Aer Lingus and CityJet are to join together to offer services to and from Dublin and London City Airport.

The agreement builds on CityJet's presence at London City, and further expands Aer Lingus' London schedule.

Aer Lingus will operate six daily round trips from Dublin to London City Airport on weekdays from October 28th.

There will be a reduced service at weekends.

The company says the schedule is to provide "competitive travel options across the day" for passengers travelling on business or for leisure.

The leasing arrangement between the two carriers will see CityJet provide aircraft, crew, maintenance, and insurance to Aer Lingus.

The aircraft will be in Aer Lingus style and configured in single cabin layout.

London City Airport is located just 10km east of central London and 5km from Canary Wharf.

This expansion will enable Aer Lingus to increase its operations between the two capital cities to up to 50 daily flights.

CityJet CEO Pat Byrne (left) and Aer Lingus CEO Stephen Kavanagh | Image: Supplied to Newstalk.com

Stephen Kavanagh, Aer Lingus CEO, says: "We are delighted to be entering into this agreement with CityJet. Aer Lingus is on an ambitious flight path and working with Pat and his team will allow us add to our extensive services to London Heathrow and London Gatwick.

"The Dublin to London City route will facilitate further business flows between Dublin and London and the service will provide those wishing to travel seamlessly from the heart of London City to North America with a very attractive connecting proposition, including US customs and immigration pre-clearance."

While CityJet CEO Pat Byrne adds: "In recent years we have transitioned CityJet from being an airline serving scheduled markets under its own brand into becoming a provider of capacity to customer airlines throughout Europe.

"We are delighted to now add Aer Lingus to our growing list of flying partners.

"CityJet now employs almost 1,300 people and has a fleet of 45 aircraft flying on over 200 routes across Europe".

Dublin-London is the busiest international air route in Europe.

CityJet was one of the first airlines to launch services to London City Airport in 1994.

The Dublin-based airline recently announced it is to merge with the Spanish carrier, Air Nostrum.