$98 Cheap Spirit Airlines flights Detroit (DTW) to San Juan (SJU)

Apply the “Price (lowest to highest)” filter on Expedia to search for cheap Spirit Airlines return flights from $202 from DTW to SJU. Affordable one-way fares from $98 are also available.**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.

Browse for one-way or round-trip flights to San Juan in October or September. You could find an affordable fare with Spirit Airlines during these off-peak months.

Snagging the best Spirit Airlines deals from DTW to SJU is typically all about timing. You can save 17% on international flights when you book 18 to 29 days before takeoff instead of four to five months ahead. To top it off, you can pocket 17% on average by buying your tickets on a Sunday rather than a Friday, which is often the most expensive day to book.* It’s a good idea to start checking out flights about one month before your departure date.*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.

To figure out if there’s a direct trip from DTW to SJU with Spirit Airlines or any other carriers, check the “Nonstop” box when looking for flights.

To find the earliest departure from DTW to SJU with Spirit Airlines, filter your search by “Morning” and “Early Morning.” Booking an early flight usually means you’ll experience fewer 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.

Luis Munoz Marin Intl. Airport (SJU) is the main San Juan gateway for Spirit Airlines flights from Detroit Metropolitan Wayne County Airport (DTW).

A rewarding loyalty program and the ability to collect points through Free Spirit are the start of the reasons to fly from DTW to SJU with Spirit Airlines. Plus, when you join Expedia’s free One Key™ program, you can receive OneKeyCash™* on top of any airline loyalty program earnings. You can put it toward your future trips.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on your fare type, a fee may apply if you modify or cancel your flight more than 24 hours after it’s confirmed. To secure plane tickets with more flexibility, select our “Changes included” or “No cancel fee” filter when you look for flights. For more information on changing or canceling your reservation, go to “Trips,” select your flight and click on “Manage Booking.”