$170+ Cheap flights from New Hampshire to St. Louis (STL)
This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/20. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — STL
Oct 28 — Nov 41
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
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
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
Cheapest
Best
Last-minute
One-way
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 September 28, 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 September 28, 2026.
This Southwest deal was found by Cheapflights users on 9/25. 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.
Wed 12/212:45 pm -
1 stop6h 20m
Thu 12/102:25 pm -
1 stop5h 50m
Deal found 9/25![Southwest logo]()
$339
This Southwest deal was found by Cheapflights users on 9/27. 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 11/177:15 am -
1 stop6h 25m
Thu 11/196:35 am -
1 stop4h 30m
Deal found 9/27![Southwest logo]()
$376
This American Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:00 am -
1 stop5h 41m
Sun 10/255:27 pm -
1 stop5h 46m
Deal found 9/23![American Airlines logo]()
$388
This American Airlines deal was found by Cheapflights users on 9/25. 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.
Fri 10/235:05 pm -
1 stop8h 14m
Fri 10/305:08 pm -
1 stop6h 15m
Deal found 9/25![American Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 9/25. 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.
Fri 10/236:55 pm -
1 stop5h 25m
Fri 10/304:30 pm -
2 stops6h 25m
Deal found 9/25![Southwest logo]()
$394
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Tue 11/172:38 pm -
2 stops8h 02m
Thu 11/196:00 am -
2 stops7h 03m
Deal found 9/27![United Airlines logo]()
$398
This American Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:00 am -
1 stop7h 46m
Wed 10/2810:48 am -
1 stop5h 02m
Deal found 9/24![American Airlines logo]()
$407
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 September 28, 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 September 28, 2026.
This Southwest deal was found by Cheapflights users on 9/25. 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.
Wed 12/212:45 pm -
2 stops7h 40m
Thu 12/106:20 am -
2 stops7h 40m
Deal found 9/25![Southwest logo]()
$349
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Tue 11/172:38 pm -
2 stops8h 02m
Thu 11/196:00 am -
2 stops7h 03m
Deal found 9/27![United Airlines logo]()
$398
This Southwest deal was found by Cheapflights users on 9/27. 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 11/177:15 am -
1 stop6h 25m
Thu 11/196:35 am -
1 stop4h 30m
Deal found 9/27![Southwest logo]()
$376
This Southwest deal was found by Cheapflights users on 9/25. 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.
Mon 1/115:10 pm -
1 stop4h 55m
Fri 1/155:00 am -
1 stop6h 10m
Deal found 9/25![Southwest logo]()
$417
This United Airlines deal was found by Cheapflights users on 9/27. 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.
Tue 11/109:25 am -
2 stops10h 58m
Wed 11/111:08 pm -
2 stops9h 51m
Deal found 9/27![United Airlines logo]()
$529
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:40 am -
1 stop4h 40m
Thu 10/159:00 pm -
1 stop10h 15m
Deal found 9/23![Southwest logo]()
$469
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:25 am -
2 stops7h 50m
Sun 10/255:45 am -
1 stop4h 30m
Deal found 9/23![Southwest logo]()
$471
Last-minute flights from New Hampshire to St. LouisDiscover last-minute flight deals from New Hampshire to St. Louis. Data last updated September 28, 2026 and is based on user searches.
Discover last-minute flight deals from New Hampshire to St. Louis. Data last updated September 28, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 10/1010:32 am -
1 stop7h 28m
Sun 10/185:00 am -
1 stop6h 13m
Deal found 9/24![American Airlines logo]()
$497
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/115:40 am -
1 stop4h 40m
Thu 10/159:00 pm -
1 stop10h 15m
Deal found 9/23![Southwest logo]()
$469
This American Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/156:00 am -
1 stop5h 41m
Sun 10/185:00 am -
1 stop6h 13m
Deal found 9/24![American Airlines logo]()
$508
This American Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/165:05 pm -
1 stop8h 14m
Sun 10/185:00 am -
1 stop6h 13m
Deal found 9/24![American Airlines logo]()
$533
This American Airlines deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/226:00 am -
1 stop5h 41m
Sun 10/255:27 pm -
1 stop5h 46m
Deal found 9/23![American Airlines logo]()
$388
This Southwest deal was found by Cheapflights users on 9/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/225:25 am -
2 stops7h 50m
Sun 10/255:45 am -
1 stop4h 30m
Deal found 9/23![Southwest logo]()
$471
This American Airlines deal was found by Cheapflights users on 9/25. 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.
Fri 10/235:05 pm -
1 stop8h 14m
Fri 10/305:08 pm -
1 stop6h 15m
Deal found 9/25![American Airlines logo]()
$389
This Southwest deal was found by Cheapflights users on 9/25. 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.
Fri 10/236:55 pm -
1 stop5h 25m
Fri 10/304:30 pm -
2 stops6h 25m
Deal found 9/25![Southwest logo]()
$394
This American Airlines deal was found by Cheapflights users on 9/24. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/266:00 am -
1 stop7h 46m
Wed 10/2810:48 am -
1 stop5h 02m
Deal found 9/24![American Airlines logo]()
$407
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 September 28, 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 September 28, 2026.
This Southwest deal was found by Cheapflights users on 9/25. 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.
Tue 10/205:20 am -
1 stop5h 00m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Southwest logo]()
$170
This United Airlines deal was found by Cheapflights users on 9/25. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/202:50 pm -
2 stops7h 31m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![United Airlines logo]()
$204
This American Airlines deal was found by Cheapflights users on 9/25. 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.
Mon 10/195:05 pm -
1 stop8h 14m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![American Airlines logo]()
$269
This Southwest deal was found by Cheapflights users on 9/25. 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.
Mon 10/195:25 am -
2 stops7h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Southwest logo]()
$304
This Kiwi.com deal was found by Cheapflights users on 9/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:14 pm -
3 stops51h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Multiple Airlines logo]()
$340
This Southwest deal was found by Cheapflights users on 9/26. 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.
Mon 10/125:25 pm -
2 stops8h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Southwest logo]()
$429
This Kiwi.com deal was found by Cheapflights users on 9/26. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/123:14 pm -
3 stops51h 26m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Multiple Airlines logo]()
$481
This United Airlines deal was found by Cheapflights users on 9/26. 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.
Sun 11/299:25 am -
2 stops13h 15m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![United Airlines logo]()
$850
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 September 28, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (Southwest) |
One-way from | $170 (Southwest) |
Popular in | July |
Cheapest in | January |
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 7,457,451 searches. Data last updated September 28, 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
Quickest round-trip
ManchesterSt. Louis
MHT Manchester - STL Lambert-St Louis
MHTSTL
Manchester
Tue 10/20
2:50 pm-9:21 pm
2 stops7h 31m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$204
ManchesterSt. Louis
MHT Manchester - STL Lambert-St Louis
MHTSTL
Manchester
Tue 10/20
6:45 am-3:00 pm
2 stops9h 15m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$234
ManchesterSt. Louis
MHT Manchester - STL Lambert-St Louis
MHTSTL
Manchester
Mon 10/19
5:25 am-12:15 pm
2 stops7h 50m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$304
ManchesterSt. Louis
MHT Manchester - STL Lambert-St Louis
MHTSTL
Manchester
Mon 10/19
3:14 pm-5:40 pm
3 stops51h 26m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$345
ManchesterSt. Louis
MHT Manchester - STL Lambert-St Louis
MHTSTL
Manchester
Wed 12/2
12:45 pm-7:25 pm
2 stops7h 40m
Lambert-St Louis
Thu 12/10
6:20 am-3:00 pm
2 stops7h 40m
$349
ManchesterSt. Louis
MHT Manchester - STL Lambert-St Louis
MHTSTL
Manchester
Tue 11/17
7:15 am-12:40 pm
1 stop6h 25m
Lambert-St Louis
Thu 11/19
6:35 am-12:05 pm
1 stop4h 30m
$376
ManchesterSt. Louis
MHT Manchester - STL Lambert-St Louis
MHTSTL
Manchester
Tue 11/17
2:38 pm-9:40 pm
2 stops8h 02m
Lambert-St Louis
Thu 11/19
6:00 am-2:03 pm
2 stops7h 03m
$398
ManchesterSt. Louis
MHT Manchester - STL Lambert-St Louis
MHTSTL
Manchester
Mon 1/11
5:10 pm-9:05 pm
1 stop4h 55m
Lambert-St Louis
Fri 1/15
5:00 am-12:10 pm
1 stop6h 10m
$417
ManchesterSt. Louis
MHT Manchester - STL Lambert-St Louis
MHTSTL
Manchester
Mon 10/12
5:25 pm-12:35 am
2 stops8h 10m
Lambert-St Louis
Wed 12/31
12:00 am-1:00 am
Nonstop0h 00m
$429
ManchesterSt. Louis
MHT Manchester - STL Lambert-St Louis
MHTSTL
Manchester
Sun 10/11
5:40 am-9:20 am
1 stop4h 40m
Lambert-St Louis
Thu 10/15
9:00 pm-8:15 am
1 stop10h 15m
$469
Showing 1-10 of 13 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
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
What is the cheapest month to book a flight from New Hampshire to St. Louis?
Currently, November is the cheapest month in which you can book a flight from New Hampshire to St. Louis (average of $356). Flying from New Hampshire to St. Louis in March is currently the most expensive (average of $802). 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?
Airfare is below average for this route at the moment.
New Hampshire to St. Louis flights typically cost between $348 and $385 in December.The cheapest round-trip price found within the last 5 days was $339 on Southwest (Dec 2-Dec 10).
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 locationsFairview Heights
O'Fallon
Fenton
Swansea
Eureka
Wentzville
Maryland Heights
Collinsville
Edwardsville
Glencoe
Chesterfield
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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 New Hampshire to St. Louis, based on your preferred cabin class, be it economy, premium economy, business, or first class.
New Hampshire and St. Louis flights
Browse other New Hampshire and St. Louis flight options. Last updated on September 28, 2026.
Popular flight searches
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Other flights to St. Louis
Explore flights to St. Louis departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on September 28, 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 7,457,451 searches. Data last updated September 28, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$286 | Average$426 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$287 | Average$381 | FlexibilityNo cancel fee | On-time71% |