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The same flight cost $362 or $162 depending on the day - building a fare calendar from Google Flights

Nonstop Lisbon → Amsterdam, two adults, one way. Same route, same airlines, same week:

Flying on the Wednesday instead of the Monday saves $200 (55%). Google Flights shows this in its date grid, but only for one route at a time and only on screen. I wanted it as data, for many routes, refreshed every day, so I built Google Flights Scraper: Cheapest Dates, Prices & Price History on Apify.

A fare calendar in one input

{
  "routes": ["LIS-AMS", "MAD-ROM", "PAR-BCN"],
  "departureDate": "2026-11-02",
  "numberOfDates": 30,
  "maxStops": "nonstop",
  "cheapestOnly": true
}

cheapestOnly keeps one flight per route and date, the cheapest, so a 30-day calendar for one route is 30 results (about $0.06). Each route also gets a free summary with the cheapest departure date, the most expensive one, the cheapest fare per airline and the full calendar.

City codes cover every airport of a city: PAR includes CDG, Orly and Beauvais, LON all London airports, NYC JFK, Newark and LaGuardia.

Round trips and weekends

{ "routes": ["PAR-BCN"], "departureDate": "2026-11-06", "numberOfDates": 8, "daysBetweenDates": 7, "tripLengthDays": 2, "adults": 2 }

That’s every Friday-to-Sunday weekend for two months. Prices are totals for all passengers (round-trip totals for round trips), with pricePerPassenger alongside.

More than the price

Each flight comes with flight numbers, times, duration, stops and layover durations, aircraft, legroom, and CO2 emissions compared with the typical flight on the route. A real one:

{
  "route": "PAR-BCN",
  "price": 106,
  "airline": "Vueling",
  "flightNumbers": ["VY 8061"],
  "departure": "2026-11-12T09:50",
  "arrival": "2026-11-12T11:45",
  "stops": 0,
  "aircraft": ["Airbus A320"],
  "co2Kg": 88,
  "co2TypicalKg": 84,
  "priceLevel": "typical",
  "typicalPriceLow": 50,
  "typicalPriceHigh": 130
}

priceLevel says whether the fare is low, typical or high compared with Google’s typical range for that trip. When Google shows them, the summary also includes about 60 days of price history and the train alternative (Paris → Barcelona: 6 h 50 by train, departing Gare de Lyon).

Alerts

Add a monitorName, schedule the Actor every morning, add a Telegram, Slack, Discord or webhook target, and you get an alert when a fare drops by more than alertOnPriceDropPct (10% by default).

Input templates and sample outputs: github.com/EuroScrape/apify-actors.

Part of the EuroScrape actor collection — all articles.