National Airspace System Status
21 comments
·April 24, 2025er0k
dylan604
Okay that's neat. It was interesting watching how the misery changes as the storms roll through watching something like DAL which is easy to see the effects. The cascade effect on cities without storms reminds me of how auto traffic slow downs from an accident continue to linger even though the blockage has cleared.
brianpan
The UX is giving me misery.
Most of the time the red fills in counter-clockwise. Until it is over 50%, then the red fills in clockwise.
Lots of the map circles actually represent MULTIPLE airports. But they still "represent" them with a three letter code. Sometimes by the largest airport (ORD, SFO), sometimes by a non-airport code (NYC), and sometimes by the second largest (DFW is larger that DAL).
Someone's pet project needs some more love.
EDIT: This version looks less like a pet project: https://www.flightaware.com/live/airport/delays
jjmarr
Just as a fun fact, there are IATA airport codes that designate cities instead of airport for purposes like this. NYC is one of them. So is YTO (Toronto) or CHI (Chicago, which should probably replace ORD).
nunez
Didnt expect this to trend on HN. I used to travel every week for work and learned to used this and fly.faa.gov/ois to find out how long ground stops will be during delays for years.
While I'm on this soapbox: ExpertFlyer. If you travel once per month or more, it is ABSOLUTELY worth the $10/mo. They provide a lot of info straight from GDSes, somehow. Invaluable for rebooking and seat changes.
TheTaytay
I’ve been using Flighty for this. This sort of tool is life changing. Today in DFW, it told me about my plane’s delay at least 15 to 20 minutes before the gate agent knew!
pogue
That faa.gov url won't open. Can you share the correct link?
sklargh
If you are delayed, get this tool up. It is a huge informational advantage over the data the airline will give you and provides excellent help making a decision on seeking a different mode of transportation, giving up and going home, taking an inferior seat on a different airline etc...
ZeWaka
Use this all the time for flying, it's fantastic. Great to know you'll be delayed before they even make the decision.
Highly recommend the 'Map View' tab and the 'Weather' tab (especially with Cities + Fronts enabled).
pavelstoev
YYC airport code is for Calgary, Canada. Why is on the US .gov site is there something I missed
khuey
Canadian advisories (presumably from NAV CANADA) are fed into the ATCSCC system. You can see that more explicitly on the less slick version at https://www.fly.faa.gov/adv/advAdvisoryForm.jsp
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bdangubic
[flagged]
robertclaus
When I looked SFO, DEN, LAS, and EWR were all delayed due to weather. Do busier airports end up on this list more for some reason, or is it just really bad luck today?
joezydeco
It's a day off for ORD, DFW, ATL, and MIA.
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VectorLock
Is something going on? Why is BOS closed?
rogerrogerr
This is the note:
> Closed TO NON SKED TRANSIENT GA ACFT EXC PPR 617-561-2500
Which translates to “closed to non-scheduled transient general aviation aircraft, except those with prior permission from calling 617-561-2500”
They just don’t want me flying my Skyhawk in there at 90kts on final, at least without calling them first so they can get some cathartic tongue lashing in before giving me permission.
happyopossum
It’s closed to unscheduled transient flights, which is normal when an airport gets busy/backed up.
FlightAware's MiseryMap is pretty cool too https://www.flightaware.com/miserymap/