$88+ Cheap flights from Chicago (CHI) to Boston (BOS)
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 9/2. Fares are subject to change and may not be available on all flights or dates of travel.
CHI — BOS
Sep 5 — Sep 121
Round-trip
1 adult, Economy
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Find cheap flights from Chicago to Boston 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 Chicago to Boston Logan Intl are usually found in January or February, booked 33 days in advance, depart on a Saturday or Thursday and return on a Friday
Cheap flight deals from Chicago to Boston
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Cheapest flights from Chicago to BostonExplore the most affordable flight options available from Chicago to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.
Explore the most affordable flight options available from Chicago to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 6, 2026.
This Frontier deal was found by Cheapflights users on 8/3. 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 9/57:44 pm -
1 stop12h 25m
Sun 9/612:45 pm -
1 stop8h 19m
Deal found 8/3![Frontier logo]()
$166
This Frontier deal was found by Cheapflights users on 8/1. 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 9/57:44 pm -
1 stop12h 25m
Tue 9/812:45 pm -
1 stop8h 23m
Deal found 8/1![Frontier logo]()
$167
This Super.com deal was found by Cheapflights users on 8/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:50 pm -
1 stop18h 08m
Sat 9/1912:54 pm -
1 stop6h 29m
Deal found 8/2![Frontier logo]()
$172
This Trip.com deal was found by Cheapflights users on 8/4. 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.
Thu 9/103:50 pm -
1 stop18h 01m
Mon 9/1412:54 pm -
1 stop6h 29m
Deal found 8/4![Frontier logo]()
$175
This Priceline deal was found by Cheapflights users on 8/1. 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.
Fri 9/49:10 pm -
1 stop10h 59m
Tue 9/812:45 pm -
1 stop8h 23m
Deal found 8/1![Frontier logo]()
$176
This Trip.com deal was found by Cheapflights users on 8/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:50 pm -
1 stop18h 08m
Mon 9/1412:54 pm -
1 stop6h 29m
Deal found 8/2![Frontier logo]()
$177
This Frontier deal was found by Cheapflights users on 8/4. 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 8/295:59 pm -
1 stop14h 10m
Sun 9/612:45 pm -
1 stop8h 19m
Deal found 8/4![Frontier logo]()
$182
This CheapTickets deal was found by Cheapflights users on 8/5. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:50 pm -
1 stop18h 08m
Sat 9/2612:54 pm -
1 stop6h 29m
Deal found 8/5![Frontier logo]()
$185
This Frontier deal was found by Cheapflights users on 8/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/49:10 pm -
1 stop10h 59m
Mon 9/710:04 am -
1 stop14h 04m
Deal found 8/2![Frontier logo]()
$186
This Priceline deal was found by Cheapflights users on 8/4. 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 9/98:24 pm -
Nonstop2h 45m
Thu 9/1012:54 pm -
1 stop6h 29m
Deal found 8/4![Multiple Airlines logo]()
$187
This Southwest deal was found by Cheapflights users on 8/4. 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 9/1211:25 am -
Nonstop2h 20m
Tue 9/1510:05 am -
Nonstop2h 30m
Deal found 8/4![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 8/5. 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 9/193:10 pm -
Nonstop2h 25m
Sat 9/267:05 am -
Nonstop2h 35m
Deal found 8/5![Southwest logo]()
$217
Best flights from Chicago to BostonDiscover carefully curated flight deals from Chicago to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
Discover carefully curated flight deals from Chicago to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 6, 2026.
This Delta deal was found by Cheapflights users on 8/4. 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 10/104:40 pm -
Nonstop2h 41m
Tue 10/137:40 pm -
Nonstop2h 51m
Deal found 8/4![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 8/1. 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.
Tue 9/156:00 pm -
Nonstop2h 25m
Tue 9/227:30 am -
Nonstop2h 35m
Deal found 8/1![Southwest logo]()
$217
This United Airlines deal was found by Cheapflights users on 8/2. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:00 am -
1 stop4h 35m
Sat 10/178:00 am -
Nonstop2h 56m
Deal found 8/2![United Airlines logo]()
$227
This JetBlue deal was found by Cheapflights users on 8/1. 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 JetBlue is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/218:20 pm -
Nonstop2h 31m
Sat 8/2911:05 am -
Nonstop2h 54m
Deal found 8/1![JetBlue logo]()
$245
This Delta deal was found by Cheapflights users on 8/5. 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 9/197:30 am -
Nonstop2h 31m
Sat 9/261:35 pm -
Nonstop2h 51m
Deal found 8/5![Delta logo]()
$207
This Southwest deal was found by Cheapflights users on 8/3. 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 9/112:50 pm -
Nonstop2h 20m
Wed 9/97:30 am -
Nonstop2h 35m
Deal found 8/3![Southwest logo]()
$231
This United Airlines deal was found by Cheapflights users on 8/3. 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 9/187:55 pm -
Nonstop2h 35m
Mon 9/217:05 am -
Nonstop2h 58m
Deal found 8/3![United Airlines logo]()
$245
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:29 am -
Nonstop2h 36m
Wed 9/167:30 am -
Nonstop2h 54m
Deal found 8/2![Delta logo]()
$231
This Southwest deal was found by Cheapflights users on 8/4. 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 9/96:00 pm -
Nonstop2h 25m
Thu 9/107:40 am -
2 stops5h 40m
Deal found 8/4![Southwest logo]()
$242
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/127:30 am -
Nonstop2h 31m
Mon 9/218:50 pm -
Nonstop2h 42m
Deal found 8/2![Delta logo]()
$231
This Southwest deal was found by Cheapflights users on 8/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/162:00 pm -
2 stops7h 15m
Wed 9/2310:50 am -
1 stop6h 00m
Deal found 8/2![Southwest logo]()
$242
This Southwest deal was found by Cheapflights users on 8/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/198:45 am -
Nonstop2h 30m
Thu 8/206:40 pm -
Nonstop2h 40m
Deal found 8/2![Southwest logo]()
$245
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Fri 8/149:07 am -
Nonstop2h 43m
Fri 8/145:01 pm -
Nonstop2h 59m
Deal found 8/1![United Airlines logo]()
$307
This Southwest deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/66:25 pm -
Nonstop2h 20m
Tue 9/87:15 pm -
Nonstop2h 40m
Deal found 8/5![Southwest logo]()
$250
This KAYAK deal was found by Cheapflights users on 8/4. 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.
Mon 10/197:25 am -
Nonstop2h 35m
Wed 10/217:40 pm -
Nonstop2h 51m
Deal found 8/4![Delta logo]()
$280
This United Airlines deal was found by Cheapflights users on 8/5. 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 8/133:35 pm -
Nonstop2h 44m
Mon 8/176:01 am -
Nonstop2h 59m
Deal found 8/5![United Airlines logo]()
$317
This United Airlines deal was found by Cheapflights users on 8/1. 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.
Sat 8/87:45 pm -
Nonstop2h 36m
Sun 8/97:27 pm -
1 stop5h 04m
Deal found 8/1![United Airlines logo]()
$317
This Southwest deal was found by Cheapflights users on 8/1. 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.
Sat 9/127:40 am -
Nonstop2h 20m
Sun 9/137:00 pm -
Nonstop2h 40m
Deal found 8/1![Southwest logo]()
$267
This Delta deal was found by Cheapflights users on 8/2. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/136:00 am -
1 stop7h 22m
Sun 8/167:30 am -
Nonstop2h 56m
Deal found 8/2![Delta logo]()
$312
This Southwest deal was found by Cheapflights users on 8/5. 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 8/258:40 am -
2 stops6h 20m
Thu 8/2712:40 pm -
Nonstop2h 30m
Deal found 8/5![Southwest logo]()
$270
This Southwest deal was found by Cheapflights users on 8/1. 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.
Tue 9/291:00 pm -
2 stops8h 15m
Thu 10/15:35 am -
2 stops8h 10m
Deal found 8/1![Southwest logo]()
$271
This Southwest deal was found by Cheapflights users on 8/4. 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 9/53:10 pm -
Nonstop2h 25m
Tue 9/87:30 am -
Nonstop2h 35m
Deal found 8/4![Southwest logo]()
$280
Last-minute flights from Chicago to BostonDiscover last-minute flight deals from Chicago to Boston. Data last updated August 6, 2026 and is based on user searches.
Discover last-minute flight deals from Chicago to Boston. Data last updated August 6, 2026 and is based on user searches.
This Frontier deal was found by Cheapflights users on 8/4. 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 8/295:59 pm -
1 stop14h 10m
Sun 9/612:45 pm -
1 stop8h 19m
Deal found 8/4![Frontier logo]()
$182
This Priceline deal was found by Cheapflights users on 8/1. 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.
Fri 9/49:10 pm -
1 stop10h 59m
Tue 9/812:45 pm -
1 stop8h 23m
Deal found 8/1![Frontier logo]()
$176
This Frontier deal was found by Cheapflights users on 8/2. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/49:10 pm -
1 stop10h 59m
Mon 9/710:04 am -
1 stop14h 04m
Deal found 8/2![Frontier logo]()
$186
This Frontier deal was found by Cheapflights users on 8/3. 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 9/57:44 pm -
1 stop12h 25m
Tue 9/812:45 pm -
1 stop8h 23m
Deal found 8/3![Frontier logo]()
$166
This Priceline deal was found by Cheapflights users on 8/4. 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 9/98:24 pm -
Nonstop2h 45m
Thu 9/1012:54 pm -
1 stop6h 29m
Deal found 8/4![Multiple Airlines logo]()
$187
This Trip.com deal was found by Cheapflights users on 8/4. 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.
Thu 9/103:50 pm -
1 stop18h 01m
Mon 9/1412:54 pm -
1 stop6h 29m
Deal found 8/4![Frontier logo]()
$175
This Super.com deal was found by Cheapflights users on 8/2. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:50 pm -
1 stop18h 08m
Sat 9/1912:54 pm -
1 stop6h 29m
Deal found 8/2![Frontier logo]()
$172
This Trip.com deal was found by Cheapflights users on 8/2. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/123:50 pm -
1 stop18h 08m
Mon 9/1412:54 pm -
1 stop6h 29m
Deal found 8/2![Frontier logo]()
$177
This Southwest deal was found by Cheapflights users on 8/4. 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 9/1211:25 am -
Nonstop2h 20m
Tue 9/1510:05 am -
Nonstop2h 30m
Deal found 8/4![Southwest logo]()
$207
This Southwest deal was found by Cheapflights users on 8/4. 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 9/158:40 am -
2 stops6h 20m
Sat 9/197:05 am -
Nonstop2h 35m
Deal found 8/4![Southwest logo]()
$222
This CheapTickets deal was found by Cheapflights users on 8/5. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/193:50 pm -
1 stop18h 08m
Sat 9/2612:54 pm -
1 stop6h 29m
Deal found 8/5![Frontier logo]()
$185
This Southwest deal was found by Cheapflights users on 8/5. 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 9/193:10 pm -
Nonstop2h 25m
Sat 9/267:05 am -
Nonstop2h 35m
Deal found 8/5![Southwest logo]()
$217
One-way flights from Chicago to BostonSearch for one-way flight options from Chicago to Boston. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
Search for one-way flight options from Chicago to Boston. Find affordable one-way fares based on user searches. Data last updated August 6, 2026.
This Super.com deal was found by Cheapflights users on 8/1. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:44 pm -
1 stop12h 25m
Deal found 8/1![Frontier logo]()
$88
This CheapTickets deal was found by Cheapflights users on 8/2. 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 CheapTickets is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/183:50 pm -
1 stop18h 01m
Deal found 8/2![Frontier logo]()
$90
This Trip.com deal was found by Cheapflights users on 8/4. 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.
Wed 9/93:50 pm -
1 stop17h 32m
Deal found 8/4![Frontier logo]()
$91
This Jetabroad deal was found by Cheapflights users on 8/5. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Jetabroad is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/103:50 pm -
1 stop18h 01m
Deal found 8/5![Frontier logo]()
$96
This Frontier deal was found by Cheapflights users on 8/1. 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.
Sun 10/119:33 pm -
1 stop12h 19m
Deal found 8/1![Frontier logo]()
$99
This Trip.com deal was found by Cheapflights users on 8/1. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/2511:15 am -
1 stop22h 36m
Deal found 8/1![Frontier logo]()
$101
This Cheapflightsfares deal was found by Cheapflights users on 8/4. 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.
Sat 9/269:38 am -
Nonstop2h 28m
Deal found 8/4![JetBlue logo]()
$102
This Southwest deal was found by Cheapflights users on 8/4. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:10 am -
Nonstop2h 20m
Deal found 8/4![Southwest logo]()
$104
This Southwest deal was found by Cheapflights users on 8/3. 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 9/96:40 am -
Nonstop2h 15m
Deal found 8/3![Southwest logo]()
$109
This Southwest deal was found by Cheapflights users on 8/2. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/112:35 pm -
Nonstop2h 20m
Deal found 8/2![Southwest logo]()
$118
This Kiwi.com deal was found by Cheapflights users on 8/3. 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 11/21:26 pm -
1 stop20h 16m
Deal found 8/3![Allegiant Air logo]()
$121
This Southwest deal was found by Cheapflights users on 8/3. 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 8/175:45 am -
Nonstop2h 15m
Deal found 8/3![Southwest logo]()
$123
Find flight deals from Chicago to Boston
Discover tips and strategies to find the most affordable flight options for your journey from Chicago (CHI) to Boston (BOS). 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 6, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $166 (Frontier) |
One-way from | $88 (Super.com) |
Popular in | July |
Cheapest in | January |
Average price | $266 |
Good round-trip deal | $221 or less |
Good one-way deal | $143 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Chicago to Boston 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 August 6, 2026.
Use the filters below to find and compare flights from Chicago to Boston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ChicagoBoston
ORD Chicago O'Hare Intl - BOS Boston Logan Intl
ORDBOS
Chicago O'Hare Intl
Sat 10/10
4:40 pm-8:21 pm
Nonstop2h 41m
Boston Logan Intl
Tue 10/13
7:40 pm-9:31 pm
Nonstop2h 51m
$207
ChicagoBoston
ORD Chicago O'Hare Intl - BOS Boston Logan Intl
ORDBOS
Chicago O'Hare Intl
Sat 9/19
7:30 am-11:01 am
Nonstop2h 31m
Boston Logan Intl
Sat 9/26
1:35 pm-3:26 pm
Nonstop2h 51m
$207
ChicagoBoston
MDW Chicago Midway - BOS Boston Logan Intl
MDWBOS
Chicago Midway
Tue 9/15
6:00 pm-9:25 pm
Nonstop2h 25m
Boston Logan Intl
Tue 9/22
7:30 am-9:05 am
Nonstop2h 35m
$217
ChicagoBoston
ORD Chicago O'Hare Intl - BOS Boston Logan Intl
ORDBOS
Chicago O'Hare Intl
Tue 10/6
9:00 am-2:35 pm
1 stop4h 35m
Boston Logan Intl
Sat 10/17
8:00 am-9:56 am
Nonstop2h 56m
$227
Quickest round-trip
ChicagoBoston
MDW Chicago Midway - BOS Boston Logan Intl
MDWBOS
Chicago Midway
Tue 9/1
12:50 pm-4:10 pm
Nonstop2h 20m
Boston Logan Intl
Wed 9/9
7:30 am-9:05 am
Nonstop2h 35m
$231
ChicagoBoston
ORD Chicago O'Hare Intl - BOS Boston Logan Intl
ORDBOS
Chicago O'Hare Intl
Thu 9/10
10:29 am-2:05 pm
Nonstop2h 36m
Boston Logan Intl
Wed 9/16
7:30 am-9:24 am
Nonstop2h 54m
$231
ChicagoBoston
ORD Chicago O'Hare Intl - BOS Boston Logan Intl
ORDBOS
Chicago O'Hare Intl
Sat 9/12
7:30 am-11:01 am
Nonstop2h 31m
Boston Logan Intl
Mon 9/21
8:50 pm-10:32 pm
Nonstop2h 42m
$231
ChicagoBoston
MDW Chicago Midway - BOS Boston Logan Intl
MDWBOS
Chicago Midway
Wed 9/9
6:00 pm-9:25 pm
Nonstop2h 25m
Boston Logan Intl
Thu 9/10
7:40 am-12:20 pm
2 stops5h 40m
$242
ChicagoBoston
MDW Chicago Midway - BOS Boston Logan Intl
MDWBOS
Chicago Midway
Wed 9/16
2:00 pm-10:15 pm
2 stops7h 15m
Boston Logan Intl
Wed 9/23
10:50 am-3:50 pm
1 stop6h 00m
$242
ChicagoBoston
ORD Chicago O'Hare Intl - BOS Boston Logan Intl
ORDBOS
Chicago O'Hare Intl
Fri 8/21
8:20 pm-11:51 pm
Nonstop2h 31m
Boston Logan Intl
Sat 8/29
11:05 am-12:59 pm
Nonstop2h 54m
$245
Showing 1-10 of 41 resultsSorted by cheapest first
Compare providers for flights from Chicago to Boston
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 Chicago to Boston in August.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy1 star | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on Chicago-Boston flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Chicago-Boston flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Chicago-Boston flight searches over the past month and is updated monthly.
- Most trusted provider: When it comes to deals on Chicago-Boston 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 Chicago-Boston 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 Chicago to Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from Chicago with our price prediction graph.
CHI-BOS
ORD-BOS
MDW-BOS
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 Chicago to Boston
CHI-BOS
ORD-BOS
MDW-BOS
What is the cheapest month to book a flight from Chicago to Boston?
Currently, January is the cheapest month in which you can book a flight from Chicago to Boston (average of $199). Flying from Chicago to Boston in June is currently the most expensive (average of $280). 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 CHI to BOS?
Find hourly flight availability from Chicago to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 6, 2026.
It’s typically best to fly out from Chicago to Boston in the evening. Doing so could potentially save you 10% on the flight price compared to flying in the afternoon, which is usually more expensive.
Weekly flight availability from Chicago to Boston
Explore weekly flight availability from Chicago to Boston. 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 6, 2026.
The most flights from CHI to BOS are scheduled on a Tuesday (81 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (18 on average).
How much does it cost to fly round-trip from Chicago to Boston?
Airfare is below average for this route at the moment.
Chicago to Boston flights typically cost between $203 and $347 in September.The cheapest round-trip price found within the last 5 days was $166 on Frontier (Sep 5-Sep 8).
How often are flights from Chicago to Boston delayed?
About 26% of weekly flights between Chicago and Boston have experienced delays in the past year, with the average delay time being 150 minutes.
What is the most punctual flight time for Chicago to Boston flights?
Historically, flights departing in the morning are less likely to be delayed, whereas flights leaving in the early afternoon tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Saturday tends to have the lowest number of delays on this route, whereas Monday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on Chicago to Boston flights?
Over the last year, Delta have had the lowest number of delays on this route, with just 21% of flights being delayed.
How far ahead should I book a flight from Chicago to Boston?
The price you pay for your flight from Chicago to Boston may vary depending on when you book. For the best chance of a lower fare, look to book 60 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.
What is the cheapest day to fly from Chicago to Boston?
Use this chart to determine the cheapest time to fly round-trip from Chicago to Boston. Price data was last updated on August 1, 2026.
Travelers seeking maximum savings on their Chicago to Boston flight should consider departing on Thursday afternoons 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.
The best insider tips for Chicago to Boston flights
AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your Chicago to Boston trip
Our travel experts
Reviews of airlines servicing Boston
Get insights into the airlines that provide service to Boston. 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 Boston. Reviews last updated August 6, 2026.
See what other customers who have flown with Southwest,Delta, andUnited Airlines from Chicago to Boston have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Overall
8.0
Entertainment
7.5
Food
7.0
Crew
8.6
Boarding
8.1
Comfort
8.0
Reviews
1 / 20
2.0
MediocreBhoopal,Nov 2024
STL - BOS
Related info for your journey
Find useful and relevant information for your journey from Chicago to Boston. 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 Boston?
Book flights to Boston if you plan to visit one of these locationsWaltham
Randolph
Cambridge
Concord
Brockton
Seekonk
Cranston
Dedham
Warwick
Peabody
Hampton Beach
Auburn
York Beach
Chelsea
Londonderry
Swansea
Fitchburg
North Falmouth
Braintree
Revere
Browse thousands of different options on Cheapflights for your next trip
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Other flights to Boston
Explore flights to Boston departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 6, 2026.
Complete your trip
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Search flights from Chicago to Boston by cabin class
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Chicago and Boston flights
Browse other Chicago and Boston flight options. Last updated on August 6, 2026.
Other flights from Chicago
Browse through other flights departing from Chicago. Flights are based on user searches made on Cheapflights and were last updated on August 6, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Top 5 airlines flying from Chicago to Boston
Discover the top 5 airlines that operate flights from Chicago to Boston. 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 August 6, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$70 | Average$181 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$89 | Average$239 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$126 | Average$317 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$128 | Average$282 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$137 | Average$240 | FlexibilityNo cancel fee | On-time71% |