There is a mother her son go to pick up her father at the air port and the three of them find a man he stays for christmas.

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Some Americans find themselves stranded in a cold and snowy place with Communist soldiers trying to capture or kill them. The Americans are not soldiers so they find and use pipes to shoot through whenever a Communist soldiers passes in front of the opening.

The Most Wonderful Time of the Year (2008 TV movie)
IMDb review:
With these type of movies, the romantic leads don't always have chemistry, but Brooke Burns and Warren Christie have boatloads of it. The story is cute and uncomplicated: The uncle (Henry Winkler) of an impossibly beautiful single mother shares a flight with an impossibly beautiful guy in his 30s who can't seem to settle down in one place. Several snowstorms and canceled flights later, the uncle convinces his niece to allow the stranger to stay with them "for just one night" until the airport reopens. One night turns into two, etc, due to some finagling by the uncle who is convinced that this man is good for his niece. He is considerate, kind and helpful with household chores and is wonderful with her son. He really helps Jen to find the "Christmas Spirit" so to speak. Not helping matters is that Jen has a boyfriend who is a self-centered jerk complete with $800 shoes and completely stuck-up parents. He is awful with her son and is responsible for the plot point that eventually drives Morgan and Jen together.

The Most Wonderful Time of the Year (TV Movie 2008) - IMDb