The odds of winning a side bet in Blackjack depend on the specific type of bet being placed. Side bets like Perfect Pairs and 21+3 tend to have varying odds, with winning chances generally ranging from about 4% to 25% depending on the bet. These side bets often come with higher house edges, typically between 3% and 7%, which makes them less favorable for players compared to the main Blackjack game. Insurance, a common side bet on whether the dealer has a Blackjack, has odds of around 30% to win but comes with a relatively high house edge of about 7.4%. Payouts for side bets can be much higher than the main game (sometimes up to 200:1), but the increased house edge makes them a less profitable option in the long run.