Https://forum.nexa.org/t/best-day-to-book-cheap-delta-airlines-flights-cheap-flights/1177 https://forum.nexa.org/t/best-day-to-book-cheap-delta-airlines-flights-cheap-flights/1177 https://forum.nexa.org/t/best-day-to-book-cheap-delta-airlines-flights-cheap-flights/1177 https://forum.nexa.org/t/best-day-to-book-cheap-delta-airlines-flights-cheap-flights/1177 https://forum.nexa.org/... https://forum.nexa.org/t/best-day-to-book-cheap-delta-airlines-flights-cheap-flights/1177