A bit off subject, but with a large change to a higher altitude, you will notice significantly higher landing speeds, just so that doesn't surprise you. The airplane will have a longer take off roll as well.

The above amazes me everytime I go from near sea level to flying at or above 5000' msl airfields, even though I know to expect it. After flying for a good time at higher field (and density) altitudes and then going to sea level, you can almost "feel" the much thicker air through the performance of the airplane. The actual stall speed is the same for the airplane, but your ground speed will be higher, hence the extended landing and take off distances.

AV8TOR