TAP Air PortugalTP80% on time
Flights TP243 varies We Th Fr Sa Su
live
Direct flights from Lisbon (LIS) to Chicago (ORD): 5 nonstop departures observed each week across 1 airline. 80% of the last 5 operated flights arrived within 15 minutes of schedule. The median arrival is 9 minutes late. No cancellations were recorded across the 5 tracked flights. The nonstop covers 6,435 km, an estimated 8 hours 45 minutes in the air. Measured by Pro Flight Search from live flight boards at Lisbon and Chicago. Updated 11 September 2026 at 05:54 UTC.
LIS
Lisbon
busy · +18
ORD
Chicago
smooth · +0
6,435 km · ~8h 45m est.
Runs reliable · 1 airline · 5x weekly · nonstop
80% on time
of the last 5 operated LIS → ORD flights arrived within 15 minutes
Median arrival delay is +9 min. 0 of 5 tracked legs cancelled in the sample. Will a delayed flight be cancelled? →
Median arrival+9 minacross the last 5 operated legs
Flight time~8h 45mestimated from route distance
Weekly departures5x1 direct airline on the leg
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 boardsWeather lens
Current conditions put the pressure at ORD: 43% odds of a 15+ minute delay and around +13 min expected when it bites, measured from this route's own weather-matched delay history. See live delays → · Weather risk by airport →
next sweep in 120s
How the Lisbon to Chicago route actually runs
Pro Flight Search records official board updates for nonstop LIS to ORD flights through the day: 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.
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 — Lisbon (LIS) to Chicago (ORD) route reliability, measured from operated flights on official airport boards.
Canonical URL
How we measure this →
https://proflightsearch.com/search-flights/LIS-ORD
LIS to ORD questions
Is LIS–ORD running on time right now?
Smooth skies ahead. The departure side at LIS is the weaker end, route health score 88/100. The airports section above carries the live status and delay window at both ends.
How long is the flight from LIS to ORD?
Great-circle distance is 6,435 km. With typical jet cruise speed plus taxi, climb and descent, expect roughly 484–582 min gate-to-gate on this route.
How often does LIS–ORD fly?
TAP Air Portugal runs the route with about 5 flights a week (sun, wed, thu, fri, 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 LIS and arrival-side delay at ORD, 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.
.