This type is the only one of the seventeen that is never seen as a pure type, with the exception of the use of Conversion-like moves and abilities such as Multitype and Color Change. Each other type, besides the Fighting type, has also been paired with the Flying type on at least one Pokémon.
Defensively, the Flying type is useful for its immunity to the common Template:Type2 move Earthquake and its resistance to Fighting. However, the Flying type's weaknesses aren't uncommon and can often offset the benefits of immunity to Ground, especially due to many dual-type Rock/Ground Pokémon. However, most Flying-types have access to Roost, allowing them to restore their health. Flying-types usually have below average defense stats, making them vulnerable to most physical attacks, super effective or not.
There are no pure Flying-type Pokémon. No Pokémon has Flying as its primary type, either.
The lack of pure or primary Flying type Pokémon may refer to the fact that no creature in real life purely or primarly flies, either. Every creature capable of flight in real life can also halt the flight to do other things such as rest or hunt prey.
With the Sky Plate held, the legendary Pokémon Arceus is the only Pokémon capable of becoming a pure Flying-type outside of battle.
Flying is the only type whose immunity can be canceled by an item, the Iron Ball, instead of only via a move.
The Flying type has been paired with every other type, except the Fighting type.
Although Normal is not typically paired up with other types, it is the most common type paired with Flying.
Currently, all Pokémon with a double weakness to Template:Type2 moves are part Flying-type.
Pokémon with Normal/Flying, Water/Flying and Bug/Flying type combinations have been introduced in every generation so far.
Strangely, all types that resist Flying (Electric, Rock and Steel) are weak to Ground and all types that resist Ground ( Bug and Grass) are weak to Flying.
With the introduction of Shaymin's Sky Forme, each generation has introduced at least one part-Flying legendary Pokémon.
There has been a Flying-type Pokémon introduced in every generation whose name begins with the letters M and S.
Several Flying-type moves have nothing to do with the action of flying. Several of them are actually based on what birds can do. Also, the glitch Pokémon Missingno. is of the Bird Type. This may explain why the Template:Type2 is in the coding of the Generation I and II games.