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St. Louis

$134+ 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 6/25. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — STL
May 6 — May 131
Tue 5/6
Tue 5/13
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 May 1, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$267
(American Airlines)

One-way from

$134
(Southwest)

Popular in

April

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
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One-way flight from New Hampshire to Lambert-St Louis
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Highest demand for flights based on searches. 8% potential increase in price ($39 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in May 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 May 1, 2025.

This Booking.com deal was found by Cheapflights users on 4/30. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 5/59:30 pmPWM - STL
1 stop27h 36mFrontier
Fri 5/95:55 pmSTL - PWM
1 stop23h 31mFrontier
Deal found 4/30$248
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 5/215:29 amMHT - STL
1 stop5h 13mAmerican Airlines
Sat 5/245:00 amSTL - MHT
1 stop5h 51mAmerican Airlines
Deal found 4/30$267
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 5/214:01 pmPWM - STL
1 stop5h 57mAmerican Airlines
Wed 5/286:00 amSTL - PWM
1 stop5h 34mAmerican Airlines
Deal found 4/30$285
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/286:05 amPWM - STL
2 stops9h 30mDelta
Wed 6/43:40 pmSTL - PWM
1 stop6h 41mDelta
Deal found 4/30$290
This United Airlines deal was found by Cheapflights users on 5/1. 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.
Fri 9/265:35 pmPWM - STL
1 stop7h 09mUnited Airlines
Tue 9/303:30 pmSTL - PWM
1 stop5h 14mUnited Airlines
Deal found 5/1$327
This Mytrip deal was found by Cheapflights users on 4/30. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 5/2210:30 amBOS - STL
2 stops9h 11mMultiple Airlines
Sun 5/2510:10 amSTL - BOS
1 stop12h 19mMultiple Airlines
Deal found 4/30$332
This Delta deal was found by Cheapflights users on 4/30. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 8/155:25 amBOS - STL
1 stop5h 04mDelta
Sat 8/167:20 amSTL - BOS
1 stop6h 54mDelta
Deal found 4/30$333
This American Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 6/257:15 amBOS - STL
Nonstop3h 16mAmerican Airlines
Sat 6/284:17 pmSTL - BOS
1 stop5h 30mAmerican Airlines
Deal found 4/30$337
This United Airlines deal was found by Cheapflights users on 4/29. 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.
Fri 9/53:16 pmBOS - STL
1 stop5h 23mUnited Airlines
Sun 9/76:00 amSTL - BOS
1 stop6h 24mUnited Airlines
Deal found 4/29$340
This Southwest deal was found by Cheapflights users on 4/30. 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 6/65:40 pmPWM - STL
1 stop6h 40mSouthwest
Mon 6/95:05 pmSTL - PWM
1 stop6h 00mSouthwest
Deal found 4/30$344
This Southwest deal was found by Cheapflights users on 4/30. 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 6/45:55 pmBOS - STL
Nonstop3h 05mSouthwest
Fri 6/62:25 pmSTL - BOS
Nonstop2h 35mSouthwest
Deal found 4/30$352
This United Airlines deal was found by Cheapflights users on 4/30. 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.
Wed 5/2812:45 pmMHT - STL
2 stops11h 00mUnited Airlines
Wed 6/48:15 amSTL - MHT
1 stop5h 49mUnited Airlines
Deal found 4/30$352

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 May 1, 2025.
Use the filters below to find and compare flights from New Hampshire to St. Louis that are best for you.

Fly from

New Hampshire

Fly to

St. Louis

Route

Depart

Return

Price

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Wed 5/21

5:29 am-9:42 am

1 stop5h 13m

Lambert-St Louis

Sat 5/24

5:00 am-11:51 am

1 stop5h 51m

$267

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Wed 5/21

4:01 pm-8:58 pm

1 stop5h 57m

Lambert-St Louis

Wed 5/28

6:00 am-12:34 pm

1 stop5h 34m

$285

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Wed 5/28

6:05 am-2:35 pm

2 stops9h 30m

Lambert-St Louis

Wed 6/4

3:40 pm-11:21 pm

1 stop6h 41m

$290

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Fri 9/26

5:35 pm-11:44 pm

1 stop7h 09m

Lambert-St Louis

Tue 9/30

3:30 pm-9:44 pm

1 stop5h 14m

$327

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Thu 5/22

10:30 am-6:41 pm

2 stops9h 11m

Lambert-St Louis

Sun 5/25

10:10 am-11:29 pm

1 stop12h 19m

$332

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 8/15

5:25 am-9:29 am

1 stop5h 04m

Lambert-St Louis

Sat 8/16

7:20 am-3:14 pm

1 stop6h 54m

$333

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 6/25

7:15 am-9:31 am

Nonstop3h 16m

Lambert-St Louis

Sat 6/28

4:17 pm-10:47 pm

1 stop5h 30m

$337

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 9/5

3:16 pm-7:39 pm

1 stop5h 23m

Lambert-St Louis

Sun 9/7

6:00 am-1:24 pm

1 stop6h 24m

$340

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Fri 6/6

5:40 pm-11:20 pm

1 stop6h 40m

Lambert-St Louis

Mon 6/9

5:05 pm-12:05 am

1 stop6h 00m

$344

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Wed 6/4

5:55 pm-8:00 pm

Nonstop3h 05m

Lambert-St Louis

Fri 6/6

2:25 pm-6:00 pm

Nonstop2h 35m

$352

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/30

Showing 1-10 of 32 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.

Cheapflights Insights

Everything you need to know about your flight from New Hampshire to St. Louis

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 May 1, 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 May 1, 2025.
Get a feel of what it's like to fly with Alaska Airlines, Southwest 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.
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,972 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,293 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,934 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
9,972 reviews

Boarding

8.1

Comfort

7.9

Overall

8.0

Entertainment

7.1

Food

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

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 Southwest ($134), American Airlines ($143), and Delta ($148).

  • 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, Portland - Lambert-St Louis or Manchester - 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
Maryland Heights
Fairview Heights
Collinsville
Wentzville
Eureka
St. Peters
Festus
Glencoe
Alton
Farmington
O'Fallon

Browse thousands of different options on Cheapflights for your next trip

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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 May 1, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$252Average$394FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$264Average$431FlexibilityNo cancel feeOn-time63%

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