Well, Spirit Airlines can get you to the Bahamas ultra cheaply because they operate a hub in Fort Lauderdale (FLL) Florida. JetBlue are their competitor. Below I'm comparing route maps of both carriers.
From Florida it's only about an hour to the Bahamas. My wife and I live on Eleuthera island in the center of the Bahamas. We always enjoy the spectacular views of the shallow sea on the flight from Florida to Eleuthera.
Over 50% of Spirit's flights go to Caribbean islands, the Bahamas and Latin America. Spirit Air's low-cost competitor is JetBlue Airways. JetBlue's home airport is JFK, New York. Below I show you...
... the route maps of both airlines from the US to the Bahamas. That will allow you to choose your best and cheapest route.
And with the KAYAK search tool (shown below) you will find your best possible travel arrangement and hotel, even a rental car. Really, low-cost vacations start with cheap air tickets, a cheap flight to the Bahamas.
When visiting the Bahamas, you can either choose the large tourist destination -- Nassau the capital, or the more rustic but friendlier Out-Islands such as Abaco, Exuma, or Eleuthera. What would you like better? To get a feel for one of the fascinating Out-Islands of the Bahamas, click on the Eleuthera link just above.
For an updated and full version of Spirit's US route map, click on the image above.
Now compare Spirit's with JetBlue Airways' route map below.
Clicking on the map will bring up an enlarged and updated version. Once on the large map, click on the city dots to see all the outgoing routes.
Because Spirit has a hub in Ft. Lauderdale (FLL), their flights from many US destinations go to FLL first. Then on to Nassau (NAS)in the Bahamas.
If you travel to a Bahamian Out Islands from Nassau, I would recommend flying Southern Air or Bahamas Air. To fly to Eleuthera island we prefer small Southern Air, because it's more reliable than Bahamas Air and offers more flights to Eleuthera per day.
Sometimes you can get extremely low air fares from JetBlue on the routes below, but only from Boston, New York JFK, Orlando and Ft. Lauderdale.
Spirit Airlines on the other hand offers non-stop flights from the US to Nassau, but only from Ft. Lauderdale. The Sprit Air route map above shows it clearly.
Kayak has been called the Google of travel sites because it is so easy to use and it consistently returns the lowest fares. Kayak also redirects you to an airline's site, so you can book directly and collect mileage points. In short...
How to find accommodation and a rental car using Kayak?...
Spirit Airlines or JetBlue usually offer the cheapest air fares to the Bahamas. However...
... double-check other ultra low-cost flights, hotels or rental cars, by clicking on the Kayak travel search links above.