These are the airports with the most delays during last year's Christmas travel period — this year is expected to be even busier

• The Christmas and New Years holiday week is almost here, and it's expected to be one of the busiest holiday travel periods ever. The AAA is predicting 6.97 million people will fly in the US.
• Unfortunately, the crowds, combined with unexpected winter weather, can be a recipe for mass delays.
• AirHelp — a company that helps passengers get compensation when their flights are delayed or cancelled — looked through travel data from Christmas 2018 to see which airports had the most flight disruptions.
• While this is last year's data, it can help give a sense of what to expect going into this year's holiday season. Scroll down to see the most delayed major airports during Christmas 2018.
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10. Seattle-Tacoma International Airport (SEA)

9. San Francisco International Airport (SFO)

8. John F. Kennedy International Airport (JFK)

7. Houston George Bush Intercontinental Airport (IAH)

6. Charlotte Douglas International Airport (CLT)

5. Denver International Airport (DEN)

4. Dallas Fort Worth International Airport (DFW)

3. Los Angeles International Airport (LAX)

2. Atlanta Hartsfield-Jackson International Airport (ATL)

1. Chicago O'Hare International Airport (ORD)