Flight alerts and price trackers work when used correctly. Alerts like route-based, airline-specific, and price thresholds help users track airfares using data from hundreds of airlines and booking systems. Because airfare prices can change multiple times a day, OTAs such as Kiwi continuously monitor fares to keep alerts up to date. This helps travelers better understand price movements and decide when to book.
Types of Alerts: Route, Airline, Price Thresholds
Route-Based Alerts
Route-based alerts let you track a specific route from one destination to the next. If someone wants to travel from Tokyo to Ulaanbaatar but doesn’t really care about the airline or how many stopovers they need to do, they can set a route-based alert. They would then be notified whenever there’s a price change for any flight combination serving that particular route.
Airline Alerts
Airline alerts focus on a single flight rather than a route. They’re a more direct option, letting you select a specific airline, date, and time. You’ll only be notified if there’s an update for that exact option, rather than receiving multiple alerts for different flights on the same route.
Price Thresholds
Customers can use price thresholds to set how much they’re willing to spend on a particular airfare. For example, if someone wants to fly from London to Paris and doesn’t want to pay more than €60, they can set that amount for the price threshold. Then, they’ll only receive an email if the fare drops to €60 or less.
Algorithms Behind Fare Tracking
Fare Monitoring
We constantly check prices across hundreds of airlines and travel partners to provide the best available options to travelers. This is done by reviewing live fares directly on airline sites and connected booking systems that display real-time seat availability.
Historical Price Patterns
Examining historical price patterns for flight routes helps us understand where fares are headed. It makes it easier to spot trends, like when demand usually increases. For example, during the summer school holiday period, ticket prices often go up because more people are traveling.
Price Change Detection
Airfares change constantly, but not every shift is worth notifying you about. When prices go up or down, we double-check the update across multiple platforms to confirm it’s still available. This way, we can avoid showing incorrect fares, so you’re not misled by deals that disappear when checking out.
When Are Alerts Triggered for Customers?
Choosing the right moment to notify customers is important. While some platforms send notifications when airfares reach a certain threshold, you’ll always hear from Kiwi when something is worth your attention. That could be a difference of just a few Euros or something on a much larger scale.
When to Book: Alert vs Best Time Strategy
Price Alerts
People mainly set price alerts for two reasons: 1. They’re unhappy with the current prices, or 2. They just want a good bargain.
With price alerts, you’ll have to start by setting out what you’re willing to pay and stick to it. If the fare drops to that amount, book it immediately. If there’s a large drop that comes close to your target, consider booking anyway, as prices can rise again.
For smaller drops that happen consistently over a few days, decide in advance the price at which you’ll stop waiting and book, and then go for it when it reaches that point.
Remember, while price alerts can save you a lot of money, there are some risks with this strategy. Sometimes, the airfares don’t move at all. In fact, they might even rise. Another thing to be mindful of is that multiple drops can occur within a few hours. So if you’re in bed sleeping and there’s a price movement overnight, you could miss it entirely.
Best Time Strategy
In certain cases, it can be just easier to book at a certain time because, historically, that’s when prices are better. If the data shows that it makes more sense to buy the flights rather than wait, you’re better off doing so.
For people using the best time strategy, 1 to 3 months before a departure often offers the lowest prices. That said, there are a few important exceptions. If you’re flying on busy dates like Christmas Day, book the flights as soon as possible. Those seats are going to sell no matter what, and airlines will most likely bump up the prices the closer it gets to December. The same goes for popular routes, like Jeju (CJU) to Seoul Gimpo (GMP), where flights fill up fast and waiting rarely pays off.
Just like price alerts, the best time strategy isn’t perfect. You might book because the data says it’s a good time, only for prices to drop later if airlines release more seats than expected.
How Kiwi.com Handles Alerts
Kiwi.com’s Price Alerts
Kiwi makes flight tracking easy with its price alert feature, which you can set up in just a few seconds.
Simply search for the route you’re interested in, whether that’s Budapest to Bucharest or Buenos Aires to Mexico City . On the left side of the results page, next to the listed fares, you’ll see a bell icon. Click it to turn on price alerts. From then on, you’ll get an email whenever there’s a fare update on that route, along with suggestions for similar or alternative routes if you’re flexible with your plans.
Customizing for Multi-City or Long-Haul Flights
Monitoring Multi-City Trips
When you book a multi-city trip, each leg is priced separately. For example, a flight from Bangkok to Istanbul with a stop in New Delhi could seem affordable at first. But while the Bangkok–New Delhi segment is cheap, the New Delhi –Istanbul leg could end up costing more. Instead of tracking just one portion of the journey, we monitor the full route so you get a clearer picture of the total cost.
Flexible Dates
Being flexible with your travel dates can unlock better deals. It also allows us to track alternative routes and departure days, especially since some airlines only operate certain flights on specific days of the week. That said, greater flexibility means more price movement, which can result in more frequent alerts and a less predictable price range.
Cabin Classes
Each cabin class is priced differently, from economy through to first class. Because these fares follow separate pricing rules, some OTAs may allow you to set alerts for the specific cabin you plan to fly in. But remember that if you receive an alert for an economy fare and want to upgrade, it will cost more than the original price you were quoted.
Layovers
Including a layover can often lower the overall price of a flight, but it also makes tracking more difficult. Adding an extra stop effectively creates a new route with its own pricing and availability. This is why direct flights are generally easier to track, since there are fewer stops.
How Alert Accuracy and Timing Can Differ for Long-Haul Routes Compared to Short-Haul Flights
Long-haul fares don’t fluctuate as often because fewer carriers operate these routes, so airlines already have a decent idea which way fares will go. As a result, you may receive fewer updates for flights longer than six hours. Short-haul routes, on the other hand, are often served by multiple airlines competing for passengers. This can cause prices to fluctuate several times in a single day as they try to attract customers.
Notification Triggers and Their Accuracy
It’s perfectly reasonable to question whether price alerts can be trusted. After all, you’re relying on OTAs, and if they don’t notify you in time, you risk losing out on the flight you’re waiting for.
At Kiwi, the approach is simple: customers are notified whenever prices update; up, down, small, big, you name it, we have you covered. The goal is to keep you fully informed in real time. You might receive multiple notifications in a day, but the idea is that more updates give you a better chance of bagging savings.
Flight Price Alerts: What You Need to Know Before Prices Move
Why did the prices increase after I set an alert?
Prices increase for many reasons, and setting an alert does not cause it. Airlines use dynamic pricing, which means fares change based on demand, remaining seat inventory, and booking trends. Because prices update frequently, they may rise shortly after you set an alert, but they can also drop again just as quickly.
When I receive notifications like “prices will likely rise soon,” how accurate are they?
These notifications are based on historical pricing data from similar routes and travel dates. Online travel agencies use past trends to suggest what may happen next, but prices can still change unexpectedly. Treat these alerts as guidance rather than certainty, since no tool can predict airfare movements with complete accuracy.
Can price trackers predict flash sales?
No, price trackers cannot predict flash sales. Airlines typically release flash sales with little or no advance notice. Travel platforms only detect price drops after airlines publish them, then notify users. The most effective way to catch a flash sale is to keep price alerts enabled so you are notified immediately when prices change.
Can I turn on price alerts for multiple dates on a particular route?
Yes. Some travel platforms allow you to set alerts for multiple dates on the same route. You must search each date separately and activate an alert for each one. If you have an account, you can usually view all active alerts in one dashboard and receive email notifications whenever prices change.
