UA3688United Airlines · PWM → ORD
live · 2h ago
Route confirmed United Airlines

UA3688 PortlandPWM · 07:58 ChicagoORD · 10:00

UA3688 by United Airlines flies from Portland (PWM) to Chicago (ORD).

Right nowNext departure today Operates daily
14:59

scheduled from PWM

⚖ UA3688 typically leaves +4 and lands −15. The air wins minutes back.
Typical gate push+4 minmedian posted departure
Typical arrival−15 minmedian over 10 operations
Wins back in air~19 minmedian gate push vs arrival · how planes make up time → Cancellation0 in 10tracked operations · cancellation odds calculator →

Where the minutes go

last 7 operations · gate push → arrival
0+30+60+90 min
10-30
+1 gate · −1 arrival
10-24
+23 gate · −14 arrival
10-23
+1 gate · −1 arrival
10-22
+4 gate · −28 arrival
10-21
+14 gate · −17 arrival
10-20
+0 gate · −17 arrival
10-19
+35 gate · −12 arrival

The bar is how late it left the gate; the ring is where it actually arrived. Board clocks, not estimates.

The last 30 days

arrival outcome per operation

median arrival −15 min · 0 cancelled · 10 operations tracked

The route today

live boards
PWMPortlandOn-time likelyPWM delay board →
ORDChicagoOn-time likelyORD delay board →
PWM→ORDevery carrier, schedules and on-time historyRoute intelligence →

Weather lens

Delay & cancellation outlook for this flight

Measured, 90-day sample
38%Chance of 15+ min delay
1.7%Chance of cancellation
+9 minTypical airport delay in this weather

Conditions at PWM and ORD are near their clear-air norm right now, so this reflects the route's recent baseline rather than a weather penalty. These figures come from both airports' records under conditions like today's, over the last 90 days.

Pro Flight Search tracking, 90 days · the weather × delay correlation study → · live weather risk by airport →

Tomorrow at Chicago

Forecast

Fri 30 Oct, local date

High15°Clikely 14°C to 17°C
Low8°Clikely 6°C to 10°C
Outlook: below usual
Chance a departure is cancelled
0.6%usually 0.7%
Chance a departure leaves 60+ min late
9.3%usually 12%

Forecast: WeatherTomorrow · incl. data from ECMWF (CC BY 4.0, modified) · Based on about 1,360 departures a day. · Expected values for tomorrow from a forecast model, kept apart from today's measured figures.

When it flies

scheduled departures
061422
M
T
W
T
F
S
S

Each mark is a scheduled departure at its origin-local time. Today is highlighted.

Other Portland to Chicago flights today

same route · United Airlines
UA2170departs 06:00
UA3626departs 06:00
UA646departs 08:29
UA6046departs 11:35
UA1828departs 17:08

If UA3688 is cancelled, these are the other United Airlines nonstop flights from Portland to Chicago on the same day, with scheduled departure times in PWM local time. Most flights that show a delay still operate. Rebooking usually helps only when that delay is very large. Every airline on this route →

How UA3688 actually runs

Pro Flight Search has tracked every published board update for UA3688 across the PWM and ORD boards: schedule changes, gate pushes and actual clocks. Usually lands ~15 min early. Based on 10 confirmed landings · 10/10 within 15 min of schedule. Pushes back late but makes up time in the air.

The verdict above is that record speaking, so it reflects how UA3688 operates rather than what the timetable promises. Numbers refresh as new flights operate.

Technical record

How this operation is measured

board clocksaircraft

Board log

scheduled → actual, per operation
10-30PWM 07:58 07:59 (+1)ORD 10:00 09:59 (−1)
10-24PWM 07:58 08:21 (+23)ORD 10:00 09:46 (−14)
10-23PWM 07:58 07:59 (+1)ORD 10:00 09:59 (−1)
10-22PWM 07:58 08:02 (+4)ORD 10:00 09:32 (−28)
10-21PWM 07:58 08:12 (+14)ORD 10:00 09:43 (−17)
10-20PWM 07:58 (+0)ORD 10:00 09:43 (−17)
10-19PWM 07:58 08:33 (+35)ORD 10:00 09:48 (−12)
10-18PWM 07:58 08:21 (+23)ORD 10:00 09:44 (−16)
10-17PWM 07:58 08:02 (+4)ORD 10:00 09:36 (−24)
10-16PWM ORD 10:00 09:52 (−8)

Aircraft

Recent tails: N762YX, N782YX, N724YX, N785YX.

Board clocks recorded as PWM and ORD published them.

Planning around UA3688? 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: UA3688 Portland to Chicago on-time performance, measured from the PWM and ORD airport boards.

Canonical URL
https://proflightsearch.com/flight/UA3688
How we measure this →