Belfast to Dublin Airport – Ulsterbus X1/X2

If you’re planning to travel from Belfast to Dublin Airport, the Ulsterbus X1 and X2 services offer an easy and budget-friendly option. We’ve taken this route more times than we can count, here’s everything you need to know before you board.

Departure Point: Belfast Grand Central Station

All Ulsterbus services to Dublin Airport leave from Belfast Grand Central Station, which is conveniently located in the city centre.

• Train connections from across Northern Ireland.
• Nearby shops like Tesco, Subway, and convenience stores.
• A bar inside the station.
• Close proximity to popular tourist hotels like Jury’s Inn, Europa Hotel, and Holiday Inn.

Whether you’re coming from the city centre or connecting via train, Grand Central is a very accessible departure point.

Booking Tickets: Online vs Onboard

For the best fares, book online via the Translink website or app, be aware prices can change depending on how busy and time of the day. You can also book tickets at the station—you just run the risk that the bus might be full and have to wait for the next one. Buses run through the day every 30 minutes, but do slow down throughout the night, check the website for the full timetable.

Tip:
If you’re travelling from Dublin Airport to Belfast, book your return ticket in advance. Buses can be extremely busy, especially at peak times. If you arrive earlier than your scheduled departure, you may be allowed to board an earlier bus, provided there’s available space.

Timings: X1 vs X2 – What’s the Difference?

There are two main Ulsterbus services on this route, which both leave from the same place usually at Gate 3:

• X2: Direct to Dublin Airport
• X1: Stops at Sprucefield, Banbridge, and Newry

Both buses leave about 30 minutes apart, but typically arrive at Dublin Airport around the same time.  We have gone on both buses, if we arrive early at Grand Central we will get on X1, instead of waiting in the station, we like to be on the move!

*The stops on X1 are only a few minutes if even, you might get lucky and get a toilet break in Newry, if the bus is ahead of schedule.

Journey Time:

• Total journey: Approximately 2 hours
• X2: Faster, more direct
• X1: Slightly longer, but similar arrival time.

At Dublin Airport: Drop-Off & Pick-Up Points

• Drop-off is at Terminal 2, a short walk from Terminal 1. (Sorry I didn’t get a better photo it was lashing. However, when you come off the motorway and see what looks like a book on its side building, it is time to get off.)

• Pick-up is at Terminal 1,  this is well sign posted, but it should be zone 13, stand 11. There is a shop beside it if you want to grab some snacks or drinks for the bus.

Just make sure you’re at the correct terminal when waiting for your return trip as they won’t stop at the wrong terminal!

Comfort, Cleanliness & Onboard Experience

Let’s be honest: these buses are not luxury coaches. However, they do the job –

The Good:

• Luggage storage available underneath the bus
• Direct motorway route out of Belfast, so no city traffic delays
• Usually on time – we’ve never had major issues.

The not so Good:

• Buses can be a bit dirty depending on the time of day, they are just shuttles running up and down all day, so you would expect them to get grubby, please take your rubbish off to make it more pleasant for others.
• No onboard toilets – make a bathroom stop before you board!
• Limited legroom on busy days
• No WiFi – While it works on all other Translink services, it doesn’t seem to work on the airport bus.

Our Personal Routine:

We usually aim for the back row, as Megan prefers to try and sleep (she doesn’t like this journey).

Final Thoughts: Is Ulsterbus Worth It for Dublin Airport Travel?

Absolutely!

Ulsterbus X1/X2 is reliable, affordable, and convenient, especially if you’re staying in central Belfast. While it’s not the most luxurious ride, it’s efficient and generally arrives on time.

Would we recommend it?
Yes. Just remember to book early, bring snacks, and use the toilet before boarding or bring a bottle…..

One more thing….

While there’s no physical border between Northern Ireland and the Republic of Ireland, border control officers do occasionally board the bus to check travel documents once crossed. This is typically to ensure passengers have the correct visas, as some may be permitted to stay in the UK but not in the Republic of Ireland. The only real difference you will notice when you cross the border is the signs will change from miles/kilometres and prices will change to euros.

Thanks for reading, if you have any questions about the journey please ask.

The Lewis Family.