How long does it take to get from Heathrow Terminal 5 to Windsor?

Around 20 to 25 minutes by taxi using the direct A308 route from the airport's southern perimeter, longer if the driver isn't familiar with the area and loops back through the central terminal complex instead.

Why does it matter that I specify Terminal 5 rather than just Heathrow?

Terminal 5 sits on its own spur, separate from Terminals 2, 3 and 4. Telling us T5 specifically means the driver takes the correct direct route from the outset rather than defaulting to the main terminal area.

Does the fare change depending on which Heathrow terminal I'm using?

No, the fixed fare for a Windsor to Heathrow transfer is the same regardless of terminal. It's confirmed at booking and doesn't change based on traffic or which terminal you need.

Is traffic ever an issue on this route?

The motorway stretch is usually quick, but Windsor's town centre roads narrow around the castle and river, and can be slow on summer weekends with tourist traffic. Build in a few extra minutes for that last mile if you're catching a flight.

Airport travel · 2026-06-24 · You Want Taxi

Getting from Heathrow Terminal 5 to Windsor

Terminal 5 to Windsor is one of the shorter, more forgiving Heathrow runs, and also one of the more commonly mis-planned ones by anyone relying on a general map rather than local knowledge of the roads around the airport.

The route

From Heathrow Terminal 5, the direct way to Windsor avoids the airport's central tunnel entirely — T5 sits on its own spur off the southern perimeter, so a driver who knows the area picks up the A308 towards Old Windsor and Datchet rather than looping back through the terminal complex. Done right, it's a run of around 20 to 25 minutes. Done by someone unfamiliar with the perimeter road layout, it can easily pick up an extra ten minutes of doubling back through roads that all look similar from a satnav's point of view but lead to very different places.

Why T5 is different from the other terminals

T5 is physically separate from Terminals 2, 3 and 4, connected by the airport's internal tunnel system but not by a quick surface link. Telling us T5 specifically at booking — rather than just "Heathrow" — means the driver takes the correct route from the start instead of defaulting to the central terminal area and correcting once they realise which one you actually need. It's a small detail that saves real minutes, especially at busy times when getting back out of the wrong terminal loop adds to the delay.

What it costs

A saloon runs a fixed price for a Windsor to Heathrow transfer, the same fare in either direction, more for an executive car — confirmed at booking, unaffected by which terminal you're using or how the traffic looks on the day. Given four people can share a saloon, that's often cheaper per head than a single Heathrow Express or rail-and-bus combination, and considerably less walking with luggage through a terminal building.

Timing around the crossing

Windsor's town centre roads narrow considerably around the castle and the river, and on a summer weekend with tourist traffic, the last mile into town can take longer than the whole motorway stretch before it. If you're catching a flight rather than arriving on one, build in a few extra minutes for this stretch specifically, especially on a Saturday. It's a similar picture if your trip starts or ends further out — our guide to getting around Windsor without a car covers the town centre layout in more detail.

If your flight lands early or late

Give us the flight number when you book the collection, and the pickup time adjusts to actual landing rather than the scheduled time — worth reading if you want the full picture on how this works in our post on what happens if your flight is delayed and a taxi is already booked.

Booking it

Give us the terminal, the flight number if you're being collected rather than dropped off, and roughly where in Windsor you need to be — the castle side, Eton side, or further out towards Old Windsor all have slightly different best approaches once you're off the A308. Get in touch or book online, and the fare and pickup time are both confirmed before the car sets off. If you're travelling on from Windsor to somewhere further afield afterwards, we also cover fixed routes from Windsor to Gatwick, Luton and Stansted.

Comparing it to public transport

The Heathrow Express and Elizabeth line both serve T5, but neither goes to Windsor directly — you'd be looking at a train into central London or to Slough, then a further change onto a Windsor-bound service, plus the walk at each end with luggage. For one person with hand luggage only, that can work fine. For anything more than that, a direct taxi door to door is simpler, and often no more expensive once you account for two or three separate tickets.

Travelling the other way — Windsor to T5

The same route works in reverse for an outbound flight, and the same advice applies: tell us T5 specifically rather than just "Heathrow" so the driver heads straight for the southern perimeter approach rather than the central terminal roads. Build a little extra time into your pickup slot if you're leaving from the castle side of Windsor on a weekend, for the same town-centre traffic reasons covered above.

The short version

T5 to Windsor is a quick, predictable run when the driver knows to use the southern perimeter route rather than the central tunnel — around 20 to 25 minutes door to door, fixed price, and no walking with luggage between a terminal and a train platform.