It turns out that traveling at times when airports are quieter and when flights are less likely to be canceled makes for a less stressful, more enjoyable trip.

According to data from HappyOrNot – the maker of those smiley face customer feedback terminals that are ubiquitous in many airport restrooms – passengers really do find that early morning flights and mid-week departures are better for their overall travel satisfaction.

"As summer approaches and peak travel season begins, airports face growing pressure to deliver smooth, stress-free experiences," HappyOrNot CEO Miika Mäkitalo said in a statement. "We’ve identified key moments when the travel experience tends to break down, enabling operations teams to deploy resources more effectively."

HappyOrNot compiled its data based on more than 9 million traveler inputs at its installations at airports in more than 50 countries during the first quarter of this year.

The company's results can help travelers see when the best time for them to fly is.