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United Airlines

Is UA2331 delayed?

Each route and date is shown separately. Confirm that both airports match your booking.

Service date: · Scheduled departure date (America/Chicago)

Arrived

15 min early

Updated

Departure

Chicago

ORD

Actual

Scheduled 18:24

Aug 27

Arrival

Boston

BOS

Actual

Scheduled 21:59

Aug 27

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Not available
Actual

Arrival · UTC

Scheduled
Estimated
Not available
Actual

Service date: · Scheduled departure date (America/New_York)

Arrived

101 min late

Official source · Updated

Departure

Dulles

IAD

Actual

Scheduled 13:10

Aug 27

Arrival

Chicago

ORD

Actual

Scheduled 14:27

Aug 27

Times shown in airport local time

Flight details

Departure · UTC

Scheduled
Estimated
Actual

Arrival · UTC

Scheduled
Estimated
Actual
Route overview: Chicago → BostonORDBOS
Route overview
Route overview: Dulles → ChicagoIADORD
Route overview

Recent arrivals

Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.

  • IAD → ORD

    On time

  • TPA → IAD

    9 min early

  • ORD → BOS

    120 min late

  • IAD → ORD

    124 min late

  • TPA → IAD

    4 min early
Flight history and details

Aug 19, 2026 — Sep 18, 2026

Observed arrivals
68
Arrivals over 15 minutes late
19
Observed cancellations
0
Observed occurrences
71

Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.

How flight status works

UA2331 Recent arrival history
Service dateDepartureArrivalActualArrival delay (minutes)
Sep 18, 2026ArrivedDullesChicago
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0
Sep 18, 2026ArrivedTampaDulles
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-9
Sep 17, 2026ArrivedChicagoBoston
View this flight’s market
120
Sep 17, 2026ArrivedDullesChicago
124
Sep 17, 2026ArrivedTampaDulles
-4
Sep 16, 2026ArrivedChicagoBoston
30
Sep 16, 2026ArrivedDullesChicago
1
Sep 16, 2026ArrivedTampaDulles
-11
Sep 15, 2026ArrivedChicagoBoston
111
Sep 15, 2026ArrivedDullesChicago
94
Sep 15, 2026ArrivedTampaDulles
-15
Sep 14, 2026ArrivedChicagoBoston
-12
Sep 14, 2026ArrivedDullesChicago
11
Sep 14, 2026ArrivedTampaDulles
-19
Sep 13, 2026ArrivedChicagoBoston
11
Sep 13, 2026ArrivedDullesChicago
-31
Sep 13, 2026ArrivedTampaDulles
-13
Sep 12, 2026ArrivedChicagoBoston
43
Sep 12, 2026ArrivedDullesChicago
-12
Sep 12, 2026ArrivedTampaDulles
-10
Sep 11, 2026ArrivedChicagoBoston
5
Sep 11, 2026ArrivedDullesChicago
-2
Sep 11, 2026ArrivedTampaDulles
-15
Sep 10, 2026ArrivedChicagoBoston
13
Sep 10, 2026ArrivedDullesChicago
-12
Sep 10, 2026ArrivedTampaDulles
-12
Sep 9, 2026ArrivedChicagoBoston
15
Sep 9, 2026ArrivedDullesChicago
-35
Sep 9, 2026ArrivedTampaDulles
23
Sep 8, 2026ArrivedChicagoBoston
-24
Sep 8, 2026ArrivedDullesChicago
-35
Sep 8, 2026ArrivedTampaDulles
-9
Sep 7, 2026ArrivedChicagoBoston
13
Sep 7, 2026ArrivedDullesChicago
-33
Sep 7, 2026ArrivedTampaDulles
-2
Sep 6, 2026ArrivedChicagoBoston
188
Sep 6, 2026ArrivedDullesChicago
-35
Sep 6, 2026ArrivedTampaDulles
-13
Sep 5, 2026ArrivedChicagoBoston
36
Sep 5, 2026ArrivedDullesChicago
-15
Sep 5, 2026ArrivedTampaDulles
-12
Sep 4, 2026ArrivedChicagoBoston
28
Sep 4, 2026ArrivedDullesChicago
28
Sep 4, 2026ArrivedTampaDulles
-5
Sep 3, 2026ArrivedChicagoBoston
131
Sep 3, 2026ArrivedDullesChicago
69
Sep 2, 2026ArrivedChicagoBoston
173
Sep 2, 2026ArrivedDullesChicago
-21
Sep 1, 2026ArrivedDullesChicago
-22
Aug 31, 2026ArrivedDullesChicago
18
Aug 30, 2026ArrivedDullesChicago
-17
Aug 29, 2026ArrivedChicagoBoston
6
Aug 29, 2026ArrivedDullesChicago
-34
Aug 28, 2026ArrivedChicagoBoston
-4
Aug 28, 2026ArrivedDullesChicago
-30
Aug 27, 2026ArrivedChicagoBoston
-15
Aug 27, 2026ArrivedDullesChicago
101
Aug 26, 2026ArrivedChicagoBoston
32
Aug 26, 2026ArrivedDullesChicago
-32
Aug 25, 2026ArrivedChicagoBoston
-11
Aug 25, 2026ArrivedDullesChicago
-39
Aug 24, 2026ArrivedChicagoBoston
5
Aug 24, 2026ArrivedDullesChicago
-34
Aug 23, 2026ArrivedChicagoBoston
113
Aug 23, 2026ArrivedDullesChicago
-15
Aug 22, 2026ArrivedDullesChicago
-24
Aug 21, 2026ArrivedChicagoBoston
135
Aug 20, 2026ArrivedDullesChicago
-31

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