30%

Split Tickets to save an average extra 30%

Splitting tickets is a perfectly legal practice that involves purchasing separate, cheaper tickets for different segments of your journey on the same train instead of a single ticket for the entire trip. For example, if you are travelling from Heathrow Airport to Cardiff, you might discover that buying a ticket from A to C, and then another ticket from C to B, is more economical than a direct ticket.
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!
Group travels to save 1/3

Group travels to save 1/3

If you are travelling 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 travelling from Heathrow Airport to Cardiff more affordable for families, friends, or colleagues planning a trip together.

Heathrow Airport to Cardiff train ticket types

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

Why Book Train Tickets With Trip.com?

  • Split Tickets

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  • Split Tickets

    Split Tickets

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

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