Allegiant Air vs Viva Aerobus: fleets and facts compared
Allegiant Air (United States) and Viva Aerobus (Mexico) side by side: fleet size, main aircraft type, founding year, hubs and status, each from our database with its source and date. Both are among the larger low-cost airlines in North America in our directory.
- 124Allegiant Air fleet, as of 30 June 2026
- 109Viva Aerobus fleet, as of 30 June 2026
- United States · Hubs LAS · AZA · SFB +3 · founded 1998Active
- Mexico · Hubs MTY · MEX · CUN +3 · founded 2006Active
At a glance
Each fact from our database. A grey tint marks the larger value in a row; it is not a verdict.
Data last updated: Allegiant Air · Viva Aerobus
Fleet breakdown
Aircraft types as each source reports them, largest first.
Allegiant Air fleet3 types
Viva Aerobus fleet4 types
Baggage & fees compared
Human-reviewed summaries. Rules change, so check the airline's own site before you book.
Allegiant Air
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.
Viva Aerobus
Viva's baggage policy page (US English site) gives these limits. Sizes and weights only; what is included depends on the fare you choose.
- Personal item: included on every fare. It must fit under the seat in front and not exceed 18 x 14 x 8 inches. Examples are a handbag, laptop case or backpack.
- Carry-on bag: goes in the overhead bin. Maximum 22 x 16 x 10 inches including wheels and handles. Weight limit is 22 lb on the Switch fare, or 33 lb on Smart or with extra weight added.
- Checked bag: up to 33 lb when chosen on the Switch fare, or up to 55 lb on Smart. Extra weight can be bought up to 70 lb per bag. Maximum size is 62 linear inches (length + width + height), including handles and wheels.
- Flights to the United States: a maximum of three checked bags per passenger, and powders over 12 oz (350 ml) may not travel in the cabin.
- Medical equipment: carried in the cabin at no extra charge within the carry-on size (22 x 16 x 10 in) and weight (22 lb) limits.
Source: Viva, "Baggage Policies", read on 24 October 2026.
Source: airline baggage page, read 2026-10-24.
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Frequently asked
Which has the bigger fleet, Allegiant Air or Viva Aerobus?
Allegiant Air has the larger published fleet. Allegiant Air 124 aircraft (Airline report, as of 30 June 2026); Viva Aerobus 109 aircraft (Airline report, as of 30 June 2026).
Is Allegiant Air cheaper than Viva Aerobus?
Fares change by route, date and demand, so neither airline is always cheaper. This page compares fleets and published facts, not fares. To check prices for a trip, search both airlines for the same dates.
Which airline is older?
Allegiant Air was founded in 1998, Viva Aerobus in 2006.
Do Allegiant Air and Viva Aerobus share a hub airport?
Not in our data. Allegiant Air lists LAS, AZA, SFB, PIE, PGD and BNA; Viva Aerobus lists MTY, MEX, CUN, GDL, TIJ and NLU.
Are both airlines currently flying?
Yes. Both are active in our directory.