<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-10-16</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0001725255</issuerCik>
        <issuerName>AdaptHealth Corp.</issuerName>
        <issuerTradingSymbol>AHCO</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001427430</rptOwnerCik>
            <rptOwnerName>Assured Investment Management LLC</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>280 PARK AVENUE, 12TH FLOOR</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>NEW YORK</rptOwnerCity>
            <rptOwnerState>NY</rptOwnerState>
            <rptOwnerZipCode>10017</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <derivativeTable>
        <derivativeTransaction>
            <securityTitle>
                <value>Put Option (Right to Sell)</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
                <footnoteId id="F5"/>
                <footnoteId id="F6"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>14.50</value>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-10-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F3"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1898967</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2020-10-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A and B Common Stock</value>
                    <footnoteId id="F6"/>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1898967</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Call Option (Obligation to Sell)</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
                <footnoteId id="F5"/>
                <footnoteId id="F6"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>15.76</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-10-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F3"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1898967</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2020-10-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A and B Common Stock</value>
                    <footnoteId id="F6"/>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1898967</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>0</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Put Option (Right to Sell)</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
                <footnoteId id="F5"/>
                <footnoteId id="F6"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>14.50</value>
                <footnoteId id="F4"/>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-10-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>A</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F3"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1898967</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>A</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2020-10-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A and B Common Stock</value>
                    <footnoteId id="F6"/>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1898967</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1898967</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
        <derivativeTransaction>
            <securityTitle>
                <value>Call Option (Obligation to Sell)</value>
                <footnoteId id="F1"/>
                <footnoteId id="F2"/>
                <footnoteId id="F3"/>
                <footnoteId id="F4"/>
                <footnoteId id="F5"/>
                <footnoteId id="F6"/>
            </securityTitle>
            <conversionOrExercisePrice>
                <value>15.76</value>
            </conversionOrExercisePrice>
            <transactionDate>
                <value>2020-10-16</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>D</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F3"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>1898967</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>0.00</value>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <exerciseDate>
                <footnoteId id="F3"/>
                <footnoteId id="F5"/>
            </exerciseDate>
            <expirationDate>
                <value>2020-10-31</value>
            </expirationDate>
            <underlyingSecurity>
                <underlyingSecurityTitle>
                    <value>Class A and B Common Stock</value>
                    <footnoteId id="F6"/>
                </underlyingSecurityTitle>
                <underlyingSecurityShares>
                    <value>1898967</value>
                </underlyingSecurityShares>
            </underlyingSecurity>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>1898967</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>I</value>
                </directOrIndirectOwnership>
                <natureOfOwnership>
                    <value>Footnotes</value>
                    <footnoteId id="F1"/>
                    <footnoteId id="F2"/>
                </natureOfOwnership>
            </ownershipNature>
        </derivativeTransaction>
    </derivativeTable>

    <footnotes>
        <footnote id="F1">The filing of this Form 4 shall not be construed as an admission that Assured Investment Management LLC (f/k/a BlueMountain Capital Management, LLC) (&quot;AssuredIM&quot;) is or was for the purposes of Section 16(a) of the Securities Exchange Act of 1934, as amended (the &quot;Exchange Act&quot;), or otherwise the beneficial owner of any put options (&quot;Put Options&quot;) relating to shares of Class A Common Stock, par value $0.0001 per share &quot;Class A Common Stock&quot;) and Class B Common Stock, par value $0.0001 per share (&quot;Class B Common Stock&quot;), of AdaptHealth Corp. (the &quot;Issuer&quot;).  Pursuant to Rule 16a-1(a)(4) of the Exchange Act, AssuredIM disclaims such beneficial ownership, except to the extent of its pecuniary interest.</footnote>
        <footnote id="F2">AssuredIM is the investment manager of each of: (i) BMSB L.P. (&quot;BMSB&quot;); (ii) BlueMountain Fursan Fund L.P. (&quot;FRSN&quot;); (iii) BlueMountain Foinaven Master Fund L.P. (&quot;BMFV&quot;); and (iv) BlueMountain Summit Opportunities Fund II (US) L.P. (together with BMSB, FRSN and BMFV, the &quot;Funds&quot;), which collectively are the direct beneficial owners of 1,898,967 Put Options.  AssuredIM, although it directs the exercise of the Put Options held by the Funds, only receives an asset-based fee relating to the Put Options held by the Funds.</footnote>
        <footnote id="F3">In a Form 4 filed on May 27, 2020, the Funds reported that they entered into Put/Call Option and Consent Agreement (the &quot;Option Agreement&quot;) dated as of May 25, 2020 with the Issuer pursuant to which the Funds acquired the Put Options from the Issuer and issued to the Issuer call options with respect to the Class A Common Stock and Class B Common Stock of the Issuer (the &quot;Call Options&quot;), each of which options expired on October 31, 2020.  On October 16, 2020 the Issuer and the Funds entered into an Amendment to the Option Agreement (the &quot;Amendment&quot;) that extended the expiration date of both the Put Options and the Call Options to December 31, 2020.  The Amendment is reported in this Form 4 as (i) a cancellation of the original Put Options and Call Options and (ii) an issuance of replacement Put Options by the Issuer to the Funds and replacement Call Options by the Funds to the Issuer.</footnote>
        <footnote id="F4">Pursuant to the Option Agreement, the Put Options may be exercised by the Funds at a per option price equal to the greater of (x) $14.50 and (y) 85% of the current market value of a share of Class A Common Stock on the date the Put Options are exercised, as determined in accordance with the terms of the Option Agreement.</footnote>
        <footnote id="F5">Pursuant to the Option Agreement, both of the Put Options and the Call Options will become exercisable upon the closing date of a merger involving the Issuer, certain subsidiaries thereof, Solara Holdings, LLC and certain entities related thereto.</footnote>
        <footnote id="F6">Pursuant to the Option Agreement, the Put Options and Call Options each relate to the shares of Class A Common Stock and Class B Common Stock held by the Funds, without distinguishing between such shares.</footnote>
    </footnotes>

    <remarks>Dale Wolf serves as a director of the Issuer as the representative of AssuredIM.  In connection therewith, AssuredIM may be deemed to be a director by deputization of the Issuer solely for purposes of Section 16(a) of the Exchange Act.  As a result, AssuredIM is listed as a &quot;Reporting Person&quot; in Item 1 and the &quot;Director&quot; box is marked in Item 4 of this Form 4.</remarks>

    <ownerSignature>
        <signatureName>Assured Investment Management LLC, By: /s/ Eric M. Albert, Chief Compliance Officer</signatureName>
        <signatureDate>2020-10-20</signatureDate>
    </ownerSignature>
</ownershipDocument>
