$86+ Cheap flights from New Hampshire 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 4/28. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — STL
May 1 — May 81
Round-trip
1 adult, Economy
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Find cheap flights from New Hampshire to St. Louis 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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Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheap flight deals from New Hampshire to St. Louis
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Cheapest flights from New Hampshire to St. LouisExplore the most affordable flight options available from New Hampshire to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.
Explore the most affordable flight options available from New Hampshire to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 1, 2026.
This Southwest deal was found by Cheapflights users on 3/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/299:10 am
MHT
- STL
1 stop7h 05m
Southwest
Wed 5/66:35 am
STL
- MHT
1 stop7h 30m
Southwest
Deal found 3/30![Southwest logo]()
$307
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/76:02 am
PWM
- STL
1 stop7h 21m
Delta
Wed 5/136:45 am
STL
- PWM
1 stop4h 15m
Delta
Deal found 3/31![Delta logo]()
$315
This Southwest deal was found by Cheapflights users on 3/29. 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.
Sat 5/25:25 am
MHT
- STL
2 stops9h 10m
Southwest
Sat 5/95:40 am
STL
- MHT
2 stops7h 30m
Southwest
Deal found 3/29![Southwest logo]()
$317
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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.
Mon 4/275:41 pm
MHT
- STL
1 stop5h 36m
American Airlines
Wed 4/292:33 pm
STL
- MHT
1 stop7h 18m
American Airlines
Deal found 3/31![American Airlines logo]()
$319
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:15 pm
PWM
- STL
1 stop5h 42m
United Airlines
Tue 4/289:10 am
STL
- PWM
2 stops8h 27m
United Airlines
Deal found 4/1![United Airlines logo]()
$320
This Southwest deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 6/45:35 am
MHT
- STL
1 stop6h 15m
Southwest
Mon 6/85:40 am
STL
- MHT
1 stop4h 10m
Southwest
Deal found 3/31![Southwest logo]()
$331
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/252:12 pm
PWM
- STL
2 stops8h 40m
United Airlines
Thu 4/307:45 am
STL
- PWM
1 stop5h 29m
United Airlines
Deal found 4/1![United Airlines logo]()
$336
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Mon 5/119:57 am
BOS
- STL
2 stops32h 36m
Frontier
Thu 5/146:55 pm
STL
- BOS
1 stop11h 54m
Frontier
Deal found 3/29![Frontier logo]()
$340
This CheapOair deal was found by Cheapflights users on 3/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1411:16 am
BOS
- STL
1 stop13h 03m
Frontier
Sat 4/184:59 pm
STL
- BOS
1 stop16h 17m
Frontier
Deal found 3/28![Frontier logo]()
$341
This American Airlines deal was found by Cheapflights users on 3/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2810:47 am
PWM
- STL
1 stop5h 26m
American Airlines
Wed 4/296:35 am
STL
- PWM
1 stop7h 34m
American Airlines
Deal found 3/30![American Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/134:23 pm
BOS
- STL
1 stop8h 02m
Multiple Airlines
Thu 4/164:59 pm
STL
- BOS
1 stop15h 30m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$342
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:27 pm
BOS
- STL
1 stop8h 52m
Multiple Airlines
Sun 4/264:59 pm
STL
- BOS
2 stops38h 14m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$343
Best flights from New Hampshire to St. LouisDiscover carefully curated flight deals from New Hampshire to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 1, 2026.
Discover carefully curated flight deals from New Hampshire to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 1, 2026.
This Southwest deal was found by Cheapflights users on 3/29. 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.
Sat 5/27:40 am
MHT
- STL
1 stop7h 20m
Southwest
Sat 5/96:20 am
STL
- MHT
1 stop4h 30m
Southwest
Deal found 3/29![Southwest logo]()
$307
This United Airlines deal was found by Cheapflights users on 3/30. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/211:34 am
PWM
- STL
1 stop7h 42m
United Airlines
Wed 5/67:45 am
STL
- PWM
1 stop5h 29m
United Airlines
Deal found 3/30![United Airlines logo]()
$405
This Southwest deal was found by Cheapflights users on 3/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/293:45 pm
MHT
- STL
1 stop6h 20m
Southwest
Wed 5/65:35 am
STL
- MHT
2 stops8h 30m
Southwest
Deal found 3/30![Southwest logo]()
$312
This Southwest deal was found by Cheapflights users on 3/27. 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.
Tue 6/25:55 pm
BOS
- STL
Nonstop3h 05m
Southwest
Wed 6/36:50 pm
STL
- BOS
Nonstop2h 30m
Southwest
Deal found 3/27![Southwest logo]()
$353
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/202:36 pm
MHT
- STL
2 stops10h 21m
United Airlines
Sun 5/246:00 am
STL
- MHT
2 stops12h 02m
United Airlines
Deal found 4/1![United Airlines logo]()
$422
This Southwest deal was found by Cheapflights users on 3/27. 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.
Fri 7/176:45 am
MHT
- STL
1 stop6h 25m
Southwest
Tue 7/215:40 am
STL
- MHT
1 stop4h 10m
Southwest
Deal found 3/27![Southwest logo]()
$397
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/65:45 am
BOS
- STL
2 stops9h 47m
United Airlines
Mon 5/117:45 am
STL
- BOS
1 stop7h 31m
United Airlines
Deal found 3/31![United Airlines logo]()
$450
This Southwest deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 9/2312:30 pm
MHT
- STL
2 stops6h 25m
Southwest
Fri 9/2512:30 pm
STL
- MHT
2 stops8h 20m
Southwest
Deal found 3/31![Southwest logo]()
$407
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 5/95:45 am
BOS
- STL
2 stops9h 47m
United Airlines
Tue 5/126:30 am
STL
- BOS
2 stops6h 56m
United Airlines
Deal found 3/27![United Airlines logo]()
$473
This Southwest deal was found by Cheapflights users on 3/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/145:40 am
BOS
- STL
Nonstop3h 00m
Southwest
Thu 5/217:20 am
STL
- BOS
1 stop4h 20m
Southwest
Deal found 3/30![Southwest logo]()
$417
This Southwest deal was found by Cheapflights users on 3/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/2512:30 pm
MHT
- STL
1 stop9h 05m
Southwest
Sun 6/288:00 pm
STL
- MHT
1 stop11h 10m
Southwest
Deal found 3/30![Southwest logo]()
$432
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 7/189:25 am
MHT
- STL
2 stops13h 01m
United Airlines
Tue 7/216:00 am
STL
- MHT
2 stops12h 02m
United Airlines
Deal found 3/27![United Airlines logo]()
$560
This Southwest deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/810:40 am
BOS
- STL
2 stops13h 15m
Southwest
Sat 5/92:25 pm
STL
- BOS
2 stops8h 15m
Southwest
Deal found 4/1![Southwest logo]()
$443
This Southwest deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 9/285:55 am
PWM
- STL
1 stop6h 40m
Southwest
Fri 10/29:30 am
STL
- PWM
1 stop6h 25m
Southwest
Deal found 4/1![Southwest logo]()
$447
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/152:30 pm
MHT
- STL
1 stop5h 52m
United Airlines
Tue 4/289:10 am
STL
- MHT
2 stops8h 46m
United Airlines
Deal found 4/1![United Airlines logo]()
$608
This Southwest deal was found by Cheapflights users on 3/28. 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.
Wed 8/121:05 pm
BOS
- STL
Nonstop2h 50m
Southwest
Tue 8/181:20 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 3/28![Southwest logo]()
$461
This United Airlines deal was found by Cheapflights users on 3/27. 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.
Sat 7/189:25 am
MHT
- STL
2 stops13h 01m
United Airlines
Wed 7/226:00 am
STL
- MHT
2 stops12h 02m
United Airlines
Deal found 3/27![United Airlines logo]()
$630
This Southwest deal was found by Cheapflights users on 3/29. 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.
Thu 5/148:45 am
BOS
- STL
2 stops10h 55m
Southwest
Sat 5/162:25 pm
STL
- BOS
2 stops8h 15m
Southwest
Deal found 3/29![Southwest logo]()
$462
This United Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 6/29:25 am
MHT
- STL
1 stop26h 02m
United Airlines
Wed 6/35:41 pm
STL
- MHT
2 stops19h 21m
United Airlines
Deal found 3/31![United Airlines logo]()
$643
This Southwest deal was found by Cheapflights users on 3/27. 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.
Mon 6/155:35 am
BOS
- STL
Nonstop2h 50m
Southwest
Wed 6/174:00 pm
STL
- BOS
1 stop7h 45m
Southwest
Deal found 3/27![Southwest logo]()
$471
This Southwest deal was found by Cheapflights users on 3/27. 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.
Fri 6/127:30 am
BOS
- STL
1 stop7h 40m
Southwest
Tue 6/1610:15 am
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 3/27![Southwest logo]()
$471
This Southwest deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 4/253:15 pm
BOS
- STL
Nonstop2h 55m
Southwest
Mon 4/272:30 pm
STL
- BOS
Nonstop2h 35m
Southwest
Deal found 3/31![Southwest logo]()
$472
This Southwest deal was found by Cheapflights users on 3/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 6/511:30 am
MHT
- STL
2 stops8h 00m
Southwest
Sun 6/74:30 pm
STL
- MHT
2 stops6h 35m
Southwest
Deal found 3/30![Southwest logo]()
$531
Last-minute flights from New Hampshire to St. LouisDiscover last-minute flight deals from New Hampshire to St. Louis. Data last updated April 1, 2026 and is based on user searches.
Discover last-minute flight deals from New Hampshire to St. Louis. Data last updated April 1, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/134:23 pm
BOS
- STL
1 stop8h 02m
Multiple Airlines
Thu 4/164:59 pm
STL
- BOS
1 stop15h 30m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$342
This CheapOair deal was found by Cheapflights users on 3/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1411:16 am
BOS
- STL
1 stop13h 03m
Frontier
Sat 4/184:59 pm
STL
- BOS
1 stop16h 17m
Frontier
Deal found 3/28![Frontier logo]()
$341
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/233:27 pm
BOS
- STL
1 stop8h 52m
Multiple Airlines
Sun 4/264:59 pm
STL
- BOS
2 stops38h 14m
Multiple Airlines
Deal found 3/30![Multiple Airlines logo]()
$343
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/257:15 pm
PWM
- STL
1 stop5h 42m
United Airlines
Tue 4/289:10 am
STL
- PWM
2 stops8h 27m
United Airlines
Deal found 4/1![United Airlines logo]()
$320
This United Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 4/252:12 pm
PWM
- STL
2 stops8h 40m
United Airlines
Thu 4/307:45 am
STL
- PWM
1 stop5h 29m
United Airlines
Deal found 4/1![United Airlines logo]()
$336
This American Airlines deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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.
Mon 4/275:41 pm
MHT
- STL
1 stop5h 36m
American Airlines
Wed 4/292:33 pm
STL
- MHT
1 stop7h 18m
American Airlines
Deal found 3/31![American Airlines logo]()
$319
This American Airlines deal was found by Cheapflights users on 3/30. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2810:47 am
PWM
- STL
1 stop5h 26m
American Airlines
Wed 4/296:35 am
STL
- PWM
1 stop7h 34m
American Airlines
Deal found 3/30![American Airlines logo]()
$342
This Southwest deal was found by Cheapflights users on 3/30. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/299:10 am
MHT
- STL
1 stop7h 05m
Southwest
Wed 5/66:35 am
STL
- MHT
1 stop7h 30m
Southwest
Deal found 3/30![Southwest logo]()
$307
This Southwest deal was found by Cheapflights users on 3/29. 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.
Sat 5/25:25 am
MHT
- STL
2 stops9h 10m
Southwest
Sat 5/95:40 am
STL
- MHT
2 stops7h 30m
Southwest
Deal found 3/29![Southwest logo]()
$317
This Southwest deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/47:10 pm
MHT
- STL
1 stop4h 35m
Southwest
Thu 5/73:25 pm
STL
- MHT
1 stop6h 25m
Southwest
Deal found 4/1![Southwest logo]()
$331
This Delta deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/76:02 am
PWM
- STL
1 stop7h 21m
Delta
Wed 5/136:45 am
STL
- PWM
1 stop4h 15m
Delta
Deal found 3/31![Delta logo]()
$315
This Kiwi.com deal was found by Cheapflights users on 3/29. 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.
Mon 5/119:57 am
BOS
- STL
2 stops32h 36m
Frontier
Thu 5/146:55 pm
STL
- BOS
1 stop11h 54m
Frontier
Deal found 3/29![Frontier logo]()
$340
One-way flights from New Hampshire to St. LouisSearch for one-way flight options from New Hampshire to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
Search for one-way flight options from New Hampshire to St. Louis. Find affordable one-way fares based on user searches. Data last updated April 1, 2026.
This Frontier deal was found by Cheapflights users on 3/30. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/2811:16 am
BOS
- STL
1 stop13h 03m
Frontier
Deal found 3/30![Frontier logo]()
$86
This Trip.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:40 pm
BOS
- STL
1 stop19h 10m
Frontier
Deal found 3/31![Frontier logo]()
$99
This Super.com deal was found by Cheapflights users on 3/30. 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.
Sun 4/125:30 am
BOS
- STL
1 stop6h 08m
Frontier
Deal found 3/30![Frontier logo]()
$101
This Frontier deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/286:00 am
BOS
- STL
1 stop12h 33m
Frontier
Deal found 3/31![Frontier logo]()
$106
This Expedia deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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.
Tue 6/306:00 am
BOS
- STL
1 stop12h 30m
Frontier
Deal found 3/31![Frontier logo]()
$111
This CheapOair deal was found by Cheapflights users on 3/28. 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 CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 4/2710:08 am
BOS
- STL
1 stop14h 11m
Frontier
Deal found 3/28![Frontier logo]()
$112
This Kiwi.com deal was found by Cheapflights users on 3/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/278:44 am
BOS
- STL
2 stops33h 49m
Frontier
Deal found 3/30![Frontier logo]()
$114
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/1910:07 am
BOS
- STL
2 stops23h 48m
Frontier
Deal found 3/31![Frontier logo]()
$116
This Kiwi.com deal was found by Cheapflights users on 3/31. Clicking the “Pick Dates” 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 5/111:06 am
BOS
- STL
2 stops20h 44m
Frontier
Deal found 3/31![Frontier logo]()
$117
This Kiwi.com deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:09 pm
MHT
- STL
2 stops37h 41m
Multiple Airlines
Deal found 4/1![Multiple Airlines logo]()
$148
This American Airlines deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/26:00 am
MHT
- STL
1 stop7h 35m
American Airlines
Deal found 4/1![American Airlines logo]()
$154
This Southwest deal was found by Cheapflights users on 4/1. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/162:10 pm
MHT
- STL
2 stops9h 10m
Southwest
Deal found 4/1![Southwest logo]()
$159
Find flight deals from New Hampshire to St. Louis
Keep the following information in mind while searching for New Hampshire to St. Louis flight deals. Data was last updated April 1, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $307 (Southwest) |
One-way from | $86 (Frontier) |
Popular in | March |
Cheapest in | August |
Average price | $511 |
Cheapflights Fare Finder
Customize your flight search to find flights from New Hampshire 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 April 1, 2026.
Use the filters below to find and compare flights from New Hampshire to St. Louis that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
ManchesterSt. Louis
MHT - STL
MHTSTL
Manchester
Sat 5/2
7:40 am-2:00 pm
1 stop7h 20m
Lambert-St Louis
Sat 5/9
6:20 am-11:50 am
1 stop4h 30m
$307
ManchesterSt. Louis
MHT - STL
MHTSTL
Manchester
Wed 4/29
3:45 pm-9:05 pm
1 stop6h 20m
Lambert-St Louis
Wed 5/6
5:35 am-3:05 pm
2 stops8h 30m
$312
BostonSt. Louis
BOS - STL
BOSSTL
Boston Logan Intl
Tue 6/2
5:55 pm-8:00 pm
Nonstop3h 05m
Lambert-St Louis
Wed 6/3
6:50 pm-10:20 pm
Nonstop2h 30m
$353
ManchesterSt. Louis
MHT - STL
MHTSTL
Manchester
Fri 7/17
6:45 am-12:10 pm
1 stop6h 25m
Lambert-St Louis
Tue 7/21
5:40 am-10:50 am
1 stop4h 10m
$397
PortlandSt. Louis
PWM - STL
PWMSTL
Portland
Sat 5/2
11:34 am-6:16 pm
1 stop7h 42m
Lambert-St Louis
Wed 5/6
7:45 am-2:14 pm
1 stop5h 29m
$405
ManchesterSt. Louis
MHT - STL
MHTSTL
Manchester
Wed 9/23
12:30 pm-5:55 pm
2 stops6h 25m
Lambert-St Louis
Fri 9/25
12:30 pm-9:50 pm
2 stops8h 20m
$407
BostonSt. Louis
BOS - STL
BOSSTL
Boston Logan Intl
Thu 5/14
5:40 am-7:40 am
Nonstop3h 00m
Lambert-St Louis
Thu 5/21
7:20 am-12:40 pm
1 stop4h 20m
$417
ManchesterSt. Louis
MHT - STL
MHTSTL
Manchester
Wed 5/20
2:36 pm-11:57 pm
2 stops10h 21m
Lambert-St Louis
Sun 5/24
6:00 am-7:02 pm
2 stops12h 02m
$422
ManchesterSt. Louis
MHT - STL
MHTSTL
Manchester
Thu 6/25
12:30 pm-8:35 pm
1 stop9h 05m
Lambert-St Louis
Sun 6/28
8:00 pm-8:10 am
1 stop11h 10m
$432
BostonSt. Louis
BOS - STL
BOSSTL
Boston Logan Intl
Fri 5/8
10:40 am-10:55 pm
2 stops13h 15m
Lambert-St Louis
Sat 5/9
2:25 pm-11:40 pm
2 stops8h 15m
$443
Showing 1-10 of 45 resultsSorted by cheapest first
Best time to book a flight from New Hampshire to St. Louis
Have a flexible travel schedule? Discover the best time to fly to St. Louis from New Hampshire with our price prediction graph.
MHT-STL
PWM-STL
BOS-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 New Hampshire to St. Louis
USNH-STL
MHT-STL
PWM-STL
BOS-STL
What is the cheapest month to book a flight from New Hampshire to St. Louis?
Currently, August is the cheapest month in which you can book a flight from New Hampshire to St. Louis (average of $179). Flying from New Hampshire to St. Louis in March is currently the most expensive (average of $453). 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.
How much does it cost to fly round-trip from New Hampshire to St. Louis?
Related info for your journey
Find useful and relevant information for your journey from New Hampshire 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
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Alternative routes for New Hampshire 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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New Hampshire and St. Louis flights
Browse other New Hampshire and St. Louis flight options. Last updated on April 1, 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 April 1, 2026.
New Hampshire to St. Louis flights
Consider these flights traveling from New Hampshire to St. Louis.
Top 2 airlines flying from New Hampshire to St. Louis
Discover the top 2 airlines that operate flights from New Hampshire 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 April 1, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$200 | Average$446 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$278 | Average$386 | FlexibilityNo cancel fee | On-time71% |