As mentioned, dire bats come to mind. More than this though, the following from the MM1 could work as flying mounts:
Pegasus- a classic heroic mount, though somewhat offensive options of its own, it still gives the rider the ability to fly around the battlefield, something which is invaluable to any archer. (See the story of Bellerophon and the Chimera)
Chimera- Speaking of which, assuming one can be tamed or adequately magically compelled, Chimera don't make bad flying mounts. For a archer rider, I would recommend one with either a blue or black dragon head, as these have line breath weapons, which will be far more useful at long ranges than the cone breath weapons, as you are hopefully not surrounded by foes either.
Giant Owl- A heavier alternative to a dire bat, best used for nighttime operations.
Giant Eagle- Similar heavier alternative. Best used for daylight operations. Notably for its high spot bonus, making it good for scouting. Dire Eagle could be used to similar effect.
Dragon- Via the Dragon Cohort feat. Can cast sorcerer spells, has breath weapon, and a notably cool factor. Has a high ECL, however, making dragons large enough to ride reserved for smaller characters and/or very high leadership scores.
Wyvern- Not quite as cool as a dragon (still pretty cool though), but can be gained either through the Dragon Cohort or through Handle Animal (assuming one has the Dragon Trainer feat).
Half-Dragon- Admittedly a template rather than a mount, any of your normal large or already flying animal mounts can be made significantly more dangerous via this template and the Dragon Trainer feat. The strength bonus helps flying mounts in particular, since it allows them to carry more of your gear. Plus, I'd imagine riding a half dragon dire rhinoceros would be pretty cool.
Zelekhut Inevitable- This is a stretch, not only convincing one to travel with you, but convincing it to let you ride it (magical compulsion might work, but hat might not endear one to the forces of law). IF this can be accomplished, however, you have a self-healing construct mount that can fly, possesses a number of quite helpful at will spell like abilities, two electrical spiked chain attacks, and three feats to work with. (Plus a note of hilarity, which is always nice.)
Lammasu- Similar problems occur here, given they are purported as being noble champions of good, and thus unlikely to assent to you riding them. Assuming this (significant) obstacle can be overcome, they have spell casting as 7th level cleric, meaning they provide a good source of healing and effects for their ride and party. They also happen to be in possession of some decent spell-like abilities, especially if escape is required. Further, its combat abilities tend to make it better for melee focused riders, but could still work as the mount for a ranged character.
Spider Eater- If one can be trained (they are magical beasts), you have a mount with a paralysis attack, automatic freedom of movement, good flying maneuverability.
Griffon- Its abilities make it better for a melee rider, but its ability to fly and sturdier build make it a good choice (assuming one can train one) for a ranged rider.
Hippogriff- Sort of a "griffon light", the hippogriff falls somewhere between the griffon and the giant eagle, not being nearly as effective in melee combat as the Griffon, and lacking the scouting capacity of the giant eagle, but is relatively cheap on the market, and doesn't do a terrible job of being a nice mix of the two aforementioned mounts, especially at low levels.
Manticore- An fairly effective mount for a ranged character, assuming its lawful evil nature can be reconciled. The tail spikes allow it to attack consistently from range, in concert with with ranged attacks of its rider (although it can only fire 24 such spikes per day).
Nightwing- Unless you are undead, and probably even if you are, do not attempt this. Granted it has a number of good spell-like abilities, and can summon more undead, but the process of attempting to attract a creature of pure malice and hatred of anything living to one's service would be hard enough for an undead rider, much less a living one. Best to be left alone, or killed if no other option exists.
Ravid- Only for small riders, and assuming it could be convinced to do so, this would be a rather hilarious mount, as one is essentially riding a silvery one-armed dragon snake with any number of random animated chairs, tables, carpets, or other objects following them around. Given its low HP and reflex save, however, this might be more trouble than it's worth.
Roc- The "greater" giant eagle, the roc lacks some of its smaller cousin's spotting abilities, but is two size categories larger, significantly stronger, and significantly more dangerous. While it lacks some of the fancy spell-like and supernatural abilities of other mounts, it can be trained like an animal (albeit one with 18 HD) and can be selected as a druid's animal companion for 16th level. (If I'm not mistaken) Plus, riding a giant bird that eats elephants for dinner has a certain cache to it.
Sphinx- Any of these could make decent mounts, assuming they could be properly convinced/compelled. (Likely easier than a Lammasu or god forbid, inevitable) Of these, the Androsphinx would generally be your best bet, since it can cast cleric spells similar to the Lammasu, and can potentially paralyze or deafen all foes within 250ft., and potentially scare away any within 500ft. Gynosphinxes similarly would be bad choices, given their plethora of spell-like abilities, but lack some f the power and versatility of the Androsphinx. Note that the noble mindset of the sphinx would generally make them more than a little adverse to carrying a rider.
Yeth Hound- Generally not a great choice, since they would only generally be effective at low levels, and their status as a outsider makes them rather difficult to get to.
Granted this list isn't terribly expansive, and doesn't go into much statistical detail, but I hope it helps.