BWI to SLC flight delays & on-time performance
Nonstop flights from Baltimore/Washington International Thurgood Marshall Airport to Salt Lake City International Airport · 1,865 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BWI or SLC 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 Salt Lake City (SLC) arrived on time 77% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.6% were cancelled, and 7% arrived an hour or more late.
- Delta Air Lines was the most punctual airline here (81% on time); Southwest Airlines was the least (74%).
- Departures scheduled around 8am did best (92% on time); around 8pm did worst (58%).
- Tuesday was the most reliable day to fly (87% on time) and Saturday the least (72%).
- The largest source of delay minutes was airline (crew, maintenance, cleaning, fueling) (51%).
Which airline is most on time from BWI to SLC?
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 |
|---|---|---|---|---|---|
| Delta Air Lines | 81% | 1.7% | 13 min | 5.4% | 360 |
| Southwest Airlines | 74% | 1.5% | 16 min | 8.7% | 409 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am81%369 flights
- 8am92%50 flights
- 9am71%57 flights
- 10am88%42 flights
- 11am73%15 flights
- 12pm63%32 flights
- 1pm81%53 flights
- 2pm84%31 flights
- 6pm58%61 flights
- 7pm67%12 flights
- 8pm58%34 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday82%3.7% cancelled
- Tuesday87%1.0% cancelled
- Wednesday76%0.0% cancelled
- Thursday79%0.0% cancelled
- Friday72%0.0% cancelled
- Saturday72%0.8% cancelled
- Sunday74%5.5% cancelled
On-time trend by month
Why flights are late
Share of delay minutes by cause, as reported by airlines to the DOT.
- Airline (crew, maintenance, cleaning, fueling)51%
- Late-arriving aircraft25%
- Air traffic control & airport congestion20%
- Extreme weather3%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather58%
- Airline (crew, maintenance, cleaning, fueling)42%
- Air traffic control & airport congestion0%
- Security0%
BWI to SLC: common questions
- How often are BWI to SLC flights on time?
- 77% 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 Salt Lake City cancelled?
- 1.6% of scheduled flights were cancelled (12 of 769).
- How long are typical delays?
- Across all flights the average arrival delay was 15 min (early arrivals count as zero). Flights that were late arrived 58 min behind schedule on average, and 7.1% of flights were an hour or more late.
- How long is taxi time at BWI?
- Flights on this route spent 15 min taxiing from the gate to takeoff on average.
Related routes
Return trip: SLC to BWI — 81% 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 → SLC, nonstop flights by US airlines that report to the DOT. How we calculate this.