$79+ Cheap flights from Missouri to Boston (BOS)
This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — BOS
May 23 — May 301
Round-trip
1 adult, Economy
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Find cheap flights from Missouri to Boston with Cheapflights
1. Tell us where you want to go
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Cheapest flights from Missouri to BostonExplore the most affordable flight options available from Missouri to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.
Explore the most affordable flight options available from Missouri to Boston. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 6/16:24 pm
MCI
- BOS
1 stop30h 00m
Frontier
Wed 6/36:00 am
BOS
- MCI
1 stop12h 29m
Frontier
Deal found 4/20![Frontier logo]()
$158
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/116:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Sat 5/1612:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/20![Frontier logo]()
$159
This Expedia deal was found by Cheapflights users on 4/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Sat 5/1612:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/20![Frontier logo]()
$160
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 6/16:24 pm
MCI
- BOS
1 stop12h 25m
Frontier
Fri 6/56:00 am
BOS
- MCI
1 stop12h 29m
Frontier
Deal found 4/20![Frontier logo]()
$180
This Frontier deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Wed 5/276:00 am
BOS
- MCI
1 stop12h 29m
Frontier
Deal found 4/18![Frontier logo]()
$185
This CheapOair deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Sat 5/912:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/18![Frontier logo]()
$191
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 6/16:24 pm
MCI
- BOS
1 stop12h 25m
Frontier
Sat 6/68:40 am
BOS
- MCI
2 stops9h 49m
Frontier
Deal found 4/20![Frontier logo]()
$194
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Wed 5/1312:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/22![Frontier logo]()
$206
This Delta deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/246:00 am
SGF
- BOS
1 stop8h 03m
Delta
Sat 10/314:20 pm
BOS
- SGF
1 stop7h 12m
Delta
Deal found 4/19![Delta logo]()
$295
This American Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/86:12 pm
SGF
- BOS
1 stop5h 24m
American Airlines
Thu 7/165:00 am
BOS
- SGF
1 stop6h 05m
American Airlines
Deal found 4/19![American Airlines logo]()
$322
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:16 am
COU
- BOS
1 stop7h 40m
American Airlines
Mon 8/175:29 am
BOS
- COU
1 stop6h 44m
American Airlines
Deal found 4/20![American Airlines logo]()
$328
This American Airlines deal was found by Cheapflights users on 4/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/512:00 pm
SGF
- BOS
1 stop8h 01m
American Airlines
Tue 5/123:16 pm
BOS
- SGF
1 stop6h 49m
American Airlines
Deal found 4/21![American Airlines logo]()
$329
Best flights from Missouri to BostonDiscover carefully curated flight deals from Missouri to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 23, 2026.
Discover carefully curated flight deals from Missouri to Boston that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 23, 2026.
This Delta deal was found by Cheapflights users on 4/22. 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.
Wed 5/136:00 am
STL
- BOS
1 stop6h 20m
Delta
Sat 5/239:10 am
BOS
- STL
1 stop6h 41m
Delta
Deal found 4/22![Delta logo]()
$338
This United Airlines deal was found by Cheapflights users on 4/21. 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.
Wed 5/68:00 am
COU
- BOS
1 stop6h 03m
United Airlines
Sun 5/107:30 am
BOS
- COU
1 stop8h 02m
United Airlines
Deal found 4/21![United Airlines logo]()
$358
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/1910:30 am
COU
- BOS
1 stop6h 02m
American Airlines
Wed 6/244:46 pm
BOS
- COU
1 stop7h 00m
American Airlines
Deal found 4/20![American Airlines logo]()
$408
This Southwest deal was found by Cheapflights users on 4/21. 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 6/117:55 pm
STL
- BOS
Nonstop2h 30m
Southwest
Tue 6/165:50 am
BOS
- STL
Nonstop2h 55m
Southwest
Deal found 4/21![Southwest logo]()
$436
This United Airlines deal was found by Cheapflights users on 4/22. 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 5/163:10 pm
COU
- BOS
1 stop5h 49m
United Airlines
Mon 5/186:00 am
BOS
- COU
1 stop5h 55m
United Airlines
Deal found 4/22![United Airlines logo]()
$411
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/83:40 pm
STL
- BOS
1 stop6h 56m
Delta
Sat 7/115:40 am
BOS
- STL
1 stop4h 51m
Delta
Deal found 4/20![Delta logo]()
$431
This American Airlines deal was found by Cheapflights users on 4/22. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 6/133:55 pm
STL
- BOS
Nonstop2h 45m
American Airlines
Sun 6/216:12 am
BOS
- STL
Nonstop3h 10m
American Airlines
Deal found 4/22![American Airlines logo]()
$436
This Southwest deal was found by Cheapflights users on 4/20. 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 6/278:45 pm
STL
- BOS
Nonstop2h 30m
Southwest
Mon 6/295:25 am
BOS
- STL
1 stop7h 45m
Southwest
Deal found 4/20![Southwest logo]()
$446
This United Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/1211:30 am
COU
- BOS
1 stop5h 06m
United Airlines
Sat 8/156:00 am
BOS
- COU
3 stops12h 45m
United Airlines
Deal found 4/19![United Airlines logo]()
$429
This Delta deal was found by Cheapflights users on 4/21. 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.
Mon 6/16:25 pm
MCI
- BOS
Nonstop3h 12m
Delta
Sun 6/72:10 pm
BOS
- MCI
Nonstop3h 27m
Delta
Deal found 4/21![Delta logo]()
$433
This Southwest deal was found by Cheapflights users on 4/20. 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 9/55:35 am
MCI
- BOS
1 stop4h 25m
Southwest
Sat 9/1210:45 am
BOS
- MCI
2 stops8h 30m
Southwest
Deal found 4/20![Southwest logo]()
$454
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:00 am
COU
- BOS
2 stops7h 30m
American Airlines
Mon 8/175:36 pm
BOS
- COU
1 stop5h 30m
American Airlines
Deal found 4/20![American Airlines logo]()
$472
This Southwest deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 6/157:55 pm
STL
- BOS
Nonstop2h 30m
Southwest
Sat 6/205:50 am
BOS
- STL
Nonstop2h 55m
Southwest
Deal found 4/18![Southwest logo]()
$461
This Delta deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:40 pm
MCI
- BOS
Nonstop3h 13m
Delta
Tue 6/306:10 am
BOS
- MCI
Nonstop3h 28m
Delta
Deal found 4/18![Delta logo]()
$463
This United Airlines deal was found by Cheapflights users on 4/21. 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 8/186:35 pm
SGF
- BOS
1 stop5h 30m
United Airlines
Thu 8/275:45 am
BOS
- SGF
2 stops9h 48m
United Airlines
Deal found 4/21![United Airlines logo]()
$469
This Southwest deal was found by Cheapflights users on 4/22. 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.
Tue 6/1611:00 am
MCI
- BOS
Nonstop3h 00m
Southwest
Wed 6/1711:35 am
BOS
- MCI
1 stop4h 55m
Southwest
Deal found 4/22![Southwest logo]()
$469
This Delta deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 am
STL
- BOS
1 stop6h 43m
Delta
Tue 5/55:35 am
BOS
- STL
1 stop7h 21m
Delta
Deal found 4/18![Delta logo]()
$471
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 5/62:28 pm
JLN
- BOS
1 stop8h 31m
United Airlines
Sat 5/97:30 am
BOS
- JLN
1 stop7h 07m
United Airlines
Deal found 4/22![United Airlines logo]()
$484
This Delta deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/167:25 pm
MCI
- BOS
Nonstop3h 05m
Delta
Mon 9/216:50 am
BOS
- MCI
Nonstop3h 41m
Delta
Deal found 4/18![Delta logo]()
$477
This Southwest deal was found by Cheapflights users on 4/21. 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 6/264:35 pm
STL
- BOS
2 stops6h 30m
Southwest
Sun 6/288:00 am
BOS
- STL
1 stop8h 00m
Southwest
Deal found 4/21![Southwest logo]()
$486
This United Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/89:06 am
JLN
- BOS
2 stops26h 45m
United Airlines
Sun 5/106:00 am
BOS
- JLN
1 stop8h 37m
United Airlines
Deal found 4/18![United Airlines logo]()
$513
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 6/79:34 am
MCI
- BOS
Nonstop3h 15m
Delta
Wed 6/106:10 am
BOS
- MCI
Nonstop3h 28m
Delta
Deal found 4/20![Delta logo]()
$477
This United Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/238:54 am
JLN
- BOS
1 stop28h 08m
United Airlines
Wed 5/273:08 pm
BOS
- JLN
1 stop23h 14m
United Airlines
Deal found 4/18![United Airlines logo]()
$521
This Delta deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/187:25 pm
MCI
- BOS
Nonstop3h 05m
Delta
Tue 9/226:50 am
BOS
- MCI
Nonstop3h 41m
Delta
Deal found 4/18![Delta logo]()
$477
This United Airlines deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/236:35 pm
SGF
- BOS
2 stops15h 41m
United Airlines
Wed 5/273:08 pm
BOS
- SGF
1 stop7h 40m
United Airlines
Deal found 4/18![United Airlines logo]()
$524
This Delta deal was found by Cheapflights users on 4/22. 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.
Wed 5/276:25 pm
MCI
- BOS
Nonstop3h 12m
Delta
Fri 5/296:05 am
BOS
- MCI
Nonstop3h 37m
Delta
Deal found 4/22![Delta logo]()
$477
This Delta deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/237:40 pm
MCI
- BOS
Nonstop3h 13m
Delta
Sun 6/286:10 am
BOS
- MCI
Nonstop3h 28m
Delta
Deal found 4/19![Delta logo]()
$477
This United Airlines deal was found by Cheapflights users on 4/22. 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.
Wed 7/86:00 am
STL
- BOS
2 stops7h 40m
United Airlines
Sat 7/117:19 am
BOS
- STL
1 stop5h 48m
United Airlines
Deal found 4/22![United Airlines logo]()
$526
This United Airlines deal was found by Cheapflights users on 4/19. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 7/191:57 pm
JLN
- BOS
1 stop7h 02m
United Airlines
Sun 7/265:45 am
BOS
- JLN
2 stops8h 37m
United Airlines
Deal found 4/19![United Airlines logo]()
$536
This Delta deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/53:30 pm
SGF
- BOS
1 stop6h 19m
Delta
Sun 9/138:00 am
BOS
- SGF
1 stop7h 45m
Delta
Deal found 4/20![Delta logo]()
$489
Last-minute flights from Missouri to BostonDiscover last-minute flight deals from Missouri to Boston. Data last updated April 23, 2026 and is based on user searches.
Discover last-minute flight deals from Missouri to Boston. Data last updated April 23, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 4/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/512:00 pm
SGF
- BOS
1 stop8h 01m
American Airlines
Tue 5/123:16 pm
BOS
- SGF
1 stop6h 49m
American Airlines
Deal found 4/21![American Airlines logo]()
$329
This CheapOair deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/66:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Sat 5/912:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/18![Frontier logo]()
$191
This Frontier deal was found by Cheapflights users on 4/20. 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.
Fri 5/86:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Mon 5/1112:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/20![Frontier logo]()
$180
This Expedia deal was found by Cheapflights users on 4/22. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/96:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Wed 5/1312:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/22![Frontier logo]()
$206
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/116:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Sat 5/1612:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/20![Frontier logo]()
$159
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
Tue 5/122:34 pm
MCI
- BOS
2 stops33h 50m
Frontier
Sat 5/1612:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/20![Frontier logo]()
$215
This Expedia deal was found by Cheapflights users on 4/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Sat 5/1612:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/20![Frontier logo]()
$160
This Frontier deal was found by Cheapflights users on 4/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/136:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Fri 5/1512:01 pm
BOS
- MCI
1 stop6h 28m
Frontier
Deal found 4/20![Frontier logo]()
$205
This Frontier deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Wed 5/276:00 am
BOS
- MCI
1 stop12h 29m
Frontier
Deal found 4/18![Frontier logo]()
$185
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/226:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Mon 5/256:00 am
BOS
- MCI
1 stop12h 29m
Frontier
Deal found 4/18![Frontier logo]()
$212
This American Airlines deal was found by Cheapflights users on 4/20. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/277:16 am
COU
- BOS
1 stop7h 40m
American Airlines
Mon 8/175:29 am
BOS
- COU
1 stop6h 44m
American Airlines
Deal found 4/20![American Airlines logo]()
$328
This Frontier deal was found by Cheapflights users on 4/20. 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.
Fri 5/296:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Mon 6/16:00 am
BOS
- MCI
1 stop12h 29m
Frontier
Deal found 4/20![Frontier logo]()
$210
One-way flights from Missouri to BostonSearch for one-way flight options from Missouri to Boston. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
Search for one-way flight options from Missouri to Boston. Find affordable one-way fares based on user searches. Data last updated April 23, 2026.
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 5/136:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Deal found 4/20![Frontier logo]()
$79
This Frontier deal was found by Cheapflights users on 4/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/156:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Deal found 4/21![Frontier logo]()
$80
This Kiwi.com deal was found by Cheapflights users on 4/20. 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 6/16:24 pm
MCI
- BOS
1 stop12h 25m
Frontier
Deal found 4/20![Frontier logo]()
$81
This Kiwi.com deal was found by Cheapflights users on 4/21. 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 6/56:24 pm
MCI
- BOS
1 stop30h 00m
Frontier
Deal found 4/21![Frontier logo]()
$82
This Frontier deal was found by Cheapflights users on 4/20. 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.
Fri 5/86:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Deal found 4/20![Frontier logo]()
$100
This Kiwi.com deal was found by Cheapflights users on 4/21. 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.
Mon 7/206:19 pm
MCI
- BOS
1 stop12h 33m
Frontier
Deal found 4/21![Frontier logo]()
$102
This Frontier deal was found by Cheapflights users on 4/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/276:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Deal found 4/21![Frontier logo]()
$105
This Frontier deal was found by Cheapflights users on 4/21. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/226:19 pm
MCI
- BOS
1 stop12h 33m
Frontier
Deal found 4/21![Frontier logo]()
$111
This Kiwi.com deal was found by Cheapflights users on 4/18. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/206:24 pm
MCI
- BOS
1 stop6h 00m
Frontier
Deal found 4/18![Frontier logo]()
$113
This Kiwi.com deal was found by Cheapflights users on 4/20. 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.
Sat 6/206:16 pm
MCI
- BOS
1 stop12h 36m
Frontier
Deal found 4/20![Frontier logo]()
$115
This Kiwi.com deal was found by Cheapflights users on 4/22. 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.
Tue 5/196:33 pm
STL
- BOS
2 stops15h 33m
Frontier
Deal found 4/22![Frontier logo]()
$133
This Southwest deal was found by Cheapflights users on 4/22. 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.
Tue 5/196:50 pm
STL
- BOS
Nonstop2h 30m
Southwest
Deal found 4/22![Southwest logo]()
$142
Find flight deals from Missouri to Boston
Keep the following information in mind while searching for Missouri to Boston flight deals. Data was last updated April 23, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $158 (Kiwi.com) |
One-way from | $79 (Kiwi.com) |
Popular in | February |
Cheapest in | September |
Average price | $469 |
Good round-trip deal | $465 or less |
Good one-way deal | $230 or less |
Cheapflights Fare Finder
Customize your flight search to find flights from Missouri to Boston that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
Use the filters below to find and compare flights from Missouri to Boston that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Wed 5/13
6:00 am-1:20 pm
1 stop6h 20m
Boston Logan Intl
Sat 5/23
9:10 am-2:51 pm
1 stop6h 41m
$338
ColumbiaBoston
COU - BOS
COUBOS
Columbia Regional
Wed 5/6
8:00 am-3:03 pm
1 stop6h 03m
Boston Logan Intl
Sun 5/10
7:30 am-2:32 pm
1 stop8h 02m
$358
ColumbiaBoston
COU - BOS
COUBOS
Columbia Regional
Fri 6/19
10:30 am-5:32 pm
1 stop6h 02m
Boston Logan Intl
Wed 6/24
4:46 pm-10:46 pm
1 stop7h 00m
$408
ColumbiaBoston
COU - BOS
COUBOS
Columbia Regional
Sat 5/16
3:10 pm-9:59 pm
1 stop5h 49m
Boston Logan Intl
Mon 5/18
6:00 am-10:55 am
1 stop5h 55m
$411
ColumbiaBoston
COU - BOS
COUBOS
Columbia Regional
Wed 8/12
11:30 am-5:36 pm
1 stop5h 06m
Boston Logan Intl
Sat 8/15
6:00 am-5:45 pm
3 stops12h 45m
$429
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Wed 7/8
3:40 pm-11:36 pm
1 stop6h 56m
Boston Logan Intl
Sat 7/11
5:40 am-9:31 am
1 stop4h 51m
$431
Kansas CityBoston
MCI - BOS
MCIBOS
Kansas City
Mon 6/1
6:25 pm-10:37 pm
Nonstop3h 12m
Boston Logan Intl
Sun 6/7
2:10 pm-4:37 pm
Nonstop3h 27m
$433
Quickest round-trip
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Thu 6/11
7:55 pm-11:25 pm
Nonstop2h 30m
Boston Logan Intl
Tue 6/16
5:50 am-7:45 am
Nonstop2h 55m
$436
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Sat 6/13
3:55 pm-7:40 pm
Nonstop2h 45m
Boston Logan Intl
Sun 6/21
6:12 am-8:22 am
Nonstop3h 10m
$436
St. LouisBoston
STL - BOS
STLBOS
Lambert-St Louis
Sat 6/27
8:45 pm-12:15 am
Nonstop2h 30m
Boston Logan Intl
Mon 6/29
5:25 am-12:10 pm
1 stop7h 45m
$446
Showing 1-10 of 60 resultsSorted by cheapest first
Best time to book a flight from Missouri to Boston
Have a flexible travel schedule? Discover the best time to fly to Boston from Missouri with our price prediction graph.
STL-BOS
COU-BOS
MCI-BOS
SGF-BOS
JLN-BOS
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from Missouri to Boston
USMO-BOS
STL-BOS
COU-BOS
MCI-BOS
SGF-BOS
What is the cheapest month to book a flight from Missouri to Boston?
Currently, August is the cheapest month in which you can book a flight from Missouri to Boston (average of $83). Flying from Missouri to Boston in February is currently the most expensive (average of $250). 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 MO to BOS?
Find hourly flight availability from Missouri to Boston. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 23, 2026.
A simple way to save on the total cost of your ticket is to fly from Missouri to Boston in the afternoon. If you’re flexible enough to do this you can expect to save up to 47% on your trip compared to booking a flight at noon.
What is the cheapest day to fly from Missouri to Boston?
Use this chart to determine the cheapest time to fly round-trip from Missouri to Boston. Price data was last updated on April 18, 2026.
Travelers seeking maximum savings on their Missouri to Boston flight should consider departing on Saturday afternoons when fares are most often at their lowest. Saturday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Weekly flight availability from Missouri to Boston
Explore weekly flight availability from Missouri to Boston. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 23, 2026.
The most flights from USMO to BOS are scheduled on a Monday (7 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (3 on average).
How much does it cost to fly round-trip from Missouri to Boston?
Related info for your journey
Find useful and relevant information for your journey from Missouri to Boston. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
Traveling to a place near Boston?
Book flights to Boston if you plan to visit one of these locationsMedford
Cambridge
Concord
Hampton Beach
Watertown
Brockton
Seekonk
Cranston
Chelsea
Warwick
Peabody
Seabrook
York Beach
Londonderry
Swansea
Old Orchard Beach
Quincy
Waltham
Lowell
Braintree
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.
Alternative routes
Boston flight routes
Complete your trip
Flights by cabin class
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Alternative routes for Missouri to Boston
See prices for flight routes from nearby airports that may be better suited for you.
Other flights to Boston
Explore flights to Boston departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on April 23, 2026.
Complete your trip
Complete your trip to Boston by adding a car rental and/or hotel reservation to your travel itinerary.
Search flights from Missouri to Boston by cabin class
Find flights from Missouri to Boston, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Missouri and Boston flights
Browse other Missouri and Boston flight options. Last updated on April 23, 2026.
Popular flight searches
Check out other popular destinations found by fellow travelers in 2026
Missouri to Boston flights
Consider these flights traveling from Missouri to Boston.
Top 6 airlines flying from Missouri to Boston
Discover the top 6 airlines that operate flights from Missouri to Boston. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 23, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$73 | Average$237 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$118 | Average$432 | FlexibilityNo cancel fee | On-timeN/A | |
| Cheapest$125 | Average$200 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$217 | Average$448 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$248 | Average$466 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$304 | Average$468 | FlexibilityNo cancel fee | On-time63% |