The cheapest and fastest trains from London Heathrow Airport to Cardiff
Cheapest price
$133
Average price
$153
Fastest journey
2 h 20 m
Average duration
2 h 23 m
Trains per day
18
Distance
189 km
The best way to find a cheap train ticket from London Heathrow Airport to Cardiff is to book your journey as far in advance as possible and to avoid traveling at rush hour.
The average ticket from London Heathrow Airport to Cardiff will cost around $153 if you buy it on the day, but the cheapest tickets can be found for only $133.
It's difficult to get from London Heathrow Airport to Cardiff without transferring at least once.
C28999+
G24230 · G23748+
P22622
G24230 · G23748+
P22622
G24230 · G23748+
P22622
G24205 · G23741+
P22621
G24205 · G23741+
P22621
C28999+
P22621
C28993+
P22620
C29005+
P22622
C28999+
P22621
C28993+
P22620Travel Information
Compare bus and train for London Heathrow Airport to Cardiff
Omio recommends booking the bus as it is the most popular option from London Heathrow Airport to Cardiff among Omio's users. If you are prioritising price take the bus with prices starting from €10. For those with little time consider booking a train which can get you there in 2h 15m. The ticket price range depends on the travel mode: a bus costs an average of €10, and a train costs an average of €59.
Distance: 117 miles (189 km)
Compare train with
| Train | Most popular Bus |
|---|---|
€90 Average price | €22 Average price Cheapest |
2h 45m Average total duration Fastest 2h 15m Onboard + 30m Additional time* | 3h 52m Average total duration 3h 22m Onboard + 30m Additional time* |
![]() Most popular train company | ![]() Most popular bus company |
Direct Options | Direct Options |
Live departures
London Heathrow Airport to Cardiff train times
The table below shows live departures for London Heathrow Airport to Cardiff trains for today, Wednesday, January 14. You can also manually refresh the results below to see updated train journeys.
| Provider | Departs | Duration | Arrives | Transfers | Tickets |
|---|---|---|---|---|---|
C29101+ P22638 | On time 5:17 PM Heathrow Terminals 2 & 3 (HXX) | 2h20 | 7:37 PM Cardiff Central (CDF) | 1 transfer | |
C29107+ P22639 | On time 5:47 PM Heathrow Terminals 2 & 3 (HXX) | 2h27 | 8:14 PM Cardiff Central (CDF) | 1 transfer | |
C29113+ P22640 | On time 6:17 PM Heathrow Terminals 2 & 3 (HXX) | 2h21 | 8:38 PM Cardiff Central (CDF) | 1 transfer | |
C29119+ P22641 | On time 6:47 PM Heathrow Terminals 2 & 3 (HXX) | 2h15 | 9:02 PM Cardiff Central (CDF) | 1 transfer | |
| Thursday, January 15 | |||||
G24157+ P22620 | On time 8:00 AM Heathrow Terminal 4 (HAF) | 2h37 | 10:37 AM Cardiff Central (CDF) | 1 transfer | |
G24157 · G23721+ P22620 | On time 8:00 AM Heathrow Terminal 4 (HAF) | 2h37 | 10:37 AM Cardiff Central (CDF) | 2 transfers | |
G24157 · G23721+ P22620 | On time 8:06 AM Heathrow Terminals 2 & 3 (HXX) | 2h31 | 10:37 AM Cardiff Central (CDF) | 2 transfers | |
C28993+ P22620 | On time 8:12 AM Heathrow Terminal 5 (HWV) | 2h25 | 10:37 AM Cardiff Central (CDF) | 1 transfer | |
C28993+ P22620 | On time 8:17 AM Heathrow Terminals 2 & 3 (HXX) | 2h20 | 10:37 AM Cardiff Central (CDF) | 1 transfer | |
L23940 · G23731+ P22621 | On time 8:20 AM Heathrow Terminal 5 (HWV) | 2h47 | 11:07 AM Cardiff Central (CDF) | 2 transfers | |
C28996+ G24205 · G23741+ P22621 | On time 8:27 AM Heathrow Terminal 5 (HWV) | 2h40 | 11:07 AM Cardiff Central (CDF) | 3 transfers | |
G24205+ P22621 | On time 8:30 AM Heathrow Terminal 4 (HAF) | 2h37 | 11:07 AM Cardiff Central (CDF) | 1 transfer | |
G24205 · G23741+ P22621 | On time 8:30 AM Heathrow Terminal 4 (HAF) | 2h37 | 11:07 AM Cardiff Central (CDF) | 2 transfers | |
G24205 · G23741+ P22621 | On time 8:36 AM Heathrow Terminals 2 & 3 (HXX) | 2h31 | 11:07 AM Cardiff Central (CDF) | 2 transfers | |
C28999+ G24230 · G23748+ P22622 | On time 8:42 AM Heathrow Terminal 5 (HWV) | 2h58 | 11:40 AM Cardiff Central (CDF) | 3 transfers | |
C28999+ P22621 | On time 8:42 AM Heathrow Terminal 5 (HWV) | 2h25 | 11:07 AM Cardiff Central (CDF) | 1 transfer | |
G24230 · G23748+ P22622 | On time 8:45 AM Heathrow Terminal 4 (HAF) | 2h55 | 11:40 AM Cardiff Central (CDF) | 2 transfers | |
C28999+ P22621 | On time 8:47 AM Heathrow Terminals 2 & 3 (HXX) | 2h20 | 11:07 AM Cardiff Central (CDF) | 1 transfer | |
G24230 · G23748+ P22622 | On time 8:51 AM Heathrow Terminals 2 & 3 (HXX) | 2h49 | 11:40 AM Cardiff Central (CDF) | 2 transfers | |
G24246+ P22622 | On time 9:00 AM Heathrow Terminal 4 (HAF) | 2h40 | 11:40 AM Cardiff Central (CDF) | 1 transfer | |
C29005+ P22622 | On time 9:12 AM Heathrow Terminal 5 (HWV) | 2h28 | 11:40 AM Cardiff Central (CDF) | 1 transfer | |
C29005+ P22622 | On time 9:17 AM Heathrow Terminals 2 & 3 (HXX) | 2h23 | 11:40 AM Cardiff Central (CDF) | 1 transfer | |
This is the last train of the day. | |||||
Find all the dates and times for this journey
Compare prices and tickets London Heathrow Airport to Cardiff by bus or train
Compare bus and train prices over the next three weeks. See the best deals at a glance, find the lowest fares, and choose the option that fits your budget.
Jan 14
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Jan 22
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Feb 01
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Feb 03
Why should you book London Heathrow Airport to Cardiff trains with Omio?
Great Western Rail operates all train services from London Heathrow Airport to Cardiff. Omio is the only official third party seller for Great Western Rail tickets.
Why book with Omio vs Great Western Rail?
- Designed for International Travelers: Omio is in your language including 24/7 customer service and offers multiple payment options, including PayPal, credit cards, and bank transfer, in your preferred currency.
- Compare all your options: Omio allows you to compare Great Western Rail with all available travel options, which are bus and train to ensure you get the best deal for traveling from London Heathrow Airport to Cardiff.
Why book with Omio over Trainline and Rail Europe?
- Official reseller: Great Western Rail tickets can only be bought on Omio or Great Western Rail's website as Omio is the only official third party seller for Great Western Rail tickets. Trainline, RailEurope, and Rail.Ninja do not sell Great Western Rail tickets as they are not official sellers.
- Multiple modes of transport: Omio allows you to compare travel options including bus and train to find the ideal travel option from London Heathrow Airport to Cardiff.
Journey information
Overview: Train from London Heathrow Airport to Cardiff
Train Ticket Prices
- Budget Options: Train tickets from London Heathrow Airport to Cardiff start from as low as $73 (€59) if booked well in advance.
- Standard Fares: Typically, trains cost $112 (€90) depending on the train type and class.
Journey Duration & Frequency
- On average there are 59 daily trains from London Heathrow Airport to Cardiff with 0 direct service.
- The fastest trains can take as little as 2h 18m but the average duration is 2h 15m
Train Operators
- Travel from London Heathrow Airport to Cardiff with Great Western Rail
- The most booked train company for this route on Omio is Great Western Rail.
Stations & Schedule
- First train typically departs at 06:06 AM and the last at 09:25 PM
Distance 117 miles (189 km) |
Average train duration 2h 15m |
Cheapest ticket price $73 (€59) |
Trains per day 59 |
Fastest train 2h 18m |
First train 06:06 |
Last train 21:25 |
Train companies: Great Western Rail from London Heathrow Airport to Cardiff trainsGreat Western Rail trains will get you between London Heathrow Airport and Cardiff from $12 (€10). With over 1000 travel companies on Omio, you can find the best train times and tickets for your trip.
Great Western Rail
FAQs: Trains from London Heathrow Airport to Cardiff
Find answers to the most common questions about traveling from London Heathrow Airport to Cardiff by train. From journey times and ticket prices to direct connections, first and last departures, and even whether the route is scenic, our FAQs cover everything you need to plan your trip. Whether you’re looking for the fastest train, the cheapest option, or tips for making the most of your visit at Cardiff, this guide helps you travel smarter and with confidence.

popular train stations
Popular train stations from London Heathrow Airport to Cardiff
- Mon - Fri: 05:40 - 21:30
- Sat: 05:40 - 21:30
- Sun: 07:30 - 21:30
- Free Wi-Fi in the station.
- Type of shops available: News agent and convenience store
- Car Park: Brewery Car park
- Gourmet Coffee Bar & Kitchen
- Pret a Manger
- Tesco Express
- Taxi: Taxi rank is on the right as you exit the main station entrance
- There is step-free access in the whole station. There are also ramps for train access and elevators in the station.
- Toilets Location: The toilets are located on Platforms 1 to 8. The National Key toilets are located in the East Subway near the lifts and on Platform 8; these toilets are operated by a radar key and are only available during staffing hours.
- National key toilets: Yes
- National key toilets location: The National Key/Accessible toilets are located in the East Subway near the lifts and on Platform 8; these toilets are operated by a RADAR key and are only available during staffing hours.
- Baby changing facilities: Yes
- Clayton Hotel Cardiff
- Cardiff Marriott Hotel
- Travelodge Cardiff Central
- Waiting rooms location: On platforms 1/2, 3/4, 6/7 and 8.
- Mon - Fri: 05:40 - 21:30
- Sat: 05:40 - 21:30
- Sun: 07:30 - 21:30
- Storage sheltered: Yes
- Storage location: East end of platforms 1 and 2, 3 and 4, 6 and 7 - also at the front and rear of the station.
- Storage CCTV: Yes
- Commuter rail lines: City Line, Rhondda Line, Rhymney Line, Valley Line, South Wales Main Line
- Train lines: Transport for Wales, CrossCountry, Great Western Railway
- Location for Rail Replacement Services: At the rear car park (Penarth Road entrance)
- Opening hours: Monday, Tuesday, Wednesday, Thursday, Friday, Saturday 07:40 - 18:00 Sunday 10:00 - 15:30 Temporary opening hours due to the COVID-19 pandemic.
- Car Park: No
- Staff help available: Yes
- Step free access coverage: Yes
- Accessible ticket machines: There are accessible ticket machines at this station
- Accessible ticket machines note: The ticket machines are near the main entrance and take cash and major debit and credit cards.
- Accessible toilets: Yes
- Ramp for train access: Yes
- Wheelchairs available: No
- Impaired mobility set down / pick up points available: No
- Toilets Location: The toilets are located on Platform 4. The National key toilets are located on the Main Concourse to the right of the Ticket Office; these toilets are operated by a radar key and are only available during staffing hours.
- National key toilets: Yes
- Baby changing facilities: No
- Travelodge
- Storage sheltered: No
- Storage location: to the right of the station front
- Storage CCTV: Yes
- Information available from staff: Yes - from ticket office
- Helpline Contact: 03333 211202
- Passenger Information Systems: Departure screens, Announcements, Arrival screens
- Onward travel information: Limited service from stop outside station Mondays to Fridays
- Location for Rail Replacement Services: For services towards Cardiff Central use the bus stop at the front of the station. For services towards Cathays use the bus stop in front of the shop opposite the station entrance. Please ask a member of station staff if you are unsure of which stop to use.
- Opening hours: Monday, Tuesday, Wednesday, Thursday, Friday 07:30 - 18:30 Saturday 09:30 - 15:30 Sunday Closed
- Car Park: No
- Staff help available: Yes
- Step free access coverage: No
- Step free access note: Category B3. While both platforms are step-free, there is no facility for wheelchair users, mobility scooter users or persons with reduced mobility to cross between Platform 1 and 2 due to a steep footbridge. Customers who have travelled from the Valleys and wish to access the University or the Civic Centre are advised to travel to Queen Street station, change onto a North-bound service and alight at Cathays on the return service.
- Accessible ticket machines: There are accessible ticket machines at this station
- Accessible ticket machines note: The ticket machine(s) take cash, and major debit and credit cards. The machine on the Cardiff-bound platform is only available during staffing hours. The machine on the Pontypridd-bound platform is available all the time.
- Ramp for train access: Yes
- Wheelchairs available: No
- Impaired mobility set down / pick up points available: No
- Travelodge
- Information available from staff: Yes - from ticket office
- Helpline Contact: 03333 211202
- Passenger Information Systems: Departure screens, Arrival screens
- Onward travel information: The nearest bus stop is on Park Place
- Location for Rail Replacement Services: At the bus stops adjacent to the Cardiff University Students' Union on Park Place
Most popular train connections from London Heathrow Airport
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