RailAir - Heathrow Airport to Watford Junction

How To Get From Heathrow Airport To Watford – A RailAir Review

Wondering how to get from Heathrow Airport to Watford? You’ve come to the right place!

Travelling from Heathrow Airport to Watford has never been easier thanks to the RailAir coach service. 

I’m sure if you’re a Hertfordshire local you’ll know how time-consuming and expensive it can be to travel to Heathrow Airport by train.

Most routes will take you into Central London and back out again to Heathrow which really isn’t the most enjoyable journey. 

Thanks to the RailAir Heathrow to Watford Junction route, your life just got a whole lot easier

I caught the RailAir coach from Heathrow Terminal 3 to Watford Junction coming home from a 5 month solo backpacking trip

Whilst coming home from such an epic trip is never nice, it’s great when your life is made a little easier with quick and easy transport back home. 

So what do you need to know about travelling from Heathrow Airport to Watford with RailAir

Read on below to find out!

Disclaimer: This post has been sponsored by RailAir and contains affiliate links. If you decide to make a verified purchase through the links in this post I will earn a small commission. This will be at no extra cost to you. Thank you 🙂

What you need to know about travelling with RailAir 

Booking Tickets With RailAir 

Booking tickets from Heathrow Airport to Watford with RailAir 

You can either book online at www.railair.com or download the FirstBus App and book your tickets through the app. 

You can purchase 2 ticket types, a single journey which costs just £9 or a 30-day flexible return for as little as £18. 

When booking tickets you can guarantee a seat on a specific RailAir journey, however, if your travel plans change (due to delayed flights or anything else) your ticket will be accepted on any journey on the day of travel (if there are seats available).

With 30-day flexible tickets, you can amend your tickets as you need at no extra charge. 


With RailAir from Heathrow Airport to Watford, each passenger enjoys a complimentary luggage allowance of two pieces, with a total weight of up to 30kg. 

These items will be securely stored in the coach’s luggage compartment.

If you want to purchase extra luggage you can do from £5-10 per piece. 


The RailAir service from Heathrow Airport to Watford will pick you up from airport terminals 2 and 3. 


RailAir routes between Heathrow Airport and Watford run once an hour starting at 4 am and finishing at 11 pm. 

You can check out the timetables here

Why travelling with RailAir from Heathrow Airport to Watford is the best option 


Choosing to travel with RairAir from Heathrow Airport to Watford is one of the most convenient options for a few reasons. 

RailAir conveniently picks you up just outside the arrivals hall of the airport terminals, saving you from the hassle of carrying your luggage a long and far to reach the bus stop.

Secondly, at just 45-50 minutes long this journey is so much more convenient than catching the train from Heathrow Airport to Watford Junction.

Again, it also saves you from carrying your luggage through packed London tube and train stations. 


The RailAir coach service is extremely affordable, at just £9 for a single journey this is much cheaper than a train ticket. 


RailAir coaches offer an exceptionally comfortable travel experience.

You’ll enjoy spacious leather armchairs with ample legroom, and there are even a few 4-seater table arrangements (like you can find on a train).

Additionally, you can also take advantage of the free Wi-Fi and USB charging ports on board.

Does RailAir offer any other routes? 

RailAir offers two other routes to and from Reading Station and Woking/Guildford.

It’s important to note for these two other routes that RailAir offers pickup from Heathrow Airport  Terminals 2,3 & 5. 

Final Thoughts on Using the RailAir Coach Service

The RailAir service is perfect for those looking for a cheap, comfortable and convenient journey to and from Heathrow Airport

Whether you’re returning from a trip or heading out, RailAir ensures a smooth and enjoyable journey, providing a superior travel experience. 

This, in my opinion, makes it the best choice for your Heathrow airport transfer needs.

Happy Travelling 

I hope you found this review of the Heathrow Airport RailAir Coach Service useful. 

If you have any questions please do not hesitate to reach out. 

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