$61 Cheap Spirit Airlines flights Milwaukee (MKE) to San Diego (SAN)

Scoring cheap one-way Spirit Airlines flights from MKE to SAN from $61 on Expedia is easy — just filter by “Price (lowest to highest).” Or check out our affordable return fares from $117 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 fly to San Diego with Spirit Airlines. You could also find excellent prices on return and one-way fares in November.

To find cheap Spirit Airlines fares from General Mitchell Intl. Airport (MKE) to San Diego Intl. Airport (SAN), start searching one to three months before your intended 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 is typically the most affordable, while Monday is often the most expensive for domestic flights. You can save 6% on average by booking your trip 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.

Simply enter your dates, click search and select “Nonstop” on Expedia to browse any direct flights from MKE to SAN with Spirit Airlines or other airlines.

To find the earliest departures from MKE to SAN with Spirit Airlines, filter your search by “Morning” and “Early Morning.” Choosing an early flight usually 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.

San Diego Intl. Airport (SAN) is the primary San Diego hub for Spirit Airlines flights from General Mitchell Intl. Airport (MKE).

A rewarding loyalty program and the ability to rack up points through Free Spirit are the start of the reasons to depart from MKE to SAN with Spirit Airlines. Plus, when you sign up to Expedia’s free One Key™ program, you can earn OneKeyCash™* alongside Spirit Airlines’s loyalty program earnings. It’s yours to spend on future travel plans.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

It’s generally possible to cancel or modify your flight, although there may be additional fees if you booked more than 24 hours ago. Want to keep your options open? Use Expedia’s “Changes included” or “No cancel fee” filter to find flights that won’t charge extra if you need to alter your plans. To update your itinerary, visit “Trips,” select your flight and click on “Manage Booking” for more details.