$87+ 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 9/11. Fares are subject to change and may not be available on all flights or dates of travel.
BUF — CHI
Sep 20 — Sep 271
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 February or September, booked 35 days in advance, depart on a Thursday or Saturday 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 August 21, 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 August 21, 2026.
This Southwest deal was found by Cheapflights users on 8/20. 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 9/117:10 pm -
Nonstop1h 35m
Mon 9/146:20 pm -
Nonstop1h 35m
Deal found 8/20![Southwest logo]()
$236
This American Airlines deal was found by Cheapflights users on 8/19. 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 9/117:59 am -
Nonstop2h 11m
Mon 9/147:20 pm -
Nonstop1h 50m
Deal found 8/19![American Airlines logo]()
$236
This Delta deal was found by Cheapflights users on 8/16. 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 10/76:15 am -
1 stop4h 02m
Thu 10/86:44 pm -
1 stop4h 15m
Deal found 8/16![Delta logo]()
$237
This Delta deal was found by Cheapflights users on 8/16. 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 10/76:15 am -
1 stop5h 14m
Thu 10/87:30 pm -
1 stop3h 29m
Deal found 8/16![Delta logo]()
$237
This Frontier deal was found by Cheapflights users on 8/18. 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 10/91:44 pm -
1 stop10h 59m
Mon 10/126:15 am -
1 stop5h 44m
Deal found 8/18![Frontier logo]()
$238
This Frontier deal was found by Cheapflights users on 8/20. 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.
Mon 9/281:40 pm -
1 stop5h 11m
Sat 10/36:25 am -
1 stop5h 25m
Deal found 8/20![Frontier logo]()
$239
This Frontier deal was found by Cheapflights users on 8/20. 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.
Mon 9/281:40 pm -
1 stop5h 43m
Sat 10/36:20 am -
1 stop5h 30m
Deal found 8/20![Frontier logo]()
$239
This Trip.com deal was found by Cheapflights users on 8/16. 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.
Tue 9/111:36 am -
1 stop9h 32m
Sat 9/57:44 pm -
1 stop12h 39m
Deal found 8/16![Frontier logo]()
$241
This Southwest deal was found by Cheapflights users on 8/17. 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 9/2912:00 pm -
1 stop4h 50m
Sat 10/38:10 am -
2 stops8h 25m
Deal found 8/17![Southwest logo]()
$242
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/296:51 pm -
1 stop29h 08m
Thu 10/17:28 pm -
1 stop16h 27m
Deal found 8/19![Frontier logo]()
$242
This CheapOair deal was found by Cheapflights users on 8/20. 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.
Wed 9/161:40 pm -
1 stop5h 11m
Sat 9/196:25 am -
1 stop5h 30m
Deal found 8/20![Frontier logo]()
$244
This American Airlines deal was found by Cheapflights users on 8/18. 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 9/115:44 pm -
1 stop5h 16m
Tue 9/152:32 pm -
Nonstop1h 46m
Deal found 8/18![American Airlines logo]()
$246
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 August 21, 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 August 21, 2026.
This Southwest deal was found by Cheapflights users on 8/20. 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 9/117:10 pm -
Nonstop1h 35m
Mon 9/146:20 pm -
Nonstop1h 35m
Deal found 8/20![Southwest logo]()
$236
This Delta deal was found by Cheapflights users on 8/18. 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.
Tue 9/152:10 pm -
1 stop7h 21m
Tue 9/225:10 pm -
1 stop5h 43m
Deal found 8/18![Delta logo]()
$237
This United Airlines deal was found by Cheapflights users on 8/20. 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 9/186:37 am -
Nonstop2h 00m
Fri 9/256:56 pm -
Nonstop1h 47m
Deal found 8/20![United Airlines logo]()
$266
This Delta deal was found by Cheapflights users on 8/19. 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.
Tue 9/293:53 pm -
1 stop5h 37m
Thu 10/15:10 pm -
1 stop5h 43m
Deal found 8/19![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 8/18. 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 10/243:40 pm -
2 stops7h 00m
Mon 10/267:25 am -
1 stop3h 35m
Deal found 8/18![Southwest logo]()
$238
This Southwest deal was found by Cheapflights users on 8/21. 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 9/163:00 pm -
1 stop6h 50m
Sat 9/196:35 am -
2 stops10h 05m
Deal found 8/21![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/186:37 am -
Nonstop2h 00m
Sun 9/206:15 pm -
Nonstop1h 52m
Deal found 8/18![United Airlines logo]()
$274
This Delta deal was found by Cheapflights users on 8/19. 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 10/172:10 pm -
1 stop6h 10m
Mon 10/197:30 pm -
1 stop3h 29m
Deal found 8/19![Delta logo]()
$256
This Southwest deal was found by Cheapflights users on 8/19. 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 9/1612:00 pm -
2 stops8h 25m
Wed 9/236:30 am -
1 stop5h 00m
Deal found 8/19![Southwest logo]()
$242
This United Airlines deal was found by Cheapflights users on 8/18. 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 10/97:00 am -
Nonstop2h 00m
Sun 10/112:00 pm -
Nonstop1h 43m
Deal found 8/18![United Airlines logo]()
$274
This Delta deal was found by Cheapflights users on 8/20. 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 9/112:10 pm -
1 stop7h 21m
Mon 9/142:29 pm -
1 stop7h 28m
Deal found 8/20![Delta logo]()
$256
This Southwest deal was found by Cheapflights users on 8/19. 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 10/164:30 pm -
1 stop6h 05m
Mon 10/197:55 am -
Nonstop1h 30m
Deal found 8/19![Southwest logo]()
$246
This United Airlines deal was found by Cheapflights users on 8/16. 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 10/207:00 am -
Nonstop2h 00m
Sat 10/246:50 am -
Nonstop1h 39m
Deal found 8/16![United Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 8/18. 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 10/57:20 pm -
1 stop6h 00m
Mon 10/197:55 am -
Nonstop1h 30m
Deal found 8/18![Southwest logo]()
$246
This United Airlines deal was found by Cheapflights users on 8/20. 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 9/1210:27 am -
Nonstop1h 59m
Wed 9/166:29 am -
Nonstop1h 39m
Deal found 8/20![United Airlines logo]()
$287
This Southwest deal was found by Cheapflights users on 8/16. 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 10/72:00 pm -
Nonstop1h 40m
Fri 10/98:55 pm -
1 stop10h 20m
Deal found 8/16![Southwest logo]()
$252
This United Airlines deal was found by Cheapflights users on 8/18. 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 9/186:37 am -
Nonstop2h 00m
Mon 9/216:15 pm -
Nonstop1h 52m
Deal found 8/18![United Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 8/18. 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 10/27:35 pm -
Nonstop1h 40m
Sun 10/410:00 am -
2 stops5h 35m
Deal found 8/18![Southwest logo]()
$289
Last-minute flights from Buffalo to ChicagoDiscover last-minute flight deals from Buffalo to Chicago. Data last updated August 21, 2026 and is based on user searches.
Discover last-minute flight deals from Buffalo to Chicago. Data last updated August 21, 2026 and is based on user searches.
This Trip.com deal was found by Cheapflights users on 8/16. 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.
Tue 9/111:36 am -
1 stop9h 32m
Sat 9/57:44 pm -
1 stop12h 39m
Deal found 8/16![Frontier logo]()
$241
This Delta deal was found by Cheapflights users on 8/18. 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 9/1012:02 pm -
1 stop5h 55m
Mon 9/141:19 pm -
1 stop4h 45m
Deal found 8/18![Delta logo]()
$237
This Southwest deal was found by Cheapflights users on 8/19. 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 9/117:10 pm -
Nonstop1h 35m
Mon 9/146:20 pm -
Nonstop1h 35m
Deal found 8/19![Southwest logo]()
$236
This American Airlines deal was found by Cheapflights users on 8/19. 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 9/117:59 am -
Nonstop2h 11m
Mon 9/147:20 pm -
Nonstop1h 50m
Deal found 8/19![American Airlines logo]()
$236
This American Airlines deal was found by Cheapflights users on 8/18. 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 9/116:56 pm -
Nonstop2h 19m
Tue 9/152:32 pm -
Nonstop1h 46m
Deal found 8/18![American Airlines logo]()
$237
This Southwest deal was found by Cheapflights users on 8/18. 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 9/111:40 pm -
1 stop6h 20m
Tue 9/158:40 am -
Nonstop1h 40m
Deal found 8/18![Southwest logo]()
$246
This Southwest deal was found by Cheapflights users on 8/18. 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 9/158:55 am -
2 stops5h 35m
Tue 9/228:15 am -
2 stops6h 10m
Deal found 8/18![Southwest logo]()
$247
This CheapOair deal was found by Cheapflights users on 8/20. 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.
Wed 9/161:40 pm -
1 stop5h 11m
Sat 9/196:25 am -
1 stop5h 30m
Deal found 8/20![Frontier logo]()
$244
This Frontier deal was found by Cheapflights users on 8/20. 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.
Mon 9/281:40 pm -
1 stop5h 11m
Sat 10/36:25 am -
1 stop5h 25m
Deal found 8/20![Frontier logo]()
$239
This Frontier deal was found by Cheapflights users on 8/20. 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.
Mon 9/281:40 pm -
1 stop5h 43m
Sat 10/36:20 am -
1 stop5h 30m
Deal found 8/20![Frontier logo]()
$239
This Southwest deal was found by Cheapflights users on 8/17. 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 9/2912:00 pm -
1 stop4h 50m
Sat 10/38:10 am -
2 stops8h 25m
Deal found 8/17![Southwest logo]()
$242
This Kiwi.com deal was found by Cheapflights users on 8/19. 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 9/296:51 pm -
1 stop29h 08m
Thu 10/17:28 pm -
1 stop16h 27m
Deal found 8/19![Frontier logo]()
$242
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 August 21, 2026.
Search for one-way flight options from Buffalo to Chicago. Find affordable one-way fares based on user searches. Data last updated August 21, 2026.
This Super.com deal was found by Cheapflights users on 8/17. 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.
Fri 9/111:40 pm -
1 stop5h 11m
Deal found 8/17![Frontier logo]()
$87
This Super.com deal was found by Cheapflights users on 8/18. 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.
Sat 10/171:44 pm -
1 stop5h 47m
Deal found 8/18![Frontier logo]()
$87
This Frontier deal was found by Cheapflights users on 8/16. 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.
Mon 9/141:40 pm -
1 stop5h 11m
Deal found 8/16![Frontier logo]()
$88
This Frontier deal was found by Cheapflights users on 8/17. 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.
Mon 10/261:44 pm -
1 stop5h 47m
Deal found 8/17![Frontier logo]()
$88
This Frontier deal was found by Cheapflights users on 8/20. 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 11/182:00 pm -
1 stop5h 45m
Deal found 8/20![Frontier logo]()
$89
This Frontier deal was found by Cheapflights users on 8/20. 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 9/191:40 pm -
1 stop5h 43m
Deal found 8/20![Frontier logo]()
$90
This Kiwi.com deal was found by Cheapflights users on 8/16. 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 11/161:13 pm -
1 stop23h 49m
Deal found 8/16![Frontier logo]()
$91
This Super.com deal was found by Cheapflights users on 8/19. 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.
Fri 10/91:44 pm -
1 stop10h 59m
Deal found 8/19![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 8/16. 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.
Thu 9/2412:49 pm -
1 stop11h 10m
Deal found 8/16![Frontier logo]()
$92
This Super.com deal was found by Cheapflights users on 8/17. 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 9/89:29 pm -
1 stop26h 30m
Deal found 8/17![Frontier logo]()
$93
This Frontier deal was found by Cheapflights users on 8/17. 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 10/171:44 pm -
1 stop10h 59m
Deal found 8/17![Frontier logo]()
$94
This Mytrip deal was found by Cheapflights users on 8/18. 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.
Thu 9/1712:49 pm -
1 stop11h 10m
Deal found 8/18![Frontier logo]()
$94
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 August 21, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $236 (Southwest) |
One-way from | $87 (Super.com) |
Popular in | March |
Cheapest in | February |
Average price | $349 |
Good round-trip deal | $345 or less |
Good one-way deal | $198 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 7,457,451 searches. Data last updated August 21, 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
Quickest round-trip
BuffaloChicago
BUF Buffalo - MDW Chicago Midway
BUFMDW
Buffalo
Fri 9/11
7:10 pm-7:45 pm
Nonstop1h 35m
Chicago Midway
Mon 9/14
6:20 pm-8:55 pm
Nonstop1h 35m
$236
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Tue 9/15
2:10 pm-8:31 pm
1 stop7h 21m
Chicago O'Hare Intl
Tue 9/22
5:10 pm-11:53 pm
1 stop5h 43m
$237
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Tue 9/29
3:53 pm-8:30 pm
1 stop5h 37m
Chicago O'Hare Intl
Thu 10/1
5:10 pm-11:53 pm
1 stop5h 43m
$237
BuffaloChicago
BUF Buffalo - MDW Chicago Midway
BUFMDW
Buffalo
Sat 10/24
3:40 pm-9:40 pm
2 stops7h 00m
Chicago Midway
Mon 10/26
7:25 am-12:00 pm
1 stop3h 35m
$238
BuffaloChicago
BUF Buffalo - MDW Chicago Midway
BUFMDW
Buffalo
Wed 9/16
3:00 pm-8:50 pm
1 stop6h 50m
Chicago Midway
Sat 9/19
6:35 am-5:40 pm
2 stops10h 05m
$242
BuffaloChicago
BUF Buffalo - MDW Chicago Midway
BUFMDW
Buffalo
Wed 9/16
12:00 pm-7:25 pm
2 stops8h 25m
Chicago Midway
Wed 9/23
6:30 am-12:30 pm
1 stop5h 00m
$242
BuffaloChicago
BUF Buffalo - MDW Chicago Midway
BUFMDW
Buffalo
Fri 10/16
4:30 pm-9:35 pm
1 stop6h 05m
Chicago Midway
Mon 10/19
7:55 am-10:25 am
Nonstop1h 30m
$246
BuffaloChicago
BUF Buffalo - MDW Chicago Midway
BUFMDW
Buffalo
Mon 10/5
7:20 pm-12:20 am
1 stop6h 00m
Chicago Midway
Mon 10/19
7:55 am-10:25 am
Nonstop1h 30m
$246
BuffaloChicago
BUF Buffalo - MDW Chicago Midway
BUFMDW
Buffalo
Wed 10/7
2:00 pm-2:40 pm
Nonstop1h 40m
Chicago Midway
Fri 10/9
8:55 pm-8:15 am
1 stop10h 20m
$252
BuffaloChicago
BUF Buffalo - ORD Chicago O'Hare Intl
BUFORD
Buffalo
Sat 10/17
2:10 pm-7:20 pm
1 stop6h 10m
Chicago O'Hare Intl
Mon 10/19
7:30 pm-11:59 pm
1 stop3h 29m
$256
Showing 1-10 of 38 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 August.
| 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 | |
| Price Accuracy- | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star |
- 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 $433). 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 August 21, 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 August 21, 2026.
The most flights from BUF to CHI are scheduled on a Monday (36 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (15 on average).
How much does it cost to fly round-trip from Buffalo to Chicago?
Airfare is below average for this route at the moment.
Buffalo to Chicago flights typically cost between $260 and $378 in September.The cheapest round-trip price found within the last 5 days was $236 on Southwest (Sep 11-Sep 14).
How far ahead should I book a flight from Buffalo to Chicago?
The best time to book flights from Buffalo to Chicago is 57 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 August 15, 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. Sunday 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 August 21, 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.
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
Comfort
8.0
Reviews
1 / 20
6.0
GoodReza,Jun 2026
TPA - MDW
Entertainment
7.5
Food
7.0
Boarding
8.1
Overall
8.0
Crew
8.6
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
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 August 21, 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 August 21, 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 August 21, 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 7,457,451 searches. Data last updated August 21, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$92 | Average$202 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$145 | Average$349 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$232 | Average$361 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$253 | Average$389 | FlexibilityNo cancel fee | On-time63% |