$115+ 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 7/21. Fares are subject to change and may not be available on all flights or dates of travel.
BOS — STL
jun. 29 — jul. 61
Round-trip
1 adult, Economy
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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 mayo 30, 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 mayo 30, 2026.
This Booking.com deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/1512:27 pm
BDL
- STL
1 stop12h 32m
Frontier
mar. 7/214:09 pm
STL
- BDL
1 stop18h 23m
Frontier
Deal found 5/29![Frontier logo]()
$242
This Frontier deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
lun. 6/2212:38 pm
BDL
- STL
1 stop12h 11m
Frontier
mar. 6/304:17 pm
STL
- BDL
1 stop18h 52m
Frontier
Deal found 5/25![Frontier logo]()
$249
This Mytrip deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/812:27 pm
BDL
- STL
1 stop12h 32m
Frontier
dom. 7/124:09 pm
STL
- BDL
1 stop18h 23m
Frontier
Deal found 5/28![Frontier logo]()
$259
This Booking.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/1512:38 pm
BDL
- STL
1 stop12h 11m
Frontier
mar. 6/234:17 pm
STL
- BDL
1 stop18h 52m
Frontier
Deal found 5/25![Frontier logo]()
$261
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/267:25 am
ALB
- STL
1 stop4h 40m
Southwest
mar. 9/295:55 am
STL
- ALB
1 stop5h 20m
Southwest
Deal found 5/28![Southwest logo]()
$276
This Booking.com deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/2912:38 pm
BDL
- STL
1 stop12h 11m
Frontier
jue. 7/24:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/27![Frontier logo]()
$280
This Booking.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/1712:54 pm
BDL
- STL
1 stop11h 55m
Frontier
dom. 6/214:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/25![Frontier logo]()
$282
This Booking.com deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/48:05 pm
BDL
- STL
1 stop28h 54m
Frontier
mar. 7/74:09 pm
STL
- BDL
1 stop18h 23m
Frontier
Deal found 5/26![Frontier logo]()
$296
This Mytrip deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/2212:38 pm
BDL
- STL
1 stop12h 11m
Frontier
jue. 6/254:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/27![Frontier logo]()
$299
This Booking.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/1212:38 pm
BDL
- STL
1 stop12h 11m
Frontier
jue. 6/184:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/25![Frontier logo]()
$301
This Booking.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/1012:39 pm
BDL
- STL
1 stop12h 10m
Frontier
dom. 6/144:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/25![Frontier logo]()
$302
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/155:06 pm
BDL
- STL
1 stop4h 36m
Delta
lun. 8/176:25 pm
STL
- BDL
1 stop4h 26m
Delta
Deal found 5/29![Delta logo]()
$303
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 mayo 30, 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 mayo 30, 2026.
This Southwest deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
mié. 8/193:05 pm
ALB
- STL
1 stop7h 05m
Southwest
sáb. 8/226:30 am
STL
- ALB
1 stop7h 45m
Southwest
Deal found 5/26![Southwest logo]()
$316
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/2512:00 pm
ALB
- STL
1 stop4h 38m
United Airlines
mié. 8/268:00 am
STL
- ALB
1 stop6h 05m
United Airlines
Deal found 5/29![United Airlines logo]()
$337
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/85:30 am
BOS
- STL
1 stop5h 02m
Delta
mar. 6/912:35 pm
STL
- BOS
1 stop4h 58m
Delta
Deal found 5/27![Delta logo]()
$352
This American Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/1010:41 am
MVY
- STL
1 stop7h 21m
American Airlines
dom. 7/126:14 am
STL
- MVY
1 stop4h 38m
American Airlines
Deal found 5/28![American Airlines logo]()
$456
This Kiwi.com deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/196:00 am
BOS
- STL
1 stop27h 52m
Frontier
dom. 6/216:31 pm
STL
- BOS
1 stop12h 21m
Frontier
Deal found 5/29![Frontier logo]()
$457
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 7/142:35 pm
BDL
- STL
1 stop5h 40m
Southwest
mié. 7/225:40 am
STL
- BDL
2 stops7h 20m
Southwest
Deal found 5/27![Southwest logo]()
$340
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
mié. 7/292:00 pm
BOS
- STL
1 stop7h 35m
Delta
lun. 8/35:23 pm
STL
- BOS
1 stop7h 02m
Delta
Deal found 5/26![Delta logo]()
$352
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/154:30 pm
BDL
- STL
1 stop7h 45m
Southwest
mar. 7/213:15 pm
STL
- BDL
2 stops6h 35m
Southwest
Deal found 5/29![Southwest logo]()
$352
This United Airlines deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/256:09 am
BDL
- STL
1 stop7h 02m
United Airlines
mar. 6/306:00 am
STL
- BDL
2 stops7h 06m
United Airlines
Deal found 5/29![United Airlines logo]()
$392
This Delta deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
vie. 9/256:25 am
ALB
- STL
1 stop7h 58m
Delta
mar. 9/294:59 pm
STL
- ALB
1 stop5h 56m
Delta
Deal found 5/25![Delta logo]()
$362
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/85:15 pm
ALB
- STL
1 stop7h 00m
Southwest
dom. 7/128:00 pm
STL
- ALB
1 stop11h 25m
Southwest
Deal found 5/28![Southwest logo]()
$357
This Delta deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
mié. 8/55:30 am
BDL
- STL
1 stop5h 07m
Delta
dom. 8/96:00 am
STL
- BDL
1 stop5h 48m
Delta
Deal found 5/26![Delta logo]()
$371
This United Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/2410:35 am
BOS
- STL
1 stop6h 11m
United Airlines
mar. 6/3010:20 am
STL
- BOS
1 stop6h 11m
United Airlines
Deal found 5/28![United Airlines logo]()
$427
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/55:35 am
BOS
- STL
Nonstop2h 50m
Southwest
dom. 6/73:45 pm
STL
- BOS
2 stops8h 10m
Southwest
Deal found 5/27![Southwest logo]()
$366
This United Airlines deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
jue. 6/254:55 pm
BDL
- STL
1 stop5h 31m
United Airlines
lun. 6/296:00 am
STL
- BDL
2 stops7h 06m
United Airlines
Deal found 5/26![United Airlines logo]()
$444
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 7/307:10 pm
BDL
- STL
1 stop5h 43m
Delta
dom. 8/26:30 am
STL
- BDL
1 stop4h 43m
Delta
Deal found 5/27![Delta logo]()
$407
This Southwest deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
mar. 7/72:35 pm
BDL
- STL
1 stop5h 40m
Southwest
dom. 7/126:45 pm
STL
- BDL
1 stop4h 35m
Southwest
Deal found 5/26![Southwest logo]()
$371
This United Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/39:30 am
BOS
- STL
2 stops8h 58m
United Airlines
jue. 6/46:00 am
STL
- BOS
1 stop6h 12m
United Airlines
Deal found 5/27![United Airlines logo]()
$447
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 7/107:10 pm
BDL
- STL
1 stop4h 45m
Southwest
mié. 7/155:40 am
STL
- BDL
1 stop4h 20m
Southwest
Deal found 5/27![Southwest logo]()
$371
This Delta deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 6/205:30 am
BDL
- STL
1 stop5h 02m
Delta
sáb. 7/43:39 pm
STL
- BDL
1 stop7h 25m
Delta
Deal found 5/28![Delta logo]()
$417
This Southwest deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/15:50 am
BOS
- STL
Nonstop2h 55m
Southwest
mar. 8/46:40 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 5/27![Southwest logo]()
$374
This United Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/26:10 am
ALB
- STL
1 stop7h 01m
United Airlines
sáb. 8/81:18 pm
STL
- ALB
2 stops9h 29m
United Airlines
Deal found 5/27![United Airlines logo]()
$459
This Southwest deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
sáb. 7/411:25 am
BDL
- STL
1 stop7h 15m
Southwest
mar. 7/73:10 pm
STL
- BDL
2 stops6h 40m
Southwest
Deal found 5/26![Southwest logo]()
$376
This Delta deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 8/143:00 pm
BOS
- STL
1 stop6h 31m
Delta
dom. 8/169:25 am
STL
- BOS
1 stop6h 08m
Delta
Deal found 5/27![Delta logo]()
$458
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/84:30 pm
BDL
- STL
1 stop7h 45m
Southwest
dom. 7/128:00 pm
STL
- BDL
1 stop11h 05m
Southwest
Deal found 5/28![Southwest logo]()
$376
This Southwest deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
lun. 6/85:35 am
BOS
- STL
Nonstop2h 50m
Southwest
lun. 6/225:20 pm
STL
- BOS
1 stop5h 45m
Southwest
Deal found 5/25![Southwest logo]()
$381
This Southwest deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
vie. 9/251:15 pm
ALB
- STL
2 stops7h 55m
Southwest
mar. 9/296:30 am
STL
- ALB
2 stops6h 50m
Southwest
Deal found 5/25![Southwest logo]()
$382
This Southwest deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
mié. 6/243:45 pm
BOS
- STL
1 stop7h 40m
Southwest
mié. 7/15:25 am
STL
- BOS
2 stops8h 35m
Southwest
Deal found 5/25![Southwest logo]()
$402
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 7/154:15 pm
ALB
- STL
2 stops7h 50m
Southwest
dom. 7/198:00 pm
STL
- ALB
1 stop11h 25m
Southwest
Deal found 5/28![Southwest logo]()
$403
This Southwest deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/265:10 pm
BDL
- STL
1 stop7h 55m
Southwest
vie. 7/34:35 pm
STL
- BDL
2 stops6h 40m
Southwest
Deal found 5/29![Southwest logo]()
$422
Last-minute flights from Massachusetts to St. LouisDiscover last-minute flight deals from Massachusetts to St. Louis. Data last updated mayo 30, 2026 and is based on user searches.
Discover last-minute flight deals from Massachusetts to St. Louis. Data last updated mayo 30, 2026 and is based on user searches.
This Booking.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/1012:39 pm
BDL
- STL
1 stop12h 10m
Frontier
dom. 6/144:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/25![Frontier logo]()
$302
This Booking.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/1212:38 pm
BDL
- STL
1 stop12h 11m
Frontier
jue. 6/184:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/25![Frontier logo]()
$301
This Mytrip deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 6/1212:38 pm
BDL
- STL
1 stop12h 11m
Frontier
dom. 6/144:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/28![Frontier logo]()
$320
This Booking.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/1512:38 pm
BDL
- STL
1 stop12h 11m
Frontier
mar. 6/234:17 pm
STL
- BDL
1 stop18h 52m
Frontier
Deal found 5/25![Frontier logo]()
$261
This Booking.com deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/1712:54 pm
BDL
- STL
1 stop11h 55m
Frontier
dom. 6/214:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/25![Frontier logo]()
$282
This Frontier deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
lun. 6/2212:38 pm
BDL
- STL
1 stop12h 11m
Frontier
mar. 6/304:17 pm
STL
- BDL
1 stop18h 52m
Frontier
Deal found 5/25![Frontier logo]()
$249
This Mytrip deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/2212:38 pm
BDL
- STL
1 stop12h 11m
Frontier
jue. 6/254:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/27![Frontier logo]()
$299
This American Airlines deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/236:36 am
ALB
- STL
1 stop7h 36m
American Airlines
vie. 7/31:27 pm
STL
- ALB
1 stop4h 59m
American Airlines
Deal found 5/27![American Airlines logo]()
$327
This American Airlines deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/245:00 am
BDL
- STL
1 stop6h 12m
American Airlines
mié. 7/12:32 pm
STL
- BDL
1 stop7h 14m
American Airlines
Deal found 5/28![American Airlines logo]()
$335
This Southwest deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 6/244:30 pm
BDL
- STL
1 stop7h 40m
Southwest
mié. 7/15:40 am
STL
- BDL
2 stops7h 20m
Southwest
Deal found 5/28![Southwest logo]()
$340
This Booking.com deal was found by Cheapflights users on 5/27. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 6/2912:38 pm
BDL
- STL
1 stop12h 11m
Frontier
jue. 7/24:17 pm
STL
- BDL
1 stop18h 21m
Frontier
Deal found 5/27![Frontier logo]()
$280
This American Airlines deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
mar. 6/303:30 pm
ALB
- STL
1 stop6h 59m
American Airlines
mar. 7/145:48 pm
STL
- ALB
1 stop4h 35m
American Airlines
Deal found 5/25![American Airlines logo]()
$317
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 mayo 30, 2026.
Search for one-way flight options from Massachusetts to St. Louis. Find affordable one-way fares based on user searches. Data last updated mayo 30, 2026.
This Priceline deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
mar. 7/2111:52 am
BOS
- STL
1 stop6h 45m
Frontier
Deal found 5/25![Frontier logo]()
$115
This Delta deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/125:30 am
BOS
- STL
1 stop5h 07m
Delta
Deal found 5/29![Delta logo]()
$117
This Super.com deal was found by Cheapflights users on 5/30. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 6/236:00 am
BOS
- STL
1 stop12h 30m
Frontier
Deal found 5/30![Frontier logo]()
$120
This Frontier deal was found by Cheapflights users on 5/25. Clicking the “Pick Dates” 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.
mié. 6/1712:54 pm
BDL
- STL
1 stop11h 55m
Frontier
Deal found 5/25![Frontier logo]()
$121
This Expedia deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 8/256:00 am
BOS
- STL
1 stop12h 30m
Frontier
Deal found 5/29![Frontier logo]()
$121
This Frontier deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
jue. 7/2311:52 am
BOS
- STL
1 stop6h 45m
Frontier
Deal found 5/26![Frontier logo]()
$126
This Frontier deal was found by Cheapflights users on 5/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 10/111:05 am
BOS
- STL
1 stop9h 34m
Frontier
Deal found 5/28![Frontier logo]()
$129
This Super.com deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
dom. 6/79:12 am
BOS
- STL
1 stop9h 21m
Frontier
Deal found 5/26![Frontier logo]()
$131
This Frontier deal was found by Cheapflights users on 5/26. Clicking the “Pick Dates” 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.
jue. 8/209:12 am
BOS
- STL
1 stop9h 18m
Frontier
Deal found 5/26![Frontier logo]()
$132
This Frontier deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 6/256:00 am
BOS
- STL
1 stop12h 30m
Frontier
Deal found 5/29![Frontier logo]()
$133
This Super.com deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 7/2510:04 am
BOS
- STL
1 stop14h 55m
Frontier
Deal found 5/29![Frontier logo]()
$134
This Frontier deal was found by Cheapflights users on 5/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 8/1611:52 am
BOS
- STL
1 stop6h 45m
Frontier
Deal found 5/29![Frontier logo]()
$135
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 mayo 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $242 (Booking.com) |
One-way from | $115 (Priceline) |
Popular in | July |
Cheapest in | August |
Average price | $487 |
Good round-trip deal | $430 or less |
Good one-way deal | $230 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 mayo 30, 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 - STL
ALBSTL
Albany Intl
mié. 8/19
3:05 pm-9:10 pm
1 stop7h 05m
Lambert-St Louis
sáb. 8/22
6:30 am-3:15 pm
1 stop7h 45m
$316
AlbanySt. Louis
ALB - STL
ALBSTL
Albany Intl
mar. 8/25
12:00 pm-3:38 pm
1 stop4h 38m
Lambert-St Louis
mié. 8/26
8:00 am-3:05 pm
1 stop6h 05m
$337
HartfordSt. Louis
BDL - STL
BDLSTL
Hartford Bradley Intl
mar. 7/14
2:35 pm-7:15 pm
1 stop5h 40m
Lambert-St Louis
mié. 7/22
5:40 am-2:00 pm
2 stops7h 20m
$340
BostonSt. Louis
BOS - STL
BOSSTL
Boston Logan Intl
lun. 6/8
5:30 am-9:32 am
1 stop5h 02m
Lambert-St Louis
mar. 6/9
12:35 pm-6:33 pm
1 stop4h 58m
$352
BostonSt. Louis
BOS - STL
BOSSTL
Boston Logan Intl
mié. 7/29
2:00 pm-8:35 pm
1 stop7h 35m
Lambert-St Louis
lun. 8/3
5:23 pm-1:25 am
1 stop7h 02m
$352
HartfordSt. Louis
BDL - STL
BDLSTL
Hartford Bradley Intl
mié. 7/15
4:30 pm-11:15 pm
1 stop7h 45m
Lambert-St Louis
mar. 7/21
3:15 pm-10:50 pm
2 stops6h 35m
$352
AlbanySt. Louis
ALB - STL
ALBSTL
Albany Intl
mié. 7/8
5:15 pm-11:15 pm
1 stop7h 00m
Lambert-St Louis
dom. 7/12
8:00 pm-8:25 am
1 stop11h 25m
$357
AlbanySt. Louis
ALB - STL
ALBSTL
Albany Intl
vie. 9/25
6:25 am-1:23 pm
1 stop7h 58m
Lambert-St Louis
mar. 9/29
4:59 pm-11:55 pm
1 stop5h 56m
$362
BostonSt. Louis
BOS - STL
BOSSTL
Boston Logan Intl
vie. 6/5
5:35 am-7:25 am
Nonstop2h 50m
Lambert-St Louis
dom. 6/7
3:45 pm-12:55 am
2 stops8h 10m
$366
HartfordSt. Louis
BDL - STL
BDLSTL
Hartford Bradley Intl
mié. 8/5
5:30 am-9:37 am
1 stop5h 07m
Lambert-St Louis
dom. 8/9
6:00 am-12:48 pm
1 stop5h 48m
$371
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
BOS-STL
MVY-STL
BDL-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
BOS-STL
MVY-STL
BDL-STL
What is the cheapest month to book a flight from Massachusetts to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Massachusetts to St. Louis (average of $63). Flying from Massachusetts to St. Louis in March is currently the most expensive (average of $333). 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 mayo 30, 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 12% versus a flight at noon.
How much does it cost to fly round-trip from Massachusetts to St. Louis?
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 May 23, 2026.
Travelers seeking maximum savings on their Massachusetts to St. Louis flight should consider departing on Thursday 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
O'Fallon
Fenton
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
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Alternative routes for Massachusetts to St. Louis
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Complete your trip
Complete your trip to St. Louis by adding a car rental and/or hotel reservation to your travel itinerary.
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Find flights from Massachusetts to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Massachusetts and St. Louis flights
Browse other Massachusetts and St. Louis flight options. Last updated on mayo 30, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
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 mayo 30, 2026.
Massachusetts to St. Louis flights
Consider these flights traveling from Massachusetts to St. Louis.
Top 6 airlines flying from Massachusetts to St. Louis
Discover the top 6 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 mayo 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$63 | Average$207 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$90 | Average$220 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$148 | Average$461 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$284 | Average$486 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$315 | Average$492 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$327 | Average$430 | FlexibilityNo cancel fee | On-time62% |