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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,
 JuETMvkZS2DN0J7emFEI/4GIhSEjSwfwjImoOsx8BhOr59wRpi6RmhqAjPqBoHLW
 ISGPfJWkW1WEXS7og/ZuVw==

<SEC-DOCUMENT>0001209191-03-022092.txt : 20030918
<SEC-HEADER>0001209191-03-022092.hdr.sgml : 20030918
<ACCEPTANCE-DATETIME>20030918134450
ACCESSION NUMBER:		0001209191-03-022092
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20030916
FILED AS OF DATE:		20030918

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			DANKBERG MARK D
		CENTRAL INDEX KEY:			0001033482

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	000-21767
		FILM NUMBER:		03901037

	BUSINESS ADDRESS:	
		STREET 1:		2290 COSMOS COURT
		CITY:			CARLSBAD
		STATE:			CA
		ZIP:			92009
		BUSINESS PHONE:		6194388099

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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>doc4.xml
<DESCRIPTION>FORM 4 SUBMISSION
<TEXT>
<XML>
<?xml version="1.0"?><ownershipDocument><schemaVersion>X0201</schemaVersion>    <documentType>4</documentType><periodOfReport>2003-09-16</periodOfReport><notSubjectToSection16>0</notSubjectToSection16><issuer><issuerCik>0000797721</issuerCik><issuerName>VIASAT INC</issuerName>        <issuerTradingSymbol>vsat</issuerTradingSymbol></issuer><reportingOwner><reportingOwnerId><rptOwnerCik>0001033482</rptOwnerCik><rptOwnerName>DANKBERG MARK D</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>1</isOfficer><isTenPercentOwner>0</isTenPercentOwner><isOther>0</isOther><officerTitle>Chief Executive Officer</officerTitle></reportingOwnerRelationship></reportingOwner><derivativeTa
ble><derivativeTransaction><securityTitle><value>Prepaid Forward Contract (right of obligation to sell)</value><footnoteId id="F1" /></securityTitle><conversionOrExercisePrice><footnoteId id="F1" /></conversionOrExercisePrice><transactionDate><value>2003-09-16</value></transactionDate><deemedExecutionDate></deemedExecutionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>J</transactionCode><equitySwapInvolved>0</equitySwapInvolved><footnoteId id="F1" /></transactionCoding><transactionTimeliness><value></value></transactionTimeliness><transactionAmounts><transactionShares><value>0</value><footnoteId id="F1" /><footnoteId id="F2" /></transactionShares><transactionPricePerShare><footnoteId id="F1" /></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value><footnoteId id="F1" /></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><footnoteId id="F1" /></exerciseDate><expirationDate><value>2005-03-16</value><footnoteId id="F1" /></expirationDat
e><underlyingSecurity><underlyingSecurityTitle><value>common stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>125000</value><footnoteId id="F1" /></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>0</value><footnoteId id="F1" /><footnoteId id="F2" /></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">On September 16, 2003, Mr. Dankberg and his wife entered into a prepaid forward contract ("Contract") with respect to 125,000 shares of ViaSat, Inc. common stock ("Common Stock").  Subject to certain exceptions, on the settlement date, March 16, 2005, the Dankbergs will, at their option either (a) deliver up to 125,000 shares subject to the Contract or (b) retain all or a portion of such 125,000 shares and deliver the cash equivalent of any shares s
o retained.  In consideration of the foregoing arrangement, the Dankbergs received aggregate proceeds of approximately $1,731,156. If the closing price of the Common Stock on the settlement date is greater than $15.50, the Dankberg's will be entitled to deliver a lesser number of shares (the value of which is equal to 125,000  multiplied by the difference between such closing price, up to a maximum closing price of $18.60, and $15.50) on settlement of the transaction.</footnote><footnote id="F2">The zeros in the above table are placeholders only that are required by the EDGAR software and should be disregarded.</footnote></footnotes><remarks></remarks><ownerSignature><signatureName>Kathleen K. Hollenbeck, under power of attorney</signatureName><signatureDate>2003-09-17</signatureDate></ownerSignature></ownershipDocument>

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