Get the Best Sportsbook Bonuses and Legal Betting Offers in the USA
FlashscoreUSA, powered by the global leader in live sports scores, helps fans stay ahead of every play — and every betting opportunity. Trusted by millions of sports fans worldwide, Flashscore is now your source for the best sportsbook promotions, exclusive welcome bonuses, and updates from legal U.S. sports betting sites.
All sportsbook partners listed below are licensed and regulated in the United States, offering safe, secure, and verified betting platforms for U.S. players.
Compare the Best Legal Sportsbook Offers (Updated December 2025)
Looking for the top sportsbook bonuses in the USA? We’ve reviewed and verified the best new-user offers from America’s most trusted brands - including bet365, FanDuel, BetMGM, and more. These sportsbooks are available in multiple legal states and deliver excellent odds, live betting features, and competitive welcome bonuses.
Bet $5 & Get $150 in Bonus Bets Win or Lose - It's Never Ordinary at bet365
21+ Gambling Problem? CALL 1-800-GAMBLER. Deposit required. Paid in Bonus Bets. Bonus Bets wager excluded from returns. New customers only. T&Cs, time limits and exclusions apply. Available in: IL, IN, IA, KY, MD, MO, NJ, NC, OH, TN, VA
Bet $5 Get $150 in Bonus Bets if Your Bet Wins!
21+ Gambling Problem? CALL 1-800-GAMBLER. $5 first deposit and winning first bet of at least $5 required to get bonus bets. New Users Only. T&Cs apply. Available in: IL, IN, IA, KS, KY, LA, MD, MO, NJ, NY, NC, OH, TN, VT, VA, WV, WY
Get up to $1,500 Paid Back in Bonus Bet If You Don’t Win Your First Bet
21+ Gambling Problem? CALL 1-800-GAMBLER. New Users Only. VISIT BETMGM.COM FOR T&Cs. Available in: IL, IN, IA, KS, KY, LA, MD, MO, MS, NV, NJ, NY, NC, OH, TN, VT, VA, DC, WV, WY
Bet $30 Get $250 FanCash
21+ Gambling Problem? CALL 1-800-GAMBLER. New customers only. T&Cs Apply. Offer available in: CO, DC, IA, IL, KS, KY, LA, MA, MD, NC, OH, VA, VT, or WY