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 Seattle?

Check the real weather data above for Seattle 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 Denver → Seattle in December

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Flights from Denver to Seattle in December

Planning a trip from Denver to Seattle in December? Find the best flights and seasonal tips. Flight time: 2h 40m.

Flying in December

Seattle typically sees daytime highs around 9°C and overnight lows around 4°C in December, based on the last 3 years. Expect roughly 249 mm of rain across the month.

Nearby airports

Near Denver

Rocky Mountain Metropolitan Airport (BJC)38 km

Near Seattle

Boeing Field King County International Airport (BFI)9 km
Tacoma Narrows Airport (TIW)29 km
Snohomish County (Paine Field) Airport (PAE)51 km

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More about this route

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FAQs — Denver to Seattle in December

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