Content and coverage: The US-airlines dataset is a 10 percent sample of all tickets sold on the US market taken in each quarter, starting with 2010.
**Raw data** needs to be downloaded from US [Department of transport](https://www.bts.gov/topics/airlines-and-airports/origin-and-destination-survey-data). It's over 15GB.
If you have a problem getting it, feel free to contact us.
Re data wrangling, wee detailed data description on the [textbook website, airline data](https://gabors-data-analysis.com/datasets/airline-tickets-usa/).