Braniff flies the Concorde between Dallas-Fort Worth and Washington. D.C., at just under the speed of sound (Mach 0.95 or 650 mph). This is the first and only Concorde service within the United States. From Washington the Concorde continues on to London or Paris at twice the speed of sound (Mach 2.0 or 1,350 mph). This is the only same-day service from mid-America to Britain and Europe.