UA304 · UAL304

UAL304 over the last 30 days

As of 2026-10-26

UAL304 is operated by United Airlines on the route Chicago O'Hare International Airport (ORD/KORD) → Washington Dulles International Airport (IAD/KIAD). It usually takes off around 01:14 UTC (20:14 local time, ORD). It usually lands around 02:35 UTC (22:35 local time, IAD). 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

01:14 UTC · 20:14 local time (ORD)

Typical landing

02:35 UTC · 22:35 local time (IAD)

Typical time airborne

81 min

Median departure delay on this route

−2 min

Departures within 15 minutes of schedule

85 %

Departures measured

207

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: 26
• BOEING 737 MAX 9 (B39M) — Number of flights: 3
• BOEING 737-800 (B738) — Number of flights: 1

Aircraft in the last 7 days

• N17468 · BOEING 737 MAX 9 2026-10-26
• N77592 · BOEING 737 MAX 9 2026-10-25
• N61898 · BOEING 737-900 2026-10-25
• N78285 · BOEING 737-800 2026-10-24
• N67845 · BOEING 737-900 2026-10-23
• N53442 · BOEING 737-900 2026-10-22

Related flights on this route

• All flights KORD – KIAD