COS to MDW flight delays & on-time performance
Nonstop flights from City of Colorado Springs Municipal Airport to Chicago Midway International Airport · 917 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at COS or MDW right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Colorado Springs (COS) to Chicago (MDW) arrived on time 75% of the time in Aug 2025 – Jul 2026, worse than the 78% national average.
- 1.1% were cancelled, and 6% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 9am did best (85% on time); around 2pm did worst (54%).
- Saturday was the most reliable day to fly (96% on time) and Thursday the least (58%).
- The largest source of delay minutes was late-arriving aircraft (62%).
Which airline is most on time from COS to MDW?
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 | 75% | 1.1% | 13 min | 6.0% | 189 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 8am100%14 flights
- 9am85%41 flights
- 11am84%34 flights
- 12pm63%17 flights
- 2pm54%39 flights
- 3pm72%32 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday74%0.0% cancelled
- Tuesday79%0.0% cancelled
- Wednesday70%4.5% cancelled
- Thursday58%0.0% cancelled
- Friday69%0.0% cancelled
- Saturday96%3.7% cancelled
- Sunday77%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 aircraft62%
- Airline (crew, maintenance, cleaning, fueling)28%
- Air traffic control & airport congestion10%
- Extreme weather1%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
- Extreme weather100%
- Airline (crew, maintenance, cleaning, fueling)0%
- Air traffic control & airport congestion0%
- Security0%
COS to MDW: common questions
- How often are COS to MDW flights on time?
- 75% 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 Colorado Springs to Chicago cancelled?
- 1.1% of scheduled flights were cancelled (2 of 189).
- How long are typical delays?
- Across all flights the average arrival delay was 13 min (early arrivals count as zero). Flights that were late arrived 46 min behind schedule on average, and 6.0% of flights were an hour or more late.
- How long is taxi time at COS?
- Flights on this route spent 13 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MDW to COS — 73% on time
More flights from Colorado Springs
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: COS → MDW, nonstop flights by US airlines that report to the DOT. How we calculate this.