Best Online Blackjack Bonus Offers and Promotions in 2025

Blackjack is a classic casino card game as popular online as in land-based casinos. It’s an exciting combination of luck and skill that’s now accessible to all, thanks to the best online blackjack bonus offers.

When you join an online casino platform, you may be offered a bonus to explore games like blackjack, roulette, and slots. This allows you to boost your bankroll when you first get started.

Here, we discuss the different casino bonuses and then look at some real-life examples from operators we love and trust. 

Blackjack Online Casino Bonuses

The first blackjack casino bonus you’ll likely encounter is the welcome bonus. When signing up for an account, these generous offers are awarded to new players, a type of ‘thank you’ for joining, which operators use to entice you onto their platforms.

Welcome bonuses often come in multiple parts, the most common being a deposit match, where the operator matches your initial deposit with bonus funds (funds that can be used to play but not withdrawn). 

Many casinos will also throw in a bunch of free spins for you to play on selected slot machines, plus other freebies like loyalty points or login rewards.

It’s not just new players at blackjack online casinos who can enjoy freebies; operators also like to reward returning players with cashback on losses, VIP clubs, reload bonuses, and more. 

FanDuel Casino

FanDuel Casino is the first of the blackjack online casino bonus offers we look at today. A reliable operator, it’s been open since 2009, initially as a daily fantasy sports platform before progressing into full-on sports betting and online casino operations.

When you sign up as a new player at FanDuel Casino, you’ll be rewarded with a welcome bonus of $100 in casino cash after you place your first deposit of $5 or more and wager your first $1. Your bonus must be used to play online casino games like blackjack, and requires just a 1x playthrough in your first 7 days to request withdrawals. 

When you sign up and hit the casino lobby, you’ll find over 40 blackjack games, including video and live casino options. Some offer multi-hand games, others have special bonus rounds and added multiplier possibilities. There are plenty of choices to suit every type of player. 

BetMGM Casino

Next up is BetMGM Casino, which you’ll likely recognize as the brand that hosts the MGM Resorts, including Las Vegas’ famed Bellagio, known for its captivating fountains. BetMGM Casino is a popular online platform in the US backed by this prestigious brand, and it has access to exclusive live-hosted versions of blackjack streamed directly from the casino floor. 

The welcome bonus at BetMGM is awarded in two parts: first, you receive a one-off $25 payment in bonus funds for signing up and verifying your account. Then, on your first deposit of $10 or more, you’ll receive a 100% deposit match up to a whopping $1,000 in casino cash. 

Like with the FanDuel offer, your bonus must be wagered before you can claim any winnings, but the playthrough in this instance is 15x the bonus, which must be satisfied within 30 days of claiming the offer. 

BetRivers Casino

BetRivers Casino is another favorite with the team here at YouBet.com, offering a cashback welcome bonus for new players when you sign up with bonus code CASINOBACK. 

Cashback is when an operator gives you a percentage of your losses from a set period back as casino cash, almost like a commiseration prize to lessen the blow. In the case of BetRivers, the cashback is capped at $500 and applies to losses incurred in your first 24 hours of play. 

In the BetRivers lobby, you’ll find some 30+ blackjack titles, giving you plenty of opportunities to beat the dealer. 

Boost Your Blackjack with Online Casino Bonuses

The bonus offers don’t end with the online casino operators above; they are a mere taster of your options for finding blackjack online casino bonuses. 

Learn more tips and get the latest casino news from our online casino team at YouBet.com today.