$71+ 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 6/23. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — CHI
Jun 1 — Jun 81
Round-trip
1 adult, Economy
We work with more than 300 partners to bring you better travel deals
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 August or September, booked 35 days in advance, depart on a Friday or Thursday and return on a Tuesday
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 May 2, 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 May 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Tue 6/912:05 pm
BUF
- ORD
1 stop8h 48m
Multiple Airlines
Wed 6/104:06 pm
ORD
- BUF
2 stops17h 34m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$238
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Tue 6/912:05 pm
BUF
- ORD
1 stop8h 48m
Multiple Airlines
Sat 6/131:18 pm
ORD
- BUF
2 stops20h 22m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$243
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Mon 5/182:49 pm
BUF
- ORD
1 stop18h 06m
Multiple Airlines
Tue 5/194:06 pm
ORD
- BUF
2 stops20h 48m
Multiple Airlines
Deal found 4/28![Multiple Airlines logo]()
$245
This Frontier deal was found by Cheapflights users on 4/29. 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.
Sat 5/21:11 pm
BUF
- MDW
1 stop10h 03m
Frontier
Wed 5/66:00 am
MDW
- BUF
1 stop6h 54m
Frontier
Deal found 4/29![Frontier logo]()
$246
This Southwest deal was found by Cheapflights users on 4/28. 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 5/264:00 pm
BUF
- MDW
1 stop4h 30m
Southwest
Tue 6/212:50 pm
MDW
- BUF
Nonstop1h 30m
Southwest
Deal found 4/28![Southwest logo]()
$247
This American Airlines deal was found by Cheapflights users on 4/28. 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.
Tue 5/196:00 am
BUF
- ORD
Nonstop2h 09m
American Airlines
Tue 5/193:15 pm
ORD
- BUF
1 stop5h 05m
American Airlines
Deal found 4/28![American Airlines logo]()
$247
This Frontier deal was found by Cheapflights users on 4/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:36 am
BUF
- MDW
1 stop11h 26m
Frontier
Mon 6/86:00 am
MDW
- BUF
1 stop6h 54m
Frontier
Deal found 4/27![Frontier logo]()
$248
This Booking.com deal was found by Cheapflights users on 4/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:36 am
BUF
- ORD
1 stop9h 15m
Frontier
Sat 5/165:30 pm
ORD
- BUF
1 stop24h 16m
Frontier
Deal found 4/27![Frontier logo]()
$248
This American Airlines deal was found by Cheapflights users on 5/2. 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 6/166:00 am
BUF
- ORD
Nonstop1h 59m
American Airlines
Tue 6/236:00 pm
ORD
- BUF
1 stop4h 56m
American Airlines
Deal found 5/2![American Airlines logo]()
$249
This Frontier deal was found by Cheapflights users on 4/29. 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.
Sun 7/1911:35 am
BUF
- MDW
1 stop11h 33m
Frontier
Fri 7/316:00 am
MDW
- BUF
1 stop6h 53m
Frontier
Deal found 4/29![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 4/29. 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 7/222:50 pm
BUF
- ORD
1 stop6h 03m
Frontier
Mon 8/310:16 am
ORD
- BUF
1 stop7h 50m
Frontier
Deal found 4/29![Frontier logo]()
$250
This Southwest deal was found by Cheapflights users on 4/30. 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 5/256:00 am
BUF
- MDW
Nonstop1h 40m
Southwest
Wed 5/277:50 am
MDW
- BUF
Nonstop1h 30m
Southwest
Deal found 4/30![Southwest logo]()
$251
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 May 2, 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 May 2, 2026.
This Delta deal was found by Cheapflights users on 5/1. 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 5/276:25 am
BUF
- MDW
1 stop3h 18m
Delta
Sat 5/305:10 pm
MDW
- BUF
1 stop5h 49m
Delta
Deal found 5/1![Delta logo]()
$271
This Southwest deal was found by Cheapflights users on 4/29. 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 5/2312:30 pm
BUF
- MDW
1 stop6h 45m
Southwest
Mon 5/257:45 am
MDW
- BUF
Nonstop1h 30m
Southwest
Deal found 4/29![Southwest logo]()
$275
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/27:00 am
BUF
- ORD
Nonstop1h 59m
United Airlines
Fri 6/56:17 pm
ORD
- BUF
Nonstop1h 46m
United Airlines
Deal found 4/28![United Airlines logo]()
$293
This Southwest deal was found by Cheapflights users on 4/30. 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 5/288:00 pm
BUF
- MDW
Nonstop1h 40m
Southwest
Thu 6/47:00 pm
MDW
- BUF
1 stop4h 10m
Southwest
Deal found 4/30![Southwest logo]()
$275
This Delta deal was found by Cheapflights users on 4/29. 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 5/235:26 pm
BUF
- ORD
1 stop7h 41m
Delta
Mon 5/257:00 pm
ORD
- BUF
1 stop3h 59m
Delta
Deal found 4/29![Delta logo]()
$285
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/97:00 am
BUF
- ORD
Nonstop1h 59m
United Airlines
Wed 6/106:17 pm
ORD
- BUF
Nonstop1h 46m
United Airlines
Deal found 4/28![United Airlines logo]()
$307
This United Airlines deal was found by Cheapflights users on 4/28. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/265:57 pm
BUF
- ORD
Nonstop1h 59m
United Airlines
Tue 6/22:00 pm
ORD
- BUF
Nonstop1h 46m
United Airlines
Deal found 4/28![United Airlines logo]()
$308
This Southwest deal was found by Cheapflights users on 4/27. 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 6/44:10 pm
BUF
- MDW
Nonstop1h 40m
Southwest
Mon 6/88:50 pm
MDW
- BUF
1 stop10h 10m
Southwest
Deal found 4/27![Southwest logo]()
$316
This Delta deal was found by Cheapflights users on 4/28. 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.
Mon 6/89:03 am
BUF
- MDW
1 stop4h 38m
Delta
Thu 6/116:58 pm
MDW
- BUF
1 stop4h 01m
Delta
Deal found 4/28![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 4/28. 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.
Fri 6/58:45 am
BUF
- MDW
2 stops6h 20m
Southwest
Tue 6/95:30 pm
MDW
- BUF
1 stop4h 10m
Southwest
Deal found 4/28![Southwest logo]()
$318
This United Airlines deal was found by Cheapflights users on 5/1. 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 5/275:57 pm
BUF
- ORD
Nonstop1h 59m
United Airlines
Sat 5/307:27 am
ORD
- BUF
Nonstop1h 48m
United Airlines
Deal found 5/1![United Airlines logo]()
$321
This Delta deal was found by Cheapflights users on 4/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/57:39 pm
BUF
- ORD
1 stop5h 20m
Delta
Sat 6/63:00 pm
ORD
- BUF
1 stop7h 59m
Delta
Deal found 4/27![Delta logo]()
$327
This Southwest deal was found by Cheapflights users on 4/29. 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 6/106:00 am
BUF
- MDW
2 stops7h 15m
Southwest
Mon 6/151:00 pm
MDW
- BUF
2 stops5h 15m
Southwest
Deal found 4/29![Southwest logo]()
$323
This KAYAK deal was found by Cheapflights users on 5/1. 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 KAYAK is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/16:29 am
BUF
- MDW
1 stop3h 45m
Delta
Sun 7/56:58 pm
MDW
- BUF
1 stop4h 01m
Delta
Deal found 5/1![Delta logo]()
$361
This Southwest deal was found by Cheapflights users on 5/1. 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 6/297:55 pm
BUF
- MDW
Nonstop1h 40m
Southwest
Thu 7/27:55 am
MDW
- BUF
Nonstop1h 30m
Southwest
Deal found 5/1![Southwest logo]()
$349
This Delta deal was found by Cheapflights users on 5/1. 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 7/307:19 pm
BUF
- ORD
1 stop5h 34m
Delta
Sun 8/27:17 pm
ORD
- BUF
1 stop3h 41m
Delta
Deal found 5/1![Delta logo]()
$389
This Southwest deal was found by Cheapflights users on 4/30. 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 10/198:05 am
BUF
- MDW
Nonstop1h 40m
Southwest
Wed 10/213:00 pm
MDW
- BUF
2 stops6h 10m
Southwest
Deal found 4/30![Southwest logo]()
$364
This Delta deal was found by Cheapflights users on 4/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/139:03 am
BUF
- ORD
1 stop5h 50m
Delta
Sun 6/147:17 pm
ORD
- BUF
1 stop3h 42m
Delta
Deal found 4/27![Delta logo]()
$389
This Southwest deal was found by Cheapflights users on 4/28. 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.
Fri 5/295:45 am
BUF
- ORD
2 stops8h 05m
Southwest
Mon 6/12:40 pm
ORD
- BUF
2 stops7h 40m
Southwest
Deal found 4/28![Southwest logo]()
$373
This Delta deal was found by Cheapflights users on 4/27. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/296:25 am
BUF
- ORD
1 stop3h 20m
Delta
Sun 5/317:00 pm
ORD
- BUF
1 stop3h 59m
Delta
Deal found 4/27![Delta logo]()
$389
This Southwest deal was found by Cheapflights users on 4/30. 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 5/295:45 am
BUF
- ORD
2 stops8h 05m
Southwest
Sun 5/312:40 pm
ORD
- BUF
2 stops8h 05m
Southwest
Deal found 4/30![Southwest logo]()
$415
Last-minute flights from Buffalo to ChicagoDiscover last-minute flight deals from Buffalo to Chicago. Data last updated May 2, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Chicago. Data last updated May 2, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 4/29. 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.
Sat 5/21:11 pm
BUF
- MDW
1 stop10h 03m
Frontier
Wed 5/66:00 am
MDW
- BUF
1 stop6h 54m
Frontier
Deal found 4/29![Frontier logo]()
$246
This Frontier deal was found by Cheapflights users on 5/1. 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.
Sat 5/21:11 pm
BUF
- MDW
1 stop10h 03m
Frontier
Fri 5/156:00 am
MDW
- BUF
1 stop6h 54m
Frontier
Deal found 5/1![Frontier logo]()
$256
This Frontier deal was found by Cheapflights users on 4/29. 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 5/62:49 pm
BUF
- MDW
1 stop8h 13m
Frontier
Wed 5/136:00 am
MDW
- BUF
1 stop6h 54m
Frontier
Deal found 4/29![Frontier logo]()
$260
This Frontier deal was found by Cheapflights users on 5/1. 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 5/711:36 am
BUF
- ORD
1 stop9h 15m
Frontier
Fri 5/156:55 am
ORD
- BUF
1 stop5h 59m
Frontier
Deal found 5/1![Frontier logo]()
$256
This Booking.com deal was found by Cheapflights users on 4/27. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/1211:36 am
BUF
- ORD
1 stop9h 15m
Frontier
Sat 5/165:30 pm
ORD
- BUF
1 stop24h 16m
Frontier
Deal found 4/27![Frontier logo]()
$248
This Kiwi.com deal was found by Cheapflights users on 4/29. 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.
Tue 5/1211:36 am
BUF
- ORD
1 stop21h 19m
Multiple Airlines
Wed 5/203:55 pm
ORD
- BUF
2 stops17h 46m
Multiple Airlines
Deal found 4/29![Multiple Airlines logo]()
$258
This Southwest deal was found by Cheapflights users on 4/30. 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 5/256:00 am
BUF
- MDW
Nonstop1h 40m
Southwest
Wed 5/277:50 am
MDW
- BUF
Nonstop1h 30m
Southwest
Deal found 4/30![Southwest logo]()
$251
This Southwest deal was found by Cheapflights users on 4/28. 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 5/264:00 pm
BUF
- MDW
1 stop4h 30m
Southwest
Tue 6/212:50 pm
MDW
- BUF
Nonstop1h 30m
Southwest
Deal found 4/28![Southwest logo]()
$247
This Kiwi.com deal was found by Cheapflights users on 4/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/292:49 pm
BUF
- MDW
1 stop8h 13m
Frontier
Sun 5/3112:27 pm
MDW
- BUF
1 stop24h 27m
Frontier
Deal found 4/27![Frontier logo]()
$250
This Frontier deal was found by Cheapflights users on 4/27. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/411:36 am
BUF
- MDW
1 stop11h 26m
Frontier
Mon 6/86:00 am
MDW
- BUF
1 stop6h 54m
Frontier
Deal found 4/27![Frontier logo]()
$248
This Southwest deal was found by Cheapflights users on 4/28. 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 6/612:35 pm
BUF
- MDW
Nonstop1h 35m
Southwest
Wed 6/105:30 pm
MDW
- BUF
1 stop4h 10m
Southwest
Deal found 4/28![Southwest logo]()
$261
This Delta deal was found by Cheapflights users on 4/30. 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 6/249:03 am
BUF
- MDW
1 stop4h 38m
Delta
Tue 6/306:58 pm
MDW
- BUF
1 stop4h 01m
Delta
Deal found 4/30![Delta logo]()
$257
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 May 2, 2026.
Search for one-way flight options from Buffalo to Chicago. Find affordable one-way fares based on user searches. Data last updated May 2, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/30. 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.
Tue 6/2311:50 am
BUF
- MDW
1 stop24h 19m
Frontier
Deal found 4/30![Frontier logo]()
$71
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 5/2811:36 am
BUF
- ORD
1 stop21h 19m
Frontier
Deal found 4/29![Frontier logo]()
$73
This Frontier deal was found by Cheapflights users on 4/28. 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.
Tue 5/2611:36 am
BUF
- MDW
1 stop11h 26m
Frontier
Deal found 4/28![Frontier logo]()
$76
This Kiwi.com deal was found by Cheapflights users on 4/28. 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.
Tue 5/267:52 pm
BUF
- ORD
1 stop28h 21m
Frontier
Deal found 4/28![Frontier logo]()
$82
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 5/292:49 pm
BUF
- ORD
1 stop18h 06m
Frontier
Deal found 4/30![Frontier logo]()
$84
This Kiwi.com deal was found by Cheapflights users on 4/29. 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 6/32:49 pm
BUF
- ORD
1 stop18h 06m
Frontier
Deal found 4/29![Frontier logo]()
$85
This Kiwi.com deal was found by Cheapflights users on 4/30. 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 6/242:50 pm
BUF
- MDW
1 stop8h 21m
Frontier
Deal found 4/30![Frontier logo]()
$88
This Super.com deal was found by Cheapflights users on 4/29. 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 5/132:49 pm
BUF
- MDW
1 stop8h 13m
Frontier
Deal found 4/29![Frontier logo]()
$89
This Super.com deal was found by Cheapflights users on 4/29. 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 5/132:49 pm
BUF
- ORD
1 stop6h 02m
Frontier
Deal found 4/29![Frontier logo]()
$89
This Priceline deal was found by Cheapflights users on 5/1. 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 5/272:49 pm
BUF
- MDW
1 stop8h 13m
Frontier
Deal found 5/1![Frontier logo]()
$90
This Frontier deal was found by Cheapflights users on 4/30. 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 5/272:49 pm
BUF
- ORD
1 stop5h 52m
Frontier
Deal found 4/30![Frontier logo]()
$90
This Frontier deal was found by Cheapflights users on 4/30. 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 6/242:50 pm
BUF
- ORD
1 stop6h 00m
Frontier
Deal found 4/30![Frontier logo]()
$95
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 May 2, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $238 (Kiwi.com) |
One-way from | $71 (Kiwi.com) |
Popular in | March |
Cheapest in | August |
Average price | $326 |
Good round-trip deal | $359 or less |
Good one-way deal | $180 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 May 2, 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 - MDW
BUFMDW
Buffalo
Wed 5/27
6:25 am-8:43 am
1 stop3h 18m
Chicago Midway
Sat 5/30
5:10 pm-11:59 pm
1 stop5h 49m
$271
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Sat 5/23
12:30 pm-6:15 pm
1 stop6h 45m
Chicago Midway
Mon 5/25
7:45 am-10:15 am
Nonstop1h 30m
$275
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Thu 5/28
8:00 pm-8:40 pm
Nonstop1h 40m
Chicago Midway
Thu 6/4
7:00 pm-12:10 am
1 stop4h 10m
$275
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
Sat 5/23
5:26 pm-12:07 am
1 stop7h 41m
Chicago O'Hare Intl
Mon 5/25
7:00 pm-11:59 pm
1 stop3h 59m
$285
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
Tue 6/2
7:00 am-7:59 am
Nonstop1h 59m
Chicago O'Hare Intl
Fri 6/5
6:17 pm-9:03 pm
Nonstop1h 46m
$293
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
Tue 6/9
7:00 am-7:59 am
Nonstop1h 59m
Chicago O'Hare Intl
Wed 6/10
6:17 pm-9:03 pm
Nonstop1h 46m
$307
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
Tue 5/26
5:57 pm-6:56 pm
Nonstop1h 59m
Chicago O'Hare Intl
Tue 6/2
2:00 pm-4:46 pm
Nonstop1h 46m
$308
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Thu 6/4
4:10 pm-4:50 pm
Nonstop1h 40m
Chicago Midway
Mon 6/8
8:50 pm-8:00 am
1 stop10h 10m
$316
BuffaloChicago
BUF - MDW
BUFMDW
Buffalo
Fri 6/5
8:45 am-2:05 pm
2 stops6h 20m
Chicago Midway
Tue 6/9
5:30 pm-10:40 pm
1 stop4h 10m
$318
BuffaloChicago
BUF - ORD
BUFORD
Buffalo
Wed 5/27
5:57 pm-6:56 pm
Nonstop1h 59m
Chicago O'Hare Intl
Sat 5/30
7:27 am-10:15 am
Nonstop1h 48m
$321
Showing 1-10 of 41 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 May.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| 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-ORD
BUF-MDW
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-ORD
BUF-MDW
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 month to book a flight from Buffalo to Chicago?
Currently, March is the cheapest month in which you can book a flight from Buffalo to Chicago (average of $73). Flying from Buffalo to Chicago in April is currently the most expensive (average of $200). 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 May 2, 2026.
It’s optimal to fly from Buffalo to Chicago in the afternoon. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight at noon.
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 April 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.
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 May 2, 2026.
The most flights from BUF to CHI are scheduled on a Friday (40 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (29 on average).
How much does it cost to fly round-trip from Buffalo to Chicago?
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 May 2, 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.
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
Comfort
8.0
Entertainment
7.5
Overall
8.0
Boarding
8.1
Food
7.0
Crew
8.6
Reviews
1 / 20
2.0
MediocreDominic,Mar 2026
MCO - SMF
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
Hammond
Porter
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.
Alternative routes
Chicago flight routes
Complete your trip
Flights by cabin class
Other flight options
Other flights from Buffalo
Popular flights
Alternative routes for Buffalo to Chicago
See prices for flight routes from nearby airports that may be better suited for you.
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 May 2, 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 May 2, 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 May 2, 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 May 2, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$92 | Average$200 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$145 | Average$316 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$145 | Average$311 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$237 | Average$369 | FlexibilityNo cancel fee | On-time63% |