$100+ Cheap flights from St. Louis (STL) to Massachusetts
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 9/30. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BOS
Sep 24 — Oct 11
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to Massachusetts 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
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Cheapest flights from St. Louis to MassachusettsExplore the most affordable flight options available from St. Louis to Massachusetts. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 25, 2026.
Explore the most affordable flight options available from St. Louis to Massachusetts. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 25, 2026.
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.
Thu 10/84:30 pm -
1 stop20h 51m
Thu 10/153:16 pm -
1 stop8h 57m
Deal found 8/20![Frontier logo]()
$260
This CheapOair deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:19 pm -
1 stop19h 59m
Sun 10/43:16 pm -
1 stop26h 18m
Deal found 8/24![Frontier logo]()
$288
This CheapOair 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:19 pm -
1 stop22h 59m
Sun 10/43:16 pm -
1 stop26h 18m
Deal found 8/21![Frontier logo]()
$294
This Delta deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:35 pm -
1 stop5h 15m
Mon 10/197:06 pm -
1 stop5h 48m
Deal found 8/24![Delta logo]()
$297
This Southwest deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/229:00 pm -
1 stop10h 15m
Mon 10/267:15 pm -
1 stop5h 00m
Deal found 8/24![Southwest logo]()
$302
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.
Mon 10/57:50 pm -
2 stops11h 35m
Thu 10/85:45 pm -
1 stop6h 25m
Deal found 8/21![Southwest logo]()
$308
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 10/306:45 am -
1 stop4h 05m
Wed 11/46:35 am -
1 stop6h 25m
Deal found 8/20![Southwest logo]()
$311
This CheapOair deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/224:30 pm -
1 stop17h 32m
Sun 10/2511:47 am -
1 stop12h 26m
Deal found 8/24![Frontier logo]()
$319
This American Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:00 am -
1 stop8h 08m
Tue 10/67:15 am -
Nonstop3h 14m
Deal found 8/23![American Airlines logo]()
$320
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.
Mon 9/2111:40 am -
1 stop7h 00m
Tue 9/222:45 pm -
2 stops8h 00m
Deal found 8/20![Southwest logo]()
$322
This American Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/311:01 am -
1 stop8h 59m
Sat 10/101:33 pm -
1 stop8h 40m
Deal found 8/23![American Airlines logo]()
$323
This CheapOair deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:19 pm -
1 stop16h 22m
Sun 10/411:53 am -
1 stop29h 41m
Deal found 8/23![Frontier logo]()
$325
Best flights from St. Louis to MassachusettsDiscover carefully curated flight deals from St. Louis to Massachusetts that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.
Discover carefully curated flight deals from St. Louis to Massachusetts that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated August 25, 2026.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:44 pm -
1 stop7h 13m
Wed 9/96:28 pm -
1 stop6h 14m
Deal found 8/21![Delta logo]()
$297
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 10/72:20 pm -
2 stops6h 55m
Wed 10/146:50 am -
1 stop7h 00m
Deal found 8/21![Southwest logo]()
$330
This United Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/157:30 am -
1 stop6h 05m
Tue 10/207:38 am -
1 stop4h 44m
Deal found 8/24![United Airlines logo]()
$332
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/25:19 pm -
1 stop18h 35m
Sun 10/43:16 pm -
2 stops22h 54m
Deal found 8/24![Multiple Airlines logo]()
$410
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:00 am -
1 stop5h 23m
Wed 12/29:39 am -
1 stop4h 51m
Deal found 8/23![Delta logo]()
$325
This Delta deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/33:54 pm -
1 stop7h 05m
Tue 10/65:20 pm -
1 stop7h 34m
Deal found 8/23![Delta logo]()
$325
This Southwest deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/3010:45 am -
2 stops6h 50m
Fri 10/27:30 pm -
1 stop5h 05m
Deal found 8/23![Southwest logo]()
$368
This United Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/101:08 pm -
1 stop7h 25m
Wed 11/118:40 am -
1 stop8h 03m
Deal found 8/23![United Airlines logo]()
$377
This Southwest deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/125:55 am -
Nonstop2h 35m
Wed 10/145:15 am -
Nonstop3h 00m
Deal found 8/24![Southwest logo]()
$369
This Delta deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 10/104:22 pm -
1 stop6h 05m
Sun 10/186:00 am -
1 stop4h 44m
Deal found 8/22![Delta logo]()
$357
This United Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/812:59 pm -
1 stop7h 31m
Sat 9/124:53 pm -
1 stop5h 40m
Deal found 8/24![United Airlines logo]()
$397
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.
Sat 10/174:55 pm -
Nonstop2h 35m
Mon 10/195:25 am -
Nonstop3h 00m
Deal found 8/20![Southwest logo]()
$384
This United Airlines 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/278:30 am -
2 stops9h 04m
Mon 11/25:00 pm -
1 stop5h 35m
Deal found 8/21![United Airlines logo]()
$412
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.
Thu 11/1912:35 pm -
1 stop7h 25m
Tue 12/17:00 am -
2 stops7h 45m
Deal found 8/21![Southwest logo]()
$385
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:35 pm -
1 stop5h 24m
Sun 10/185:23 am -
1 stop5h 21m
Deal found 8/21![Delta logo]()
$393
This United Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/186:00 am -
2 stops7h 02m
Wed 12/26:00 am -
2 stops7h 10m
Deal found 8/24![United Airlines logo]()
$415
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.
Thu 11/1910:30 am -
2 stops8h 10m
Sun 11/222:30 pm -
1 stop7h 30m
Deal found 8/20![Southwest logo]()
$398
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.
Thu 9/1012:28 pm -
2 stops10h 31m
Sat 9/126:10 am -
2 stops6h 53m
Deal found 8/20![United Airlines logo]()
$415
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 10/25:40 pm -
1 stop5h 10m
Sun 10/46:05 am -
2 stops6h 30m
Deal found 8/20![Southwest logo]()
$402
This United Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/207:30 am -
1 stop6h 05m
Sat 10/249:00 am -
1 stop8h 00m
Deal found 8/24![United Airlines logo]()
$422
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 10/74:30 pm -
1 stop4h 40m
Sat 10/105:35 am -
2 stops8h 25m
Deal found 8/21![Southwest logo]()
$409
This United Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/96:00 am -
2 stops7h 32m
Wed 11/113:01 pm -
1 stop7h 34m
Deal found 8/24![United Airlines logo]()
$432
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.
Mon 9/212:45 pm -
2 stops6h 30m
Tue 9/222:45 pm -
2 stops8h 00m
Deal found 8/20![Southwest logo]()
$414
This Southwest deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 9/2411:40 am -
1 stop5h 00m
Mon 9/2810:15 am -
2 stops6h 05m
Deal found 8/22![Southwest logo]()
$436
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.
Fri 10/304:30 pm -
2 stops6h 35m
Sun 11/15:00 am -
1 stop9h 30m
Deal found 8/21![Southwest logo]()
$445
This United deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 9/138:00 am -
2 stops13h 08m
Sat 9/197:45 am -
2 stops14h 48m
Deal found 8/22![Multiple Airlines logo]()
$1,170
Last-minute flights from St. Louis to MassachusettsDiscover last-minute flight deals from St. Louis to Massachusetts. Data last updated August 25, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to Massachusetts. Data last updated August 25, 2026 and is based on user searches.
This Delta 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:44 pm -
1 stop7h 13m
Wed 9/96:28 pm -
1 stop6h 14m
Deal found 8/21![Delta logo]()
$297
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.
Thu 9/106:39 pm -
1 stop15h 12m
Sun 9/1311:53 am -
1 stop29h 41m
Deal found 8/20![Frontier logo]()
$329
This CheapOair deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:19 pm -
1 stop19h 59m
Sun 10/43:16 pm -
1 stop26h 18m
Deal found 8/24![Frontier logo]()
$288
This American Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:00 am -
1 stop6h 09m
Mon 10/55:37 am -
1 stop5h 44m
Deal found 8/24![American Airlines logo]()
$325
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/175:19 pm -
1 stop19h 59m
Sun 10/47:15 am -
2 stops30h 55m
Deal found 8/24![Multiple Airlines logo]()
$331
This United Airlines deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 9/198:00 am -
1 stop5h 29m
Sat 9/266:00 am -
2 stops7h 14m
Deal found 8/22![United Airlines logo]()
$330
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.
Sun 9/205:19 pm -
1 stop19h 59m
Sat 9/266:13 pm -
1 stop23h 21m
Deal found 8/20![Frontier logo]()
$329
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.
Mon 9/2111:40 am -
1 stop7h 00m
Tue 9/222:45 pm -
2 stops8h 00m
Deal found 8/20![Southwest logo]()
$322
This American Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:00 am -
1 stop8h 08m
Tue 10/67:15 am -
Nonstop3h 14m
Deal found 8/23![American Airlines logo]()
$320
This Southwest deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/304:45 pm -
1 stop4h 30m
Mon 10/55:25 am -
Nonstop3h 00m
Deal found 8/24![Southwest logo]()
$327
This American Airlines deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/305:00 am -
1 stop8h 08m
Mon 10/57:23 pm -
1 stop5h 56m
Deal found 8/24![American Airlines logo]()
$330
This United Airlines deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/307:30 am -
1 stop6h 05m
Mon 10/58:05 am -
1 stop5h 08m
Deal found 8/23![United Airlines logo]()
$332
One-way flights from St. Louis to MassachusettsSearch for one-way flight options from St. Louis to Massachusetts. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.
Search for one-way flight options from St. Louis to Massachusetts. Find affordable one-way fares based on user searches. Data last updated August 25, 2026.
This Kiwi.com deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:29 pm -
2 stops19h 26m
Deal found 8/23![Multiple Airlines logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/306:44 pm -
2 stops37h 30m
Deal found 8/24![Multiple Airlines logo]()
$119
This Super.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/104:30 pm -
1 stop17h 32m
Deal found 8/24![Frontier logo]()
$123
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 11/166:44 pm -
1 stop15h 46m
Deal found 8/20![Frontier logo]()
$128
This Kiwi.com deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” 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 9/212:29 pm -
1 stop20h 38m
Deal found 8/22![Frontier logo]()
$129
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/182:29 pm -
2 stops32h 13m
Deal found 8/20![Multiple Airlines logo]()
$129
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/252:29 pm -
2 stops32h 13m
Deal found 8/20![Multiple Airlines logo]()
$130
This Kiwi.com deal was found by Cheapflights users on 8/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/236:35 pm -
2 stops40h 09m
Deal found 8/22![Multiple Airlines logo]()
$131
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/22:29 pm -
2 stops44h 15m
Deal found 8/21![Multiple Airlines logo]()
$133
This Kiwi.com deal was found by Cheapflights users on 8/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/142:29 pm -
1 stop20h 38m
Deal found 8/24![Frontier logo]()
$135
This Kiwi.com deal was found by Cheapflights users on 8/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/244:30 pm -
1 stop17h 32m
Deal found 8/23![Frontier logo]()
$139
This Kiwi.com 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/302:29 pm -
3 stops32h 07m
Deal found 8/20![Multiple Airlines logo]()
$139
Find flight deals from St. Louis to Massachusetts
Keep the following information in mind while searching for St. Louis to Massachusetts flight deals. Data was last updated August 25, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $260 (Frontier) |
One-way from | $100 (Kiwi.com) |
Popular in | February |
Cheapest in | December |
Average price | $486 |
Good round-trip deal | $402 or less |
Good one-way deal | $266 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to Massachusetts 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 25, 2026.
Use the filters below to find and compare flights from St. Louis to Massachusetts that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisAlbany
STL Lambert-St Louis - ALB Albany Intl
STLALB
Lambert-St Louis
Sat 9/5
3:44 pm-11:57 pm
1 stop7h 13m
Albany Intl
Wed 9/9
6:28 pm-11:42 pm
1 stop6h 14m
$297
St. LouisHartford
STL Lambert-St Louis - BDL Hartford Bradley Intl
STLBDL
Lambert-St Louis
Wed 11/18
6:00 am-12:23 pm
1 stop5h 23m
Hartford Bradley Intl
Wed 12/2
9:39 am-1:30 pm
1 stop4h 51m
$325
St. LouisHartford
STL Lambert-St Louis - BDL Hartford Bradley Intl
STLBDL
Lambert-St Louis
Sat 10/3
3:54 pm-11:59 pm
1 stop7h 05m
Hartford Bradley Intl
Tue 10/6
5:20 pm-11:54 pm
1 stop7h 34m
$325
St. LouisHartford
STL Lambert-St Louis - BDL Hartford Bradley Intl
STLBDL
Lambert-St Louis
Wed 10/7
2:20 pm-10:15 pm
2 stops6h 55m
Hartford Bradley Intl
Wed 10/14
6:50 am-12:50 pm
1 stop7h 00m
$330
St. LouisBoston
STL Lambert-St Louis - BOS Boston Logan Intl
STLBOS
Lambert-St Louis
Thu 10/15
7:30 am-2:35 pm
1 stop6h 05m
Boston Logan Intl
Tue 10/20
7:38 am-11:22 am
1 stop4h 44m
$332
St. LouisAlbany
STL Lambert-St Louis - ALB Albany Intl
STLALB
Lambert-St Louis
Sat 10/10
4:22 pm-11:27 pm
1 stop6h 05m
Albany Intl
Sun 10/18
6:00 am-9:44 am
1 stop4h 44m
$357
St. LouisBoston
STL Lambert-St Louis - BOS Boston Logan Intl
STLBOS
Lambert-St Louis
Wed 9/30
10:45 am-6:35 pm
2 stops6h 50m
Boston Logan Intl
Fri 10/2
7:30 pm-11:35 pm
1 stop5h 05m
$368
Quickest round-trip
St. LouisBoston
STL Lambert-St Louis - BOS Boston Logan Intl
STLBOS
Lambert-St Louis
Mon 10/12
5:55 am-9:30 am
Nonstop2h 35m
Boston Logan Intl
Wed 10/14
5:15 am-7:15 am
Nonstop3h 00m
$369
St. LouisAlbany
STL Lambert-St Louis - ALB Albany Intl
STLALB
Lambert-St Louis
Tue 11/10
1:08 pm-9:33 pm
1 stop7h 25m
Albany Intl
Wed 11/11
8:40 am-3:43 pm
1 stop8h 03m
$377
St. LouisBoston
STL Lambert-St Louis - BOS Boston Logan Intl
STLBOS
Lambert-St Louis
Sat 10/17
4:55 pm-8:30 pm
Nonstop2h 35m
Boston Logan Intl
Mon 10/19
5:25 am-7:25 am
Nonstop3h 00m
$384
Showing 1-10 of 56 resultsSorted by cheapest first
Best time to book a flight from St. Louis to Massachusetts
Have a flexible travel schedule? Discover the best time to fly to Massachusetts from St. Louis with our price prediction graph.
STL-BDL
STL-ALB
STL-BOS
STL-MVY
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 St. Louis to Massachusetts
STL-USMA
STL-BDL
STL-ALB
STL-BOS
STL-MVY
What is the cheapest month to book a flight from St. Louis to Massachusetts?
Currently, December is the cheapest month in which you can book a flight from St. Louis to Massachusetts (average of $431). Flying from St. Louis to Massachusetts in February is currently the most expensive (average of $704). 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 STL to MA?
Find hourly flight availability from St. Louis to Massachusetts. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 25, 2026.
It’s optimal to fly from St. Louis to Massachusetts in the afternoon. By choosing this option you can save up to 43% on the cost of your flight, compared to a flight at noon.
How much does it cost to fly round-trip from St. Louis to Massachusetts?
Airfare is below average for this route at the moment.
St. Louis to Massachusetts flights typically cost between $391 and $590 in October.The cheapest round-trip price found within the last 5 days was $319 on Frontier (Oct 22-Oct 25).
How far ahead should I book a flight from St. Louis to Massachusetts?
Booking 67 days in advance of your planned departure date is, on average, the best time to get cheap flights from St. Louis to Massachusetts. The general trend is that the closer you book to the departure date, the more expensive your flight will be.
What is the cheapest day to fly from St. Louis to Massachusetts?
Use this chart to determine the cheapest time to fly round-trip from St. Louis to Massachusetts. Price data was last updated on August 22, 2026.
Travelers seeking maximum savings on their St. Louis to Massachusetts flight should consider departing on Wednesday evenings when fares are most often at their lowest. Tuesday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Reviews of airlines servicing Massachusetts
Get insights into the airlines that provide service to Massachusetts. 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 Massachusetts. Reviews last updated August 25, 2026.
Read through reviews of airlines operating flights from St. Louis to Massachusetts, such as Southwest,United Airlines, andAmerican Airlines. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Comfort
8.0
Overall
8.0
Boarding
8.1
Crew
8.6
Entertainment
7.5
Food
7.0
Reviews
1 / 20
8.0
ExcellentLibby,Jun 2026
TUS - LAS
Related info for your journey
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Alternative routes for St. Louis to Massachusetts
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Complete your trip
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St. Louis and Massachusetts flights
Browse other St. Louis and Massachusetts flight options. Last updated on August 25, 2026.
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St. Louis to Massachusetts flights
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Top 5 airlines flying from St. Louis to Massachusetts
Discover the top 5 airlines that operate flights from St. Louis to Massachusetts. 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 25, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$155 | Average$274 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$264 | Average$477 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$290 | Average$477 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$316 | Average$438 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$334 | Average$512 | FlexibilityNo cancel fee | On-time63% |