Flying with Allegiant Air can be affordable, but only if you understand the baggage rules before you reach the airport. Allegiant keeps base fares low, but bags are charged separately unless they qualify as a free personal item.
The most important rule is simple: the Allegiant personal item size is 8 x 14 x 18 inches. Your personal item must fit completely under the seat in front of you. If your bag is larger than the allowed Allegiant personal bag size, it may be charged as a paid carry-on bag at the airport or gate.
This guide explains Allegiant personal item size, Allegiant free bag size, Allegiant carry on size, checked baggage limits, baggage fees, and smart ways to avoid extra charges.
Quick Answer: What Is the Allegiant Personal Item Size?
The Allegiant personal item size is 8 x 14 x 18 inches. This includes handles, wheels, side pockets, and any outside attachments. The bag must fit under the seat in front of you.
Here is the quick baggage size chart:
| Allegiant bag type | Size limit | Fee |
|---|---|---|
| Personal item | 8 x 14 x 18 inches | Free |
| Carry-on bag | 10 x 16 x 22 inches | Paid |
| Checked bag | Under 80 linear inches | Paid |
| Checked bag weight | Under 50 lbs | Paid |
| Overweight bag | 51–70 lbs | Extra fee |
| Heavy overweight bag | 71–99 lbs | Extra fee |
| Oversized checked bag | Over 80 linear inches | Extra fee |
So, if you are searching for the personal item size Allegiant allows, the answer is 8 x 14 x 18 inches.
What Is the Allegiant Baggage Policy?
The Allegiant baggage policy is based on a pay-for-what-you-use model. Every passenger gets one free personal item, but carry-on bags and checked bags usually cost extra.
Here is what Allegiant usually allows:
- One free personal item that fits under the seat
- One paid carry-on bag that fits in the overhead bin
- Paid checked bags with size and weight limits
- Extra charges for oversized or overweight bags
- Free carriage for certain assistive devices, strollers, and child safety seats
This means Allegiant airlines can be very budget-friendly if you pack light. But if you add a carry-on, checked bag, seat selection, and airport baggage fees, the final cost can become much higher than the base fare.
What Counts as a Personal Item on Allegiant Air?
A personal item on Allegiant Air is a small bag that fits under the seat in front of you. It is different from a carry-on bag because a carry-on goes in the overhead bin and usually costs extra.
Common Allegiant personal item examples include:
- Small backpack
- Purse
- Laptop bag
- Briefcase
- Camera bag
- Small tote bag
- Food container
- Portable electronic device bag
Your bag must stay within the Allegiant personal bag size of 8 x 14 x 18 inches. The full outside measurement matters, including pockets, straps, handles, wheels, and decorations.
If you carry a soft backpack, do not overpack it. A backpack may look small when empty but become too bulky once filled with clothes, chargers, snacks, and travel items.
Allegiant Free Bag Size: What Can You Bring for Free?
The Allegiant free bag size is 8 x 14 x 18 inches. This is the only baggage item included for free with a basic Allegiant ticket.
Your free bag must:
- Fit under the seat
- Stay within 8 x 14 x 18 inches
- Not block the aisle or legroom area
- Be small enough to store without forcing it under the seat
Good Allegiant free bag options include:
- Slim laptop backpack
- Small purse
- Compact tote bag
- Camera bag
- Small school backpack
- Soft travel pouch
- Food container bag
Avoid using a large duffel bag, roller bag, weekender bag, or hiking backpack as your free personal item. These bags may exceed the Allegiant free bag size and could be charged as carry-on baggage.
[Internal link suggestion: Add link on “Allegiant free bag size” from any Allegiant flight booking or airline deals page.]
Is Allegiant Strict About Personal Item Size?
Yes, Allegiant can be strict about personal item size, especially at the airport and boarding gate. Your personal item must fit completely under the seat and meet the Allegiant required size limit.
If your bag is too large, Allegiant may treat it as a paid carry-on bag. This can lead to extra Allegiant Air baggage fees, especially if you wait until the airport or gate to pay.
To avoid extra charges:
- Measure your bag at home
- Include handles, wheels, and pockets in the measurement
- Avoid overstuffing soft bags
- Use a small backpack instead of a large travel bag
- Buy carry-on baggage early if you know your bag is too big
Allegiant’s personal item rule is simple, but it is easy to break if you pack too much.
Allegiant Carry On Size: What Is Allowed?
The Allegiant carry on size is 10 x 16 x 22 inches. This measurement includes wheels, handles, pockets, and decorations.
A carry-on bag must fit in the overhead bin. Unlike a personal item, a carry-on bag is not usually free on Allegiant. You normally need to pay for it during booking, after booking, during check-in, or at the airport.
Here is the difference:
| Bag type | Where it goes | Size limit | Free or paid? |
|---|---|---|---|
| Personal item | Under the seat | 8 x 14 x 18 inches | Free |
| Carry-on bag | Overhead bin | 10 x 16 x 22 inches | Paid |
If you need more space than the Allegiant personal item size allows, buying a carry-on bag during booking is usually better than paying later at the airport.
Can You Bring a Backpack and Carry-On on Allegiant?
Yes, you can bring a backpack and a carry-on on Allegiant if the backpack qualifies as your personal item and the carry-on bag is paid for.
For example:
- Small backpack under the seat: free personal item
- Roller bag in overhead bin: paid carry-on
But if your backpack is too large to fit within the Allegiant personal item size, it may not count as a free bag. In that case, it may be treated as a paid carry-on.
This is why many travelers use a small backpack as the free personal item and pay for a carry-on only when they need extra space.
Does Allegiant Allow a Free Carry-On Bag?
No, Allegiant does not usually include a free carry-on bag with a standard ticket. Allegiant allows one free personal item, but carry-on bags are normally paid.
Your free personal item must fit under the seat. Your paid carry-on must fit in the overhead bin.
A carry-on may be useful if you are carrying:
- Extra clothes
- Shoes
- Travel-size toiletries
- Electronics
- Jackets
- Work items
- Items that do not fit in a small backpack
If you need a carry-on bag, add it online as early as possible. Allegiant baggage fees are usually lower when purchased before the airport.
Allegiant Checked Baggage Size and Weight Limits
If a personal item and carry-on are not enough, you can add checked baggage to your Allegiant flight. Checked bags are stored in the aircraft cargo area and collected after arrival.
Allegiant checked bag limits:
| Checked bag rule | Limit |
|---|---|
| Maximum size | Under 80 linear inches |
| Maximum standard weight | Under 50 lbs |
| Overweight range | 51–70 lbs |
| Heavy overweight range | 71–99 lbs |
| Bags 100 lbs or more | Not accepted |
Linear inches means:
Length + Width + Height
For example, if your bag is 30 inches long, 20 inches wide, and 10 inches high, the total is 60 linear inches.
The checked bag must stay under 80 linear inches and under 50 lbs to avoid extra overweight or oversized baggage fees.
Allegiant Air Baggage Fees
Allegiant Air baggage fees depend on your route, travel date, and when you buy the bag. In general, baggage costs less when added during booking and costs more if you wait until the airport.
Typical Allegiant baggage fee pattern:
| Bag type | Fee type |
|---|---|
| Personal item | Free |
| Carry-on bag | Paid |
| Checked bag | Paid |
| Oversized checked bag | Extra fee |
| Overweight checked bag | Extra fee |
| Additional checked bags | Paid |
Allegiant carry-on bag fees may vary by route and time of purchase. Checked bag fees also vary, so you should check the exact price while booking or through Manage Travel.
The smartest way to save is to add bags online before you reach the airport.
Allegiant Overweight and Oversized Baggage Fees
Allegiant charges extra fees if your checked bag is overweight or oversized.
Here is the baggage fee breakdown:
| Baggage issue | Limit | Extra fee |
|---|---|---|
| Overweight bag | 51–70 lbs | $50 per segment |
| Heavy overweight bag | 71–99 lbs | $75 per segment |
| Oversized checked bag | Over 80 linear inches | $75 per segment |
Bags weighing 100 lbs or more are not accepted.
Oversized and overweight fees are charged in addition to the regular checked bag fee. If your bag is both overweight and oversized, both extra fees may apply.
Example:
If your checked bag is 55 lbs and also over 80 linear inches, you may pay the checked bag fee, plus the overweight fee, plus the oversized fee.
What Items Can You Carry for Free on Allegiant?
Apart from one free personal item, Allegiant may allow some additional items without counting them as regular baggage.
These may include:
- Jacket or coat
- Small umbrella
- Food for consumption during the flight
- Assistive devices
- Mobility aids
- Strollers
- Car seats
- Diaper bag when traveling with an infant or child
These rules may depend on your travel situation, so always check your booking details before departure.
Does a Blanket Count as a Personal Item on Allegiant?
A blanket usually does not count as your personal item if it is carried separately and reasonably. Your personal item rule mainly applies to bags such as purses, backpacks, briefcases, laptop bags, and small totes.
However, if you stuff the blanket inside a large bag, the bag itself must still fit within the Allegiant personal item size of 8 x 14 x 18 inches.
Are Allegiant Personal Items Weighed?
Allegiant does not usually list a specific weight limit for personal items. The main rule is size and fit. Your personal item must fit under the seat and stay within 8 x 14 x 18 inches.
That said, it should still be light enough for you to carry safely and store without causing issues during boarding.
Best Bags That Fit Allegiant Personal Item Size
The best personal item bag for Allegiant is soft, compact, and easy to slide under the seat.
Good options include:
- 18-inch small backpack
- Slim laptop backpack
- Soft tote bag
- Small travel backpack
- Compact duffel-style personal item bag
- Purse with zip closure
- Camera bag
Avoid hard-sided bags that are exactly at the size limit. Soft bags are easier to fit under the seat, especially when the space is tight.
Before flying, measure your bag after packing it. This gives you the real size, not the empty-bag size.
How to Measure Your Allegiant Personal Item?
To check if your bag fits Allegiant’s personal item size, measure three sides:
- Height
- Width
- Depth
Your bag must not exceed:
8 x 14 x 18 inches
Make sure you measure the bag from the outside. Include:
- Wheels
- Handles
- Front pockets
- Side pockets
- Straps
- Decorations
- Bulging fabric from overpacking
If the bag is soft, leave a little extra space. A bag that measures exactly 8 x 14 x 18 inches when empty may become too large after packing.
How to Add Bags to an Allegiant Flight
You can add bags to your Allegiant flight online through the booking process or later through Manage Travel.
Here is how:
- Visit Allegiant’s official website.
- Open Manage Travel.
- Enter your confirmation number and last name.
- Select your trip.
- Choose the baggage option you need.
- Add carry-on or checked bags.
- Pay the baggage fee.
- Check your updated itinerary.
Buying bags online is usually cheaper than paying at the airport. If you already know you need extra luggage, do not wait until the boarding gate.
How to Avoid Allegiant Baggage Fees
You can reduce or avoid Allegiant baggage fees with smart packing.
1. Use only the free personal item
Pack everything into one bag that fits the Allegiant free bag size of 8 x 14 x 18 inches. This is the easiest way to avoid baggage fees.
2. Choose a soft backpack
A soft backpack is easier to fit under the seat than a hard bag. It also gives you better control over shape and size.
3. Buy bags during booking
If you need a carry-on or checked bag, add it while booking the flight. Airport and gate baggage fees can be higher.
4. Weigh checked bags at home
Checked bags must be under 50 lbs. Weigh your bag before leaving to avoid overweight baggage fees.
5. Compare the final price
Before booking, compare the base fare plus baggage fees. Sometimes another airline may look more expensive at first but cost less after bags are included.
Allegiant Personal Item vs Carry-On: What Should You Choose?
Choose a personal item if:
- You are taking a short trip
- You can pack light
- You want to avoid baggage fees
- You only need essentials
- You are okay with limited space
Choose a carry-on if:
- You need more clothes
- You are traveling for several days
- You want overhead bin space
- You do not want to check a bag
- Your personal item is not enough
For budget travelers, the free personal item is the best option. For longer trips, a paid carry-on may be more practical.
Read more about change name on Allegiant Air flight ticket.
Final Thoughts
The Allegiant personal item size is 8 x 14 x 18 inches, and this is the only bag included for free with a standard ticket. If your bag fits under the seat and stays within the Allegiant personal bag size, you can avoid paying extra baggage fees.
But if you need more space, check the Allegiant carry on size, checked baggage limits, and baggage fees before booking. Adding bags online early is usually better than paying at the airport.
Need help with Allegiant flight booking, baggage rules, airline deals, or manage booking support? Call Flying Getaway at our phone for assistance with Allegiant Airlines reservations and baggage information.
Frequently Asked Questions
1. What is the Allegiant personal item size?
The Allegiant personal item size is 8 x 14 x 18 inches. Your personal item must fit under the seat in front of you and should include handles, wheels, pockets, and outside attachments within the total size.
2. What is the Allegiant free bag size?
The Allegiant free bag size is 8 x 14 x 18 inches. This free bag is called a personal item and can be a small backpack, purse, laptop bag, briefcase, camera bag, or compact tote.
3. What is the personal item size Allegiant allows?
The personal item size Allegiant allows is 8 x 14 x 18 inches. The bag must fit completely under the seat and should not be placed in the overhead bin.
4. Is a backpack considered a personal item on Allegiant?
Yes, a backpack is considered a personal item on Allegiant if it fits within 8 x 14 x 18 inches and can be stored under the seat in front of you.
5. Is Allegiant strict with personal item size?
Yes, Allegiant can be strict with personal item size. If your bag is larger than 8 x 14 x 18 inches, it may be treated as a paid carry-on bag and you may have to pay an extra fee.
6. What is Allegiant carry on size?
The Allegiant carry on size is 10 x 16 x 22 inches. A carry-on bag must fit in the overhead bin and usually requires an extra fee.
7. Can I bring a personal item and carry-on on Allegiant?
Yes, you can bring one personal item and one carry-on bag on Allegiant. The personal item is free if it fits under the seat. The carry-on bag is usually paid and must fit in the overhead bin.
8. Does Allegiant charge for carry-on bags?
Yes, Allegiant usually charges for carry-on bags. Carry-on fees vary by route and purchase timing, so it is better to add your carry-on during booking instead of at the airport.
9. What size checked bag does Allegiant allow?
Allegiant checked bags must be under 80 linear inches and under 50 lbs to avoid extra overweight or oversized baggage fees.
10. How can I avoid Allegiant baggage fees?
The best way to avoid Allegiant baggage fees is to travel with only one free personal item that fits within 8 x 14 x 18 inches. If you need more baggage, buy carry-on or checked bags online early.
Patrick Walker is the travel brain behind Flying Getaway. With a knack for spotting flight deals and a passion for exploring new skies, he helps travelers fly smarter and save more with every trip.
