Cheap Flights from Boulder to Carlsbad: DEN→SAN from HK$854

View HK$854 flight on Thu, 21 Aug 2025Opens in a new window

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Find Cheap Flights from Boulder (DEN) to Carlsbad (SAN)

Prices were available within the past 7 days and start at HK$854 for one-way flights and for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Find the cheapest month to fly from Denver (DEN) to San Diego (SAN)

September is typically the cheapest month to fly

From HK$376 - HK$1,004 per traveller.

Graph displaying average flight prices per month

*Available to Expedia members.