As in Budget Tip #2, the scheduling of your flight has an influence in the cost, but days of the week are not your only factor, the season of the year plays just an equal part in the cost.
Data Gathering
Data for this test was once again gathered from Kayak.com. Five international one way flights were chosen over round-trip flights due to the huge variance in pricing in the selection of the return date and duration of stay.
The pricing for each day of the week was averaged throughout the week, with a week consisting from Sunday to Saturday. This was done for the five following one-way trips:
1) New York -> London
2) Charlotte -> Rome
3) Denver -> Amsterdam
4) Los Angeles -> Paris
5) Dallas -> Berlin
The first dates calculated where at least one month out from the current date of March 6th to remove the chance of higher prices due t0 short notices. The last dates calculated ending at the end of January due to lack of data further out.
Results
The results from the data gathering is shown below in the graph is displayed as the price variation from the average value. The thick black line is shown as the average between all five flights.
The results show that the pricing from April to mid-August is pretty constant in pricing. However, after the middle of August the prices drop down until the the Christmas-New Years holiday season.
Conclusions
It appears that the cheapest time to fly would be between September and November, with the most expensive time around the Christmas – New Years holiday season. However, this is a preliminary results as it would be needed to be tested to allow to rid of the possibilities of discount prices for early scheduling at a later time so see if the trends hold true.