Passengers travelling to and from Bristol Airport are facing delays of up to seven hours after its runway was closed on Friday evening.
The airport said flights had resumed at 8am on Saturday morning, but cautioned: "There's some disruption to flights today. Customers should contact their airline with flight queries."
"We're very sorry for any inconvenience caused while essential runway repairs were carried out," it added.
The majority of flights have been severely delayed, with a handful cancelled.
One of the first scheduled departures of the day from Bristol, a Jet2 flight to Faro, Portugal, was delayed from 5.55am to 11.29am, according to the airport's website. Another of the airline's flights, to Verona, Italy, is now due to take off at 8pm instead of 1pm.
Cancelled flights include domestic EasyJet services heading for Newcastle and Edinburgh, and another going to Pula, Croatia.
Read more: Your rights when a flight is delayed or cancelled
Replying to customers on social media, Jet2 has said travellers should still arrive at the airport for their original departure time.
EasyJet has issued the same advice, and is also urging customers to use the flight tracker feature in its app to receive real-time updates.
Arrivals have also been impacted, with no aircraft able to land before 8am.
The airport had been forced to close at around 6pm on Friday.
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