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United Airlines

Is UA4304 delayed?

UA4304 left Dulles 10 min early, at 22:20 on Sep 29; its arrival time is not confirmed yet.

Usually on time: arrived within 15 min of schedule on 19 of the last 22 flights.

DepartedLast reported

10 min early

This update may be out of date. Check with your airline.

Update time unavailable

Departure

Dulles

IAD

Actual

Scheduled 22:31

Sep 29

Arrival

Knoxville

TYS

Scheduled

Sep 29

Times shown in airport local time

Service date: · Scheduled departure date (America/New_York)

In the air. The market on this flight settles on the airport’s recorded arrival.

View this flight’s marketHow this market settles

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual

Arrival · UTC

Scheduled
Estimated
Not available
Actual
Not available
View this flight’s market

Market prices express trading expectations about a contract’s stated threshold. They do not confirm airline status. The linked market shows its terms and activity.

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • Dulles → Knoxville

    21 min early

  • Dulles → Knoxville

    On schedule (15 min behind)

  • Dulles → Knoxville

    23 min early

  • Dulles → Knoxville

    14 min early

  • Dulles → Knoxville

    29 min early

Is UA4304 usually late?

Observation window: Aug 31, 2026 – Sep 30, 2026

Observed arrivals
22
On time
86%
of 22 arrivals
Late
14%
of 22 arrivals
Cancelled
0%
of 26 flights
Median arrival delay
15 min early
9 in 10 arrived within
26 min

On time means arriving no more than 15 minutes after the scheduled time; late means more than 15 minutes after. Cancelled and diverted flights are counted apart from arrivals. Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

At the airports today

Dulles (IAD) departures

Left more than 15 min late
31 of 206
Cancelled today
0

Related flights

Other flights IAD → KTYS

Return flights KTYS → IAD

All United Airlines flights

Flight history and details
UA4304 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 28, 2026ArrivedDullesKnoxville-21
Sep 27, 2026ArrivedDullesKnoxville15
Sep 26, 2026ArrivedDullesKnoxville-23
Sep 25, 2026ArrivedDullesKnoxville-14
Sep 24, 2026ArrivedDullesKnoxville-29
Sep 23, 2026ArrivedDullesKnoxville-3
Sep 22, 2026ArrivedDullesKnoxville1
Sep 21, 2026ArrivedDullesKnoxville-11
Sep 20, 2026ArrivedDullesKnoxville-13
Sep 18, 2026ArrivedDullesKnoxville27
Sep 17, 2026ArrivedDullesKnoxville29
Sep 16, 2026ArrivedDullesKnoxville-23
Sep 15, 2026ArrivedDullesKnoxville-6
Sep 14, 2026ArrivedDullesKnoxville-19
Sep 11, 2026ArrivedDullesKnoxville-32
Sep 10, 2026ArrivedDullesKnoxville-15
Sep 9, 2026ArrivedDullesKnoxville-32
Sep 8, 2026ArrivedDullesKnoxville-36
Sep 7, 2026ArrivedDullesKnoxville-30
Sep 6, 2026ArrivedDullesKnoxville-15
Sep 5, 2026ArrivedDullesKnoxville-8
Sep 4, 2026ArrivedDullesKnoxville35

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