Flight AA1637
American Airlines flight AA1637
Looking for AA1637 in the air…
Washington (DCA) to Chicago (ORD)
Historically, this flight arrives 15+ minutes late 29% of the time, and when it is late the delay averages 76 minutes. It was cancelled 2.2% of the time.
- On-time arrivals
- 71.3%
- Less than 15 minutes late
- Cancelled
- 2.2%
- Of scheduled flights
- Average delay when late
- 76 min
- Flights arriving 15+ minutes late
- Flights tracked
- 89
- Scheduled flights in the period
What caused the delays
- Extreme weather 38%
- Air traffic control & airport 28%
- Late-arriving aircraft 19%
- Airline (crew, maintenance, cleaning) 16%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Baltimore (BWI) to Charlotte (CLT)
Historically, this flight arrives 15+ minutes late 37% of the time, and when it is late the delay averages 138 minutes. It was cancelled 4.1% of the time.
- On-time arrivals
- 63.4%
- Less than 15 minutes late
- Cancelled
- 4.1%
- Of scheduled flights
- Average delay when late
- 138 min
- Flights arriving 15+ minutes late
- Flights tracked
- 74
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 75%
- Airline (crew, maintenance, cleaning) 16%
- Air traffic control & airport 5%
- Extreme weather 4%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Chicago (ORD) to Washington (DCA)
Historically, this flight arrives 15+ minutes late 25% of the time, and when it is late the delay averages 88 minutes. It was cancelled 9.1% of the time.
- On-time arrivals
- 75.0%
- Less than 15 minutes late
- Cancelled
- 9.1%
- Of scheduled flights
- Average delay when late
- 88 min
- Flights arriving 15+ minutes late
- Flights tracked
- 44
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 54%
- Airline (crew, maintenance, cleaning) 27%
- Extreme weather 12%
- Air traffic control & airport 6%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Phoenix (PHX) to Charlotte (CLT)
Historically, this flight arrives 15+ minutes late 19% of the time, and when it is late the delay averages 51 minutes. It was cancelled 11.1% of the time.
- On-time arrivals
- 81.2%
- Less than 15 minutes late
- Cancelled
- 11.1%
- Of scheduled flights
- Average delay when late
- 51 min
- Flights arriving 15+ minutes late
- Flights tracked
- 36
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 54%
- Air traffic control & airport 30%
- Late-arriving aircraft 16%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Dulles (IAD) to Charlotte (CLT)
Historically, this flight arrives 15+ minutes late 3% of the time, and when it is late the delay averages 245 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 96.8%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 245 min
- Flights arriving 15+ minutes late
- Flights tracked
- 31
- Scheduled flights in the period
What caused the delays
- Air traffic control & airport 100%
- Airline (crew, maintenance, cleaning) 0%
- Late-arriving aircraft 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Charlotte (CLT) to Phoenix (PHX)
Historically, this flight arrives 15+ minutes late 7% of the time, and when it is late the delay averages 54 minutes. It was cancelled 0.0% of the time.
- On-time arrivals
- 93.3%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 54 min
- Flights arriving 15+ minutes late
- Flights tracked
- 30
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 75%
- Late-arriving aircraft 25%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Philadelphia (PHL) to Dallas-Fort Worth (DFW)
Only 19 flights on record, which is too few for reliable odds.
- On-time arrivals
- 88.2%
- Less than 15 minutes late
- Cancelled
- 5.3%
- Of scheduled flights
- Average delay when late
- 47 min
- Flights arriving 15+ minutes late
- Flights tracked
- 19
- Scheduled flights in the period
What caused the delays
- Airline (crew, maintenance, cleaning) 100%
- Late-arriving aircraft 0%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Phoenix (PHX) to Dallas-Fort Worth (DFW)
Only 4 flights on record, which is too few for reliable odds.
- On-time arrivals
- 50.0%
- Less than 15 minutes late
- Cancelled
- 0.0%
- Of scheduled flights
- Average delay when late
- 54 min
- Flights arriving 15+ minutes late
- Flights tracked
- 4
- Scheduled flights in the period
What caused the delays
- Late-arriving aircraft 93%
- Airline (crew, maintenance, cleaning) 7%
- Air traffic control & airport 0%
- Extreme weather 0%
- Security 0%
Share of delay minutes airlines attributed to each cause (BTS).
Show as table
| Month | On time | Flights |
|---|---|---|
| September 2025 | 73.3% | 30 |
| October 2025 | 80.0% | 31 |
| November 2025 | 96.7% | 30 |
| December 2025 | 83.3% | 20 |
| January 2026 | 85.2% | 30 |
| February 2026 | 70.0% | 11 |
| March 2026 | 91.7% | 24 |
| April 2026 | 82.1% | 30 |
| May 2026 | 69.0% | 31 |
| June 2026 | 72.4% | 30 |
| July 2026 | 51.9% | 29 |
| August 2026 | 60.0% | 31 |
Source: U.S. DOT Bureau of Transportation Statistics on-time data, September 2025 – August 2026. Covers flights operated by reporting U.S. carriers. About our data