Allegiant Carry On Size (2026)

Allegiant’s published carry-on limit is 10 × 16 × 22 inches (25 × 40 × 55 cm), exterior including wheels, pockets, handles, and decorations. A full-size carry-on is paid on the base fare; it is not free by default. Every ticket still includes one free personal item at 8 × 14 × 18 inches under the seat. Carry-on fees are cited in a $10 to $75 range by route and when you add the bag; the airport fee is often $75. Check your exact city-pair price on allegiantair.com or the Baggage Fees Calculator; no single nationwide price is fixed.

Based on Allegiant’s baggage page, Optional Services fees and Contract of Carriage. The size limits on this page are fixed; prices change with route and timing (they usually rise from booking to pre-departure to the airport). The full fee table and checked-bag add-ons are on our Allegiant baggage fees page. Figures come from excerpts of Allegiant’s official pages; check them on allegiantair.com or in the calculator before you travel.

Older size: 9 × 14 × 22 in is out of date. We go by the Contract of Carriage, the baggage page and Optional Services (10 × 16 × 22). Allegiant’s current baggage page does not show 9 × 14 × 22.

Older personal item size: 7 × 15 × 16 is out of date; go by 8 × 14 × 18 (personal item).

Allegiant publishes 10 × 16 × 22, not Frontier’s 24 × 16 × 10 size. Keep the axis order the same when comparing sizes. As with other low-cost airlines, “fits overhead” does not mean “free on the base fare.”

• Free with ticket: one personal item (8 × 14 × 18 in) under the seat on the base fare.
• Paid: full-size carry-on, priced by route and timing; the price typically rises from booking to pre-departure to the airport. Get the exact price in Manage Travel or the Baggage Fees Calculator; there is no fixed nationwide carry-on price.
• Checked bags are also paid add-ons; see Allegiant baggage fees for the full tables.
• Also free when Allegiant states them (cabin items that do not count as paid bags; check the full list on Allegiant’s baggage FAQ): car seats and strollers; mobility aids; medical equipment (for example portable oxygen concentrators, diabetic supplies); food for in-flight consumption; coat or jacket; diaper bag; umbrella.
• Military and loyalty bag waivers: check allegiantair.com rather than assuming waivers Allegiant has not published.
• Optional seat, priority and bag products may appear when you book; check the names shown there.

1. Carry-on is often paid. Travelers used to larger airlines such as Delta and Southwest often miss this: on Allegiant’s low-cost model, the base fare includes a personal item only.
2. Strict outside measurement. Unpaid or oversized carry-ons lead to airport or gate fees. Measure including wheels, pockets, handles, and decorations.
3. Axis order matters. Allegiant publishes 10 × 16 × 22, not Frontier’s 24 × 16 × 10, so don’t swap axes when shopping or comparing.
4. Older pages may still show 9 × 14 × 22. We go by the Contract of Carriage, the baggage page and Optional Services; check allegiantair.com.
5. Allegiant does not publish a cabin weight limit; check with Allegiant for rare route exceptions.
6. An oversized personal item gets an airport fee of $50 to $75; see personal item.
7. Check the product names shown when you book; we found no named bag bundles on Allegiant’s pages.

• If you need overhead space, add the carry-on at booking (usually the cheapest price) through Optional Services or the Baggage Fees Calculator.
• Measure including wheels, handles and pockets; stay within 10 × 16 × 22 in (25 × 40 × 55 cm).
• If you pack light, the free personal item (8 × 14 × 18) is all you need.
• Avoid buying at the airport: Allegiant’s airport prices are higher.
• Check the Baggage Fees Calculator for your city pair before you travel, because route pricing changes.

Look for hard or soft carry-ons marketed at or under Allegiant’s published 10 × 16 × 22 inches (25 × 40 × 55 cm) (exterior), and confirm with a tape measure before you fly. Soft under-seat bags at or under 8 × 14 × 18 in (20 × 35 × 45 cm) cover the free personal-item slot. Product listings often reorder depth, width and height; match Allegiant’s published axis order, not Frontier’s 18×14×8 or 24×16×10. Measure when packed; the airport sizer is the rule. A fit is not guaranteed.

See Allegiant personal item and Allegiant baggage fees.

What is Allegiant’s carry-on size?
10 × 16 × 22 inches (25 × 40 × 55 cm), including wheels, handles, pockets, and decorations. It is a paid add-on on the base fare (Optional Services $10 to $75 by route and timing).

Does Allegiant charge for carry-on bags?
Yes: carry-on is a paid add-on on the base fare (Allegiant is a low-cost airline). Allegiant lists $10 to $75 depending on route and when you add it, and prices are higher at the airport. Get the exact price from the Baggage Fees Calculator, and buy early.

Does Allegiant’s base fare include a free carry-on?
No. The base fare includes a free personal item only (8 × 14 × 18). Full carry-on is always an add-on unless a current optional product includes it; check when you book.

What if my bag doesn’t fit Allegiant’s size?
Expect airport or gate fees, or a forced check. Measure the outside of your bag before you fly.

What is Allegiant’s personal item size?
8 × 14 × 18 in (20 × 35 × 45 cm), free under the seat. The older 7 × 15 × 16 size is out of date; go by 8 × 14 × 18. Details: Allegiant personal item.

Is Allegiant carry-on the same as Frontier’s 24 × 16 × 10?
No. Allegiant’s published carry-on is 10 × 16 × 22. Frontier’s size does not apply to Allegiant.

• Allegiant baggage fees
• Allegiant personal item size
• Frontier carry-on size
• Southwest carry-on size
• Delta carry-on size

Fees and rules change. Check the latest size limits and live bag prices on allegiantair.com (Baggage Fees Calculator and Optional Services) before you travel. BagRule is an independent publisher and is not affiliated with Allegiant Air.