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Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
Originator-Key-Asymmetric:
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 IFxiA/+bdIe9/1MBmbk4d2xwTXoZNRKCtTDAxuV+kBf+9Rt1DycsDc1Vt7av1IwJ
 jBmbfNyM0IAab62kU0xqzw==

<SEC-DOCUMENT>0001209191-03-022563.txt : 20030923
<SEC-HEADER>0001209191-03-022563.hdr.sgml : 20030923
<ACCEPTANCE-DATETIME>20030923140407
ACCESSION NUMBER:		0001209191-03-022563
CONFORMED SUBMISSION TYPE:	4/A
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20020903
FILED AS OF DATE:		20030923

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			VIASAT INC
		CENTRAL INDEX KEY:			0000797721
		STANDARD INDUSTRIAL CLASSIFICATION:	RADIO & TV BROADCASTING & COMMUNICATIONS EQUIPMENT [3663]
		IRS NUMBER:				330174996
		STATE OF INCORPORATION:			CA
		FISCAL YEAR END:			0402

	BUSINESS ADDRESS:	
		STREET 1:		6155 EL CAMINO REAL
		CITY:			CARLSBAD
		STATE:			CA
		ZIP:			92009
		BUSINESS PHONE:		760-476-2200

	MAIL ADDRESS:	
		STREET 1:		6155 EL CAMINO REAL
		CITY:			CARLSBAD
		STATE:			CA
		ZIP:			92009

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			JOHNSON ROBERT W
		CENTRAL INDEX KEY:			0000903435

	FILING VALUES:
		FORM TYPE:		4/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21767
		FILM NUMBER:		03905750

	BUSINESS ADDRESS:	
		STREET 1:		12636 HIGH BLUFF DRIVE 4TH FLOOR
		CITY:			SAN DIEGO
		STATE:			CA
		ZIP:			92130-2093
		BUSINESS PHONE:		6197944300

	MAIL ADDRESS:	
		STREET 1:		2280 UNIVERSITY DRIVE
		CITY:			NEWPORT BEACH
		STATE:			CA
		ZIP:			92660
</SEC-HEADER>
<DOCUMENT>
<TYPE>4/A
<SEQUENCE>1
<FILENAME>doc4a.xml
<DESCRIPTION>FORM 4/A SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4/A</documentType><periodOfReport>2002-09-03</periodOfReport><dateOfOriginalSubmission>2002-09-05</dateOfOriginalSubmission><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000797721</issuerCik><issuerName>VIASAT INC</issuerName>        <issuerTradingSymbol>vsat</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0000903435</rptOwnerCik><rptOwnerName>JOHNSON ROBERT W</rptOwnerName></reportingOwnerId><reportingOwnerAddress><rptOwnerStreet1>6155 EL CAMINO REAL</rptOwnerStreet1><rptOwnerStreet2></rptOwnerStreet2><rptOwnerCity>CARLSBAD</rptOwnerCity><rptOwnerState>CA</rptOwnerState><rptOwnerZipCode>92009</rptOwnerZipCode><rptOwnerStateDescription></rptOwnerStateDescription></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>0</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther></reportingOwnerRelationship></reportingOwner
><derivativeTable><derivativeTransaction><securityTitle><value>stock option (right to buy)</value></securityTitle><conversionOrExercisePrice><value>6.06</value></conversionOrExercisePrice><transactionDate><value>2002-09-03</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>A</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>8000</value></transactionShares><transactionPricePerShare><value>6.06</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F1" /></exerciseDate><expirationDate><value>2012-09-03</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>common stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>8000</value></u
nderlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>47001</value><footnoteId id="F2" /></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">The option vests in three equal annual installments beginning on September 3, 2003.</footnote><footnote id="F2">This amount was inadvertently reported on the date of the original filing (09/05/2002) as the "Amount of Securities Beneficially Owned Following Reported Transactions".</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>Kathleen K. Hollenbeck, under power of attorney.</signatureName><signatureDate>2003-09-23</signatureDate></ownerSignature></ownershipDocument>

</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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