FlightGlass Google Flights

Google Flights decision workspace: true cost, connection risk, comfort and schedule quality. Local-first, optional AI.

FlightGlass Google Flights reads the flight results already on your Google Flights page and answers the question the headline price cannot: which of these is actually right for this trip? WHAT IT SHOWS YOU True cost, as a range. The fare plus the bags, seats and fees that apply to your profile — with every line labelled verified, estimated, possible or unknown. Connection concern, explained. Every factor that raised or lowered it is listed: ground time against your own buffer, terminal changes, immigration on the way through, whether bags are likely re-checked. FlightGlass never says "safe" or "unsafe", and never claims to know an airline's official minimum connection time. Schedule and body-clock impact. Time zones crossed, direction of travel, red-eye detection and whether the arrival time is actually usable — computed from real airport time zones, not guessed from the clock. Comfort, with its confidence. Typical seat pitch resolved through a four-level lookup, and told plainly when the answer is only generic. Aircraft change after booking, and FlightGlass says so rather than pretending otherwise. Itinerary traps. Self-transfer, separate tickets, airport changes, overnight connections, wrong-day arrivals, date-line crossings. Countries you cannot transit. List the countries you have no visa for, and any itinerary routing through one is flagged. It reports the routing; it never tells you what a visa rule is. Long layovers as an opportunity. If you would happily spend a day in the connecting city, set a minimum and filter for exactly those flights. Side-by-side comparison of up to five itineraries, with a plain-language "what am I paying extra for?" and a printable export. Local observation history. What this browser saw, phrased that way — never presented as market data. HOW IT WORKS Everything above runs on your device. No account, no server, no subscription, no telemetry, and no API key required. Open a Google Flights results page and the panel fills in. OPTIONAL AI Connect your own provider key — OpenAI, Anthropic, Gemini, Groq, DeepSeek, MiniMax, a local Ollama endpoint — or use Chrome's built-in on-device model where available. AI explains the calculation and can argue with its weighting; there is no code path from a model response to a number. Every feature above works without it. Your key is stored in session storage by default and is never sent to the Google Flights page, never logged, and never included in an export. Before anything is sent, you can read the exact payload. HONEST ABOUT ITS LIMITS Some data ships deliberately empty. Airline baggage fees, on-time statistics and layover facts change constantly, so FlightGlass reports "unknown" and links to the airline's own policy page rather than showing a plausible-looking guess. You can import a sourced data pack if you have one; an example file is included so the format is copyable. It cannot watch prices while your browser is closed, because there is no server to do it. It records what it sees when you visit, and tells you what changed since. It reads the page Google renders. It does not use private Google APIs, and a layout change on Google's side can reduce what it recognises — the panel says so when that happens, and includes a sanitised diagnostic you can send. Bilingual: English and Spanish. FlightGlass is an independent tool. It is not made by, affiliated with, or endorsed by Google.