Lamar Odom: Looking Good for Cross Country Flight with Khloe Kardashian

Lamar Odom's miraculous recovery is going so well ... he was able to board a private jet with still-wife Khloe Kardashian.

The estranged, yet super close couple boarded their flight at Van Nuys Airport in L.A. just before 9 PM -- most likely bound for NYC, where most of the Kardashians are gathering for Kanye West's big album release concert Thursday night.

This is the best look we've gotten of the ex-NBA star since he was at death's door a few months ago, and the pics are amazing proof of what TMZ first reported -- that Lamar's cognitive function and speech have almost fully recovered.

Of course, Khloe moved LO into a house near her to continue nursing him back to health. She's said their relationship is not at all romantic now.

L.A. to NYC is a long flight though. Just sayin'.