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Cheap flights from New Haven to St. Louis from $147

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from New Haven to St. Louis departing on 2/24. 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 New Haven to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Multiple Airlines Logo
2:46 pm - 10:27 pm
HVN
-
STL
8h 41m
1 stop
Multiple Airlines Logo
8:22 pm - 1:41 pm
STL
-
HVN
40h 19m
2 stops
$360Multiple Airlines
Tue, Feb 24 - Fri, Feb 27
Multiple Airlines Logo
8:44 pm - 7:02 am
HVN
-
STL
11h 18m
1 stop
Multiple Airlines Logo
4:51 pm - 2:46 pm
STL
-
HVN
44h 55m
2 stops
$412Multiple Airlines
Thu, Mar 26 - Tue, Mar 31
Multiple Airlines Logo
12:07 pm - 9:49 am
HVN
-
STL
22h 42m
2 stops
Multiple Airlines Logo
7:52 am - 8:04 pm
STL
-
HVN
11h 12m
1 stop
$431Multiple Airlines
Fri, Mar 6 - Sun, Mar 8
Multiple Airlines Logo
8:44 pm - 7:51 am
HVN
-
STL
12h 07m
1 stop
Multiple Airlines Logo
11:21 am - 11:27 am
STL
-
HVN
23h 06m
2 stops
$511Multiple Airlines
Thu, Apr 9 - Thu, Apr 16
Multiple Airlines Logo
3:42 pm - 11:57 pm
HVN
-
STL
9h 15m
1 stop
Multiple Airlines Logo
4:44 pm - 2:02 pm
STL
-
HVN
20h 18m
1 stop
$516Multiple Airlines
Sat, Aug 1 - Mon, Aug 3
Multiple Airlines Logo
3:42 pm - 11:57 pm
HVN
-
STL
9h 15m
1 stop
Multiple Airlines Logo
8:08 pm - 2:02 pm
STL
-
HVN
16h 54m
2 stops
$655Multiple Airlines
Sat, Aug 1 - Mon, Aug 3

momondo Fare Finder

 
Customize your flight search to find flights from New Haven 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 11, 2026.
Use the filters below to find and compare flights from New Haven to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Tue 2/24

2:46 pm-10:27 pm

1 stop8h 41m

Lambert-St Louis

Fri 2/27

8:22 pm-1:41 pm

2 stops40h 19m

$360

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Thu 3/26

8:44 pm-7:02 am

1 stop11h 18m

Lambert-St Louis

Tue 3/31

4:51 pm-2:46 pm

2 stops44h 55m

$412

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Fri 3/6

12:07 pm-9:49 am

2 stops22h 42m

Lambert-St Louis

Sun 3/8

7:52 am-8:04 pm

1 stop11h 12m

$431

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Thu 4/9

8:44 pm-7:51 am

1 stop12h 07m

Lambert-St Louis

Thu 4/16

11:21 am-11:27 am

2 stops23h 06m

$511

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Sat 8/1

3:42 pm-11:57 pm

1 stop9h 15m

Lambert-St Louis

Mon 8/3

4:44 pm-2:02 pm

1 stop20h 18m

$516

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Sat 8/1

3:42 pm-11:57 pm

1 stop9h 15m

Lambert-St Louis

Mon 8/3

8:08 pm-2:02 pm

2 stops16h 54m

$655

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Tue 2/24

2:46 pm-6:51 am

2 stops17h 05m

$147

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Tue 2/24

2:46 pm-9:26 pm

3 stops55h 40m

$210

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Tue 2/24

2:46 pm-10:27 pm

1 stop8h 41m

$228

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

How to get the cheapest flight ticket from New Haven 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 day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Wednesday when prices can be found for as low as $315. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $443. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from New Haven in the morning is the least expensive time of day to depart. momondo users have found prices as low as $346 when looking at flights departing in the morning. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $371 per ticket.

When to book flights from New Haven to St. Louis

Are you open to changing your travel dates? Check out the ideal times to fly from New Haven to St. Louis according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap New Haven to St. Louis (HVN to STL) flight deals and tips

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

Fastest flight time

8h 41m

Direct flights

None
The fastest flight from New Haven to St. Louis takes 8h 41m
There are no direct flights from New Haven to St. Louis. There are no popular flight routes from New Haven to St. Louis.
Search flight deals

  • How far is Tweed-New Haven to Lambert-St Louis by plane?

    Lambert-St Louis is 930.8 mi away from Tweed-New Haven. In terms of flight time, this usually takes a little over 8h 41m.

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

    Prices for flights from Tweed-New Haven Airport to Lambert-St Louis Airport were last updated today.

  • How old do you have to be to fly from Tweed-New Haven Airport to Lambert-St Louis 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 Tweed-New Haven Airport to Lambert-St Louis Airport.

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

    The travel and health documents required for your trip to Lambert-St Louis Airport can vary based on your itinerary and personal situation. As a rule, consider having multiple documents such as a national ID card or driver’s license, and a passport valid for six-months after you plan to arrive at Lambert-St Louis Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

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

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 New Haven to St. Louis?

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

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

momondo does allow users to show only those flights to St. Louis from New Haven which offer a flexible booking policy as well as other useful filters and features.

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

Once all potential New Haven to St. Louis flight options are in front of you, momondo lets you sort and filter flights based on preferences such as airline, price and flight times amongst many other options.

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

Yes momondo offers price alerts on flights to St. Louis from New Haven. After performing a search on this page you should be able to see the price alert set up feature. Simply provide a valid email address and momondo will instantly alert you when prices change.

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