We all know the saying: Travel is good for the soul.

But its not particularly good for the wallet.

For two people, that number jumps to $3,982.

A father carries his on on his shoulders as they walk through the airport.

Frontier’s new summer pass gets youunlimited flightsfrom May to September for only $699.

When Is the Best Time to Buy Plane Tickets?

Thats shorter than it used to be.

Booking one to two weeks from your departure date can cost about 26% more on average.

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Waiting until the week of your trip might cost you about 59% more.

While planning ahead is best, it’s possible for you to get penalized for buying airfare too early.

No matter the time of year, flying out on Tuesdays or Wednesdays will usually result in better deals.

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Avoid Sundays, which tend to be the most expensive day of the week for flights.

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Why Do Airline Ticket Prices Fluctuate Throughout the Year?

The price of plane tickets tends to go up and down throughout the year based on seasonal demand.

Airfare tends to be the highest in November and December correlating to the spike in travel for the holidays.

Flights are also costly in June, July and August as many people plan vacations during the summer.

January and February are generally the cheapest months to travel, as demand is lower.

Tuesdays and Wednesdays tend to be the cheapest days for domestic and international flights.

6 Tips for Finding the Best Airline Prices

1.

Some of the best search engines for flights include:

2.

Use this feature to start tracking flight prices months ahead of time.

Book Group Travel Separately

Airlines sometimes charge a premium for selecting your seat.

You could wind up paying extra if you want to sit next to your traveling companions.

Fly on Weekdays or on a Holiday

Tuesdays and Wednesdays are usually the cheapest days to fly.

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Nicole Dow is a former senior writer at The Penny Hoarder.

Senior Writer Mike Brassfield contributed to this article.