How Flexible Dates Can Save You Hundreds on Flights
Date flexibility is the most powerful tool most travellers are not using. Even one day of flexibility on a return flight can cut the price by 40%.
If you have a fixed outbound date but flexibility on your return — or vice versa — you have more pricing power than you might think. Airlines price individual flight legs independently. The Friday evening return from Barcelona is expensive because everyone wants it. The Monday morning return is half the price.
How big is the price difference?
On popular leisure routes from UK airports, the price variation by day of the week for the same route is typically:
- Cheapest outbound days: Tuesday, Wednesday, early Saturday morning
- Most expensive outbound days: Thursday afternoon, Friday evening, Sunday evening
- Cheapest return days: Monday, Tuesday, Wednesday
- Most expensive return days: Sunday, Friday
The difference between the cheapest and most expensive day can be 30–60 % on the same route, same airline, same fare class. On a short-haul route where the return fare is €150, that is a €45–90 difference just for shifting your return by two days.
Calendar view search
The most direct way to use date flexibility is through a calendar view search. Google Flights, Skyscanner, and Kayak all offer calendar views that show the cheapest price for each day on a given route. Instead of comparing two or three specific dates, you can scan an entire month at a glance.
How to use it:
- Set your route (origin and destination)
- Set a rough travel window (e.g. "any weekend in October")
- View the calendar — the cheapest days will stand out immediately
- Build your itinerary around those days, not the other way around
The +/- 3 days search
If you have a preferred outbound date but cannot change it significantly, use the +/- 3-day search. All major flight search engines support this. It shows you whether moving your flight by 24 or 48 hours saves meaningful money.
On FairFares, every deal includes the exact date of the cheap fare so you can see immediately whether that specific date works for you.
Flexibility on return vs. outbound
Most travellers have more flexibility on their return date than their outbound. You need to leave on a specific Friday but could come back any day Sunday to Wednesday. In this case:
- Fix your outbound date, search it as usual
- Search your return leg independently across all available days in your window
- Book the cheapest return day you can actually make work
This one change — flexible return, fixed outbound — is the most practical form of date flexibility for working travellers and frequently produces savings of €40–80 on a standard European return.
Shoulder week travel
If you can shift an entire trip by one week — avoiding a school holiday, a bank holiday weekend, or a major local event at the destination — the savings compound. The outbound is cheaper, the return is cheaper, and hotel prices often drop simultaneously. A two-week holiday shifted one week earlier than peak summer can save hundreds of pounds in flights alone, before the accommodation saving is counted.