| Route | Company | Frequency | Duration |
|---|---|---|---|
| Cork–Swansea (ferry) | Fastnet | 3–4 weekly | 11hr 30min |
| Dublin–Holyhead (ferry) | Stena | 4 daily | 3hr 15min |
| Dublin–Holyhead (ferry) | Irish | 2–3 daily | 3hr 15min |
| Dublin–Holyhead (cat) | Irish | 1 daily | 1hr 50min |
| Dun Laoghaire–Holyhead (cat) | Stena | 1 daily | 2hr |
| Dun Laoghaire–Holyhead (ferry) | Stena | 3–4 daily | 3hr 15min |
| Dublin–Liverpool (ferry) | P&O | 1–2 daily | 8hr |
| Rosslare–Fishguard (ferry) | Stena | 2 daily | 3hr 30min |
| Rosslare–Fishguard (cat) | Stena | 1 daily | 2hr |
| Rosslare–Pembroke Dock (ferry) | Irish | 2 daily | 4hr |
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