WestJet AirlinesB次元官网网址� check-in services have been restored, after a temporary system outage caused flight delays and snarled travel across Canada Thursday morning.

WestJet spokeswoman Morgan Bell said travellers are still being encouraged to arrive early and check their flight status before heading to the airport. She said the airline is still experiencing issues with its self-serve baggage drop at Calgary, Ottawa, Saskatoon and Halifax airports.

System outages affected both WestJet Airlines and air traffic control agency NAV Canada on Thursday, with travellers on social media reporting long lines and confusion at airports.

Elle Dunlap from San Francisco, Calif. B次元官网网址� who was travelling with her husband and five-year-old son Thursday to Saskatoon, Sask. for her husbandB次元官网网址檚 brotherB次元官网网址檚 memorial service B次元官网网址� arrived at the San Francisco International Airport at 6 a.m. Thursday morning. Their flight, with a scheduled connection in Calgary, was supposed to depart at 8:30 a.m. but as of 9:15 a.m., the family was still waiting.

B次元官网网址淚 was anxious about this flight anyway because IB次元官网网址檝e heard about some of the troubles with domestic flights within Canada,B次元官网网址� Dunlap said in an interview, adding she first suspected there was a problem when the family was unable to check in online.

B次元官网网址淲e came to the airport super early, but there was just no communication (from WestJet). It was just B次元官网网址榯he systemB次元官网网址檚 not workingB次元官网网址� and we were just waiting in line with 100 other people for hours.B次元官网网址�

NAV Canada, the not-for-profit corporation responsible for air traffic control in Canadian airspace, said it was experiencing disruptions in western locations Thursday due to a service outage with its third-party telecommunications provider, Zayo.

Zayo spokesperson Karen Modlin said the outage amounted to a disruption of two key fiber lines managed by one of the companyB次元官网网址檚 underlying fiber providers in Canada and was caused by a train derailment Wednesday evening.

B次元官网网址淲e have rerouted a significant volume of traffic via other routes so that our customers can begin resuming normal operations,B次元官网网址� Modlin said, in an email to The Canadian Press.

B次元官网网址淲e regret the inconvenience this has caused for our customers and air passengers, and our top priority is the safety of everyone involved.B次元官网网址�

NAV Canada spokesman Brian Boudreau said air traffic control reduced the flow of departures and arrivals temporarily in some locations as a result.

He later added that services are B次元官网网址渞eturning to normal.B次元官网网址�

The outages Thursday are exacerbating what has already been a frustrating summer for Canadian air travellers.

Airlines and airports have been struggling to cope with a massive travel resurgence in the wake of the lifting of COVID-19 restrictions, and staffing issues at carriers and federal agencies have resulted in flight cancellations, baggage delays and endless queues.

B次元官网网址擜manda Stephenson, The Canadian Press