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Tell FlyerIntel where and when you are flying. It will show how that route actually performs at that time of day and on that day of the week, what both airports are doing right now, and when to get to the airport.
IAD → BOS
Washington to Boston · departing 11:30 AM
IAD → BOS flights departing 9 AM–12 PM arrive on time 90.3% of the time, against 77.5% across the whole day — your departure window is 12.8 points better than average for this route.
Other times on IAD → BOS
Time of day
- 5–9 AM91.8%
- 9 AM–12 PM90.3%
- 12–3 PM80.7%
- 3–6 PM61.8%
- 6–9 PMToo few flights to score
- 9 PM–5 AM77.8%
Day of week
- Monday75.0%
- Tuesday81.0%
- Wednesday78.2%
- Thursday73.2%
- Friday77.4%
- Saturday82.8%
- Sunday75.1%
Bars start below the lowest figure so a real gap is visible; read the percentage, not the bar length. A time with too few flights to score is left unscored rather than guessed at.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · History describes what has happened on this route. It is not a prediction about your flight. Full route profile →
Which flight
Flights on IAD → BOS, the ones scheduled closest to 11:30 AM first.
Source: FlyerIntel analysis of US DOT BTS data · July 2023 – July 2026 · “Usually departs” is the scheduled time each flight number most often had over the period; airlines retime flights, so confirm the time on your booking. Flight numbers with fewer than 90 operations on this route are left out. This is history, not a forecast for your flight.
When to get to the airport
A starting point for IAD, not a promise about your day.
1h 45m before your 11:30 AM departure
How this was worked out
- FlyerIntel cannot currently obtain live security wait times for IAD, so this figure does not account for the queue on the day.
- It does not include your journey to the airport, parking, or a shuttle from a remote lot.
- International departures, and travel with children, checked pets or special assistance, need more time.
Both airports right now
Aviation weather is not currently a factor.
Minimal operational impact. Conditions are not a notable factor for operations right now.
UpdatedThe National Weather Service has issued a high wind warning covering the airport.
Low operational impact. Conditions are slightly below ideal but rarely disruptive on their own.
- Visibility 3 statute miles.
Source: NOAA Aviation Weather Center · Conditions describe the airfield, not your flight, and change quickly.
Other ways to make this journey
Airport pairings serving Washington to Boston.