The Open 2025 Betting Offers: Best Free Bets & Sign Up Deals

The Open Championship explodes into action at Royal Portrush this week, and with Thursday's opening round fast-approaching, now is the ideal moment to make the most of the latest betting offers.

Whether you're looking for free bets, sign-up bonuses, or enhanced odds on the favourites, we've rounded up the top promotions from the best betting sites. Click the links or banners below to claim your offers and get set for an enthralling week of golf in Northern Ireland.

The Open 2025 Betting Offers

Dabble Open Betting Offer

Dabble are giving new customers a no-risk way to get involved in the Open action with a £10 Free Bet and no deposit required.

Alongside all the key Open betting markets, Dabble stands out from the crowd as it gives you the opportunity to copy bets you like, while if someone copies your bet, you get rewarded in cash.

Sky Bet Open Betting Offer

Sky Bet are serving up one of the standout new customer offers ahead of the Open with £30 in free bets unlocked from just a 5p qualifying bet.

Once signed up, you can explore a wide range of markets, including outright winner, first-round leader, and top player by nationality. Sky Bet also roll out regular price boosts, such as Rory McIlroy to win outright at 6/1 from 11/2.

Fans of long shots can also dive into the popular RequestABet section, with options like Scheffler and McIlroy both to go bogey-free in round one at 150/1.

BoyleSports Open Betting Offer

BoyleSports stand out as one of the few bookmakers paying 10 places at 1/5 odds on the Open, offering strong each-way value for golf punters.

They also bring extra appeal with their Acca Boost feature, allowing bettors to increase returns on their golf accumulators. A 3-fold gets a 3% boost, a 7-fold climbs to 30%, and you can earn up to a 100% bonus on a 14-fold acca.

Not on board yet? New BoyleSports customers can claim £40 in free bets by registering and placing a £10 qualifying bet at even-money (1/1) or greater.

Ladbrokes Open Betting Offer

Ladbrokes are another strong option for Open betting, offering 10 places each-way to match the market leaders.

You’ll find all the usual golf markets available - from outright winner to round betting - and if you’re new to Ladbrokes, there’s a £20 free bet offer when you sign up and place a £5 qualifying bet.

Bet365 Open Betting Offer

Bet365 deliver a deep lineup of Open betting markets, covering everything from outright winners and round leaders to player specials and even a hole-in-one at 1/1.

There are plenty of price boosts too, including Shane Lowry at 25/1 from 22/1 to win at Royal Portrush once again following his triumph in 2019 and you can back the trio of Lowry, Rory McIlroy, and Scottie Scheffler at 10/1 to all finish in the top-10

If you've not yet opened an account with bet365, you can get started with their popular 'Bet £10 Get £30 Free Bets' sign-up offer.

CopyBet Open Betting Offer

New UK customers can get involved in the Open 2025 golf action with CopyBet’s welcome offer: Bet £20, Get £20 in Free Bets, plus a daily Profit Boost of up to 15%.

To qualify, place a £20+ bet on a single or accumulator (2+ legs) with minimum odds of 1.9, and ensure it’s settled within 7 days of opting in.

Once your qualifying bet is placed, you’ll receive a £20 free bet to use on any live or pre-match event, including Open markets. The free bet expires in 7 days and has a max payout of £500.

You can also claim a daily Profit Boost - up to 15% extra on winnings from a single real-money bet (max stake £30), valid for 24 hours with a payout cap of £1,000.