Several airlines have expanded the travel waivers being offered ahead of Hurricane Dorian to include Florida, Georgia, North Carolina and South Carolina. 

The powerful storm slowed to a crawl over the Bahamas and is expected to come "dangerously close" to parts of the East Coast. 

The National Hurricane Center on Monday evening extended watches and warnings across the Florida and Georgia coasts. Forecasters expected Dorian to stay off shore, but forecasters warn that only a small deviation could draw the storm's dangerous core toward land. 

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American

American Airlines says change fees may be waived for passengers currently scheduled to travel to, from or through about a dozen Florida cities between Aug. 29 and Sept. 6. 

Additionally, a handful of cities across South Carolina and North Carolina were added as well. 

Passengers cannot change their origin or destination city and must rebook in the same cabin or pay the difference. A full list of restrictions and eligible airports can be found on American's website

The airline has also capped fares for one-way non-stop flights from certain airports. Flights are capped at $499 each way for Main Cabin, and $699 for premium cabins.

Delta Air Lines

For Delta passengers scheduled to travel to and from about a dozen destinations in Florida from Aug. 30- Sept. 6, they can rebook with a waived change fee and fly no later than Sept. 10. The same goes for those traveling in Georgia to Brunswick and Valdosta. A full list of cities is available on Delta's website. 

The airline also says passengers can cancel their trip and use the value toward a future flight. 

All baggage and pet in cabin fees have been waived for passengers travelling to or from affected cities through Sept. 4. 

Frontier

Frontier is allowing customers planning to fly to certain Florida cities between Sept. 1 and Sept. 4, and who booked those flights before Aug. 28, to make one free itinerary change with a fee waiver. Travel must happen no later than Sept. 27. See the full list of cities here.

Frontier is also letting customers scheduled to travel to parts of Georgia and South Carolina between Sept. 3 and Sept. 5 to make one free itinerary change. 

JetBlue

JetBlue is offering to waive change fees, cancel fees and fare differences for customers scheduled to travel between Aug. 30 and Sept. 4 to and from several Florida destinations. The original flights must have been booked by Aug. 29 and the rescheduled flight must happen by Sept. 10.

Those booked to travel to or from Charleston, SC, and Savannah, GA, from Sept. 2 through Sept. 5 are also eligible for a fee waiver.

See the full list of cities here (you may need to scroll down the page).

Spirit

Spirit says passengers with travel booked that includes Fort Lauderdale, Jacksonville, Orlando and Tampa from Aug. 31 through Sept. 3 can rebook through Sept. 18 to have the change fee waived and with no fare difference. After that, the change fee will still be waived but passengers will have to pay the fare difference.

The airline also added Myrtle Beach, SC, for Sept. 2-6. 

Those scheduled to travel through Aug. 30 to Puerto Rico, Dominican Republic and Haiti can rebook through Sept. 5 to have the change fee waived and with no fare difference. After that, the change fee will still be waived but passengers will have to pay the fare difference.

Southwest

Southwest's travel advisory affects passengers in three areas:

  • Charleston, South Carolina -- Sept. 7 
  • The Bahamas -- scheduled to travel through Sept. 5
  • Fort Lauderdale, Fort Myers, Jacksonville, Orlando, Tampa and West Palm Beach -- scheduled to travel Aug. 31 through Sept. 5.

Passengers can rebook within 14 days of their original travel date without any additional charge. Customers with reservations for a canceled flight may request a refund for an unused ticket/travel itinerary.

The airline has also waived its $95 pet fare for passengers travelling with small vaccinated cats or dogs from to or from a few cities in Florida. The fee is waived for flights through Sept. 5. 

United

United says anyone scheduled to and from about 10 Florida destinations between Aug. 29 and Sept. 4 can reschedule through Sept. 11 with no fees as long as it's in the same cabin and the same cities as the original ticket.

The airline also added Charleston, Hilton Head Island, Myrtle Beach, Savannah and Wilmington, to its travel waiver list for Sept. 2 to 7. 

For those who want to fly after Sept. 11 or change their departure or destination city, the change fee will also be waived but passengers will need to pay any fare difference. Travel must happen within one year.

Find the list of cities here (you will need to scroll down the page to find the Hurricane Dorian section.

The Associated Press contributed to this report.