There is currently no ferry service between St Thomas and St Croix and hasn't been for a couple of years. There is no indication when and if such ferry service will resume and the only option is air transport, primarily with Seaborne or Cape Air. The advantage of staying on St Thomas or St John is the easy ferry service available between these two islands as well as ferry service from both to the British Virgin Islands (passports required). You can find the ferry schedules and rates here:

https://www.vinow.com/general_usvi/interisland_ferry/

Thanks so much for the response. Ok, so if we stay on St. Croix we are there for the week. We'll have to make that decision either St. Croix or St. Thomas.

Hello lisal,

I have done the split time on St Thomas and St Croix and it was wonderful and I would not rule it out just yet. I forget how much the ferry was when it was running, but if you keep watching seaborne you can find good deals on the seaplane and that in itself is very cool and it should not be too much more than the ferry was. What we did is we booked one way flights with AA and it was the same price if we would have done a round trip. We booked a one way into St Thomas, then after a few days took the seaplane over to St Croix and had our return trip out of St Croix. That way you only have to pay for the one way seaplane ticket.

It turned out to be incredible and I highly recommend it if you can fit it into your budget. Again, I don't believe the one way seaplane ticket was that much more than the ferry.

beer wrote: Again, I don't believe the one way seaplane ticket was that much more than the ferry.

The ferry was $50, the airfare is I believe anywhere from $100 to $150 one way. But take into account that the ferry was affectionately known locally as "The Barf Barge" or "The Vomit Comet"! 😀

If you pack correctly it should be around $85, plus their Facebook page and emails sometimes has deals.

Here's a link which can help the OP decide the best course of action based on cost, etc.:

http://www.seaborneairlines.com/destinations/st-croix-usvi/

You can also see Cape Air options here:

https://www.capeair.com/flying_with_us/Caribbean_Airports.html

Purely my personal opinion but with only one week at your disposal I wouldn't split the week. Such a short visit can only give you a taste of what's available in the USVI on any one island. Have a wonderful vacation whatever you decide to do!

Staying in STT does give you more options for expoloring other islands such as St. John, Tortola, Jost Van Dyke and Virgin Gorda, for example, all for day trips. You could also take the seaplane over to STX on a day trip. Have fun and ejoy whichever you choose to do.

For a 7 day trip, I suggest you stay put and "get all the good" out of STT. Maybe a day trip or two over to STJ.

Thanks so much "Beer", "STT Resident" and "Alana33" for your replies. This was exactly the type of information I was hoping for which would give me some insight as to whether or not it even makes sense to split our trip between 2 islands. My husband and I will be traveling with our 2 college age daughters, so we want to stay as active and busy as we can during our trip. I will check the website of the seaplanes directly. Thanks again everyone and if anyone has any additional input as to what island to stay on or splitting time between 2 islands please share.

Consider that with only 7 days, you will be using one day to pack/travel/unpack if splitting time between islands.

My wife and I two-island St. Thomas and St. John with friends and family:
-Saturday arrive STT, get rental car, check-in Charlotte Amlie, happy hour at the Green House, watch the harbor at night.
-Sunday groceries in the room, off to Magen's bay for leisure day getting snorkel gear right and enjoying the beach--adult milk shakes at Utter Delight Creamery about a mile from Magen's on the left.
-Monday drive to Red Hook to catch car ferry to St. John, drive to one of the perfect beaches on the north shore, maybe catamaran at Cinnamon Bay, definitely snorkel that or another beach, quick stop in Mongoose Junction for coffee then to the ferry. Maybe a quick drink in Redhook then to bed.
-Tuesday shopping day Charlotte AmIlie, try pâté from a small vendor with a coke for walking around or lunch literally anywhere, as friends wear out I drive them back up the room to enjoy the pool.
-Wednesday is open, friend's choice, maybe touristy things like Mountain Top for best views and scary ride, snorkel Secret Harbor, lunch somewhere quirky like Latitude 18 across near Redhook...whatever they want.
-Thursday back to the ferry and St. John...could take the car or not...I do. Shops along the ferry docks and Mongoose Junction, If you're lucky Sheila's Kitchen is open...you'll eat what she has but it will be great. If anyone's up to it, Reef Bay trail or another snorkel beach then catch the ferry back. Perhaps slot machines at Redhook and dancing at Duffy's Loveshack.
-Friday I take requests, maybe a resort day just taking everything in, some people pack (I never pack the day before). I usually spend the day taking short trips and slip in another dip in the ocean.
-Saturday we get all friends and family to the airport, not us though...we spend another week!

Whoops, start at STT, not STX.