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Cheap flights from St. Louis to Boston from $90

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 10/21. 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 St. Louis to Boston

Cheap round-trip flights

Southwest Logo
2:15 pm - 10:15 pmSTL-MHT
7h 00m1 stop
Southwest Logo
9:15 am - 12:45 pmMHT-STL
4h 30m1 stop
$204Southwest
Find Deal
Tue, Sep 2 - Tue, Sep 9
Southwest Logo
12:30 pm - 10:25 pmSTL-MHT
8h 55m1 stop
Southwest Logo
9:05 am - 2:45 pmMHT-STL
6h 40m1 stop
$210Southwest
Find Deal
Sat, Sep 13 - Sat, Sep 20
Southwest Logo
7:10 am - 2:50 pmSTL-MHT
6h 40m1 stop
Southwest Logo
7:10 am - 1:10 pmMHT-STL
7h 00m2 stops
$240Southwest
Find Deal
Tue, Sep 2 - Tue, Sep 9
American Airlines Logo
6:00 pm - 12:09 amSTL-MHT
5h 09m1 stop
American Airlines Logo
6:00 am - 12:16 pmMHT-STL
7h 16m1 stop
$243American Airlines
Find Deal
Thu, Sep 4 - Sun, Sep 7
American Airlines Logo
6:10 am - 5:28 pmSTL-MHT
10h 18m2 stops
American Airlines Logo
5:59 pm - 9:53 pmMHT-STL
4h 54m1 stop
$258American Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 20
United Airlines Logo
6:35 am - 2:57 pmSTL-MHT
7h 22m2 stops
United Airlines Logo
1:30 pm - 9:32 pmMHT-STL
9h 02m2 stops
$305United Airlines
Find Deal
Sat, Sep 13 - Sat, Sep 20
American Airlines Logo
6:00 am - 11:54 amSTL-MHT
4h 54m1 stop
American Airlines Logo
12:25 pm - 6:11 pmMHT-STL
6h 46m1 stop
$407American Airlines
Find Deal
Thu, Oct 30 - Sat, Nov 1
United Airlines Logo
11:49 am - 11:44 pmSTL-MHT
10h 55m2 stops
United Airlines Logo
2:27 pm - 10:45 pmMHT-STL
9h 18m2 stops
$417United Airlines
Find Deal
Thu, Oct 30 - Fri, Oct 31
American Airlines Logo
10:10 am - 4:57 pmSTL-MHT
5h 47m1 stop
American Airlines Logo
3:56 pm - 8:47 pmMHT-STL
5h 51m1 stop
$447American Airlines
Find Deal
Tue, Aug 19 - Sat, Aug 23
United Airlines Logo
6:15 am - 3:02 pmSTL-MHT
31h 47m3 stops
United Airlines Logo
1:30 pm - 11:44 pmMHT-STL
11h 14m2 stops
$451United Airlines
Find Deal
Wed, Sep 3 - Sat, Sep 6

Southwest flights from St. Louis to Manchester, New Hampshire

Our best Southwest deals on St. Louis to Manchester, New Hampshire flight tickets
Southwest
Sep 2
STL2:15 pmLambert-St Louis
7h 00m
1 stop
MHT10:15 pmManchester
Sep 9
MHT9:15 amManchester
4h 30m
1 stop
STL12:45 pmLambert-St Louis
$204
Find similar
Southwest
Sep 13
STL12:30 pmLambert-St Louis
8h 55m
1 stop
MHT10:25 pmManchester
Sep 20
MHT9:05 amManchester
6h 40m
1 stop
STL2:45 pmLambert-St Louis
$210
Find similar
Southwest
Sep 2
STL7:10 amLambert-St Louis
6h 40m
1 stop
MHT2:50 pmManchester
Sep 9
MHT7:10 amManchester
7h 00m
2 stops
STL1:10 pmLambert-St Louis
$240
Find similar

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
Sep 4
STL6:00 pmLambert-St Louis
5h 09m
1 stop
MHT12:09 amManchester
Sep 7
MHT6:00 amManchester
7h 16m
1 stop
STL12:16 pmLambert-St Louis
$243
Find similar
American Airlines
Sep 13
STL6:10 amLambert-St Louis
10h 18m
2 stops
MHT5:28 pmManchester
Sep 20
MHT5:59 pmManchester
4h 54m
1 stop
STL9:53 pmLambert-St Louis
$258
Find similar
American Airlines
Oct 30
STL6:00 amLambert-St Louis
4h 54m
1 stop
MHT11:54 amManchester
Nov 1
MHT12:25 pmManchester
6h 46m
1 stop
STL6:11 pmLambert-St Louis
$407
Find similar

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 August 6, 2025.
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

Tue 9/2

2:15 pm-10:15 pm

1 stop7h 00m

Manchester

Tue 9/9

9:15 am-12:45 pm

1 stop4h 30m

$204

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Sat 9/13

12:30 pm-10:25 pm

1 stop8h 55m

Manchester

Sat 9/20

9:05 am-2:45 pm

1 stop6h 40m

$210

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Tue 9/2

7:10 am-2:50 pm

1 stop6h 40m

Manchester

Tue 9/9

7:10 am-1:10 pm

2 stops7h 00m

$240

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Thu 9/4

6:00 pm-12:09 am

1 stop5h 09m

Manchester

Sun 9/7

6:00 am-12:16 pm

1 stop7h 16m

$243

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Sat 9/13

6:10 am-5:28 pm

2 stops10h 18m

Manchester

Sat 9/20

5:59 pm-9:53 pm

1 stop4h 54m

$258

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Sat 9/13

6:35 am-2:57 pm

2 stops7h 22m

Manchester

Sat 9/20

1:30 pm-9:32 pm

2 stops9h 02m

$305

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Thu 10/30

6:00 am-11:54 am

1 stop4h 54m

Manchester

Sat 11/1

12:25 pm-6:11 pm

1 stop6h 46m

$407

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Thu 10/30

11:49 am-11:44 pm

2 stops10h 55m

Manchester

Fri 10/31

2:27 pm-10:45 pm

2 stops9h 18m

$417

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Tue 8/19

10:10 am-4:57 pm

1 stop5h 47m

Manchester

Sat 8/23

3:56 pm-8:47 pm

1 stop5h 51m

$447

St. LouisManchester

STL - MHT

STLMHT

Lambert-St Louis

Wed 9/3

6:15 am-3:02 pm

3 stops31h 47m

Manchester

Sat 9/6

1:30 pm-11:44 pm

2 stops11h 14m

$451

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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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 $290.

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

Our data shows that Tuesday is the least expensive day to fly to Manchester, New Hampshire. Tickets to fly out on this day can be as low as $337. Be sure to avoid booking your departure on a Saturday as prices are generally higher than usual. According to our data, the average ticket price to Manchester, New Hampshire on Saturday is $481.

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

Our most recent data shows that the best time of day to fly to Manchester, New Hampshire is at noon. Flights from St. Louis to Manchester, New Hampshire during this time can be as low as $345. Flights in the afternoon are often more expensive with an average ticket price of $436.

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

As of August 2025, prices for St. Louis to Manchester, New Hampshire flights are approximately 33% cheaper when compared to flights at the same time last year.

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

Best Price Found

$90

Fastest flight time

4h 22m

Direct flights

None

Airports in Manchester, New Hampshire

1 airport
The best one-way flight to Manchester, New Hampshire from St. Louis in the past 72 hours is $90. The best round-trip flight deal from St. Louis to Manchester, New Hampshire found on momondo in the last 72 hours is $204.
The fastest flight from St. Louis to Manchester, New Hampshire takes 4h 22m
There are no direct flights from St. Louis to Manchester, New Hampshire. Popular non-direct route for this connection is Lambert-St Louis Airport - Manchester Airport.
There is 1 airport near Manchester, New Hampshire: Manchester (MHT)
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 22m, 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
4,244 reviews
Search Southwest flights
American AirlinesPriceFrom $266Free CancellationRating
7.2
10,000 reviews
Search American Airlines flights

Traveling to a place near Boston?

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