AIRCRAFT

3 Months Ended

Mar. 31, 2025

Property, Plant and Equipment [Abstract]

AIRCRAFT

AIRCRAFT

As of March 31, 2025, Sun Country's fleet consisted of 66 Boeing 737-NG aircraft, comprised of 61 Boeing 737-800s and five Boeing 737-900ERs.

The following tables summarize the Company’s aircraft fleet activity for the three months ended March 31, 2025 and 2024, respectively:

	December 31, 2024	Additions	Reclassifications	Removals	March 31, 2025
Passenger:
Owned	34	—	—	—	34
Finance leases	11	—	—	—	11
Sun Country Airlines’ Fleet	45	—	—	—	45
Cargo:
Aircraft Operated for Amazon (1)	12	3	—	—	15
Other:
Owned Aircraft Held for Operating Lease	4	—	—	—	4
Subleased Aircraft (2)	2	—	—	—	2
Total Aircraft	63	3	—	—	66
	December 31, 2023	Additions	Reclassifications	Removals	March 31, 2024
Passenger:
Owned	29	1	—	—	30
Finance leases	13	1	—	—	14
Sun Country Airlines’ Fleet	42	2	—	—	44
Cargo:
Aircraft Operated for Amazon	12	—	—	—	12
Other:
Owned Aircraft Held for Operating Lease	5	—	—	—	5
Subleased Aircraft (2)	1	1	—	—	2
Total Aircraft	60	3	—	—	63

(1)	This amount includes both aircraft in-service and aircraft received, but not in-service as of March 31, 2025.
(2)	The head leases associated with these subleases are classified as finance leases.

During the three months ended March 31, 2025, the Company received three additional cargo aircraft under the A&R ATSA, of which one aircraft was in-service. During the three months ended March 31, 2025, amendments were executed to extend the lease expiry terms for three of the four remaining Owned Aircraft Held for Operating Lease, which now expire over various dates through the fourth quarter of 2026. Of the 38 Owned aircraft and Owned Aircraft Held for Operating Lease as of March 31, 2025, 31 aircraft were financed, five aircraft have been pledged to support the ability to efficiently utilize the Company's new four-year $75,000 revolving credit facility (“Revolving Credit Facility”) entered into during March 2025, and two aircraft were unencumbered. See Note 5 for more information on the Company's Revolving Credit Facility.

During the three months ended March 31, 2024, the Company acquired one incremental aircraft and took control of two aircraft through finance lease arrangements, one of which was subsequently subleased to an

unaffiliated airline. Upon expiry of the sublease, the aircraft will be redelivered to the Company and is expected to be inducted into the Company's passenger fleet.

Depreciation, amortization, and rent expense on aircraft are as follows:

		Three Months Ended March 31,
Aircraft Status	Expense Type	2025		2024
Owned	Depreciation	$	14,419	$	14,340
Finance Leased	Amortization	5,206		5,730
		$	19,625	$	20,070