A Slough to Heathrow minicab starts at a fixed £34 for a Saloon, set before you travel and confirmed at booking. That single figure answers the question most Slough passengers really ask, and the rest of this guide explains what sits behind it: the fare for each vehicle, how distance and the M4 shape the price, what happens at night, and whether the train works out cheaper. Every number here comes from current Global Cars 247 pricing for Slough to Heathrow airport transfers, so you can budget your trip to the pound.
What a Slough to Heathrow transfer costs in 2026
A Slough to Heathrow transfer ranges from a fixed £34 to £74 in 2026, depending on the size of vehicle your group and luggage need. The price is fixed rather than metered, so the figure quoted at booking is the figure you pay for the full run into any Heathrow terminal.
| Vehicle | Capacity | Fixed fare |
| Saloon (Standard) | Up to 4 passengers, 2 cases | £34 |
| Estate | Up to 4 passengers, 4 cases | £41 |
| Executive (Business) | Up to 4 passengers, 2 cases | £47 |
| MPV | Up to 6 passengers, 3 cases | £48 |
| Minibus (MPV+) | Up to 8 passengers, 5 cases | £74 |
For most couples and families the Saloon or MPV fare is the relevant one, and the Slough to Heathrow minicab cost stays the same whether you book weeks ahead or the night before.
How far Slough is from Heathrow and the route your driver takes
The SL1 to LHR distance is short. Slough town centre sits roughly 9 to 12 Slough to Heathrow miles from the airport, with Terminal 5 the closest terminal on the Slough side. The M4 Slough to Heathrow route runs from Junction 5 or 6 onto the airport spur, which is why the journey usually takes about 20 to 30 minutes outside the busiest periods. That short mileage is the main reason the fare stays low next to longer Berkshire transfers. For terminal-specific pickup points, see our Heathrow airport transfer service.
How peak, off-peak and night-time pricing actually works
The headline £34 is a fixed fare, not a meter reading, so it does not climb when the M4 slows near Junction 4b. Peak and off-peak timing makes little difference to a pre-booked fixed price, which is the clearest advantage over a metered alternative that keeps charging while you sit in traffic. A Slough to Heathrow minicab price at night is fixed in the same way, with no surcharge for early departures or late landings, though confirming the exact figure at booking is always sensible.
Why a fixed Slough to Heathrow fare is rarely the expensive option
At £34 for up to four passengers, a Slough to Heathrow transfer is not expensive by Berkshire standards, and split across a family or a few colleagues it often costs a handful of pounds each. The fixed price removes the two things that usually make airport travel expensive: waiting-time charges in heavy traffic and last-minute booking premiums.
Minicab or train: the cheapest way from Slough to Heathrow
There is no direct train from Slough to Heathrow. The rail option uses the Elizabeth line with a change at Hayes and Harlington, taking around 38 minutes and costing roughly £12 to £22 for a single ticket. For one traveller with light luggage, the Elizabeth line can be the cheapest way from Slough to Heathrow Airport. The sums change with company, though. Two people already meet the £34 Saloon fare, and a family or a group with cases pays far less per head by transfer than by buying separate tickets and carrying luggage across platforms. So on the Elizabeth line versus a minicab from Slough question, and on whether the train is cheaper, the honest answer turns on numbers: solo and light, the train wins on cost; in a pair or group, the door-to-door Slough to Heathrow transfer cost is usually lower and far simpler.
Lock in your fixed Slough to Heathrow fare before you travel
Global Cars 247 is a licensed private hire operator, licence PO1301 with the Royal Borough of Windsor and Maidenhead, rated five stars by more than 100 Google reviewers, with one hour of free waiting included on airport pickups. Book online or message us on WhatsApp to confirm your £34 fare and pickup time.
Frequently Asked Questions
Q1. How much is a minicab from Slough to Heathrow Terminal 5?
A Saloon to any Heathrow terminal, Terminal 5 included, is a fixed £34 for up to four passengers. Terminal 5 sits on the Slough side of the airport, so it is usually the quickest terminal to reach from SL1.
Q2. Is the Slough to Heathrow fare cheaper than the train?
For a single traveller, an Elizabeth line ticket can come in below the £34 transfer. For two or more passengers, the fixed fare usually works out cheaper per person and avoids the change at Hayes and Harlington.
Q3. Does the Slough to Heathrow price change at night?
No. The fare is fixed when you book, so an early-morning or late-night transfer costs the same as a daytime one. There is no night surcharge and no meter running while you wait in traffic.
Q4. How long does the Slough to Heathrow journey take?
Most journeys take about 20 to 30 minutes, since Slough is only around 9 to 12 miles from Heathrow on the M4. Allow a little longer at peak times near Junction 4b. See our Slough airport transfer service for terminal details.
Q5. Are Slough to Heathrow fares really fixed, with nothing added later?
Yes. The price shown at booking is the price you pay, with one hour of free waiting on airport pickups. You can book your airport transfer online and confirm the exact figure for your vehicle and date in under a minute.
Q6. What is the cheapest way to get from Slough to Heathrow?
Travelling alone with light luggage, the Elizabeth line is usually the cheapest way from Slough to Heathrow Airport. In a pair or group, a fixed £34 transfer shared between passengers is normally cheaper per head and more direct.