UAL1640 is operated by WILMINGTON TRUST CO TRUSTEE between Fairbanks International Airport (PAFA) and Chicago O'Hare International Airport (KORD). The flight is most often flown by a BOEING Boeing 737 MAX 9. Typical block time is 4h 34m. SkyMeter has observed 89 legs of this flight number via ADS-B.

✈
FLIGHTS
89
last 90 days
⏱
AVG DURATION
4h 34m
tracked time
📅
SERVICE PERIOD
05/27/2025 → 07/19/2026
first → last seen
🗺
ROUTES / TYPES
6 / 3
city pairs · airframes
⚠
INCIDENT RATE
1.1%
1 flagged

Routes flown

By count · last 90 days

4
PAFA → KORD
46
avg 5h 50m · Fairbanks → Chicago O'Hare
KFLL → KEWR
18
avg 2h 44m · Fort Lauderdale Hollywood → Newark Liberty
1AK9 → KORD
11
avg 5h 52m · Tundra Copter Heliport → Chicago O'Hare
KIAH → KSTL
7
avg 1h 42m · George Bush Intercontinental Houston → St Louis Lambert

Aircraft types

Equipment used on this number

3
B39M BOEING Boeing 737 MAX 9
66
B739 BOEING Boeing 737-900
18
A320 AIRBUS Airbus A320
7

Safety profile

Flagged flights · last 90 days

Go-arounds
1
Unstable approach
0
Rejected TO
0
Stall warnings
0
Overspeeds
0
Runway excursion
0
Counts represent flights with at least one occurrence of each flag, not the total event count. See /incidents for individual events.

Recent flights

Newest 30 operations of UAL1640

30
N37527BOEING Boeing 737 MAX 9
→
07/19/2026
19m
No alerts
Replay Analysis
N37527BOEING Boeing 737 MAX 9
→
07/19/2026
5h 39m
No alerts
Replay Analysis
N57451BOEING Boeing 737 MAX 9
→
07/18/2026
5h 21m
No alerts
Replay Analysis
N27568BOEING Boeing 737 MAX 9
→
07/17/2026
5h 31m
No alerts
Replay Analysis
N17418BOEING Boeing 737 MAX 9
→
07/16/2026
5h 35m
No alerts
Replay Analysis
N17402BOEING Boeing 737 MAX 9
→
07/15/2026
5h 25m
No alerts
Replay Analysis
N37440BOEING Boeing 737 MAX 9
→
07/14/2026
5h 50m
No alerts
Replay Analysis
N37450BOEING Boeing 737 MAX 9
→
07/13/2026
5m
No alerts
Replay Analysis
N37450BOEING Boeing 737 MAX 9
→
07/13/2026
5h 47m
No alerts
Replay Analysis
N17436BOEING Boeing 737 MAX 9
→
07/12/2026
5h 42m
No alerts
Replay Analysis
N37528BOEING Boeing 737 MAX 9
→
07/11/2026
6h 1m
No alerts
Replay Analysis
N47412BOEING Boeing 737 MAX 9
→
07/10/2026
5h 35m
No alerts
Replay Analysis
N37504BOEING Boeing 737 MAX 9
→
07/09/2026
6h 13m
↻ Go-around
Replay Analysis
N17459BOEING Boeing 737 MAX 9
→
07/08/2026
5h 47m
No alerts
Replay Analysis
N17459BOEING Boeing 737 MAX 9
→
07/07/2026
8m
No alerts
Replay Analysis
N17459BOEING Boeing 737 MAX 9
→
07/07/2026
5h 26m
No alerts
Replay Analysis
N17411BOEING Boeing 737 MAX 9
→
07/06/2026
5h 39m
No alerts
Replay Analysis
N77573BOEING Boeing 737 MAX 9
→
07/05/2026
5h 58m
No alerts
Replay Analysis
N27526BOEING Boeing 737 MAX 9
→
07/04/2026
6h 5m
No alerts
Replay Analysis
N37534BOEING Boeing 737 MAX 9
→
07/03/2026
5m
No alerts
Replay Analysis
N37534BOEING Boeing 737 MAX 9
→
07/03/2026
5h 55m
No alerts
Replay Analysis
N37561BOEING Boeing 737 MAX 9
→
07/02/2026
6h 6m
No alerts
Replay Analysis
N37525BOEING Boeing 737 MAX 9
→
07/01/2026
6h 5m
No alerts
Replay Analysis
N37450BOEING Boeing 737 MAX 9
→
06/30/2026
6h 18m
No alerts
Replay Analysis
N37450BOEING Boeing 737 MAX 9
→
06/29/2026
6h 2m
No alerts
Replay Analysis
N77578BOEING Boeing 737 MAX 9
→
06/28/2026
5h 39m
No alerts
Replay Analysis
N47412BOEING Boeing 737 MAX 9
→
06/27/2026
5h 35m
No alerts
Replay Analysis
N17403BOEING Boeing 737 MAX 9
→
06/26/2026
5h 53m
No alerts
Replay Analysis
N17418BOEING Boeing 737 MAX 9
→
06/25/2026
5h 41m
No alerts
Replay Analysis
N17455BOEING Boeing 737 MAX 9
→
06/24/2026
5h 50m
No alerts
Replay Analysis
© SkyMeter · All flight data subject to ODbL attribution · Tracked: 90-day window