Cheap Delta flights Colorado Springs (COS) to San Diego (SAN)

Scoring cheap one-way Delta Air Lines flights from COS to SAN on Expedia is simple — just filter by "Price (lowest to highest)." Or check out our affordable round-trip fares for your next exciting vacation.*

*These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.

January is one of the cheapest months to travel to San Diego with Delta Air Lines. You could also find great prices on return and one-way fares in November.

To figure out if there's a direct trip from COS to SAN with Delta Air Lines or other carriers, select the "Nonstop" filter when searching for flights.

San Diego Intl. Airport (SAN) is the main San Diego gateway for Delta Air Lines flights from Colorado Springs Airport (COS).

Depending on the ticket type you purchased, a fee typically applies if you modify or cancel your booking more than 24 hours after it has been confirmed. To find plane tickets with more flexibility, select our "Changes included" or "No cancel fee" filter while searching for flights. For more details on changing or canceling your reservation, visit "Trips," select your flight and click on "Manage Booking."