UA559 · UAL559

UAL559 over the last 30 days

As of 2026-10-27

UAL559 is operated by United Airlines on the route Chicago O'Hare International Airport (ORD/KORD) → San Diego International Airport (SAN/KSAN). It usually takes off around 19:04 UTC (14:04 local time, ORD). It usually lands around 22:58 UTC (15:58 local time, SAN). Most frequent aircraft type: BOEING 737-900 (B739).

Days with an observed flight (last 30 days)

29/30

Days of the week with an observed flight

Mon, Tue, Wed, Thu, Fri, Sat, Sun

Typical take-off

19:04 UTC · 14:04 local time (ORD)

Typical landing

22:58 UTC · 15:58 local time (SAN)

Typical time airborne

229 min

Median departure delay on this route

−1 min

Departures within 15 minutes of schedule

75 %

Departures measured

144

Our measurement against the airport's published schedule over the last 28 days; the figures cover all flights of this airline on the route.

Aircraft types on this flight (last 30 days)

• BOEING 737-900 (B739) — Number of flights: 40
• BOEING 737 MAX 9 (B39M) — Number of flights: 3

Aircraft in the last 7 days

• N75426 · BOEING 737-900 2026-10-27
• N37434 · BOEING 737-900 2026-10-26
• N37456 · BOEING 737-900 2026-10-25
• N78448 · BOEING 737-900 2026-10-24
• N37422 · BOEING 737-900 2026-10-23
• N66828 · BOEING 737-900 2026-10-22

Related flights on this route

• All flights KORD – KSAN