<SEC-DOCUMENT>0001209191-20-032989.txt : 20200529
<SEC-HEADER>0001209191-20-032989.hdr.sgml : 20200529
<ACCEPTANCE-DATETIME>20200529170945
ACCESSION NUMBER:		0001209191-20-032989
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20200527
FILED AS OF DATE:		20200529
DATE AS OF CHANGE:		20200529

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			WOO CAROLYN Y
		CENTRAL INDEX KEY:			0001205211

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-07933
		FILM NUMBER:		20929147

	MAIL ADDRESS:	
		STREET 1:		801 E. 86TH AVENUE
		CITY:			MERRILLVILLE
		STATE:			IN
		ZIP:			4641-

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Aon plc
		CENTRAL INDEX KEY:			0000315293
		STANDARD INDUSTRIAL CLASSIFICATION:	INSURANCE AGENTS BROKERS & SERVICES [6411]
		IRS NUMBER:				363051915
		STATE OF INCORPORATION:			X0
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		THE LEADENHALL BUILDING
		STREET 2:		122 LEADENHALL STREET
		CITY:			LONDON
		STATE:			X0
		ZIP:			EC3V 4AN
		BUSINESS PHONE:		(44) 20 7623 5500

	MAIL ADDRESS:	
		STREET 1:		THE LEADENHALL BUILDING
		STREET 2:		122 LEADENHALL STREET
		CITY:			LONDON
		STATE:			X0
		ZIP:			EC3V 4AN

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	AON CORP
		DATE OF NAME CHANGE:	19920703

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	COMBINED INTERNATIONAL CORP
		DATE OF NAME CHANGE:	19870504
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0306</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2020-05-27</periodOfReport>

    <notSubjectToSection16>0</notSubjectToSection16>

    <issuer>
        <issuerCik>0000315293</issuerCik>
        <issuerName>Aon plc</issuerName>
        <issuerTradingSymbol>AON</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001205211</rptOwnerCik>
            <rptOwnerName>WOO CAROLYN Y</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>200 EAST RANDOLPH ST.</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>CHICAGO</rptOwnerCity>
            <rptOwnerState>IL</rptOwnerState>
            <rptOwnerZipCode></rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isDirector>1</isDirector>
            <isOfficer>0</isOfficer>
            <isTenPercentOwner>0</isTenPercentOwner>
            <isOther>0</isOther>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Class A Ordinary Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2020-05-27</value>
            </transactionDate>
            <deemedExecutionDate></deemedExecutionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
                <footnoteId id="F1"/>
            </transactionCoding>
            <transactionTimeliness>
                <value></value>
            </transactionTimeliness>
            <transactionAmounts>
                <transactionShares>
                    <value>600</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>197.799</value>
                    <footnoteId id="F2"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>25687</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">On April 1, 2020, Aon plc, an Irish public limited company (the &quot;Company&quot;), became the successor of Aon plc, a public limited company incorporated under the laws of England and Wales (&quot;Aon UK&quot;), pursuant to a scheme of arrangement under English law. Pursuant to the transaction, all outstanding Class A ordinary shares of Aon UK were exchanged, on a one-for-one basis, for Class A ordinary shares of the Company, and Aon UK became a wholly owned subsidiary of the Company. The transaction did not alter the proportionate interests of security holders</footnote>
        <footnote id="F2">The price reported is a weighted average price. Shares were sold in a series of transactions within the same trading day at prices ranging from $197.790 to $197.845, inclusive. Full information regarding the number of shares sold at each separate price is available upon request by the Commission staff, the issuer, or a security holder of the issuer.</footnote>
    </footnotes>

    <remarks></remarks>

    <ownerSignature>
        <signatureName>/s/ Molly Johnson - Molly Johnson pursuant to power of attorney from Carolyn Woo</signatureName>
        <signatureDate>2020-05-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
