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An Air Canada plane taxies on the snowy runway at Heathrow airport in west London on January 21, 2013 after the airport announced further flight cancellations due to adverse weather. London's Heathrow Airport warned of further flight cancellations on January 21 which would leave thousands more passengers stranded on the fourth day of delays after heavy snow swept across Britain.
An Air Canada plane taxies on the snowy runway at Heathrow airport in west London on January 21, 2013 after the airport announced further flight cancellations due to adverse weather. London's Heathrow Airport warned of further flight cancellations on January 21 which would leave thousands more passengers stranded on the fourth day of delays after heavy snow swept across Britain.

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    Thick snow causes European travel delays

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Thick snow causes European travel delays

CNN's Erin McLaughlin speaks to Richard Quest from Heathrow Airport, where more than 200 flights have been canceled.

Thick snow causes European travel delays

CNN's Erin McLaughlin speaks to Richard Quest from Heathrow Airport, where more than 200 flights have been canceled.