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$76+ 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 5/16. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — STL
Feb 28 — Mar 71
Fri 2/28
Fri 3/7
1 adult, Economy
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Cheap 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 February 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$217
(American Airlines)

One-way from

$76
(Booking.com)

Popular in

March

Cheapest in

September

Average price

$442
Provider with most accurate pricing for Boston Logan Intl-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Boston Logan Intl-Lambert-St Louis flights.
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From New Hampshire to Lambert-St Louis
Search Deals
One-way flight from New Hampshire to Lambert-St Louis
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Highest demand for flights based on searches. 4% potential increase in price ($22 potential increase over avg. RT price).
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Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
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Average for round-trip flights in February 2025
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Find flight deals from New Hampshire to St. Louis

Cheapest flights from New Hampshire to St. Louis
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 February 23, 2025.

This American Airlines deal was found by Cheapflights users on 2/22. 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.
Mon 3/105:05 pmMHT - STL
1 stop7h 51mAmerican Airlines
Wed 3/126:10 amSTL - MHT
1 stop7h 18mAmerican Airlines
Deal found 2/22$217
This Southwest deal was found by Cheapflights users on 2/22. 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.
Mon 3/101:45 pmMHT - STL
1 stop4h 55mSouthwest
Wed 3/128:20 amSTL - MHT
2 stops5h 25mSouthwest
Deal found 2/22$266
This Mytrip deal was found by Cheapflights users on 2/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/85:15 amBOS - STL
3 stops31h 30mMultiple Airlines
Tue 4/1512:15 pmSTL - BOS
3 stops32h 38mMultiple Airlines
Deal found 2/22$305
This United Airlines deal was found by Cheapflights users on 2/21. 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 3/196:00 amMHT - STL
2 stops9h 23mUnited Airlines
Wed 3/268:00 amSTL - MHT
2 stops7h 40mUnited Airlines
Deal found 2/21$307
This Mytrip deal was found by Cheapflights users on 2/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/610:08 amPWM - STL
1 stop24h 52mFrontier
Wed 3/195:24 pmSTL - PWM
1 stop14h 44mFrontier
Deal found 2/22$313
This American Airlines deal was found by Cheapflights users on 2/23. 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.
Sat 5/102:02 pmPWM - STL
1 stop5h 05mAmerican Airlines
Tue 5/135:12 amSTL - PWM
1 stop7h 10mAmerican Airlines
Deal found 2/23$317
This American Airlines deal was found by Cheapflights users on 2/23. 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.
Wed 3/266:30 amBOS - STL
Nonstop3h 28mAmerican Airlines
Sat 3/296:00 amSTL - BOS
1 stop9h 55mAmerican Airlines
Deal found 2/23$318
This Booking.com deal was found by Cheapflights users on 2/22. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/16:00 amBOS - STL
1 stop18h 43mFrontier
Thu 3/65:24 pmSTL - BOS
1 stop13h 49mFrontier
Deal found 2/22$320
This United Airlines deal was found by Cheapflights users on 2/21. 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 3/2511:01 amBOS - STL
1 stop5h 30mUnited Airlines
Wed 3/266:30 amSTL - BOS
2 stops11h 04mUnited Airlines
Deal found 2/21$322
This Delta deal was found by Cheapflights users on 2/22. 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 5/219:05 amBOS - STL
1 stop5h 14mDelta
Sat 5/243:40 pmSTL - BOS
1 stop6h 15mDelta
Deal found 2/22$339
This Delta deal was found by Cheapflights users on 2/22. 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.
Fri 4/116:15 amPWM - STL
1 stop6h 41mDelta
Tue 4/159:06 amSTL - PWM
1 stop5h 54mDelta
Deal found 2/22$342
This Mytrip deal was found by Cheapflights users on 2/22. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/98:07 pmPWM - STL
2 stops22h 09mMultiple Airlines
Sun 4/136:11 pmSTL - PWM
2 stops22h 27mMultiple Airlines
Deal found 2/22$344

Find flights from New Hampshire to St. Louis within your budget

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 February 23, 2025.

Fly from

New Hampshire

Fly to

St. Louis

Route

Depart

Return

Price

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Mon 3/10

5:05 pm-11:56 pm

1 stop7h 51m

Lambert-St Louis

Wed 3/12

6:10 am-2:28 pm

1 stop7h 18m

$217

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Mon 3/10

1:45 pm-5:40 pm

1 stop4h 55m

Lambert-St Louis

Wed 3/12

8:20 am-2:45 pm

2 stops5h 25m

$266

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 4/8

5:15 am-11:45 am

3 stops31h 30m

Lambert-St Louis

Tue 4/15

12:15 pm-9:53 pm

3 stops32h 38m

$305

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Wed 3/19

6:00 am-2:23 pm

2 stops9h 23m

Lambert-St Louis

Wed 3/26

8:00 am-4:40 pm

2 stops7h 40m

$307

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Thu 3/6

10:08 am-10:00 am

1 stop24h 52m

Lambert-St Louis

Wed 3/19

5:24 pm-9:08 am

1 stop14h 44m

$313

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Sat 5/10

2:02 pm-6:07 pm

1 stop5h 05m

Lambert-St Louis

Tue 5/13

5:12 am-1:22 pm

1 stop7h 10m

$317

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 3/26

6:30 am-8:58 am

Nonstop3h 28m

Lambert-St Louis

Sat 3/29

6:00 am-4:55 pm

1 stop9h 55m

$318

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Tue 3/25

11:01 am-3:31 pm

1 stop5h 30m

Lambert-St Louis

Wed 3/26

6:30 am-6:34 pm

2 stops11h 04m

$322

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 5/21

9:05 am-1:19 pm

1 stop5h 14m

Lambert-St Louis

Sat 5/24

3:40 pm-10:55 pm

1 stop6h 15m

$339

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Fri 4/11

6:15 am-11:56 am

1 stop6h 41m

Lambert-St Louis

Tue 4/15

9:06 am-4:00 pm

1 stop5h 54m

$342

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/22

Showing 1-10 of 27 results
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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.
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.

Travel insights for flights from New Hampshire to St. Louis

Get recent, data-driven insights about flights from New Hampshire to St. Louis including ideal travel times, pricing trends, and more.

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 $311). Flying from New Hampshire to St. Louis in March is currently the most expensive (average of $356). 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 NH to STL?

Find hourly flight availability from New Hampshire to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated February 23, 2025.

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from New Hampshire to St. Louis as you normally would.

Rainfall in St. Louis by month

Plan your trip to St. Louis by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

Temperature in St. Louis by month

Plan your trip to St. Louis by taking into account the average temperature totals by month.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

Reviews of airlines servicing St. Louis

Get insights into the airlines that provide service to St. Louis. 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 St. Louis. Reviews last updated February 23, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from New Hampshire to St. Louis by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Southwest
8.1
Very good
4,387 reviews
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Alaska Airlines
8.0
Very good
9,707 reviews
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

Delta
8.0
Very good
8,191 reviews
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

United Airlines
7.4
Good
8,746 reviews
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,387 reviews

Boarding

8.2

Entertainment

7.6

Crew

8.7

Overall

8.1

Comfort

8.1

Food

7.1

Reviews

1 / 20

2.0
Mediocre

Anonymous,Feb 2025

MCO - STL

Cancelled at last minute, SWA unable to assist in formulating alternate plans. Wound up renting a car and driving 13 hours to beat bad weather forecast at home. Not SWA’s fault that there was significant bad weather across the country.

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.

  • What airport do you fly into for flights to St. Louis from New Hampshire?

    Lambert-St Louis (STL), located 12.7 mi from the city center, is the airport you fly into when you book flights from New Hampshire to St. Louis.

  • What are the cheapest airlines to fly from New Hampshire to St. Louis one-way?

    The cheapest airlines for a one-way flight from New Hampshire to St. Louis are Frontier ($76), Spirit Airlines ($112), and Delta ($119).

  • What are the most popular routes from New Hampshire to St. Louis?

    When deciding which route to take from New Hampshire to St. Louis consider Boston Logan Intl - Lambert-St Louis, Manchester - Lambert-St Louis or Portland - Lambert-St Louis as they are the most popular.

  • Can I find deals for flights from New Hampshire to St. Louis that include hotel bookings?

    Yes. In addition to deals on New Hampshire to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from New Hampshire to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from New Hampshire to St. Louis.

  • Can I find deals for business class flights from New Hampshire to St. Louis?

    Yes. Cheapflights offers flight deals from New Hampshire to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • 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 $311). Flying from New Hampshire to St. Louis in March is currently the most expensive (average of $356). 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.

See more FAQs

Traveling to a place near New Hampshire?

Book flights to New Hampshire if you plan to visit one of these locations
Fenton
Fairview Heights
Maryland Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Alton
Farmington
Chesterfield

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Alternative routes for New Hampshire to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
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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 February 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$271Average$426FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$316Average$423FlexibilityNo cancel feeOn-time63%
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