Published: Feb 04, 2011 7:53 PM EST
Updated: Feb 04, 2011 4:53 PM EST

DALLAS (AP) - Another blast of winter weather slammed Dallas with up to 5 inches of snow Friday, making driving hazardous and prompting the cancellation of hundreds of flights as tens of thousands of football fans descended on the city for the Super Bowl.

North Texas was still struggling to recover from Tuesday's ice storm, part of a massive system that paralyzed a large swath of the country with blizzards, thundersnow and bone-chilling temperatures this week.

 The National Weather Service issued a winter storm warning Friday for Arlington, home of the $1.3 billion Cowboys Stadium where the Pittsburgh Steelers and the Green Bay Packers are set to face off this weekend. Forecasters expect a mostly sunny Super Bowl Sunday with highs in the 40s, and organizers said last week that the retractable roof of $1.3 billion stadium will be closed.

Nevertheless, the weather was causing travel problems for die-hard fans Friday.

American Airlines and its affiliate, Eagle, cancelled more than 300 flights that were supposed to land at its main hub, Dallas-Fort Worth International Airport. City aviation spokesman Jose Luis Torres said Love Field, home to Southwest Airlines, was shut down at around 3 a.m. because of snow on the runways. The airport was expected to resume full operations by noon.

Sammy Sandu, a 32-year-old property developer from Kelowna, B.C., and his father made it to Dallas Thursday before the latest snowfall, but other members of their party weren't so lucky.

Sandu's brother was still hoping to get in from Miami, while his friend essentially abandoned travel plans after an American Airlines flight from Vancouver was canceled.

Sandu had hoped to visit the JFK assassination site and attend several parties - he said his brother spent $1,500 on party tickets - but that all those plans were on hold.

 "It looks like, `Oh, no, I'm back in Canada,"' Sandu said. "It's just pouring down snow. Are we still at home, or have we left? We didn't drink that much last night, did we?"

Dallas was feeling the chill with the mercury resting at about 20 Friday, forcing organizers of at least one celebrity-filled Super Bowl event to move their Saturday celebrations inside. But the chilly temperatures were not expected to faze the teams competing in the real event, nor their fans; The temperature Friday in Pittsburgh stood at 20, while Green Bay was a slightly lower 17.

 Steelers coach Mike Tomlin said the weather hasn't bothered the team.

"We're kind of used to inclement weather," Tomlin said. "At least from my perspective, it hasn't changed how we've worked at all."

Neighboring Oklahoma, still recovering from up to 20 inches of snow earlier this week, meanwhile braced for yet more. National Weather Service meteorologist Cheryl Sharp in Norman said snow began falling about 2:30 a.m. Friday and total accumulation could reach three to four inches in southeastern Oklahoma. Roads in the area are slick and yet more snow was forecast for Sunday.

Freezing rain and sleet also caused havoc further south, making roads across Louisiana, Alabama and Mississippi slick and leading to at least five fatal traffic accidents.

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Associated Press writers Paul Weber in Corpus Christi, Texas and Diana Heigerd in Dallas contributed to this report.

(Copyright 2011 by The Associated Press. All Rights Reserved.)