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Do Southwest flights get cheaper closer?

Though Southwest flights typically get more expensive the closer time ticks toward departure, if you keep your eye on the airfare price, you might get a deal.



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To avoid a potential price increase, it's best to book your flight far ahead of time instead of waiting till it's closer to your trip. Google says that if you're booking a domestic flight, the prices are generally at their lowest between 21 and 60 days before your trip.

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The reality is that flight prices change constantly and at all hours of the day, adjusting to real-time demand. Airlines don't restock on the same day every week like a grocery store, so you won't find deals by waiting until Tuesdays to book.

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If Southwest doesn't have the lowest price, it may match a competitors' sale price on the same route, and this will usually occur by 3 p.m. eastern time. Hurry, because most sales – Southwest's and other airlines' – usually end by Thursday night. TIP: Southwest has been known to extend fare sales at the last minute.

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Tuesday Around Midnight is the Cheapest Time to Book
In general, flights were slightly cheaper at midnight earlier in the week (Monday through Wednesday). However, this is only applicable to about 1.6% of U.S. markets, meaning that it's not likely you'll find the same savings on your specific route.

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The concept of booking your flight on a specific day to save a bit of money has become one of the most common pieces of quasi-advice among travelers. But the popular travel myth might be just that — a myth — as flight prices these days depend on demand, not the day of the week.

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Keyes suggests booking your ticket at least 21 days before departure (if possible), since airlines have policies that will substantially raise the price of airfare for trips taking place after that deadline.

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Average domestic airfare price by day
  • Tuesdays and Wednesdays are the cheapest days to fly domestically.
  • Saturday and Monday flights can help you avoid the Sunday rush.
  • Wednesdays and Thursdays are the cheapest day to fly internationally.
  • Book one to three months in advance.
  • Set a price alert.


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Airlines use complicated algorithms to set their pricing [...] The one factor which outweighs all of these and is the ultimate determiner for the price paid: demand, she said. Flight prices are all based on supply and demand, and when demand is high, so are the airfares.

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Find cheap same-day flights Another same-day flight myth is that flying on the same day is always expensive. While so-called “walk-up” prices on certain carriers tend to be higher than advance promotional fares, particularly in domestic sectors, this simply isn't always a set rule.

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Generally, Tuesday, Wednesday and Saturday are the cheapest days to fly, while Fridays and Sundays are pricier, according to travel deal site FareCompare. Leisure travelers tend to fly on the weekends, either starting their vacations on Friday or taking a long weekend Friday to Sunday.

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Average domestic airfare price by day The cheapest days to depart if you're flying within the U.S. are midweek — generally Tuesday or Wednesday. For economy tickets, Tuesdays are about 24% lower than peak prices on Sundays, which translates to savings of about $85 per ticket.

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In the early days of online flight booking, airlines used to manually post their updated prices at a certain time of day each week. This led to the rise of the myth that the cheapest time to book a flight was on Tuesday (and specifically at 3am, many claimed).

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In fact, people who get the first flight in the morning can usually expect a smoother trip, friendlier staff, a cleaner plane and, often, a cheaper ticket. For more TPG news delivered each morning to your inbox, sign up for our daily newsletter. That's right, rising with the lark pays when it comes to air travel.

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