Https://www.oig.dc.gov/sites/default/files/webform/rafp_online_complaint_form/_sid_/What%20is%20the%20cheapest%20day%20to%20book%20an%20Air%20Canada%20flight%20%281%29.pdf https://www.oig.dc.gov/sites/default/files/webform/rafp_online_complaint_form/_sid_/What%20is%20the%20cheapest%20day%20to%20book%20an%20Air%20Canada%20flight%20%281%29.pdf https://www.oig.dc.gov/sites/default/file... https://www.oig.dc.gov/sites/default/files/webform/rafp_online_complaint_form/_sid_/What%20is%20the%20cheapest%20day%20to%20book%20an%20Air%20Canada%20flight%20%281%29.pdf