Is a 30-Minute Layover Enough at IAD?
Washington Dulles International — Washington
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High Risk — 49% miss rate
Probably not — a 30 minutes layover at IAD means roughly a 49% chance of missing your flight.
49%
Miss Rate
82%
On-Time Rate
74m
Avg Delay
Why 30 Minutes Is High Risk at IAD
A 30-minute connection at IAD is very risky. There's roughly a 49% chance you'll miss your connecting flight. We strongly recommend at least 141 minutes, or consider booking a direct flight.
+Airport reliability: IAD has a 82% on-time rate — above average
−Below minimum connection time: IAD requires at least 60 minutes for domestic connections. You have 30.
−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 30-minute layover is 30 minutes below the domestic minimum. Even without any delays, you may not have enough time to reach your gate.
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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