Canadian carriers Air Canada and WestJet are behind some of the more eye-catching routes starting from and within the Americas region over the coming months.

April will see Air Canada returning to returning to the Singapore market after more than three decades. Flights connecting Vancouver International Airport and Singapore's Changi International Airport will operate four times a week from April 3 using Boeing 787-9 aircraft.

The airline will become the sole operator of nonstop flights between Canada and Singapore after fellow Star Alliance member Singapore Airlines ended its sole route last September.

The sector is one of two long-haul additions to Air Canada’s network over the coming weeks alongside flights connecting Montréal and the Spanish capital Madrid. The year-round service will start on May 10 and see the airline compete with Air Transat’s 4X-weekly seasonal flights.

WestJet will also enhance its long-haul network in May with its first-ever route to South Korea’s capital Seoul. Operations between Calgary International Airport and Seoul Incheon International Airport will be served three times per week, becoming the airline’s second Asia-Pacific destination after Tokyo Narita International Airport.

WestJet will become the third carrier to offer nonstop flights between Canada and South Korea, alongside Air Canada and Korean Air, but it will be the only operator of Calgary-Seoul flights. The launch coincides with the 60th anniversary of the establishment of diplomatic relations between Canada and South Korea.

In the U.S., Delta Air Lines and United Airlines are each growing their transatlantic route maps with additions to Germany, Greece, Ireland, Italy and Portugal. Delta is opening routes from New York John F. Kennedy (JFK) to Munich and Naples, as well as launching flights to Dublin from Minneapolis/St Paul. The latter route will see the SkyTeam alliance member compete with Aer Lingus, which plans to restart flights between the cities after an absence of four years.

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United’s European network includes new additions between Newark and Faro and between Chicago O’Hare and Athens. Flights to Greece’s capital will commence on May 17, operating daily through Aug. 12 using 787-8s. United will become the second carrier to operate nonstop between Chicago and Athens, going head-to-head with American Airlines.

Elsewhere, JetBlue is continuing to expand its transatlantic footprint with new routes from Boston to Dublin and Paris, as well as from New York JFK to Dublin and Edinburgh, while fellow U.S. carrier Frontier Airlines is beefing up its schedule with more than 50 new and returning routes.

In South America, Avianca is opening a new route between Bogotá and Montréal from March 31, operating 4X-weekly using Airbus A320neos, and JetSmart is this month starting its first domestic services in Colombia.

Also in Colombia, Brazilian carrier GOL Líneas Aéreas is launching a fifth-freedom route between Bogotá and Buenos Aires. Service between Sao Paulo Guarulhos International Airport (GRU), Bogotá and Buenos Aires Ezeiza International will initially operate 4X-weekly before rising to daily from July 24.

Other new Americas routes of note are being added by international carriers. German leisure carrier Condor will become the first airline to operate flights between Europe and San Antonio International Airport; Air France is starting a Paris-Phoenix route; Lufthansa and Swiss are growing their North American footprint; and Aer Lingus is making Denver a new point in its network.