−29%Verified fare
PHX → Chicago
United States · Frontier · Nonstop
$143 round trip
Usually ~$201 · Dec 2026
Dec 3 → Dec 10 · hotels from ~$169/nightSee it on Google Flights →
American, United, Frontier and Southwest fly nonstop from Phoenix to Chicago. The flight takes about 3h 30m.
| From | Phoenix Sky Harbor (PHX) |
|---|---|
| To | O'Hare (ORD) and Midway (MDW) |
| Nonstop airlines | O'Hare: American, United, Frontier Midway: Southwest, Frontier |
| Flight time | About 3h 30m (1,447 miles) |
| Cheapest month | February (median about $201 round trip) |
| Most expensive | July and June |
| Typical round trip | $224 to $394 |
| Best time to book | About 6 weeks ahead |
| Google Flights typical price | About $201 round trip, for the dates we checked recently |
February is usually the cheapest month to fly from Phoenix to Chicago, with a median round trip around $201. July and June cost the most, around $363 and $360. Most round trips have cost $224 to $394.
Booking about 6 weeks before departure has saved the most on this route, about 37% compared with booking in the last two weeks.
Those are typical prices. Our daily scan looks for fares well below them: when one shows up from PHX, it appears at the top of this page and goes out by email.
Free weekly email with the best verified fares from Phoenix Sky Harbor. Unsubscribe anytime.
O'Hare: American, United, Frontier; Midway: Southwest, Frontier. Schedules change, so check before booking.
About 3h 30m (1,447 miles).
February is usually the cheapest month to fly from Phoenix to Chicago, with a median round trip around $201. July and June cost the most, around $363 and $360. Most round trips have cost $224 to $394.
Booking about 6 weeks before departure has saved the most on this route, about 37% compared with booking in the last two weeks.
Be flexible on dates, compare the nearby airports listed above, and watch for fare drops. Our free newsletter checks fares from PHX every morning and only sends fares at least 20% below the typical price for that route and dates.
Prices are round-trip medians over the past 12 months from KAYAK route data, checked October 2026. Nonstop airlines from Phoenix Sky Harbor and airline schedules as of October 2026. Fares and schedules change, so confirm before you book.