Airport Tips & Quick Reference Guide to Seattle–Tacoma Airport - Seatac (SEA)

UA2101 United Airlines - Flight Status

Codeshare Flights
The flight LH7537 from Lufthansa (LH) is a codeshare flight operated by United Airlines (UA) under the flight number UA2101. Check this page for details about flight UA2101.

Below, you can find details about United Airlines flight UA2101, which currently operates between the airports of Seattle - Seattle-Tacoma International Airport (Airport Code SEA) and Chicago - Chicago O'Hare International Airport (Airport Code ORD).
This flight data pertains specifically to the flight's details for Sunday, April 26, 2026.

UA2101 On Time performance:
61
We have calculated the percentage of flights that arrived within 15 minutes of their scheduled time, or earlier, based on real flight data from the last 3 months. More about punctuality and delays

Flight Status

UA2101 United Airlines to Chicago

Landed - On-time
Flight Status for Sunday April 26, 2026
This flight is also scheduled for Today (April 27, 2026). See it here
This flight is also scheduled for Tomorrow (April 28, 2026). See it here

Airline information

United Airlines
United Airlines
Equipment: Boeing 737-900 Passenger (Scimitar Winglets)

Departure

Seattle (SEA)
April 26, 2026
Seattle-Tacoma International Airport
Departed at:
02:31 pm
Gate:
B15
Scheduled Departure Time: 02:39 pm

Arrival

Chicago (ORD)
April 26, 2026
Chicago O'Hare International Airport
Arrived at:
08:37 pm
Terminal:
1
Gate:
C3
Scheduled Arrival Time: 08:50 pm
Baggage: 6
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:

- LH7537 - Lufthansa

Additional Information

Which is the frequency of flight UA2101?
The flight UA2101 is scheduled to flight on Monday, Tuesday, Wednesday, Thursday, Friday, Sunday on a weekly basis.

Which is the distance of flight UA2101?
The distance between the two airports is 1716 miles.

Which is the flight time of flight UA2101?
The scheduled flight time gate to gate is: 04:11 hours.
The real flight time gate to gate on average is: 04:20 hours.

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: 2026-04-27 20:05:49
Current Time in Chicago: 2026-04-27 22:05:49

Alternative Flights

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

American Airlines
- Flight Number: AA1106. (On Time performance: 67 - Average Delay: 66 minutes)
- Flight Number: AA2398. (On Time performance: 63 - Average Delay: 28 minutes)
- Flight Number: AA2741. (On Time performance: 75 - Average Delay: 61 minutes)
- Flight Number: AA2768. (On Time performance: 30 - Average Delay: 58 minutes)
- Flight Number: AA2775. (On Time performance: 89 - Average Delay: 13 minutes)
- Flight Number: AA885. (On Time performance: 83 - Average Delay: 25 minutes)

Alaska Airlines
- Flight Number: AS265. (On Time performance: 84 - Average Delay: 13 minutes)
- Flight Number: AS328. (On Time performance: 93 - Average Delay: 4 minutes)
- Flight Number: AS410. (On Time performance: 77 - Average Delay: 14 minutes)
- Flight Number: AS429. (On Time performance: 90 - Average Delay: 5 minutes)
- Flight Number: AS538. (On Time performance: 82 - Average Delay: 12 minutes)

China Cargo Airlines
- Flight Number: CK225. (On Time performance: 100 - Average Delay: 0 minutes)
- Flight Number: CK227. (On Time performance: 91 - Average Delay: 4 minutes)

Delta Air Lines
- Flight Number: DL1564. (On Time performance: 81 - Average Delay: 34 minutes)
- Flight Number: DL2055. (On Time performance: 85 - Average Delay: 9 minutes)
- Flight Number: DL2108. (On Time performance: 75 - Average Delay: 22 minutes)
- Flight Number: DL637. (On Time performance: 60 - Average Delay: 10 minutes)

United Airlines
- Flight Number: UA1763. (On Time performance: 90 - Average Delay: 6 minutes)
- Flight Number: UA2618. (On Time performance: 90 - Average Delay: 18 minutes)
- Flight Number: UA464. (On Time performance: 81 - Average Delay: 29 minutes)
- Flight Number: UA747. (On Time performance: 88 - Average Delay: 16 minutes)

Punctuality and delays

We have gathered data from recent months and present below an analysis of how timely the flights have been.

In terms of On-Time Performance, by analyzing the flight data from the last three months, spanning from March 29, 2026 to April 17, 2026, we have obtained these figures.
Total number of flights: 18
On Time: 11 ( 61 % )
Moderate Delay: 2 ( 11 % )
Significant Delay: 1 ( 6 % )
Major Delay: 4 ( 22 % )
Canceled: 0 ( 0 % )
Diverted: 0 ( 0 % )

Average Delay: 30 minutes.
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 UA2101

Date
Departure
Arrival
Duration
Aircraft
Status
Sunday
26 April
02:31 pm
Seattle (SEA)
08:37 pm
Chicago (ORD)
04h 06min
Boeing 737-900
Boeing 737-900
Landed - On-time
Friday
24 April
02:35 pm
Seattle (SEA)
09:07 pm
Chicago (ORD)
04h 32min
Airbus A320
Airbus A320
Landed - Delayed
Thursday
23 April
02:32 pm
Seattle (SEA)
09:17 pm
Chicago (ORD)
04h 45min
Boeing 737-900
Boeing 737-900
Landed - Delayed
Wednesday
22 April
02:30 pm
Seattle (SEA)
08:37 pm
Chicago (ORD)
04h 07min
Boeing 737-900
Boeing 737-900
Landed - On-time
Tuesday
21 April
02:39 pm
Seattle (SEA)
08:58 pm
Chicago (ORD)
04h 19min
Boeing 737-900
Boeing 737-900
Landed - On-time
Monday
20 April
03:13 pm
Seattle (SEA)
09:01 pm
Chicago (ORD)
03h 48min
Boeing 737-900
Boeing 737-900
Landed - On-time
Sunday
19 April
02:47 pm
Seattle (SEA)
08:44 pm
Chicago (ORD)
03h 57min
Boeing 737-900
Boeing 737-900
Landed - On-time
Friday
17 April
03:01 pm
Seattle (SEA)
10:32 pm
Chicago (ORD)
05h 31min
Airbus A320
Airbus A320
Landed - Delayed
Thursday
16 April
02:35 pm
Seattle (SEA)
08:30 pm
Chicago (ORD)
03h 55min
Boeing 737-900
Boeing 737-900
Landed - On-time
Wednesday
15 April
02:51 pm
Seattle (SEA)
10:07 pm
Chicago (ORD)
05h 16min
Boeing 737-900
Boeing 737-900
Landed - Delayed