Ethiopian AirlinesET
Flights ET3511 varies Sa
live
Direct flights from Chicago (ORD) to Zaragoza (ZAZ): 1 nonstop departure observed each week across 1 airline. The median arrival is 306 minutes late. No cancellations were recorded across the 1 tracked flight. The nonstop covers 6,854 km, an estimated 9 hours 17 minutes in the air. Measured by Pro Flight Search from live flight boards at Chicago and Zaragoza. Updated 17 August 2026 at 04:26 UTC.
ORD
Chicago
smooth · +0
ZAZ
Zaragoza
tracking
6,854 km · ~9h 17m est.
Running clean · 1 airline · 1x weekly · nonstop
100 / 100
route health from live ORD and ZAZ delay boards
Median arrival delay is +306 min. 0 of 1 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Search live fares for this route →Median arrival+306 minacross the last 1 operated legs
Flight time~9h 17mestimated from route distance
Weekly departures1x1 direct airline on the leg
Current nonstop fares
ORD → ZAZ · one way · economy · 1 adult
TodayChecking…Direct airline fares
TomorrowChecking…Direct airline fares
In one weekChecking…Direct airline fares
Who flies it
observed on the boards · 7 daysHistory
operated legs · board outcomesActual board outcomes rather than schedules, paired departure and arrival per flight and day.
Full board history, day by day →
Airports right now
live boardsnext sweep in 120s
How the Chicago to Zaragoza route actually runs
Pro Flight Search tracks every published board update for nonstop ORD to ZAZ flights: schedules, estimates, gate pushes and actual departures. The verdict above comes from operated flights, so it reflects what this route does rather than what the timetable promises. Fares link straight to the operating airline with no markups.
Planning around a delay? Live airport delays · Weather delay risk map · Will a delayed flight be cancelled? · Do planes make up time in the air? · How we measure
Cite this data
Journalists, bloggers, and researchers may cite this page with attribution and a link to Pro Flight Search.
Suggested citation
Pro Flight Search — Chicago (ORD) to Zaragoza (ZAZ) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/ORD-ZAZ
ORD to ZAZ questions
Is ORD–ZAZ running on time right now?
Smooth skies ahead. Both endpoints currently score the same, route health score 100/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from ORD to ZAZ?
Great-circle distance is 6,854 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 514–617 min gate-to-gate on this route.
How often does ORD–ZAZ fly?
Ethiopian Airlines runs the route with about 1 flight a week (sat). Since one carrier owns the route, a single disruption tends to ripple through the day.
What does the route health score measure?
A blend of departure-side delay at ORD and arrival-side delay at ZAZ, computed from rolling delay windows (refreshed every 40 minutes) with a daily-rollup fallback. Current MVFR, IFR, or LIFR endpoint weather caps the score when flight rules can limit throughput. Higher is healthier: 100 means operations are clean at both ends.
.