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

You can discover affordable round-trip American Airlines flights from $308 from SAN to CMI by sorting your results from “Price (lowest to highest)” on Expedia. Or look for options from $174 for a one-way trip.**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.

American Airlines flights to Champaign tend to be more affordable in the quieter months of January and December. Whether you’re after a one-way or round-trip ticket, you could find a better deal then.

Look for affordable American Airlines flights from San Diego Intl. Airport (SAN) to University Of Illinois Urbana-Champaign Williard Airport (CMI) one to three months prior to your departure date. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. No matter the fare class and journey, the ideal day to book a domestic flight is generally Sunday and the most expensive tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**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, press search and select “Nonstop” on Expedia to browse any direct flights from SAN to CMI with American Airlines or another airline.

Filter your results by “Morning” and “Early Morning” to see the earliest flights from SAN to CMI. Heading off early means you’re 20% 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.

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

Depending on the type of fare you purchased, a fee typically applies if you cancel or reschedule your booking more than 24 hours after it has been confirmed. To find plane tickets with more flexibility, select our “Changes included” and “No cancel fee” boxes when looking for flights. For additional information on canceling or modifying your reservation, visit “Trips,” select your flight and tick “Manage Booking.”