Here's what you need to know about changing or canceling your travel plans due to the coronavirus, as outbreaks spread to every continent except Antarctica

American Airlines similarly cancelled its flights to China as demand fell, tentatively planning to resume flying in late-April.

For passengers scheduled on flights that were still operating, or who were flying to certain other affected areas, the airline has issued a series of travel waivers.

Travelers to mainland China and Hong Kong can change their flights, postpone travel, or cancel their tickets without a change or cancellation fee.

Those traveling to Seoul, South Korea can change or delay their flights, but will still have to pay cancellations fees if they decide to call the trip off altogether. They can also change their origin or destination city to Tokyo.

Passengers can make a one-time change online as long as they aren't changing origin or destination city by visiting the "Find your trip" page and selecting "change trip" in the toolbar.

For any other changes, passengers should contact reservations at 800-433-7300 from the US, or at the relevant phone number listed on this page.

The full mainland China travel waiver applies for travel scheduled between January 24 and April 24, as long as tickets were bought by January 24. Trips must be rescheduled for travel by June 1, 2020 for the waiver to apply. The travel waiver applies for passengers scheduled to fly to, from, or through:

• Beijing, China (PEK or PKX)
• Shanghai, China (PVG)

The Hong Kong travel waiver applies for travel scheduled between January 28 and April 24. Trips must be rescheduled for travel by June 30, or cancelled before the originally scheduled date.

The Seoul Incheon, South Korea travel waiver applies for travel scheduled between February 24 and April 24. Trips must be rescheduled for travel by June 30.

Visit this page for full details on the travel waivers.

Although United has also cancelled its own flights to China and Hong Kong, it issued several travel waivers for passengers scheduled to travel to the region. It added a South Korea waiver this week.

The airline is allowing passengers to change or delay their flights without fees. Passengers scheduled to fly to China and Hong Kong can also choose to cancel their flights and receive a full refund.

The full China travel waiver applies for travel scheduled between January 24 and April 30. Trips must be rescheduled for travel by June 30, or cancelled before the original travel date, for the waiver to apply. The travel waiver applies for passengers scheduled to fly to, from, or through:

• Beijing, China (PEK)
• Chengdu, China (CTU)
• Shanghai, China (PVG)

Similar terms apply for flights to, from, or through Hong Kong, for travel scheduled between January 28 and April 30.

Passengers scheduled to fly to, from, or through Seoul Incheon, South Korea between February 24 and June 30 can change their flights without a fee for travel by June 30. Refunds are not available for Seoul travelers.

To change or cancel your flights, visit the "view your reservation" page and select "Change Flight." If you're eligible for a refund, you can request it at this page.

You can see the full travel waiver details here.