How to book ferries

By the Viamo editorial team · Editor Terje Moy · Last updated July 2026 · 5 min read

Booking a ferry is not quite like booking a train or a flight, and the process varies considerably depending on whether you are crossing the English Channel in 90 minutes or setting off on an overnight Baltic cruise. Once you understand how the booking ecosystem works — operators versus aggregators, deck tickets versus cabins, passenger fares versus vehicle fares — it becomes straightforward.

Operators versus aggregators

The first choice is where to book. Almost every major route can be booked directly through the ferry company — DFDS, Brittany Ferries, Stena Line, P&O Ferries, Tallink Silja and the rest all have their own websites. This is often the safest option because you deal directly with the company that owns the ship, and any post-booking changes (cabin upgrades, amendments, cancellations) are handled in one place.

Aggregators such as Direct Ferries, Ferrysavers or Aferry search across multiple operators and routes simultaneously. They are useful when you are not sure which company serves a particular crossing, or when you want to compare a handful of competing routes — say, crossing the Adriatic from Ancona versus Bari. The trade-off is that customer service for changes or problems sometimes passes awkwardly between the aggregator and the actual operator, so read the terms of whichever platform you use.

For Greek island ferries, the booking platform Ferryhopper has become the de facto aggregator for domestic Greek crossings, pulling together Blue Star Ferries, Seajets, Hellenic Seaways and others. It is worth checking for Aegean routes even if you book everything else direct.

What you are actually booking

On short crossings — the Channel, Irish Sea routes, the Stockholm–Helsinki day leg — the ticket is often a straightforward passenger-only or vehicle-plus-passengers fare. On longer or overnight routes the choice becomes more complex:

• Deck or airline-style seat: the cheapest option. You sit or sleep in a chair, sometimes in a reclining "Pullman" seat. Fine for shorter crossings; tolerable overnight if you are on a tight budget and bring a sleeping bag or blanket.
• Couchette or dormitory berth: a basic bunk in a shared cabin. More comfortable than a seat and considerably cheaper than a private cabin. Common on Baltic and Adriatic overnight routes.
• Private cabin: ranges from small inside cabins with two berths to larger outside cabins with a window or porthole. On cruise-ferry routes (Tallink Silja, Viking Line, DFDS) cabins can be surprisingly well-appointed. Book early — the better cabins fill first.
• Vehicle deck space: if you are taking a car, motorcycle or bicycle, this is booked separately from your passenger fare. The vehicle size (and sometimes height, for campervans) determines the cost. See our guide to taking a car on a ferry for what to expect on the car deck.

When to book — and when prices move

Ferry pricing is more seasonal and less dynamic than airlines, but it does move. School holidays and summer weekends command the highest fares on almost every European route. For Baltic crossings in late December, cabin availability around Christmas and New Year can vanish months in advance. The English Channel and Irish Sea routes are fairly liquid — you can often book a week ahead in low season and pay a reasonable fare, but bank holidays and peak summer are best reserved early.

Overnight cabins on popular routes (Stockholm–Helsinki, Copenhagen–Oslo, Italy–Greece overnight) are the scarcest commodity: passenger decks can absorb more people, but the number of cabins is fixed. If a cabin matters to you, book it when you book the rest of the trip.

The vehicle booking process

When you add a vehicle to a booking, you will usually be asked for its registration, make, model and approximate dimensions (length in particular). Get these right — arriving at the port with a vehicle that does not match the booking can cause delays at check-in. Height restrictions matter especially for campervans and high-roofed vans, which may need to book the upper or open deck.

Most operators assign a check-in lane based on your vehicle type. Arrive in plenty of time: vehicle check-in lanes typically close 30–45 minutes before sailing, sometimes earlier on busy routes. Read the check-in time printed on your ticket — it is not the sailing time.

What to watch for in the add-ons

The headline ferry fare can look attractive until the add-ons appear. Common ones include:

• Cabin reservation fees on some routes listed separately from the base passage fare
• Port taxes and fuel surcharges, which may or may not be included in the displayed price
• Pet supplement, if you are crossing with a dog or cat
• Travel insurance add-ons pushed at checkout — compare independently before accepting
• Meal vouchers or dinner packages, which can be good value on overnight routes but are optional

Comparing the final checkout price rather than the headline is the only reliable method.

Cancellations and disruption

Ferries are affected by weather in a way trains are not. In the English Channel, severe gales occasionally cancel sailings, though modern vessels cope with conditions that would have caused disruption a generation ago. The Aegean in winter can be more seriously affected — Greek island ferry schedules thin out considerably off-season, and some routes suspend entirely from October to March or April. Check the seasonal timetable for your route before booking accommodation at the other end.

If a sailing is cancelled by the operator, you are generally entitled to a refund or alternative passage. Keep the operator's contact information and your booking reference accessible on the day of travel.

Frequently asked questions

Is it cheaper to book ferries directly with the operator?

Often, though not always. Direct booking avoids any aggregator service fee, but aggregators sometimes negotiate promotional fares or show options you might not find easily on a single operator's website. Compare both before committing.

How far in advance should I book a ferry cabin?

For popular overnight routes (Baltic cruise-ferries, Italy–Greece, Norwegian coastal) in summer or around public holidays, book two to three months ahead if a private cabin matters. Off-season, a few weeks is usually sufficient.

Can I change or cancel a ferry booking?

It depends on the fare type. Flexible fares typically allow free changes or refunds; fixed fares may be non-refundable or charge a change fee. Always check the specific conditions before paying, and consider travel insurance if your plans might shift.

What happens if my ferry is cancelled?

If the operator cancels the sailing, you are normally offered a refund or rebooked on the next available service. If you have cancelled-for-cause travel insurance it may also cover consequential costs such as accommodation. Contact the operator directly as soon as possible.