Triangle Parking Discount Code 2026 — Heathrow

What Triangle Parking is, and how it works

Off-site parking sits outside the airport boundary and reaches the terminal by shuttle. The important question with any off-site brand is whether you keep your keys or hand them over, because that single difference changes the price, the journey and what you are liable for.

At Heathrow Airport specifically, the cheapest and dearest eight-day options we track are £47 and £66, which is the context any single quote needs. On the airline side, british Airways dominates Terminal 5 and uses Terminal 3 for some long-haul, Virgin Atlantic operates from Terminal 3, the Star Alliance carriers cluster in Terminal 2, and Terminal 4 handles SkyTeam plus a range of Middle Eastern and Asian operators.

Triangle Parking covers Terminals 2, 3, 4 and 5 at Heathrow. Heathrow's four terminals are far enough apart that booking a car park for the wrong one is a genuine problem rather than an inconvenience — unlike Gatwick, there is no three-minute shuttle to correct it. Terminal 5 sits at the western end with its own dedicated car parks; Terminals 2 and 3 share the central terminal area; Terminal 4 sits to the south. Free inter-terminal transfers exist by rail but add 20 to 30 minutes.

What Triangle Parking should cost at Heathrow

No verified price for Triangle Parking yet. What the table below does give you is the shape of the Heathrow market on an identical eight-day stay, which is enough to tell whether a quote you have been given is normal for a off-site product.

The spread at Heathrow is £19 between the cheapest and the dearest product on the same dates, and the type of product explains nearly all of it, the brand very little. Pick the tier first and the operator second, and most of that £19 takes care of itself.

Is Triangle Parking the cheapest option?

We would rather lose a booking than publish a page claiming its own operator is cheapest when the table on the same page says otherwise. The Heathrow Airport parking discount code page prices this against everything else at the airport.

Triangle Parking at Heathrow

What we have verified, and what we have not

Serves all four operating Heathrow terminals. The brand name carries no airport and no product signal, so what you are actually booking needs stating plainly.

Against that, here is what we have not been able to confirm for Triangle Parking, and which we will not state as fact until we have:

• Whether this is valet, park and ride or on-airport
• Site location

A page that states a shuttle runs every ten minutes, when nobody timed it, is worse than one that admits it does not know — you cannot plan around a number that was invented. If you have booked with Triangle Parking recently and any of the above is wrong or missing, the contact page reaches a person.

Getting to Heathrow

The M25 between Junctions 12 and 15 is the reliable delay. Heathrow is reached from the M4 at Junction 4 for Terminals 2 and 3, and from the M25 at Junction 14 for Terminal 4 and Junction 14 or 15 for Terminal 5.

Check the postcode on the booking against the one in your satnav before leaving. It is a ten-second job that prevents the most common Heathrow parking mistake. Two return trips by car to drop off and collect will cost £6 for up to 10 minutes at every terminal, charged automatically by number plate each time at Heathrow. The UK drop-off charges guide sets out how that adds up.

How to use the Triangle Parking code

• 1
  Open the form
  Use a button on this page and the code is entered for you.
• 2
  Set your dates and times
  Airport car parks charge by the part-day, so a late return time can add one.
• 3
  Check the total, not the percentage
  Two codes at different percentages can leave you with the same total. Check it.
• 4
  Add your flight number
  The one field on the form worth going back to check before you pay.