Short-haul ... a possible option for some.
Long-haul ... a farce, and I had noted your caveat! Taking the quoted 6 days each way to NY, which is not where I need to be, I therefore add 2 weeks to my planned [and regular] 3 weeks, and then another 2 days getting from NY>DC and back. My 3 weeks in the DC area is now getting close to 6 weeks away from home.