What is a flight price alert?
A flight price alert is a saved search that keeps checking a route on your behalf and tells you when something changes, so you don't have to look yourself. In principle that's simple. In practice, what counts as "something worth telling you about" varies enormously between tools, and that difference is most of what makes one alert useful and another one just noise.
Why most price alerts turn into noise
The default behaviour for most alert tools is to notify you whenever the price moves by any noticeable amount, in either direction. That sounds helpful until you're actually receiving it: a string of "price changed" emails that don't tell you whether now is a good time to book, just that something happened. We go into this in more detail in How Flight Price Alerts Actually Work - the short version is that an alert reporting every fluctuation is barely different from one reporting nothing useful at all.
What a useful flight price alert actually needs
A price alert only does its job if it's built around four things: the exact route you'd fly, how flexible you are on dates, what cabin and stop count you'd accept, and a real number you'd be happy to pay. Get any of those wrong and the alert either fires too often to be useful, or misses the flight you'd have actually taken.
Date flexibility matters more than most people account for - see Flight Alerts for Flexible Travel Dates. And "target price" needs to mean an actual number you've committed to, not a vague drop - see Set a Flight Price Target and Only Hear From Us When We Find It.
How milo does it
Milo asks for all four of those upfront - route, date window, cabin and stops, and your target price - and then stays quiet until that exact combination is real. No daily digest, no "price changed" pings. One notification, when there's actually something worth booking.
That's the whole idea behind milo: set it once, and only hear from us when it's actually worth hearing from us. It runs on the same live flight data Google Flights uses, on a fully automated schedule that never sleeps, so there's no human checking (or forgetting to check) on your behalf.
Frequently asked questions
What's the difference between a price alert and a price tracker?
They're often used interchangeably, but a tracker usually just shows you a price history so you can judge it yourself, while an alert acts on your behalf and tells you when a specific condition is met. Milo does both - it shows you price context, and it only interrupts you when your target is reached.
Will I get notified for every price change?
No. Milo only sends a notification when a flight matching your criteria reaches your target price. Ordinary price movement in between doesn't generate anything.
Does this work for one-way and round-trip flights?
Yes, both are supported when you set up an alert.
Is there a free way to try it?
Milo has a free tier with 200 credits and no card required, so you can set up an alert and see how it works before you pay for anything.
Where do milo's flight prices come from?
The same live flight search data Google Flights uses - both airline-direct fares and third-party resellers. If a price exists on Google Flights, milo can see it too.
Does someone have to manually check for me?
No. Milo runs entirely on an automated schedule, scanning your routes around the clock without a person triggering or reviewing anything - it never sleeps, and neither does the checking.