Data collected from Thanksgiving week 2014 was used to rank the most sluggish cities in the U.S.

These are the cities that have the worst holiday traffic:

  1. Los Angeles, California
  2. Washington, D.C.
  3. San Francisco, California
  4. Philadelphia, Pennsylvania
  5. Dallas, Texas
  6. New York, New York
  7. Chicago, Illinois
  8. Houston, Texas
  9. Austin, Texas
  10. Miami, Florida
  11. Tampa, Florida
  12. Denver, Colorado
  13. Portland, Oregon
  14. Charlotte, North Carolina
  15. Seattle, Washington
  16. Detroit, Michigan
  17. Boston, Massachusetts
  18. Pittsburgh, Pennsylvania
  19. St. Louis, Missouri
  20. Honolulu, Hawaii
  21. Providence, Rhode Island

Google also found that the worst time to travel is the afternoon before Thanksgiving between 3 and 5 p.m. The second worst day to travel is the Saturday after Thanksgiving, when most families hit the road to return home. Traffic on that Saturday is 40 percent worse than Sunday. Google suggests commuters wait to travel until Sunday.

The search engine also identifed areas that create the most traffic during Thanksgiving week.

On the day before Thanksgiving, running to get ham, pie or liquor at the last minute will yield very long lines. On Thanksgiving, buffet restaurants, movie rentals shops and kiosks and outlet malls are the most crowded places. And -- to no surprise -- the most popular places on Black Friday are electronic stores, outlet malls, appliance stores and Christmas tree farms.

Read more here and find out how to make the most of your travel time on Thanksgiving here.