SEATTLE--(BUSINESS WIRE)--Expedia®’s Fall Travel Outlook, released today, reveals key dates for budget-friendly travel this season. For domestic flights, the lowest fares can be found on September 29 and October 27. International travelers will find the best deals on October 26 and November 24. Overall, airfare is significantly cheaper this fall, thanks to the shoulder season—when travel demand dips between the busy summer and winter holidays, leading to lower prices on both flights and accommo