content: <?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
    <headerData>
      <submissionType>144</submissionType>
      <filerInfo>
        <filer>
          <filerCredentials>
            <cik>0001277174</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>DAVIS DAVID M</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Officer</relationshipToIssuer>
          <relationshipToIssuer>Director</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>4294</noOfUnitsSold>
        <aggregateMarketValue>46990.12</aggregateMarketValue>
        <noOfUnitsOutstanding>52807083</noOfUnitsOutstanding>
        <approxSaleDate>09/03/2024</approxSaleDate>
        <securitiesExchangeName>NASDAQ</securitiesExchangeName>
      </securitiesInformation>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>07/01/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2158</amountOfSecuritiesAcquired>
        <paymentDate>07/01/2024</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>Common</securitiesClassTitle>
        <acquiredDate>04/01/2024</acquiredDate>
        <natureOfAcquisitionTransaction>Restricted Stock Vesting</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>2136</amountOfSecuritiesAcquired>
        <paymentDate>04/01/2024</paymentDate>
        <natureOfPayment>Compensation</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <securitiesSoldInPast3Months>
        <sellerDetails>
          <name>David M. Davis</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>07/02/2024</saleDate>
        <amountOfSecuritiesSold>935</amountOfSecuritiesSold>
        <grossProceeds>11780.45</grossProceeds>
      </securitiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>09/03/2024</noticeDate>
        <signature>/s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for David M Davis </signature>
      </noticeSignature>
    </formData>
  </edgarSubmission>
metadata_documents: [{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 4020}]
text: 144
  0001277174
  XXXXXXXX
  LIVE
  0001743907
  Sun Country Airlines Holdings, Inc.
  001-40217
  2005 CARGO ROAD
  MINNEAPOLIS
  MN
  55450
  651-681-3900
  DAVIS DAVID M
  Officer
  Director
  Common
  Fidelity Brokerage Services LLC
  900 Salem Street
  Smithfield
  RI
  02917
  4294
  46990.12
  52807083
  09/03/2024
  NASDAQ
  Common
  07/01/2024
  Restricted Stock Vesting
  Issuer
  N
  2158
  07/01/2024
  Compensation
  Common
  04/01/2024
  Restricted Stock Vesting
  Issuer
  N
  2136
  04/01/2024
  Compensation
  N
  David M. Davis
  2005 Cargo Road
  Minneapolis
  MN
  55450
  Common
  07/02/2024
  935
  11780.45
  09/03/2024
  /s/Wade Moss, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for David M Davis