The 10 Most Delayed US Airports in 2026

If you fly through certain US airports regularly, delays aren't a surprise — they're a scheduling feature. Some airports have on-time arrival rates below 70%, meaning nearly a third of flights land late. Here's who's worst, why, and what you can do with that information.

The Rankings

1. EWR — Newark Liberty International

Newark tops the list almost every year. The problem is simple: three airports (EWR, JFK, LGA) share the same congested airspace over the New York metro area. Newark has two crossing runways that can't operate independently in bad weather, which means capacity drops by 40% when it rains. Afternoon and evening flights out of Newark are delayed at rates approaching 40%. If you have a choice between EWR and JFK, neither is great, but Newark is measurably worse.

**Best time to fly:** Before 10 AM. Early morning flights usually depart before the delays start stacking.

2. SFO — San Francisco International

San Francisco's problem is fog. The marine layer rolls in during summer and fall, forcing SFO to use a single-runway configuration instead of two parallel runways. That cuts landing capacity roughly in half. SFO is one of the only major airports where summer is worse than winter for delays.

**Best time to fly:** Midday in winter. Mornings are fog-prone year-round, and summer afternoons are the worst.

3. JFK — John F. Kennedy International

JFK shares the New York airspace problem with Newark. Four runways help, but ground traffic between terminals is slow, taxi times are long, and international traffic creates complex sequencing. Late afternoon arrivals — when the European flights land in waves — are the peak delay window.

**Best time to fly:** Early morning domestic flights. Avoid 3-7 PM when transatlantic arrivals stack up.

4. ORD — Chicago O'Hare

O'Hare handles massive volume as a connecting hub for both United and American. That alone creates delays. Add midwestern weather — thunderstorms in summer, ice and snow in winter — and you get an airport that's fighting conditions for eight months of the year. O'Hare's runway modernization has helped, but it's still one of the most delay-prone airports in the country.

**Best time to fly:** Early morning, any season. O'Hare's convective weather delays usually start mid-afternoon in summer.

5. LGA — LaGuardia

LaGuardia is small, old, and hemmed in by water. Two runways, heavy demand, and the same New York airspace congestion as JFK and EWR. The new terminal is nicer inside, but it didn't add runway capacity. Delays are baked into the schedule — airlines actually pad LaGuardia flight times by 15-20 minutes to make their on-time numbers look better.

**Best time to fly:** First flight of the day. LGA gets progressively worse as the day goes on.

6. BOS — Boston Logan

Boston's weather is the culprit. Nor'easters in winter, fog in spring, and runway configurations that change based on wind direction all contribute. Logan has five runways, but some can't be used simultaneously due to noise restrictions. When winds shift, the whole operation reshuffles.

**Best time to fly:** Mid-morning on clear days. Winter evenings are the worst.

7. DCA — Reagan National

Reagan is a short-runway airport handling full-size jets in tight airspace right next to restricted zones around Washington. The Potomac River approach limits options, and security restrictions add complexity. Afternoon thunderstorms in summer create ground stops that ripple through the evening schedule.

**Best time to fly:** Before 9 AM. Summer afternoon thunderstorms make 3-8 PM unreliable.

8. LAX — Los Angeles International

LAX doesn't have the weather problems of East Coast airports, but it has volume problems. Four runways handle over 2,000 flights per day. The terminals were designed decades ago for far less traffic. Taxi times from the runway to remote gates can hit 15 minutes. Delays at LAX tend to be moderate but consistent — you're rarely 3 hours late, but you're frequently 20-40 minutes late.

**Best time to fly:** Early morning or late evening. Mid-afternoon is peak congestion.

9. DFW — Dallas/Fort Worth

DFW is one of the best-designed airports in the US, and its delay rates reflect that — it's the least bad on this list. But Texas weather is unpredictable. Severe thunderstorm cells move through the DFW area frequently in spring and summer, and when they do, the airport can go from normal to ground-stopped in 30 minutes.

**Best time to fly:** Morning flights year-round. Thunderstorm risk peaks in late afternoon from April through September.

10. ATL — Hartsfield-Jackson Atlanta

Atlanta is the world's busiest airport by passenger volume, and it handles the traffic better than most. Five runways in a parallel configuration keep things moving. But when weather hits — particularly summer thunderstorms — the volume means there's no slack in the system. A 30-minute ground stop at ATL cascades delays to dozens of connecting flights across the country.

**Best time to fly:** Early morning. Summer afternoon storms are the primary delay driver.

How Delays Cascade

Airport delays don't stay local. When Newark gets backed up, the planes that were supposed to fly to Chicago, Dallas, and Atlanta are late departing. Now those airports have late-arriving aircraft that were scheduled to turn around and fly somewhere else. One thunderstorm over New Jersey at 2 PM can delay flights in Phoenix at 9 PM.

The FAA manages this through Ground Delay Programs (GDPs) and Ground Stops. A GDP slows the flow of incoming flights by assigning departure delays at the origin. A Ground Stop is more severe — no flights depart for that airport until it's lifted. You can check the current status at fly.faa.gov.

What This Means for You

If you're booking flights, the data says: fly early in the day and expect delays when routing through the airports above. If you're picking someone up, delays at these airports aren't unusual — they're the baseline.

This is exactly why tracking matters more at delay-prone airports. If a flight into Newark or SFO is showing on-time at departure, it might not be on-time at arrival. Weather changes, ATC changes, and ground congestion can add 20-60 minutes that weren't in the forecast when the flight took off.

SkyText landing alerts work well here because they trigger on actual touchdown, not the scheduled time. You're not guessing whether the delay is still 20 minutes or has grown to an hour — you just get the text when the plane is on the ground.

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