: While airlines once consistently released sales on Tuesdays, modern dynamic pricing makes deals pop up sporadically. Recent data from Expedia has shifted the "best day to book" recommendation to Sunday for international routes. Savings by Departure Day

Often the best day for international flyers according to Expedia Most Expensive Highest demand from leisure and business travelers Practical Travel Tips These are the best times to buy an international flight

: On average, the lowest fares for Europe appear about 129 days (roughly 4 months) before departure.