Cheap flights from New Hampshire to St. Louis from $77

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from New Hampshire to St. Louis departing on 5/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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Find the cheapest flights from New Hampshire to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:41 pm - 11:46 pm
MHT
-
STL
7h 05m
1 stop
American Airlines Logo
4:30 pm - 10:51 pm
STL
-
MHT
5h 21m
1 stop
$257American Airlines
Wed, Apr 15 - Tue, Apr 28
American Airlines Logo
5:07 pm - 10:07 pm
MHT
-
STL
6h 00m
1 stop
American Airlines Logo
5:51 am - 11:42 am
STL
-
MHT
4h 51m
1 stop
$272American Airlines
Mon, Apr 27 - Wed, Apr 29
American Airlines Logo
6:46 am - 11:45 am
MHT
-
STL
5h 59m
1 stop
American Airlines Logo
2:33 pm - 10:51 pm
STL
-
MHT
7h 18m
1 stop
$287American Airlines
Wed, Apr 15 - Tue, Apr 28
United Airlines Logo
7:07 pm - 11:51 pm
PWM
-
STL
5h 44m
1 stop
United Airlines Logo
6:25 am - 3:14 pm
STL
-
PWM
7h 49m
1 stop
$317United Airlines
Wed, Mar 18 - Thu, Mar 26
Delta Logo
6:03 am - 12:58 pm
PWM
-
STL
7h 55m
2 stops
Delta Logo
9:41 am - 5:08 pm
STL
-
PWM
6h 27m
1 stop
$322Delta
Wed, Mar 18 - Thu, Mar 26
Delta Logo
2:05 pm - 9:29 pm
PWM
-
STL
8h 24m
1 stop
Delta Logo
6:45 am - 12:00 pm
STL
-
PWM
4h 15m
1 stop
$335Delta
Tue, May 12 - Fri, May 15
Southwest Logo
3:45 pm - 10:10 pm
MHT
-
STL
7h 25m
2 stops
Southwest Logo
1:45 pm - 9:55 pm
STL
-
MHT
7h 10m
1 stop
$335Southwest
Tue, Apr 21 - Thu, Apr 23
Southwest Logo
2:45 pm - 8:00 pm
MHT
-
STL
6h 15m
2 stops
Southwest Logo
4:00 pm - 9:10 pm
STL
-
MHT
4h 10m
1 stop
$340Southwest
Tue, Mar 24 - Tue, Mar 31
Multiple Airlines Logo
4:23 pm - 11:58 pm
BOS
-
STL
8h 35m
1 stop
Multiple Airlines Logo
11:33 am - 11:45 am
STL
-
BOS
23h 12m
1 stop
$351Multiple Airlines
Fri, Apr 10 - Sun, Apr 12
Multiple Airlines Logo
12:35 pm - 1:34 pm
BOS
-
STL
25h 59m
1 stop
Multiple Airlines Logo
4:51 pm - 9:33 pm
STL
-
BOS
27h 42m
1 stop
$353Multiple Airlines
Sun, Mar 15 - Tue, Mar 17

American Airlines flights from New Hampshire to St. Louis

Our best American Airlines deals on New Hampshire to St. Louis flight tickets
American Airlines
Apr 15
MHT5:41 pmManchester
7h 05m
1 stop
STL11:46 pmLambert-St Louis
Apr 28
STL4:30 pmLambert-St Louis
5h 21m
1 stop
MHT10:51 pmManchester
$257
American Airlines
Apr 27
MHT5:07 pmManchester
6h 00m
1 stop
STL10:07 pmLambert-St Louis
Apr 29
STL5:51 amLambert-St Louis
4h 51m
1 stop
MHT11:42 amManchester
$272
American Airlines
Apr 15
MHT6:46 amManchester
5h 59m
1 stop
STL11:45 amLambert-St Louis
Apr 28
STL2:33 pmLambert-St Louis
7h 18m
1 stop
MHT10:51 pmManchester
$287

United Airlines flights from New Hampshire to St. Louis

Our best United Airlines deals on New Hampshire to St. Louis flight tickets
United Airlines
Mar 18
PWM7:07 pmPortland
5h 44m
1 stop
STL11:51 pmLambert-St Louis
Mar 26
STL6:25 amLambert-St Louis
7h 49m
1 stop
PWM3:14 pmPortland
$317
United Airlines
May 27
MHT2:37 pmManchester
9h 58m
2 stops
STL11:35 pmLambert-St Louis
Jun 9
STL9:23 amLambert-St Louis
8h 39m
2 stops
MHT7:02 pmManchester
$357
United Airlines
Mar 26
BOS7:16 amBoston Logan Intl
16h 43m
1 stop
STL10:59 pmLambert-St Louis
Mar 30
STL9:10 amLambert-St Louis
14h 49m
1 stop
BOS12:59 amBoston Logan Intl
$363

momondo 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, momondo users made 832,500 searches. Data last updated February 25, 2026.
Use the filters below to find and compare flights from New Hampshire to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Wed 4/15

5:41 pm-11:46 pm

1 stop7h 05m

Lambert-St Louis

Tue 4/28

4:30 pm-10:51 pm

1 stop5h 21m

$257

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Mon 4/27

5:07 pm-10:07 pm

1 stop6h 00m

Lambert-St Louis

Wed 4/29

5:51 am-11:42 am

1 stop4h 51m

$272

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Wed 4/15

6:46 am-11:45 am

1 stop5h 59m

Lambert-St Louis

Tue 4/28

2:33 pm-10:51 pm

1 stop7h 18m

$287

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Wed 3/18

7:07 pm-11:51 pm

1 stop5h 44m

Lambert-St Louis

Thu 3/26

6:25 am-3:14 pm

1 stop7h 49m

$317

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Wed 3/18

6:03 am-12:58 pm

2 stops7h 55m

Lambert-St Louis

Thu 3/26

9:41 am-5:08 pm

1 stop6h 27m

$322

PortlandSt. Louis

PWM - STL

PWMSTL

Portland

Tue 5/12

2:05 pm-9:29 pm

1 stop8h 24m

Lambert-St Louis

Fri 5/15

6:45 am-12:00 pm

1 stop4h 15m

$335

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Tue 4/21

3:45 pm-10:10 pm

2 stops7h 25m

Lambert-St Louis

Thu 4/23

1:45 pm-9:55 pm

1 stop7h 10m

$335

ManchesterSt. Louis

MHT - STL

MHTSTL

Manchester

Tue 3/24

2:45 pm-8:00 pm

2 stops6h 15m

Lambert-St Louis

Tue 3/31

4:00 pm-9:10 pm

1 stop4h 10m

$340

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Fri 4/10

4:23 pm-11:58 pm

1 stop8h 35m

Lambert-St Louis

Sun 4/12

11:33 am-11:45 am

1 stop23h 12m

$351

BostonSt. Louis

BOS - STL

BOSSTL

Boston Logan Intl

Sun 3/15

12:35 pm-1:34 pm

1 stop25h 59m

Lambert-St Louis

Tue 3/17

4:51 pm-9:33 pm

1 stop27h 42m

$353

Flights are sorted by cheapest round-trip flights first.

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See travel insights to St. Louis from

How to get the cheapest flight ticket from New Hampshire to St. Louis

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to St. Louis?

In general, August is the cheapest month to fly from New Hampshire to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $382. The month of September is another great option to travel to St. Louis, with average flight prices from New Hampshire averaging around $401.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $421. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $486. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from New Hampshire in the evening is the least expensive time of day to depart. momondo users have found prices as low as $424 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $468 per ticket.

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

You are more likely to see cheaper flights to St. Louis from New Hampshire when booking weeks ahead of your departure date. In general, you can expect to find flights to St. Louis for around $455 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to St. Louis from New Hampshire for as low as $385 on momondo.

Can stopping save me money on New Hampshire to St. Louis flights?

You could potentially save up to 49% on your flight if you consider stops on a New Hampshire to St. Louis flight.

Cheap New Hampshire to St. Louis flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from New Hampshire to St. Louis

Fastest flight time

2h 55m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from New Hampshire to St. Louis takes 2h 55m
Direct flights go from New Hampshire to St. Louis every day.
There is 1 airport in St. Louis. From New Hampshire there are direct flights to Lambert-St Louis (STL).
  • When did momondo last update prices for flights from New Hampshire to Lambert-St Louis Airport?

    Prices for flights from New Hampshire to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from New Hampshire to Lambert-St Louis Airport?

  • How old do you have to be to fly from New Hampshire to Lambert-St Louis Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from New Hampshire to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Best airlines flying from New Hampshire to St. Louis

Compare and see reviews for airlines that fly from New Hampshire to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $200Free CancellationRating
8.0
4,300 reviews
Search Southwest flights
American AirlinesPriceFrom $274Free CancellationRating
7.1
11,345 reviews
Search American Airlines flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Florissant
Maryland Heights
O'Fallon
St. Peters
Wentzville
Collinsville
Fenton
Alton
Farmington
Clayton
Edwardsville
Festus
Eureka
Litchfield
Glencoe
Grafton

Why use momondo?

Why should I use momondo to find a flight deal from New Hampshire to St. Louis?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from New Hampshire to St. Louis. momondo saves you time and could save you money on your trip.

Can I find flights from New Hampshire to St. Louis with flexible booking policies on momondo?

Yes. momondo enables you to select and highlight flights to St. Louis from New Hampshire with this policy.

How can momondo help me find flights from New Hampshire to St. Louis?

momondo helps you find the best flight between New Hampshire and St. Louis by providing filters to narrow your choice of flights to those matching your criteria. You can select flights based on numerous factors such as price, departure and landing times, airport and airline.

I’m not ready to book a flight from New Hampshire to St. Louis right now. Can momondo alert me if prices change?

Yes. momondo can track prices for New Hampshire to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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1 adult
Fri 3/27
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