The transportation in London is very convenient. We arrived in Heathrow T3 and the Underground station is about 5-10mins walk from the Arrival hall, it's not far but not exactly near either. Just follow the signs at the Arrival hall and head towards a ramp which will bring your all the way to the Underground station.
You can buy the TfL Oyster cards from the machines before entering the turnstiles.
![]() |
![]() |
![]() |
![]() |
![]() |
![]() |
You have the choice of using:
1. Buy a TfL Oyster card when you are in London
We used this method as it's the most convenient and safest way to travel. The Oyster card cost £7 and is non-refundable, you need to top-up upon purchase. We took the card home as a souvenir, plus there's no expiry on the card so you can use it again if/when you decided to visit London anytime in the future :)
![]() |
![]() |
2. Your own Debit/Credit card which supports contactless payment
If you have Debit/Credit cards which do not charge international transactions fees, this is also another option. We didn't use this though because we didn't want to flash either our credit card or Wise card in crowded areas, especially on the tube stations. The good thing is the transportation system is able to calculate the daily cap on buses or tube if you are using the same card, similar to the Oyster card.
3. Order a TfL Visitor Oyster card and get it posted to you
We've read some bad experiences with this as the card is sold by 3rd party merchants, not directly by TfL. The visitor card cost the same as the Oyster card you buy from the machine and the courier charges are insane! In the event the card got lost in the post, well... Good luck recovering that :(
Visitor Oyster Card
More details from TfL's official website:
Tfl tickets and Oyster card
Remember, for buses, you just need to tap once when you enter, you don't need to tap upon exit. Basically the daily cap on buses or tube is after 3 taps, you will not be charged on the 4th tap onward.
The TfL Go app is very useful as it lets you keep track of your credit on your Oyster card.
Refunds on unused credits in your Oyster card is also very simple and convenient and you can do it at the Heathrow Underground machines before heading to the airport's departure hall:
![]() |
![]() |
You only have the choice of getting the refund in cash.