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LHR → London · head to head

Heathrow ExpressorElizabeth line and Thameslink to Gatwick?

The short answer

These do not go to the same place, so price is not the comparison. The Heathrow Express reaches Paddington, and the whole of Zone 1 beyond it; the Elizabeth line and Thameslink to Gatwick does not. The other airport, not the city. For a connection between Heathrow and Gatwick; for central London take the Elizabeth line, the Piccadilly line or Heathrow Express.

The Heathrow Express is quicker: 15 min against 1 h 16. The Elizabeth line and Thameslink to Gatwick varies between 75 and 101 minutes.

Heathrow Express: hours not recorded. Elizabeth line and Thameslink to Gatwick: 05:36–23:36.

Priced against each other

Whole-party totals · adult fares
What each costs for the whole party, in GBP. The cheaper of the two is marked on every row.
TravelersHeathrow ExpressElizabeth line and Thameslink to GatwickDifference
1£26£23.10£2.90
2£52£46.20£5.80
3£78£69.30£8.70
4£104£92.40£11.60
5£130£115.50£14.50
6£156£138.60£17.40
7£182£161.70£20.30
8£208£184.80£23.20

Side by side

Where each one leaves you
Heathrow Express · Heathrow ExpressHeathrow Express
From
Terminals 2 & 3 and Terminal 5; Terminal 4 by a free four-minute transfer train
To
London Paddington, and nowhere else
Luggage
Racks throughout; it is built as an airport train.
Journey
15–21 min

£26.00 against £5.90 on the Underground is 4.4 times the fare to save about 35 minutes — roughly £34 an hour, before you count what the cap would have saved you.

It does not count towards the daily cap. TfL states that Heathrow Express journeys "are not included in caps and Travelcards", so a same-day return is £52.00 and caps at nothing.

It goes to Paddington and nowhere else. If Paddington is not your destination, add a further journey and its fare to everything above.

Terminal 5 adds five or six minutes to the quoted fifteen — the operator says six, the airport says five.

The first departure from the airport is not stated here: the operator publishes the first train from Paddington at 04:34 Monday to Saturday and the last from Terminal 5 at 23:57, but does not publish a first departure from the airport itself.

Heathrow Express: price for every party size

Check fares with Heathrow Express

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The other comparisons at Heathrow