Aces High.
Well, if there's some hot action available. BI and AKD are tough weeks for me.

Rude's got some of us interested in America's Army. Free download, free play; lots of different maps and missions. Rounds last 10 minutes max, but can be very, very short if the objectives are completed quickly. Some are just a minute or two sometimes. Seven rounds to the match, then the match restarts. Various weaponry, terrains, day, night, sandstorms.. lots of variety.
It ain't flying but it is FIGHTING; LOTS and LOTS of FIGHTING.

Once you get the hang of living for a while and start killing what you shoot at... it can be fun.
But a good air-to-air fight in AH beats the best match in AA..... IMO.
OTOH, every round in AA guarantees fast action which is something often hard to find ...... well, you know.