HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
St. Louis

$68+ 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 1/17. Fares are subject to change and may not be available on all flights or dates of travel.
MHT — STL
Nov 22 — Nov 291
Sat 11/22
Sat 11/29
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

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.

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 October 23, 2025.

This Southwest deal was found by Cheapflights users on 10/20. 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 12/612:40 pmMHT - STL
1 stop7h 50mSouthwest
Sat 12/136:05 amSTL - MHT
1 stop8h 20mSouthwest
Deal found 10/20$192
This Southwest deal was found by Cheapflights users on 10/23. 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.
Tue 12/165:30 amPWM - STL
2 stops9h 20mSouthwest
Tue 1/66:50 amSTL - PWM
1 stop4h 20mSouthwest
Deal found 10/23$227
This Southwest deal was found by Cheapflights users on 10/23. 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.
Fri 12/55:30 amPWM - STL
1 stop11h 20mSouthwest
Tue 12/96:05 amSTL - PWM
1 stop5h 05mSouthwest
Deal found 10/23$256
This American Airlines deal was found by Cheapflights users on 10/21. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:08 pmMHT - STL
1 stop6h 00mAmerican Airlines
Tue 12/169:53 amSTL - MHT
1 stop5h 50mAmerican Airlines
Deal found 10/21$272
This American Airlines deal was found by Cheapflights users on 10/23. 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 12/115:16 pmMHT - STL
1 stop5h 31mAmerican Airlines
Sun 12/145:02 amSTL - MHT
1 stop5h 38mAmerican Airlines
Deal found 10/23$287
This United Airlines deal was found by Cheapflights users on 10/21. 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 12/306:46 pmPWM - STL
1 stop5h 57mUnited Airlines
Wed 1/78:05 amSTL - PWM
2 stops9h 45mUnited Airlines
Deal found 10/21$288
This Delta deal was found by Cheapflights users on 10/23. 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 Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/56:08 amPWM - STL
2 stops12h 02mDelta
Tue 12/96:00 amSTL - PWM
2 stops9h 07mDelta
Deal found 10/23$293
This Southwest deal was found by Cheapflights users on 10/21. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/1212:30 pmMHT - STL
2 stops9h 05mSouthwest
Tue 12/168:25 amSTL - MHT
2 stops7h 10mSouthwest
Deal found 10/21$310
This American Airlines deal was found by Cheapflights users on 10/23. 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.
Tue 11/1812:26 pmPWM - STL
1 stop5h 10mAmerican Airlines
Thu 11/206:02 amSTL - PWM
1 stop4h 44mAmerican Airlines
Deal found 10/23$327
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 11/610:21 amBOS - STL
2 stops23h 46mMultiple Airlines
Sun 11/911:23 amSTL - BOS
1 stop20h 37mMultiple Airlines
Deal found 10/21$328
This Kiwi.com deal was found by Cheapflights users on 10/21. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 11/151:36 pmBOS - STL
1 stop24h 41mMultiple Airlines
Mon 11/172:12 pmSTL - BOS
2 stops32h 47mMultiple Airlines
Deal found 10/21$329
This Kiwi.com deal was found by Cheapflights users on 10/23. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 10/312:20 pmBOS - STL
2 stops28h 50mSpirit Airlines
Sun 11/26:21 pmSTL - BOS
1 stop28h 38mSpirit Airlines
Deal found 10/23$331

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 October 23, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$192
(Southwest)

One-way from

$68
(Kiwi.com)

Popular in

April

Cheapest in

August

Average price

$509
Provider with most accurate pricing for Boston Logan Intl-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Boston Logan Intl-Lambert-St Louis flights.
Search Deals
From New Hampshire to Lambert-St Louis
Search Deals
One-way flight from New Hampshire to Lambert-St Louis
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in October 2025
Search Deals

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 October 23, 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

Sat 12/6

12:40 pm-7:30 pm

1 stop7h 50m

Lambert-St Louis

Sat 12/13

6:05 am-3:25 pm

1 stop8h 20m

$192

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Tue 12/16

5:30 am-1:50 pm

2 stops9h 20m

Lambert-St Louis

Tue 1/6

6:50 am-12:10 pm

1 stop4h 20m

$227

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Fri 12/5

5:30 am-3:50 pm

1 stop11h 20m

Lambert-St Louis

Tue 12/9

5:10 am-2:55 pm

2 stops8h 45m

$261

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Fri 12/12

12:08 pm-5:08 pm

1 stop6h 00m

Lambert-St Louis

Tue 12/16

9:53 am-4:43 pm

1 stop5h 50m

$272

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Fri 12/12

12:30 pm-8:35 pm

2 stops9h 05m

Lambert-St Louis

Tue 12/16

9:40 am-4:35 pm

1 stop5h 55m

$287

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Tue 12/30

6:46 pm-11:43 pm

1 stop5h 57m

Lambert-St Louis

Wed 1/7

8:05 am-6:50 pm

2 stops9h 45m

$288

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Fri 12/5

6:08 am-5:10 pm

2 stops12h 02m

Lambert-St Louis

Tue 12/9

6:00 am-4:07 pm

2 stops9h 07m

$293

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Tue 2/24

4:57 pm-11:32 pm

1 stop7h 35m

Lambert-St Louis

Wed 2/25

6:14 am-2:30 pm

1 stop7h 16m

$307

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Tue 2/24

2:33 pm-12:05 am

2 stops10h 32m

Lambert-St Louis

Wed 2/25

12:15 pm-6:53 pm

1 stop5h 38m

$312

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Thu 2/26

5:30 am-10:50 am

1 stop6h 20m

Lambert-St Louis

Sun 3/1

6:45 am-11:57 am

1 stop4h 12m

$335

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/22

Showing 1-10 of 52 results
1
2
3
...
6

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 $179). Flying from New Hampshire to St. Louis in May is currently the most expensive (average of $360). 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 October 23, 2025.

One of the essential ways to save on airfare from New Hampshire to St. Louis is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 16% on airfare.

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.

  • 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.

  • How long is the flight from New Hampshire to St. Louis?

    Southwest, American Airlines, and United Airlines can get you from New Hampshire to St. Louis in just under 5h 57m. Your travel time can differ by up to 1h 53m. New Hampshire and St. Louis are separated by a distance of 1092 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • 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 ($88), American Airlines ($91), and Delta ($102).

  • 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 $179). Flying from New Hampshire to St. Louis in May is currently the most expensive (average of $360). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
St. Peters
Chesterfield
Alton
Farmington
Festus

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for New Hampshire to St. Louis

See prices for flight routes from nearby airports that may be better suited for you.
John F Kennedy Intl to Kansas City flights
John F Kennedy Intl to St. Louis flights
LaGuardia to Kansas City flights
Newark to St. Louis flights
Newark to Kansas City flights
Dulles Intl to Kansas City flights
Denver to Kansas City flights
LaGuardia to St. Louis flights
Los Angeles to Kansas City flights
Denver to St. Louis flights
Boston to Kansas City flights
O'Hare Intl to Kansas City flights
Dallas/Fort Worth to St. Louis flights
Reagan-National to Kansas City flights
Dulles Intl to St. Louis flights
Hobby to St. Louis flights
San Francisco to St. Louis flights
Baltimore to Kansas City flights
Atlanta to St. Louis flights
Seattle to St. Louis flights
Dallas/Fort Worth to Kansas City flights
Boston to St. Louis flights
Hobby to Kansas City flights
Seattle to Kansas City flights
George Bush Intcntl to St. Louis flights
Atlanta to Kansas City flights
Los Angeles to St. Louis flights
Reagan-National to St. Louis flights
Philadelphia to St. Louis flights
Minneapolis to St. Louis flights
Orlando to St. Louis flights
San Francisco to Kansas City flights
George Bush Intcntl to Kansas City flights
Baltimore to St. Louis flights
O'Hare Intl to St. Louis flights
Minneapolis to Kansas City flights
Ontario to Kansas City flights
Raleigh to Kansas City flights
Tampa to St. Louis flights
Midway to Kansas City flights
Detroit to Kansas City flights
Detroit to St. Louis flights
Philadelphia to Kansas City flights
Orlando to Kansas City flights
Sky Harbor Intl to Kansas City flights
Love Field to St. Louis flights
Austin to Kansas City flights
San Diego to Kansas City flights
Tampa to Kansas City flights
Ontario to St. Louis flights

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 October 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
SouthwestCheapest$264Average$445FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$278Average$399FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.