I was able to book a flight to Asia using the old British Airways miles (pre Avios devaluation of November 2011). Before the devaluation, a round-trip business class flight from North America to Asia on Cathay Pacific costs only 100,000 miles. The same round-trip business class flight on Cathay Pacific from JFK to HKG would now cost you 140,000 miles using the British Airways Avios program.
I was booked on CX845, which left JFK very late at night and would land in Hong Kong around 4:00 AM. We would be in the air for about 15 hours. The equipment used for this flight was the Boeing 777-300ER. Because I was flying business class, I was able to relax in the lounge before my flight. I left the lounge when the boarding announcement was made but when I got to the gate, the boarding process hadn’t started yet. After a short while on line we were able to board the plane.