Does United give refunds for canceled flights?
Some United flights are eligible for refunds, while others offer only flight credits. But all fares, as long as they were booked at least a week before scheduled travel, can be canceled within 24 hours of booking for a full refund. Likewise, if a flight was significantly delayed or canceled by United due to weather, air traffic control or mechanical issues, you may be able to request a refund or travel credit via United’s refund form.
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https://cofradesdegranada.ideal.es/articles/does-united-give-refunds-for-canceled-flights
https://cofradesdegranada.ideal.es/articles/does-united-give-refunds-for-canceled-flights