Alaska Airlines has canceled 40 flights in and out of Philadelphia, Baltimore, Washington, D.C., Raleigh-Durham and New York for Friday-Sunday, Jan. 22-24, in advance of Winter Storm Jonas.

The airline will be keeping a close eye on the conditions on the East Coast throughout the weekend, and will only operate flights when it is safe to do so.

Alaska has implemented a flexible travel policy waiving change/cancelation fees for customers who would like to change their plans to or from Baltimore, Boston, Newark, New York – JFK, Philadelphia, Washington-Dulles and Washington-Reagan this weekend. Learn more at alaskaair.com.

All customers are encouraged to check the status of their flights online at alaskaair.com or on Alaska’s mobile app before leaving for the airport.

List of affected flights:

Friday, Jan. 22:

• 2 Seattle – Washington, D.C.
• 3 Washington, D.C. (Reagan) – Seattle
• 4 Seattle – Washington, D.C. (Reagan)
• 6 Los Angeles – Washington, D.C. (Reagan)
• 14 Seattle – Newark
• 18 Seattle – New York (JFK)
• 728 Seattle – Washington, D.C. (Dulles)
• 729 Washington, D.C. (Dulles)
• 740 Los Angeles – Baltimore
• 753 Raleigh-Durham – Seattle
• 754 Seattle – Raleigh-Durham
• 764 Portland – Washington, D.C. (Reagan)
• 766 Seattle – Baltimore
• 767 Baltimore – Seattle
• 771 Washington, D.C. (Reagan) – Portland, Oregon

Saturday, Jan. 23

• 1 Washington, D.C. (Reagan) – Seattle
• 2 Seattle – Washington, D.C.
• 3 Washington, D.C. (Reagan) – Seattle
• 4 Seattle – Washington, D.C. (Reagan)
• 5 Washington, D.C. (Reagan) – Los Angeles
• 6 Los Angeles – Washington, D.C. (Reagan)
• 7 New York (JFK) – Seattle
• 8 Seattle – Newark
• 11 Newark – Seattle
• 14 Seattle – Newark
• 17 Newark – Seattle
• 18 Seattle – New York (JFK)
• 31 Philadelphia – Seattle
• 32 Seattle – Philadelphia
• 728 Seattle – Washington, D.C. (Dulles)
• 729 Washington, D.C. (Dulles)
• 764 Portland – Washington, D.C. (Reagan)
• 766 Seattle – Baltimore
• 767 Baltimore – Seattle
• 771 Washington, D.C. (Reagan) – Portland, Oregon

Sunday, Jan. 24

• 1 Washington, D.C. (Reagan) – Seattle
• 5 Washington, D.C. (Reagan) – Los Angeles
• 7 JFK – Seattle
• 17 Newark to Seattle
• 739 Baltimore – Los Angeles