Best MLB Betting Promos & Sportsbook Bonus Codes | March 2025

Baseball season is here, and it’s time to take advantage of the best MLB betting promos for 2025. You can claim thousands of dollars in bonus offers right now. All you have to do is sign up and create a new account at some of the top-rated online sportsbooks in the U.S. today!

In this guide, we’ll introduce you to some of the most valuable MLB betting bonuses you’ve ever seen. I’m talking Bet & Get offers, no-sweat bets, odds boosts, and so much more. Continue reading as we break down the best sportsbook promotions for baseball, explain how they work, and cover the steps for how to cash in on them right now. Let’s get started!

---

Best MLB Betting Promos & Baseball Bonuses

Most MLB betting sites offer special welcome bonuses to attract new users during baseball season. Unfortunately, not all offers are created equal. Some provide more value than others, and some are not even worth the time you’d spend signing up.

To help you out, our team at ATS.io has done the legwork and provided a list of the best (and most valuable) MLB sportsbook promotions and bonus codes for the 2025 season. Check them out!

MLB Betting Site ⚾	Bonus Offer 🎁	Promo Code 🎉
FanDuel Sportsbook	Bet $5, Get $200 in Bonus Bets if Your Bet Wins	Click To Claim
Bet365	Bet $5 Get $150 In Bonus Bets (& 50 Spins PA Only)	ATSBONUS
BetMGM Sportsbook	Up To $1500 in Bonus Bets Back if your First Bet Does Not Win	ATSBONUS
DraftKings Sportsbook	Bet $5, Get $150 in Bonus Bets Instantly	Click To Claim
Caesars Sportsbook	Bet $1, Double Your Winnings Your Next 10 Bets​	ATSBONUSDYW

---

Reviewing the Top 5 MLB Sportsbook Promo Codes

As we mentioned in the previous section, the top 5 MLB betting bonuses come from the following sportsbooks:

1. FanDuel
2. Bet365
3. BetMGM
4. DraftKings
5. Caesars

Let’s take a closer look at each platform’s welcome offer and see what makes them so valuable to baseball fans across the country.

FanDuel

• ⚾ MLB Sign Up Bonus: Bet $5, Get $200 in Bonus Bets if Your Bet Wins
• 🎁 MLB Promo Code: Click To Claim
• 🌍 Legal States: AZ, CO, CT, IL, IN, IA, KS, KY, LA, MA, MD, MI, NC, NJ, NY, OH, PA, TN, VA, VT, WV, WY

FanDuel Sportsbook is now offering a special “Bet $5 Win $150” promotional to baseball bettors this season. Here’s how it works:

Sign up today at FanDuel and wager $5 or more on any MLB betting market (moneylines, run lines, totals, player props, etc.). Then, if your initial $5+ wager is a winner, you’ll receive $150 in bonus bets. It’s really that simple! No FanDuel Sportsbook promo code is needed.

And you know what makes it even better? There’s no minimum odds requirement for the sportsbook’s MLB sign-up offer. This means you can place your first bet on a heavy favorite to increase your chances of unlocking the full $150 bonus. How great is that?

Bet365

• ⚾ MLB Sign Up Bonus: Bet $5 Get $150 In Bonus Bets (& 50 Spins PA Only)
• 🎁 MLB Promo Code: ATSBONUS
• 🌍 Legal States: AZ, CO, IA, IN, KY, LA, NC, NJ, OH, PA, VA

bet365 is offering another great “Bet & Get” offer for MLB fans across the U.S. If you sign now using our exclusive bet365 Sportsbook promo code “ATSBONUS” and wager $5 or more on any baseball game (or another betting market of your choice), you’ll instantly get $100 in bonus bets.

This is different from FanDuel’s MLB betting promotion where your qualifying bet must win to unlock the bonus reward. With bet365’s latest promotion, you’ll receive the full $100 bonus amount no matter what. Win or lose.

BetMGM

• ⚾ MLB Sign Up Bonus: Up To $1500 in Bonus Bets Back if your First Bet Does Not Win
• 🎁 MLB Promo Code: ATSBONUS
• 🌍 Legal States: AZ, CO, IN, IA, IL, KS, KY, LA, MD, MI, NC, NJ, OH, PA, TN, VA, DC, WV, WY

Next up, we have BetMGM Sportsbook and its exciting offer for baseball fans! Here’s how it works:

Sign up today using our exclusive BetMGM promo code “ATSBONUS” to unlock one of the following deals:

• $1,500 First Bet Offer: Get paid back up to $1,500 in bonus bets if your first wager doesn’t win.
• Bet $5 Get $150 Promo: Bet just $5 to receive $150 in bonus bets if your first wager wins.

BetMGM Sportsbook’s $1,500 first-bet insurance promotion is currently available to new customers in Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Mississippi, Ohio, Tennessee, and Wyoming.

Meanwhile, the Bet $5 Get $150 offer is available in Arizona, Colorado, Massachusetts, Maryland, Michigan, North Carolina, New Jersey, Pennsylvania, Virginia, Washington D.C., and West Virginia.

DraftKings

• ⚾ MLB Sign Up Bonus: Bet $5, Get $150 in Bonus Bets Instantly
• 🎁 MLB Promo Code: Click To Claim
• 🌍 Legal States: AZ, CO, CT, DC, IN, IA, IL, KS, KY, LA (select parishes), MA, MD, ME, MI, NC, NJ, NY, OH, PA, TN, VA, VT, WV or WY

If you haven’t found the perfect MLB betting promotion just yet, perhaps the DraftKings Sportsbook bonus code is exactly what you’re looking for.

When you register today at DraftKings, you’ll get to take advantage of their “Bet $5 Get $150” welcome offer. It works a lot like the deal provided by BetMGM, except in this case, your initial $5 bet doesn’t have to win. The $150 bonus is awarded either way, win or lose.

To recap, just sign up and bet $5 on baseball using the DraftKings Sportsbook app. Then, you’ll receive six bonus instantly. It only takes a minute and gives your bankroll a much-needed boost right from the start.

Caesars

• ⚾ MLB Sign Up Bonus: Bet $1, Double Your Winnings Your Next 10 Bets​
• 🎁 MLB Promo Code: ATSBONUSDYW
• 🌍 Legal States: AZ, CO, DC, IA, IL, IN, KS, KY, LA, MA, MD, MI, NC, NJ, NV, NY, OH, PA, TN, VA, WY, WV

Last but not least, Caesars has a special deal for MLB betting during this season. And it’s a bit different from the other offers we’ve talked about in this guide. Let’s break it down:

Sign up now using our exclusive Caesars Sportsbook promo code “SMARTBONUS1000” and bet just $1 on baseball. Then, you’ll automatically unlock ten (10) 100% profit boosts, with a maximum wager amount of $25 per boost.

Each 100% profit boost will double your potential winnings on the bet it’s applied to, giving you lots of extra value as you get started on the platform.

---

How We Rank the Best MLB Betting Promos

Not all MLB sportsbook promos are created equal. Some give you real value, while others come with strings attached that make them pretty difficult to turn into real money.

That’s why our team at ATS.io considers many different factors before recommending any particular offers to our readers. Here are a few things we look at:

• 💰 Bonus Amount: Of course, we would always like the bonus to big. I mean…would you rather have $5 or $100?
• 📜 Fair Terms & Conditions: Have you ever claimed a sign-up bonus only to realize the terms and conditions make it a lot less valuable? Yeah, we hate that too. Our team of experts always checks for reasonable wagering requirements, expiration dates, and any other hidden restrictions/limitations that you should be aware of.
• ⚡ Ease of Use: The best MLB betting promos should be easy to claim and use. You shouldn’t have to jump through too many hoops just to unlock your rewards.
• 🌎 Availability & Eligibility: Some baseball betting promotions are only available in a handful of states. As a result, we make sure to clarify where each offer is currently available and who qualifies for it.
• 🔁 Ongoing vs. One-Time Offers: Some sportsbooks have great sign-up bonuses, but very few (or no) ongoing promotions for existing users. We prefer MLB betting sites that continue rewarding players with daily odds boosts, loyalty rewards, no-sweat bets, and other valuable offers.

By considering these factors, we always make sure you’re only getting the best MLB betting promos out there. No fluff, no gimmicks! Just real value to boost your bankroll this baseball season.

---

Common Types of MLB Sportsbook Bonuses

New to sports betting? Or at least the bonus part of it? Don’t worry! We’ve got you covered. Here are a few of the most common types of MLB betting promotions that you’re likely to encounter:

Bet & Get

These are one of the most popular sign-up bonuses at baseball betting sites and apps. Here’s how it works: you place a small qualifying wager (usually just ~$5 or so), and the sportsbook gives you a certain amount of bonus bets—typically much more than the amount you bet in the first place.

Odds Boosts

Odds boosts, on the other hand, increase your potential payout on a certain type of bet, giving you a chance for a bigger reward with no extra risk involved. For example, a sportsbook may boost a player’s home run odds from +200 to +300, meaning you’d win more money for the exact same bet.

Insurance

Also known as “no-sweat bets,” insurance promotions provide a safety net in case your wager isn’t successful. They’ll typically provide a 100% refund in site credit (aka bonus bets) if you lose.

For example, DraftKings commonly offers a no-sweat same game parlay promotion during the MLB season. You build a SGP with 3+ legs included and minimum odds of +400 or longer. If it wins, enjoy your boosted payout. If it loses, you get the full amount back in bonus funds.

Refer A Friend

Finally, most MLB sportsbooks offer a referral bonus when you invite friends to sign up. Your friend just needs to sign up using your account’s unique referral link (or code) and make their first deposit. Then, you’ll both typically get a bonus bet. FanDuel does this, and their referral bonuses are usually $50 each.

---

How To Use an MLB Betting Promo Code

Using a promo code to claim your sign-up bonus during baseball season is quick and easy. Here are the steps you’ll normally need to take:

1. ⚾ Choose a Sportsbook: First, pick an MLB sportsbook that operates legally in your home state and provides a generous welcome offer to all new users. You can check out our list at the top of the page to find some of the best options available right now.
2. 📝 Sign Up for an Account: Click the sign-up button on the betting site (or app). Then, enter some of your personal details (name, email, date of birth, etc.) as requested. Make sure to use accurate information; this way, they can verify your account right away.
3. 🎟️ Enter the Promo Code (If Required): Some sportsbooks will require you to enter a special promo code or bonus code during the sign-up process or when making your first deposit. When necessary, you can copy and paste the codes that we’ve provided in the table further up the page.
4. 💰 Make a Qualifying Deposit: Most MLB betting promos will require a minimum deposit to activate. For example, if the offer is “Bet $5, Get $200,” you’ll need to deposit at least $5 or more.
5. 📊 Place Your First Bet: Follow any of other terms associated with your MLB betting bonus. Using the same example of a “Bet $5 Get $200” promotion, you would need to wager $5+ on an eligible market to unlock your rewards.
6. 🎉 Claim Your Bonus: Now, you’re good to go! After meeting these requirements, you’ll receive your bonus bets (or other rewards like odds boosts, depending on the offer). Just remember that most promotions come with an expiration date, so make sure to use it before you lose it.

---

States With Legal MLB Sportsbook Bonus Offers

To claim an MLB betting bonus, you must be physically located in a state where online sports betting is legal. As it currently stands, there are 31 U.S. states that meet this requirement (as well as Washington, D.C.). They include:

• Arizona
• Arkansas
• Colorado
• Connecticut
• Delaware
• Florida
• Illinois
• Indiana
• Iowa
• Kansas
• Kentucky
• Louisiana (55 of 64 parishes)
• Maine
• Maryland
• Massachusetts
• Michigan
• Mississippi
• Missouri
• Nevada
• New Hampshire
• New Jersey
• New York
• North Carolina
• Ohio
• Oregon
• Pennsylvania
• Tennessee
• Vermont
• Virginia
• Washington, D.C.
• West Virginia
• Wyoming

If you live in a state that is not listed above, I’d encourage you to take advantage of the latest Fliff Promo Code.

Fliff is a social sportsbook that operates legally in nearly all U.S. states, offers prediction markets on the MLB and many other popular sports leagues, and gives you a chance to win real cash prizes through sweepstakes-style promotions.

Oh, and they’re currently offering a 100% match on your first purchase. So, don’t miss out!

---

Why Do Sportsbooks Offer Baseball Betting Promos?

When I first started betting on the MLB and other popular leagues, I was a bit skeptical of all the bonuses that major sportsbooks were handing out. I figured there had to be some sort of catch I wasn’t seeing.

I mean, why would a sportsbook just give me more money to wager (like with bonus bets) or increase my potential payout (like with odds boosts). But eventually, I figured out what’s really happening, and it made a lot more sense.

Online sportsbooks offer MLB betting promos for one simple reason: competition. There are lots of different betting sites out there, and they are all fighting for your attention.

A huge sign-up bonus is a good way to get you in the door initially, and daily odds boosts (for example) will usually keep you coming back to bet throughout the season.

It also has to do with engagement. The baseball season is long (162 games, to be exact), and games are being played almost every day. As a result, betting sites will use promotions to keep bettors active.

Ultimately, sportsbooks aren’t just handing out money for free. They know that once you start betting, you’ll likely stick around and place more wagers. But if you play it smart and take advantage of the offers that actually provide real value, these MLB betting promos can give you an edge over the long run.

---

Swing for the Fences: Claim the Best MLB Betting Bonuses!

In conclusion, MLB betting promos are a great way to get more bang for your buck.

Extra bonus bets at sign up and daily odds boosts (along with many other types of deals) can provide a whole lot of extra value over the long run. The key is to shop around and find the deals that offer real value by carefully reading the terms and conditions.

In other words, don’t just settle for the first baseball-related bonus offer you see. Sign up with a couple different sportsbooks so you can pick and choose which deals are worth your time and money.

With the right approach, these promos can help you stretch your bankroll and make the MLB season even more exciting (and hopefully profitable).

Anyways, thanks for stopping by! Feel free to sign up at any of the sportsbooks we’ve mentioned today and claim their latest baseball betting bonuses if you’re interested. Enjoy the season!

---

MLB Betting Promos FAQs – Your Questions Answered