United Airlines will add service to Greenville-Spartanburg, Portland (Maine) and Syracuse from Denver this June, further building on its expansion at the Colorado airport.

The Star Alliance carrier will offer daily service on all three routes, with Greenville and Syracuse operated with 76-seat Embraer 175s and Portland with 150-seat Airbus A320, it says today. The Denver-Portland route will operate seasonally during the summer.

The new routes come as United buoys its schedule in Denver today. The airline is rescheduling its flight banks – periods with a high number of departures and arrivals designed to facilitate connections – in a move that will see its average daily departures jump by 44 flights to 420 compared to February 2018, FlightGlobal schedules data shows.

"As we build on the strengths of our mid-continent hubs, United’s optimised schedule along with the growth in destinations offered and frequency of flights allows us to deliver on what’s best for our customers – more flights and greater access to more of the places they want to go," says Ankit Gupta, vice-president of domestic network planning at United.

The airline has rebanked schedules at its Chicago O'Hare and Houston Intercontinental hubs since 2017, moves that executives say has been boosted margins.

United is in the midst of a mid-continent growth thrust aimed to boost connecting flows and recapture what executives see as the airline's "natural share" of the US domestic market.

In addition to the new routes, the carrier will increase frequencies to Burlington, Fort Myers, Pensacola and Savannah from Denver this summer. All but Fort Myers are new markets from Denver for United this year.

United plans to grow system capacity by 4-6% in 2019, following a 4.9% increase in 2018.

Frontier Airlines flies between Denver and Greenville-Spartanburg, Portland and Syracuse, schedules data shows.

Source: Cirium Dashboard