BWI to TYS flight delays & on-time performance
Nonstop flights from Baltimore/Washington International Thurgood Marshall Airport to McGhee Tyson Airport · 464 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BWI or TYS right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Baltimore (BWI) to Knoxville (TYS) arrived on time 62% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 2.7% were cancelled, and 19% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 7pm did best (63% on time); around 8pm did worst (57%).
- Monday was the most reliable day to fly (80% on time) and Saturday the least (52%).
- The largest source of delay minutes was late-arriving aircraft (59%).
Which airline is most on time from BWI to TYS?
Ranked by on-time arrival rate. Regional airlines fly under their partner's brand (e.g. SkyWest for Delta Connection or United Express).
| Airline | On time | Cancelled | Avg delay | 1 hr+ late | Flights |
|---|---|---|---|---|---|
| Southwest Airlines | 62% | 2.7% | 32 min | 18.6% | 149 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7pm63%74 flights
- 8pm57%66 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday80%4.8% cancelled
- Tuesday65%4.8% cancelled
- Wednesday52%0.0% cancelled
- Thursday67%4.5% cancelled
- Friday62%4.5% cancelled
- Saturday52%0.0% cancelled
- Sunday57%0.0% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Late-arriving aircraft59%
- Airline (crew, maintenance, cleaning, fueling)30%
- Extreme weather6%
- Air traffic control & airport congestion5%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Airline (crew, maintenance, cleaning, fueling)50%
- Extreme weather25%
- Air traffic control & airport congestion25%
- Security0%
BWI to TYS: common questions
- How often are BWI to TYS flights on time?
- 62% of flights arrived less than 15 minutes late in Aug 2025 – Jul 2026, compared with 78% for all US flights.
- How often are flights from Baltimore to Knoxville cancelled?
- 2.7% of scheduled flights were cancelled (4 of 149).
- How long are typical delays?
- Across all flights the average arrival delay was 32 min (early arrivals count as zero). Flights that were late arrived 81 min behind schedule on average, and 18.6% of flights were an hour or more late.
- How long is taxi time at BWI?
- Flights on this route spent 14 min taxiing from the gate to takeoff on average.
Related routes
Return trip: TYS to BWI — 93% on time
More flights from Baltimore
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BWI → TYS, nonstop flights by US airlines that report to the DOT. How we calculate this.