HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
New Hampshire

$75+ Cheap flights from St. Louis (STL) to New Hampshire

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 4/2. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MHT
Mar 8 — Mar 151
Sat 3/8
Sat 3/15
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from St. Louis to New Hampshire 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 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 March 3, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$243
(American Airlines)

One-way from

$75
(Frontier)

Popular in

July

Cheapest in

August

Average price

$438
Provider with most accurate pricing for Lambert-St Louis-Boston Logan Intl flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Boston Logan Intl flights.
Search Deals
From Lambert-St Louis to New Hampshire
Search Deals
One-way flight from Lambert-St Louis to New Hampshire
Search Deals
High demand for flights, 0% potential price rise
Search Deals
Cheapest flight prices on average. 0% potential price decrease ($3 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2025
Search Deals

Find flight deals from St. Louis to New Hampshire

Cheapest flights from St. Louis to New Hampshire
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 March 3, 2025.

This American Airlines deal was found by Cheapflights users on 3/3. 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 4/210:12 amSTL - BOS
1 stop8h 43mAmerican Airlines
Thu 4/31:40 pmBOS - STL
1 stop9h 38mAmerican Airlines
Deal found 3/3$243
This Mytrip deal was found by Cheapflights users on 3/2. 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 4/109:50 amSTL - BOS
2 stops7h 53mMultiple Airlines
Mon 4/147:48 pmBOS - STL
2 stops22h 27mMultiple Airlines
Deal found 3/2$245
This Mytrip deal was found by Cheapflights users on 3/2. 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.
Sat 5/177:37 pmSTL - BOS
2 stops18h 53mSpirit Airlines
Mon 5/196:00 amBOS - STL
2 stops37h 32mSpirit Airlines
Deal found 3/2$249
This United Airlines deal was found by Cheapflights users on 3/3. 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.
Mon 3/315:35 pmSTL - BOS
1 stop6h 23mUnited Airlines
Mon 4/710:48 amBOS - STL
1 stop5h 59mUnited Airlines
Deal found 3/3$259
This Booking.com deal was found by Cheapflights users on 3/3. 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.
Sun 4/204:57 pmSTL - BOS
1 stop6h 50mFrontier
Fri 4/256:00 amBOS - STL
1 stop19h 04mFrontier
Deal found 3/3$281
This Southwest deal was found by Cheapflights users on 3/2. 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 4/17:10 amSTL - MHT
1 stop5h 40mSouthwest
Tue 4/84:50 pmMHT - STL
1 stop6h 00mSouthwest
Deal found 3/2$309
This American Airlines deal was found by Cheapflights users on 3/2. 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 5/215:12 amSTL - PWM
1 stop7h 10mAmerican Airlines
Sun 5/2511:07 amPWM - STL
1 stop4h 48mAmerican Airlines
Deal found 3/2$313
This American Airlines deal was found by Cheapflights users on 3/3. 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 4/510:48 amSTL - MHT
1 stop4h 47mAmerican Airlines
Sat 4/125:00 pmMHT - STL
1 stop5h 24mAmerican Airlines
Deal found 3/3$317
This Delta deal was found by Cheapflights users on 3/2. 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 5/216:00 amSTL - PWM
1 stop5h 57mDelta
Sun 5/256:35 amPWM - STL
2 stops11h 00mDelta
Deal found 3/2$318
This Delta deal was found by Cheapflights users on 3/2. 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.
Sun 3/306:50 amSTL - BOS
1 stop4h 04mDelta
Wed 4/25:10 pmBOS - STL
1 stop5h 30mDelta
Deal found 3/2$326
This Southwest deal was found by Cheapflights users on 3/1. 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 Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/38:50 pmSTL - BOS
Nonstop2h 30mSouthwest
Sun 4/69:55 pmBOS - STL
1 stop10h 35mSouthwest
Deal found 3/1$392
This Southwest deal was found by Cheapflights users on 3/2. 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 9/185:25 amSTL - PWM
2 stops8h 10mSouthwest
Tue 9/231:50 pmPWM - STL
2 stops7h 15mSouthwest
Deal found 3/2$397

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

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 2,558,603 searches. Data last updated March 3, 2025.

Fly from

St. Louis

Fly to

New Hampshire

Route

Depart

Return

Price

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 4/2

10:12 am-7:55 pm

1 stop8h 43m

Boston Logan Intl

Thu 4/3

1:40 pm-10:18 pm

1 stop9h 38m

$243

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 4/10

9:50 am-6:43 pm

2 stops7h 53m

Boston Logan Intl

Mon 4/14

7:48 pm-5:15 pm

2 stops22h 27m

$245

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sat 5/17

7:37 pm-3:30 pm

2 stops18h 53m

Boston Logan Intl

Mon 5/19

6:00 am-6:32 pm

2 stops37h 32m

$249

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Mon 3/31

5:35 pm-12:58 am

1 stop6h 23m

Boston Logan Intl

Mon 4/7

10:48 am-3:47 pm

1 stop5h 59m

$259

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sun 4/20

4:57 pm-12:47 am

1 stop6h 50m

Boston Logan Intl

Fri 4/25

6:00 am-12:04 am

1 stop19h 04m

$281

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Tue 4/1

7:10 am-1:50 pm

1 stop5h 40m

Manchester

Tue 4/8

4:50 pm-9:50 pm

1 stop6h 00m

$309

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 5/21

5:12 am-1:22 pm

1 stop7h 10m

Portland

Sun 5/25

11:07 am-2:55 pm

1 stop4h 48m

$313

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Sat 4/5

10:48 am-4:35 pm

1 stop4h 47m

Manchester

Sat 4/12

5:00 pm-9:24 pm

1 stop5h 24m

$317

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 5/21

6:00 am-12:57 pm

1 stop5h 57m

Portland

Sun 5/25

6:35 am-4:35 pm

2 stops11h 00m

$318

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sun 3/30

6:50 am-11:54 am

1 stop4h 04m

Boston Logan Intl

Wed 4/2

5:10 pm-9:40 pm

1 stop5h 30m

$326

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/2

Showing 1-10 of 30 results
1
2
3

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.
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 St. Louis to New Hampshire

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

What is the cheapest month to book a flight from St. Louis to New Hampshire?

Currently, January is the cheapest month in which you can book a flight from St. Louis to New Hampshire (average of $334). Flying from St. Louis to New Hampshire in June is currently the most expensive (average of $453). 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 STL to NH?

Find hourly flight availability from St. Louis to New Hampshire. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated March 3, 2025.

When flying from St. Louis to New Hampshire, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

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 March 3, 2025.
Get a feel of what it's like to fly with Southwest, Alaska Airlines and Delta from St. Louis to New Hampshire 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
4,333 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Food

7.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Southwest
8.1
Very good
4,333 reviews
Southwest
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Food

7.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Alaska Airlines
8.0
Very good
9,710 reviews
Southwest
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Food

7.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

Delta
8.0
Very good
8,068 reviews
Southwest
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Food

7.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

United Airlines
7.4
Good
8,679 reviews
Southwest
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Food

7.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,333 reviews

Boarding

8.2

Entertainment

7.6

Comfort

8.1

Food

7.1

Overall

8.1

Crew

8.7

Reviews

1 / 20

8.0
Excellent

Ila,Mar 2025

HOU - DAL

Our original flight was delayed. We were able to change our flight and got home at close to the same time. Looking forward to when you have assigned seating.

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.

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

    For a flight from St. Louis to New Hampshire, you will be flying from Lambert-St Louis. Lambert-St Louis (STL) is just 12.7 mi from the center of the city.

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

    $75 is the cheapest one-way deal found within the past few days, from Frontier. You may also be able to find cheap deals on Spirit Airlines and Delta, with prices starting from $76 and $109, respectively.

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

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

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

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to New Hampshire 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 St. Louis to New Hampshire?

    Currently, January is the cheapest month in which you can book a flight from St. Louis to New Hampshire (average of $334). Flying from St. Louis to New Hampshire in June is currently the most expensive (average of $453). 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

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 St. Louis to New Hampshire

See prices for flight routes from nearby airports that may be better suited for you.
St. Louis to Seattle flights
St. Louis to Las Vegas flights
Kansas City to Seattle flights
Kansas City to Las Vegas flights
Kansas City to John F Kennedy Intl flights
Kansas City to O'Hare Intl flights
Kansas City to Los Angeles flights
St. Louis to Miami flights
St. Louis to Orlando flights
Kansas City to Dallas/Fort Worth flights
Kansas City to LaGuardia flights
St. Louis to Sky Harbor Intl flights
St. Louis to Hobby flights
Kansas City to Sky Harbor Intl flights
St. Louis to Denver flights
St. Louis to Newark flights
Kansas City to Newark flights
St. Louis to LaGuardia flights
Kansas City to Orlando flights
St. Louis to Los Angeles flights
Kansas City to Miami flights
St. Louis to Dallas/Fort Worth flights
Kansas City to Atlanta flights
Kansas City to San Diego flights
St. Louis to Atlanta flights
Kansas City to Hobby flights
Kansas City to Boston flights
St. Louis to Boston flights
St. Louis to George Bush Intcntl flights
Kansas City to Denver flights
St. Louis to John F Kennedy Intl flights
Kansas City to Dulles Intl flights
Kansas City to San Francisco flights
St. Louis to Dulles Intl flights
St. Louis to Salt Lake City flights
Kansas City to Portland flights
Kansas City to Tampa flights
St. Louis to San Francisco flights
St. Louis to Tampa flights
Kansas City to George Bush Intcntl flights
St. Louis to Honolulu flights
Kansas City to Fort Lauderdale flights
Kansas City to Salt Lake City flights
St. Louis to San Diego flights
St. Louis to Reagan-National flights
St. Louis to O'Hare Intl flights
Kansas City to Reagan-National flights
Kansas City to Philadelphia flights
St. Louis to New Orleans flights
St. Louis to Fort Lauderdale flights

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 2,558,603 searches. Data last updated March 3, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$400FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$306Average$426FlexibilityNo cancel feeOn-time63%
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.