Houston (IAH) to Chicago (MDW)
Flight time
≈ 2h 38m
Bearing
25° NE
Houston (IAH) to Chicago (MDW) is 918 miles (1,478 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies IAH–MDW
Filed traffic dataIn June 2026, United Airlines was the only carrier flying nonstop IAH–MDW; the Boeing 737-900ER was the most common aircraft at 100% of departures; flights ran 37% full.
Departures
1
June 2026
Seats
179
both directions
Passengers
67
both directions
Load factor
37.4%
RPM ÷ ASM
Who flies IAH–MDW?
United Airlines was the only carrier to fly nonstop IAH–MDW in June 2026 (1 departures).
- UA
1 departures · 179 seats
Share of departures100.0%37.4%
Load
What plane flies IAH–MDW?
In June 2026, the Boeing 737-900ER flew 100% of IAH–MDW departures.
- Boeing 737-900ER
1 departures · 37.4% load
100.0%
How has IAH–MDW traffic changed?
Nonstop IAH–MDW departures fell from 26 in August 2025 to 1 in June 2026.
Monthly nonstop IAH–MDW traffic, trailing 12 months through June 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
26 departures · 3,116 passengers
64.4%
Load
September 2025
34 departures · 4,184 passengers
66.3%
Load
October 2025
42 departures · 6,051 passengers
77.5%
Load
November 2025
46 departures · 6,296 passengers
73.6%
Load
December 2025
26 departures · 4,131 passengers
85.4%
Load
January 2026
8 departures · 1,370 passengers
92.1%
Load
February 2026
14 departures · 2,211 passengers
84.9%
Load
March 2026
19 departures · 2,956 passengers
83.8%
Load
April 2026
8 departures · 1,204 passengers
80.9%
Load
May 2026
1 departures · 70 passengers
92.1%
Load
June 2026
1 departures · 67 passengers
37.4%
Load
Nonstop IAH–MDW traffic has been filed since 2025.
Source: US DOT BTS Form 41 T-100 Segment (All Carriers). Data through June 2026; filings from 2025. Public domain (US Government work).
The airports
Frequently asked
How far is Houston (IAH) from Chicago (MDW)?
IAH to MDW is 918 miles (1,478 km / 798 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from IAH to MDW?
A nonstop covers the 918-mile great-circle distance in roughly 2h 38m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies IAH–MDW?
In June 2026, the Boeing 737-900ER flew the largest share of departures (100.0%).
What mileage do I earn flying IAH–MDW?
Distance-based programs credit off the 918-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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