Heathrow handles more passengers than any other airport in the UK, and its terminals are far enough apart that treating it as one place is a mistake. Terminal 5 and Terminal 4 are on opposite sides of the airport with separate access roads. Getting between them takes twenty minutes on a good day.
Which means the single most valuable thing you can do before booking Heathrow parking is confirm your terminal. Everything else follows from that.
First: check your terminal, properly
It's printed on your booking confirmation. Check it there rather than relying on what it was last time you flew with that airline — carriers do move between terminals, sometimes at fairly short notice, and it catches out even frequent travellers.
Broadly: Terminals 2 and 3 sit together in the central area. Terminal 4 is to the south on its own access road. Terminal 5 is to the west with its own dedicated approach.
Transferring between them means the free inter-terminal train or a bus, plus the walk at each end. Budget fifteen to twenty-five minutes. That's time added to both ends of your trip, at the two moments you least want it.
Parking at the wrong Heathrow terminal isn't a disaster, but it converts a smooth departure into a rushed one — and it's completely avoidable with a thirty-second check.
Terminal 2
Officially the Queen's Terminal, and home to most Star Alliance carriers — Lufthansa, United, Air Canada, Singapore Airlines and others.
Terminal 2 sits in the central area and shares infrastructure with Terminal 3. Short stay is a few minutes' walk from the doors. Long stay is a short shuttle away and works out considerably cheaper for anything beyond a couple of days.
For most travellers, the best value here comes from off-airport heathrow park and ride rather than the official car parks. The transfer is genuinely short given how central the terminal is.
Terminal 3
Also central, a short walk from Terminal 2, and used by a broad mix of long-haul carriers including Emirates, Virgin Atlantic and American Airlines.
Options mirror Terminal 2 closely, and a car park serving one generally serves the other perfectly well. If you find a good rate at a compound advertising Terminal 2, it will almost certainly suit a Terminal 3 flight too — but confirm rather than assume.
One practical note: Terminal 3 is busy in the early morning. If you're flying before 7am, factor in extra time for shuttle queues, or consider paying for meet and greet to skip that step entirely.
Terminal 4
Separate from the central area, to the south, on its own access road. Used by SkyTeam carriers and a range of others — Air France, KLM, Etihad, Qatar Airways.
Terminal 4 has its own short stay and long stay car parks. Because it's less congested than the central terminals, drop-off and pick-up tend to be quicker and calmer.
The important point: don't park centrally for a Terminal 4 flight. The transfer is genuinely inconvenient, and any saving you found will be spent on the time and hassle of getting across.
Terminal 5
British Airways' home terminal, west of the central area with its own dedicated access road from the M25.
Terminal 5 has extensive short stay parking connected directly to the building — among the most convenient at Heathrow if you're only away a day or two. Long stay is a short shuttle ride away.
It's also the busiest single terminal at Heathrow at peak times. Early morning departures from T5 benefit noticeably from heathrow meet and greet, which removes both the car park and the shuttle from the equation. If you're on a 6am flight with bags, it's worth pricing.
Which service type to choose at Heathrow
Short trips where cost matters — off-airport park and ride
Longer trips — long stay, where the daily rate drops away
Early flights, families, heavy bags — meet and greet
One or two nights, convenience first — official short stay, if the tariff works out
If you're not sure how these differ, our complete guide to UK airport parking explains all four properly, and meet and greet vs park and ride compares the two most common.
Heathrow-specific things worth knowing
The drop-off charge
Heathrow charges for terminal drop-off. If someone is dropping you rather than you parking, that cost applies at every terminal — factor it in when comparing "get a lift" against "park the car".
ULEZ
Heathrow sits inside the Ultra Low Emission Zone. Check whether your vehicle is compliant before driving in, because a non-compliant car attracts a daily charge on top of everything else. Most cars registered after around 2015 are fine, but it's worth two minutes on the checker if you're unsure.
Traffic timing
The approach roads get genuinely busy on Monday mornings and Friday evenings. Add half an hour to your plan if you're travelling then. The M25 junctions serving Heathrow are among the busiest stretches of motorway in the country.
Terminal transfers are free but not instant
If you do end up at the wrong terminal, the inter-terminal train is free and reasonably frequent. It's a recoverable mistake — just not a fast one.
Book by terminal, not by airportWhen you search, filter for your specific terminal rather than Heathrow generally. Prices differ between terminals, and a compound serving Terminal 5 may be a long way from Terminal 4. It's the single most common Heathrow parking mistake.Security: what to look for
Heathrow has a large and competitive off-airport parking market, which is good for prices and means the usual due diligence matters.
Look for the Park Mark Safer Parking Award as a minimum. It means police have physically assessed the site for perimeter security, lighting, surveillance and management.
Then ask where exactly the compound is. A reputable operator will name it. If the answer is vague — "a secure site near the airport" — book elsewhere. That's the clearest warning sign in this market, and around a major hub like Heathrow there's more than enough legitimate competition that you don't need to take the risk.
Booking well
Heathrow follows the same pricing curve as everywhere else, but the peaks are sharper because demand is higher. Four to eight weeks ahead is the target for ordinary dates; eight to twelve for school holidays and Christmas.
The full picture is in when should you book airport parking?, and if you're looking for every available saving, twelve things that work covers the rest.
In short
Confirm your terminal. Search for that terminal specifically rather than Heathrow as a whole. Choose park and ride unless your trip genuinely warrants meet and greet. Check for Park Mark, check the site is named, and book four to eight weeks out.
Do that and Heathrow parking stops being the fiddly part of the trip.
Getting to Heathrow by car
A few practical notes that make the drive easier.
Terminals 2 and 3 are reached through the central tunnel from the M4 spur or the A4. Follow signs for "Central Terminals" rather than a specific number — the split comes later.
Terminal 4 has its own exit to the south, signed separately well before you reach the central area. If you find yourself in the tunnel, you've gone too far.
Terminal 5 is signed from the M25 at junction 14 and has a dedicated approach. It's the most straightforward of the four to drive to, which is some compensation for it being the busiest.
Set your sat-nav to the car park's postcode rather than "Heathrow Airport". The airport is large enough that a generic destination will take you to the wrong side of it.
How long to allow
Working backwards from your flight:
Off-airport park and ride — arrive at the compound around 45 minutes before you want to be at the terminal. That covers parking, the shuttle wait and the transfer.
Meet and greet — 15 to 20 minutes before you want to be inside. The handover itself takes five.
Official long stay — 30 minutes, including the internal shuttle.
Official short stay — 15 minutes, mostly walking.
Add half an hour to any of those during school holidays or on a Monday morning.
If your terminal changes
It happens, usually with a few weeks' notice. Your parking booking will not automatically follow.
Ring the operator as soon as you know. Most will amend the booking without fuss, particularly if there's time before your travel date. What you don't want is to discover the mismatch on the morning, when your only option is the inter-terminal train and a rising sense of regret.
