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Cheap flights from St. Louis to Boston from $146

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 4/28. 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
6:00 am - 11:21 am
STL
-
MHT
4h 21m
1 stop
American Airlines Logo
4:00 pm - 9:37 pm
MHT
-
STL
6h 37m
1 stop
$357American Airlines
do, feb. 26 - wo, mrt. 4
Southwest Logo
6:15 am - 11:55 am
STL
-
MHT
4h 40m
1 stop
Southwest Logo
4:20 pm - 10:15 pm
MHT
-
STL
6h 55m
1 stop
$377Southwest
wo, mrt. 18 - di, mrt. 24
Southwest Logo
6:15 am - 11:55 am
STL
-
MHT
4h 40m
1 stop
Southwest Logo
4:20 pm - 10:40 pm
MHT
-
STL
7h 20m
2 stops
$382Southwest
wo, mrt. 18 - di, mrt. 24
Southwest Logo
2:25 pm - 11:30 pm
STL
-
MHT
8h 05m
2 stops
Southwest Logo
9:10 am - 6:00 pm
MHT
-
STL
9h 50m
2 stops
$387Southwest
vr, mei. 29 - di, jun. 2
Southwest Logo
7:45 pm - 8:00 am
STL
-
MHT
11h 15m
1 stop
Southwest Logo
7:10 pm - 10:45 pm
MHT
-
STL
4h 35m
1 stop
$388Southwest
vr, apr. 24 - ma, apr. 27
Southwest Logo
9:25 am - 3:50 pm
STL
-
MHT
5h 25m
1 stop
Southwest Logo
5:55 am - 12:45 pm
MHT
-
STL
7h 50m
2 stops
$402Southwest
do, feb. 26 - wo, mrt. 4
Southwest Logo
3:25 pm - 12:05 am
STL
-
MHT
7h 40m
2 stops
Southwest Logo
12:45 pm - 6:45 pm
MHT
-
STL
7h 00m
2 stops
$407Southwest
do, feb. 26 - wo, mrt. 4
Southwest Logo
5:20 am - 12:30 pm
STL
-
MHT
6h 10m
1 stop
Southwest Logo
7:20 am - 12:30 pm
MHT
-
STL
6h 10m
1 stop
$417Southwest
do, mrt. 5 - do, mrt. 12
Southwest Logo
7:45 pm - 8:00 am
STL
-
MHT
11h 15m
1 stop
Southwest Logo
4:45 pm - 10:45 pm
MHT
-
STL
7h 00m
2 stops
$418Southwest
vr, apr. 24 - ma, apr. 27
United Airlines Logo
10:00 am - 6:56 pm
STL
-
MHT
7h 56m
2 stops
United Airlines Logo
2:30 pm - 11:57 pm
MHT
-
STL
10h 27m
2 stops
$425United Airlines
di, apr. 7 - di, apr. 14

Southwest flights from St. Louis to Manchester, New Hampshire

Our best Southwest deals on St. Louis to Manchester, New Hampshire flight tickets
Southwest
Mar 18
STL6:15 amLambert-St Louis
4h 40m
1 stop
MHT11:55 amManchester
Mar 24
MHT4:20 pmManchester
6h 55m
1 stop
STL10:15 pmLambert-St Louis
$377
Southwest
Mar 18
STL6:15 amLambert-St Louis
4h 40m
1 stop
MHT11:55 amManchester
Mar 24
MHT4:20 pmManchester
7h 20m
2 stops
STL10:40 pmLambert-St Louis
$382
Southwest
May 29
STL2:25 pmLambert-St Louis
8h 05m
2 stops
MHT11:30 pmManchester
Jun 2
MHT9:10 amManchester
9h 50m
2 stops
STL6:00 pmLambert-St Louis
$387

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
Feb 26
STL6:00 amLambert-St Louis
4h 21m
1 stop
MHT11:21 amManchester
Mar 4
MHT4:00 pmManchester
6h 37m
1 stop
STL9:37 pmLambert-St Louis
$357
American Airlines
Apr 4
STL6:00 amLambert-St Louis
4h 50m
1 stop
MHT11:50 amManchester
Apr 9
MHT12:07 pmManchester
8h 26m
1 stop
STL7:33 pmLambert-St Louis
$439
American Airlines
Jul 3
STL5:56 pmLambert-St Louis
4h 56m
1 stop
MHT11:52 pmManchester
Jul 11
MHT7:00 amManchester
7h 41m
1 stop
STL1:41 pmLambert-St Louis
$447

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 februari 6, 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

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

do 2/26

6:00 am-11:21 am

1 stop4h 21m

Manchester

wo 3/4

4:00 pm-9:37 pm

1 stop6h 37m

$357

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

wo 3/18

6:15 am-11:55 am

1 stop4h 40m

Manchester

di 3/24

4:20 pm-10:15 pm

1 stop6h 55m

$377

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

wo 3/18

6:15 am-11:55 am

1 stop4h 40m

Manchester

di 3/24

4:20 pm-10:40 pm

2 stops7h 20m

$382

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

vr 5/29

2:25 pm-11:30 pm

2 stops8h 05m

Manchester

di 6/2

9:10 am-6:00 pm

2 stops9h 50m

$387

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

vr 4/24

7:45 pm-8:00 am

1 stop11h 15m

Manchester

ma 4/27

7:10 pm-10:45 pm

1 stop4h 35m

$388

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

do 2/26

9:25 am-3:50 pm

1 stop5h 25m

Manchester

wo 3/4

5:55 am-12:45 pm

2 stops7h 50m

$402

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

do 2/26

3:25 pm-12:05 am

2 stops7h 40m

Manchester

wo 3/4

12:45 pm-6:45 pm

2 stops7h 00m

$407

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

do 3/5

5:20 am-12:30 pm

1 stop6h 10m

Manchester

do 3/12

7:20 am-12:30 pm

1 stop6h 10m

$417

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

vr 4/24

7:45 pm-8:00 am

1 stop11h 15m

Manchester

ma 4/27

4:45 pm-10:45 pm

2 stops7h 00m

$418

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

di 4/7

10:00 am-6:56 pm

2 stops7h 56m

Manchester

di 4/14

2:30 pm-11:57 pm

2 stops10h 27m

$425

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 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 12% on your flight if you consider stops on a St. Louis to Manchester, New Hampshire flight.

How have St. Louis to Manchester, New Hampshire flight prices changed over time?

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 15m

Direct flights

None
The fastest flight from St. Louis to Manchester, New Hampshire takes 4h 15m
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

  • 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 15m, 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
4,280 reviews
Search Southwest flights
American AirlinesPriceFrom $256Free CancellationRating
7.2
11,247 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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