Is DL400 delayed?
Service date: · Scheduled departure date (America/Los_Angeles)
Last reported
Cancelled
This update may be out of date. Check with your airline.
Update time unavailable
Departure
San Francisco
SFO
Scheduled
Sep 10
Arrival
Boston
BOS
Scheduled
Sep 10
Times shown in airport local time
Flight details
Departure · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Arrival · UTC
- Scheduled
- Estimated
- Not available
- Actual
- Not available
Recent arrivals
Dates below are arrival dates in the destination airport’s time zone. The detailed history uses service dates.
- 19 min early
SFO → BOS
- 26 min early
SFO → BOS
- 1 min late
SFO → BOS
- 9 min early
SFO → BOS
- 1 min early
SFO → BOS
Flight history and details
Aug 18, 2026 — Sep 17, 2026
- Observed arrivals
- 9
- Arrivals over 15 minutes late
- 0
- Observed cancellations
- 1
- Observed occurrences
- 28
Results compare scheduled and actual arrival times. Cancelled or diverted flights are excluded. Some flights may be missing from the history.
| Service date | Departure | Arrival | Actual | Arrival delay (minutes) |
|---|---|---|---|---|
| Sep 16, 2026Arrived | San Francisco | Boston | -19 | |
| Sep 15, 2026Arrived | San Francisco | Boston | -26 | |
| Sep 11, 2026Arrived | San Francisco | Boston | 1 | |
| Sep 10, 2026Cancelled | San Francisco | Boston | Not available | Not available |
| Sep 9, 2026Arrived | San Francisco | Boston | -9 | |
| Sep 7, 2026Arrived | San Francisco | Boston | -1 | |
| Sep 6, 2026Arrived | San Francisco | Boston | -40 | |
| Sep 5, 2026Arrived | San Francisco | Boston | -23 | |
| Sep 4, 2026Arrived | San Francisco | Boston | -13 | |
| Sep 2, 2026Arrived | San Francisco | Boston | -39 |