Allegiant Airlines’ Carry-on Size Guide 2025| Baggage rules explained.

Discover Allegiant Airlines’ carry-on size, weight limits, and personal item policy. Learn the do’s and don’ts before you fly. 

Traveling light is a genuine skill, and knowing your airlines’s carry-on size rules can save you time, money, and from last-minute stress. And if you’re flying with Allegiant Airlines, then understanding their carry-on size rules is imperative to avoid unexpected delays and fees. 

Whether you’re a frequent flyer or it’s your first flight with Allegiant Airlines, this guide from Affluence Travels walks you through everything that you need to know. In this blog, we aim to make sure that your entire journey is smooth and hassle-free. Come, let’s simplify your packing checklist so that you can board confidently- no surprises, just smooth travel ahead. 

Allegiant Airlines Carry-on Size: The complete breakdown. 

Wait! Did you check the carry-on size rules before booking your flight with Allegiant Air? No? Well, this may cost you a hefty amount of stress, money, and time. Before you head to the airport, keep an eye on what exactly and how much Allegiant Airlines allows as a carry-on. The standard carry-on bag size that Allegiant Air allows is 10*16*22 inches (including wheels and handles), while the personal item dimension should be 8*14*18 inches, which is free. The carry-on bag should fit in the overhead bin, while the personal item should fit comfortably under the seat in front of you. 

Remember, your baggage fees are not included in the base fare and are often cheaper when purchased in advance online rather than at the airport. Every passenger is allowed only one personal item free of charge. Be very mindful when packing. Allegiant Air is extremely particular and strict about bag sizes. Even a slightly overweight bag may incur additional charges at the gate. 

What counts as a Personal Item on Allegiant Airlines? 

Often, travelers are confused between a carry-on and a personal item. The personal item that is allowed on Allegiant Airlines must be a small bag, such as a purse, laptop bag, or small backpack, which can fit under the seat in front of you. So, to help you get rid of this confusion, here are some key differences to understand what counts and what doesn’t count as a personal item when flying with Allegiant Airlines:

Things that count as a personal item:

• Purse or handbag, which is a small, hand-held bag. 
• Laptop bag or briefcase. 
• Small backpack 
• Camera case 

Things that don’t count as a personal item:

• Anything larger than 8*14*18 inches. 
• Wheeled luggage that can’t fit under the seat.
• Large tote bags or backpacks 

If your personal item fails to fit under the seat, Allegiant will immediately classify that as a carry-on, and you’ll have to pay the fees accordingly. To avoid further embarrassment and surprises, measure your bag before leaving home. 

How strict is Allegiant with its Carry-on Size?

Allegiant Air is very strict with carry-on size, requiring a paid carry-on to be a maximum of 10*16*22 inches and a free personal item to be a maximum of 8*14*18 inches. It enforces its size policies more rigidly than several other full-service carriers. Bags are often checked at the boarding gate. Here’s what the travelers must know:

1.  If your bag doesn’t fit in the overhead bin or size checker, you’ll have to pay extra fares at the gate, which can be higher than the pre-booked prices. 
2. Allegiant doesn’t offer complimentary overhead space-it’s first-come, first-served. 
3. Pre-paying for your carry-on during booking is always cheaper than paying at the airport. 

Use soft-sided luggage or compression cubes to adjust your luggage’s shape slightly if it’s almost near the size limit. 

Carry-on v/s Checked Bags: What’s worth paying for?

Curious to know whether you should stick with a carry-on or pay for checked luggage? Let’s break it down:

Convenience: In terms of convenience, your carry-on bag stays with you when you travel, while a checked bag is collected at the baggage claim. 

Fees: Carry-on bags’ fees vary by route, which can be lower if pre-booked. On the other hand, for checked bags, the fees are often slightly higher.   

Size limit: The carry-on size limit is 10*16*22 inches, while for the checked bag, a maximum of 203 linear inches is allowed, which should not exceed the maximum weight of 18kg. 

Risk of damage/ loss: For carry-on bags, the risk is minimal, while for checked bags, as they are collected at baggage claim, there is a possibility of them getting lost or damaged. 

It is important to note that while checked bags are best for long trips and for carrying bulky items, knowing carry-on size limits helps light packers and travelers going on short trips fly smoothly. Planning to go for a weekend getaway or a short trip, a carry-on is the smarter choice. Just make sure it meets the exact dimensions. 

Tips to fit more in your carry-on. 

Packing light is an important aspect when flying with Allegiant Air. But that doesn’t mean sacrificing the essentials. Here are some smart ways to make the most of your space:

• Roll, don’t fold your clothes. This saves space and prevents wrinkles. 
• Go mini by using travel-sized toiletries and portable bottles to save weight. 
• Use packing cubes to organise items perfectly and compress clothes. 
• Keep all your essentials handy, like documents, chargers, and snacks, in your personal item for easy and quick access. 
• Wear bulky items like jackets, hoodies, or boots to save more space. 

Bonus tip: Measure your carry-on bag at home after packing everything - because it’s easier to adjust earlier than falling into an embarrassing situation at the boarding gate and paying extra fees at the airport. 

Carry-on size restrictions: Avoid extra fees

Allegiant Air’s fee structure for carry-ons depends on when and how you pay. If you pre-book early, you pay less, and the longer you wait, the more you pay. Here’s how to avoid paying more: 

• Pre-book your tickets early as carry-on fees are lowest when added during ticket purchase. 
• Ensure that the carry on size limit is strictly within 10*16*22 inches. 
• Use the personal item as your only bag. 
• Always measure your carry on bag beforehand. 
• Remember the airlines allows only one carry-on item with maximum dimension of 9*14*22 inches.
• It charges fees for carry-on bags exceeding the size limit ranging from $10 - $75.

Allegiant Air use rigid frames for checking sizes of your bags, so even small protrusions from zippers or handles can cause your bag to be flagged as oversized. 

Final thoughts 

Deciding to fly with Allegiant Air can be one of your smartest decisions. This journey can be the most affordable ways to travel across the U.S.- as long as you plan ahead. Knowing everything about the carry-on size requirements, personal item limits, and baggage fees ensures that your journey is stress-free and smooth from takeoff to landing. 

At Affluence Travels, we believe that a great trip starts with a strategic plan. Whether you’re flying for business trips, leisure getaway, or a family vacation, knowing the rules can help you travel smarter and save more time, space, and money. What are you waiting for? Christmas? Fly easy. Save smart. Book your next Allegiant Air flight with Affluence Travels- where great journeys begin.