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Route · LAX → MDW · 2020–2025 BTS data

Los Angeles to Chicago

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), LAX to MDW (Los Angeles to Chicago) ranks #1569 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

83.2%
On-time
+4.2 pts
vs US avg
53 min
Delay when late
7,897
Flights
#1569 of 4927
Corpus placement

Cancelled

0.5%

Best Month

Apr 2025 95%

Worst Month

Jul 2024 66%

Distance

1,750 mi

Carriers

1

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 115 23 0 1 WN
Nov 2025 106 20 2 1 WN
Oct 2025 119 26 0 0 WN
Sep 2025 116 12 0 0 WN
Aug 2025 121 21 1 2 WN
Jul 2025 146 28 0 1 WN
Jun 2025 137 22 0 0 WN
May 2025 114 14 0 0 WN
Apr 2025 110 5 1 3 WN
Mar 2025 105 10 1 1 WN
Feb 2025 83 4 0 0 WN
Jan 2025 95 12 0 0 WN
Dec 2024 106 13 0 0 WN
Nov 2024 104 8 0 1 WN
Oct 2024 119 16 0 0 WN
Sep 2024 119 14 0 0 WN
Aug 2024 125 18 0 1 WN
Jul 2024 146 50 0 2 WN
Jun 2024 138 36 0 2 WN
May 2024 128 37 1 0 WN
Apr 2024 125 19 0 0 WN
Mar 2024 119 21 1 1 WN
Feb 2024 79 11 0 0 WN
Jan 2024 93 21 8 1 WN

LAX–MDW seasonal on-time pattern

Best: February (90.8%) · weakest: June (74.8%)

70%75%80%85%90%95% JanFebMarAprMayJunJulAugSepOctNovDec 81%

Strongest calendar month

February

90.8% on-time · ~87 flights/mo

Busiest calendar month

July

~133 flights/mo avg

Weakest calendar month

June

74.8% on-time · ~122 flights/mo

Cancellation Rate

0.5%

15 of 2,768 flights

Diversion Rate

0.6%

17 of 2,768 flights

Explore origin & destination

On-time and delay data for the airports this route connects.

LAX - Los Angeles

Full on-time, delay-cause, and seasonal performance for Los Angeles, CA.

LAX on-time profile

MDW - Chicago

Full on-time, delay-cause, and seasonal performance for Chicago, IL.

MDW on-time profile

Compare the two airports

See LAX and MDW side by side on delays, cancellations, and reliability.

Compare LAX vs MDW

Origin-hub reliability standing

Mid-pack among LAX departures

From LAX, this corridor sits with 39 other 75–85% on-time routes out of 80 tracked departures, not the hub's reliability leaders (40 at ≥85%) and not the softest ( 1 below 75%). Destination: Chicago · fleet on-time rank #1875 of 4927.

What the Data Says About LAX to MDW

Bureau of Transportation Statistics records show Los Angeles to Chicago (LAX to MDW) running a 83.2% on-time rate over 7,897 tracked flights, on the stronger end of a typical domestic pairing. When flights do run late, the average delay is 53.2 minutes. The 1,750-mile corridor is served by 1 carrier, and over the last 24 months 0.5% of 2,768 flights were cancelled, 0.6% diverted.

The monthly split is wide on this route: Apr 2025 posted the strongest performance at 95% on-time, while Jul 2024 came in at just 66% - a 30-point swing worth factoring into travel timing.

On the multi-year calendar, LAX–MDW peaks in February at 90.8% on-time while July carries the heaviest traffic (~133 flights per month) ; the softest month is June at 74.8%, a 16.0-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does LAX to MDW rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, LAX to MDW ranks #1569 of 4927 tracked domestic routes by total flights (most flights = #1). That ordinal matches our busiest-routes listing (total_flights DESC). See /methodology#corpus-placement for the exact sort basis.
How often are flights delayed from LAX to MDW? ▼
Flights from Los Angeles to Chicago have a 83.2% on-time rate based on 7,897 flights. The average delay is 53.2 minutes. The best recent month was Apr 2025 with 95% on-time.
What is the cancellation rate for LAX to MDW? ▼
Over the last 24 months, 0.5% of flights on this route were cancelled (15 of 2,768 flights) and 0.6% were diverted.
How far is the flight from LAX to MDW? ▼
The flight distance from Los Angeles (LAX) to Chicago (MDW) is approximately 1,750 miles. This route is served by 1 carrier.
When is the best time to fly from LAX to MDW? ▼
The best recent month for on-time performance was Apr 2025 (95% on-time). The worst was Jul 2024 (66% on-time). Consider booking during months with historically better performance.

Airports on this route

LAX Airport

Los Angeles
MDW Airport

Chicago
Data source

Data Source: Bureau of Transportation Statistics (BTS), On-Time Performance Data. Statistics reflect cumulative performance across all available reporting periods.

Read our methodology - how this data is sourced, computed, and verified.

Using LAX–MDW data

LAX–MDW runs 4.2 pts above the national 79% average; the remaining risk is month-to-month swing and carrier mix, not a weak headline rate.

  • Compare LAX and MDW airport profiles: delay causes and top routes differ even on the same corridor. LAX airport
  • If your dates flex, February (90.8% on-time) beats June (74.8%) on this corridor. Seasonal chart
  • 4 other routes post a similar 83.2% on-time rate; compare before you commit to this pairing. Similar routes

On-time rate reflects the BTS historical average across all reporting carriers on this origin–destination pair, not any single flight or booking recommendation.

Data sourced from U.S. Department of Transportation Bureau of Transportation Statistics (BTS) On-Time Performance data. See our methodology for details. Retrieved and formatted by PlainFlights

Every figure on PlainFlights is rendered directly from BTS On-Time Performance data, no number is typed in by an editor. This page aggregates this specific route's on-time performance and monthly trend, live from the dataset. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.