Update: Some offers mentioned below are no longer available. View the current offers here.Blizzard warnings currently stretch across six Midwest and Upper Plains states as a powerful winter storm – dubbed “Wesley” by The Weather Channel – sweeps across the country. The storm has strengthened so quickly that it’s reached the point to be classified as a “bomb cyclone” – an exceptionally rare weather event.Here’s what a “Bomb Cyclone” Actually MeansAccording to the FlightAware flight cancellation tracker, airlines have cancelled 971 flights in/out/through the US for Wednesday in addition to 224 cancellations so far on Thursday.To help travelers affected by the storm, airlines have issued weather waivers. Travelers with plans to fly during the storm may be able to change their flights to an earlier/later date or route through another airport that isn’t expected to be affected by the storm.Here’s what’s been issued so far:Sign up for our daily newsletterEmail addressSign upI would like to subscribe to The Points Guy newsletters and special email promotions. The Points Guy will not share or sell your email. See privacy policy.American AirlinesTravel date: April 10-11Airports covered: Appleton, Wisconsin (ATW); Cheyenne, Wyoming (CYS); Green Bay, Wisconsin (GRB); Jackson Hole, West Virginia (JAC); La Crosse, Wisconsin (LSE); Marquette, Michigan (MQT); Minneapolis / St. Paul, Minnesota (MSP); Rapid City, South Dakota (RAP); Rochester, Minnesota (RST); Sioux Falls, South Dakota (FSD); Wausau, Wisconsin (CWA)Must have purchased your ticket by April 9Rebook travel anytime between April 9-14You can’t change your origin or destination city. Must rebook in same cabin or pay the difference.Avoid the phone queue. Changes available on both AA’s website and in the AA app.DeltaColorado Winter WeatherTravel dates: April 10-11Airports covered: Aspen, CO (ASE); Colorado Springs, CO (COS); Denver, CO (DEN); Grand Junction (GJT)Tickets must be reissued on or before: April 14Rebooked travel must begin no later than: April 14Must have purchased your ticket by April 9Changes to origins and destinations may result in an increase in fare. Any difference in fare between your original ticket and the new ticket will be collected at the time of booking.Upper Midwest Winter WeatherTravel dates: April 10-11Airports covered: Aberdeen, SD (ABR); Appleton, WI (ATW); Brainerd, MN (BRD); Duluth, MN (DLH); Escanaba, MI (ESC); Green Bay, WI (GRB); Hibbing, MN (HIB); Iron Mountain, WI (IMT); Marquette, MI (MQT); Minneapolis, MN (MSP); Rapid City, SD (RAP); Rhinelander, WI (RHI); Sioux Falls, SD (FSD); Wausau, WI (CWA)Tickets must be reissued on or before: April 14Rebooked travel must begin no later than: April 14Must have purchased your ticket by April 9Changes to origins and destinations may result in an increase in fare. Any difference in fare between your original ticket and the new ticket will be collected at the time of booking.FrontierTravel dates: April 10-11Airports covered: Bismarck, ND (BIS); Colorado Springs, CO (COS); Denver, CO (DEN); Fargo, ND (FAR); Madison, WI (MSN); Milwaukee, WI (MKE); Minneapolis, MN (MSP); Omaha, NE (OMA); Sioux Falls, SD (FSD)Must have purchased ticket by April 9Rebooked travel must be completed no later than: April 26Customers may make one itinerary change – rules/restrictions regarding standard change fees, advance purchase, day or time applications, blackouts, and minimum or maximum stay requirements will be waived.JetBlueTravel dates: April 10-11Airports covered: Denver, CO (DEN)Customers may rebook their flights for travel through April 14Original travel must have been booked on or before April 10SpiritTravel dates: April 10-11Airports covered: Denver, CO (DEN) and Minneapolis, MN (MSP)Modification Charge/Fare Difference waived through: April 14After this date, the modification charge is waived, but a fare difference may apply.Guests can make changes to their reservations affected by this event by going to our Manage Travel page, or by calling the Spirit Reservations Center at 801-401-2222 to make their flight changes. To make changes to Spirit Vacation packages contact Spirit Vacations at 954-379-8866.SouthwestAirport covered (April 10): Milwaukee, WI (MKE)Airport covered (April 10-11): Denver (DEN)Airport covered (April 10-12): Minneapolis/St. Paul, MN (MSP)Customers who are holding reservations to/from/through the cities above on the corresponding dates may rebook in the original class of service or travel standby (within 14 days of their original date of travel between the original city-pairs and in accordance with [Southwest’s] accommodation procedures) without paying any additional charge.UnitedGreat Plains Winter WeatherTravel dates: April 10-11Airports covered: Duluth, MN (DLH); Fargo, ND (FAR); Gillette, WY (GCC); Minneapolis/St. Paul, MN (MSP); Rapid City, SD (RAP); Sioux Falls, SD (FSD)The change fee and any difference in fare will be waived for new United flights departing on or before April 14, as long as travel is rescheduled in the originally ticketed cabin (any fare class) and between the same cities as originally ticketed.Colorado Winter WeatherTravel dates: April 10-11Airports covered: Aspen, CO (ASE); Colorado Springs, CO (COS); Denver, CO (DEN); Grand Junction, CO (GJT); Gunnison, CO (GUC); Hayden, CO (HDN); Montrose/Telluride, CO (MTJ); Vail/Eagle, CO (EGE)The change fee and any difference in fare will be waived for new United flights departing on or before April 14, as long as travel is rescheduled in the originally ticketed cabin (any fare class) and between the same cities as originally ticketed.No waivers (yet) from: Alaska, AllegiantProtect Your TravelsThis winter storm is another reminder to book flights with a card that offers solid trip delay and cancellation insurance. Cards with solid trip protection include the Chase Sapphire Reserve and the Chase Sapphire Preferred Card.