Latest deals
Insights
When to book
FAQs
Reviews
Price Alerts

Cheap flights from St. Louis to Boston from $123

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 9/19. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

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
5:00 am - 12:10 pmSTL  Lambert-St Louis-MHT Manchester
6h 10m1 stop Chicago O'Hare Intl
American Airlines Logo
5:05 pm - 12:19 amMHT  Manchester-STL Lambert-St Louis
8h 14m1 stop Chicago O'Hare Intl
$245American Airlines
Thu, Oct 29 - Sat, Oct 31
American Airlines Logo
5:00 am - 12:10 pmSTL  Lambert-St Louis-MHT Manchester
6h 10m1 stop Chicago O'Hare Intl
American Airlines Logo
1:01 pm - 7:25 pmMHT  Manchester-STL Lambert-St Louis
7h 24m1 stop Philadelphia
$245American Airlines
Thu, Oct 29 - Sat, Oct 31
Southwest Logo
4:05 pm - 9:05 pmSTL  Lambert-St Louis-MHT Manchester
4h 00m1 stop Chicago Midway
Southwest Logo
8:40 am - 3:05 pmMHT  Manchester-STL Lambert-St Louis
7h 25m1 stop Baltimore/Washington
$245Southwest
Wed, Oct 28 - Sat, Oct 31
American Airlines Logo
11:01 am - 5:18 pmSTL  Lambert-St Louis-MHT Manchester
5h 17m1 stop Chicago O'Hare Intl
American Airlines Logo
7:03 am - 1:16 pmMHT  Manchester-STL Lambert-St Louis
7h 13m1 stop Chicago O'Hare Intl
$246American Airlines
Wed, Sep 9 - Wed, Sep 16
Southwest Logo
2:20 pm - 10:40 pmSTL  Lambert-St Louis-MHT Manchester
7h 20m2 stops Atlanta Hartsfield-Jackson Baltimore/Washington
Southwest Logo
8:40 am - 3:05 pmMHT  Manchester-STL Lambert-St Louis
7h 25m1 stop Baltimore/Washington
$250Southwest
Wed, Oct 28 - Sat, Oct 31
Southwest Logo
2:30 pm - 11:55 pmSTL  Lambert-St Louis-MHT Manchester
8h 25m2 stops Nashville Intl Baltimore/Washington
Southwest Logo
8:40 am - 3:05 pmMHT  Manchester-STL Lambert-St Louis
7h 25m1 stop Baltimore/Washington
$250Southwest
Thu, Oct 29 - Sat, Oct 31
American Airlines Logo
6:00 am - 11:42 amSTL  Lambert-St Louis-MHT Manchester
4h 42m1 stop Chicago O'Hare Intl
American Airlines Logo
5:05 pm - 12:19 amMHT  Manchester-STL Lambert-St Louis
8h 14m1 stop Chicago O'Hare Intl
$339American Airlines
Wed, Sep 2 - Wed, Oct 21
United Airlines Logo
8:25 am - 3:03 pmSTL  Lambert-St Louis-MHT Manchester
5h 38m1 stop Washington, D.C. Dulles Intl
United Airlines Logo
1:30 pm - 9:13 pmMHT  Manchester-STL Lambert-St Louis
8h 43m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
$340United Airlines
Tue, Jan 26 - Sat, Jan 30
United Airlines Logo
8:33 am - 6:59 pmSTL  Lambert-St Louis-MHT Manchester
9h 26m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl
United Airlines Logo
1:30 pm - 9:13 pmMHT  Manchester-STL Lambert-St Louis
8h 43m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
$345United Airlines
Tue, Jan 26 - Sat, Jan 30
United Airlines Logo
7:25 am - 7:00 pmSTL  Lambert-St Louis-MHT Manchester
10h 35m2 stops Chicago O'Hare Intl Washington, D.C. Dulles Intl
United Airlines Logo
2:50 pm - 9:21 pmMHT  Manchester-STL Lambert-St Louis
7h 31m2 stops Washington, D.C. Dulles Intl Chicago O'Hare Intl
$349United Airlines
Wed, Sep 2 - Wed, Oct 21

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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
Oct 29
STL5:00 amLambert-St Louis
6h 10m
1 stop
MHT12:10 pmManchester
Oct 31
MHT5:05 pmManchester
8h 14m
1 stop
STL12:19 amLambert-St Louis
$245
American Airlines
Sep 9
STL11:01 amLambert-St Louis
5h 17m
1 stop
MHT5:18 pmManchester
Sep 16
MHT7:03 amManchester
7h 13m
1 stop
STL1:16 pmLambert-St Louis
$246
American Airlines
Oct 29
STL5:00 amLambert-St Louis
6h 10m
1 stop
MHT12:10 pmManchester
Oct 31
MHT5:05 pmManchester
8h 14m
1 stop
STL12:19 amLambert-St Louis
$339

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
Jan 26
STL8:25 amLambert-St Louis
5h 38m
1 stop
MHT3:03 pmManchester
Jan 30
MHT1:30 pmManchester
8h 43m
2 stops
STL9:13 pmLambert-St Louis
$340
United Airlines
Sep 2
STL7:25 amLambert-St Louis
10h 35m
2 stops
MHT7:00 pmManchester
Oct 21
MHT2:50 pmManchester
7h 31m
2 stops
STL9:21 pmLambert-St Louis
$349
United Airlines
Jan 26
STL8:25 amLambert-St Louis
5h 38m
1 stop
MHT3:03 pmManchester
Jan 30
MHT1:30 pmManchester
6h 08m
1 stop
STL6:38 pmLambert-St Louis
$368

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 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 Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Thu 10/29

5:00 am-12:10 pm

1 stop6h 10m

Manchester

Sat 10/31

5:05 pm-12:19 am

1 stop8h 14m

$245

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Thu 10/29

5:00 am-12:10 pm

1 stop6h 10m

Manchester

Sat 10/31

1:01 pm-7:25 pm

1 stop7h 24m

$245
Quickest round-trip

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Wed 10/28

4:05 pm-9:05 pm

1 stop4h 00m

Manchester

Sat 10/31

8:40 am-3:05 pm

1 stop7h 25m

$245

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Wed 9/9

11:01 am-5:18 pm

1 stop5h 17m

Manchester

Wed 9/16

7:03 am-1:16 pm

1 stop7h 13m

$246

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Wed 10/28

2:20 pm-10:40 pm

2 stops7h 20m

Manchester

Sat 10/31

8:40 am-3:05 pm

1 stop7h 25m

$250

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Thu 10/29

2:30 pm-11:55 pm

2 stops8h 25m

Manchester

Sat 10/31

8:40 am-3:05 pm

1 stop7h 25m

$250

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Wed 9/2

6:00 am-11:42 am

1 stop4h 42m

Manchester

Wed 10/21

5:05 pm-12:19 am

1 stop8h 14m

$339

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Tue 1/26

8:25 am-3:03 pm

1 stop5h 38m

Manchester

Sat 1/30

1:30 pm-9:13 pm

2 stops8h 43m

$340

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Tue 1/26

8:33 am-6:59 pm

2 stops9h 26m

Manchester

Sat 1/30

1:30 pm-9:13 pm

2 stops8h 43m

$345

St. LouisManchester

STL Lambert-St Louis - MHT Manchester

STLMHT

Lambert-St Louis

Wed 9/2

7:25 am-7:00 pm

2 stops10h 35m

Manchester

Wed 10/21

2:50 pm-9:21 pm

2 stops7h 31m

$349

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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?

Prices are currently low for flights on this route.

Typical prices usually range from $338 to $379.
The lowest price recently found on this route was $245.

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 October instead. Flights to Manchester, New Hampshire in October, while not as cheap as those in May, still average around $346.

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

You could potentially save up to 24% 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 25m

Direct flights

None
The fastest flight from St. Louis to Manchester, New Hampshire takes 4h 25m
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 25m, 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
American AirlinesPriceFrom $256Free CancellationRating
7.1
11,946 reviews
Search American Airlines flights
SouthwestPriceFrom $303Free CancellationRating
8.0
4,217 reviews
Search Southwest 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.

An easier way to manage your Manchester, New Hampshire trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Tue 9/15
Tue 9/22
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States