690+ US Flights Cancelled Now — Minneapolis, Chicago, Atlanta Hit Hardest

Quick Summary

693 flights cancelled and 4,247 delayed across the United States on March 15, 2026

Minneapolis/St. Paul International leads with 110 cancellations — the highest of any single US airport today

Southwest Airlines and American Airlines are the most disrupted carriers, with combined delays exceeding 1,200 flights

Severe winter weather, cold fronts, and thunderstorms are driving the disruptions, with conditions expected to persist

Thousands of U.S. travelers are stranded across the country on March 15, 2026, as a powerful combination of winter storms, cold fronts, and severe thunderstorms has forced major airlines to cancel 693 flights and delay more than 4,247 nationwide. Delta, Southwest, American Airlines, and United are among the hardest-hit carriers, with disruptions cascading across major hubs in Minneapolis, New York, Chicago, Atlanta, Seattle, and Los Angeles. Data sourced from FlightAware shows the aviation network is under significant strain — and conditions are not expected to improve quickly.

By the Numbers: The Full Scale of Today's US Disruption

The raw figures confirm this is a major nationwide event:

Total cancellations: 693 flights
Total delays: 4,247 flights
Worst airport for cancellations: Minneapolis/St. Paul International (MSP) — 110 cancellations, 118 delays
Worst airport for delays: Chicago O'Hare International (ORD) — 369 delays, 51 cancellations
Most-delayed airline: Southwest Airlines — 687 delays, 35 cancellations
Primary causes: Winter storms, cold fronts, thunderstorms, ground deicing, and high airport volume

What's Causing the Chaos

Today's disruptions trace back to a broad, multi-system weather event sweeping across the United States. Severe winter conditions — including strong winds, thunderstorms, and advancing cold fronts — have triggered ground stops, mandatory deicing procedures, and departure holds at airports from Minneapolis to Orlando.

High travel demand is compounding the operational strain. When multiple major hub airports experience weather-driven slowdowns simultaneously, the ripple effect across the national network is immediate and wide-reaching. A cancelled departure in Minneapolis doesn't just affect passengers there — it displaces aircraft, crew, and gate resources across the entire carrier's schedule.

Airport-by-Airport Breakdown

Minneapolis/St. Paul International (MSP) — 110 Cancellations, 118 Delays

MSP is today's worst-hit airport by cancellation volume. Winter weather conditions in Minnesota are directly grounding flights and triggering extensive deicing operations, pushing both cancellations and departure delays to their highest national levels.

Reagan National Airport (DCA) — 88 Cancellations, 114 Delays

Washington D.C.'s Reagan National is the second most cancelled airport today, with 88 flights grounded and 114 delayed — a significant disruption for the East Coast's political and business travel corridor.

Chicago O'Hare International (ORD) — 51 Cancellations, 369 Delays

O'Hare is the delay capital of today's disruptions. With 369 flights delayed, Chicago is bearing the heaviest burden of any airport for schedule slippage, reflecting its role as a critical hub for both United and American Airlines operations.

Hartsfield-Jackson Atlanta International (ATL) — 57 Cancellations, 246 Delays

Atlanta, the world's busiest airport by passenger volume, has recorded 57 cancellations and 246 delays — a familiar pressure point whenever storm systems track through the southeastern United States.

Seattle-Tacoma International (SEA) — 69 Cancellations, 140 Delays

Seattle is experiencing 69 cancellations and 140 delays, driven by weather systems affecting the Pacific Northwest and cascading network effects from disrupted hubs across the country.

Los Angeles International (LAX) — 41 Cancellations, 148 Delays

LAX adds 41 cancellations and 148 delays to the national total, primarily through network ripple effects and high inbound flight volume from disrupted eastern hubs.

Orlando International (MCO) — 26 Cancellations, 348 Delays

Despite its sunnier climate, Orlando is registering 348 delays today — the third-highest delay count nationally — as aircraft and crew originating from storm-hit northern hubs arrive late or not at all.

John F. Kennedy International (JFK) — 24 Cancellations, 192 Delays

New York's JFK adds 192 delays and 24 cancellations, with additional disruptions at nearby airports also affecting the metro area's air traffic picture. San Francisco International (SFO) and Dallas-Fort Worth (DFW) are also reporting delays, further stretching the national network.

Airline-by-Airline Disruption Data

Airline	Cancellations	Delays
Southwest Airlines	35	687
American Airlines	20	513
Delta Air Lines	—	—
United Airlines	—	—

Southwest Airlines is today's most delay-impacted carrier with 687 delays — a figure reflecting its point-to-point network model, where disruptions at one city rapidly ripple across its entire schedule. American Airlines follows with 513 delays and 20 cancellations, with the bulk of disruption concentrated at its Chicago O'Hare and Dallas-Fort Worth hubs. Delta, United, and regional carriers are also contending with operational challenges across their affected hub airports.

What This Means for Travelers

If you have a flight today or in the next 24–48 hours through any of the affected airports, here is what to do immediately:

Check your flight status now via your airline's app or website before heading to the airport — terminals at MSP, ORD, ATL, and DCA are severely congested
Look for your airline's weather waiver — Southwest, American, and Delta typically activate fee-free rebooking policies during widespread weather events; log in and check your booking
Rebook via the app, not the phone — hold times during mass disruptions run into hours; self-service rebooking is faster for standard weather scenarios
Know your rights: Airlines must offer a full refund if your flight is cancelled and you choose not to travel; weather waivers allow date changes without fees
Pack for a delay: Carry medication for 48 hours beyond your planned return, a portable charger, and snacks — airport food queues stretch significantly during mass disruptions
Save all receipts for hotels, meals, and transport — travel insurance policies frequently cover expenses incurred due to extended weather delays

How Long Will This Last?

With the weather system spanning multiple regions simultaneously, aviation experts expect disruptions to continue through the weekend. Even after the worst storm activity passes, airlines typically need 24–48 hours to reposition displaced aircraft and crew before schedules normalize.

Travelers with bookings through Minneapolis, Chicago, Washington D.C., and Atlanta in the next 48 hours should actively monitor forecasts and airline communications before departing for their airports.

Frequently Asked Questions

How many US flights are cancelled today, March 15, 2026? FlightAware data shows 693 cancellations and 4,247 delays on flights within, into, or out of the United States. Minneapolis/St. Paul International has the most cancellations at 110, while Chicago O'Hare leads for delays at 369.

Which airline has the most delays in the US right now? Southwest Airlines leads with 687 delays, followed by American Airlines with 513 delays. Southwest's point-to-point route structure means disruptions at any single airport quickly cascade across its full schedule.

What should I do if my flight is cancelled at Minneapolis or Chicago today? Open your airline's mobile app immediately and look for a weather waiver rebooking option. If your flight is cancelled and you choose not to travel, you are entitled to a full refund under US DOT rules. Avoid calling customer service if possible — app rebooking is significantly faster during mass disruptions.

Are other US airports also affected beyond those listed? Yes. San Francisco International (SFO) and Dallas-Fort Worth (DFW) are also reporting delays. Ground delay programs, which impose average departure holds of 15–30 minutes, are active at several additional airports due to volume and weather-driven congestion.

Today's US aviation disruption is a textbook example of how a multi-region winter weather system can overwhelm even the world's busiest flight network. If you are flying this weekend, check your status now — every hour of early action makes a meaningful difference when rebooking options are filling fast.

Stay informed, move quickly, and don't leave for the airport without confirming your flight is actually operating.

Related Travel Guides

600+ US Flight Cancellations: Delta, American & United Ground Thousands During March Storm

US Flight Cancellations and Delays — March 7, 2026: Chicago, Southwest and SkyWest

Asia Hit by 568 Cancellations and 2,075 Delays — Bangkok, Delhi, Tokyo and Doha Worst Affected

Disclaimer: Flight disruption data sourced from FlightAware and airport reports as of March 15, 2026. Figures are subject to change as conditions evolve. Always verify your flight status directly with your airline before traveling.