$174 Cheap American Airlines flights Champaign (CMI) to San Diego (SAN)

Make use of the “Price (lowest to highest)” filter on Expedia to look for cheap American Airlines round-trip flights from $308 from CMI to SAN. Affordable one-way fares from $174 are also on offer.**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 least expensive months to travel to San Diego with American Airlines. You could also find excellent prices on one-way and round-trip tickets in November.

To find cheap American Airlines fares from University Of Illinois Urbana-Champaign Williard Airport (CMI) to San Diego Intl. Airport (SAN), start searching one to three months before your planned departure. Securing domestic flights 34 to 86 days in advance could save you 25% compared to booking just 6 to 12 days ahead. The day you book can also affect the price you pay. Sunday tends to be the cheapest, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your flight on a Sunday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC’s global airline sales database.

Enter your dates, click search and check “Nonstop” on Expedia to browse any direct flights from CMI to SAN with American Airlines or another carrier.

Filter your results by “Early Morning” and “Morning” to browse the earliest departures from CMI to SAN. Leaving early means you’re less likely to experience cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG’s global flight data platform.

Get on an American Airlines flight from University Of Illinois Urbana-Champaign Williard Airport (CMI) to San Diego, and you’ll likely touch down at San Diego Intl. Airport (SAN). This is the airline’s primary hub in this city.

It’s usually possible to reschedule or cancel your flight, although there may be additional fees if your booking was made over 24 hours ago. Prefer to keep your options open? Use our “No cancel fee” or “Changes included” filter to find flights that won’t charge you extra if you have to alter your plans. To update your itinerary, visit “Trips,” select your flight and click on “Manage Booking” for more information.