How to use flexible dates without comparing the wrong fares
Use historical observations as a starting point, then verify the actual itinerary.
Read the calendar as a reference
The calendar can show recent historical economy observations in USD for compatible city routes. Green means lower observed prices within the comparable date set; orange means medium and red means higher. Equal amounts stay in the same band. Missing or incompatible observations leave dates neutral.
Keep the comparison consistent
For a return journey, hold one date fixed while comparing the other. A different return date can describe a different trip. For multi-city travel, each leg’s calendar is independent: adding those observations does not produce a bookable itinerary price.
Use the actual offer to decide
Select dates that work for you and run the normal flight search. The booking provider confirms current availability and pricing for your travellers and cabin. If no trend data appears, you can still select dates and search normally. We do not convert the historical USD observations into other currencies.