What is the cheapest airline that flies from Lambert-St Louis to New Hampshire?

Southwest, American Airlines, and United Airlines are the most popular carriers operating from Lambert-St Louis to New Hampshire

When did momondo last update prices for flights from Lambert-St Louis Airport to New Hampshire?

Prices for flights from Lambert-St Louis Airport to New Hampshire refresh daily.

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

There are 2 operators available for flights from Lambert-St Louis Airport to New Hampshire as of November 2026.

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

Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to New Hampshire.

What documentation or ID do you need to fly to New Hampshire?

The travel and health documents you'll need for your trip to New Hampshire may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at New Hampshire. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

$187 Cheap Flights from St. Louis to New Hampshire in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to New Hampshire

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

8:45 pm - 8:35 amSTL Lambert-St Louis-MHT Manchester

10h 50m1 stop Baltimore/Washington

3:25 pm - 7:40 pmMHT Manchester-STL Lambert-St Louis

5h 15m1 stop Baltimore/Washington

$386Southwest

Wed, Dec 30 - Wed, Jan 6

8:45 pm - 8:35 amSTL Lambert-St Louis-MHT Manchester

10h 50m1 stop Baltimore/Washington

5:30 am - 1:50 pmMHT Manchester-STL Lambert-St Louis

9h 20m2 stops Baltimore/Washington Nashville Intl

$392Southwest

Wed, Dec 30 - Wed, Jan 6

2:20 pm - 7:45 pmSTL Lambert-St Louis-MHT Manchester

4h 25m1 stop Baltimore/Washington

12:30 pm - 4:55 pmMHT Manchester-STL Lambert-St Louis

5h 25m1 stop Baltimore/Washington

$393Southwest

Mon, Feb 1 - Mon, Feb 8

6:05 am - 11:30 amSTL Lambert-St Louis-MHT Manchester

4h 25m1 stop Chicago Midway

5:00 am - 11:20 amMHT Manchester-STL Lambert-St Louis

7h 20m2 stops Baltimore/Washington Chicago Midway

$398Southwest

Mon, Feb 1 - Mon, Feb 8

3:47 pm - 11:54 pmSTL Lambert-St Louis-MHT Manchester

7h 07m1 stop Washington, D.C. Reagan-National

5:00 am - 10:12 amMHT Manchester-STL Lambert-St Louis

6h 12m1 stop Washington, D.C. Reagan-National

$403American Airlines

Fri, Jan 15 - Mon, Jan 18

10:20 am - 7:45 pmSTL Lambert-St Louis-MHT Manchester

8h 25m2 stops Atlanta Hartsfield-Jackson Baltimore/Washington

2:40 pm - 10:50 pmMHT Manchester-STL Lambert-St Louis

9h 10m2 stops Baltimore/Washington Chicago Midway

$403Southwest

Mon, Feb 1 - Mon, Feb 8

8:30 am - 2:03 pmSTL Lambert-St Louis-MHT Manchester

4h 33m1 stop Washington, D.C. Dulles Intl

2:38 pm - 7:30 pmMHT Manchester-STL Lambert-St Louis

5h 52m1 stop Washington, D.C. Dulles Intl

$449United Airlines

Wed, Dec 2 - Sat, Dec 5

8:30 am - 2:03 pmSTL Lambert-St Louis-MHT Manchester

4h 33m1 stop Washington, D.C. Dulles Intl

2:38 pm - 10:15 pmMHT Manchester-STL Lambert-St Louis

8h 37m2 stops Washington, D.C. Dulles Intl Newark

$454United Airlines

Wed, Dec 2 - Sat, Dec 5

8:30 am - 2:03 pmSTL Lambert-St Louis-MHT Manchester

4h 33m1 stop Washington, D.C. Dulles Intl

2:38 pm - 10:22 pmMHT Manchester-STL Lambert-St Louis

8h 44m2 stops Washington, D.C. Dulles Intl Newark

$478United Airlines

Tue, Dec 15 - Wed, Dec 16

6:30 am - 2:03 pmSTL Lambert-St Louis-MHT Manchester

30h 33m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl

2:38 pm - 10:15 pmMHT Manchester-STL Lambert-St Louis

8h 37m2 stops Washington, D.C. Dulles Intl Newark

$529United Airlines

Wed, Dec 2 - Sat, Dec 5

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United Airlines flights from St. Louis to New Hampshire

Our best United Airlines deals on St. Louis to New Hampshire flight tickets

United Airlines

Dec 2

STL8:30 amLambert-St Louis

4h 33m

1 stop

MHT2:03 pmManchester

Dec 5

MHT2:38 pmManchester

5h 52m

1 stop

STL7:30 pmLambert-St Louis

$449

United Airlines

Dec 2

STL8:30 amLambert-St Louis

4h 33m

1 stop

MHT2:03 pmManchester

Dec 5

MHT2:38 pmManchester

8h 37m

2 stops

STL10:15 pmLambert-St Louis

$454

United Airlines

Dec 15

STL8:30 amLambert-St Louis

4h 33m

1 stop

MHT2:03 pmManchester

Dec 16

MHT2:38 pmManchester

8h 44m

2 stops

STL10:22 pmLambert-St Louis

$478

Southwest flights from St. Louis to New Hampshire

Our best Southwest deals on St. Louis to New Hampshire flight tickets

Southwest

Dec 30

STL8:45 pmLambert-St Louis

10h 50m

1 stop

MHT8:35 amManchester

Jan 6

MHT3:25 pmManchester

5h 15m

1 stop

STL7:40 pmLambert-St Louis

$386

Southwest

Dec 30

STL8:45 pmLambert-St Louis

10h 50m

1 stop

MHT8:35 amManchester

Jan 6

MHT5:30 amManchester

9h 20m

2 stops

STL1:50 pmLambert-St Louis

$392

Southwest

Feb 1

STL2:20 pmLambert-St Louis

4h 25m

1 stop

MHT7:45 pmManchester

Feb 8

MHT12:30 pmManchester

5h 25m

1 stop

STL4:55 pmLambert-St Louis

$393

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Wed 12/30

8:45 pm-8:35 am

1 stop10h 50m

Manchester

Wed 1/6

3:25 pm-7:40 pm

1 stop5h 15m

$386

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Wed 12/30

8:45 pm-8:35 am

1 stop10h 50m

Manchester

Wed 1/6

5:30 am-1:50 pm

2 stops9h 20m

$392

Quickest round-trip

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Mon 2/1

2:20 pm-7:45 pm

1 stop4h 25m

Manchester

Mon 2/8

12:30 pm-4:55 pm

1 stop5h 25m

$393

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Mon 2/1

6:05 am-11:30 am

1 stop4h 25m

Manchester

Mon 2/8

5:00 am-11:20 am

2 stops7h 20m

$398

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Fri 1/15

3:47 pm-11:54 pm

1 stop7h 07m

Manchester

Mon 1/18

5:00 am-10:12 am

1 stop6h 12m

$403

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Mon 2/1

10:20 am-7:45 pm

2 stops8h 25m

Manchester

Mon 2/8

2:40 pm-10:50 pm

2 stops9h 10m

$403

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Wed 12/2

8:30 am-2:03 pm

1 stop4h 33m

Manchester

Sat 12/5

2:38 pm-7:30 pm

1 stop5h 52m

$449

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Wed 12/2

8:30 am-2:03 pm

1 stop4h 33m

Manchester

Sat 12/5

2:38 pm-10:15 pm

2 stops8h 37m

$454

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Tue 12/15

8:30 am-2:03 pm

1 stop4h 33m

Manchester

Wed 12/16

2:38 pm-10:22 pm

2 stops8h 44m

$478

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Wed 12/2

6:30 am-2:03 pm

2 stops30h 33m

Manchester

Sat 12/5

2:38 pm-10:15 pm

2 stops8h 37m

$529

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

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

Prices

Airlines

What is the cheapest month to fly to New Hampshire?

The month of August is another great option to travel to New Hampshire, with average flight prices from St. Louis averaging around $378.

What is the cheapest day to depart on your flight to New Hampshire?

The cheapest day to depart on your flight to New Hampshire is on a Thursday when prices can be found for as low as $553. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to New Hampshire is Monday, with ticket prices averaging around $639.

What is the cheapest time of day to depart on your flight to New Hampshire?

According to our data, the cheapest time of day to fly to New Hampshire is in the evening. momondo users have found flights departing from St. Louis to New Hampshire in the evening for as low as $523. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Try not to purchase tickets at noon because they tend to be around $820. Of course, these prices can vary depending on the time of year and what airport you fly to.

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

You are more likely to see cheaper flights to New Hampshire from St. Louis when booking weeks ahead of your departure date. In general, you can expect to find flights to New Hampshire for around $494 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to New Hampshire from St. Louis for as low as $420 on momondo.

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

You could potentially save up to 15% on your flight if you consider stops on a St. Louis to New Hampshire flight.

Cheap St. Louis to New Hampshire flight deals and tips

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

Best Price Found	$187
Fastest flight time	2h 30m
Direct flights	None

The best one-way flight to New Hampshire from St. Louis in the past 72 hours is $187. The best round-trip flight deal from St. Louis to New Hampshire found on momondo in the last 72 hours is $386.

The fastest flight from St. Louis to New Hampshire takes 2h 30m

There are no direct flights from St. Louis to New Hampshire. There are no popular flight routes from St. Louis to New Hampshire.

Search flight deals

Frequently asked questions about flying from St. Louis to New Hampshire

When did momondo last update prices for flights from Lambert-St Louis Airport to New Hampshire?
Prices for flights from Lambert-St Louis Airport to New Hampshire refresh daily.
How many operators does momondo search for flights from Lambert-St Louis Airport to New Hampshire?
There are 2 operators available for flights from Lambert-St Louis Airport to New Hampshire as of November 2026.
How old do you have to be to fly from Lambert-St Louis Airport to New Hampshire?
Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Lambert-St Louis Airport to New Hampshire.
What documentation or ID do you need to fly to New Hampshire?
The travel and health documents you'll need for your trip to New Hampshire may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at New Hampshire. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

Best airlines flying from St. Louis to New Hampshire

Compare and see reviews for airlines that fly from St. Louis to New Hampshire with momondo

Airline	Rating	Free Cancellation	Price
Southwest	PriceFrom $310	Free Cancellation	Rating 8.0 4,219 reviews		Search Southwest flights
American Airlines	PriceFrom $377	Free Cancellation	Rating 7.0 12,227 reviews		Search American Airlines flights

Why use momondo?

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

momondo compares prices from hundreds of airlines and agents so you can find and book the best deal on flights from St. Louis to New Hampshire. Millions of users trust and use momondo every year so you are in good hands.

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

momondo does allow users to show only those flights to New Hampshire from St. Louis which offer a flexible booking policy as well as other useful filters and features.

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

Once you have performed a search for St. Louis to New Hampshire flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

Yes. momondo can track prices for St. Louis to New Hampshire 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.