| https://fcs.tennessee.edu/wp-content/uploads/sites/23/formidable/5/qatar-made-simple.pdf |
| https://fcs.tennessee.edu/wp-content/uploads/sites/23/formidable/5/qatar-rep-talk-straight.pdf |
| https://airlinehelpsupportdesk.zohodesk.com/portal/en/kb/articles/american-airlines-check-in-1-866-838-4934 |
| https://airlinehelpsupportdesk.zohodesk.com/portal/en/kb/articles/american-airlines-check-in-a-complete-guide-for-smooth-travel |
| https://airlinehelpsupportdesk.zohodesk.com/portal/en/kb/articles/1866-838-4934-how-do-i-check-in-for-american-airlines |
| https://airlinehelpsupportdesk.zohodesk.com/portal/en/kb/articles/online-check-in-american-airlines |
| https://airlinehelpsupportdesk.zohodesk.com/portal/en/kb/articles/1866-838-4934-how-long-before-a-flight-can-you-check-in-with-american-airlines |
| https://airlinehelpsupportdesk.zohodesk.com/portal/en/kb/articles/delta-airlines-check-in-a-complete-guide-for-smooth-travel |
| https://airlinehelpsupportdesk.zohodesk.com/portal/en/kb/articles/1866-838-4934-how-do-i-check-in-to-my-flight-delta |
| https://airlinehelpsupportdesk.zohodesk.com/portal/en/kb/articles/how-can-i-check-in-for-my-delta-air-lines-dl-flight |
| https://airlinehelpsupportdesk.zohodesk.com/portal/en/kb/articles/1866-838-4934-what-is-the-new-delta-rule-for-checked-bags |
| https://airlinehelpsupportdesk.zohodesk.com/portal/en/kb/articles/delta-s-new-baggage-policy-plan-your-airport-arrival-accordingly |
| https://portofedmonds.gov/wp-content/uploads/formidable/47/british-airways-check-in-passenger-guide.pdf |
| https://portofedmonds.gov/wp-content/uploads/formidable/47/check-in-delta-air-lines.pdf |
| https://portofedmonds.gov/wp-content/uploads/formidable/47/check-in-frontier-airlines-website-faqs.pdf |