Chicago (MDW) to Ontario (ONT)
Flight time
≈ 4h 12m
Bearing
262° W
Chicago (MDW) to Ontario (ONT) is 1,702 miles (2,740 km) as the crow flies — the great-circle baseline most distance-based mileage programs credit.
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What actually flies MDW–ONT
Filed traffic dataIn July 2026, Southwest Airlines was the only carrier flying nonstop MDW–ONT; the Boeing 737 MAX 8 was the most common aircraft at 67% of departures; flights ran 87% full.
Departures
63
July 2026
Seats
11,025
both directions
Passengers
9,583
both directions
Load factor
86.9%
RPM ÷ ASM
Who flies MDW–ONT?
Southwest Airlines was the only carrier to fly nonstop MDW–ONT in July 2026 (63 departures).
- WN
63 departures · 11,025 seats
Share of departures100.0%86.9%
Load
What plane flies MDW–ONT?
In July 2026, the Boeing 737 MAX 8 flew 67% of MDW–ONT departures — more than any other aircraft type.
- Boeing 737 MAX 8
42 departures · 86.4% load
66.7% - Boeing 737-800
21 departures · 87.9% load
33.3%
How has MDW–ONT traffic changed?
Nonstop MDW–ONT departures rose from 60 in August 2025 to 63 in July 2026.
Monthly nonstop MDW–ONT traffic, trailing 12 months through July 2026. Bars scale to the busiest month; months with no filed service show as zero.
August 2025
60 departures · 7,386 passengers
80.1%
Load
September 2025
61 departures · 7,184 passengers
77.5%
Load
October 2025
62 departures · 8,382 passengers
79.4%
Load
November 2025
57 departures · 6,959 passengers
70.7%
Load
December 2025
62 departures · 8,110 passengers
76.8%
Load
January 2026
55 departures · 5,926 passengers
71.2%
Load
February 2026
55 departures · 5,998 passengers
65.7%
Load
March 2026
61 departures · 7,052 passengers
66.5%
Load
April 2026
59 departures · 6,753 passengers
65.4%
Load
May 2026
63 departures · 7,304 passengers
66.3%
Load
June 2026
60 departures · 9,676 passengers
92.2%
Load
July 2026
63 departures · 9,583 passengers
86.9%
Load
By direction
Each direction is filed separately — they rarely match.
MDW → ONT
88.5% full
32 departures · 4,956 passengers
ONT → MDW
85.3% full
31 departures · 4,627 passengers
Nonstop MDW–ONT 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 Ontario (ONT)?
MDW to ONT is 1,702 miles (2,740 km / 1,479 nautical miles) measured great-circle — the shortest path over the surface of the Earth.
How long is the flight from MDW to ONT?
A nonstop covers the 1,702-mile great-circle distance in roughly 4h 12m of block time, before winds. Actual schedules vary a few percent by direction and aircraft.
What plane flies MDW–ONT?
In July 2026, the Boeing 737 MAX 8 flew the largest share of departures (66.7%), followed by the Boeing 737-800 (33.3%).
What mileage do I earn flying MDW–ONT?
Distance-based programs credit off the 1,702-mile great-circle figure, then apply your fare-class earning rate. Revenue-based programs credit off the fare instead.
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