These Are the Worst Airlines and Airports to Use for Thanksgiving Travel

Tomorrow, the Wednesday before Thanksgiving, is known as one of the busiest travel days of the year. For those headed to the airport, you might want to take a look at the airline on which you're flying and its history of delays, just to set your expectations straight.

Gizmodo analyzed six years of historical data from the Research and Innovative Technology Administration Bureau of Transportation Statistics to compile a list of the largest airlines ranked by their delays for Thanksgiving travel. It even included the average delay time.

JetBlue Airways was the worst offender with 15 percent of its flights late for an average of 42-minute delays. Southwest Airlines came in next, also with 15 percent of its flights being late but the average delay was 40 minutes.

JetBlue was at the top of Gizmodo's list for percentage of flight delays with the longest average delay time for the number of flights that were late. (AP/Seth Wenig)

Here's who else was on the list, in order of percentage of flights delayed, but check out Gizmodo's page for full details: Alaska Airlines, Delta Air Lines, American Airlines, US Airways and United Airlines.

Delays aren't the only thing that make air travel aggravating, especially during the holidays. The airports you're traveling through can make a big difference on your experience as well. Bloomberg's Businessweek ranked 36 airports by overall level of frustration. The top 10 are: New York LaGuardia, Newark International Airport, Washington Dulles, Chicago O'Hare, New York John F. Kennedy, Los Angeles International, Toronto Pearson, Dallas-Fort Worth International, Miami International and Philadelphia International.

In this Oct. 30, 2014, file photo, passengers line up to pass through security before boarding flights at John F. Kennedy International Airport in New York. A nor’easter is expected to develop along the East Coast just as millions of travelers head to their Thanksgiving destinations, bringing mostly rain close to the coast, but heavier snow further inland. The exact track and severity of the storm has meteorologists on alert. (AP/Mark Lennihan)

Bloomberg broke down its list even further based on airport commute times, time at the terminal and more.

A snowstorm forecast to hit Wednesday and Thursday could also cause delays at Northeast airports and highways.

Brace yourself.

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The Associated Press contributed to this report.