HOUSTON -

Houston's Bush Intercontinental Airport has seen a boom in new international routes and additional frequency on routes already established over the past 12 months.

United Airlines just launched new nonstop service from IAH to Munich, Germany, using its Boeing 767 aircraft. The flight leaves daily at 4:10 p.m. and arrives in Munich at 9:50 a.m. local time the following day. The return flight departs Munich at 9:30 a.m. and arrives in Houston at 2:20 p.m. the same day.

United says it will be able to fill the plane to the popular destination not only with business travelers but with tourists as well. One of the main draws for flights to Munich is the connectivity once on the ground. Lufthansa offers more than 70 flights from Munich and some of the popular destinations for Houston travelers include Rome, Athens, Budapest, Florence, Milan and Venice.

One of the main draws for many USA residents includes BMW World in Munich, bars and restaurants, as well as museums.

However, it's not just United Airlines offering new service at IAH.

Just this week Korean Air launched nonstop service to Seoul, South Korea.

According to Houston Airport system officials, the past 12 months have been the busiest when it comes to adding new international service at the airport since 2004.

Molly Waits in charged with bringing new service to IAH and says it's not just the oil and gas industry that's helping maintain a strong airport.

"We have the largest medical center in the United States and we see visitors as well as their families coming for very specialized care at the Texas Medical Center," Waits said.

And it's medical, oil and tourism that will make our airport system strong for years to come, Waits says.

"There is a lot of global trade, there's a lot of diversity in Houston. The population just demands it and the business population as well as the ethnic population in Houston looks for these markets to be served nonstop," said Waits.

Some of the other cities with new service include Istanbul, Munich and Seoul. And in August Scandinavian Airlines will fly nonstop to Norway.

Airport executives say don't expect this to be the end of the line. More good news and new service is expected to be announced over the coming months.