If you hold tickets to fly on Delta airlines out of Seattle and wonder about your flight in the wake of Delta’s global systems outage, and you can’t get through to the airline by phone, your best strategy is to check for delays or cancellations at this page on the Port of Seattle website.

After many delays and some cancellations out of Seattle Monday, the airline continues Tuesday to experience numerous hours-long delays, plus cancellations to destinations including Los Angeles, Las Vegas and Portland, among scores of Delta flights scheduled to depart Seattle-Tacoma International Airport. (Some of those listed flights may be code-share flights in which Delta tickets passengers to fly on other airlines).

The website incorporates information from the airline-tracking website FlightView as well as information provided by airlines to the Port of Seattle. You may also check the Delta Air Lines website for updates.

The company says travelers are entitled to a refund if their flight is canceled or significantly delayed. Delta has now extended free reticketing to include its Tuesday ticketholders. So even if your flight is not canceled or delayed and you were booked for travel on Delta Monday, Aug. 8, or Tuesday, Aug. 9, you may make a one-time change to your ticket without a fee if reticketing and travel is accomplished by Friday, Aug. 12, according to the Delta website.

Meanwhile, the travel-insurance comparison site Squaremouth warned that Delta passengers who have travel insurance may have some options, but in many cases coverage is not as extensive as some might hope.

Travelers who no longer want to continue with their trip because their flight has been delayed or canceled due to the airline’s computer outage may not be covered for their lost trip expenses, according to Squaremouth. While many policies cover trip cancellation if a flight is delayed for an extended period of time due to the mechanical breakdown of the aircraft, this coverage may not extend to the failure of the airline’s computer systems.

“In many cases, travel insurance won’t cover cancellation due to an airline’s computer glitch, though more limited coverage may be available for extra expenses, like hotels or meals, due to the delay,” Squaremouth spokesperson Rachael Taft said in an email. “Affected travelers who have questions about their coverage should call their travel insurance provider’s emergency assistance number.”

Many policies provide travel-delay and missed-connection coverage for any airline delay, including those caused by a computer glitch. Typically, the flight must be delayed at least 3-12 hours. Once this time limit is met, these benefits can cover a range of expenses. However, both benefits have a daily limit, which can be anywhere from $150-$1,000 per person.

These benefits typically cover meals and accommodations during the delay. They may also cover additional expenses to catch up to your trip or to return home. On some policies, these policies may reimburse unused, prepaid expenses that were missed due to the delay.

Travelers who intend to file a claim due to the Delta delays must have had a policy in place before the outage occurred to be eligible for coverage.

Charles Leocha, chairman of the consumer alliance Travelers United, said in an email that Delta travelers’ options include a full refund if flights are canceled, however passengers in the middle of a trip are at the mercy of the airline and its ability to move them to other airlines and its capacity to handle passengers on future flights. He noted that if Delta flights from the European Union to the U.S. are delayed for more than three hours, passengers are eligible for 600 euros (about $660 U.S.) in compensation.

Read more: Delta cancels more flights in wake of computer-system outage