$105 Cheap Frontier Airlines flights Chicago (MDW) to San Diego (SAN)

Make use of the “Price (lowest to highest)” filter on Expedia to find cheap Frontier Airlines round-trip flights from $210 from MDW to SAN. Affordable one-way tickets from $105 are available too.**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 Frontier Airlines. You could also find great prices on return and one-way tickets in November.

Look for affordable Frontier Airlines flights from Midway Intl. Airport (MDW) to San Diego Intl. Airport (SAN) one to three months prior to your departure. 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 best day to book a domestic flight is usually Sunday and the most expensive day is typically 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.

Simply enter your dates, hit search and use the “Nonstop” filter on Expedia to browse any direct flights from MDW to SAN with Frontier Airlines or another airline.

Filter your results by “Morning” and “Early Morning” to browse the earliest departures from MDW to SAN. Jetting off 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.

Catch a Frontier Airlines flight from Midway Intl. Airport (MDW) to San Diego, and you’re most likely to come in to San Diego Intl. Airport (SAN). This is the airline’s main hub in this destination.

With a rewarding loyalty program, Frontier Airlines is a popular choice for many passengers flying from MDW to SAN. Plus, as a Frontier Miles and One Key™ member booking through Expedia, you could earn OneKeyCash™* on eligible flights along with your airline miles.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Typically, you can change or cancel your flight, although additional charges may apply if you booked over 24 hours ago. Need to keep your options open? Make use of Expedia’s “Changes included” and “No cancel fee” filters to find flights that won’t charge extra if you have to alter your plans. To make modifications, visit “Trips,” select your flight and click on “Manage Booking” for more information.