Allegiant Air vs Sun Country Airlines: fleets and facts compared

Allegiant's Optional Services & Fees page sets out the following limits. Sizes and weights only; carry-on and checked bags are charged for, and charges vary by route.

• Personal item: one, free of charge, up to 8 x 14 x 18 in (20 x 35 x 45 cm).
• Carry-on bag (paid): one, up to 10 x 16 x 22 in (25 x 40 x 55 cm). No weight limit is stated.
• Checked bags (paid): up to four per passenger, each up to 80 in (203 cm) in combined length, width and height and 50 lb (22 kg). Bags of 51 to 100 lb (23.1 to 45.4 kg) are treated as overweight.
• Measurements include wheels, handles, pockets and decorations.
• Car seats, strollers, mobility aids and assistive devices are not charged as baggage; a car seat or stroller may need to be checked at the gate.

Source: Allegiant Air, "Optional Services & Fees" (baggage section), read on 24 October 2026.

Source: airline baggage page, read 2026-10-24.

Sun Country's Bags and Optional Services page gives the following limits. Sizes and weights only; bag options other than the under-seat item are charged for.

• Under-seat item (included with every reservation): up to 17 x 13 x 9 in, such as a purse or backpack, which must fit under the seat in front.
• Overhead bag (paid option): up to 24 x 16 x 11 in and 35 lb, and must fit the sizer box. Only travellers who have bought this option may use the overhead bins.
• Checked bag (paid option): up to 62 linear inches (length + width + depth) and 50 lb. Heavier and larger bags cost extra.
• Maximum accepted: 80 linear inches or 100 lb. Bags of 70 lb or more are not accepted on flights to or from Canada, Jamaica and Puerto Rico.
• Four or more checked bags must be arranged by phone or at airport check-in.
• Mobility devices and needed medical equipment do not count as extra overhead bags.

Source: Sun Country Airlines, "Bags and Optional Services", read on 24 October 2026.

Source: airline baggage page, read 2026-10-24.