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New Hampshire

$55+ 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 3/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — MHT
Feb 4 — Feb 111
Tue 2/4
Tue 2/11
1 adult, Economy
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Cheap flight deals from St. Louis to New Hampshire

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to New Hampshire (USNH). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated January 30, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$127
(Trip.com)

One-way from

$55
(Frontier)

Popular in

April

Cheapest in

February

Average price

$425
Provider with most accurate pricing for Lambert-St Louis-Boston Logan Intl flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-Boston Logan Intl flights.
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From Lambert-St Louis to New Hampshire
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One-way flight from Lambert-St Louis to New Hampshire
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Highest demand for flights based on searches. 6% potential increase in price ($29 potential increase over avg. RT price).
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Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in January 2025
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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 January 30, 2025.

This Priceline deal was found by Cheapflights users on 1/30. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 2/195:20 pmSTL - BOS
1 stop6h 24mMultiple Airlines
Tue 2/255:40 amBOS - STL
1 stop10h 02mMultiple Airlines
Deal found 1/30$110
This Booking.com deal was found by Cheapflights users on 1/30. 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.
Sat 3/295:24 pmSTL - BOS
1 stop6h 20mFrontier
Tue 4/16:00 amBOS - STL
1 stop18h 46mFrontier
Deal found 1/30$140
This Mytrip deal was found by Cheapflights users on 1/30. 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 2/274:00 pmSTL - BOS
1 stop16h 13mSpirit Airlines
Mon 3/34:25 pmBOS - STL
2 stops23h 17mSpirit Airlines
Deal found 1/30$180
This Delta deal was found by Cheapflights users on 1/30. 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.
Thu 2/276:06 amSTL - BOS
1 stop6h 13mDelta
Thu 3/67:00 amBOS - STL
1 stop6h 28mDelta
Deal found 1/30$217
This Booking.com deal was found by Cheapflights users on 1/29. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/35:20 pmSTL - PWM
1 stop14h 58mFrontier
Thu 3/610:08 amPWM - STL
1 stop14h 41mFrontier
Deal found 1/29$270
This United Airlines deal was found by Cheapflights users on 1/30. 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.
Thu 2/277:00 amSTL - BOS
1 stop7h 09mUnited Airlines
Mon 3/34:09 pmBOS - STL
1 stop8h 23mUnited Airlines
Deal found 1/30$297
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Thu 2/275:45 amSTL - BOS
1 stop8h 25mAmerican Airlines
Mon 3/36:30 amBOS - STL
Nonstop3h 17mAmerican Airlines
Deal found 1/30$313
This United Airlines deal was found by Cheapflights users on 1/29. 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.
Wed 2/261:00 pmSTL - PWM
2 stops9h 15mUnited Airlines
Wed 3/53:55 pmPWM - STL
1 stop8h 37mUnited Airlines
Deal found 1/29$315
This American Airlines deal was found by Cheapflights users on 1/29. 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 2/266:04 amSTL - PWM
1 stop4h 43mAmerican Airlines
Wed 3/55:15 pmPWM - STL
1 stop6h 29mAmerican Airlines
Deal found 1/29$317
This Southwest deal was found by Cheapflights users on 1/30. 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.
Thu 2/275:20 amSTL - PWM
2 stops7h 45mSouthwest
Thu 3/61:00 pmPWM - STL
1 stop9h 00mSouthwest
Deal found 1/30$322
This American Airlines deal was found by Cheapflights users on 1/30. 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.
Sat 4/56:15 amSTL - MHT
1 stop5h 15mAmerican Airlines
Sat 4/122:28 pmMHT - STL
1 stop7h 57mAmerican Airlines
Deal found 1/30$353
This Southwest deal was found by Cheapflights users on 1/30. 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.
Thu 4/38:50 pmSTL - BOS
Nonstop2h 30mSouthwest
Fri 4/111:15 pmBOS - STL
Nonstop2h 55mSouthwest
Deal found 1/30$368

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 January 30, 2025.

Fly from

Any airport

Fly to

Any airport

Route

Depart

Return

Price

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 2/19

5:20 pm-12:44 am

1 stop6h 24m

Boston Logan Intl

Tue 2/25

5:40 am-2:42 pm

1 stop10h 02m

$110

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Sat 3/29

5:24 pm-12:44 am

1 stop6h 20m

Boston Logan Intl

Tue 4/1

6:00 am-11:46 pm

1 stop18h 46m

$140

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 2/27

4:00 pm-9:13 am

1 stop16h 13m

Boston Logan Intl

Mon 3/3

4:25 pm-2:42 pm

2 stops23h 17m

$180

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 2/27

6:30 am-12:38 pm

1 stop5h 08m

Boston Logan Intl

Thu 3/6

6:00 am-12:12 pm

1 stop7h 12m

$217

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Fri 2/21

1:35 pm-8:22 pm

1 stop5h 47m

Boston Logan Intl

Mon 2/24

2:00 pm-9:02 pm

1 stop8h 02m

$247

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Mon 3/3

5:20 pm-9:18 am

1 stop14h 58m

Portland

Thu 3/6

10:08 am-11:49 pm

1 stop14h 41m

$270

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Thu 2/27

5:45 am-3:10 pm

1 stop8h 25m

Boston Logan Intl

Thu 3/6

6:30 am-8:47 am

Nonstop3h 17m

$313

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 2/26

1:00 pm-11:15 pm

2 stops9h 15m

Portland

Wed 3/5

3:55 pm-11:32 pm

1 stop8h 37m

$315

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 2/26

6:04 am-11:47 am

1 stop4h 43m

Portland

Wed 3/5

5:15 pm-10:44 pm

1 stop6h 29m

$317

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Thu 2/27

5:20 am-2:05 pm

2 stops7h 45m

Portland

Thu 3/6

1:00 pm-9:00 pm

1 stop9h 00m

$322

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/30

Showing 1-10 of 29 results
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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 January 30, 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 January 30, 2025.
Get a feel of what it's like to fly with Southwest, Delta and United Airlines 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
4,585 reviews

Crew

8.7

Food

7.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Southwest
8.1
Very good
4,585 reviews
Southwest
8.1
Very good
4,585 reviews

Crew

8.7

Food

7.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Delta
8.0
Very good
8,454 reviews
Southwest
8.1
Very good
4,585 reviews

Crew

8.7

Food

7.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

United Airlines
7.4
Good
8,913 reviews
Southwest
8.1
Very good
4,585 reviews

Crew

8.7

Food

7.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

American Airlines
7.2
Good
10,000 reviews
Southwest
8.1
Very good
4,585 reviews

Crew

8.7

Food

7.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

Spirit Airlines
6.3
Okay
8,083 reviews
Southwest
8.1
Very good
4,585 reviews

Crew

8.7

Food

7.1

Entertainment

7.7

Boarding

8.2

Comfort

8.1

Overall

8.1

Reviews

1 / 20

6.0
Good

Lauren,Dec 2024

MCI - DCA

We BARELY made the connection and when we got onboard we were treated like disobedient children who should have arrived earlier because we had to ask other passengers to move so we could sit with our kids. The flight attendants on the first flight were nice but the second one, they were snippy and fairly rude.

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?

    $55 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 $78 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

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Alternative routes for St. Louis to New Hampshire

See prices for flight routes from nearby airports that may be better suited for you.
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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 January 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$286Average$403FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$306Average$416FlexibilityNo cancel feeOn-time63%
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