$98+ Cheap flights from Massachusetts to St. Louis (STL)
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 10/11. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
Sep 14 — Sep 211
Round-trip
1 adult, Economy
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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
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Cheapest flights from Massachusetts to St. LouisExplore the most affordable flight options available from Massachusetts to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 15, 2026.
Explore the most affordable flight options available from Massachusetts to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 15, 2026.
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:10 am -
1 stop4h 47m
Tue 9/298:00 am -
1 stop6h 04m
Deal found 8/12![United Airlines logo]()
$234
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:05 pm -
1 stop5h 05m
Wed 9/166:30 am -
1 stop4h 05m
Deal found 8/10![Southwest logo]()
$239
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:15 pm -
1 stop5h 00m
Tue 11/36:35 am -
1 stop4h 35m
Deal found 8/12![Southwest logo]()
$243
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:05 pm -
2 stops7h 40m
Tue 9/296:30 am -
2 stops6h 50m
Deal found 8/12![Southwest logo]()
$250
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:23 am -
1 stop5h 21m
Tue 10/136:05 pm -
1 stop4h 27m
Deal found 8/12![Delta logo]()
$255
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am -
2 stops7h 10m
Sat 9/267:50 am -
1 stop4h 30m
Deal found 8/12![Southwest logo]()
$260
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:00 am -
1 stop5h 51m
Sat 10/174:22 pm -
1 stop6h 10m
Deal found 8/12![Delta logo]()
$262
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/127:05 pm -
1 stop6h 25m
Wed 10/1411:25 am -
1 stop5h 20m
Deal found 8/12![Southwest logo]()
$263
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/47:00 am -
2 stops7h 45m
Sat 11/75:45 am -
2 stops8h 25m
Deal found 8/13![Southwest logo]()
$265
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/51:20 pm -
1 stop8h 40m
Sat 11/75:45 am -
2 stops8h 25m
Deal found 8/12![Southwest logo]()
$266
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 am -
1 stop5h 55m
Mon 9/285:59 pm -
1 stop4h 13m
Deal found 8/10![Delta logo]()
$269
This American Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/810:34 am -
1 stop6h 23m
Wed 10/145:00 am -
1 stop5h 43m
Deal found 8/11![American Airlines logo]()
$271
Best flights from Massachusetts to St. LouisDiscover carefully curated flight deals from Massachusetts to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 15, 2026.
Discover carefully curated flight deals from Massachusetts to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 15, 2026.
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:15 am -
1 stop5h 40m
Mon 9/285:30 pm -
1 stop4h 29m
Deal found 8/13![Delta logo]()
$239
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/93:05 pm -
1 stop7h 10m
Wed 9/166:30 am -
1 stop4h 05m
Deal found 8/10![Southwest logo]()
$240
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/113:00 pm -
2 stops8h 24m
Sat 11/148:30 am -
1 stop4h 45m
Deal found 8/11![United Airlines logo]()
$260
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/307:15 pm -
1 stop5h 00m
Tue 11/36:35 am -
1 stop4h 35m
Deal found 8/12![Southwest logo]()
$243
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/197:11 pm -
1 stop5h 43m
Wed 10/2112:00 pm -
1 stop5h 04m
Deal found 8/10![Delta logo]()
$262
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:15 am -
1 stop5h 40m
Fri 9/184:59 pm -
1 stop5h 58m
Deal found 8/11![Delta logo]()
$271
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am -
1 stop6h 57m
Sun 9/278:00 am -
1 stop6h 04m
Deal found 8/13![United Airlines logo]()
$323
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/69:30 am -
2 stops6h 30m
Fri 10/99:00 pm -
1 stop10h 45m
Deal found 8/11![Southwest logo]()
$302
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/105:23 am -
1 stop5h 21m
Fri 10/162:25 pm -
1 stop6h 58m
Deal found 8/12![Delta logo]()
$296
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/86:10 am -
2 stops6h 47m
Wed 9/98:00 am -
1 stop5h 29m
Deal found 8/14![United Airlines logo]()
$330
This Southwest deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:35 pm -
1 stop6h 40m
Fri 10/235:00 am -
1 stop6h 35m
Deal found 8/14![Southwest logo]()
$311
This United Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/96:10 am -
2 stops9h 05m
Sat 9/128:40 am -
1 stop4h 35m
Deal found 8/14![United Airlines logo]()
$330
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/86:10 am -
1 stop5h 41m
Sat 10/104:22 pm -
1 stop6h 05m
Deal found 8/11![Delta logo]()
$309
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/234:25 pm -
2 stops7h 45m
Mon 10/265:25 am -
1 stop4h 35m
Deal found 8/11![Southwest logo]()
$312
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 am -
1 stop5h 55m
Mon 9/285:59 pm -
1 stop4h 13m
Deal found 8/14![Delta logo]()
$325
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/226:00 am -
1 stop5h 05m
Sun 10/255:45 am -
1 stop4h 10m
Deal found 8/13![Southwest logo]()
$336
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:05 am -
1 stop7h 08m
Mon 9/281:29 pm -
2 stops9h 30m
Deal found 8/13![United Airlines logo]()
$371
This Delta deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/187:00 am -
1 stop5h 15m
Sun 11/226:00 pm -
1 stop4h 42m
Deal found 8/13![Delta logo]()
$336
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:05 pm -
1 stop5h 05m
Sun 9/206:00 am -
1 stop5h 20m
Deal found 8/10![Southwest logo]()
$344
This United Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/229:00 am -
1 stop7h 38m
Thu 9/247:30 am -
1 stop6h 05m
Deal found 8/11![United Airlines logo]()
$391
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/27:30 am -
1 stop4h 50m
Sat 9/54:15 pm -
Nonstop2h 40m
Deal found 8/12![Southwest logo]()
$377
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/175:45 am -
2 stops9h 31m
Mon 10/191:29 pm -
2 stops8h 16m
Deal found 8/12![United Airlines logo]()
$459
This Southwest deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/55:50 am -
1 stop7h 25m
Wed 10/78:30 am -
2 stops7h 40m
Deal found 8/14![Southwest logo]()
$385
This Delta deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/44:25 pm -
1 stop8h 33m
Mon 9/76:00 am -
1 stop5h 45m
Deal found 8/14![Delta logo]()
$428
This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:35 am -
1 stop5h 55m
Sat 10/177:20 am -
2 stops7h 00m
Deal found 8/13![Southwest logo]()
$399
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 8/228:55 am -
1 stop6h 38m
Tue 9/112:52 pm -
1 stop5h 43m
Deal found 8/11![Delta logo]()
$464
This Southwest deal was found by Cheapflights users on 8/15. Clicking the “Pick Dates” 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 9/185:00 am -
Nonstop2h 50m
Sun 9/208:05 pm -
Nonstop2h 40m
Deal found 8/15![Southwest logo]()
$404
This Southwest deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/15:35 am -
2 stops7h 00m
Sun 10/44:35 pm -
1 stop6h 30m
Deal found 8/14![Southwest logo]()
$409
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/273:48 pm -
1 stop5h 43m
Mon 8/319:25 am -
1 stop4h 43m
Deal found 8/11![Delta logo]()
$566
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/155:35 am -
Nonstop2h 50m
Thu 9/1711:40 am -
1 stop7h 00m
Deal found 8/10![Southwest logo]()
$435
Last-minute flights from Massachusetts to St. LouisDiscover last-minute flight deals from Massachusetts to St. Louis. Data last updated August 15, 2026 and is based on user searches.
Discover last-minute flight deals from Massachusetts to St. Louis. Data last updated August 15, 2026 and is based on user searches.
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/311:54 pm -
1 stop4h 59m
Thu 9/37:00 am -
1 stop4h 48m
Deal found 8/10![Delta logo]()
$281
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/316:20 pm -
1 stop4h 45m
Tue 9/17:15 am -
2 stops7h 50m
Deal found 8/10![Southwest logo]()
$288
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/511:45 am -
1 stop4h 45m
Tue 9/86:30 am -
1 stop4h 30m
Deal found 8/11![Southwest logo]()
$276
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/106:05 pm -
1 stop5h 05m
Wed 9/166:30 am -
1 stop4h 05m
Deal found 8/10![Southwest logo]()
$239
This Southwest deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1010:15 am -
2 stops6h 05m
Mon 9/142:20 pm -
1 stop7h 00m
Deal found 8/10![Southwest logo]()
$282
This American Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:30 am -
1 stop5h 45m
Sat 9/195:00 am -
1 stop6h 09m
Deal found 8/12![American Airlines logo]()
$255
This Delta deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:15 am -
1 stop5h 40m
Fri 9/184:59 pm -
1 stop5h 58m
Deal found 8/11![Delta logo]()
$271
This United Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:10 am -
2 stops6h 47m
Tue 9/2212:59 pm -
1 stop7h 39m
Deal found 8/13![United Airlines logo]()
$291
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/228:10 am -
1 stop4h 47m
Tue 9/298:00 am -
1 stop6h 04m
Deal found 8/12![United Airlines logo]()
$234
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/223:05 pm -
2 stops7h 40m
Tue 9/296:30 am -
2 stops6h 50m
Deal found 8/12![Southwest logo]()
$250
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/236:00 am -
2 stops7h 10m
Sat 9/267:50 am -
1 stop4h 30m
Deal found 8/12![Southwest logo]()
$260
This Delta deal was found by Cheapflights users on 8/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/246:00 am -
1 stop5h 55m
Mon 9/285:59 pm -
1 stop4h 13m
Deal found 8/10![Delta logo]()
$269
One-way flights from Massachusetts to St. LouisSearch for one-way flight options from Massachusetts to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 15, 2026.
Search for one-way flight options from Massachusetts to St. Louis. Find affordable one-way fares based on user searches. Data last updated August 15, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/118:55 pm -
2 stops13h 45m
Deal found 8/11![Frontier logo]()
$98
This Super.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/1011:17 am -
1 stop7h 37m
Deal found 8/11![Frontier logo]()
$107
This Frontier deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/111:17 am -
1 stop7h 37m
Deal found 8/13![Frontier logo]()
$108
This Super.com deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/39:36 am -
1 stop8h 46m
Deal found 8/12![Frontier logo]()
$113
This Frontier deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/1210:11 am -
1 stop10h 28m
Deal found 8/11![Frontier logo]()
$114
This Super.com deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 8/319:36 am -
1 stop8h 46m
Deal found 8/13![Frontier logo]()
$119
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/126:00 am -
1 stop4h 29m
Deal found 8/12![Delta logo]()
$120
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/119:15 am -
2 stops25h 25m
Deal found 8/11![Frontier logo]()
$122
This Priceline deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/233:16 pm -
1 stop8h 57m
Deal found 8/14![Frontier logo]()
$125
This Southwest deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/128:30 am -
2 stops6h 05m
Deal found 8/11![Southwest logo]()
$125
This Kiwi.com deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/1512:52 pm -
2 stops31h 25m
Deal found 8/11![Frontier logo]()
$126
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/176:00 am -
1 stop5h 55m
Deal found 8/12![Delta logo]()
$128
Find flight deals from Massachusetts to St. Louis
Keep the following information in mind while searching for Massachusetts to St. Louis flight deals. Data was last updated August 15, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $234 (United Airlines) |
One-way from | $98 (Kiwi.com) |
Popular in | July |
Cheapest in | January |
Average price | $464 |
Good round-trip deal | $380 or less |
Good one-way deal | $251 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Massachusetts to St. Louis 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 15, 2026.
Use the filters below to find and compare flights from Massachusetts to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
AlbanySt. Louis
ALB Albany Intl - STL Lambert-St Louis
ALBSTL
Albany Intl
Thu 9/24
6:15 am-10:55 am
1 stop5h 40m
Lambert-St Louis
Mon 9/28
5:30 pm-10:59 pm
1 stop4h 29m
$239
AlbanySt. Louis
ALB Albany Intl - STL Lambert-St Louis
ALBSTL
Albany Intl
Wed 9/9
3:05 pm-9:15 pm
1 stop7h 10m
Lambert-St Louis
Wed 9/16
6:30 am-11:35 am
1 stop4h 05m
$240
AlbanySt. Louis
ALB Albany Intl - STL Lambert-St Louis
ALBSTL
Albany Intl
Fri 10/30
7:15 pm-11:15 pm
1 stop5h 00m
Lambert-St Louis
Tue 11/3
6:35 am-12:10 pm
1 stop4h 35m
$243
HartfordSt. Louis
BDL Hartford Bradley Intl - STL Lambert-St Louis
BDLSTL
Hartford Bradley Intl
Wed 11/11
3:00 pm-10:24 pm
2 stops8h 24m
Lambert-St Louis
Sat 11/14
8:30 am-2:15 pm
1 stop4h 45m
$260
HartfordSt. Louis
BDL Hartford Bradley Intl - STL Lambert-St Louis
BDLSTL
Hartford Bradley Intl
Mon 10/19
7:11 pm-11:54 pm
1 stop5h 43m
Lambert-St Louis
Wed 10/21
12:00 pm-6:04 pm
1 stop5h 04m
$262
AlbanySt. Louis
ALB Albany Intl - STL Lambert-St Louis
ALBSTL
Albany Intl
Thu 9/17
6:15 am-10:55 am
1 stop5h 40m
Lambert-St Louis
Fri 9/18
4:59 pm-11:57 pm
1 stop5h 58m
$271
HartfordSt. Louis
BDL Hartford Bradley Intl - STL Lambert-St Louis
BDLSTL
Hartford Bradley Intl
Sat 10/10
5:23 am-9:44 am
1 stop5h 21m
Lambert-St Louis
Fri 10/16
2:25 pm-10:23 pm
1 stop6h 58m
$296
AlbanySt. Louis
ALB Albany Intl - STL Lambert-St Louis
ALBSTL
Albany Intl
Tue 10/6
9:30 am-3:00 pm
2 stops6h 30m
Lambert-St Louis
Fri 10/9
9:00 pm-8:45 am
1 stop10h 45m
$302
AlbanySt. Louis
ALB Albany Intl - STL Lambert-St Louis
ALBSTL
Albany Intl
Thu 10/8
6:10 am-10:51 am
1 stop5h 41m
Lambert-St Louis
Sat 10/10
4:22 pm-11:27 pm
1 stop6h 05m
$309
AlbanySt. Louis
ALB Albany Intl - STL Lambert-St Louis
ALBSTL
Albany Intl
Mon 10/5
5:35 pm-11:15 pm
1 stop6h 40m
Lambert-St Louis
Fri 10/23
5:00 am-12:35 pm
1 stop6h 35m
$311
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Massachusetts to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from Massachusetts with our price prediction graph.
ALB-STL
BDL-STL
BOS-STL
MVY-STL
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 Massachusetts to St. Louis
USMA-STL
ALB-STL
BDL-STL
BOS-STL
MVY-STL
What is the cheapest month to book a flight from Massachusetts to St. Louis?
Currently, January is the cheapest month in which you can book a flight from Massachusetts to St. Louis (average of $408). Flying from Massachusetts to St. Louis in July is currently the most expensive (average of $580). 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 MA to STL?
Find hourly flight availability from Massachusetts to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 15, 2026.
When flying from Massachusetts to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 10% versus a flight in the afternoon.
How much does it cost to fly round-trip from Massachusetts to St. Louis?
Airfare is below average for this route at the moment.
Massachusetts to St. Louis flights typically cost between $366 and $594 in September.The cheapest round-trip price found within the last 5 days was $341 on Frontier (Sep 25-Sep 30).
How far ahead should I book a flight from Massachusetts to St. Louis?
The best time to book flights from Massachusetts to St. Louis is 50 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 Massachusetts to St. Louis?
Use this chart to determine the cheapest time to fly round-trip from Massachusetts to St. Louis. Price data was last updated on August 8, 2026.
Travelers seeking maximum savings on their Massachusetts to St. Louis flight should consider departing on Monday 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.
Related info for your journey
Find useful and relevant information for your journey from Massachusetts to St. Louis. 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 St. Louis?
Book flights to St. Louis if you plan to visit one of these locationsEdwardsville
Fairview Heights
O'Fallon
Fenton
Swansea
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Farmington
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Massachusetts and St. Louis flights
Browse other Massachusetts and St. Louis flight options. Last updated on August 15, 2026.
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on August 15, 2026.
Massachusetts to St. Louis flights
Consider these flights traveling from Massachusetts to St. Louis.
Top 5 airlines flying from Massachusetts to St. Louis
Discover the top 5 airlines that operate flights from Massachusetts to St. Louis. 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 15, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$90 | Average$255 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$618 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$302 | Average$512 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$327 | Average$437 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$337 | Average$509 | FlexibilityNo cancel fee | On-time63% |