Heathrow Airport sits inside London's Ultra Low Emission Zone (ULEZ) — and that catches a lot of non-London drivers by surprise. If your car does not meet the ULEZ standards, you pay £12.50 a day to drive at the airport, regardless of where you parked. Here is exactly when it applies, what it costs you on a typical airport trip, and how to find out in 30 seconds whether your car is compliant.

Why Heathrow is in ULEZ

On 29 August 2023 London's ULEZ was expanded to cover the whole of Greater London, including Heathrow Airport. All four terminals — T2, T3, T4 and T5 — sit inside the charging boundary, and so do every airport car park, drop-off zone and approach road.

It operates 24 hours a day, every day of the year except Christmas Day.

What the charge is and when it applies

  • £12.50 per day for any non-compliant car, motorcycle, van or specialist vehicle.
  • Charged per day, not per trip. If you drive in and out twice on the same calendar day, you pay £12.50 once, not £25.
  • Only when the vehicle is driven within the zone. A non-compliant car left stationary in a Heathrow car park for the week is not charged for the days you are away — only the day you drove in and the day you drive out.
  • Fully electric vehicles are exempt.

What it costs you on a typical airport trip

For a non-compliant car, the maths is simple: £12.50 on the day you arrive, and £12.50 on the day you collect your car. That is £25 across a typical airport trip, regardless of how long you were away. There is no charge for the days in between, because the car was not moving.

If your car is compliant — and most modern cars are — you pay nothing.

Is your car compliant?

The thresholds are:

  • Petrol cars: Euro 4 emissions standard. As a rough rule of thumb, most petrol cars from 2006 onwards are compliant.
  • Diesel cars: Euro 6. Most diesels from September 2015 onwards are compliant.
  • Motorcycles and mopeds: Euro 3.
  • Fully electric vehicles: exempt.

For a definitive answer in 30 seconds, use Transport for London's free vehicle checker — search "TfL ULEZ vehicle check" — and enter your number plate. It tells you yes, no, or "exempt" instantly.

How to pay

You pay TfL directly — not the airport, not your parking operator. Three routes:

  • One-off payment on the TfL website or app — by midnight on the third day after the day you drove. Pay it the day before or on the day to be safe.
  • TfL Auto Pay — a £10/year subscription that automatically detects ULEZ trips and bills you monthly. Worth it only if you cross the zone regularly.
  • Phone — TfL contact centre for one-offs.

Miss the deadline and a Penalty Charge Notice arrives — typically £180 (reduced to £90 if you pay within 14 days). That alone is the reason to set a phone reminder the moment you leave the car park.

A common misconception

You do not escape ULEZ by parking at an off-airport compound. The compounds around Heathrow — Colnbrook, Slough, Hayes, the area along the A4 — are all inside the expanded ULEZ. Off-airport or on-airport, the charge is the same: a non-compliant car driven within Greater London on a given day owes £12.50.

Practical takeaways

  1. Check your car on TfL's vehicle checker before you book.
  2. If compliant — do nothing. No charge, no payment, no admin.
  3. If non-compliant — budget £25 (£12.50 × two days) on top of your parking, and pay TfL within the deadline.
  4. Don't be fooled by off-airport "outside London" claims. If it's near Heathrow, it's in ULEZ.

Once you know the rules, ULEZ at Heathrow is straightforward — and for most drivers it costs nothing. Compare your Heathrow parking options with live prices, with no hidden charges on top.

Frequently asked questions

Is Heathrow Airport in the ULEZ zone?

Yes. All four terminals (T2, T3, T4 and T5) and all airport car parks sit inside the expanded ULEZ, which has covered the whole of Greater London since 29 August 2023.

How much is ULEZ at Heathrow in 2026?

£12.50 per day for non-compliant vehicles. It is charged once per calendar day, not per trip — so multiple journeys on the same day still cost £12.50, not double.

Do I pay ULEZ for every day my car is parked at Heathrow?

No. ULEZ only applies on days the vehicle is driven within the zone. For a typical airport trip that is two days — the day you arrive and the day you collect. The days in between, while the car is stationary, are not charged.

Are electric cars charged ULEZ at Heathrow?

No. Fully electric vehicles are exempt from the ULEZ charge.

Can I avoid ULEZ by parking off-airport?

No. The off-airport compounds near Heathrow — Colnbrook, Slough, Hayes and the surrounding area — are all inside the expanded ULEZ. The charge applies regardless of which car park you choose.

Related guides

Last fact-checked May 2026 against Transport for London's published ULEZ information. ULEZ rates and rules can change — verify on tfl.gov.uk before you travel.