Flew IST:FRA:DEN Flew Istanbul (IST) to Frankfurt (FRA). 1,140 mi on United Airlines in 3h, 05m. Flew Frankfurt (FRA) to Denver (DEN). 5,023 mi on United Airlines in 10h, 25m. Shortlink:Share this:Click to share on Twitter (Opens in new window)Click to share on LinkedIn (Opens in new window)Click to share on Pocket (Opens in new window)Click to print (Opens in new window)Like this:Like Loading... Similar Entries