Chicago (MDW) to San Antonio (SAT)
Flight time
≈ 2h 52m
Bearing
219° SW
Chicago (MDW) to San Antonio (SAT) is 1,037 miles (1,668 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies MDW–SAT
Filed traffic dataIn July 2026, Southwest Airlines was the only carrier flying nonstop MDW–SAT; the Boeing 737-800 was the most common aircraft at 40% of departures; flights ran 84% full.
Departures
122
July 2026
Seats
20,172
both directions
Passengers
17,032
both directions
Load factor
84.4%
RPM ÷ ASM
Who flies MDW–SAT?
Southwest Airlines was the only carrier to fly nonstop MDW–SAT in July 2026 (122 departures).
- WN
122 departures · 20,172 seats
Share of departures100.0%84.4%
Load
What plane flies MDW–SAT?
In July 2026, the Boeing 737-800 flew 40% of MDW–SAT departures — more than any other aircraft type.
- Boeing 737-800
49 departures · 82.6% load
40.2% - Boeing 737 MAX 8
42 departures · 82.0% load
34.4% - Boeing 737-700
31 departures · 92.3% load
25.4%
How has MDW–SAT traffic changed?
Nonstop MDW–SAT departures rose from 120 in August 2025 to 122 in July 2026.
Monthly nonstop MDW–SAT traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
120 departures · 14,627 passengers
73.5%
Load
September 2025
113 departures · 13,917 passengers
74.1%
Load
October 2025
124 departures · 16,673 passengers
78.3%
Load
November 2025
111 departures · 12,773 passengers
67.5%
Load
December 2025
120 departures · 14,578 passengers
70.9%
Load
January 2026
72 departures · 8,005 passengers
64.0%
Load
February 2026
56 departures · 6,749 passengers
69.7%
Load
March 2026
111 departures · 14,906 passengers
79.1%
Load
April 2026
119 departures · 13,851 passengers
73.4%
Load
May 2026
125 departures · 15,338 passengers
78.6%
Load
June 2026
118 departures · 15,910 passengers
81.9%
Load
July 2026
122 departures · 17,032 passengers
84.4%
Load
By direction
Each direction is filed separately — they rarely match.
MDW → SAT
81.8% full
61 departures · 7,892 passengers
SAT → MDW
86.9% full
61 departures · 9,140 passengers
Nonstop MDW–SAT traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through July 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Chicago (MDW) from San Antonio (SAT)?
MDW to SAT is 1,037 miles (1,668 km / 901 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from MDW to SAT?
A nonstop covers the 1,037-mile great-circle distance in roughly 2h 52m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies MDW–SAT?
In July 2026, the Boeing 737-800 flew the largest share of departures (40.2%), followed by the Boeing 737 MAX 8 (34.4%).
What mileage do I earn flying MDW–SAT?
Distance-based programs credit off the 1,037-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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