Boston, MA → Denver, CO flight delays
BOS → DEN · all airlines · 323 flights · May 2026 · source: US BTS
This route is delayed
19%of the time, by +46 min on average when it does.
This is history, not a promise — your specific flight could well be on time.
On-time rate
81%
Delayed 3h+
0.3%
Cancelled
0.3%
Avg when late
+46m
Best & worst day to fly
Most on-time
Saturday
delayed 10%
Worst
Thursday
delayed 30%
Which airline is most punctual on BOS → DEN?
Deltadelayed 7%
Uniteddelayed 14%
JetBluedelayed 23%
Southwestdelayed 35%
Frequently asked
How often is the Boston, MA to Denver, CO flight delayed?
About 19% of BOS → DEN flights arrive late (15+ minutes), by an average of 46 minutes when they do, based on 323 flights in May 2026.
Which airline is most punctual on BOS → DEN?
Delta, delayed 7% of the time — the best of the 4 airlines flying this route.
What is the best day to fly BOS → DEN?
Saturday is the most on-time (delayed 10%), while Thursday is the worst (delayed 30%).
Airport overviews