US: Southwest, American Airlines issue travel warnings ahead of storm

Southwest and American Airlines have issued travel warnings ahead of winter storm Isaiah, which could pose travel problem in Southern US states. The storms are expected to bring tornadoes, large hail, flooding and high winds through North Texas. It is expected to bring snow and ice to parts of the Plains, Great Lakes and New England on Saturday. American Airlines said that people traveling to, from or through Dallas-Fort Worth International on Saturday may be eligible to make a one-time change to their ticket for free. While Southwest is also allowing passengers to rebook their flights without an additional charge.