The Ryanair site lists only one bus a day, but has two flights a day. I'm pretty sure that they run a bus to meet each incoming and outgoing planet, but you might want to double-check. I had no problems with the service at all, and it will always wait for you if the plane is late. The only confusion I had is that someone gave me a free ticket, and I stupidly assumed it was a return. I tried to use the same ticket to go back to the airport, and had a few confused words with the driver. I was adamant that my ticket was valid and as we couldn't speak each other's languages he eventually just gave up. Only later did it dawn on me that the person giving me the ticket was an Italian returning from England who was getting a lift from the airport: therefore obviously having bought a return from Verona and used half of it. Doh.
The ticket, if you buy it like any normal person, costs 11 euros one way, and 16 euros return.
If you are arriving to Verona by plane, you can take the cheap Airbus to go to city centre.
The service from Catullo airport to Porta Nuova train station (and vice versa) operates daily, from 5.15 - 6.10 a.m. to 11.10 p.m. with a frequency of 20 minutes. The journey lasts 15 minutes.
you can buy the ticket on board (with no surcharge). It cost 6 Euro one way, you can use also the ticket to take an urban bus form the train station to the city centre or wherever you want.
If you prefer to take a taxi, there is a flat fare. It cost more or less 25 Euros form the airport to the central Piazza Bra.
The city bus system is (since a few years) managed by the same company that runs the buses to the whole province (ATV), but the two systems remain separate for the most.
See the link below to see the lines system and timetables
Tickets are 1.10 euro (since Sept 2010), and can be purchased in most of the tobacco shops, many bars and the company offices. Even the ticket parking machine can issue the tickets, if you park where they are installed (just press the right buttons, or you'll have just a ticket to park a car...).
You can buy even on board, but only from an automatic machine and for 1.20€, so have at least the change.
Beware that the timetable is different on Saturdays and Sundays than in workdays. different lines run on night time, since, more or less, 8 pm to midnight
All the lines are covered by the Verona Card that gives you entrance to most churches and museums.
See one of the modern buses in the picture. A few of the older one are all orange.
Starting from the summer 2008, a well known hop on/ hop off company tourist bus started to cover Verona.
The bus is the usual red double decker with open air top, and being quite big it cannot enter the narrow roads of the ancient city center, but it runs all around it, and being the center not that big, it is ok to see both the center and some of the best hillside surroundings.
Frequency every hour, by now it is planned up to oct 31, 2008... But please do check their site, because being it a new experience here i bet they may change something.
Most of the streets, in the historic centre of the town, are narrow and short but yet in use for certain city bus lines. In my opinion, the great part of the historic centre should be turned into the walking area. Imagine yourself, strolling through out the historic centre and suddenly, all inexpected, big bus or even car after your back!
Public transport in Verona is in the form of buses, some of which are powered by natural gas to reduce pollution.
As a cyclist I have never used these buses, but I'm told the service is frequent and very good.
On this web site you can find the bus timetables to some places not far from Verona; for instance; Venice, Riva del Garda, Lido di Jesolo. Some buses run only in the summer. There is a page about these here. Besides, here there are the timetables of the shuttle bus to the Verona Airport.
Unless you have a lot of energy, you may need to take the bus to the attractions when you arrive at the train station in Verona. At the front of the Porta Nueva train station, take either the 11, 12, or 13 buses to the Arena. From there you can walk to the other sites including the House of Juliet.
The tickets cost 0.93 euros each and is valid for 60 minutes after stamping.