There are more than 15 million seats on sale.
Nine new routes have been added as the full programme became available from several locations.
The operator has a record programme of 343 routes to 46 destinations.
Independent travel agents feedback that their customers want to book well in advance, lock in the price of their holiday now and spread the cost led to the programme being put on sale early.
More than 1,500 weekly flights from ten airports will be operated by Jet2 and Jet2holidays.
There are over 200 a week to the Canary Islands, 200 to the Balearic Islands, and 300 to 14 destinations in Greece.
There will be new flights in the summer of twenty four years.
Bristol is able to offer services to Izmir, Bourgas, Costa de Almeria and Naples.
There are new flights to Crete and Naples from the East Midlands and the other side of the country.
The operator is planning to add a summer programme.
Following the positive response from independent travel agents to seven UK bases going on sale last week, we are very pleased to be adding three more.
Customers want to book in advance as this gives them the chance to lock in their price now, according to feedback from our independent travel agents.
We responded by putting our largest ever summer program on sale now.
With 46 sun destinations on sale across our UK bases, we are supporting our independent travel agents by giving them more choice and flexibility than ever before.
Further details about our exciting cities programme for summer 24 will be revealed soon.