Chicago Midway International Airport
Chicago, United StatesMDW / KMDW
Major airport · 108 direct destinations · 4 runways · longest runway 6,522 ft
52 °F · CloudySource: METAR observation via the NOAA Aviation Weather Center
Route
Chicago → Ontario
MDW
ChicagoChicago Midway International Airport
ChicagoChicago Midway International AirportONTOntarioOntario International Airport
OntarioOntario International Airport- Distance
- 1,703 mi
- Estimated flight time
- ~3h 55m
Ontario is currently 2 hours behind Chicago.
Observed nonstop
How often does this route fly?
Frequency
Daily at most
On average around 1 flights a day, observed from October 2025 to September 2026.
- 1
- flights per day
- 1
- busiest month · Oct
- 3 hr 54 min
- measured flight time
- 12 / 12
- months seen
Through the year
Per day, month by month
- 1Jan2026
- 1Feb
- 1Mar
- 1Apr
- 1May
- 1Jun
- 1Jul
- 1Aug
- 1Sep
- 1Oct2025
- 1Nov
- 1Dec
Airlines
Who flies it
Southwest Airlinesall year
Through the day
Departure times
Local time in Chicago. Most departures between 08:00 and 11:00.
- 00:00
- 01:00
- 02:00
- 03:00
- 04:00
- 05:00
- 06:00
- 07:00
- 08:00
- 09:00
- 10:00
- 11:00
- 12:00
- 13:00
- 14:00
- 15:00
- 16:00
- 17:00
- 18:00
- 19:00
- 20:00
- 21:00
- 22:00
- 23:00
Through the week
By weekday
- 1.3Mon
- 0.9Tue
- 0.8Wed
- 0.9Thu
- 1Fri
- 0.6Sat
- 0.5Sun
Fleet
Aircraft observed
- Boeing 737 MAX 8B38M45%
- Boeing 737-800B73838%
- Boeing 737-700B73717%
- Cessna Citation LatitudeC68A1%
All the numbers in a table
| Month | Per day | Seen | Airlines |
|---|---|---|---|
| January 2026 | 1 | 27 |
|
| February 2026 | 1 | 26 |
|
| March 2026 | 1 | 26 |
|
| April 2026 | 1 | 22 |
|
| May 2026 | 1 | 23 |
|
| June 2026 | 1 | 27 |
|
| July 2026 | 1 | 32 |
|
| August 2026 | 1 | 22 |
|
| September 2026 | 1 | 23 |
|
| October 2025 | 1 | 33 |
|
| November 2025 | 1 | 27 |
|
| December 2025 | 1 | 29 |
|
Airlines observed on this route
From observed callsign routes on MDW-ONT - not a booking guarantee.
About this route
- Domestic route: both airports are in the same country.
- The opposite direction has also been observed as a direct connection.
- Direct destinations observed from Chicago: 108.
- Direct destinations observed from Ontario: 63.
The airports on this route
Ontario International Airport
Ontario, United StatesONT / KONT
Major airport · 63 direct destinations · 2 runways · longest runway 12,198 ft
82 °F · ClearSource: METAR observation via the NOAA Aviation Weather Center
Alternative airports for this journey
Same journey, a different airport nearby - with an observed direct connection.
ORD ONTChicago O'Hare International AirportChicago is about 16 mi from Chicago.View route →MDW LGBLong Beach International AirportLong Beach is about 35 mi from Ontario.View route →MDW BURHollywood Burbank/Bob Hope AirportBurbank is about 45 mi from Ontario.View route →MDW LAXLos Angeles International AirportLos Angeles is about 47 mi from Ontario.View route →
About the route from Chicago to Ontario
The observed direct connection between Chicago Midway International Airport (MDW) and Ontario International Airport (ONT) covers approximately 1,703 mi. The estimated flight time is around 3h 55m. Southwest Airlines has been observed on this connection in the available route data.
Frequently asked questions about this route
- How far is Chicago from Ontario by air?
- The great-circle distance between Chicago Midway International Airport and Ontario International Airport is approximately 1,703 mi.
- How long is the flight from Chicago to Ontario?
- Based on the distance, the estimated flight time is about 3h 55m. This is an estimate, not a schedule.
- Is there a direct connection from Chicago to Ontario?
- Yes, a direct connection between MDW and ONT has been observed in our route data.
- Which airlines have been observed on this route?
- In the available route data: Southwest Airlines.
- How often is there a flight from Chicago to Ontario?
- On average around 1 flights a day, measured over twelve months (October 2025 to September 2026) in the flight archive, with 317 observed flights. Mainly Southwest Airlines. That is an observation, not a timetable.
- What is the current time difference between Chicago and Ontario?
- Ontario is currently 2 hours behind Chicago.
Where this data comes from
The route data comes from the flight archive (ADS-B, adsb.lol): which connections actually flew over the last twelve full months and who flew them, combined with our own airport, runway, and airline datasets. It is reference data about observed routes - not a current timetable and no claim about bookability.
The frequency and aircraft on this page come from the flight archive (ADS-B, 12 months, October 2025 to September 2026), summarized per route per month. We do not see every flight, so it is a floor, not a count.
Route data updated on October 11, 2026.