$166+ Cheap flights from St. Louis (STL) to New Hampshire
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 10/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MHT
Oct 30 — Nov 61
Round-trip
1 adult, Economy
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Find cheap flights from St. Louis to New Hampshire with Cheapflights
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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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Best
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One-way
Cheapest flights from St. Louis to New HampshireExplore the most affordable flight options available from St. Louis to New Hampshire. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 30, 2026.
Explore the most affordable flight options available from St. Louis to New Hampshire. Find the lowest fares from popular airlines and budget airlines, with prices last updated on September 30, 2026.
This American Airlines deal was found by Cheapflights users on 9/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:00 am -
1 stop4h 34m
Sat 11/146:00 am -
1 stop7h 43m
Deal found 9/29![American Airlines 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.
Wed 11/112:20 pm -
2 stops6h 50m
Sat 11/147:45 am -
1 stop4h 55m
Deal found 9/27![Southwest logo]()
$344
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 10/273:20 pm -
1 stop6h 25m
Fri 10/305:25 pm -
1 stop6h 55m
Deal found 9/25![Southwest logo]()
$364
This Southwest deal was found by Cheapflights users on 9/28. 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.
Fri 12/114:40 pm -
2 stops6h 10m
Tue 12/155:50 pm -
1 stop5h 05m
Deal found 9/28![Southwest logo]()
$369
This Southwest deal was found by Cheapflights users on 9/28. 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.
Tue 12/156:35 am -
1 stop4h 30m
Mon 12/2110:40 am -
1 stop4h 50m
Deal found 9/28![Southwest logo]()
$383
Best flights from St. Louis to New HampshireDiscover carefully curated flight deals from St. Louis to New Hampshire that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 30, 2026.
Discover carefully curated flight deals from St. Louis to New Hampshire that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 30, 2026.
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/117:00 am -
1 stop4h 34m
Sat 11/146:00 am -
1 stop7h 43m
Deal found 9/27![American Airlines 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.
Wed 11/112:20 pm -
2 stops6h 50m
Sat 11/147:45 am -
1 stop4h 55m
Deal found 9/27![Southwest logo]()
$344
This United Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 11/108:00 am -
1 stop5h 03m
Wed 11/119:25 am -
2 stops13h 15m
Deal found 9/28![United Airlines logo]()
$587
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.
Sat 10/106:05 am -
1 stop4h 20m
Wed 10/145:20 am -
1 stop7h 15m
Deal found 9/25![Southwest logo]()
$537
This Southwest deal was found by Cheapflights users on 9/29. 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.
Sun 10/184:25 pm -
2 stops6h 30m
Fri 10/2311:30 am -
2 stops8h 35m
Deal found 9/29![Southwest logo]()
$604
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.
Wed 12/98:30 am -
1 stop4h 33m
Thu 12/172:35 pm -
2 stops9h 24m
Deal found 9/26![United Airlines logo]()
$722
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.
Sun 10/255:45 am -
2 stops8h 10m
Sun 11/13:10 pm -
2 stops8h 35m
Deal found 9/27![Southwest logo]()
$613
This United Airlines deal was found by Cheapflights users on 9/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/159:30 am -
2 stops8h 31m
Mon 10/197:41 pm -
2 stops19h 36m
Deal found 9/29![United Airlines logo]()
$742
Last-minute flights from St. Louis to New HampshireDiscover last-minute flight deals from St. Louis to New Hampshire. Data last updated September 30, 2026 and is based on user searches.
Discover last-minute flight deals from St. Louis to New Hampshire. Data last updated September 30, 2026 and is based on user searches.
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.
Sat 10/106:05 am -
1 stop4h 20m
Wed 10/145:20 am -
1 stop7h 15m
Deal found 9/25![Southwest logo]()
$537
This American 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/155:08 pm -
1 stop6h 15m
Mon 10/191:55 pm -
1 stop11h 24m
Deal found 9/26![American Airlines logo]()
$534
This American Airlines deal was found by Cheapflights users on 9/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 10/185:08 pm -
1 stop6h 15m
Fri 10/231:55 pm -
1 stop8h 02m
Deal found 9/29![American Airlines logo]()
$463
This Southwest deal was found by Cheapflights users on 9/29. 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.
Sun 10/185:45 am -
1 stop4h 30m
Fri 10/2311:30 am -
2 stops8h 35m
Deal found 9/29![Southwest logo]()
$531
This American Airlines deal was found by Cheapflights users on 9/29. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/195:08 pm -
1 stop6h 15m
Sat 10/247:01 am -
1 stop6h 34m
Deal found 9/29![American Airlines logo]()
$438
This Southwest deal was found by Cheapflights users on 9/29. 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.
Mon 10/191:00 pm -
1 stop4h 15m
Sat 10/245:45 am -
2 stops8h 15m
Deal found 9/29![Southwest logo]()
$502
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.
Sun 10/255:45 am -
1 stop4h 30m
Sun 11/16:35 pm -
1 stop5h 10m
Deal found 9/27![Southwest logo]()
$466
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 10/273:20 pm -
1 stop6h 25m
Fri 10/305:25 pm -
1 stop6h 55m
Deal found 9/25![Southwest logo]()
$364
One-way flights from St. Louis to New HampshireSearch for one-way flight options from St. Louis to New Hampshire. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
Search for one-way flight options from St. Louis to New Hampshire. Find affordable one-way fares based on user searches. Data last updated September 30, 2026.
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 10/196:35 pm -
3 stops40h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Multiple Airlines logo]()
$166
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.
Sat 10/171:09 pm -
1 stop4h 52m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![United Airlines logo]()
$170
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 10/197:50 pm -
2 stops11h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/26![Southwest logo]()
$181
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.
Sat 11/2111:24 am -
2 stops10h 35m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![American Airlines logo]()
$213
This Southwest deal was found by Cheapflights users on 9/29. 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.
Fri 1/155:55 am -
1 stop4h 10m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/29![Southwest logo]()
$219
This United Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 10/298:00 am -
1 stop5h 03m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$225
This Southwest deal was found by Cheapflights users on 9/28. 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.
Mon 12/284:50 pm -
1 stop4h 20m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![Southwest logo]()
$249
This United Airlines deal was found by Cheapflights users on 9/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/301:08 pm -
2 stops9h 51m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/28![United Airlines logo]()
$255
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.
Sat 11/215:20 pm -
1 stop5h 50m
Wed 12/3112:00 am -
Nonstop0h 00m
Deal found 9/25![Southwest logo]()
$257
Find flight deals from St. Louis to New Hampshire
Keep the following information in mind while searching for St. Louis to New Hampshire flight deals. Data was last updated September 30, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $339 (American Airlines) |
One-way from | $166 (Kiwi.com) |
Popular in | February |
Cheapest in | September |
Average price | $442 |
Cheapflights Fare Finder
Customize your flight search to find flights from St. Louis to New Hampshire 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 30, 2026.
Use the filters below to find and compare flights from St. Louis to New Hampshire that are best for you.
Fly from
Fly to
Route
Depart
Return
Cheapest round-trip
St. LouisManchester
STL Lambert-St Louis - MHT Manchester
STLMHT
Lambert-St Louis
Tue 10/20
2:25 pm-9:10 pm
1 stop5h 45m
Manchester
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$170
St. LouisManchester
STL Lambert-St Louis - MHT Manchester
STLMHT
Lambert-St Louis
Tue 10/20
9:04 am-7:01 pm
2 stops8h 57m
Manchester
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$175
St. LouisManchester
STL Lambert-St Louis - MHT Manchester
STLMHT
Lambert-St Louis
Sat 11/21
11:24 am-10:59 pm
2 stops10h 35m
Manchester
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$213
St. LouisManchester
STL Lambert-St Louis - MHT Manchester
STLMHT
Lambert-St Louis
Fri 1/15
3:00 pm-10:45 pm
2 stops6h 45m
Manchester
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$224
St. LouisManchester
STL Lambert-St Louis - MHT Manchester
STLMHT
Lambert-St Louis
Thu 10/29
8:00 am-2:03 pm
1 stop5h 03m
Manchester
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$225
St. LouisManchester
STL Lambert-St Louis - MHT Manchester
STLMHT
Lambert-St Louis
Sat 1/16
8:25 am-2:07 pm
1 stop4h 42m
Manchester
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$225
Quickest round-trip
St. LouisManchester
STL Lambert-St Louis - MHT Manchester
STLMHT
Lambert-St Louis
Mon 12/28
4:50 pm-10:10 pm
1 stop4h 20m
Manchester
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$249
St. LouisManchester
STL Lambert-St Louis - MHT Manchester
STLMHT
Lambert-St Louis
Fri 10/30
1:08 pm-11:59 pm
2 stops9h 51m
Manchester
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$255
St. LouisManchester
STL Lambert-St Louis - MHT Manchester
STLMHT
Lambert-St Louis
Sat 11/21
5:20 pm-12:10 am
1 stop5h 50m
Manchester
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$257
St. LouisManchester
STL Lambert-St Louis - MHT Manchester
STLMHT
Lambert-St Louis
Fri 11/20
10:53 am-11:59 pm
2 stops12h 06m
Manchester
Wed 12/31
12:00 am-11:00 pm
Nonstop0h 00m
$279
Showing 1-10 of 18 resultsSorted by cheapest first
Best time to book a flight from St. Louis to New Hampshire
Have a flexible travel schedule? Discover the best time to fly to New Hampshire from St. Louis with our price prediction graph.
STL-MHT
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.
Cheapflights Insights
Everything you need to know about your flight from St. Louis to New Hampshire
STL-USNH
STL-MHT
What is the cheapest month to book a flight from St. Louis to New Hampshire?
Currently, May is the cheapest month in which you can book a flight from St. Louis to New Hampshire (average of $318). Flying from St. Louis to New Hampshire in February is currently the most expensive (average of $1,046). 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 St. Louis to New Hampshire?
Airfare is below average for this route at the moment.
St. Louis to New Hampshire flights typically cost between $425 and $489 in November.The cheapest round-trip price found within the last 5 days was $339 on American Airlines (Nov 11-Nov 14).
Reviews of airlines servicing New Hampshire
Get insights into the airlines that provide service to New Hampshire. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to New Hampshire. Reviews last updated September 30, 2026.
Get a feel of what it's like to fly with Southwest and American Airlines from St. Louis to New Hampshire by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Food
7.0
Overall
8.0
Comfort
8.0
Boarding
8.1
Entertainment
7.5
Crew
8.6
Reviews
1 / 20
10.0
ExcellentEdward,Sep 2026
MCO - BWI
Related info for your journey
Find useful and relevant information for your journey from St. Louis to New Hampshire. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
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Alternative routes for St. Louis to New Hampshire
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Complete your trip
Complete your trip to New Hampshire by adding a car rental and/or hotel reservation to your travel itinerary.
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St. Louis and New Hampshire flights
Browse other St. Louis and New Hampshire flight options. Last updated on September 30, 2026.
Popular flight searches
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St. Louis to New Hampshire flights
Consider these flights traveling from St. Louis to New Hampshire.
Top 2 airlines flying from St. Louis to New Hampshire
Discover the top 2 airlines that operate flights from St. Louis to New Hampshire. 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 30, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$306 | Average$454 | FlexibilityNo cancel fee | On-time63% | |
| Cheapest$346 | Average$472 | FlexibilityNo cancel fee | On-time71% |