By Michael Tedder The airline is reintroducing a number of routes that it hasn’t flown in a while. Earlier this year, United Airlines officially overtook Delta Airlines in terms of flights between the United States and Europe. As noted by Travel Weekly, “This year, United (UAL) – Get United Airlines Holdings Inc. Report is scheduled to fly 3.7 million seats in the U.S.-Europe marketplace, an increase of 12.8% compared with 2019. Meanwhile, Delta (DAL) – Get Delta Air Lines Inc. Report is scheduled to offer 17% fewer seats than it did in 2019, while American (AAL) – Get American Airlines Group …