Bus Castlebar to Portmarnock from €30 | Tickets & Timetables

Trip Overview

The average bus between Castlebar and Portmarnock takes 4h 55m and the fastest bus takes 4h 19m. The bus service runs several times per day from Castlebar to Portmarnock. The journey time may be longer on weekends and holidays; use the search form on this page to search for a specific travel date.

4h 55m
Duration: 277 km
Distance: €30
Average price: Every 4 hours
Frequency

Bus

best

Take the bus from Castlebar to Airport Zone 11bus 721

5h 4m

€25–34

Castlebar to Portmarnock bus times

Buses run every 4 hours between Castlebar and Portmarnock. The earliest departure is at 2:00 AM at night, and the last departure from Castlebar is at 4:50 PM which arrives into Portmarnock at 9:43 PM. All services require a transfer, and take on average 4h 55m. The schedules shown below are for the next available departures.

Departing Wednesday, June 3, 2026

4:50 PM → 9:43 PM
4h 53m • 1 change

Departing Thursday, June 4, 2026

2:00 AM → 6:27 AM
4h 27m • 1 change
4:30 AM → 9:19 AM
4h 49m • 1 change
7:55 AM → 12:46 PM
4h 51m • 1 change
9:30 AM → 2:47 PM
5h 17m • 1 change
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Departing Friday, June 5, 2026

2:00 AM → 6:27 AM
4h 27m • 1 change
4:30 AM → 9:19 AM
4h 49m • 1 change
7:55 AM → 12:46 PM
4h 51m • 1 change
9:30 AM → 2:47 PM
5h 17m • 1 change
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Departing Saturday, June 6, 2026

2:00 AM → 6:22 AM
4h 22m • 1 change
4:30 AM → 8:49 AM
4h 19m • 1 change
7:55 AM → 12:48 PM
4h 53m • 1 change
9:30 AM → 2:51 PM
5h 21m • 1 change
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Departing Sunday, June 7, 2026

4:30 AM → 9:20 AM
4h 50m • 1 change
7:55 AM → 12:53 PM
4h 58m • 1 change
9:30 AM → 2:23 PM
4h 53m • 1 change
10:50 AM → 3:51 PM
5h 1m • 1 change
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Departing Monday, June 8, 2026

2:00 AM → 6:27 AM
4h 27m • 1 change
4:30 AM → 9:19 AM
4h 49m • 1 change
7:55 AM → 12:46 PM
4h 51m • 1 change
9:30 AM → 2:47 PM
5h 17m • 1 change
Show more

Departing Tuesday, June 9, 2026

2:00 AM → 6:27 AM
4h 27m • 1 change
4:30 AM → 9:19 AM
4h 49m • 1 change
7:55 AM → 12:46 PM
4h 51m • 1 change
9:30 AM → 2:47 PM
5h 17m • 1 change
Show more

Frequently asked questions

Want to know about travelling from Castlebar to Portmarnock? We have put together a list of the most frequently asked questions from our users such as: What is the cheapest mode of transport? What is the quickest option? How much do tickets usually cost? and many more.

Castlebar to Portmarnock buses

Trip Overview

Bus