$141 Cheap Spirit Airlines flights St. Thomas (STT) to Newark Liberty Intl. Airport (EWR)

You can discover cheap return Spirit Airlines flights from $226 from STT to EWR by sorting your results from "Price (lowest to highest)" on Expedia. Or look for deals from $141 for a one-way journey.**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.

Search for Spirit Airlines flights from STT to EWR about one month before you want to leave. The cheapest time to book an international flight is generally 18 to 29 days ahead of your departure date when you can save 17% versus booking four to five months in advance. Regardless of itinerary and fare class, the best day of the week to book international airfare is usually Sunday. Friday is often the most expensive. Travelers booking on a Sunday can save an average of 17% compared to those who book on a Friday.**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.

Sort your results by "Early Morning" and "Morning" to see the earliest flights from STT to EWR. Jetting 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.

Journey from STT to EWR with Spirit Airlines and you'll enjoy a range of perks including a rewarding loyalty program. When booking through Expedia as a Free Spirit and One Key™ member, you may also earn OneKeyCash™* to use on select future travel purchases.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.