Allegiant Airlines Carry-On Size & Baggage Rules (2026)
Trying to pack for an Allegiant flight can feel confusing at first—especially when you realise not everything is included in your ticket. Allegiant Airlines has specific rules for carry-on baggage, including luggage size, weight limits, and cabin baggage allowance. Understanding the exact carry-on size dimensions, personal item rules, and restrictions can help you avoid extra fees at the airport.
As a low-cost airline, Allegiant keeps base fares low and charges separately for most baggage beyond a personal item. That means knowing the allowed baggage size and restrictions ahead of time makes a big difference.
Allegiant Airlines Carry-On Luggage Size & Weight Limits
| Baggage Type | Size (cm) | Size (inches) | Weight | Allowance |
|---|---|---|---|---|
| Carry-on bag | 55 x 40 x 25 | 22 x 16 x 10 | Not specified | 1 bag (paid) |
| Personal item | 45 x 35 x 20 | 18 x 14 x 8 | Not specified | 1 item (free) |
Allegiant Airlines Carry-On & Baggage Fees
| Baggage Type | Price Range |
|---|---|
| Personal item | Free / Included |
| Carry-on bag | $10.00 – $75.00 (varies by route & booking time) |
| Checked bag | Varies by route and booking time |
Additional Baggage Charges
- Overweight Bag (51–70 lbs): +$50
- Overweight Bag (71–100 lbs): +$75
- Oversized Checked Bag (over 80 linear inches): +$75
- Oversized Personal Item / Excess Carry-on: $50 – $75 (airport fee)
- Gate-checked Bags: $0 – $75
Key Notes from Allegiant
- Personal item (max 18 x 14 x 8 inches) is always free
- Carry-on bags (max 22 x 16 x 10 inches) are paid
- Checked bags can be purchased in advance (up to 4 per passenger)
- Each checked bag can weigh up to 50 lbs (22 kg)
- Buying baggage online is cheaper than paying at the airport
- Car seats, strollers, and assistive devices are exempt from baggage fees
Data verified from official airline sources.
Source: Allegiant Airlines Official Policy
Carry-On Dimensions & Size Restrictions for Allegiant Airlines
Allegiant Airlines has clearly defined carry-on size restrictions that are enforced at the airport.
The permitted carry-on luggage size is 22 x 16 x 10 inches (55 x 40 x 25 cm), including wheels and handles. This bag must fit in the overhead bin.
For personal items, the size limit is 18 x 14 x 8 inches (45 x 35 x 20 cm), and it must fit completely under the seat in front of you.
These luggage dimensions are checked using airport sizer bins. If your bag doesn’t fit, it may be treated as checked baggage with additional charges.
Carry-On Weight Limit & Baggage Allowance
Allegiant Airlines does not specify a weight limit for carry-on or personal items.
Instead, the focus is on size and fit:
- Carry-on must fit in overhead storage
- Personal item must fit under the seat
- Bags must include wheels and handles within total dimensions
Baggage allowance works like this:
- 1 personal item: Always free
- Carry-on bag: Must be purchased separately
- Checked bags: Can be pre-purchased (up to 4 per passenger)
Each checked bag can weigh up to 50 pounds (22 kg).
Personal Item Size & Carry-On Bag Allowance
Every Allegiant passenger can bring one free personal item onboard.
This item must:
- Fit completely under the seat
- Stay within 18 x 14 x 8 inches
Examples include:
- Small backpack
- Handbag
- Laptop bag
Your carry-on bag, on the other hand, is optional and must be purchased. Only one carry-on bag is allowed per passenger.
There are also additional allowances for assistive devices:
- Canes, crutches, and CPAP machines are allowed
- Mobility devices may be checked free of charge
- These items do not count toward your carry-on allowance
Compare with Other Airlines
- Spirit carry-on size
- Frontier baggage rules
- Southwest carry-on allowance
- United baggage policy
- JetBlue cabin luggage size
- Alaska carry-on size
- American Airlines carry-on size
Carry-On Size Restrictions & Rules
Allegiant Airlines follows strict baggage rules, especially at the gate.
Here are key restrictions:
- Bags must include wheels and handles in measurements
- Oversized personal items may incur fees
- Carry-on bags must fit in overhead compartments
If your bag exceeds the permitted dimensions, you may be required to check it.
Special note:
- Airport bag fees apply to oversized carry-on and personal items
Additionally, some items are allowed onboard without counting toward your baggage allowance if they meet FAA safety rules, particularly assistive devices.
Maximum Carry-On Size Allowed by Allegiant Airlines
The maximum allowed size for carry-on luggage is:
- 22 x 16 x 10 inches (55 x 40 x 25 cm)
This includes all parts of the bag. Even slightly oversized luggage may be flagged during boarding.
How Strict Is Allegiant Airlines With Carry-On Size?
From real traveler experiences, Allegiant Airlines is quite strict with carry-on size enforcement.
Here’s what you’ll often notice:
- Staff frequently check bags at the gate using sizer bins
- Oversized bags are quickly flagged
- Gate fees are higher than online prices
In practice, Allegiant enforces these rules consistently, especially on full flights.
Carry-On Rules for Domestic vs International Flights
Allegiant Airlines primarily operates domestic flights, and the same carry-on size rules apply across routes.
Since Allegiant has limited international operations, there are no major variations in carry-on size restrictions between routes.
However:
- Certain restricted items may vary depending on destination
- Security screening rules may differ
The baggage size and allowance remain consistent.
What Happens If Your Carry-On Exceeds Size or Weight Limits?
If your carry-on exceeds the allowed baggage size:
- It will likely be checked at the gate
- You’ll be charged additional fees
- The bag will be treated as checked baggage
For checked bags:
- Over 50 lbs → additional charges apply
- Oversized bags → extra fees apply
Allegiant does not accept bags that exceed safety or FAA regulations.
Carry-On Allowance by Fare Class (Economy vs Business)
Allegiant Airlines uses a simple fare model rather than traditional classes.
- Standard Fare:
- Includes 1 personal item
- Carry-on is not included
- Bundle Options:
- May include carry-on and checked bags
- Can be added during booking or later
This flexible system allows you to pay only for what you need.
Understand Carry-On Rules
FAQs About Allegiant Airlines Carry-On Size
What is the carry-on luggage size for Allegiant Airlines?
The carry-on size is 22 x 16 x 10 inches (55 x 40 x 25 cm).
What size carry-on bag is allowed?
Any bag within the above dimensions that fits in overhead storage is allowed.
What is the maximum carry-on size?
The maximum allowed size is 22 x 16 x 10 inches.
Does Allegiant Airlines have size restrictions?
Yes, both carry-on and personal items must meet strict size limits.
What is the personal item size allowed?
The personal item must not exceed 18 x 14 x 8 inches (45 x 35 x 20 cm).
How strict is Allegiant Airlines with carry-on baggage?
Allegiant is quite strict and often checks bag sizes at the gate.
What happens if my carry-on is oversized?
It will likely be checked at the gate and you’ll need to pay additional fees.
Allegiant Airlines keeps things simple but firm. If your bag meets the permitted dimensions and you plan your baggage ahead of time, you’ll have no trouble getting through boarding.
