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Cheap flights from Connecticut to St. Louis from $57

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 3/3. 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 Connecticut to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
6:00 pm - 6:51 am
EWR
-
STL
13h 51m
1 stop
Multiple Airlines Logo
8:22 pm - 8:05 am
STL
-
EWR
10h 43m
1 stop
$129Multiple Airlines
Fri, Feb 20 - Mon, Feb 23
Multiple Airlines Logo
10:31 pm - 6:51 am
EWR
-
STL
9h 20m
1 stop
Multiple Airlines Logo
8:17 pm - 8:05 am
STL
-
EWR
10h 48m
1 stop
$131Multiple Airlines
Tue, Feb 24 - Wed, Feb 25
Frontier Logo
8:08 pm - 11:19 pm
BDL
-
STL
28h 11m
1 stop
Frontier Logo
4:55 pm - 7:17 pm
STL
-
BDL
25h 22m
1 stop
$171Frontier
Mon, May 4 - Wed, May 6
Frontier Logo
5:50 pm - 11:59 pm
BDL
-
STL
7h 09m
1 stop
Frontier Logo
3:49 pm - 9:23 am
STL
-
BDL
16h 34m
1 stop
$192Frontier
Thu, Feb 19 - Tue, Feb 24
Southwest Logo
3:05 pm - 5:00 pm
LGA
-
STL
2h 55mnonstop
Southwest Logo
7:35 pm - 11:00 pm
STL
-
LGA
2h 25mnonstop
$266Southwest
Wed, Apr 8 - Wed, Apr 8
American Airlines Logo
5:52 pm - 7:59 pm
LGA
-
STL
3h 07mnonstop
American Airlines Logo
9:10 am - 3:02 pm
STL
-
LGA
4h 52m
1 stop
$269American Airlines
Wed, May 6 - Sat, May 9
American Airlines Logo
7:40 pm - 9:36 pm
LGA
-
STL
2h 56mnonstop
American Airlines Logo
5:46 am - 3:09 pm
STL
-
LGA
8h 23m
1 stop
$270American Airlines
Fri, Apr 3 - Wed, Apr 8
Southwest Logo
6:00 am - 8:00 am
LGA
-
STL
3h 00mnonstop
Southwest Logo
7:40 pm - 10:55 pm
STL
-
LGA
2h 15mnonstop
$271Southwest
Thu, Mar 19 - Sat, Mar 21
United Airlines Logo
5:48 am - 10:36 am
PVD
-
STL
5h 48m
1 stop
United Airlines Logo
7:41 am - 3:02 pm
STL
-
PVD
6h 21m
1 stop
$337United Airlines
Sat, Feb 28 - Wed, Mar 4
United Airlines Logo
5:45 am - 12:27 pm
PVD
-
STL
7h 42m
1 stop
United Airlines Logo
9:10 am - 3:18 pm
STL
-
PVD
5h 08m
1 stop
$359United Airlines
Thu, Mar 26 - Mon, Mar 30

Delta flights from Connecticut to St. Louis

Our best Delta deals on Connecticut to St. Louis flight tickets
Delta
May 12
JFK3:10 pmNew York John F Kennedy Intl
2h 55m
STL5:05 pmLambert-St Louis
May 19
STL5:15 pmLambert-St Louis
4h 48m
1 stop
JFK11:03 pmNew York John F Kennedy Intl
$283
Delta
May 5
LGA7:45 amNew York LaGuardia
2h 52m
STL9:37 amLambert-St Louis
May 8
STL6:00 amLambert-St Louis
2h 28m
LGA9:28 amNew York LaGuardia
$285
Delta
May 13
LGA11:59 amNew York LaGuardia
6h 47m
1 stop
STL5:46 pmLambert-St Louis
May 19
STL6:00 amLambert-St Louis
2h 28m
LGA9:28 amNew York LaGuardia
$288

Frontier flights from Connecticut to St. Louis

Our best Frontier deals on Connecticut to St. Louis flight tickets
Frontier
Mar 1
EWR10:30 pmNewark
9h 21m
1 stop
STL6:51 amLambert-St Louis
Mar 6
STL1:09 pmLambert-St Louis
10h 59m
1 stop
EWR1:08 amNewark
$146
Frontier
Feb 20
EWR10:30 pmNewark
11h 26m
1 stop
STL8:56 amLambert-St Louis
Mar 24
STL11:27 amLambert-St Louis
9h 03m
1 stop
EWR9:30 pmNewark
$160
Frontier
Apr 24
EWR10:29 pmNewark
9h 21m
1 stop
STL6:50 amLambert-St Louis
Apr 26
STL11:21 amLambert-St Louis
12h 55m
1 stop
EWR1:16 amNewark
$161

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 February 8, 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

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Fri 2/20

6:00 pm-6:51 am

1 stop13h 51m

Lambert-St Louis

Mon 2/23

8:22 pm-8:05 am

1 stop10h 43m

$129

NewarkSt. Louis

EWR - STL

EWRSTL

Newark

Tue 2/24

10:31 pm-6:51 am

1 stop9h 20m

Lambert-St Louis

Wed 2/25

8:17 pm-8:05 am

1 stop10h 48m

$131

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Mon 5/4

8:08 pm-11:19 pm

1 stop28h 11m

Lambert-St Louis

Wed 5/6

4:55 pm-7:17 pm

1 stop25h 22m

$171

HartfordSt. Louis

BDL - STL

BDLSTL

Hartford Bradley Intl

Thu 2/19

5:50 pm-11:59 pm

1 stop7h 09m

Lambert-St Louis

Tue 2/24

3:49 pm-9:23 am

1 stop16h 34m

$192

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 4/8

3:05 pm-5:00 pm

Nonstop2h 55m

Lambert-St Louis

Wed 4/8

7:35 pm-11:00 pm

Nonstop2h 25m

$266

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Wed 5/6

5:52 pm-7:59 pm

Nonstop3h 07m

Lambert-St Louis

Sat 5/9

9:10 am-3:02 pm

1 stop4h 52m

$269

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Fri 4/3

7:40 pm-9:36 pm

Nonstop2h 56m

Lambert-St Louis

Wed 4/8

5:46 am-3:09 pm

1 stop8h 23m

$270

New YorkSt. Louis

LGA - STL

LGASTL

New York LaGuardia

Thu 3/19

6:00 am-8:00 am

Nonstop3h 00m

Lambert-St Louis

Sat 3/21

7:40 pm-10:55 pm

Nonstop2h 15m

$271

ProvidenceSt. Louis

PVD - STL

PVDSTL

Providence-TFGreen

Sat 2/28

5:48 am-10:36 am

1 stop5h 48m

Lambert-St Louis

Wed 3/4

7:41 am-3:02 pm

1 stop6h 21m

$337

ProvidenceSt. Louis

PVD - STL

PVDSTL

Providence-TFGreen

Thu 3/26

5:45 am-12:27 pm

1 stop7h 42m

Lambert-St Louis

Mon 3/30

9:10 am-3:18 pm

1 stop5h 08m

$359

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 $303. The month of September is another great option to travel to St. Louis, with average flight prices from Connecticut averaging around $356.

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 28m

Direct flights

Every day

Airports in St. Louis

1 airport
The fastest flight from Connecticut to St. Louis takes 2h 28m
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

  • 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.

  • What is the most popular plane model from Connecticut to St. Louis?

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
FrontierPriceFrom $81Free CancellationRating
5.7
3,052 reviews
Search Frontier flights
DeltaPriceFrom $236Free CancellationRating
7.9
8,172 reviews
Search Delta flights
American AirlinesPriceFrom $246Free CancellationRating
7.2
11,249 reviews
Search American Airlines flights
SouthwestPriceFrom $279Free CancellationRating
8.0
4,280 reviews
Search Southwest flights
United AirlinesPriceFrom $342Free CancellationRating
7.4
9,254 reviews
Search United Airlines 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
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
Collinsville
St. Peters
Fenton
Wentzville
Alton
Farmington
Clayton
Edwardsville
Eureka
Festus
Litchfield
Glencoe
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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