Jul 25, 2025

Calgary (YYC) Flight Delays and Operational Impact

Suncor flights to and from Calgary are expected to experience significant operational impacts due to major runway and taxiway rehabilitation at Calgary International Airport (YYC). This construction will continue until December 1, 2025. Please review the following important information to help you plan your travel and to understand the potential for departure delays from Firebag.

 What’s Happening?

• YYC’s main West Runway (17R/35L) is closed 24/7 until December 1, 2025.
• Major taxiways and aprons are also closed or restricted, especially during peak maintenance hours (0700–1900).
• All flights are funneled to a single runway, increasing congestion and the risk of delays.
• Construction is also impacting air traffic flow control into YYC, which may result in additional delays for flights departing Calgary and arriving from Firebag.
• The project is being completed in nine phases, we are currently in Phase 6.

Construction Phase Schedule

• Phase 6: July 14 – August 10, 2025 (Current Phase)
• Phase 7: August 11 – September 28, 2025
• Phase 8: September 29 – November 2, 2025
• Phase 9: November 3 – December 1, 2025

Earlier phases ran from April 2024 through July 13, 2025.

How Will This Affect My Flight?

• Delays:
  Expect longer wait times for departures and arrivals, especially for flights scheduled between 7:00 AM and 7:00 PM.
• Flow Control Delays:
  Due to construction, air traffic flow into YYC is further restricted, which may cause flights to be delayed from Firebag or even before landing.
• Longer Taxi Times:
  Aircraft may need to taxi longer distances due to closed taxiways, which can add to overall travel time.
• Gate and Apron Changes:
  Some flights may be assigned different gates or parking areas, and boarding/deplaning procedures may be adjusted.
• Possible Diversions:
  Flights may be held on the ground or diverted to another airport if congestion is severe.

What Should I Do?

• Arrive Early:
  Please arrive at the Calgary airport well in advance of your scheduled departure time to allow for possible delays at check-in and security.
• Be Prepared for Changes:
  Gate assignments and boarding times may change on short notice.
• Plan for Delays:
  If you have connecting flights, allow extra time in your travel plans.

Suncor Flight Schedule Highlights (YYC Departures/Arrivals):

• Most affected flights:
  Departing or arriving between 7:00 AM and 7:00 PM, including but not limited to flights 4020, 4032, 4038, 4036, 4074, 4076, 4030, 4034, 4040, 4021, 4073, 4077, 4031.
• Flights outside this window may still experience moderate delays due to congestion and flow control.

We appreciate your patience and understanding as we work with WestJet and airport authorities to minimize disruptions.

Thank you for your cooperation.