Frontier Airlines vs Sun Country Airlines: fleets and facts compared
Frontier Airlines (United States) and Sun Country Airlines (United States) 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.
- 165Frontier fleet, as of 30 June 2026
- 47Sun Country fleet, as of 30 June 2026
- United States · Hubs DEN · MCO · LAS +3 · founded 1994Active
- United States · Hub MSP · founded 1983Active
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: Frontier Airlines · Sun Country Airlines
Fleet breakdown
Aircraft types as each source reports them, largest first.
Frontier Airlines fleet4 types
Sun Country Airlines fleet3 types
The type counts add up to 69 of the 47-aircraft total, as the source reports them.
Baggage & fees compared
Human-reviewed summaries. Rules change, so check the airline's own site before you book.
Frontier Airlines
Frontier's Bag Options page lists these limits. Sizes and weights only; only the personal item is included in the base fare.
- Personal item: included on every fare. Maximum 8 in deep x 18 in wide x 14 in high. Its size is checked at boarding.
- Carry-on bag: paid extra unless included in a bundle or status benefit. Maximum 10 in deep x 16 in wide x 24 in high and under 35 lb.
- Checked bag: paid extra unless included. Maximum 62 linear inches and under 40 lb, as shown on the page on the date read.
- Frontier Elite members may bring a carry-on free. Passengers on an Elite 100k member's booking may also bring a carry-on and/or check one bag free.
- Verified active-duty military passengers may bring one carry-on and check up to two bags free, including oversized or overweight bags. This does not extend to companions.
The weight limit for checked bags shown here (under 40 lb) is lower than the 50 lb used by many US carriers, so check it against your booking. Source: Frontier Airlines, "Bag Options", read on 24 October 2026.
Source: airline baggage page, read 2026-10-24.
Sun Country Airlines
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.
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Frequently asked
Which has the bigger fleet, Frontier Airlines or Sun Country Airlines?
Frontier Airlines has the larger published fleet. Frontier Airlines 165 aircraft (Airline report, as of 30 June 2026); Sun Country Airlines 47 aircraft (Airline report, as of 30 June 2026).
Is Frontier Airlines cheaper than Sun Country Airlines?
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?
Sun Country Airlines was founded in 1983, Frontier Airlines in 1994.
Do Frontier Airlines and Sun Country Airlines share a hub airport?
Not in our data. Frontier Airlines lists DEN, MCO, LAS, ATL, PHL and MIA; Sun Country Airlines lists MSP.
Are both airlines currently flying?
Yes. Both are active in our directory.