No U.S. airlines were in the cheapest 50 airlines, which all came in at $0.14 or less. When it came to international travel, the study found that Asian airlines had the lowest cost flights. The cheapest was AirAsiaX, followed by Air India Express, Indonesia AirAsia, Primera Air, and IndiGo Airlines.What is the cheapest day to purchase a flight?
Wednesdays are traditionally the cheapest day to fly, according to a Fare Compare study of historical airfare data. Airlines generally offer sales on all flights during the middle of the week, but Wednesday seems to be the least desirable day to fly.Is there best and cheapest day to buy flights?
According to the CheapAir study, the cheapest days to fly are Tuesday and Wednesday, when you'll save an average of $73 per ticket. Sunday is the most expensive. The Expedia/ARC study found that the cheapest day to travel domestically depends on the airport, but internationally, Thursday and Friday are best.