United Airlines
UA2420San Francisco to Denver
United Airlines flight UA2420 flies from San Francisco (SFO) to Denver (DEN), 1,553 km. Over August 2025 to July 2026 it usually arrives right on schedule: 85% of 471 flights arrived within 15 minutes of schedule and 0.8% were cancelled (US Department of Transportation data).
On-time record, last 12 months
85%
on time (within 15 min)
8%
more than 30 min late
0.8%
cancelled
-1 min
average arrival vs schedule
Every operation of UA2420, August 2025 to July 2026: 471 flights. Source: US Bureau of Transportation Statistics, public domain.
Routes flown as UA2420
- San Francisco (SFO) to Denver (DEN)195 flights
- Cleveland Hopkins (CLE) to Fort Myers (RSW)51 flights
- Denver (DEN) to Knoxville (TYS)49 flights
- Denver (DEN) to Washington (DCA)37 flights
- New Orleans (MSY) to Chicago O'Hare (ORD)37 flights
- Denver (DEN) to Traverse City (TVC)35 flights
- Fort Myers (RSW) to Chicago O'Hare (ORD)24 flights
- Portland (PDX) to San Francisco (SFO)21 flights
- Denver (DEN) to Phoenix Sky Harbor (PHX)19 flights
- Albuquerque (ABQ) to San Francisco (SFO)2 flights
Other flights from San Francisco to Denver
More about San Francisco (SFO) and Denver (DEN).
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/ua2420" title="UA2420 is on time 85% of the time on TripStow"><img src="https://tripstow.com/badge/flights/ua2420.svg" alt="UA2420 is on time 85% of the time" width="360" height="88" loading="lazy"></a>
Light badge, HTML
<a href="https://tripstow.com/flights/ua2420" title="UA2420 is on time 85% of the time on TripStow"><img src="https://tripstow.com/badge/flights/ua2420.svg?theme=light" alt="UA2420 is on time 85% of the time" width="360" height="88" loading="lazy"></a>Markdown, for forums and README files
[](https://tripstow.com/flights/ua2420)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