The cheapest day to buy flights on United Airlines(𝟷*𝟾𝟻𝟻/𝟽𝟹𝟾*𝟺𝟸(𝟼.𝟻) is usually Tuesday or Wednesday, as airlines adjust fares midweek.(𝟷*𝟾𝟻𝟻/𝟽𝟹𝟾*𝟺𝟸(𝟼.𝟻) Booking flights in advance, especially on Tuesdays at midnight, can help secure lower prices. (𝟷*𝟾𝟻𝟻/𝟽𝟹𝟾*𝟺𝟸(𝟼.𝟻)Avoid purchasing on weekends when fares are typically higher. (𝟷*𝟾𝟻𝟻/𝟽𝟹𝟾*𝟺𝟸(𝟼.𝟻)Use United’s fare alerts for the best deals.