Local Route Guide
Slough to Heathrow Airport
A practical route guide for comparing public transport, road timing, drop-off rules and door-to-door fixed fare transfers from Slough.
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Cheapest way from Slough to Heathrow
Quick answer
Because Slough is located immediately adjacent to Heathrow, the local First Berkshire Route 7 bus is the standout winner for anyone travelling light: it goes directly to Terminal 5 in just 25 minutes and costs under £3. The Elizabeth line train is viable but forces an annoying platform change at Hayes & Harlington. If you have heavy luggage, a family in tow, or an early flight before the buses run, a pre-booked local transfer or taxi takes just 15-25 minutes door-to-door.
| Option | Journey time | Typical cost | Good to know |
|---|---|---|---|
| Bus (Route 7) | 25–35 min | from £2 | Direct from Slough Bus Station to Heathrow Terminal 5. Frequent and extremely cheap. |
| Local Taxi | 15–25 min | £25–£40 | Fastest option via the A4 or M4, though metered fares can rise in traffic. |
| Fixed-fare transfer | 15–25 min | from £84 | Premium door-to-door VIP/executive service, fixed price guaranteed. |
| Train (Elizabeth Line) | 35–45 min | from £6 | Requires a change at Hayes & Harlington. Slower than the direct bus. |
Distance: about 8 miles. The Route 7 bus terminates at Terminal 5. If you are flying from Terminals 2, 3, or 4, you must take the free Heathrow Express or Elizabeth Line shuttle from T5 to your departure terminal.
Return journey: Returning from Heathrow to Slough is incredibly easy. Just catch the Route 7 bus from Terminal 5 back to Slough, or jump in a local black cab from the terminal taxi rank for a quick 20-minute ride home.
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Route intelligence
What matters on this journey
These notes are written for the actual origin and airport pair, not copied across every route page.
Traffic and timing
Driving from Slough to LHR requires serious planning. Road journey times to London airports are highly volatile and can double during morning rush hours, Friday afternoons, or due to sudden motorway closures. Always check live traffic conditions before you set off, and never rely solely on a standard GPS estimate without a buffer.
Train, coach and interchange friction
Public transport is excellent when it works, but you must look beyond the headline ticket price. Factor in the cost of Tube connections, the physical effort of dragging luggage through busy central London stations, and whether the trains actually run early enough for your flight. What looks cheap on paper can be exhausting in practice.
Door-to-door fit
A pre-booked, fixed-fare transfer is the ultimate stress-reliever. It is highly cost-effective for families and groups, essential for early morning flights when trains aren't running, and invaluable for those with heavy luggage. Because the fare is fixed, you won't be punished financially if the driver hits unexpected traffic.
Final checks
Before paying for any transport, explicitly confirm three things: your exact departure terminal, whether the mandatory airport drop-off fee (which can be up to £10) is included in the quote, and whether your driver monitors live flight data to avoid punitive waiting charges if your return flight is delayed.
Booking checklist
Make the route decision properly
How far is Slough from Heathrow Airport?
Slough is incredibly close to Heathrow—only about 8 miles away. A direct drive via the M4 or A4 typically takes just 15 to 25 minutes depending on traffic.
What is the cheapest way to get from Slough to Heathrow?
The absolute cheapest way is taking the local First Berkshire Route 7 bus from Slough to Terminal 5. It is part of the national bus fare cap scheme, often costing just £2.
Is there a direct train from Slough to Heathrow?
No, there are no direct trains from Slough to Heathrow. Even though the Elizabeth Line serves both Slough and Heathrow, they are on different branches. You must travel to Hayes & Harlington and change trains.
Does the Elizabeth Line go from Slough to Heathrow?
Yes, but not directly. You must board an eastbound Elizabeth line train at Slough, get off at Hayes & Harlington, and board a westbound Elizabeth line train heading into the Heathrow tunnels.
How much is a taxi from Slough to Heathrow?
A standard local minicab from Slough to Heathrow typically costs between £25 and £40. Pre-booked executive or larger MPV transfers will cost more, starting from around £84.
Where do I catch the bus to Heathrow in Slough?
The primary bus is the First Berkshire Route 7, which departs from Slough Bus Station (right next to the railway station) and goes directly to Heathrow Terminal 5.
How much is an Uber from Slough to Heathrow?
An Uber from Slough to Heathrow is usually very reasonable due to the short distance, often ranging from £20 to £35. However, this can spike during morning rush hour or when the M4 is delayed.
How early should I leave Slough for a Heathrow flight?
Because the journey is so short, leaving Slough 2.5 to 3 hours before your flight is usually plenty of time. If you are taking the bus, check the timetable to ensure a service aligns with your 2-hour pre-flight arrival window.
Does the Slough bus go to Heathrow Terminal 2 and 3?
The Route 7 bus from Slough ends at Terminal 5. To reach Terminals 2 and 3, you must get off the bus at Terminal 5 and take the free underground transfer train to the Central area.
How long does the bus take from Slough to Heathrow?
The Route 7 bus is very fast for a local bus, typically taking just 25 to 35 minutes to reach Terminal 5 from Slough town centre.
What is the fastest way from Slough to Heathrow?
Driving or taking a local taxi/minicab is the fastest way, taking about 15 to 25 minutes outside of peak rush hour.
Can I walk or cycle from Slough to Heathrow?
While they are geographically close, walking or cycling is not recommended due to the major motorways (M4/M25) and lack of safe, direct pedestrian infrastructure into the airport perimeter.
Do Slough taxis charge the Heathrow drop-off fee?
Yes, the £7 Heathrow drop-off fee applies to all vehicles entering the terminal forecourts, including local Slough minicabs. Always ask if the quoted fare includes this fee.
How do I get from Heathrow back to Slough late at night?
If you arrive after the Route 7 bus stops running, your best option is to take a black cab from the official Heathrow taxi ranks, or pre-book a local Slough minicab to collect you.
Can I take luggage on the Route 7 bus from Slough?
Yes, the Route 7 is a standard local bus, so you can bring luggage, but there is no dedicated under-floor luggage hold. If you have several large, heavy suitcases, a taxi is much easier.