Route · MDW → CHS · 2020–2025 BTS data

Chicago to Charleston

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MDW to CHS (Chicago to Charleston) ranks #3300 of 4927 tracked domestic routes by total flights (most flights = #1).

Compiled by PlainFlights

Data updated 2026-06-13

78.3%
On-time: -0.7 pts
vs US avg: 57 min
Delay when late: 2,992
Flights: #3300 of 4927
Corpus placement

Cancelled

0.6%

Best Month

Apr 2024 89%

Worst Month

Jul 2023 50%

Distance

745 mi

Carriers

Monthly Performance

Recent 24 months of route data.

Period	Flights	Delayed	Cancelled	Diverted	Carriers
Oct 2025	35	5	0	0	WN
Sep 2025	34	6	0	0	WN
Aug 2025	36	8	1	0	WN
Jul 2025	39	13	2	0	WN
Jun 2025	39	11	0	0	WN
May 2025	35	9	0	0	WN
Apr 2025	35	13	0	0	WN
Mar 2025	37	5	0	0	WN
Oct 2024	35	1	0	0	WN
Sep 2024	34	6	0	0	WN
Aug 2024	36	11	1	0	WN
Jul 2024	39	13	0	1	WN
Jun 2024	40	8	0	0	WN
May 2024	58	12	0	0	WN
Apr 2024	57	6	0	0	WN
Mar 2024	57	8	0	0	WN
Feb 2024	33	0	0	0	WN
Jan 2024	35	6	0	0	WN
Dec 2023	39	11	1	0	WN
Nov 2023	36	5	0	0	WN
Oct 2023	51	16	0	0	WN
Sep 2023	54	14	0	1	WN
Aug 2023	47	14	1	2	WN
Jul 2023	60	30	0	0	WN

Strongest calendar month

February

100.0% on-time · ~33 flights/mo

Busiest calendar month

July

~62 flights/mo avg

Weakest calendar month

July

70.3% on-time · ~62 flights/mo

Cancellation Rate

0.6%

6 of 1,001 flights

Diversion Rate

0.4%

4 of 1,001 flights

Explore origin & destination

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

MDW - Chicago

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

MDW on-time profile

CHS - Charleston

Full on-time, delay-cause, and seasonal performance for Charleston, SC.

CHS on-time profile

Compare the two airports

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

Compare MDW vs CHS

Origin-hub reliability standing

Mid-pack among MDW departures

From MDW, this corridor sits with 51 other 75–85% on-time routes out of 69 tracked departures, not the hub's reliability leaders (0 at ≥85%) and not the softest ( 18 below 75%). Destination: Charleston · fleet on-time rank #3753 of 4927.

Similar routes

Other BTS-tracked routes with comparable performance or trip length to MDW–CHS.

Routes with a similar on-time rate

DEN → SLC

Denver to Salt Lake City

78.3% on-time

AUS → DFW

Austin to Dallas/Fort Worth

78.3% on-time

CLT → PHL

Charlotte to Philadelphia

78.3% on-time

LAS → JFK

Las Vegas to New York

78.3% on-time

Routes of a similar trip length

JFK → MKE

New York to Milwaukee

745 mi

MKE → JFK

Milwaukee to New York

745 mi

ATL → EWR

Atlanta to Newark

746 mi

EWR → ATL

Newark to Atlanta

746 mi

What the Data Says About MDW to CHS

The Chicago to Charleston corridor (MDW to CHS) posts a 78.3% on-time rate on the lower edge of the average band, based on 2,992 tracked flights. Late flights run 56.9 minutes behind on average. 1 carrier cover the 745-mile route; over the last 24 months, 6 of 1,001 flights were cancelled (0.6%) and 0.4% diverted.

The monthly split is wide on this route: Apr 2024 posted the strongest performance at 89% on-time, while Jul 2023 came in at just 50% - a 40-point swing worth factoring into travel timing.

On the multi-year calendar, MDW–CHS peaks in February at 100.0% on-time while July carries the heaviest traffic (~62 flights per month) ; the softest month is July at 70.3%, a 29.7-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does MDW to CHS rank among US routes by traffic? ▼

According to PlainFlights' route traffic ranking, MDW to CHS ranks #3300 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 MDW to CHS? ▼

Flights from Chicago to Charleston have a 78.3% on-time rate based on 2,992 flights. The average delay is 56.9 minutes. The best recent month was Apr 2024 with 89% on-time.

What is the cancellation rate for MDW to CHS? ▼

Over the last 24 months, 0.6% of flights on this route were cancelled (6 of 1,001 flights) and 0.4% were diverted.

How far is the flight from MDW to CHS? ▼

The flight distance from Chicago (MDW) to Charleston (CHS) is approximately 745 miles. This route is served by 1 carrier.

When is the best time to fly from MDW to CHS? ▼

The best recent month for on-time performance was Apr 2024 (89% on-time). The worst was Jul 2023 (50% on-time). Consider booking during months with historically better performance.

Airports on this route

MDW Airport

Chicago

CHS Airport

Charleston

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 MDW–CHS data

MDW–CHS is mid-pack at 78.3% on-time; month and carrier mix move more than the corridor headline.

Compare MDW and CHS airport profiles: delay causes and top routes differ even on the same corridor. MDW airport
If your dates flex, February (100.0% on-time) beats July (70.3%) on this corridor. Seasonal chart
4 other routes post a similar 78.3% 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.