| Clue | Source | Date |
|---|---|---|
| Boon for air travelers | Wall Street Journal | 29 Aug 2020 |
| It may improve your cost of leaving | Newsday | 10 Aug 2019 |
| Airlines' price-cutting battle | Thomas Joseph | 01 Jan 2019 |
| Competition between airlines | Thomas Joseph | 03 Mar 2018 |
| Airline competition | Thomas Joseph | 24 Nov 2017 |
| Airline news | ||
| Travel incentive |