What's the cheapest day to fly in December?

We don't have enough real fare data for December to identify a cheapest weekday.

Is December a good time to visit Lisbon?

Check the real weather data above for Lisbon in December — we don't have crowd or event data to add beyond that.

Should I book now or wait?

There's no reliable way to predict whether a specific fare will rise or fall. If the real December fares above already fit your budget, booking removes the risk of the price changing.

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Search Chicago → Lisbon in December

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Flights from Chicago to Lisbon in December

Planning a trip from Chicago to Lisbon in December? Find the best flights and seasonal tips. Flight time: 8h 04m.

Flying in December

Lisbon typically sees daytime highs around 15°C and overnight lows around 9°C in December, based on the last 3 years. Expect roughly 63 mm of rain across the month.

Nearby airports

Near Chicago

Chicago Midway International Airport (MDW)25 km
Gary Chicago International Airport (GYY)57 km
Michigan City Municipal Airport (MGC)95 km

Near Lisbon

Cascais Airport (CAT)20 km

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More about this route

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FAQs — Chicago to Lisbon in December

We don't have real fare data for December on this route yet — use the search box above for live prices.