2024 NBA Finals sportsbook bonuses & promos: Over $5,000 in bonus bets for Celtics vs. Mavericks Game 3

The 2024 NBA Finals changes venues to Dallas as the Mavericks host the Boston Celtics in Game 3 on Wednesday night. Boston currently holds a 2-0 lead but Luka Doncic will look to get his team back in the series over the next two games.

Read below for information from Caesars, BetMGM and more about their 2024 NBA Finals betting offers. If not in a state with legal sports betting (such as Texas), check out our best DFS offers for Mavs vs. Celtics. 

Best 2024 NBA Finals Promos: Top NBA Betting Sites, Apps & Bonus Offers For Celtics vs. Mavericks - Game 3

Best NBA Betting Promos 2024

New customers can get in on the action (and claim huge bonuses) by registering at any of the top U.S. sportsbooks listed below.

1. Caesars Sportsbook: $1,000 first-bet offer
2. BetMGM Sportsbook: Up to $1,500 bonus
3. BetRivers Sportsbook: Up to $500 second-chance bet
4. FanDuel Sportsbook: Bet $5, get $200 offer
5. Bet365 Sportsbook: $150 bonus or $1,000 safety net
6. DraftKings Sportsbook: $1,200 in total bonuses
7. ESPN Bet
8. Betway
9. Fanatics Sportsbook

Each of the top NBA betting apps have generous welcome bonuses for new bettors. Below, we are breaking down each one and detailing their bonus offers, promotions and more.

• READ: 2024 NBA Finals picks and preview

NBA Finals betting sites 2024: BetMGM, Caesars, DraftKings and more basketball bonuses

All of the top NBA betting apps are complete with odds to win the NBA Finals, as well as many other markets for props. Each site offers a generous welcome offer and ongoing promotions to take advantage of throughout the year.

1. Caesars Sportsbook Enjoy NBA Finals promo code PLAYS1000 offers $1,000 for Celtics vs. Mavericks Game 3 betting

Caesars is another one of the industry’s biggest names and thanks to its ongoing promotions and marketing star-power, it remains popular in each state where it operates.

Caesars Sportsbook promo code PLAYS1000 for the NBA Finals unlocks a huge $1,000 first-bet bonus for all new customers ahead of the last series of the year. 

• Click our Caesars promo links and register for an account.
• Make your first deposit and place your first bet on the sport/game of your choice
• If you fall short, Caesars is going to match any losses up to $1,000 and pay you back with bonus bets.

Bonus bets are added to your account within 48 hours and any bets earned from the Caesars NBA promo remain eligible for 14 days once added to your account.

2. BetMGM bonus code PLAYSPORT for 2024 NBA Finals: Up to $1,500 welcome offer 

BetMGM bonus code PLAYSPORT guarantees access to a first-bet offer up to $1,500. Simply register, make a deposit and place your first bet. If it falls short, BetMGM will match those losses in bonus bets so you can take another crack at profits without risking anything extra funds. 

To qualify for the BetMGM bonus for the NBA Finals, simply click one of our links and follow these steps:  

• Sign up for BetMGM, then make your first deposit of $10 or more.
• Place an opening wager on 2024 NBA Finals odds (or any bet of your choice) at BetMGM.
• If it loses, bonus bets matching your losses (up to $1,500) will be delivered to your account within 24 hours. 

If you do not use one of our codes to reach BetMGM, type PLAYSPORT into the proper section when claiming your bonus. 

Bonus bets cannot be withdrawn and must be used within seven days. Click our BetMGM bonus code links to get started.

Check out this BetMGM Sportsbook review page for more information.

3. BetRivers NBA Finals bonus code RIVSPORTS: Up to $500 back for Celtics vs. Mavericks Game 3

BetRivers Sportsbook houses tons of betting options, a loyalty rewards program and various ongoing promotions for new customers on top of their signup bonus, which involves getting losses paid back up to $500. 

Simply signup with BetRivers bonus code RIVSPORTS for 2024 NBA Finals odds to activate a second-chance bet bonus up to $500 for all new customers. This means that if your first wager falls short, up to $500 will be paid back by BetRivers.

All that’s required is the creation of a new account by clicking on our BetRivers link, or by typing RIVSPORTS into the promo code space if you find the registration page on your own. 

Once you do that, make your deposit and place your first bet. If it loses, get 100% of those losses back up to $500 (depending on location) to try once again.

Register with BetRivers bonus code RIVSPORTS

For the BetRivers NBA promo, qualifying wagers must have odds of -200 or better (-175, +100, etc.). New customers must deposit at least $10 into your new BetRivers account.

Note: Players in IL, IN, LA, MI, MD, PA, and VA qualify for up to $500 back, while the maximum offer in CO and NJ is $250. Those located in AZ, IA, NY, OH, and WV are eligible for a $100 welcome bonus.

4. FanDuel NBA Finals promo offers $200 for a $5 wager on Mavericks vs. Celtics

FanDuel Sportsbook is one of the most popular NBA betting sites every season due to its massive betting menu, ongoing promotions and generous welcome offer. 

The FanDuel promo code for the NBA Finals offers a $200 in bonus bets for just a $5 wager that hits following registration and deposit. 

New FanDuel users can wager on the NBA Finals bet of their choice after registering and making a deposit. If that moneyline bet wins, $200 in bonus bets is coming into your account after that wager settles. That’s +4000 odds on your $5 bet. 

FanDuel Sportsbook welcome bonus bets show up in your account within 72 hours of your qualifying bet and must be used within 14 days of issuance.

Check out this FanDuel Sportsbook review page for more information

5. Bet365 NBA Finals bonus code offers $150 or $1,000 first bet safety net for Celtics vs. Mavericks Game 3 betting

The Bet365 bonus code for the NBA Finals leads to a generous welcome bonus of $150 guaranteed for just a $5 bet. Here’s everything you get:

• $150 in bonus bets following a $5 wager (win or lose) once you sign up and deposit.
• Exclusive promos including bet boosts, parlay bonuses and early payouts.
• Tons of betting markets to choose from including NBA odds. 

Simply register, deposit, and place a $5 bet on any eligible market for basketball. Win or lose, $150 in bonus bets is being added to your account once the wager settles, on top of any potential winnings. 

If bettors don't want to claim the $150 guaranteed, they can also opt for a first-bet safety net up to $1,000. This means that if the first wager is a loss, Bet365 covers those losses with a bonus bet reimbursement up to the maximum amount.

Bonus bets can be broken up into multiple wagers and are eligible for use on any market with a line of -500 or better.

Find more information on this Bet365 Sportsbook review page

6. DraftKings Celtics vs. Mavericks bonus: Multi-part offer worth $1,200 for NBA Finals

DraftKings has a countless number of NBA props and one of the deepest betting menus around, complete with novelty props that can exclusively be found here. 

Registering for the DraftKings NBA Finals bonus before the big games means qualifying for:   

• $50 bonus bet following deposit of just $5
• 20% match on that deposit up to $1,000
• Bet $5, Get $150 instantly
• Access to thousands of NBA betting options

Simply register and make an initial deposit. This will qualify you for the first two parts of the DraftKings NBA bonus. From there, you'll get a Bet $5, Get $150 in bonus bets offer off your first wager.

All bonus bets must be used within seven days of being issued at DraftKings.

2024 NBA Finals Game 3 Preview: Dallas narrowly favored as series shifts 

Boston took the first two games at TD Garden with Jaylen Brown being the team's best player through the first two games, although Jayson Tatum is making his presence felt on the boards and with his assist numbers.

Luka Doncic is carrying the scoring load for Dallas but is not getting enough from the supporting cast, including Kyrie Irving. In Game 3, a desperate Dallas team is favored at home narrowly according to the early spread. 

Underdog DFS promo code BETFPB for NBA Playoff odds: $250 bonus for new customers

Since its launch in 2020, Underdog DFS has offered regular tournaments on a daily, weekly and season-long basis with a draft-based format. The NBA, NFL, PGA, NHL, MLB and more are available for fantasy sports. Entrants can take advantage of pick 'em and battle royale style contests as well.

Our Underdog DFS bonus code BETFPB offers a $250 deposit match to be used on Underdog Fantasy games, and a free pick’em special.

The promotion bonus will be added to your Underdog just for signing up, and will be deposited within 72 hours of your first deposit. There is a 60-day time limit on clearing the bonus. Click on our Underdog bonus code BETFPB to get started.

Underdog NBA Playoff pick ‘em props

Here are some past examples of the pick ‘em props you’ll find at Underdog for the NBA:

• Luka Doncic 6.5 1Q points - Higher/Lower
• Kyrie Irving 24.5 points - Higher/Lower
• Jaylen Brown 7.0 rebounds - Higher/Lower
• Jayson Tatum 0.5 double-doubles - Higher/Lower

You must be over 21 to play. Gambling Problem? Call 1-800-522-4700. 1-800 GAMBLER.