Phoenix to Chicago (PHX–ORD) — Airlines, Schedules & Connections

PHX Airport Page →
1,437 mi airlines 399/wk
On-time Some delays Frequent delays
Flight Schedule 109 flights Verified 2h ago
Nonstop 1-Stop 2-Stop Hide separate tickets Hide overnight
  Flight Airline AC Dep Arr Dur OTP Sched  
EI7456
EI Aer Lingus
738
5:05 AM
MST T4
10:36 AM
CDT
3h 31m
M T W T F S S
Prices
AA1105
AA American
738
5:05 AM
MST T4
10:36 AM
CDT
3h 31m
M T W T F S S
Prices
AA2201
AA American
738
5:05 AM
MST T4
10:40 AM
CDT
3h 35m
M T W T F S S
Prices
EI7457
EI Aer Lingus
738
6:00 AM
MST T4
11:32 AM
CDT
3h 32m
M T W T F S S
Prices
CX7566
CX Cathay Pacific
738
6:00 AM
MST T4
11:32 AM
CDT
3h 32m
M T W T F S S
Prices
AA1114
AA American
738
6:00 AM
MST T4
11:37 AM
CDT
3h 37m
M T W T F S S
Prices
AA1932
AA American
738
6:00 AM
MST T4
11:32 AM
CDT
3h 32m
M T W T F S S
Prices
BA4958
BA British
738
6:05 AM
MST T4
10:36 AM
CDT
3h 31m
M T W T F S S
Prices
AC3334
AC Air Canada
32Q
6:15 AM
MST T3
11:44 AM
CDT
3h 29m
M T W T F S S
Prices
UA1194
UA United
A21N
6:15 AM
MST T3
11:44 AM
CDT
3h 29m
M T W T F S S
Prices
BA5462
BA British
738
7:00 AM
MST T4
11:32 AM
CDT
3h 32m
M T W T F S S
Prices
AC3720
AC Air Canada
32Q
7:00 AM
MST T3
11:29 AM
CDT
3h 29m
M T W T F S S
Prices
UA356
UA United
739
7:26 AM
MST T3
12:54 PM
CDT
3h 28m
M T W T F S S
Prices
AA2399
AA American
321
7:30 AM
MST T4
1:08 PM
CDT
3h 38m
M T W T F S S
Prices
AC3768
AC Air Canada
739
8:22 AM
MST T3
12:54 PM
CDT
3h 32m
M T W T F S S
Prices
AC3107
AC Air Canada
32Q
8:45 AM
MST T3
2:19 PM
CDT
3h 34m
M T W T F S S
Prices
AC3333
AC Air Canada
32Q
8:45 AM
MST T3
2:19 PM
CDT
3h 34m
M T W T F S S
Prices
UA2018
UA United
32Q
8:45 AM
MST T3
2:19 PM
CDT
3h 34m
M T W T F S S
Prices
WN3837
WN Southwest
B38M
8:52 AM
MST T4
2:49 PM
CDT
3h 57m
M T W T F S S
Prices
AC3457
AC Air Canada
739
9:02 AM
MST T3
2:40 PM
CDT
3h 38m
M T W T F S S
Prices
UA1124
UA United
739
9:02 AM
MST T3
2:40 PM
CDT
3h 38m
M T W T F S S
Prices
IB4582
IB Iberia
738
9:24 AM
MST T4
3:07 PM
CDT
3h 43m
M T W T F S S
Prices
AA1011
AA American
738
9:24 AM
MST T4
3:07 PM
CDT
3h 43m
M T W T F S S
Prices
QR8604
QR Qatar
738
9:26 AM
MST T4
3:04 PM
CDT
3h 38m
M T W T F S S
Prices
IB4106
IB Iberia
738
9:26 AM
MST T4
3:04 PM
CDT
3h 38m
M T W T F S S
Prices
AA1392
AA American
738
9:26 AM
MST T4
3:04 PM
CDT
3h 38m
M T W T F S S
Prices
EI7475
EI Aer Lingus
738
9:26 AM
MST T4
3:04 PM
CDT
3h 38m
M T W T F S S
Prices
BA5459
BA British
738
9:26 AM
MST T4
3:04 PM
CDT
3h 38m
M T W T F S S
Prices
F91828
F9 Frontier
32Q
10:24 AM
MST T3
3:59 PM
CDT
3h 35m
M T W T F S S
Prices
BA5461
BA British
738
10:27 AM
MST T4
3:05 PM
CDT
3h 38m
M T W T F S S
Prices
UA1748
UA United
739
11:35 AM
MST T3
5:05 PM
CDT
3h 30m
M T W T F S S
Prices
UA8148
UA United
11:45 AM
MST
4:27 PM
CDT
2h 42m
M T W T F S S
Prices
IB4349
IB Iberia
321
12:16 PM
MST T4
5:48 PM
CDT
3h 32m
M T W T F S S
Prices
GF4114
GF Gulf
321
12:16 PM
MST T4
5:48 PM
CDT
3h 32m
M T W T F S S
Prices
EI7223
EI Aer Lingus
A21N
12:16 PM
MST T4
5:48 PM
CDT
3h 32m
M T W T F S S
Prices
AA1015
AA American
321
12:16 PM
MST T4
5:48 PM
CDT
3h 32m
M T W T F S S
Prices
AA338
AA American
321
12:22 PM
MST T4
6:00 PM
CDT
3h 38m
M T W T F S S
Prices
IB4244
IB Iberia
321
12:22 PM
MST T4
5:53 PM
CDT
3h 31m
M T W T F S S
Prices
UA1842
UA United
32Q
12:43 PM
MST T3
6:22 PM
CDT
3h 39m
M T W T F S S
Prices
UA1156
UA United
32Q
12:48 PM
MST T3
6:25 PM
CDT
3h 37m
M T W T F S S
Prices
WN2075
WN Southwest
7M8
1:25 PM
MST T4
6:50 PM
CDT
3h 25m
M T W T F S S
Prices
WN3087
WN Southwest
73H
1:35 PM
MST T4
7:00 PM
CDT
3h 25m
M T W T F S S
Prices
AA1789
AA American
321
2:30 PM
MST T4
8:04 PM
CDT
3h 34m
M T W T F S S
Prices
AA3274
AA American
321
2:30 PM
MST T4
8:14 PM
CDT
3h 44m
M T W T F S S
Prices
UA1686
UA United
A21N
2:48 PM
MST T3
8:25 PM
CDT
3h 37m
M T W T F S S
Prices
AC3061
AC Air Canada
32Q
2:48 PM
MST T3
8:25 PM
CDT
3h 37m
M T W T F S S
Prices
BA4446
BA British
321
3:31 PM
MST T4
8:05 PM
CDT
3h 34m
M T W T F S S
Prices
AA3089
AA American
7M8
3:32 PM
MST T4
9:05 PM
CDT
3h 33m
M T W T F S S
Prices
AA2786
AA American
7M8
3:35 PM
MST T4
9:15 PM
CDT
3h 40m
M T W T F S S
Prices
GF4168
GF Gulf
737
3:35 PM
MST T3
9:15 PM
CDT
3h 40m
M T W T F S S
Prices
UA1753
UA United
A21N
5:31 PM
MST T3
10:59 PM
CDT
3h 28m
M T W T F S S
Prices
UA1210
UA United
7M9
6:00 PM
MST T3
11:30 PM
CDT
3h 30m
M T W T F S S
Prices
WN1647
WN Southwest
73H
6:30 PM
MST T4
11:55 PM
CDT
3h 25m
M T W T F S S
Prices
WN3002
WN Southwest
7M8
6:30 PM
MST T4
11:55 PM
CDT
3h 25m
M T W T F S S
Prices
AC3257
AC Air Canada
A21N
6:31 PM
MST T3
10:59 PM
CDT
3h 28m
M T W T F S S
Prices
AA1614
AA American
738
7:26 PM
MST T4
12:51 AM+1
CDT
3h 25m
M T W T F S S
Prices
AA3205
AA American
321
11:51 PM
MST T4
5:25 AM+1
CDT
3h 34m
M T W T F S S
Prices
AA1748
AA American
738
11:59 PM
MST T4
5:21 AM+1
CDT
3h 22m
M T W T F S S
Prices
UA555
UA United
739
11:59 PM
MST T3
5:29 AM+1
CDT
3h 30m
M T W T F S S
Prices
AA319
AA American
321
5:00 AM
CDT T3
6:52 AM
MST
3h 52m
M T W T F S S
Prices
EI7570
EI Aer Lingus
321
5:00 AM
CDT T3
6:59 AM
MST
3h 59m
M T W T F S S
Prices
AA2320
AA American
321
5:00 AM
CDT T3
6:59 AM
MST
3h 59m
M T W T F S S
Prices
F91829
F9 Frontier
321
7:00 AM
CDT T5
9:14 AM
MST
4h 14m
M T W T F S S
Prices
WN4151
WN Southwest
737
7:00 AM
CDT T5
9:00 AM
MST
4h
M T W T F S S
Prices
AA695
AA American
32Q
7:02 AM
CDT T3
9:10 AM
MST
4h 8m
M T W T F S S
Prices
AA3172
AA American
7M8
7:05 AM
CDT T3
9:07 AM
MST
4h 2m
M T W T F S S
Prices
AC3719
AC Air Canada
739
7:15 AM
CDT T1
10:20 AM
MST
4h 5m
M T W T F S S
Prices
UA2619
UA United
B39M
7:25 AM
CDT T3
9:30 AM
MST
4h 5m
M T W T F S S
Prices
WN3687
WN Southwest
7S7
7:45 AM
CDT T5
9:40 AM
MST
3h 55m
M T W T F S S
Prices
UA321
UA United
A21N
9:13 AM
CDT T1
11:26 AM
MST
4h 13m
M T W T F S S
Prices
AA3283
AA American
738
9:45 AM
CDT T3
11:47 AM
MST
4h 2m
M T W T F S S
Prices
AA866
AA American
738
10:22 AM
CDT T3
12:20 PM
MST
3h 58m
M T W T F S S
Prices
AC3156
AC Air Canada
A21N
11:19 AM
CDT T1
2:30 PM
MST
4h 11m
M T W T F S S
Prices
UA2164
UA United
32Q
11:20 AM
CDT T1
1:31 PM
MST
4h 11m
M T W T F S S
Prices
AA1459
AA American
738
11:57 AM
CDT T3
1:59 PM
MST
4h 2m
M T W T F S S
Prices
AA1876
AA American
738
12:05 PM
CDT T3
2:02 PM
MST
3h 57m
M T W T F S S
Prices
UA455
UA United
7M8
1:03 PM
CDT T1
3:06 PM
MST
4h 3m
M T W T F S S
Prices
UA2101
UA United
B39M
1:05 PM
CDT T1
3:14 PM
MST
4h 9m
M T W T F S S
Prices
AA2765
AA American
738
1:20 PM
CDT T3
3:18 PM
MST
3h 58m
M T W T F S S
Prices
AA3009
AA American
738
1:31 PM
CDT T3
3:28 PM
MST
3h 57m
M T W T F S S
Prices
AC3247
AC Air Canada
32Q
2:08 PM
CDT T1
5:19 PM
MST
4h 11m
M T W T F S S
Prices
UA1346
UA United
A21N
2:08 PM
CDT T1
4:19 PM
MST
4h 11m
M T W T F S S
Prices
AA1199
AA American
7M8
3:00 PM
CDT T3
5:00 PM
MST
4h
M T W T F S S
Prices
WN2238
WN Southwest
B38M
3:05 PM
CDT T5
5:05 PM
MST
4h
M T W T F S S
Prices
UA2053
UA United
A21N
4:11 PM
CDT T1
6:19 PM
MST
4h 8m
M T W T F S S
Prices
AC3053
AC Air Canada
32Q
4:11 PM
CDT T1
7:19 PM
MST
4h 8m
M T W T F S S
Prices
IB4024
IB Iberia
738
5:02 PM
CDT T3
6:54 PM
MST
3h 52m
M T W T F S S
Prices
AA3180
AA American
321
5:25 PM
CDT T3
7:24 PM
MST
3h 59m
M T W T F S S
Prices
AA332
AA American
321
5:25 PM
CDT T3
7:26 PM
MST
4h 1m
M T W T F S S
Prices
CX7580
CX Cathay Pacific
321
5:25 PM
CDT T3
7:24 PM
MST
3h 59m
M T W T F S S
Prices
GF4110
GF Gulf
321
5:25 PM
CDT T3
7:24 PM
MST
3h 59m
M T W T F S S
Prices
IB4829
IB Iberia
321
5:25 PM
CDT T3
7:26 PM
MST
4h 1m
M T W T F S S
Prices
EI7536
EI Aer Lingus
321
5:25 PM
CDT T3
7:24 PM
MST
3h 59m
M T W T F S S
Prices
IB4283
IB Iberia
321
5:25 PM
CDT T3
7:24 PM
MST
3h 59m
M T W T F S S
Prices
IB4483
IB Iberia
738
6:59 PM
CDT T3
9:04 PM
MST
4h 5m
M T W T F S S
Prices
AA3018
AA American
738
6:59 PM
CDT T3
9:04 PM
MST
4h 5m
M T W T F S S
Prices
EI7448
EI Aer Lingus
B38M
6:59 PM
CDT T3
9:04 PM
MST
4h 5m
M T W T F S S
Prices
GF4258
GF Gulf
738
6:59 PM
CDT T3
9:04 PM
MST
4h 5m
M T W T F S S
Prices
IB4130
IB Iberia
738
7:05 PM
CDT T3
9:04 PM
MST
3h 59m
M T W T F S S
Prices
AA1038
AA American
738
7:05 PM
CDT T3
9:04 PM
MST
3h 59m
M T W T F S S
Prices
WN3688
WN Southwest
73H
7:15 PM
CDT T5
9:10 PM
MST
3h 55m
M T W T F S S
Prices
WN2181
WN Southwest
B38M
7:20 PM
CDT T5
9:25 PM
MST
4h 5m
M T W T F S S
Prices
UA602
UA United
7M9
8:10 PM
CDT T1
10:18 PM
MST
4h 8m
M T W T F S S
Prices
AA3205
AA American
321
8:51 PM
CDT T3
10:50 PM
MST
3h 59m
M T W T F S S
Prices
IB4660
IB Iberia
321
8:51 PM
CDT T3
10:50 PM
MST
3h 59m
M T W T F S S
Prices
EI7447
EI Aer Lingus
321
8:51 PM
CDT T3
10:50 PM
MST
3h 59m
M T W T F S S
Prices
GF4355
GF Gulf
321
8:51 PM
CDT T3
10:50 PM
MST
3h 59m
M T W T F S S
Prices
UA1237
UA United
739
9:50 PM
CDT T1
11:56 PM
MST
4h 6m
M T W T F S S
Prices
AA1645
AA American
738
10:06 PM
CDT T3
11:59 PM
MST
3h 53m
M T W T F S S
Prices

No flights match your filters.

No nonstop flights on this route. connecting options below.

1-STOP
2-STOP Loading...
Phoenix to Chicago
11 carriers, 399 flights/week nonstop.
11 Airlines 399 Flights/wk 1,437 mi 2h 42m nonstop +2h ahead 130 1-stop hubs

PHX–ORD is served by 11 airlines with nonstop service. American Airlines, United Airlines and Air Canada lead the route. The flight covers 1,437 miles in approximately 2h 42m. Beyond nonstop, 130 hubs offer 1-stop connections.

Airline Landscape

All carriers operating nonstop PHX–ORD service, compared side by side.
Airline Freq/wk Aircraft Duration Dep OTP Alliance Codeshares
AA American Airlines 112 321, 738, 7M8 3h22-3h44 90% Oneworld
UA United Airlines 75 32Q, 739, 7M9, A21N 2h42-3h39 90% Star Alliance
AC Air Canada 52 32Q, 739, A21N 3h28-3h38 90% Star Alliance
BA British Airways 35 321, 738 3h31-3h38 90% Oneworld
WN Southwest Airlines 35 73H, 7M8, B38M 3h25-3h57 90%
EI Aer Lingus 28 738, A21N 3h31-3h38 90%
IB Iberia 28 321, 738 3h31-3h43 90% Oneworld
GF Gulf Air 14 321, 737 3h32-3h40 90%
CX Cathay Pacific 7 738 3h32 90% Oneworld
F9 Frontier 7 32Q 3h35 90%
QR Qatar Airways 6 738 3h38 90% Oneworld
Aircraft on this route
321 Airbus A321 – AA, BA, GF, IB
32Q Airbus A321neo – AC, F9, UA
737 Boeing 737-700 – GF
738 Boeing 737-800 – AA, BA, CX, EI, IB, QR
739 Boeing 737-900 – AC, UA
73H Boeing 737-800 – WN
7M8 Boeing 737 MAX 8 – AA, WN
7M9 Boeing 737 MAX 9 – UA
A21NAC, EI, UA
B38MWN
Alliance coverage
Oneworld: AA + BA + CX + IB + QR (188 flights/wk, 47%)
Star Alliance: AC + UA (127 flights/wk, 32%)
Unaffiliated: EI + F9 + GF + WN (84 flights/wk, 21%)
OTP based on airport-level delay snapshots. Duration ranges reflect seasonal/directional variation.

Weekly Schedule Pattern

Nonstop flight frequency by day of week, PHX to ORD direction.
Mon
58
flights
Tue
56
flights
Wed
56
flights
Thu
57
flights
Fri
57
flights
Sat
57
flights
Sun
58
flights
Departure time distribution
12 AM6 AM12 PM6 PM12 AM
Morning departures
Afternoon/evening departures
59
Nonstop flights
399
Outbound / wk
347
Return / wk

Connection Landscape

Beyond nonstop. 1-stop and 2-stop options for PHX to ORD.
1-STOP
One-Stop Connections
130
Hubs
~4h
Fastest
~43h
Longest
Verified with published schedule alignment and minimum connection time.
2-STOP
Two-Stop Connections
5,579
Candidates
Two-stop connections loaded in the connections tab above.
Connections computed from published schedules with minimum connection time verification. Use the interactive explorer above the fold to filter by airline, tier, and layover time.

On-Time Performance

What to expect at each end of your journey.
Outbound
PHX → ORD
90%
Generally reliable. Most flights run on time.
Departing
90%
Arriving
94%
Return
ORD → PHX
64%
Moderate delays possible. Allow buffer time.
Departing
64%
Arriving
92%
OTP = percentage of flights arriving within 15 min of schedule. Based on airport-level delay snapshots. PHX delays → ORD delays →

Other ways to reach Chicago from Phoenix

Nearby airports with service to Chicago O'Hare International Airport.
Metric PHX→ORD TUS→ORD
Distance from PHX 110 mi
Nonstop airlines 11 4
Weekly flights 399 56
Flight time 2h 42m 3h 28m
Departure OTP 90%
Airports within 200 miles of PHX with service to Chicago O'Hare International Airport.

Travel Essentials

Practical planning for this route.
Time Difference
+2h
Chicago is 2 hours ahead of Phoenix.
PHX: MST · ORD: CDT

When it's 6:00 PM in Phoenix, it's 8:00 PM in Chicago.
Distance & Flight Time
1,437 mi / 2,313 km
Nonstop flight time is approximately 2h 42m to 3h 57m.
Getting to PHX

Valley Metro Rail runs to the PHX Sky Train station at 44th Street/Washington (free Sky Train connects to T3 and T4 in 5 minutes). Fare from downtown Phoenix is $2 (20–25 min). The light rail network reaches Tempe, Mesa, and Glendale. The Sky Train runs 24 hours, but light rail does not; check schedules for early morning or late night travel.Taxis from downtown Phoenix cost $20–30; from Scottsdale $30–45. Ride-shares are widely available and comparable to taxis. Terminal 2 is closed; all commercial flights operate from T3 and T4. On-site parking is expensive ($36+/day); off-airport lots are cheaper with shuttles.

Getting from ORD

CTA Blue Line runs 24/7 from O'Hare to downtown Chicago (45 min, $5). Taxis use a flat-rate zone system; downtown is around $40–45 plus tip. Ride-shares are typically $30–50.The Airport Transit System (ATS) connects all terminals and parking. Metra commuter rail does not serve O'Hare directly; transfer downtown via Blue Line.

Chicago Climate

Continental climate with four distinct seasons. Summers are warm and humid (25–32°C) with afternoon thunderstorms. Winters are cold (−10 to −2°C) with heavy snowfall that regularly delays flights December through March.

Spring and fall are mild but unpredictable. Pack layers. Lake Michigan moderates temperatures near the lakefront, but O'Hare sits inland and runs colder.

PHX–ORD Quick Facts

Key statistics for the Phoenix to Chicago route.
Route details
Distance1,437 mi / 2,313 km
Flight time2h 42m to 3h 57m
Time difference+2 hours
Airlines (nonstop)11
Weekly flights399 out / 347 return
1-stop connections130 hubs
Origin: PHX
IATA / ICAOPHX / KPHX
TimezoneAmerica/Phoenix
Passengers/yr51.2M
Elevation1,135 ft / 346 m
Destination: ORD
IATA / ICAOORD / KORD
TimezoneAmerica/Chicago
Passengers/yr80.0M
Elevation680 ft / 207 m

Frequently Asked Questions

Common questions about PHX to ORD flights.
Nonstop flights from Phoenix Sky Harbor International Airport to Chicago O'Hare International Airport take approximately 2h 42m to 3h 57m. The route covers 1,437 miles.
There are approximately 399 nonstop flights per week from PHX to ORD. The return direction has about 347 weekly flights.
Yes, 1-stop connections are available through SCF, SUS, SGF, FTW, UDD, EVV, FWA, HDN, UOX, JAC, MKC, ROA, TEB, YLW, BFI, BZN, EUG, SUA, GNV, APF, HPN, SRQ, OPF, SAF, PBI, ASE, SJU, KOA, MEX, ATW, OGG, ONT, CLT, MEM, GDL, COS, MSP, ELP, SMF, MCI, FSD, STL, GRR, ICT, PIT, SJC, DEN, FAR, YYZ, OKC, MKE, CID, DTW, LAX, YWG, IND, DAL, IAH, SAN, RNO, LAS, TUS, CMH, JAX, BNA, DFW, SAT, MCO, SDF, AGS, ATL, MSY, AUS, SLC, BWI, MSN, OMA, TUL, CLE, LIT, EWR, ABQ, CVG, PDX, SUN, HNL, XNA, GEG, SFO, BOI, FLL, MTY, DSM, TPA, IAD, RDU, SEA, BOS, BHM, PSP, JFK, DCA, SNA, PHL, YOW, MIA, YUL, RIC, TYS, GJT, BUF, MAF, YYC, BDL, SBA, YVR, ORF, RSW, EGE, NGO, HND, ANC, KEF, CUN, SJD, PVR, CDG, ZIH, LHR and TPE. These options provide additional schedule flexibility.
Chicago is 2 hours ahead of Phoenix.
Yes, return flights from ORD to PHX are available. Use the direction toggle at the top to view the return schedule.
Nearby alternatives include TUS. See the Alternatives section for a full comparison.
Click the 'Search Flights' button to check availability and prices on Google Flights. You can also compare airlines and schedules on this page to find the best option.
See the On-Time Performance section for the latest delay data at both airports. This shows departure and arrival reliability to help you plan.
Route data is updated regularly from official airline schedules. On-time performance data comes from recent airport delay snapshots.
Phoenix summers regularly exceed 48°C (118°F), which affects aircraft performance. Hot air is less dense, reducing lift and engine efficiency. Most major carriers use modern aircraft on PHX–ORD that handle the heat without payload restrictions. However, during extreme heat events (above 50°C), smaller regional jets may face limitations. The route primarily uses mainline narrowbodies, so heat-related cancellations are rare.
Phoenix Sky Harbor has three terminals (2, 3, 4). Terminal 4 handles American Airlines, the dominant carrier on PHX–ORD. Terminal 3 handles Southwest and some other carriers. Terminal 2 is being phased out. The free PHX Sky Train connects all terminals to the rental car center and the 44th Street and Washington light rail stations.
Yes. Phoenix is a major winter destination for Midwest and Chicago-area retirees and part-time residents. The result is a heavily asymmetric seasonal pattern: PHX–ORD (returning north) sees highest demand in March–April as snowbirds head home, while ORD–PHX peaks in November–December as travelers head south for winter. Airlines adjust capacity accordingly.

Phoenix to Chicago O'Hare

PHX–ORD links the Sun Belt's fastest-growing major metro to the Midwest's primary hub, with seven carriers operating around 343 weekly departures. American Airlines holds the dominant position given its Phoenix hub, supplemented by United, Southwest, and Frontier. The 2.5-hour flight serves both business travelers and a substantial seasonal leisure market driven by Phoenix's role as a retirement and winter destination.

Seasonal Patterns and Snowbird Traffic

PHX–ORD exhibits one of the more pronounced seasonal demand swings among major US routes. Northbound demand (PHX–ORD direction) peaks sharply in March–April as Midwest residents return from Arizona winters, while the reverse peaks in November. Airlines manage yield carefully on this corridor, with peak fares reflecting the concentrated demand windows. O'Hare's position as a transcontinental connector also attracts connecting passengers using PHX as an intermediate stop.