With September upon us and the move from summer into autumn well in full swing, the month is arguably one of the hottest for promos and bonuses across both casino and sportsbooks in the US.
The NFL season begins in September, which means bookmakers are offering a host of bonus offers for both new and returning customers as the campaign kicks off.
Add in the fact that college football returns, along with early fall casino pushes, September is the month for bettors to take advantage of these superb bonus offers available.
USA sportsbook promotions September 2025
There are a wide range of promotions and bonuses available at US sportsbooks throughout the month of September.
- FanDuel: New users can bet $5 in order to receive $300 in bonus bets if the wager wins. No promo code is required with this offer.
- Fanatics Sportsbook: Users who are new to Fanatics Sportsbook can bet $10 and get up to $100 in FanCash. Additionally, for 10 consecutive days of qualifying $1+ bets, users can get up to $100 back in FanCash each football game day.
- BetMGM: By using promo code FINDERBG150, users can get $150 if they win a $10 bet.
- bet365: New users can receive $300 in bonus bets by wagering $5. A minimum deposit of $10 is required with promo code BONUSFINDER and the bonuses can be claimed regardless if the initial bet wins or loses.
- Borgata: Are offering $100 in bonuses when you bet $20.
- Hard Rock Bet: You can get $150 in bonus bets if you win by wagering $5.
Best USA casino bonuses September 2025
There are also plenty of US casino bonuses available throughout September, especially for regular customers across a variety of outlets.
- Caesars Palace Casino: Get a $10 no-deposit bonus as well as deposit match-up bonus worth up to $1,000! This is our casino bonus offer of the month. Use our link and the code FINDERLAUNCH to activate.
- Bally Casino: This one is for new users, who can get up to a $100 reload bonus on your first deposit, making this an enticing offer indeed. New Jersey users only.
- DraftKings Casino: With a minimum wager of just $5, new users will get 500 free spins. This will work out as 50 spins per day for 10 days and are worth $0.20 each. Furthermore, If your net losses on your first day are at least $5, DraftKings will refund 100% of those losses up to $1,000 in casino credits.
- FanDuel Casino: New users can receive a welcome bonus of $40 in casino bonus credits plus 500 free spins – credited as 50 spins per day – with a minimum deposit of $10. No promo code is required and the offer will automatically be applied to eligible new accounts.
