FILE- In this Nov. 23, 2011, file photo, Jose Mendes sits in line with his daughter Maria Celeste Mendes at an air ticket counter waiting to travel before the Thanksgiving holiday

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FILE- In this Nov. 23, 2011, file photo, Jose Mendes sits in line with his daughter Maria Celeste Mendes at an air ticket counter waiting to travel before the Thanksgiving holiday weekend at Miami International Airport, in Miami. Airlines are making it much more difficult for groups of travelers to sit together, unless they want to pay extra for seats with more legroom or those near the front of the plane. Since last Thanksgiving, American Airlines, Delta, Frontier and United have increased the number of coach seats requiring an extra fee. That means it's much more difficult to find adjacent seats unless passengers pay an extra $25 per person, each way. (AP Photo/ Lynne Sladky, File) less