Apparatus

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flight_takeoff Flight

UAL688

Operated by UAL

Live map

Live map filtered to UAL688. Shown when the flight is currently airborne.

Upcoming flights 1 scheduled

From To Scheduled departure Estimated arrival Status
SEA IAD May 30, 03:23 PM UTC May 30, 08:04 PM UTC PLANNED

Route airports View route page →

Departure

SEA KSEA MVFR

Seattle–Tacoma International Airport

Seattle, US

Local time
00:18 PDT
Timezone
America/Los_Angeles
Type
Large Airport
Elevation
433 ft
Coordinates
47.4479, -122.3103

cloud Weather

Wind
30° / 6 kt
Visibility
4 SM
Ceiling
FEW 1,500 ft, BKN 3,300 ft, OVC 4,500 ft
Temp / Dew
9°C / 7°C
Altimeter
30.17 inHg
Wx
-RA BR

Obs: 2026-05-30T06:53:00.000Z

Raw METAR / TAF 
METAR KSEA 300653Z 03006KT 4SM -RA BR FEW015 BKN033 OVC045 09/07 A3017 RMK AO2 RAB05 SLP223 P0003 T00940072 $

TAF KSEA 300520Z 3006/3112 01009KT P6SM OVC035 TEMPO 3006/3009 -SHRA FM301200 14005KT P6SM BKN030 FM301900 28006KT P6SM BKN070 FM302200 31008KT P6SM SCT070 BKN250

flight Live Traffic

flight_takeoff 326 Departures
flight_land 319 Arrivals

Arrival

IAD KIAD VFR

Washington Dulles International Airport

Dulles, US

Local time
03:18 EDT
Timezone
America/New_York
Type
Large Airport
Elevation
312 ft
Coordinates
38.9445, -77.4558

cloud Weather

Wind
0° / 0 kt
Visibility
10 SM
Ceiling
FEW 25,000 ft
Temp / Dew
13°C / 11°C
Altimeter
29.81 inHg

Obs: 2026-05-30T06:52:00.000Z

Raw METAR / TAF 
METAR KIAD 300652Z 00000KT 10SM FEW250 13/11 A2981 RMK AO2 SLP093 T01330106

TAF KIAD 300538Z 3006/3112 00000KT P6SM FEW250 FM300800 33007G15KT P6SM FEW250 FM301200 36011G21KT P6SM SKC FM302300 01011KT P6SM SKC FM310100 02006KT P6SM SKC FM310700 35003KT P6SM SKC

flight Live Traffic

flight_takeoff 42 Departures
flight_land 51 Arrivals

Recent history last 30

DateAircraftRouteTakeoffLandingDurationDep ΔArr Δ
2026-05-29 A2BC5A IAD → BOS May 29, 21:35 UTCMay 29, 22:45 UTC1h 10m - -
2026-05-29 A123BF IAD → BOS May 29, 15:20 UTCMay 29, 20:00 UTC4h 40m - -
2026-05-28 A12B09 IAD → BOS May 28, 22:25 UTCMay 28, 23:25 UTC1h 0m - -
2026-05-28 A441EF IAD → BOS May 28, 15:15 UTCMay 28, 19:45 UTC4h 30m - -
2026-05-27 A12F6D IAD → BOS May 27, 21:45 UTCMay 27, 22:50 UTC1h 5m - -
2026-05-27 A12F6D IAD → BOS May 27, 21:49 UTCMay 27, 22:51 UTC1h 2m +24m +14m
2026-05-27 A12731 IAD → BOS May 27, 15:20 UTCMay 27, 20:20 UTC5h 0m - -
2026-05-26 A44962 IAD → BOS May 26, 22:20 UTCMay 26, 23:29 UTC1h 10m - -
2026-05-26 A5CC19 IAD → BOS May 26, 15:09 UTCMay 26, 19:50 UTC4h 40m - -
2026-05-25 A12A7D IAD → BOS May 25, 21:49 UTCMay 25, 22:52 UTC1h 3m +24m +11m
2026-05-25 A12A7D IAD → BOS May 25, 21:40 UTCMay 25, 22:49 UTC1h 10m - -
2026-05-25 A127BB IAD → BOS May 25, 15:10 UTCMay 25, 19:40 UTC4h 30m - -
2026-05-23 A12A7F IAD → BOS May 23, 21:45 UTCMay 23, 22:45 UTC1h 0m - -
2026-05-23 A2B130 IAD → BOS May 23, 15:25 UTCMay 23, 19:55 UTC4h 30m - -
2026-05-22 A4495B IAD → BOS May 22, 21:55 UTCMay 22, 22:55 UTC1h 0m - -
2026-05-22 A1242D IAD → BOS May 22, 15:35 UTCMay 22, 20:10 UTC4h 35m - -
2026-05-21 A12B0A IAD → BOS May 21, 21:50 UTCMay 21, 22:50 UTC1h 0m - -
2026-05-21 A54299 IAD → BOS May 21, 15:15 UTCMay 21, 19:40 UTC4h 25m - -
2026-05-21 AA2BC2 IAD → BOS May 21, 08:09 UTCMay 21, 08:54 UTC45m -411m +4m
2026-05-21 AA2BC2 IAD → BOS May 21, 07:45 UTCMay 21, 08:50 UTC1h 5m - -
2026-05-20 A9249C IAD → BOS May 20, 15:35 UTCMay 20, 19:40 UTC4h 5m - -
2026-05-20 AB0ED6 IAD → BOS May 20, 00:50 UTCMay 20, 02:05 UTC1h 15m - -
2026-05-19 A94B0A IAD → BOS May 19, 15:25 UTCMay 19, 19:20 UTC3h 55m - -
2026-05-18 A923CF IAD → BOS May 18, 21:34 UTCMay 18, 22:26 UTC52m +24m +15m
2026-05-18 A923CF IAD → BOS May 18, 21:25 UTCMay 18, 22:25 UTC1h 0m - -
2026-05-18 A923CF IAD → BOS May 18, 15:30 UTCMay 18, 19:35 UTC4h 4m - -
2026-05-17 A94B4D IAD → BOS May 17, 21:35 UTCMay 17, 22:45 UTC1h 10m - -
2026-05-17 A83781 IAD → BOS May 17, 15:40 UTCMay 17, 19:45 UTC4h 5m - -
2026-05-16 A94B48 IAD → BOS May 16, 21:40 UTCMay 16, 22:50 UTC1h 10m - -
2026-05-16 A94B51 IAD → BOS May 16, 15:16 UTCMay 16, 19:30 UTC4h 15m - -

Performance history

Flights tracked
111 showing last 30
Avg arrival delay
+11m
On-time arrival
100% 100% on time
Aircraft used
25

Monthly activity 2 months

Month Flights tracked
May 2026 64
April 2026 47

UAL688 frequently asked

Where does flight UAL688 fly?
UAL688 (UAL) flies from SEA to IAD. View the full route page.
How long is flight UAL688?
Based on observed flights, UAL688 takes on average 2h 30m from takeoff to landing.
How often does UAL688 fly?
UAL688 has been observed flying several times a week in our tracking data. We've recorded 111 flights under this callsign.
Is flight UAL688 usually on time?
Across recent flights, UAL688 arrives with an average 11-minute delay. 100% of flights arrive within 15 minutes of schedule.
What aircraft operates flight UAL688?
UAL688 has been operated by 25 different aircraft in our records. Tail numbers are listed in the recent history below.
Can I track UAL688 live?
Yes. When UAL688 is currently airborne, the live tracker map above shows its real-time position from ADS-B broadcasts. If the map is empty, the flight is not currently in the air.