United Airlines ending its last flight to Africa

United Airlines will stop flying to Nigeria next month, a move that will end the carrier’s only route to Africa.

United currently offers nonstop service to Lagos, Nigeria, from its hub at Houston Bush Intercontinental Airport. But United will discontinue the those flights at the end of June, eventually shifting the Boeing 787 Dreamliner used on the Nigeria flights to add additional frequencies on a route the carrier recently launched between San Francisco and Tel Aviv in Israel.

United’s exit will leave Delta as the only U.S. carrier to offer nonstop service between the USA and Africa.

In a memo to employees, United cited poor financial performance and weakness in the energy sector for ending the route. Both Houston and Lagos are key centers for the oil and energy markets.

“After careful analysis, we have decided to exit the IAH-LOS (Houston Bush Intercontinental-Lagos) route and redeploy the Boeing 787 aircraft where it can capture more profitable demand,” United said in its Wednesday memo. “Our last flights will be June 29 (eastbound) and June 30 (westbound); after that, customers can travel to LOS via our Star Alliance partners.”

“The IAH-LOS route has been underperforming financially for several years,” United added. “Because of its importance to key Houston-based customers, we continued to invest in it; however, the recent downturn in the energy sector has caused these customers to spend less on travel.”