$381 Cheap Delta flights San Francisco (SFO) to St. Thomas (STT)

Finding cheap one-way Delta Air Lines flights from SFO to STT from $381 on Expedia is easy — just filter by “Price (lowest to highest).” Alternatively, check out our budget-friendly round-trip fares from $765 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.

Search for one-way or return flights to St. Thomas in September or October. You could find cheaper fares with Delta Air Lines during these off-season months.

To grab affordable flights from SFO to STT with Delta Air Lines, begin your search about one month before your intended departure. You can save 17% when you book your international tickets 18 to 29 days ahead instead of booking four to five months in advance. Another helpful tip? Booking on Sunday offers average savings of 17% compared to Friday (the most expensive day).**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.

Enter your dates, click search and check the “Nonstop” filter on Expedia to find any direct flights from SFO to STT with Delta Air Lines or another airline.

Find Delta Air Lines’s earliest flights from SFO to STT by selecting our “Morning” and “Early Morning” filters. Not only will you arrive sooner, early departures also have a 20% less chance of being canceled.**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.

Jump on a Delta Air Lines flight from San Francisco Intl. Airport (SFO) to St. Thomas, and you’re most likely to touch down at Cyril E. King Airport (STT). This is the airline’s primary hub in this city.

Delta Air Lines makes flying from SFO to STT enjoyable with a rewarding loyalty program and an excellent in-flight experience. You may even earn points with Delta SkyMiles. Remember to join Expedia’s free One Key™ rewards program to earn OneKeyCash™*, which can be redeemed on future bookings.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.

Depending on the type of ticket you purchased, a fee generally applies if you change or cancel your booking more than 24 hours after it’s confirmed. To secure flexible plane tickets, select our “Changes included” and “No cancel fee” boxes while looking for flights. For additional information on canceling or modifying your reservation, go to “Trips,” select your flight and click on “Manage Booking.”