content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
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      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001850688</cik>
            <ccc>XXXXXXXX</ccc>
          </filerCredentials>
        </filer>
        <liveTestFlag>LIVE</liveTestFlag>
  
  
  
      </filerInfo>
    </headerData>
    <formData>
      <issuerInfo>
        <issuerCik>0001743907</issuerCik>
        <issuerName>Sun Country Airlines Holdings, Inc.</issuerName>
        <secFileNumber>001-40217</secFileNumber>
        <issuerAddress>
          <com:street1>2005 CARGO ROAD</com:street1>
          <com:city>MINNEAPOLIS</com:city>
          <com:stateOrCountry>MN</com:stateOrCountry>
          <com:zipCode>55450</com:zipCode>
        </issuerAddress>
        <issuerContactPhone>651-681-3900</issuerContactPhone>
        <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Gyurci John</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>Fidelity Brokerage Services LLC</name>
          <address>
            <com:street1>900 Salem Street</com:street1>
            <com:city>Smithfield</com:city>
            <com:stateOrCountry>RI</com:stateOrCountry>
            <com:zipCode>02917</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>9</noOfUnitsSold>
        <aggregateMarketValue>154.21</aggregateMarketValue>
        <noOfUnitsOutstanding>52939832</noOfUnitsOutstanding>
        <approxSaleDate>02/10/2025</approxSaleDate>
        <securitiesExchangeName>NASDAQ</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>02/10/2025</acquiredDate>
        <natureOfAcquisitionTransaction>Options Granted 11/21/2018</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>9</amountOfSecuritiesAcquired>
        <paymentDate>02/10/2025</paymentDate>
        <natureOfPayment>Cash</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>12/12/2024</saleDate>
        <amountOfSecuritiesSold>40000</amountOfSecuritiesSold>
        <grossProceeds>624352.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/03/2025</saleDate>
        <amountOfSecuritiesSold>373</amountOfSecuritiesSold>
        <grossProceeds>5274.82</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/10/2025</saleDate>
        <amountOfSecuritiesSold>1008</amountOfSecuritiesSold>
        <grossProceeds>16026.61</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/21/2025</saleDate>
        <amountOfSecuritiesSold>400</amountOfSecuritiesSold>
        <grossProceeds>6800.52</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/22/2025</saleDate>
        <amountOfSecuritiesSold>6000</amountOfSecuritiesSold>
        <grossProceeds>102804.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/23/2025</saleDate>
        <amountOfSecuritiesSold>200</amountOfSecuritiesSold>
        <grossProceeds>3400.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/24/2025</saleDate>
        <amountOfSecuritiesSold>1593</amountOfSecuritiesSold>
        <grossProceeds>27088.33</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/27/2025</saleDate>
        <amountOfSecuritiesSold>27482</amountOfSecuritiesSold>
        <grossProceeds>469774.56</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/29/2025</saleDate>
        <amountOfSecuritiesSold>200</amountOfSecuritiesSold>
        <grossProceeds>3400.00</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/30/2025</saleDate>
        <amountOfSecuritiesSold>3952</amountOfSecuritiesSold>
        <grossProceeds>67289.91</grossProceeds>
      </securitiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>John M. Gyurci</name>
          <address>
            <com:street1>2005 Cargo Road</com:street1>
            <com:city>Minneapolis</com:city>
            <com:stateOrCountry>MN</com:stateOrCountry>
            <com:zipCode>55450</com:zipCode>
          </address>
        </sellerDetails>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <saleDate>01/31/2025</saleDate>
        <amountOfSecuritiesSold>164</amountOfSecuritiesSold>
        <grossProceeds>2804.29</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>02/10/2025</noticeDate>
        <planAdoptionDates>
          <planAdoptionDate>09/10/2024</planAdoptionDate>
        </planAdoptionDates>
        <signature>/s/ Adam Gehring, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for John M. Gyurci</signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 9333}]
text: 144
  0001850688
  XXXXXXXX
  LIVE
  0001743907
  Sun Country Airlines Holdings, Inc.
  001-40217
  2005 CARGO ROAD
  MINNEAPOLIS
  MN
  55450
  651-681-3900
  Gyurci John
  Officer
  Common
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  9
  154.21
  52939832
  02/10/2025
  NASDAQ
  Common
  02/10/2025
  Options Granted 11/21/2018
  Issuer
  N
  9
  02/10/2025
  Cash
  N
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  12/12/2024
  40000
  624352.00
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  01/03/2025
  373
  5274.82
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  01/10/2025
  1008
  16026.61
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  01/21/2025
  400
  6800.52
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  01/22/2025
  6000
  102804.00
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  01/23/2025
  200
  3400.00
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  01/24/2025
  1593
  27088.33
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  01/27/2025
  27482
  469774.56
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  01/29/2025
  200
  3400.00
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  01/30/2025
  3952
  67289.91
  John M. Gyurci
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  01/31/2025
  164
  2804.29
  02/10/2025
  09/10/2024
  /s/ Adam Gehring, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for John M. Gyurci