Most people think flight prices change over time.
That's half right.
Here's the full picture: every flight has 10 to 26 fare classes available simultaneously. Same seat. Same departure. Same destination. Wildly different prices.
The airline decides which fare classes are "open" (available) on any given day based on demand. When demand is low, they open the cheap classes. When it fills up, they close the cheap ones and you only see the expensive options.
Here's the trick:
Fare classes open and close multiple times before departure. A class that was closed on Monday might reopen on Wednesday because someone cancelled, or because the airline's algorithm decides it needs to stimulate demand for that specific departure.
The savings? $150 to $300 on the exact same flight by booking when the right class is open.
How to use this:
1. Search your route on Google Flights and note the price 2. Set a price alert (Google does this automatically) 3. Check back every 2 to 3 days, especially Tuesday and Wednesday evenings (when many airlines adjust inventory) 4. When the price drops $50+, that's a lower fare class opening. Book it. 5. If you already booked, most airlines let you cancel within 24 hours for free and rebook at the lower price
What we do differently:
Our monitoring system checks fare availability across all classes every few hours, not once a day. When we see a low fare class open on a route we track, we send the alert within minutes. By the time you get a deal alert from us, the low class is confirmed open and bookable.
That's why our deals often disappear within hours. We're catching the window when cheap inventory is available, not just when the airline runs a marketing sale.
The bottom line:
You don't need to become a fare class expert. You just need to know they exist, and that the same flight genuinely costs different amounts on different days. Our job is to tell you which days those are.
Set up free alerts from your airport and let us watch the fare classes for you.