> ## Content Index > Fetch the complete content index at: https://www.thecontrail.org/llms.txt > Use this file to discover other available public pages before exploring further. # Fog Is Holding Up Flights at One of America's Busiest Airports - URL: https://www.thecontrail.org/denver-airport-delays-fog/ - Published: 2026-10-27T13:23:10.000Z - Updated: 2026-10-27T14:41:14.000Z - Description: Thick fog in Denver has planes circling for over an hour before they can land at one of the busiest airports in the country. Why it matters even if you're not flying to Denver, and what to do if you are. - Author: Zach Benitez - Tags: News, United, Southwest Thick fog is causing delays at Denver International Airport on Tuesday morning, with arriving planes held in the air for more than an hour before they can land. Denver is one of the four busiest airports in the US, handling more than 82 million passengers last year, so a slowdown there rarely stays in Denver. The fog rolled in overnight across Denver and the Colorado Front Range, and by early Tuesday visibility at the airport had dropped to about a quarter of a mile, with clouds sitting roughly 100 feet off the ground. To keep planes safely spaced in those conditions, air traffic control cut the number of flights that can land each hour, and as of mid-morning New York time, arriving flights were being held for 1 hour to 1 hour 15 minutes, with delays still growing. A dense fog advisory for the area runs until 9 a.m. local time, though fog doesn't always lift on schedule. Denver ยท Tuesday, Oct. 27 ### Fog Is Slowing Flights at Denver 1 hr+Holding time Arriving planes are being held in the air for over an hour before landing, and delays are still growing. Visibility About a quarter mile Fog advisory Until 9 a.m. local (11 a.m. ET) Could spread to United, Southwest and Frontier flights nationwide If you're flying today Check your flight in your airline's app and turn on alerts. Connecting through Denver? Look for automatic rebooking in the app first. Picking someone up? Track the actual landing time, not the scheduled one. Contrail --- ## Why It Matters Even If You're Not Flying to Denver Denver connects to more US cities nonstop than any other airport, and it's a major hub for United, Southwest and Frontier. That means a lot of the planes and crews stuck circling Denver this morning are scheduled to fly somewhere else next. When they arrive an hour late, the flight after that leaves late too, and the delays can ripple out to airports that have clear skies all day. If your flight today connects through Denver, or your plane is coming from there, it's worth keeping an eye on it even if the weather where you are is perfect. Like the [fog](https://www.thecontrail.org/amman-airport-fog-flights/) that slowed flights in Amman on Monday, this kind of delay usually clears up once the fog lifts, but the knock-on effects can last into the afternoon. ## Know Before You Fly Delays, closures and weather chaos, explained for normal travelers. Free in your inbox. Get Contrail Free Email sent! Check your inbox to complete your signup. No spam. Unsubscribe anytime. --- ## If You're Flying Today Check your flight status in your airline's app before you leave, and turn on notifications so you hear about changes right away. If you're connecting through Denver and your first flight is running late, your airline's app will often rebook you automatically onto a later connection, so look there before joining a line at the airport. If you're picking someone up, check their flight's actual landing time, not the scheduled one, and wait in the cellphone lot rather than circling.