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Cheap flights from Connecticut to St. Louis from $106

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Connecticut to St. Louis departing on 9/16. 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

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Find the cheapest flights from Connecticut to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
3:42 pm - 11:59 pm
HVN
-
STL
9h 17m
1 stop
Multiple Airlines Logo
4:57 pm - 2:02 pm
STL
-
HVN
20h 05m
2 stops
$309Multiple Airlines
Wed, Jul 29 - Mon, Aug 3
Delta Logo
6:00 am - 10:48 am
BDL
-
STL
5h 48m
1 stop
Delta Logo
7:20 am - 4:04 pm
STL
-
BDL
7h 44m
1 stop
$317Delta
Wed, Oct 28 - Sat, Oct 31
Multiple Airlines Logo
11:31 am - 11:59 pm
BDL
-
STL
13h 28m
1 stop
Multiple Airlines Logo
4:57 pm - 6:52 pm
STL
-
BDL
24h 55m
2 stops
$319Multiple Airlines
Wed, Aug 5 - Fri, Aug 7
Frontier Logo
10:00 pm - 8:57 am
LGA
-
STL
11h 57m
1 stop
Frontier Logo
4:09 pm - 4:00 pm
STL
-
LGA
22h 51m
1 stop
$320Frontier
Fri, Jul 10 - Mon, Jul 13
Delta Logo
6:30 am - 8:08 am
LGA
-
STL
2h 38mnonstop
Delta Logo
6:05 am - 9:38 am
STL
-
LGA
2h 33mnonstop
$321Delta
Thu, Aug 6 - Thu, Aug 13
Frontier Logo
1:00 pm - 11:59 pm
JFK
-
STL
11h 59m
2 stops
Frontier Logo
4:57 pm - 11:54 am
STL
-
JFK
17h 57m
1 stop
$322Frontier
Wed, Aug 12 - Mon, Aug 17
American Airlines Logo
10:48 am - 5:01 pm
BDL
-
STL
7h 13m
1 stop
American Airlines Logo
4:54 pm - 10:54 pm
STL
-
BDL
5h 00m
1 stop
$322American Airlines
Sat, Aug 15 - Mon, Aug 17
Southwest Logo
1:10 pm - 7:55 pm
LGA
-
STL
7h 45m
2 stops
Southwest Logo
4:20 pm - 7:40 pm
STL
-
LGA
2h 20mnonstop
$322Southwest
Thu, Aug 6 - Sat, Aug 8
Southwest Logo
2:00 pm - 9:10 pm
LGA
-
STL
8h 10m
1 stop
Southwest Logo
8:30 am - 4:55 pm
STL
-
LGA
7h 25m
1 stop
$326Southwest
Wed, Sep 2 - Thu, Sep 3
American Airlines Logo
6:11 am - 12:54 pm
LGA
-
STL
7h 43m
1 stop
American Airlines Logo
10:44 am - 4:31 pm
STL
-
LGA
4h 47m
1 stop
$327American Airlines
Thu, Sep 3 - Tue, Sep 8

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American Airlines flights from Connecticut to St. Louis

Our best American Airlines deals on Connecticut to St. Louis flight tickets
American Airlines
Aug 15
BDL10:48 amHartford Bradley Intl
7h 13m
1 stop
STL5:01 pmLambert-St Louis
Aug 17
STL4:54 pmLambert-St Louis
5h 00m
1 stop
BDL10:54 pmHartford Bradley Intl
$322
American Airlines
Sep 3
LGA6:11 amNew York LaGuardia
7h 43m
1 stop
STL12:54 pmLambert-St Louis
Sep 8
STL10:44 amLambert-St Louis
4h 47m
1 stop
LGA4:31 pmNew York LaGuardia
$327
American Airlines
Aug 15
BDL7:24 pmHartford Bradley Intl
5h 10m
1 stop
STL11:34 pmLambert-St Louis
Aug 17
STL5:57 pmLambert-St Louis
4h 54m
1 stop
BDL11:51 pmHartford Bradley Intl
$338

Frontier flights from Connecticut to St. Louis

Our best Frontier deals on Connecticut to St. Louis flight tickets
Frontier
Jul 10
LGA10:00 pmNew York LaGuardia
11h 57m
1 stop
STL8:57 amLambert-St Louis
Jul 12
STL4:09 pmLambert-St Louis
22h 51m
1 stop
LGA4:00 pmNew York LaGuardia
$320
Frontier
Aug 12
JFK1:00 pmNew York John F Kennedy Intl
11h 59m
2 stops
STL11:59 pmLambert-St Louis
Aug 17
STL4:57 pmLambert-St Louis
17h 57m
1 stop
JFK11:54 amNew York John F Kennedy Intl
$322
Frontier
Jul 17
LGA10:00 pmNew York LaGuardia
11h 57m
1 stop
STL8:57 amLambert-St Louis
Jul 20
STL8:08 pmLambert-St Louis
23h 49m
2 stops
LGA8:57 pmNew York LaGuardia
$323

momondo Fare Finder

 
Customize your flight search to find flights from Connecticut to St. Louis 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 June 29, 2026.
Use the filters below to find and compare flights from Connecticut to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Wed 7/29

3:42 pm-11:59 pm

1 stop9h 17m

Lambert-St Louis

Mon 8/3

4:57 pm-2:02 pm

2 stops20h 05m

$309

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 10/28

6:00 am-10:48 am

1 stop5h 48m

Lambert-St Louis

Sat 10/31

7:20 am-4:04 pm

1 stop7h 44m

$317

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Wed 8/5

11:31 am-11:59 pm

1 stop13h 28m

Lambert-St Louis

Fri 8/7

4:57 pm-6:52 pm

2 stops24h 55m

$319

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Fri 7/10

10:00 pm-8:57 am

1 stop11h 57m

Lambert-St Louis

Mon 7/13

4:09 pm-4:00 pm

1 stop22h 51m

$320
Quickest round-trip

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 8/6

6:30 am-8:08 am

Nonstop2h 38m

Lambert-St Louis

Thu 8/13

6:05 am-9:38 am

Nonstop2h 33m

$321

New YorkSt. Louis

JFK - STL

JFKSTL

New York John F Kennedy Intl

Wed 8/12

1:00 pm-11:59 pm

2 stops11h 59m

Lambert-St Louis

Mon 8/17

4:57 pm-11:54 am

1 stop17h 57m

$322

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Sat 8/15

10:48 am-5:01 pm

1 stop7h 13m

Lambert-St Louis

Mon 8/17

4:54 pm-10:54 pm

1 stop5h 00m

$322

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 8/6

1:10 pm-7:55 pm

2 stops7h 45m

Lambert-St Louis

Sat 8/8

4:20 pm-7:40 pm

Nonstop2h 20m

$322

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 9/2

2:00 pm-9:10 pm

1 stop8h 10m

Lambert-St Louis

Thu 9/3

8:30 am-4:55 pm

1 stop7h 25m

$326

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 9/3

6:11 am-12:54 pm

1 stop7h 43m

Lambert-St Louis

Tue 9/8

10:44 am-4:31 pm

1 stop4h 47m

$327

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 St. Louis from

How to get the cheapest flight ticket from Connecticut to St. Louis

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 St. Louis?

In general, August is the cheapest month to fly from Connecticut to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $74. The month of September is another great option to travel to St. Louis, with average flight prices from Connecticut averaging around $81.

Cheap Connecticut to St. Louis flight deals and tips

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

Fastest flight time

2h 27m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Connecticut to St. Louis takes 2h 27m
Direct flights go from Connecticut to St. Louis every day.
There is 1 airport in St. Louis. From Connecticut there are direct flights to Lambert-St Louis (STL).
Search flight deals

Frequently asked questions about flying from Connecticut to St. Louis

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

    Prices for flights from Connecticut to Lambert-St Louis Airport were last updated today.

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

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Connecticut to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The necessary travel and health documents for your Lambert-St Louis Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's license and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.

Best airlines flying from Connecticut to St. Louis

Compare and see reviews for airlines that fly from Connecticut to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $242Free CancellationRating
7.4
9,894 reviews
Search United Airlines flights
American AirlinesPriceFrom $246Free CancellationRating
7.1
11,770 reviews
Search American Airlines flights
DeltaPriceFrom $246Free CancellationRating
7.8
8,449 reviews
Search Delta flights
SouthwestPriceFrom $274Free CancellationRating
7.9
4,246 reviews
Search Southwest flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Fairview Heights
Hermann
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Alton
Wentzville
Farmington
Fenton
Clayton
Festus
Eureka
Litchfield
Edwardsville
Grafton
Shrewsbury

Why use momondo?

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

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Connecticut to St. Louis. momondo saves you time and could save you money on your trip.

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

All flight searches from Connecticut to St. Louis on momondo can be filtered to show those which offer flexible booking policies.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Connecticut to St. Louis.

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

Price alerts on flights to St. Louis from Connecticut 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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