Informational Guide to Seattle–Tacoma Airport - Seatac (SEA) - NON OFFICIAL

UA661 United Airlines - Flight Status

Below, you can find details about United Airlines flight UA661, which currently operates between the airports of Seattle - Seattle-Tacoma International Airport (Airport Code SEA) and Newark - Newark Liberty International Airport (Airport Code EWR).
This flight data pertains specifically to the flight's details for Tuesday, October 28, 2025.

UA661 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

UA661 United Airlines to Newark

Landed - On-time
Flight Status for Tuesday October 28, 2025
This flight was also scheduled for Yesterday (October 27, 2025). See it here
This flight is also scheduled for Tomorrow (October 29, 2025). See it here

Airline information

United Airlines
United Airlines
Equipment: Boeing 737-900 (winglets) Passenger/BBJ3

Departure

Seattle (SEA)
October 28, 2025
Seattle-Tacoma International Airport
Departed at:
06:05 am
Gate:
A10
Scheduled Departure Time: 06:14 am

Arrival

Newark (EWR)
October 28, 2025
Newark Liberty International Airport
Arrived at:
02:27 pm
Terminal:
A
Gate:
A24
Scheduled Arrival Time: 02:30 pm
Baggage: 3
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.seattle-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.

Codeshare Flights

This flight is shared with other airlines, this means that these other flights are the same:

- TP8561 - TAP Air Portugal

Additional Information

Which is the frequency of flight UA661?
The flight UA661 is scheduled to flight on Monday, Tuesday, Sunday on a weekly basis.

Which is the distance of flight UA661?
The distance between the two airports is 2395 miles.

Are the departure airport and arrival airport at the same Time Zone?
No, each airport is in a different timezone. The times shown above, are presented in the local time of each respective airport.
Current Time in Seattle: 2025-10-28 13:04:20
Current Time in Newark: 2025-10-28 16:04:20

Alternative Flights

The following airlines serves the same route between Seattle and Newark:

Alaska Airlines
- Flight Number: AS295. (On Time performance: 85 - Average Delay: 8 minutes)
- Flight Number: AS298. (On Time performance: 82 - Average Delay: 10 minutes)
- Flight Number: AS314. (On Time performance: 82 - Average Delay: 7 minutes)
- Flight Number: AS477. (On Time performance: 62 - Average Delay: 22 minutes)

United Airlines
- Flight Number: UA1856. (On Time performance: 58 - Average Delay: 18 minutes)
- Flight Number: UA2402. (On Time performance: 84 - Average Delay: 15 minutes)
- Flight Number: UA341. (On Time performance: 85 - Average Delay: 17 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: It is not possible to calculate the On-Time Performance for this flight accurately by month due to insufficient or non-representative data, as doing so could lead to misleading conclusions

Last Past Flights UA661

Date
Departure
Arrival
Duration
Aircraft
Status
Monday
27 October
06:19 am
Seattle (SEA)
02:26 pm
Newark (EWR)
05h 07min
Boeing 737-900
Boeing 737-900
Landed - On-time
Sunday
26 October
05:55 am
Seattle (SEA)
02:09 pm
Newark (EWR)
05h 14min
Boeing 737MAX
Boeing 737MAX
Landed - On-time