UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549



SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of
the Securities Exchange Act of 1934



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Filed by a Party other than the Registrant  ☐
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☐ Preliminary Proxy Statement
☐ Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
Definitive Proxy Statement
☒ Definitive Additional Materials
☐ Soliciting Material Pursuant to Section 240.14a-12

SUN COUNTRY AIRLINES HOLDINGS, INC.
(Name of Registrant as Specified in its Charter)
 
(Name of Person(s) Filing Proxy Statement if other than the Registrant)

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☐ Fee paid previously with preliminary materials.
☐ Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11.