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

$134 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $148 and $162, 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.

How far in advance should I book a flight from St. Louis to New Hampshire?

Travelers have found it’s best to book a flight 49 days in advance to save up to 34% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 49 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from St. Louis to New Hampshire 1-2 weeks in advance for as low as $387, or $460 for flights within the next 24 hours.

What is the cheapest month to fly from St. Louis to New Hampshire?

August is one of the best times of the year to fly to New Hampshire from St. Louis. Prices for August average $419 per person but you can even find prices for as low as $207. The most expensive prices can be found in the month of July. Opting for a August flight can save you 7% on your journey compared to booking in July

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.

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.

$134+ Flights from St. Louis to New Hampshire

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Cheap flight deals from St. Louis to New Hampshire

Most accurate provider	Mytrip 3 stars
Most trusted provider	Mytrip 3 stars
Round-trip from	$267 (American Airlines)
One-way from	$134 (American Airlines)
Popular in	July
Cheapest in	August
Average price	$447

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

Search Deals

Highest demand for flights based on searches. 0% potential increase in price ($1 potential increase over avg. RT price).

Search Deals

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 April 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 April 16, 2025.

Wed 5/286:00 amSTL - MHT

1 stop5h 40mAmerican Airlines

Wed 6/47:20 amMHT - STL

1 stop6h 47mAmerican Airlines

Deal found 4/16

$267

Tue 6/241:21 pmSTL - PWM

1 stop8h 26mAmerican Airlines

Tue 7/111:59 amPWM - STL

1 stop9h 31mAmerican Airlines

Deal found 4/16

$280

Wed 5/143:40 pmSTL - PWM

1 stop6h 41mDelta

Wed 5/216:05 amPWM - STL

2 stops9h 30mDelta

Deal found 4/16

$290

Wed 6/113:42 pmSTL - BOS

1 stop5h 58mDelta

Sat 6/148:10 amBOS - STL

1 stop7h 27mDelta

Deal found 4/15

$293

Tue 5/277:10 amSTL - MHT

1 stop5h 05mSouthwest

Mon 6/95:10 amMHT - STL

1 stop4h 20mSouthwest

Deal found 4/15

$293

Fri 5/99:50 amSTL - BOS

3 stops36h 39mMultiple Airlines

Wed 5/145:42 pmBOS - STL

2 stops16h 33mMultiple Airlines

Deal found 4/15

$309

Tue 7/87:23 amSTL - BOS

1 stop8h 16mAmerican Airlines

Sat 7/128:00 amBOS - STL

Nonstop3h 08mAmerican Airlines

Deal found 4/16

$311

Wed 5/72:05 pmSTL - BOS

Nonstop2h 35mSouthwest

Sat 5/104:15 pmBOS - STL

1 stop6h 45mSouthwest

Deal found 4/15

$313

Tue 4/154:57 pmSTL - BOS

1 stop6h 50mFrontier

Mon 4/216:00 amBOS - STL

1 stop18h 46mFrontier

Deal found 4/14

$315

Mon 6/1611:28 amSTL - BOS

1 stop27h 09mSpirit Airlines

Thu 6/196:00 amBOS - STL

3 stops36h 04mSpirit Airlines

Deal found 4/16

$316

Thu 9/116:30 amSTL - PWM

1 stop5h 45mSouthwest

Mon 9/153:20 pmPWM - STL

1 stop4h 50mSouthwest

Deal found 4/16

$319

Wed 5/149:40 amSTL - BOS

2 stops8h 52mUnited Airlines

Wed 5/215:30 amBOS - STL

2 stops11h 17mUnited Airlines

Deal found 4/16

$363

Best flights from St. Louis to New Hampshire
Discover carefully curated flight deals from St. Louis to New Hampshire that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated April 16, 2025.

Wed 5/286:00 amSTL - MHT

1 stop5h 40mAmerican Airlines

Wed 6/47:20 amMHT - STL

1 stop6h 47mAmerican Airlines

Deal found 4/16

$267

Wed 5/143:40 pmSTL - PWM

1 stop6h 41mDelta

Wed 5/216:05 amPWM - STL

2 stops9h 30mDelta

Deal found 4/16

$290

Tue 5/277:10 amSTL - MHT

1 stop5h 05mSouthwest

Mon 6/95:10 amMHT - STL

1 stop4h 20mSouthwest

Deal found 4/15

$293

Fri 5/99:50 amSTL - BOS

3 stops36h 39mMultiple Airlines

Wed 5/145:42 pmBOS - STL

2 stops16h 33mMultiple Airlines

Deal found 4/15

$309

Mon 6/1611:28 amSTL - BOS

1 stop10h 25mSpirit Airlines

Thu 6/198:03 pmBOS - STL

1 stop22h 01mSpirit Airlines

Deal found 4/15

$315

Sat 4/194:57 pmSTL - BOS

1 stop6h 50mFrontier

Mon 4/216:00 amBOS - STL

1 stop18h 46mFrontier

Deal found 4/15

$350

Wed 5/149:40 amSTL - BOS

2 stops8h 52mUnited Airlines

Wed 5/215:30 amBOS - STL

2 stops11h 17mUnited Airlines

Deal found 4/16

$363

Tue 6/241:21 pmSTL - PWM

1 stop8h 26mAmerican Airlines

Tue 7/111:59 amPWM - STL

1 stop9h 31mAmerican Airlines

Deal found 4/16

$280

Wed 6/113:42 pmSTL - BOS

1 stop5h 58mDelta

Sat 6/148:10 amBOS - STL

1 stop7h 27mDelta

Deal found 4/15

$293

Wed 5/72:05 pmSTL - BOS

Nonstop2h 35mSouthwest

Sat 5/104:15 pmBOS - STL

1 stop6h 45mSouthwest

Deal found 4/15

$313

Tue 7/87:23 amSTL - BOS

1 stop8h 16mAmerican Airlines

Sat 7/128:00 amBOS - STL

Nonstop3h 08mAmerican Airlines

Deal found 4/16

$311

Thu 9/116:30 amSTL - PWM

1 stop5h 45mSouthwest

Mon 9/153:20 pmPWM - STL

1 stop4h 50mSouthwest

Deal found 4/16

$319

Last-minute flights from St. Louis to New Hampshire
Discover last-minute flight deals from St. Louis to New Hampshire. Data last updated April 16, 2025 and is based on user searches.

Fri 4/184:57 pmSTL - BOS

1 stop7h 02mFrontier

Mon 4/216:00 amBOS - STL

1 stop18h 46mFrontier

Deal found 4/15

$350

Tue 4/229:50 amSTL - BOS

2 stops7h 53mMultiple Airlines

Sun 4/277:48 pmBOS - STL

2 stops23h 53mMultiple Airlines

Deal found 4/15

$323

Thu 4/246:10 pmSTL - BOS

1 stop15h 17mSpirit Airlines

Tue 4/296:00 amBOS - STL

2 stops12h 15mSpirit Airlines

Deal found 4/15

$498

Thu 4/247:01 pmSTL - BOS

2 stops11h 27mDelta

Mon 4/285:30 pmBOS - STL

2 stops16h 58mDelta

Deal found 4/15

$529

Thu 4/248:48 amSTL - BOS

1 stop20h 10mUnited Airlines

Sun 4/279:12 pmBOS - STL

1 stop25h 38mUnited Airlines

Deal found 4/15

$633

Thu 4/247:45 amSTL - BOS

Nonstop2h 35mSouthwest

Tue 4/295:55 pmBOS - STL

Nonstop3h 05mSouthwest

Deal found 4/15

$636

Thu 4/246:30 amSTL - MHT

2 stops7h 33mUnited Airlines

Mon 4/286:45 pmMHT - STL

1 stop16h 13mUnited Airlines

Deal found 4/15

$747

Fri 4/253:08 pmSTL - BOS

2 stops23h 21mAlaska Airlines

Mon 4/287:00 amBOS - STL

1 stop32h 08mAlaska Airlines

Deal found 4/15

$778

Sat 4/266:15 amSTL - BOS

1 stop5h 22mAmerican Airlines

Tue 4/2911:41 amBOS - STL

Nonstop3h 08mAmerican Airlines

Deal found 4/16

$552

Sat 4/266:13 amSTL - PWM

1 stop4h 11mAmerican Airlines

Thu 5/17:35 amPWM - STL

1 stop6h 18mAmerican Airlines

Deal found 4/16

$667

Sat 4/266:50 amSTL - PWM

1 stop4h 04mDelta

Thu 5/11:52 pmPWM - STL

2 stops10h 42mDelta

Deal found 4/16

$683

Wed 5/72:05 pmSTL - BOS

Nonstop2h 35mSouthwest

Sat 5/104:15 pmBOS - STL

1 stop6h 45mSouthwest

Deal found 4/15

$313

One-way flights from St. Louis to New Hampshire
Search for one-way flight options from St. Louis to New Hampshire. Find affordable one-way fares based on user searches. Data last updated April 16, 2025.

Wed 5/285:00 amSTL - MHT

1 stop5h 51mAmerican Airlines

Deal found 4/16

$134

Tue 5/131:09 pmSTL - PWM

2 stops9h 12mDelta

Deal found 4/16

$148

Tue 6/171:21 pmSTL - PWM

1 stop8h 26mAmerican Airlines

Deal found 4/16

$153

Tue 4/229:50 amSTL - BOS

2 stops7h 53mMultiple Airlines

Deal found 4/15

$160

Sat 5/315:27 pmSTL - BOS

1 stop4h 45mUnited Airlines

Deal found 4/16

$162

Mon 6/307:13 pmSTL - BOS

2 stops20h 28mSpirit Airlines

Deal found 4/15

$165

Wed 5/712:25 pmSTL - BOS

1 stop8h 40mSouthwest

Deal found 4/15

$166

Sun 6/15:45 pmSTL - BOS

1 stop13h 50mFrontier

Deal found 4/16

$171

Sun 5/259:10 amSTL - BOS

Nonstop2h 44mAmerican Airlines

Deal found 4/15

$176

Fri 5/233:30 pmSTL - BOS

1 stop18h 12mSun Country Air

Deal found 4/16

$188

Fri 5/167:06 pmSTL - BOS

1 stop5h 11mDelta

Deal found 4/15

$190

Sun 5/253:00 pmSTL - MHT

2 stops6h 25mSouthwest

Deal found 4/14

$199

Cheapflights Fare Finder

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

Fly from

Fly to

Route

Depart

Return

Price

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Wed 5/28

4:01 pm-11:44 pm

1 stop6h 43m

Manchester

Wed 6/4

5:04 pm-10:28 pm

1 stop6h 24m

$267

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Tue 6/24

1:21 pm-10:47 pm

1 stop8h 26m

Portland

Tue 7/1

11:59 am-8:30 pm

1 stop9h 31m

$280

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Wed 5/14

3:40 pm-11:21 pm

1 stop6h 41m

Portland

Wed 5/21

6:05 am-2:35 pm

2 stops9h 30m

$290

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Tue 5/27

7:10 am-1:15 pm

1 stop5h 05m

Manchester

Mon 6/9

5:10 am-8:30 am

1 stop4h 20m

$293

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 6/11

3:42 pm-10:40 pm

1 stop5h 58m

Boston Logan Intl

Sat 6/14

8:10 am-2:37 pm

1 stop7h 27m

$293

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Fri 5/9

9:50 am-11:29 pm

3 stops36h 39m

Boston Logan Intl

Wed 5/14

5:42 pm-9:15 am

2 stops16h 33m

$309

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Tue 7/8

7:23 am-4:39 pm

1 stop8h 16m

Boston Logan Intl

Sat 7/12

8:00 am-10:08 am

Nonstop3h 08m

$311

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Wed 5/7

2:05 pm-5:40 pm

Nonstop2h 35m

Boston Logan Intl

Sat 5/10

4:15 pm-10:00 pm

1 stop6h 45m

$313

St. LouisBoston

STL - BOS

STLBOS

Lambert-St Louis

Mon 6/16

11:28 am-10:53 pm

1 stop10h 25m

Boston Logan Intl

Thu 6/19

8:03 pm-5:04 pm

1 stop22h 01m

$315

St. LouisPortland

STL - PWM

STLPWM

Lambert-St Louis

Thu 9/11

6:30 am-1:15 pm

1 stop5h 45m

Portland

Mon 9/15

3:20 pm-7:10 pm

1 stop4h 50m

$319

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

Showing 1-10 of 33 results

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.

Cheapflights Insights

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

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 $442). 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?

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 a feel of what it's like to fly with Alaska Airlines, Southwest 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.

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Alaska Airlines

8.0

Very good

9,876 reviews

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Southwest

8.0

Very good

4,282 reviews

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Delta

8.0

Very good

7,916 reviews

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

United Airlines

7.4

Good

8,665 reviews

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

American Airlines

7.2

Good

10,000 reviews

Alaska Airlines

8.0

Very good

9,876 reviews

Reviews

1 / 20

4.0

Okay

Anonymous,Apr 2025

LAS - STS

flight was delayed both ways even tho the weather was clear >

Related info for your journey

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?
$134 is the cheapest one-way deal found within the past few days, from American Airlines. You may also be able to find cheap deals on Delta and United Airlines, with prices starting from $148 and $162, 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 $442). 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

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Top 2 airlines flying from St. Louis to New Hampshire

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$283	Average$390	FlexibilityNo cancel fee	On-time71%
Southwest	Cheapest$306	Average$436	FlexibilityNo cancel fee	On-time63%

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$134+ 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 5/28. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to New Hampshire with Cheapflights

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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 April 16, 2025.

Most accurate provider

Most trusted provider

Round-trip from

One-way from

Popular in

Cheapest in

Average price

Find flight deals from St. Louis to New Hampshire

Cheapest flights from St. Louis to New HampshireExplore 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 April 16, 2025.

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 April 16, 2025.

Cheapflights Fare Finder

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

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.

Cheapflights Insights

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

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

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 April 16, 2025.

Reviews of airlines servicing New Hampshire

Get a feel of what it's like to fly with Alaska Airlines, Southwest 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.

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?

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

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

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

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

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

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

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.

Top 2 airlines flying from St. Louis to New Hampshire

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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 April 16, 2025.