PORTLAND Millions of Northwest residents heading out for the holidays were faced with wintry weather that threatened travel plans.

Around 30 percent of people in the Northwest were planning on traveling during the holiday, according to AAA. Nearly 90 percent of those travelers were driving.

ForecastITraffic I Radar

A cold front bringing rain to the region could tie up roadways, according to KGW meteorologists. The snow levels will likely remain around 4,000 feet, which should keep the Government Camp mountain pass in good shape for driving but bring inclement weather to parts of Santiam pass.

Although driving was the most popular choice for transportation, many who were flying for the holidays saw their flights delayed or canceled due to storms in the Midwest and the East Coast.

More: Dozens of planes delayed or canceled at PDX

As of Monday, the weather was not threatening Amtrak train schedules in the Northwest.

No matter your travel plans, Northwest residents should prepare for traffic tie-ups and crowded airports Monday and Tuesday as they join nearly 16 million people in the Pacific region traveling for the holidays.

Related: AP Interactive: Foul weather could be trouble for travelers

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