$98+ Cheap flights from Illinois to Pittsburgh (PIT)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
ORD — PIT
Oct 14 — Oct 211
Round-trip
1 adult, Economy
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Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
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Cheapest flights from Illinois to PittsburghExplore the most affordable flight options available from Illinois to Pittsburgh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2026.
Explore the most affordable flight options available from Illinois to Pittsburgh. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 14, 2026.
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:20 am -
Nonstop1h 35m
Sat 10/2412:20 pm -
Nonstop1h 40m
Deal found 9/14![Southwest logo]()
$204
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/1411:15 am -
1 stop8h 30m
Mon 11/167:10 pm -
1 stop3h 50m
Deal found 9/14![Southwest logo]()
$224
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:20 am -
Nonstop1h 35m
Sat 10/316:15 am -
Nonstop1h 55m
Deal found 9/11![Southwest logo]()
$227
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:15 am -
Nonstop1h 30m
Sun 11/88:15 pm -
Nonstop1h 45m
Deal found 9/13![Southwest logo]()
$234
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:30 am -
2 stops7h 15m
Wed 10/147:15 pm -
Nonstop1h 45m
Deal found 9/9![Southwest logo]()
$242
This Orbitz deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:00 pm -
1 stop7h 39m
Tue 10/62:42 pm -
1 stop9h 17m
Deal found 9/10![Multiple Airlines logo]()
$246
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:00 am -
1 stop5h 36m
Tue 10/61:34 pm -
1 stop5h 41m
Deal found 9/10![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:55 am -
Nonstop1h 20m
Tue 10/201:50 pm -
Nonstop1h 30m
Deal found 9/13![Southwest logo]()
$248
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:26 am -
1 stop9h 30m
Sun 10/187:51 pm -
1 stop12h 40m
Deal found 9/9![Frontier logo]()
$251
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:50 pm -
1 stop20h 57m
Tue 9/292:42 pm -
1 stop9h 17m
Deal found 9/9![Frontier logo]()
$252
This Expedia deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:39 am -
1 stop6h 54m
Wed 10/147:51 pm -
1 stop12h 40m
Deal found 9/9![Multiple Airlines logo]()
$256
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/45:55 am -
1 stop4h 00m
Tue 10/67:15 pm -
Nonstop1h 45m
Deal found 9/10![Southwest logo]()
$257
Best flights from Illinois to PittsburghDiscover carefully curated flight deals from Illinois to Pittsburgh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.
Discover carefully curated flight deals from Illinois to Pittsburgh that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 14, 2026.
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2110:20 am -
Nonstop1h 35m
Sat 10/2412:20 pm -
Nonstop1h 40m
Deal found 9/14![Southwest logo]()
$204
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:43 pm -
1 stop4h 59m
Wed 12/910:45 am -
2 stops7h 23m
Deal found 9/11![American Airlines logo]()
$278
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/26:54 pm -
1 stop4h 37m
Sun 10/47:45 pm -
1 stop4h 57m
Deal found 9/10![Delta logo]()
$287
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/15:30 pm -
1 stop5h 29m
Wed 12/98:45 am -
1 stop6h 10m
Deal found 9/11![United Airlines logo]()
$343
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/76:30 pm -
Nonstop1h 40m
Wed 10/146:50 am -
Nonstop1h 55m
Deal found 9/9![Southwest logo]()
$227
This JetBlue deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/279:38 am -
1 stop6h 55m
Thu 10/17:00 am -
1 stop7h 45m
Deal found 9/12![JetBlue logo]()
$495
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/410:15 am -
1 stop7h 10m
Sun 11/87:05 pm -
1 stop6h 05m
Deal found 9/13![Southwest logo]()
$247
This American Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:30 pm -
1 stop5h 13m
Mon 10/198:37 pm -
1 stop4h 33m
Deal found 9/12![American Airlines logo]()
$319
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/227:45 am -
Nonstop1h 20m
Sat 10/245:20 pm -
Nonstop1h 30m
Deal found 9/13![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:04 pm -
1 stop6h 42m
Mon 2/1511:00 am -
1 stop6h 22m
Deal found 9/13![Delta logo]()
$339
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/82:13 pm -
Nonstop1h 44m
Sun 10/115:11 am -
Nonstop1h 48m
Deal found 9/9![United Airlines logo]()
$349
This American Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:03 pm -
1 stop5h 40m
Sat 10/109:26 am -
2 stops8h 07m
Deal found 9/9![American Airlines logo]()
$324
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/81:00 pm -
1 stop5h 05m
Wed 10/146:30 am -
1 stop4h 50m
Deal found 9/11![Southwest logo]()
$276
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/710:25 am -
Nonstop1h 36m
Wed 11/112:07 pm -
Nonstop1h 48m
Deal found 9/11![United Airlines logo]()
$359
This American Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/255:28 pm -
1 stop5h 02m
Tue 9/298:47 pm -
1 stop4h 21m
Deal found 9/10![American Airlines logo]()
$329
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/106:10 pm -
Nonstop1h 35m
Fri 11/137:55 pm -
Nonstop1h 30m
Deal found 9/13![Southwest logo]()
$285
This American Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/265:28 pm -
1 stop5h 02m
Wed 9/306:25 pm -
2 stops6h 43m
Deal found 9/11![American Airlines logo]()
$334
This United Airlines deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/235:59 am -
Nonstop1h 39m
Sun 10/256:12 am -
1 stop4h 33m
Deal found 9/10![United Airlines logo]()
$368
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/110:15 am -
Nonstop1h 30m
Wed 12/96:30 pm -
Nonstop1h 55m
Deal found 9/11![Southwest logo]()
$285
This Delta deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:30 pm -
1 stop3h 29m
Mon 11/1611:14 am -
1 stop4h 41m
Deal found 9/13![Delta logo]()
$424
This United Airlines deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1710:30 am -
Nonstop1h 39m
Sun 10/182:11 pm -
Nonstop1h 44m
Deal found 9/11![United Airlines logo]()
$377
This Delta deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 11/87:00 am -
1 stop3h 35m
Fri 11/133:49 pm -
1 stop4h 50m
Deal found 9/13![Delta logo]()
$424
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/227:10 pm -
Nonstop1h 30m
Thu 12/312:20 pm -
Nonstop1h 30m
Deal found 9/10![Southwest logo]()
$303
This Delta deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/237:00 am -
1 stop3h 35m
Sun 10/2510:32 am -
1 stop3h 27m
Deal found 9/13![Delta logo]()
$424
This American Airlines deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/116:00 am -
1 stop5h 28m
Mon 2/1510:24 am -
2 stops7h 08m
Deal found 9/13![American Airlines logo]()
$404
This United Airlines deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:25 am -
1 stop3h 44m
Sun 10/117:00 am -
1 stop4h 12m
Deal found 9/9![United Airlines logo]()
$405
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:50 am -
1 stop4h 05m
Tue 10/206:50 pm -
Nonstop1h 30m
Deal found 9/9![Southwest logo]()
$313
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/186:39 pm -
1 stop4h 36m
Sun 9/207:50 pm -
1 stop4h 23m
Deal found 9/14![United Airlines logo]()
$409
This American Airlines deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/136:14 am -
2 stops6h 43m
Sun 10/188:19 am -
2 stops9h 40m
Deal found 9/12![American Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/34:10 pm -
Nonstop1h 20m
Tue 10/65:40 am -
2 stops8h 45m
Deal found 9/10![Southwest logo]()
$318
Last-minute flights from Illinois to PittsburghDiscover last-minute flight deals from Illinois to Pittsburgh. Data last updated September 14, 2026 and is based on user searches.
Discover last-minute flight deals from Illinois to Pittsburgh. Data last updated September 14, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:50 pm -
1 stop20h 57m
Tue 9/292:42 pm -
1 stop9h 17m
Deal found 9/9![Frontier logo]()
$252
This Orbitz deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Orbitz is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:00 pm -
1 stop7h 39m
Tue 10/62:42 pm -
1 stop9h 17m
Deal found 9/10![Multiple Airlines logo]()
$246
This Delta deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/37:00 am -
1 stop5h 36m
Tue 10/61:34 pm -
1 stop5h 41m
Deal found 9/10![Delta logo]()
$247
This Southwest deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/45:55 am -
1 stop4h 00m
Tue 10/67:15 pm -
Nonstop1h 45m
Deal found 9/10![Southwest logo]()
$257
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/68:30 am -
2 stops7h 15m
Wed 10/147:15 pm -
Nonstop1h 45m
Deal found 9/9![Southwest logo]()
$242
This Expedia deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/79:39 am -
1 stop6h 54m
Wed 10/147:51 pm -
1 stop12h 40m
Deal found 9/9![Multiple Airlines logo]()
$256
This American Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/78:24 am -
Nonstop1h 41m
Thu 10/84:01 pm -
Nonstop1h 53m
Deal found 9/14![American Airlines logo]()
$265
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/81:00 pm -
1 stop5h 05m
Wed 10/147:15 pm -
Nonstop1h 45m
Deal found 9/11![Southwest logo]()
$266
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/137:55 am -
Nonstop1h 20m
Tue 10/201:50 pm -
Nonstop1h 30m
Deal found 9/13![Southwest logo]()
$248
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/158:26 am -
1 stop9h 30m
Sun 10/187:51 pm -
1 stop12h 40m
Deal found 9/9![Frontier logo]()
$251
This Kiwi.com deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/168:11 pm -
1 stop22h 12m
Mon 10/197:51 pm -
1 stop13h 00m
Deal found 9/11![Frontier logo]()
$260
This Southwest deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/2810:20 am -
Nonstop1h 35m
Sat 10/316:15 am -
Nonstop1h 55m
Deal found 9/11![Southwest logo]()
$227
One-way flights from Illinois to PittsburghSearch for one-way flight options from Illinois to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
Search for one-way flight options from Illinois to Pittsburgh. Find affordable one-way fares based on user searches. Data last updated September 14, 2026.
This Jetabroad deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/303:50 pm -
1 stop20h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$98
This Southwest deal was found by Cheapflights users on 9/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/216:30 pm -
Nonstop1h 40m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/13![Southwest logo]()
$100
This Southwest deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/1310:20 am -
Nonstop1h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Southwest logo]()
$104
This CheapOair deal was found by Cheapflights users on 9/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/124:30 pm -
1 stop25h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/12![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 10/289:51 am -
1 stop6h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$106
This Southwest deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:15 pm -
Nonstop1h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Southwest logo]()
$114
This CheapOair deal was found by Cheapflights users on 9/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/63:50 pm -
1 stop20h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/11![Frontier logo]()
$116
This Jetabroad deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:50 pm -
1 stop20h 57m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$119
This Kiwi.com deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/116:44 pm -
2 stops25h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Multiple Airlines logo]()
$120
This Priceline deal was found by Cheapflights users on 9/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/109:51 am -
1 stop6h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/10![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 9/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/69:51 am -
1 stop6h 41m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/9![Frontier logo]()
$121
This Delta deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:38 pm -
1 stop6h 08m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/14![Delta logo]()
$124
Find flight deals from Illinois to Pittsburgh
Keep the following information in mind while searching for Illinois to Pittsburgh flight deals. Data was last updated September 14, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $204 (Southwest) |
One-way from | $98 (Jetabroad) |
Popular in | February |
Cheapest in | September |
Average price | $261 |
Good round-trip deal | $242 or less |
Good one-way deal | $151 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Illinois to Pittsburgh that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 14, 2026.
Use the filters below to find and compare flights from Illinois to Pittsburgh that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisPittsburgh
STL Lambert-St Louis - PIT Pittsburgh
STLPIT
Lambert-St Louis
Wed 10/21
6:30 pm-9:10 pm
Nonstop1h 40m
Pittsburgh
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$100
St. LouisPittsburgh
STL Lambert-St Louis - PIT Pittsburgh
STLPIT
Lambert-St Louis
Sat 10/10
10:30 am-1:05 pm
Nonstop1h 35m
Pittsburgh
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$114
St. LouisPittsburgh
STL Lambert-St Louis - PIT Pittsburgh
STLPIT
Lambert-St Louis
Thu 10/22
10:20 am-12:55 pm
Nonstop1h 35m
Pittsburgh
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$114
St. LouisPittsburgh
STL Lambert-St Louis - PIT Pittsburgh
STLPIT
Lambert-St Louis
Sat 11/7
10:47 am-5:00 pm
1 stop5h 13m
Pittsburgh
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$124
St. LouisPittsburgh
STL Lambert-St Louis - PIT Pittsburgh
STLPIT
Lambert-St Louis
Sat 10/10
5:38 pm-12:46 am
1 stop6h 08m
Pittsburgh
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$124
St. LouisPittsburgh
STL Lambert-St Louis - PIT Pittsburgh
STLPIT
Lambert-St Louis
Wed 11/11
10:00 am-4:03 pm
1 stop5h 03m
Pittsburgh
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$124
St. LouisPittsburgh
STL Lambert-St Louis - PIT Pittsburgh
STLPIT
Lambert-St Louis
Mon 11/9
5:45 am-10:20 am
1 stop3h 35m
Pittsburgh
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$124
St. LouisPittsburgh
STL Lambert-St Louis - PIT Pittsburgh
STLPIT
Lambert-St Louis
Mon 10/12
7:20 pm-12:46 am
1 stop4h 26m
Pittsburgh
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
St. LouisPittsburgh
STL Lambert-St Louis - PIT Pittsburgh
STLPIT
Lambert-St Louis
Fri 11/6
10:15 am-12:50 pm
Nonstop1h 35m
Pittsburgh
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$134
ChicagoPittsburgh
ORD Chicago O'Hare Intl - PIT Pittsburgh
ORDPIT
Chicago O'Hare Intl
Sat 10/31
1:00 pm-7:54 pm
1 stop5h 54m
Pittsburgh
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$141
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Illinois to Pittsburgh
Have a flexible travel schedule? Discover the best time to fly to Pittsburgh from Illinois with our price prediction graph.
STL-PIT
PIA-PIT
ORD-PIT
MDW-PIT
MLI-PIT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Illinois to Pittsburgh
USIL-PIT
STL-PIT
PIA-PIT
ORD-PIT
MDW-PIT
What is the cheapest month to book a flight from Illinois to Pittsburgh?
Currently, September is the cheapest month in which you can book a flight from Illinois to Pittsburgh (average of $273). Flying from Illinois to Pittsburgh in February is currently the most expensive (average of $466). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.
What is the cheapest time of day to fly from IL to PIT?
Find hourly flight availability from Illinois to Pittsburgh. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated September 14, 2026.
When flying from Illinois to Pittsburgh, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 19% versus a flight in the afternoon.
Weekly flight availability from Illinois to Pittsburgh
Explore weekly flight availability from Illinois to Pittsburgh. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated September 14, 2026.
The most flights from USIL to PIT are scheduled on a Monday (54 on average). You will have fewer flight options on Wednesday, which is when the least amount of flights are scheduled (41 on average).
How much does it cost to fly round-trip from Illinois to Pittsburgh?
Airfare is typical for this route at the moment.
Illinois to Pittsburgh flights typically cost between $181 and $440 in October.The cheapest round-trip price found within the last 5 days was $245 on Frontier (Oct 20-Oct 21).
How far ahead should I book a flight from Illinois to Pittsburgh?
The best time to book flights from Illinois to Pittsburgh is 43 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
What is the cheapest day to fly from Illinois to Pittsburgh?
Use this chart to determine the cheapest time to fly round-trip from Illinois to Pittsburgh. Price data was last updated on September 12, 2026.
Travelers seeking maximum savings on their Illinois to Pittsburgh flight should consider departing on Thursday afternoons when fares are most often at their lowest. Sunday evenings flights should be avoided if possible as fares are typically the most expensive at this time.
Related info for your journey
Find useful and relevant information for your journey from Illinois to Pittsburgh. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Pittsburgh?
Book flights to Pittsburgh if you plan to visit one of these locationsMonroeville
Washington
Chester
Mars
Wexford
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Illinois to Pittsburgh
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Complete your trip
Complete your trip to Pittsburgh by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Illinois to Pittsburgh by cabin class
Find flights from Illinois to Pittsburgh, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Illinois and Pittsburgh flights
Browse other Illinois and Pittsburgh flight options. Last updated on September 14, 2026.
Other flights to Pittsburgh
Explore flights to Pittsburgh departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 14, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Illinois to Pittsburgh flights
Consider these flights traveling from Illinois to Pittsburgh.
Top 3 airlines flying from Illinois to Pittsburgh
Discover the top 3 airlines that operate flights from Illinois to Pittsburgh. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 7,457,451 searches. Data last updated September 14, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$117 | Average$466 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$137 | Average$343 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$137 | Average$366 | FlexibilityNo cancel fee | On-time69% |