United Airlines
UA1424Denver to Seattle
United Airlines flight UA1424 flies from Denver (DEN) to Seattle Tacoma (SEA), 1,645 km. Over August 2025 to July 2026 it usually arrives right on schedule: 86% of 522 flights arrived within 15 minutes of schedule and 1.1% were cancelled (US Department of Transportation data).
On-time record, last 12 months
86%
on time (within 15 min)
9%
more than 30 min late
1.1%
cancelled
0 min
average arrival vs schedule
Every operation of UA1424, August 2025 to July 2026: 522 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA1424
- Denver (DEN) to Seattle Tacoma (SEA)258 flights
- Seattle Tacoma (SEA) to San Francisco (SFO)73 flights
- Fort Lauderdale Hollywood (FLL) to Denver (DEN)68 flights
- Orlando (MCO) to Denver (DEN)36 flights
- Oklahoma City (OKC) to Denver (DEN)36 flights
- San Antonio (SAT) to Denver (DEN)18 flights
- Denver (DEN) to Washington Dulles (IAD)18 flights
- San Francisco (SFO) to Baltimore (BWI)15 flights
Other flights from Denver to Seattle
More about Denver (DEN) and Seattle Tacoma (SEA).
Embed this on your site
A live badge for travel blogs, forums and trip reports. It updates as new data comes in, and links back here for the full stats.
Dark badge, HTML
<a href="https://tripstow.com/flights/ua1424" title="UA1424 is on time 86% of the time on TripStow"><img src="https://tripstow.com/badge/flights/ua1424.svg" alt="UA1424 is on time 86% of the time" width="360" height="88" loading="lazy"></a>
Light badge, HTML
<a href="https://tripstow.com/flights/ua1424" title="UA1424 is on time 86% of the time on TripStow"><img src="https://tripstow.com/badge/flights/ua1424.svg?theme=light" alt="UA1424 is on time 86% of the time" width="360" height="88" loading="lazy"></a>Markdown, for forums and README files
[](https://tripstow.com/flights/ua1424)Flying soon?
Forward your booking to TripStow and get your trip built for you, with check-in reminders, punctuality for every flight and a map of everywhere you have been.
Start free