Quick Answer
The fastest and most recommended way from Heathrow to Windsor for most travellers is by train (via a change at Hayes & Harlington or Slough), taking 35-55 minutes and costing £10-£25. The cheapest option is the public bus (Green Line 703 or TfL routes), costing under £5 but taking 1-1.5 hours. For door-to-door convenience, a pre-booked taxi or private transfer takes 25-40 minutes but costs £40-£70+.
By Train: The Fastest and Most Efficient Route
The train is the optimal balance of speed, cost, and frequency for reaching Windsor from Heathrow. There is no single direct train; all journeys require one simple change. You have two primary route options, both involving the Elizabeth Line or the Heathrow Express for the first leg.
| Route Option | Key Steps | Approx. Journey Time | Approx. Cost (Off-Peak) | Best For |
|---|---|---|---|---|
| Via Hayes & Harlington (Most Common) | 1. Elizabeth Line from Heathrow to Hayes & Harlington. 2. Change to a GWR train to Windsor & Eton Central. |
35-50 mins | £10.70 - £12.10 | Balance of speed & cost; frequent services. |
| Via Slough (Slightly Faster) | 1. Elizabeth Line or Heathrow Express from Heathrow to Paddington, then a connecting GWR train to Slough. OR Elizabeth Line direct to Slough (slower). 2. Change at Slough for a 5-min shuttle to Windsor & Eton Central. |
30-45 mins (if using HEX) | £24.50+ (with HEX) / £11-£15 (Elizabeth Line only) | Absolute fastest time if combining Heathrow Express. |
Step-by-Step Guide: Via Hayes & Harlington
- Buy a Ticket: Purchase a through ticket to "Windsor & Eton Central" from any Heathrow ticket machine or online. It covers both legs of your journey.
- Board the Elizabeth Line: Follow signs for the Elizabeth Line (purple) in your terminal. Take any westbound train towards Reading/Abbey Wood. Alight at Hayes & Harlington (approx. 15 mins from T2/T3).
- Change Trains: At Hayes & Harlington, cross the platform or go to an adjacent platform to board a Great Western Railway (GWR) train to Windsor & Eton Central. These run every 20-30 minutes.
- Arrive in Windsor: The train terminates at Windsor & Eton Central station, which is directly opposite the gates to Windsor Castle.
Important Considerations
- Which Windsor Station? Windsor has two stations: Windsor & Eton Central (adjacent to the Castle) and Windsor & Eton Riverside (a 10-min walk). Trains from Heathrow connections go to Central. Riverside is served by trains from London Waterloo.
- Luggage: Trains have standard luggage racks. During peak times, space can be limited.
- Oyster/Contactless: You can use contactless payment or Oyster for the Elizabeth Line leg to Hayes & Harlington, but you must tap out and buy a separate paper ticket for the GWR leg to Windsor, as it is outside the TfL zones.
By Bus: The Most Budget-Friendly Option
If your priority is minimizing cost and you're not pressed for time, the bus is an excellent choice. Services are reliable and offer a chance to see the local suburbs. There are two main types of bus services.
1. Green Line 703 (Long-Distance Coach)
- Route: Direct service from Heathrow (Central Bus Station, Terminals 2 & 3) to Windsor, stopping at various points in the town centre including near the Castle.
- Frequency: Approximately every 30 minutes.
- Journey Time: 50-70 minutes, depending on traffic.
- Cost: From around £5 one-way if booked online in advance. More if paid on board.
- Key Info: More comfortable than a local bus, with dedicated luggage space. Advance booking via Green Line website is recommended for the best price.
2. Local Public Buses (TfL Services)
- Primary Route: Transport for London bus 441 from Heathrow Terminal 5 to Slough, then change to bus 702 or 703 to Windsor. From other terminals, take the RailAir Link bus A10 to Slough first.
- Frequency: Very frequent (every 10-15 minutes).
- Journey Time: 60-90 minutes due to multiple stops and potential change.
- Cost: A London bus fare (capped at £5.75/day with contactless/Oyster). The journey to Windsor is outside London zones, so you'll need to pay an additional fare for the Slough-Windsor leg (around £2-£3).
- Key Info: The cheapest possible method. Not ideal with heavy luggage. Use the TfL Journey Planner for real-time routing.
By Taxi & Private Transfer: Door-to-Door Convenience
For groups, those with lots of luggage, or travellers arriving late at night, a direct taxi or pre-booked private transfer is the most convenient, though costly, option.
Pre-Booked Minicabs & Private Transfers
- Cost: £40 - £70 for a standard car (1-4 passengers). Prices are fixed when booked in advance.
- Journey Time: 25-40 minutes, depending on terminal and traffic.
- How to Book: Use reputable pre-booked minicab companies like Minicabit or local Windsor firms. Your driver will meet you in the arrivals hall with a name sign.
- Advantages: Fixed price, meet-and-greet, 24/7 service, suitable for families.
Heathrow Black Cabs (Taxis)
- Cost: £65 - £90+ (metered). The fare is not fixed and will be higher in traffic, at night, or on weekends.
- Where to Find: Official taxi ranks are located directly outside every terminal.
- Consideration: Significantly more expensive than pre-booking. Only recommended if money is no object or you need an immediate, guaranteed ride.
Our Advice: For a private hire, always pre-book. It is safer, cheaper than a black cab, and guarantees availability.
Cost & Time Comparison: Which Option is Best for You?
| Transport Method | Approx. Door-to-Door Time | Approx. Cost (One-Way) | Number of Changes | Best Suited For |
|---|---|---|---|---|
| Train (via Hayes) | 35 - 55 mins | £10 - £13 | 1 (Change of train) | Most travellers â best balance. |
| Bus (Green Line 703) | 50 - 80 mins | £5 - £10 | 0 (Direct bus) | Budget travellers without time pressure. |
| Pre-Booked Taxi | 25 - 40 mins | £40 - £70 | 0 (Direct) | Groups of 3-4, families, late-night arrivals. |
| Black Cab (Taxi Rank) | 25 - 40 mins | £65 - £90+ | 0 (Direct) | Immediate travel, unlimited budget. |
Verdict: For solo travellers and couples, the train is the clear winner. For groups of 3 or more, a pre-booked taxi can become cost-competitive and is far more convenient. The bus wins on price alone.
Traveler Tips & Insider Experience
Beyond schedules and fares, these practical tips will make your journey smoother.
- Luggage Strategy: If you have large suitcases and are taking the train, avoid peak commuting hours (7:30-9:30 AM, 4:30-6:30 PM) when trains are crowded. For a hassle-free day trip to Windsor, consider using a left luggage facility at Heathrow before travelling.
- The Windsor Change: The change at Hayes & Harlington or Slough is typically very easyâoften just crossing the platform. Allow 5-10 minutes connection time in your planning.
- Weekend & Holiday Travel: Check for engineering works on National Rail (National Rail Enquiries) before you travel, especially on weekends. Rail replacement buses can significantly extend your journey time.
- On Arrival in Windsor: Windsor & Eton Central station is part of a quaint shopping arcade. If you arrive at Riverside, enjoy the scenic 10-minute walk along the Thames River to reach the Castle.
- Returning to Heathrow: Allow plenty of extra time for your return journey. Factor in potential traffic (for bus/taxi) and the need to check in/drop bags. We recommend leaving Windsor at least 3.5 hours before a flight departure.
FAQs: Heathrow to Windsor Transport
Is there a direct train from Heathrow to Windsor?
No, there is no direct train from Heathrow Airport to Windsor & Eton Central or Riverside. All train journeys require one change, typically at either Hayes & Harlington or Slough stations.
What is the cheapest way to get from Heathrow to Windsor?
The cheapest way is by public bus. The Green Line 703 bus or local Transport for London buses cost just a few pounds, though the journey is slower, taking around 1 to 1.5 hours.
What is the fastest way to get from Heathrow to Windsor?
The fastest overall door-to-door option for most travellers is the combination of the Heathrow Express or Elizabeth Line to a mainline rail station, then a connecting train to Windsor. A taxi is the fastest direct option but is significantly more expensive.
How much is a taxi from Heathrow to Windsor?
A pre-booked private taxi or minicab from Heathrow to Windsor typically costs between £40 and £70. Black cabs (taxis hailed at ranks) are more expensive, usually costing £65 to £90+ for the same journey.
Can I use the London Underground (Tube) to get to Windsor?
No, you cannot reach Windsor directly on the London Underground. The Tube network does not extend to Windsor. You can take the Piccadilly Line from Heathrow into London, but to reach Windsor you must then transfer to a National Rail service from a main London station like Waterloo or Paddington, which is a longer and more complex route.
How long does the train from Heathrow to Windsor take?
The total train journey, including the change, typically takes between 35 to 55 minutes, depending on your starting terminal, connection wait time, and which Windsor station you are heading to.
Where do I catch the bus from Heathrow to Windsor?
Buses depart from the central bus stations at each Heathrow terminal. Look for stops serving the Green Line 703 (from Terminals 2 & 3) or local Transport for London buses like the 441 (from Terminal 5). Clear signage in the arrivals hall will direct you.
Is it easy to get to Windsor Castle from the train stations?
Yes. Windsor & Eton Central station is directly opposite the entrance to Windsor Castle. From Windsor & Eton Riverside station, it's a pleasant 5-10 minute walk through the town to reach the Castle grounds.