Is a 1-Hour Layover Enough at IAD?
Washington Dulles International — Washington
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Risky — 16% miss rate
It's risky — a 1 hour layover at IAD gives you about a 16% chance of missing your connection.
16%
Miss Rate
82%
On-Time Rate
74m
Avg Delay
Why 60 Minutes Is Risky at IAD
A 60-minute connection at IAD is risky. Based on delay patterns, roughly 16% of travelers on connections like this would miss their flight. We recommend at least 141 minutes.
+Airport reliability: IAD has a 82% on-time rate — above average
−High average delay: When flights are late at IAD, the average delay is 74 minutes
−Long taxi times: Planes at IAD typically sit on the runway for 20 minutes before takeoff
Minimum Connection Time at IAD
60m
Domestic
120m
International
Your layover exactly matches the domestic minimum. You'll make it if everything goes perfectly, but any delay on your inbound flight puts you at risk.
Terminal Transfers at IAD
How to transfer: AeroTrain automated people mover connects the main terminal to all concourses
Transfer time: 5-12 minutes between concourses via AeroTrain
✓TSA re-screening: Not required between terminals — All concourses are connected post-security via the AeroTrain. International arrivals can connect to domestic flights without re-screening.
Compare Other Layover Times at IAD
Click any row to see the full analysis for that layover time.
What to Do Instead
- →Look for itineraries with 141+ minute layovers at IAD
- →Consider a direct flight if available
- →Book both legs on the same ticket (airline must rebook you if you miss the connection)
- →Choose an early morning first leg — morning flights are delayed less often
Check a Different Layover Time
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