Qatar Airways offers roundtrip international flights from select cities in the U.S. for as low as $808.67, as provided by ShermansTravel. (Click on "" in the main paragraph to see this sale; all taxes are included.) That's tied with our mention from two weeks ago and it's the lowest current price we could find select routes by $91. This price is valid on flights departing from Washington, D.C. (IAD) with arrival in Islamabad, Pakistan, (ISB) on September 7; prices vary depending on the departure cities and dates chosen. Book this travel deal by May 27 for travel through December 31. Other notable fares: