For most people arriving at Heathrow, the Elizabeth line is the better default: it costs a fraction of the Heathrow Express fare, runs on the same pay-as-you-go Oyster and contactless system as the rest of London's transport, and its central stops reach further into the city than Paddington alone. The Heathrow Express is faster to Paddington specifically and worth paying for in a narrower set of circumstances — mainly a tight connection or heavy luggage headed straight for that one station.
The short answer
Both trains start at Heathrow and both get you into central London well inside an hour. The Elizabeth line is TfL's own service, priced like the Tube and covered by the same daily fare cap as everything else you tap for that day. The Heathrow Express is a separate, privately operated premium service with its own ticket, sold apart from TfL's pay-as-you-go system — so switching between the two mid-trip does not combine into one capped fare.
Heathrow Express: what the premium buys you
Heathrow Express runs nonstop between Heathrow Central (serving Terminals 2 and 3) or Terminal 5, and London Paddington, in about 15–21 minutes depending on which terminal you start from, with departures roughly every 15 minutes through the day. There are no intermediate stops, the trains are less crowded than the Underground, and there is proper luggage space by the doors — genuinely useful if you are travelling with more than a carry-on. Fares are highest bought on the day or at the gate and noticeably cheaper booked online in advance, so if you know you are taking it, buy ahead. Once you're at Paddington, the London Underground takes over for the rest of your journey across the city.
The Elizabeth line: the practical default
The Elizabeth line calls at Heathrow Terminals 2 and 3, Terminal 4 and Terminal 5, then runs straight through central London — Paddington, Bond Street, Tottenham Court Road, Farringdon, Liverpool Street, Whitechapel and on to Canary Wharf and Abbey Wood — before continuing west from Heathrow towards Reading in the other direction. Journey time to Paddington is typically 25–35 minutes, a bit slower than the Express, but if your destination is further east than Paddington, the Elizabeth line often wins overall because you are not changing trains at all.
The price gap, in practical terms
The Heathrow Express typically costs several times a single Elizabeth line fare for the same trip to Paddington. For one traveller making a single journey, that gap is often trivial against the cost of the flight itself. For a family, or for a return trip, it adds up fast — which is why most budget-conscious visitors default straight to the Elizabeth line unless there is a specific reason not to.
Where each one actually lands you
This is the detail that matters more than the headline journey time. Heathrow Express goes to one station: Paddington. If your hotel, your onward Great Western train, or your meeting is near Paddington, that is ideal. If you are staying near Liverpool Street, the City, Canary Wharf or anywhere east of the West End, the Elizabeth line can drop you within a short walk, while a Heathrow Express passenger would need to change onto the Underground at Paddington and add time back on at the other end — often cancelling out the speed advantage entirely.
When the Express is genuinely worth it
- Tight connections — if you are catching an onward Great Western service from Paddington to Bath, Bristol or south Wales with little time to spare.
- Heavy luggage — more space, fewer stairs and interchanges than a typical Elizabeth line or Underground journey.
- Avoiding crowds — useful after a long-haul flight when you would rather not navigate a packed carriage.
- Business travel where time truly is money — the 10–15 minutes saved to Paddington itself can matter if every minute of the day is booked.
For most leisure travellers without one of those specific pressures, the extra cost buys convenience rather than necessity. See our wider London airports to the city guide for how Heathrow compares with getting into town from Gatwick, Stansted and Luton, and our Gatwick Express vs Thameslink guide if you're weighing up the equivalent choice at London's other main airport.
First-time visitors: a few practical notes
If you've just landed and are jet-lagged, both services are straightforward to navigate — signage from every Heathrow terminal is clear, and staff are on hand at ticket barriers. Whichever you choose, pick one card or payment method for your whole visit if you're using contactless, since TfL's fare capping only recognises taps from a single card or device. If you're arriving without a UK-issued visa waiver already sorted, it's worth checking the UK ETA requirements before you fly, since immigration is cleared before you reach either train. And once you're settled into central London's transport network more broadly, our guide to contactless transit payments around the world is useful if you're continuing on to other cities afterwards.
Frequently asked questions
Is the Elizabeth line cheaper than the Heathrow Express?
Yes, considerably — a single Elizabeth line fare typically costs a fraction of the Heathrow Express fare for a comparable journey to Paddington, and it also counts towards TfL's daily fare cap.
How much faster is the Heathrow Express?
It saves roughly 10–15 minutes over the Elizabeth line to Paddington specifically, since it runs nonstop. If your final destination is elsewhere in central London, the overall time saved can shrink or disappear once you factor in changing trains.
Can I use my Oyster card or contactless on the Heathrow Express?
No — the Heathrow Express is ticketed separately from TfL's pay-as-you-go system, so you need to buy a dedicated Heathrow Express ticket rather than simply tapping in with the card you use on the Tube.
Which is better for a family with lots of luggage?
The Heathrow Express is more comfortable for bulky luggage thanks to its dedicated racks and lower crowding, but the fare difference for several people can be significant — weigh the extra cost against how much the convenience matters for your trip.
Sources and further reading:
- Heathrow Express official timetable and fares.
- Transport for London (TfL) Elizabeth line route and fares pages.