Informational Guide to Ontario Airport (ONT) - NON OFFICIAL

5X9871 UPS - Flight Status

Below, you can find details about UPS flight 5X9871, which currently operates between the airports of Seattle - King County International Airport (Airport Code BFI) and Ontario - Ontario International Airport (Airport Code ONT).
This flight data pertains specifically to the flight's details for Friday, August 29, 2025.

5X9871 On Time performance:
n/a
It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Flight Status

5X9871 UPS from Seattle

This flight is not scheduled for August 31, 2025.

Airline information

UPS

Departure

Seattle (BFI)
August 29, 2025
King County International Airport

Arrival

Ontario (ONT)
August 29, 2025
Ontario International Airport
Disclaimer
The information displayed on this website is gathered from third-party providers with a wide reputation on the sector, which in turn obtain the information from the airlines. This data is provided only for informative purposes. www.ontario-airport.com assumes no responsibility for loss or damage as a result of relying on information posted here. Please contact your airline to verify flight status.

Additional Information

Which is the frequency of flight 5X9871?
The flight 5X9871 is currently not scheduled at Ontario Airport (ONT).

Which is the distance of flight 5X9871?
The distance between the two airports is 963 miles.

Are the departure airport and arrival airport at the same Time Zone?
Yes, both airports are in the same timezone.

Alternative Flights

The following airline serve the same route between Seattle and Ontario:
UPS - Flight Number: 5X2983. (On Time performance: 85 - Average Delay: 8 minutes)

Punctuality and delays

It is not possible to calculate the On-Time Performance for this flight accurately due to insufficient or non-representative data, as doing so could lead to misleading conclusions.

Delays analyzed by Week: It is not possible to calculate the On-Time Performance for this flight accurately by weekday due to insufficient or non-representative data, as doing so could lead to misleading conclusions
Delays analyzed by Month: We have gathered available data from last twelve closed months, spanning from August 07, 2024 to September 04, 2024. Next, you can observe the results broken down by month: number of flights analyzed, on-time performance per month, and average delay per month.

Note: We have excluded some months from the graph, since the quantity and quality of the data is not representative enough.

Last Past Flights 5X9871

Date
Departure
Arrival
Duration
Aircraft
Status
Friday
29 August
05:20 am
Seattle (BFI)
07:22 am
Ontario (ONT)
02h 02min
Boeing 757-200
Boeing 757-200
Landed - On-time
Friday
01 August
05:17 am
Seattle (BFI)
07:30 am
Ontario (ONT)
02h 13min
Boeing 757-200
Boeing 757-200
Landed - On-time