Is UA1604 delayed?

No — UA1604 landed in San Francisco 28 min early, at 08:38 on Oct 1 (as of Oct 1, 16:16 UTC).

Usually on time: arrived within 15 min of schedule on 52 of the last 66 flights.

Each route and date is shown separately. Confirm that both airports match your booking.

Arrived

28 min early

Official source · Updated Oct 1, 2026, 16:16 UTC

Departure

Raleigh/Durham

RDU

Scheduled

—

Not available

Arrival

San Francisco

SFO

Actual

Scheduled 09:06

08:38

Oct 1

Times shown in airport local time

Service date: Oct 1, 2026 · Scheduled arrival date; departure time unavailable (America/Los_Angeles)

Market settled: On time.

View this flight’s market How this market settles

Think UA1604 runs late on Oct 2? Delayed is trading at 35¢ — pays out x2.83.

Will United Airlines UAL 1604 from San Francisco to Denver arrive on time, be delayed, or be cancelled on Oct 2?

On time63%Delayed35%Cancelled2%

$30 tradedDeparts Fri, Oct 2, 11:06 AM PDT

How this market settles

Flight details

Departure · UTC

Scheduled: Not available
Estimated: Not available
Actual: Not available

Arrival · UTC

Scheduled: Oct 1, 2026, 16:06 UTC
Estimated: Oct 1, 2026, 15:49 UTC
Actual: Oct 1, 2026, 15:38 UTC

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.

Arrived

On schedule (8 min behind)

Official source · Updated Oct 1, 2026, 20:38 UTC

Departure

San Francisco

SFO

Actual

Scheduled 11:06

11:26

Oct 1

Arrival

Denver

DEN

Actual

Scheduled 14:29

14:37

Oct 1

Times shown in airport local time

Service date: Oct 1, 2026 · Scheduled departure date (America/Los_Angeles)

Flight details

Departure · UTC

Scheduled: Oct 1, 2026, 18:06 UTC
Estimated: Not available
Actual: Oct 1, 2026, 18:26 UTC

Arrival · UTC

Scheduled: Oct 1, 2026, 20:29 UTC
Estimated: Not available
Actual: Oct 1, 2026, 20:37 UTC

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.

Arrived

12 min early

Official source · Updated Oct 2, 2026, 00:29 UTC

Departure

Denver

DEN

Actual

Scheduled 16:41

16:40

Oct 1

Arrival

Reno

RNO

Actual

Scheduled 17:41

17:29

Oct 1

Times shown in airport local time

Service date: Oct 1, 2026 · Scheduled departure date (America/Denver)

Flight details

Departure · UTC

Scheduled: Oct 1, 2026, 22:41 UTC
Estimated: Not available
Actual: Oct 1, 2026, 22:40 UTC

Arrival · UTC

Scheduled: Oct 2, 2026, 00:41 UTC
Estimated: Not available
Actual: Oct 2, 2026, 00:29 UTC

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.

Also sold as NZ9557, VA8527

RDUSFO

San Francisco → Denver

DENRNO

Recent arrivals

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

Thu, Oct 1, 2026
Denver → Reno
12 min early
Thu, Oct 1, 2026
San Francisco → Denver
On schedule (8 min behind)
Thu, Oct 1, 2026
Raleigh/Durham → San Francisco
28 min early
Wed, Sep 30, 2026
San Francisco → Denver
On schedule (8 min behind)
Tue, Sep 29, 2026
Denver → Reno
18 min early

Is UA1604 usually late?

Observation window: Sep 2, 2026 – Oct 2, 2026

Observed arrivals

On time

79%

of 66 arrivals

Late

21%

of 66 arrivals

Cancelled

of 72 flights

Median arrival delay

3 min early

9 in 10 arrived within

24 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

San Francisco (SFO) departures

Left more than 15 min late: 238 of 449
Cancelled today: 7

Other flights DEN → KRNO

Return flights KRNO → DEN

Airports

Denver International Airport (DEN)

All United Airlines flights

Flight history and details

UA1604 Recent arrival history
Service date	Departure	Arrival	Actual	Arrival delay (minutes)
Oct 1, 2026Arrived	Denver	Reno	Oct 2, 2026, 00:29 UTC View this flight’s market	-12
Oct 1, 2026Arrived	San Francisco	Denver	Oct 1, 2026, 20:37 UTC View this flight’s market	8
Oct 1, 2026Arrived	Raleigh/Durham	San Francisco	Oct 1, 2026, 15:38 UTC View this flight’s market	-28
Sep 30, 2026Arrived	San Francisco	Denver	Sep 30, 2026, 20:25 UTC	8
Sep 29, 2026Arrived	Denver	Reno	Sep 30, 2026, 00:18 UTC	-18
Sep 29, 2026Arrived	San Francisco	Denver	Sep 29, 2026, 20:28 UTC	11
Sep 28, 2026Arrived	Denver	Reno	Sep 29, 2026, 00:38 UTC	-2
Sep 28, 2026Arrived	San Francisco	Denver	Sep 28, 2026, 20:37 UTC	20
Sep 28, 2026Arrived	Raleigh/Durham	San Francisco	Sep 28, 2026, 16:20 UTC	4
Sep 27, 2026Arrived	Denver	Reno	Sep 28, 2026, 00:50 UTC	14
Sep 27, 2026Arrived	San Francisco	Denver	Sep 27, 2026, 20:36 UTC	19
Sep 27, 2026Arrived	Raleigh/Durham	San Francisco	Sep 27, 2026, 16:14 UTC	8
Sep 26, 2026Arrived	Denver	Reno	Sep 27, 2026, 00:34 UTC	-2
Sep 26, 2026Arrived	San Francisco	Denver	Sep 26, 2026, 20:16 UTC	-1
Sep 26, 2026Arrived	Raleigh/Durham	San Francisco	Sep 26, 2026, 15:47 UTC	-19
Sep 25, 2026Arrived	San Francisco	Denver	Sep 25, 2026, 20:57 UTC	44
Sep 25, 2026Arrived	Raleigh/Durham	San Francisco	Sep 25, 2026, 15:51 UTC	-25
Sep 24, 2026Arrived	Denver	Reno	Sep 25, 2026, 00:28 UTC	-8
Sep 24, 2026Arrived	San Francisco	Denver	Sep 24, 2026, 20:20 UTC	-3
Sep 24, 2026Arrived	Raleigh/Durham	San Francisco	Sep 24, 2026, 15:36 UTC	-30
Sep 23, 2026Arrived	Denver	Reno	Sep 23, 2026, 23:56 UTC	-15
Sep 23, 2026Arrived	San Francisco	Denver	Sep 23, 2026, 20:41 UTC	16
Sep 23, 2026Arrived	Raleigh/Durham	San Francisco	Sep 23, 2026, 16:11 UTC	-19
Sep 22, 2026Arrived	Denver	Reno	Sep 23, 2026, 00:02 UTC	-9
Sep 22, 2026Arrived	San Francisco	Denver	Sep 22, 2026, 20:57 UTC	32
Sep 22, 2026Arrived	Raleigh/Durham	San Francisco	Sep 22, 2026, 16:06 UTC	-14
Sep 21, 2026Arrived	Denver	Reno	Sep 21, 2026, 23:55 UTC	-16
Sep 21, 2026Arrived	San Francisco	Denver	Sep 21, 2026, 20:29 UTC	4
Sep 21, 2026Arrived	Raleigh/Durham	San Francisco	Sep 21, 2026, 15:39 UTC	-19
Sep 20, 2026Arrived	Denver	Reno	Sep 21, 2026, 00:09 UTC	-2
Sep 20, 2026Arrived	San Francisco	Denver	Sep 20, 2026, 20:31 UTC	6
Sep 20, 2026Arrived	Raleigh/Durham	San Francisco	Sep 20, 2026, 15:50 UTC	-22
Sep 19, 2026Arrived	Denver	Reno	Sep 20, 2026, 00:43 UTC	32
Sep 19, 2026Arrived	San Francisco	Denver	Sep 19, 2026, 20:10 UTC	-14
Sep 19, 2026Arrived	Raleigh/Durham	San Francisco	Sep 19, 2026, 15:32 UTC	-26
Sep 18, 2026Arrived	Denver	Reno	Sep 19, 2026, 00:31 UTC	20
Sep 18, 2026Arrived	San Francisco	Denver	Sep 18, 2026, 20:43 UTC	18
Sep 18, 2026Arrived	Raleigh/Durham	San Francisco	Sep 18, 2026, 15:53 UTC	-14
Sep 17, 2026Arrived	Denver	Reno	Sep 18, 2026, 00:18 UTC	7
Sep 17, 2026Arrived	San Francisco	Denver	Sep 17, 2026, 20:16 UTC	-9
Sep 16, 2026Arrived	Denver	Reno	Sep 17, 2026, 00:31 UTC	20
Sep 16, 2026Arrived	San Francisco	Denver	Sep 16, 2026, 20:56 UTC	31
Sep 16, 2026Arrived	Raleigh/Durham	San Francisco	Sep 16, 2026, 16:00 UTC	-22
Sep 15, 2026Arrived	Denver	Reno	Sep 16, 2026, 00:15 UTC	1
Sep 15, 2026Arrived	San Francisco	Denver	Sep 15, 2026, 20:35 UTC	10
Sep 15, 2026Arrived	Raleigh/Durham	San Francisco	Sep 15, 2026, 15:59 UTC	-21
Sep 14, 2026Arrived	Denver	Reno	Sep 14, 2026, 23:57 UTC	-14
Sep 14, 2026Arrived	Raleigh/Durham	San Francisco	Sep 14, 2026, 15:37 UTC	-21
Sep 13, 2026Arrived	San Francisco	Denver	Sep 13, 2026, 20:18 UTC	-3
Sep 13, 2026Arrived	Raleigh/Durham	San Francisco	Sep 13, 2026, 15:56 UTC	-24
Sep 12, 2026Arrived	Denver	Reno	Sep 13, 2026, 00:06 UTC	-5
Sep 12, 2026Arrived	San Francisco	Denver	Sep 12, 2026, 20:07 UTC	-17
Sep 12, 2026Arrived	Raleigh/Durham	San Francisco	Sep 12, 2026, 15:17 UTC	-31
Sep 11, 2026Arrived	Denver	Reno	Sep 12, 2026, 00:07 UTC	-4
Sep 11, 2026Arrived	Raleigh/Durham	San Francisco	Sep 11, 2026, 16:08 UTC	1
Sep 10, 2026Arrived	Denver	Reno	Sep 11, 2026, 00:42 UTC	31
Sep 10, 2026Arrived	San Francisco	Denver	Sep 10, 2026, 20:46 UTC	21
Sep 9, 2026Arrived	Denver	Reno	Sep 10, 2026, 00:02 UTC	-9
Sep 9, 2026Arrived	San Francisco	Denver	Sep 9, 2026, 20:52 UTC	27
Sep 9, 2026Arrived	Raleigh/Durham	San Francisco	Sep 9, 2026, 16:01 UTC	-21
Sep 8, 2026Arrived	San Francisco	Denver	Sep 8, 2026, 22:02 UTC	97
Sep 8, 2026Arrived	Raleigh/Durham	San Francisco	Sep 8, 2026, 15:38 UTC	-34
Sep 7, 2026Arrived	Denver	Reno	Sep 8, 2026, 00:19 UTC	8
Sep 6, 2026Arrived	Denver	Reno	Sep 7, 2026, 00:23 UTC	12
Sep 5, 2026Arrived	Denver	Reno	Sep 5, 2026, 23:50 UTC	-27
Sep 4, 2026Arrived	Denver	Reno	Sep 5, 2026, 00:09 UTC	-8

Email me if UA1604 runs late

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Is UA1604 delayed?

28 min early

Raleigh/Durham

San Francisco

Departure · UTC

Arrival · UTC

On schedule (8 min behind)

San Francisco

Denver

Departure · UTC

Arrival · UTC

12 min early

Denver

Reno

Departure · UTC

Arrival · UTC

Recent arrivals

Is UA1604 usually late?

At the airports today

San Francisco (SFO) departures

Related flights

Other flights DEN → KRNO

Return flights KRNO → DEN

Airports

Email me if UA1604 runs late