<?xml version="1.0"?>
<ownershipDocument>
    <schemaVersion>X0201</schemaVersion>

    <documentType>4</documentType><periodOfReport>2003-08-13</periodOfReport>
    <issuer>
        <issuerCik>0001001082</issuerCik>
        <issuerName>ECHOSTAR COMMUNICATIONS CORP</issuerName>
        <issuerTradingSymbol>DISH</issuerTradingSymbol></issuer><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0000904548</rptOwnerCik>
            <rptOwnerName>ERGEN CHARLES W</rptOwnerName>
        </reportingOwnerId>
<reportingOwnerAddress><rptOwnerStreet1>5701 S. Santa Fe Drive</rptOwnerStreet1><rptOwnerStreet2/><rptOwnerCity>Littleton</rptOwnerCity><rptOwnerState>CO</rptOwnerState><rptOwnerZipCode>80120</rptOwnerZipCode></reportingOwnerAddress><reportingOwnerRelationship><isDirector>1</isDirector><isOfficer>1</isOfficer><isTenPercentOwner>1</isTenPercentOwner><isOther>0</isOther><officerTitle>Chairman and CEO</officerTitle></reportingOwnerRelationship></reportingOwner><reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001138538</rptOwnerCik>
            <rptOwnerName>ERGEN CANTEY</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>5701 S. SANTA FE DRIVE</rptOwnerStreet1>
            <rptOwnerStreet2></rptOwnerStreet2>
            <rptOwnerCity>LITTLETON</rptOwnerCity>
            <rptOwnerState>CO</rptOwnerState>
            <rptOwnerZipCode>80120</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 Common Stock</value></securityTitle><transactionDate><value>2003-08-13</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>96000</value></transactionShares><transactionPricePerShare><value>6.60</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>A</value></transactionAcquiredDisposedCode></transactionAmounts><postTransactionAmounts><sharesOwnedFollowingTransaction><value>846402</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/><footnoteId id="F1"/></natureOfOwnership></ownershipNature></nonDerivativeTransaction></nonDerivativeTable><derivativeTable><derivativeTransaction><securityTitle><value>Employee Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>6.60</value></conversionOrExercisePrice><transactionDate><value>2003-08-13</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>16707</value></transactionShares><transactionPricePerShare><value>6.60</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2000-03-31</value></exerciseDate><expirationDate><value>2009-02-17</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>16707</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>16666</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction><derivativeTransaction><securityTitle><value>Employee Stock Option (Right to Buy)</value></securityTitle><conversionOrExercisePrice><value>6.60</value></conversionOrExercisePrice><transactionDate><value>2003-08-13</value></transactionDate><transactionCoding><transactionFormType>4</transactionFormType><transactionCode>M</transactionCode><equitySwapInvolved>0</equitySwapInvolved></transactionCoding><transactionAmounts><transactionShares><value>79293</value></transactionShares><transactionPricePerShare><value>6.60</value></transactionPricePerShare><transactionAcquiredDisposedCode><value>D</value></transactionAcquiredDisposedCode></transactionAmounts><exerciseDate><value>2000-03-31</value></exerciseDate><expirationDate><value>2009-02-17</value></expirationDate><underlyingSecurity><underlyingSecurityTitle><value>Class A Common Stock</value></underlyingSecurityTitle><underlyingSecurityShares><value>79293</value></underlyingSecurityShares></underlyingSecurity><postTransactionAmounts><sharesOwnedFollowingTransaction><value>7334</value></sharesOwnedFollowingTransaction></postTransactionAmounts><ownershipNature><directOrIndirectOwnership><value>D</value></directOrIndirectOwnership><natureOfOwnership><value/></natureOfOwnership></ownershipNature></derivativeTransaction></derivativeTable><footnotes><footnote id="F1">The reporting persons indirectly own (1) 13,300 shares as custodian for the reporting persons' minor children; (2) 17,994 and 647 shares, respectively, in the EchoStar Communications Corporation 401(k) Employees Savings Plan (for which the reporting persons are the sole trustees of the approximately 1.7 million shares therein), for which the reporting person has dispositive, but not voting, power; and (3) 110 shares in the name of Cantey Ergen. </footnote></footnotes><remarks/><ownerSignature><signatureName>Charles W. Ergen</signatureName><signatureDate>2003-08-15</signatureDate></ownerSignature><ownerSignature><signatureName>Cantey Ergen</signatureName><signatureDate>2003-08-15</signatureDate></ownerSignature></ownershipDocument>

