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Cheap flights from St. Louis to Boston from $164

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Boston departing on 6/23. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from St. Louis to Boston

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
5:08 am - 11:33 am
STL
-
MHT
5h 25m
1 stop
American Airlines Logo
6:07 pm - 12:16 am
MHT
-
STL
7h 09m
1 stop
$327American Airlines
Wed, Jun 10 - Tue, Jun 16
American Airlines Logo
6:28 pm - 11:35 pm
STL
-
MHT
4h 07m
1 stop
American Airlines Logo
7:30 pm - 11:41 pm
MHT
-
STL
5h 11m
1 stop
$366American Airlines
Wed, Oct 7 - Tue, Oct 13
American Airlines Logo
5:23 am - 11:31 am
STL
-
MHT
5h 08m
1 stop
American Airlines Logo
10:29 am - 5:03 pm
MHT
-
STL
7h 34m
1 stop
$367American Airlines
Thu, Aug 20 - Thu, Aug 27
American Airlines Logo
9:47 am - 6:09 pm
STL
-
MHT
7h 22m
1 stop
American Airlines Logo
7:30 pm - 11:41 pm
MHT
-
STL
5h 11m
1 stop
$368American Airlines
Wed, Oct 7 - Tue, Oct 13
American Airlines Logo
6:28 pm - 11:35 pm
STL
-
MHT
4h 07m
1 stop
American Airlines Logo
7:30 pm - 11:41 pm
MHT
-
STL
5h 11m
1 stop
$371American Airlines
Wed, Oct 7 - Tue, Oct 13
American Airlines Logo
5:03 pm - 12:22 am
STL
-
MHT
6h 19m
1 stop
American Airlines Logo
6:07 pm - 12:16 am
MHT
-
STL
7h 09m
1 stop
$377American Airlines
Wed, Jun 24 - Sun, Jun 28
American Airlines Logo
5:23 am - 11:31 am
STL
-
MHT
5h 08m
1 stop
American Airlines Logo
6:00 am - 10:42 am
MHT
-
STL
5h 42m
1 stop
$378American Airlines
Thu, Aug 20 - Thu, Aug 27
American Airlines Logo
5:03 pm - 12:22 am
STL
-
MHT
6h 19m
1 stop
American Airlines Logo
5:10 pm - 11:57 pm
MHT
-
STL
7h 47m
1 stop
$397American Airlines
Sun, Jun 28 - Fri, Jul 3
Southwest Logo
4:35 pm - 12:05 am
STL
-
MHT
6h 30m
2 stops
Southwest Logo
6:15 pm - 10:25 pm
MHT
-
STL
5h 10m
1 stop
$402Southwest
Mon, Jun 22 - Tue, Jul 7
Southwest Logo
4:35 pm - 12:05 am
STL
-
MHT
6h 30m
2 stops
Southwest Logo
11:25 am - 6:25 pm
MHT
-
STL
8h 00m
2 stops
$407Southwest
Mon, Jun 22 - Tue, Jul 7

United Airlines flights from St. Louis to Manchester, New Hampshire

Our best United Airlines deals on St. Louis to Manchester, New Hampshire flight tickets
United Airlines
Sep 1
STL8:00 amLambert-St Louis
10h 00m
2 stops
MHT7:00 pmManchester
Sep 2
MHT2:46 pmManchester
8h 14m
2 stops
STL10:00 pmLambert-St Louis
$517
United Airlines
Oct 7
STL6:40 amLambert-St Louis
11h 23m
2 stops
MHT7:03 pmManchester
Oct 13
MHT7:38 pmManchester
19h 40m
2 stops
STL2:18 pmLambert-St Louis
$577
United Airlines
Sep 1
STL8:40 amLambert-St Louis
9h 20m
1 stop
MHT7:00 pmManchester
Sep 2
MHT2:46 pmManchester
8h 14m
2 stops
STL10:00 pmLambert-St Louis
$615

American Airlines flights from St. Louis to Manchester, New Hampshire

Our best American Airlines deals on St. Louis to Manchester, New Hampshire flight tickets
American Airlines
Jun 10
STL5:08 amLambert-St Louis
5h 25m
1 stop
MHT11:33 amManchester
Jun 16
MHT6:07 pmManchester
7h 09m
1 stop
STL12:16 amLambert-St Louis
$327
American Airlines
Oct 7
STL6:28 pmLambert-St Louis
4h 07m
1 stop
MHT11:35 pmManchester
Oct 13
MHT7:30 pmManchester
5h 11m
1 stop
STL11:41 pmLambert-St Louis
$366
American Airlines
Aug 20
STL5:23 amLambert-St Louis
5h 08m
1 stop
MHT11:31 amManchester
Aug 27
MHT10:29 amManchester
7h 34m
1 stop
STL5:03 pmLambert-St Louis
$367

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Manchester, 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, momondo users made 832,500 searches. Data last updated May 16, 2026.
Use the filters below to find and compare flights from St. Louis to Manchester, New Hampshire that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Wed 6/10

5:08 am-11:33 am

1 stop5h 25m

Manchester

Tue 6/16

6:07 pm-12:16 am

1 stop7h 09m

$327
Quickest round-trip

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Wed 10/7

6:28 pm-11:35 pm

1 stop4h 07m

Manchester

Tue 10/13

7:30 pm-11:41 pm

1 stop5h 11m

$366

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Thu 8/20

5:23 am-11:31 am

1 stop5h 08m

Manchester

Thu 8/27

10:29 am-5:03 pm

1 stop7h 34m

$367

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Wed 10/7

9:47 am-6:09 pm

1 stop7h 22m

Manchester

Tue 10/13

7:30 pm-11:41 pm

1 stop5h 11m

$368

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Wed 10/7

6:28 pm-11:35 pm

1 stop4h 07m

Manchester

Tue 10/13

7:30 pm-11:41 pm

1 stop5h 11m

$371

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Wed 6/24

5:03 pm-12:22 am

1 stop6h 19m

Manchester

Sun 6/28

6:07 pm-12:16 am

1 stop7h 09m

$377

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Thu 8/20

5:23 am-11:31 am

1 stop5h 08m

Manchester

Thu 8/27

6:00 am-10:42 am

1 stop5h 42m

$378

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Sun 6/28

5:03 pm-12:22 am

1 stop6h 19m

Manchester

Fri 7/3

5:10 pm-11:57 pm

1 stop7h 47m

$397

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Mon 6/22

4:35 pm-12:05 am

2 stops6h 30m

Manchester

Tue 7/7

6:15 pm-10:25 pm

1 stop5h 10m

$402

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Mon 6/22

4:35 pm-12:05 am

2 stops6h 30m

Manchester

Tue 7/7

11:25 am-6:25 pm

2 stops8h 00m

$407

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Boston from

How to get the cheapest flight ticket from St. Louis to Manchester, 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

What is the typical price of a round-trip flight between St. Louis and Manchester, New Hampshire?

What is the cheapest month to fly to Manchester, New Hampshire?

If you aren’t able to travel during the month of May, then book flights to Manchester, New Hampshire from St. Louis during August instead. Flights to Manchester, New Hampshire in August, while not as cheap as those in May, still average around $276.

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

You could potentially save up to 40% on your flight if you consider stops on a St. Louis to Manchester, New Hampshire flight.

When to book flights from St. Louis to Manchester, New Hampshire

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Manchester, New Hampshire according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Manchester, New Hampshire (STL to MHT) flight deals and tips

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

Fastest flight time

4h 10m

Direct flights

None
The fastest flight from St. Louis to Manchester, New Hampshire takes 4h 10m
There are no direct flights from St. Louis to Manchester, New Hampshire. There are no popular flight routes from St. Louis to Manchester, New Hampshire.
Search flight deals

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

  • How far is Lambert-St Louis to Manchester by plane?

    The straight-line distance from Lambert-St Louis to Manchester is 1022.3 mi. Flights usually cover this in 4h 10m, depending on flying conditions and air traffic around both airports.

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

    Prices for flights from Lambert-St Louis Airport to Manchester Airport are updated daily.

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

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

    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 Manchester Airport.

  • What documentation or ID do you need to fly to Manchester Airport?

    The travel and health documents you'll need for your trip to Manchester Airport 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 Manchester Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Manchester, New Hampshire?

Best airlines flying from St. Louis to Manchester, New Hampshire

Compare and see reviews for airlines that fly from St. Louis to Manchester, New Hampshire with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $200Free CancellationRating
8.0
4,294 reviews
Search Southwest flights
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,662 reviews
Search American Airlines flights

Traveling to a place near Boston?

Book flights to Boston if you plan to visit one of these locations
Keene

Why use momondo?

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

It is quick and easy to find St. Louis to Manchester flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Manchester that suits you.

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

Yes. All flights to Manchester from St. Louis on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search in the form on the page, momondo provides useful filters and insights. We can show you the cheapest days and times to fly as well as help filter your options to help you make an informed choice when booking flights to Manchester from St. Louis.

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

Price alerts on flights to Manchester from St. Louis are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

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