$100+ Cheap flights from Buffalo (BUF) to Chicago (CHI)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — CHI
Aug 28 — Sep 41
Round-trip
1 adult, Economy
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Find cheap flights from Buffalo to Chicago with Cheapflights
1. Tell us where you want to go
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from Buffalo to Chicago are usually found in September or February, booked 35 days in advance, depart on a Saturday or Thursday and return on a Saturday
Cheap flight deals from Buffalo to Chicago
Cheapest
Best
Last-minute
One-way
Cheapest flights from Buffalo to ChicagoExplore the most affordable flight options available from Buffalo to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.
Explore the most affordable flight options available from Buffalo to Chicago. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2026.
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Sat 8/1512:28 pm
BUF
- ORD
1 stop8h 25m
Frontier
Tue 8/181:59 pm
ORD
- BUF
1 stop19h 30m
Frontier
Deal found 7/28![Frontier logo]()
$241
This Frontier deal was found by Cheapflights users on 7/28. 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 8/2011:36 am
BUF
- ORD
1 stop9h 23m
Frontier
Mon 8/249:10 pm
ORD
- BUF
1 stop11h 13m
Frontier
Deal found 7/28![Frontier logo]()
$242
This Southwest deal was found by Cheapflights users on 7/28. 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 9/3012:35 pm
BUF
- MDW
Nonstop1h 35m
Southwest
Thu 10/17:25 am
MDW
- BUF
1 stop3h 35m
Southwest
Deal found 7/28![Southwest logo]()
$243
This Priceline deal was found by Cheapflights users on 7/27. 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.
Thu 9/2412:49 pm
BUF
- ORD
1 stop11h 10m
Multiple Airlines
Tue 9/2910:59 am
ORD
- BUF
1 stop6h 34m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$243
This Priceline deal was found by Cheapflights users on 7/27. 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.
Wed 9/161:40 pm
BUF
- ORD
1 stop5h 43m
Multiple Airlines
Sun 9/207:00 am
ORD
- BUF
1 stop7h 37m
Multiple Airlines
Deal found 7/27![Multiple Airlines logo]()
$244
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Sat 9/511:36 am
BUF
- ORD
1 stop9h 32m
Frontier
Sun 9/61:59 pm
ORD
- BUF
1 stop19h 30m
Frontier
Deal found 7/28![Frontier logo]()
$245
This Expedia deal was found by Cheapflights users on 7/28. 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.
Thu 9/39:15 am
BUF
- ORD
1 stop8h 02m
Multiple Airlines
Mon 9/79:10 pm
ORD
- BUF
1 stop11h 13m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$246
This Southwest deal was found by Cheapflights users on 7/28. 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 9/1011:45 am
BUF
- MDW
Nonstop1h 35m
Southwest
Mon 9/217:30 am
MDW
- BUF
1 stop4h 15m
Southwest
Deal found 7/28![Southwest logo]()
$247
This American Airlines deal was found by Cheapflights users on 7/27. 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 9/15:40 pm
BUF
- ORD
1 stop5h 50m
American Airlines
Sat 9/198:46 am
ORD
- BUF
Nonstop1h 53m
American Airlines
Deal found 7/27![American Airlines logo]()
$247
This American Airlines deal was found by Cheapflights users on 7/27. 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 9/1012:09 pm
BUF
- ORD
Nonstop2h 10m
American Airlines
Thu 9/177:20 pm
ORD
- BUF
Nonstop1h 50m
American Airlines
Deal found 7/27![American Airlines logo]()
$248
This JetBlue deal was found by Cheapflights users on 7/27. 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.
Tue 8/116:00 am
BUF
- ORD
1 stop5h 11m
JetBlue
Sat 8/151:55 pm
ORD
- BUF
1 stop8h 48m
JetBlue
Deal found 7/27![JetBlue logo]()
$249
This Trip.com deal was found by Cheapflights users on 7/27. 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.
Sat 8/2911:36 am
BUF
- ORD
1 stop9h 32m
Frontier
Sun 8/307:44 pm
ORD
- BUF
1 stop21h 25m
Frontier
Deal found 7/27![Frontier logo]()
$250
Best flights from Buffalo to ChicagoDiscover carefully curated flight deals from Buffalo to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2026.
Discover carefully curated flight deals from Buffalo to Chicago that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2026.
This Priceline deal was found by Cheapflights users on 7/28. 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.
Fri 9/43:32 pm
BUF
- ORD
1 stop7h 26m
Multiple Airlines
Mon 9/79:10 pm
ORD
- BUF
1 stop11h 13m
Multiple Airlines
Deal found 7/28![Multiple Airlines logo]()
$241
This Southwest deal was found by Cheapflights users on 7/28. 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 9/16:00 am
BUF
- MDW
1 stop4h 00m
Southwest
Sat 9/57:40 am
MDW
- BUF
Nonstop1h 30m
Southwest
Deal found 7/28![Southwest logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 7/28. 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 9/411:36 am
BUF
- ORD
1 stop21h 17m
Frontier
Mon 9/79:10 pm
ORD
- BUF
2 stops12h 19m
Frontier
Deal found 7/28![Frontier logo]()
$297
This American Airlines deal was found by Cheapflights users on 7/28. 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 9/47:34 pm
BUF
- ORD
1 stop5h 10m
American Airlines
Mon 9/79:10 pm
ORD
- BUF
Nonstop1h 52m
American Airlines
Deal found 7/28![American Airlines logo]()
$298
This United Airlines deal was found by Cheapflights users on 7/23. 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 8/2510:30 am
BUF
- ORD
Nonstop1h 59m
United Airlines
Wed 8/266:15 pm
ORD
- BUF
Nonstop1h 52m
United Airlines
Deal found 7/23![United Airlines logo]()
$307
This Delta deal was found by Cheapflights users on 7/28. 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.
Wed 10/76:10 am
BUF
- MDW
1 stop4h 07m
Delta
Thu 10/86:44 pm
MDW
- BUF
1 stop4h 15m
Delta
Deal found 7/28![Delta logo]()
$308
This Southwest deal was found by Cheapflights users on 7/25. 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 8/196:00 am
BUF
- MDW
2 stops7h 05m
Southwest
Mon 8/248:05 am
MDW
- BUF
Nonstop1h 40m
Southwest
Deal found 7/25![Southwest logo]()
$252
This Southwest deal was found by Cheapflights users on 7/26. 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 8/206:30 am
BUF
- MDW
2 stops9h 00m
Southwest
Mon 8/243:15 pm
MDW
- BUF
1 stop6h 00m
Southwest
Deal found 7/26![Southwest logo]()
$262
This United Airlines deal was found by Cheapflights users on 7/25. 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 9/810:30 am
BUF
- ORD
Nonstop1h 59m
United Airlines
Tue 9/156:49 am
ORD
- BUF
Nonstop1h 39m
United Airlines
Deal found 7/25![United Airlines logo]()
$308
This Southwest deal was found by Cheapflights users on 7/25. 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 12/34:55 pm
BUF
- MDW
1 stop6h 45m
Southwest
Tue 12/81:15 pm
MDW
- BUF
2 stops7h 35m
Southwest
Deal found 7/25![Southwest logo]()
$262
This Southwest deal was found by Cheapflights users on 7/25. 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 9/265:45 am
BUF
- MDW
2 stops8h 20m
Southwest
Tue 9/298:40 am
MDW
- BUF
2 stops8h 05m
Southwest
Deal found 7/25![Southwest logo]()
$267
This American Airlines deal was found by Cheapflights users on 7/28. 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 8/2810:26 am
BUF
- ORD
1 stop6h 39m
American Airlines
Sun 8/302:19 pm
ORD
- BUF
Nonstop1h 45m
American Airlines
Deal found 7/28![American Airlines logo]()
$379
This Southwest deal was found by Cheapflights users on 7/28. 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 8/225:45 am
BUF
- MDW
1 stop5h 55m
Southwest
Mon 8/246:20 pm
MDW
- BUF
Nonstop1h 30m
Southwest
Deal found 7/28![Southwest logo]()
$268
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/1410:30 am
BUF
- ORD
Nonstop1h 59m
United Airlines
Mon 8/176:15 pm
ORD
- BUF
Nonstop1h 52m
United Airlines
Deal found 7/27![United Airlines logo]()
$359
This Southwest deal was found by Cheapflights users on 7/27. 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 8/176:00 am
BUF
- MDW
1 stop6h 45m
Southwest
Wed 8/198:40 am
MDW
- BUF
Nonstop1h 40m
Southwest
Deal found 7/27![Southwest logo]()
$268
This United Airlines deal was found by Cheapflights users on 7/27. 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 8/215:58 pm
BUF
- ORD
Nonstop2h 02m
United Airlines
Sun 8/232:07 pm
ORD
- BUF
Nonstop1h 49m
United Airlines
Deal found 7/27![United Airlines logo]()
$384
This Southwest deal was found by Cheapflights users on 7/24. 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 9/149:40 am
BUF
- MDW
2 stops9h 10m
Southwest
Thu 9/171:00 pm
MDW
- BUF
2 stops8h 45m
Southwest
Deal found 7/24![Southwest logo]()
$288
This United Airlines deal was found by Cheapflights users on 7/24. 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 8/87:52 pm
BUF
- ORD
2 stops12h 50m
United Airlines
Sun 8/910:25 am
ORD
- BUF
Nonstop1h 48m
United Airlines
Deal found 7/24![United Airlines logo]()
$389
This United Airlines deal was found by Cheapflights users on 7/27. 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 9/106:00 am
BUF
- ORD
1 stop5h 57m
United Airlines
Thu 9/176:15 pm
ORD
- BUF
Nonstop1h 52m
United Airlines
Deal found 7/27![United Airlines logo]()
$398
This Southwest deal was found by Cheapflights users on 7/27. 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.
Fri 12/42:00 pm
BUF
- MDW
Nonstop1h 45m
Southwest
Mon 12/78:10 am
MDW
- BUF
2 stops7h 10m
Southwest
Deal found 7/27![Southwest logo]()
$303
This United Airlines deal was found by Cheapflights users on 7/24. 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 9/16:55 am
BUF
- ORD
Nonstop2h 00m
United Airlines
Wed 9/26:15 pm
ORD
- BUF
1 stop4h 29m
United Airlines
Deal found 7/24![United Airlines logo]()
$398
This United Airlines deal was found by Cheapflights users on 7/26. 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 10/167:59 pm
BUF
- ORD
1 stop4h 33m
United Airlines
Mon 10/196:00 pm
ORD
- BUF
Nonstop1h 47m
United Airlines
Deal found 7/26![United Airlines logo]()
$398
Last-minute flights from Buffalo to ChicagoDiscover last-minute flight deals from Buffalo to Chicago. Data last updated July 29, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Chicago. Data last updated July 29, 2026 and is based on user searches.
This JetBlue deal was found by Cheapflights users on 7/27. 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.
Tue 8/116:00 am
BUF
- ORD
1 stop5h 11m
JetBlue
Sat 8/151:55 pm
ORD
- BUF
1 stop8h 48m
JetBlue
Deal found 7/27![JetBlue logo]()
$249
This Kiwi.com deal was found by Cheapflights users on 7/25. 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.
Thu 8/1311:29 am
BUF
- ORD
1 stop9h 24m
Frontier
Mon 8/177:05 am
ORD
- BUF
1 stop26h 24m
Frontier
Deal found 7/25![Frontier logo]()
$259
This Kiwi.com deal was found by Cheapflights users on 7/28. 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.
Sat 8/1512:28 pm
BUF
- ORD
1 stop8h 25m
Frontier
Tue 8/181:59 pm
ORD
- BUF
1 stop19h 30m
Frontier
Deal found 7/28![Frontier logo]()
$241
This American Airlines deal was found by Cheapflights users on 7/27. 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 8/176:00 am
BUF
- ORD
1 stop5h 30m
American Airlines
Wed 8/192:19 pm
ORD
- BUF
Nonstop1h 45m
American Airlines
Deal found 7/27![American Airlines logo]()
$252
This Delta deal was found by Cheapflights users on 7/28. 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.
Wed 8/198:57 am
BUF
- MDW
1 stop4h 42m
Delta
Mon 8/246:42 pm
MDW
- BUF
1 stop4h 16m
Delta
Deal found 7/28![Delta logo]()
$257
This Frontier deal was found by Cheapflights users on 7/28. 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 8/2011:36 am
BUF
- ORD
1 stop9h 23m
Frontier
Mon 8/249:10 pm
ORD
- BUF
1 stop11h 13m
Frontier
Deal found 7/28![Frontier logo]()
$242
This American Airlines deal was found by Cheapflights users on 7/26. 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 8/2010:26 am
BUF
- ORD
1 stop5h 49m
American Airlines
Tue 8/255:00 am
ORD
- BUF
1 stop4h 18m
American Airlines
Deal found 7/26![American Airlines logo]()
$257
This Southwest deal was found by Cheapflights users on 7/27. 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 8/207:10 pm
BUF
- MDW
Nonstop1h 35m
Southwest
Mon 8/2412:45 pm
MDW
- BUF
Nonstop1h 30m
Southwest
Deal found 7/27![Southwest logo]()
$258
This Southwest deal was found by Cheapflights users on 7/28. 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 8/2711:45 am
BUF
- MDW
Nonstop1h 35m
Southwest
Thu 9/31:00 pm
MDW
- BUF
2 stops8h 45m
Southwest
Deal found 7/28![Southwest logo]()
$252
This Southwest deal was found by Cheapflights users on 7/27. 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 8/294:35 pm
BUF
- MDW
Nonstop1h 40m
Southwest
Mon 8/317:30 am
MDW
- BUF
1 stop4h 15m
Southwest
Deal found 7/27![Southwest logo]()
$247
This Trip.com deal was found by Cheapflights users on 7/27. 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.
Sat 8/2911:36 am
BUF
- ORD
1 stop9h 32m
Frontier
Sun 8/307:44 pm
ORD
- BUF
1 stop21h 25m
Frontier
Deal found 7/27![Frontier logo]()
$250
This American Airlines deal was found by Cheapflights users on 7/28. 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 8/315:21 pm
BUF
- ORD
1 stop7h 23m
American Airlines
Thu 9/32:19 pm
ORD
- BUF
Nonstop1h 45m
American Airlines
Deal found 7/28![American Airlines logo]()
$247
One-way flights from Buffalo to ChicagoSearch for one-way flight options from Buffalo to Chicago. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
Search for one-way flight options from Buffalo to Chicago. Find affordable one-way fares based on user searches. Data last updated July 29, 2026.
This Frontier deal was found by Cheapflights users on 7/26. 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 9/231:40 pm
BUF
- MDW
1 stop5h 11m
Frontier
Deal found 7/26![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 7/26. 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 9/231:40 pm
BUF
- ORD
1 stop5h 43m
Frontier
Deal found 7/26![Frontier logo]()
$100
This Frontier deal was found by Cheapflights users on 7/24. 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.
Tue 9/151:16 pm
BUF
- ORD
1 stop7h 28m
Frontier
Deal found 7/24![Frontier logo]()
$101
This Super.com deal was found by Cheapflights users on 7/26. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:36 am
BUF
- MDW
1 stop12h 11m
Frontier
Deal found 7/26![Frontier logo]()
$105
This Super.com deal was found by Cheapflights users on 7/28. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1911:36 am
BUF
- ORD
1 stop9h 32m
Frontier
Deal found 7/28![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 7/25. 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 8/2611:36 am
BUF
- MDW
1 stop12h 11m
Frontier
Deal found 7/25![Frontier logo]()
$106
This Mytrip deal was found by Cheapflights users on 7/26. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/2511:36 am
BUF
- ORD
1 stop9h 23m
Frontier
Deal found 7/26![Frontier logo]()
$106
This Frontier deal was found by Cheapflights users on 7/25. 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 8/1911:36 am
BUF
- MDW
1 stop12h 11m
Frontier
Deal found 7/25![Frontier logo]()
$107
This Trip.com deal was found by Cheapflights users on 7/26. 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.
Sat 8/2211:36 am
BUF
- MDW
1 stop12h 11m
Frontier
Deal found 7/26![Frontier logo]()
$109
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Mon 10/261:13 pm
BUF
- ORD
1 stop23h 49m
Frontier
Deal found 7/24![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 7/24. 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.
Mon 10/261:13 pm
BUF
- MDW
1 stop22h 45m
Frontier
Deal found 7/24![Frontier logo]()
$113
This Cheapflightsfares deal was found by Cheapflights users on 7/25. 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 Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:15 am
BUF
- ORD
1 stop8h 02m
JetBlue
Deal found 7/25![JetBlue logo]()
$114
Find flight deals from Buffalo to Chicago
Discover tips and strategies to find the most affordable flight options for your journey from Buffalo (BUF) to Chicago (CHI). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 29, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $241 (Kiwi.com) |
One-way from | $100 (Frontier) |
Popular in | March |
Cheapest in | September |
Average price | $389 |
Good round-trip deal | $356 or less |
Good one-way deal | $204 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Buffalo to Chicago 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 2,558,603 searches. Data last updated July 29, 2026.
Use the filters below to find and compare flights from Buffalo to Chicago that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
Fri 9/4
3:32 pm-9:58 pm
1 stop7h 26m
Chicago O'Hare Intl
Mon 9/7
9:10 pm-9:23 am
1 stop11h 13m
$241
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Tue 9/1
6:00 am-9:00 am
1 stop4h 00m
Chicago Midway
Sat 9/5
7:40 am-10:10 am
Nonstop1h 30m
$247
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Wed 8/19
6:00 am-12:05 pm
2 stops7h 05m
Chicago Midway
Mon 8/24
8:05 am-10:45 am
Nonstop1h 40m
$252
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Thu 8/20
6:30 am-2:30 pm
2 stops9h 00m
Chicago Midway
Mon 8/24
3:15 pm-10:15 pm
1 stop6h 00m
$262
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Thu 12/3
4:55 pm-10:40 pm
1 stop6h 45m
Chicago Midway
Tue 12/8
1:15 pm-9:50 pm
2 stops7h 35m
$262
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Sat 9/26
5:45 am-1:05 pm
2 stops8h 20m
Chicago Midway
Tue 9/29
8:40 am-5:45 pm
2 stops8h 05m
$267
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Sat 8/22
5:45 am-10:40 am
1 stop5h 55m
Chicago Midway
Mon 8/24
6:20 pm-8:50 pm
Nonstop1h 30m
$268
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Mon 8/17
6:00 am-11:45 am
1 stop6h 45m
Chicago Midway
Wed 8/19
8:40 am-11:20 am
Nonstop1h 40m
$268
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Mon 9/14
9:40 am-5:50 pm
2 stops9h 10m
Chicago Midway
Thu 9/17
1:00 pm-10:45 pm
2 stops8h 45m
$288
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
Fri 9/4
11:36 am-7:53 am
1 stop21h 17m
Chicago O'Hare Intl
Mon 9/7
9:10 pm-10:29 am
2 stops12h 19m
$297
Showing 1-10 of 42 resultsSorted by cheapest first
Compare providers for flights from Buffalo to Chicago
Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Buffalo to Chicago in July.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Buffalo-Chicago flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Buffalo-Chicago flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Buffalo-Chicago flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Buffalo-Chicago flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Buffalo-Chicago flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.
Best time to book a flight from Buffalo to Chicago
Have a flexible travel schedule? Discover the best time to fly to Chicago from Buffalo with our price prediction graph.
BUF-CHI
BUF-MDW
BUF-ORD
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 Buffalo to Chicago
BUF-CHI
BUF-MDW
BUF-ORD
What is the cheapest month to book a flight from Buffalo to Chicago?
Currently, January is the cheapest month in which you can book a flight from Buffalo to Chicago (average of $278). Flying from Buffalo to Chicago in March is currently the most expensive (average of $436). 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 BUF to CHI?
Find hourly flight availability from Buffalo to Chicago. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2026.
It’s optimal to fly from Buffalo to Chicago in the afternoon. By choosing this option you can save up to 24% on the cost of your flight, compared to a flight at noon.
Weekly flight availability from Buffalo to Chicago
Explore weekly flight availability from Buffalo to Chicago. 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 July 29, 2026.
The most flights from BUF to CHI are scheduled on a Tuesday (40 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (20 on average).
How much does it cost to fly round-trip from Buffalo to Chicago?
Airfare is typical for this route at the moment.
Buffalo to Chicago flights typically cost between $226 and $369 in August.The cheapest round-trip price found within the last 5 days was $241 on Frontier (Aug 15-Aug 18).
How far ahead should I book a flight from Buffalo to Chicago?
The best time to book flights from Buffalo to Chicago is 34 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 Buffalo to Chicago?
Use this chart to determine the cheapest time to fly round-trip from Buffalo to Chicago. Price data was last updated on July 25, 2026.
Travelers seeking maximum savings on their Buffalo to Chicago flight should consider departing on Tuesday evenings when fares are most often at their lowest. Thursday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Chicago
Get insights into the airlines that provide service to Chicago. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Chicago. Reviews last updated July 29, 2026.
Peruse reviews from past customers who have flown with Southwest,United Airlines, andAmerican Airlines from Buffalo to Chicago to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Boarding
8.1
Entertainment
7.5
Crew
8.6
Overall
8.0
Food
7.0
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Related info for your journey
Find useful and relevant information for your journey from Buffalo to Chicago. 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 Chicago?
Book flights to Chicago if you plan to visit one of these locationsBenton Harbor
Lansing
Merrillville
Valparaiso
Hammond
Saint Joseph
Porter
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Alternative routes for Buffalo to Chicago
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Other flights to Chicago
Explore flights to Chicago departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on July 29, 2026.
Complete your trip
Complete your trip to Chicago by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Buffalo to Chicago by cabin class
Find flights from Buffalo to Chicago, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Buffalo and Chicago flights
Browse other Buffalo and Chicago flight options. Last updated on July 29, 2026.
Other flights from Buffalo
Browse through other flights departing from Buffalo. Flights are based on user searches made on Cheapflights and were last updated on July 29, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 4 airlines flying from Buffalo to Chicago
Discover the top 4 airlines that operate flights from Buffalo to Chicago. 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 2,558,603 searches. Data last updated July 29, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$92 | Average$202 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$145 | Average$345 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$232 | Average$354 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$237 | Average$369 | FlexibilityNo cancel fee | On-time63% |