What is the farthest commercial flight on a B737-800 currently? Can anybody name the airline, distance and respective city pair of the farthest (not necessarily longest) nonstop flight on a Boeing B737-800 (currently or in the past)? I'm not interested in empty delivery or ferry flights, but in revenue, commercial flights with this aircraft type.
I believe this is GOL's Orlando->Brasilia flight at 3,778 miles. Prior to that it was Newburgh to Bergen at 3,456 miles. 

Lufthansa has a 737-700 but it is a Boeing Business jet equipped with extra fuel tanks and only 86 seats which makes a Frankfurt to Pune 4,158 mile flight. 

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