Didn't know if this has been posted or not, but I thought I'd give some forewarning to prevent someone from getting into the same predicament as myself. I went to Tashkent International at the end of my trip with about 75 USD worth of Uzbek som, thinking I could just exchange it back before my flight. If you've been exchanging on the black market (aka, the bazaar) like everyone else and have not obtained a certificate from an official bank, you will NOT be able to exchange any of your som back at the airport exchange booth. To make matters worse, the few gift shops/duty free stores/cafes that exist in the departures terminal do NOT even accept Uzbek som!
Moral of the story: Exchange all your leftover som back at the bazaar or spend it all before going to the airport, lest you want a fat wad of useless currency as your final souvenir!
