PlainFlights

Route · MDW → PHX · 2020–2025 BTS data

Chicago to Phoenix

According to PlainFlights' route traffic ranking (BTS On-Time Performance total flights), MDW to PHX (Chicago to Phoenix) ranks #516 of 4927 tracked domestic routes by total flights (most flights = #1).

Data updated 2026-06-13

78%
On-time
-1 pts
vs US avg
58 min
Delay when late
16,525
Flights
#516 of 4927
Corpus placement

Cancelled

1.1%

Best Month

Sep 2025 91%

Worst Month

May 2024 62%

Distance

1,444 mi

Carriers

3

Monthly Performance

Recent 24 months of route data.

Period Flights Delayed Cancelled Diverted Carriers
Dec 2025 242 80 2 0 WN,F9
Nov 2025 224 49 13 0 F9,WN
Oct 2025 265 66 0 1 WN,F9
Sep 2025 205 19 2 3 WN,F9
Aug 2025 213 33 3 1 WN,F9
Jul 2025 252 76 3 0 WN,F9
Jun 2025 241 61 7 1 WN,F9
May 2025 243 47 1 0 WN,F9
Apr 2025 271 58 1 0 F9,WN
Mar 2025 285 55 3 2 WN,F9
Feb 2025 194 35 2 0 WN,F9
Jan 2025 211 28 1 0 WN,F9
Dec 2024 244 32 0 1 F9,WN
Nov 2024 230 35 0 0 WN,F9
Oct 2024 280 43 0 0 WN,F9
Sep 2024 255 44 1 0 WN,F9
Aug 2024 250 51 1 1 F9,WN
Jul 2024 271 84 2 2 F9,WN
Jun 2024 263 93 1 0 F9,WN
May 2024 299 114 5 0 F9,WN
Apr 2024 303 75 0 0 F9,WN
Mar 2024 293 56 1 0 F9,WN
Feb 2024 198 27 0 1 F9,WN
Jan 2024 225 47 19 0 F9,WN

MDW–PHX seasonal on-time pattern

Best: September (84.4%) · weakest: July (69.0%)

65%70%75%80%85%90% JanFebMarAprMayJunJulAugSepOctNovDec 77.2%

Strongest calendar month

September

84.4% on-time · ~224 flights/mo

Busiest calendar month

March

~260 flights/mo avg

Weakest calendar month

July

69.0% on-time · ~245 flights/mo

Cancellation Rate

1.1%

68 of 5,957 flights

Diversion Rate

0.2%

13 of 5,957 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

PHX - Phoenix

Full on-time, delay-cause, and seasonal performance for Phoenix, AZ.

PHX on-time profile

Compare the two airports

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

Compare MDW vs PHX

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: Phoenix · fleet on-time rank #3843 of 4927.

What the Data Says About MDW to PHX

The Chicago to Phoenix corridor (MDW to PHX) posts a 78% on-time rate on the lower edge of the average band, based on 16,525 tracked flights. Late flights run 58.2 minutes behind on average. 3 carriers cover the 1,444-mile route; over the last 24 months, 68 of 5,957 flights were cancelled (1.1%) and 0.2% diverted.

The monthly split is wide on this route: Sep 2025 posted the strongest performance at 91% on-time, while May 2024 came in at just 62% - a 29-point swing worth factoring into travel timing.

On the multi-year calendar, MDW–PHX peaks in September at 84.4% on-time while March carries the heaviest traffic (~260 flights per month) ; the softest month is July at 69.0%, a 15.4-point swing that repeats because the corridor's weather and holiday mix stays stable year to year.

Frequently Asked Questions

Where does MDW to PHX rank among US routes by traffic? ▼
According to PlainFlights' route traffic ranking, MDW to PHX ranks #516 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 PHX? ▼
Flights from Chicago to Phoenix have a 78% on-time rate based on 16,525 flights. The average delay is 58.2 minutes. The best recent month was Sep 2025 with 91% on-time.
What is the cancellation rate for MDW to PHX? ▼
Over the last 24 months, 1.1% of flights on this route were cancelled (68 of 5,957 flights) and 0.2% were diverted.
How far is the flight from MDW to PHX? ▼
The flight distance from Chicago (MDW) to Phoenix (PHX) is approximately 1,444 miles. This route is served by 3 carriers.
When is the best time to fly from MDW to PHX? ▼
The best recent month for on-time performance was Sep 2025 (91% on-time). The worst was May 2024 (62% on-time). Consider booking during months with historically better performance.

Airports on this route

MDW Airport

Chicago
PHX Airport

Phoenix
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–PHX data

MDW–PHX is mid-pack at 78% on-time; month and carrier mix move more than the corridor headline.

  • Compare MDW and PHX airport profiles: delay causes and top routes differ even on the same corridor. MDW airport
  • If your dates flex, September (84.4% on-time) beats July (69.0%) on this corridor. Seasonal chart
  • 4 other routes post a similar 78% 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.