By Air
The nearest airport to the Alwar city is Delhi airport, which is about 163 kms away. One can catch a bus or a train to Alwar from Delhi. The service is frequent and you can reach the city in no time. 
By Railways
Railway network connects Alwar with Delhi, Jodhpur,
Mumbai and other important cities of India. Shatabdi Express and
Superfast Express between New Delhi and Ajmer go through the Alwar
railway station. Also, there is Intercity Express, which connects Delhi
Sarai Rohilla, Alwar & Jaipur and Mandore Express that connects
Delhi Sarai Rohilla, Alwar and Jodhpur.
By Road
There is a
regular bus service between Delhi and Alwar. The buses operate between
Delhi, Alwar, Sariska, Bharatpur, Deeg, Jaipur and many other key cities
of Rajasthan. Also, you can hire a cab of your own, if you want to make
stops in between your journey.