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Flights from Milwaukee (MKE) to Greenville-Spartanburg (GSP)
Book flights from Milwaukee to Greenville-Spartanburg with Southwest Airlines®. It’s easy to find the General Mitchell International Airport to Greenville-Spartanburg International Airport / Roger Milliken Field flight to make your booking and travel a breeze. Whether you’re traveling for business or pleasure, solo or with the whole family, you’ll enjoy flying Southwest®. Have flexible travel dates? Plug them into the Low Fare Calendar and see the lowest fares available within your travel window. You may also want to browse Southwest Vacations® to see special offers and package deals on flights, hotels, rental cars, and more.
Explore your options and book your Milwaukee to Greenville-Spartanburg flight with Southwest today!
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Best Airline in the U.S. and North America & Best Economy Class and Low Cost Airline in North America.
During the ongoing COVID-19 pandemic, the availability, health and safety procedures, operations, and schedules for local attractions are changing constantly. Please contact attractions directly for hours of operation, potential temperature screenings, and other possible health and safety procedures and restrictions. Visit our COVID-19 Travel Information page for information about potential restrictions on air travel.
Flight details
Departing from: General Mitchell International Airport (MKE)
Arriving at: Greenville-Spartanburg International Airport / Roger Milliken Field (GSP)
One child over 14 days and under two (2) years of age, not occupying a seat, may be carried free of charge when traveling with an adult (12 years of age or older). Learn more.
Pet policy
Customers flying with a pet are subject to a pet fare. To learn more about traveling with your furry friend, explore the Southwest® pet policy.
Unaccompanied minor
Minors under the age of 18 are not permitted to fly unaccompanied on international flights or any itinerary that includes an international flight. Learn more.
Bags fly free®1
Start packing! Every ticketed Customer’s first two checked bags are free. Learn more.
The Southwest travel experience
At Southwest, we know it takes more than great deals on Greenville-Spartanburg airfares and convenient scheduling options to make your trip memorable. So from booking to boarding, we offer services and features designed to make your travel from Milwaukee to Greenville-Spartanburg the best it can be. Learn more about the Southwest® travel experience before you book your flight from General Mitchell International Airport to Greenville-Spartanburg International Airport / Roger Milliken Field.
Flying with Southwest is simple and fun, no matter which of our dozens of exciting destinations you choose. When you search for your next flight to Greenville-Spartanburg, know that you won’t be surprised at checkout. Low fares and no hidden fees. That's Transfarency®. And as always, two bags fly free®1. Want the latest news, information, and promotional offers from Southwest? Sign up to receive email from us. Looking for tours, activities, and more hidden gems to add to your Greenville-Spartanburg adventure? Explore getaways with Southwest®. Book your flight today and know that you'll earn Rapid Rewards® points when you fly.
1First and second checked bags. Weight and size limits apply.
2Fare difference may apply.
Questions we hear the most
To find the cheapest day and time to fly Milwaukee to Greenville-Spartanburg with Southwest, check out our Low Fare Calendar.
You can rent a car at Greenville-Spartanburg International Airport / Roger Milliken Field—book yours with your flight.
Yes! Flights from Milwaukee to Greenville-Spartanburg—or from here or there to anywhere—can be changed with no change fees. Fare difference may apply.
Check the status of your upcoming Southwest flight here.
