BOI to MDW flight delays & on-time performance
Nonstop flights from Boise Air Terminal/Gowen Field to Chicago Midway International Airport · 1,448 miles · Aug 2025 – Jul 2026
No FAA-reported ground stops or delays at BOI or MDW right now. Individual flights can still be delayed by the airline; check with your airline for your flight.
Key facts
- Flights from Boise (BOI) to Chicago (MDW) arrived on time 87% of the time in Aug 2025 – Jul 2026, better than the 78% national average.
- 0% were cancelled, and 4% arrived an hour or more late.
- Southwest Airlines is the only airline reporting nonstop flights on this route.
- Departures scheduled around 7am did best (100% on time); around 1pm did worst (74%).
- Friday was the most reliable day to fly (94% on time) and Sunday the least (65%).
- The largest source of delay minutes was late-arriving aircraft (83%).
Which airline is most on time from BOI 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 | 87% | 0.0% | 8 min | 3.5% | 87 |
Best time of day to fly
On-time arrival rate by scheduled departure hour (local time).
- 7am100%16 flights
- 8am100%26 flights
- 1pm74%32 flights
Best day of the week
On-time arrival rate by day of departure.
- Monday93%0.0% cancelled
- Tuesday100%0.0% cancelled
- Wednesday100%0.0% cancelled
- Thursday89%0.0% cancelled
- Friday94%0.0% cancelled
- Saturday0%0.0% cancelled
- Sunday65%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 aircraft83%
- Airline (crew, maintenance, cleaning, fueling)13%
- Air traffic control & airport congestion5%
- Extreme weather0%
- Security0%
Why flights are cancelled
Share of cancellations by reason.
No cancellation causes recorded in this period.
BOI to MDW: common questions
- How often are BOI to MDW flights on time?
- 87% 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 Boise to Chicago cancelled?
- 0.0% of scheduled flights were cancelled (0 of 87).
- How long are typical delays?
- Across all flights the average arrival delay was 8 min (early arrivals count as zero). Flights that were late arrived 48 min behind schedule on average, and 3.5% of flights were an hour or more late.
- How long is taxi time at BOI?
- Flights on this route spent 12 min taxiing from the gate to takeoff on average.
Related routes
Return trip: MDW to BOI — 71% on time
More flights from Boise
Data: U.S. DOT Bureau of Transportation Statistics, Aug 2025 – Jul 2026 (12 months). Latest month published by BTS: July 2026. Route: BOI → MDW, nonstop flights by US airlines that report to the DOT. How we calculate this.