FlightCheck for Chrome
Compare more than the fare
See the logistical differences between flights while browsing Google Flights. Reliability data, connection risk, and departure alternatives — right where you book.
Reliability Data on Every Flight
See on-time rates, average delay severity, and cancellation risk right next to the fare — no extra tabs.
Connection Risk Warnings
Booking a connecting itinerary? We'll flag tight layovers and show the miss rate before you click Buy.
Departure Alternatives
Flying from a multi-airport city? See if a nearby airport has better on-time performance for the same route.
Flight Monitoring
Booked your flight? Get a pre-departure briefing with delay risk, weather, TSA wait, and gate info — emailed free.
Extension preview
Coming soon
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In the meantime
FAQ
What does the extension do?
It overlays flight reliability data (on-time rates, delay severity, cancellation risk) directly onto Google Flights search results. You see logistics data next to the fare without opening another tab.
Is it free?
The core reliability overlay will be free. We may offer a premium tier with additional features like connection risk analysis and flight monitoring.
What data does it use?
The same Bureau of Transportation Statistics (BTS) data that powers FlightCheck — real on-time performance reported by airlines to the DOT, updated monthly.
Does it track my browsing?
No. The extension only activates on Google Flights pages. It does not track your browsing history, sell your data, or run in the background on other sites.