Next bus departures
| Operated by | Vehicle type | Departure time | Departure location | Trip duration | Arrival time | Arrival location | Recommended | Price and booking link |
|---|---|---|---|---|---|---|---|---|
 | Bus | Watford Junction | Heathrow Airport (T3) | Cheapest | ||||
| Bus | Watford Junction | Heathrow Airport (T2) arrivals | Fastest | ||||
| Bus | Watford Junction | Heathrow Airport (T3) | No tags | ||||
| Bus | Watford Junction | Heathrow Airport (T3) | No tags | ||||
| Bus | Watford Junction | Heathrow Airport (T3) | No tags |
Last refresh of the prices: Last Friday at 1:22 PM GMT.
Compare 2 ways to go from Watford to Heathrow
Among the sustainable travel choices, the bus stands out as a good way to reach Heathrow. The journey takes about 48 minutes, and with fares starting at just $25, it presents an excellent value for a comfortable ride.
| Average Price | Average Duration | CO₂ emissions | Actions | |
|---|---|---|---|---|
| Average Price$25 - $26 | Average Duration48m | 1kg CO₂e | ||
Carpool | Average Price$6 - $6 | Average Duration30m | 1kg CO₂e |
Compare bus companies
Based on 92 reviews, the company was rated 4.5 stars on Busbud. Travellers were especially satisfied with the seats and the cleanliness but often complained with the WiFi. Reading RailAir ticket prices on this trip start at $25
Reading RailAir Watford Heathrow recent customer reviews
Awful the driver left early and I was not able to take my journey even though I got there before departure time
Seema S.
Frequently asked questions about travelling from Watford to Heathrow by bus
Please note that schedules, routes, or operator details shown here may be updated or vary at the time of your trip.
How much is the bus ticket from Watford to Heathrow?
The cheapest bus tickets from Watford to Heathrow start from $25. The average price for this route is around $26. Busbud recommends that you book your tickets in advance for a better chance to get the lowest possible price.
How long is the bus ride from Watford to Heathrow?
The average bus travel time from Watford to Heathrow is 48m, covering a distance of 23 km. The quickest bus can get you there in 31m and is operated by Reading RailAir.
Which bus companies service the Watford to Heathrow route?
Several major bus companies operate on this route with 38 buses available per day.
What are the earliest and latest departure times for the bus from Watford to Heathrow?
The earliest bus departs from Watford to Heathrow at 4:07am. And the latest bus departs at 10:58pm.
What are the CO₂ emissions for the bus trip from Watford to Heathrow?
A bus trip from Watford to Heathrow generates an estimated 1 kg of CO₂, making it a highly eco-friendly travel option and a mode of travel recommended by Busbud.
Find cheapest prices for buses
Price is for a one-way ticket for one passenger and based on past searches.
The cheapest trip from Watford to Heathrow was searched and found on Dec 17, 2025 with a price of $21To save money and be sure you have the best seat, it's a good idea to buy your bus tickets from Watford to Heathrow, as early as possible.
You can expect to pay from $21 to $22 for a bus ticket from Watford to Heathrow based on the last 2 days. You can expect to find the cheapest price for the trip at $21 which is on 2025-12-21.
