Tuesdays, + 1 888 – 838 – 0497 (USA)] What is the cheapest day to book a flight on Delta...

Tuesdays, + 1 888 – 838 – 0497 (USA)] What is the cheapest day to book a flight on Delta Airlines?   Tuesdays, + 1 888 – 838 – 0497 (USA)] What is the cheapest day to book a flight on Delta Airlines? Tuesdays, + 1 888 – 838 – 0497 (USA)] What is the cheapest day to book a flight on Delta Airlines? Tuesdays,…