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$126+ Cheap flights from New Haven to St. Louis (HVN - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 3/22. Fares are subject to change and may not be available on all flights or dates of travel.
HVN — STL
Mar 26 — Apr 21
Thu 3/26
Thu 4/2
1 adult, Economy
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1. Tell us where you want to go

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2. Select your favorite providers

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Cheap flight deals from New Haven to St. Louis

Cheapest flights from New Haven to St. Louis
Explore the most affordable flight options available from New Haven to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 24, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/48:36 pm
HVN
-
STL
1 stop14h 01m
Multiple Airlines
Sun 6/711:32 am
STL
-
HVN
1 stop7h 24m
Multiple Airlines
Deal found 2/22$393
This Kiwi.com deal was found by Cheapflights users on 2/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/102:46 pm
HVN
-
STL
1 stop9h 33m
Multiple Airlines
Sat 3/147:52 am
STL
-
HVN
2 stops29h 54m
Multiple Airlines
Deal found 2/23$534

Find flight deals from New Haven to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from New Haven (HVN) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$393
(Kiwi.com)

One-way from

$126
(Kiwi.com)

Popular in

November

Cheapest in

August

Average price

$366
Provider with most accurate pricing for Tweed-New Haven-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Tweed-New Haven-Lambert-St Louis flights.
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From Tweed-New Haven to Lambert-St Louis
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One-way flight from Tweed-New Haven to Lambert-St Louis
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Highest demand for flights based on searches. 13% potential increase in price ($52 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($7 potential savings vs. average RT price).
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Average for round-trip flights in February 2026
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Cheapflights 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, Cheapflights users made 2,558,603 searches. Data last updated February 24, 2026.
Use the filters below to find and compare flights from New Haven to St. Louis that are best for you.

Fly from

New Haven

Fly to

St. Louis

Route

Depart

Return

Price

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Thu 6/4

8:36 pm-9:37 am

1 stop14h 01m

Lambert-St Louis

Sun 6/7

11:32 am-7:56 pm

1 stop7h 24m

$393

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Tue 3/10

2:46 pm-11:19 pm

1 stop9h 33m

Lambert-St Louis

Sat 3/14

8:53 pm-8:04 pm

1 stop22h 11m

$621

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Sun 3/22

3:26 pm-10:32 am

2 stops44h 06m

$126

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Fri 6/5

2:51 pm-11:57 pm

2 stops34h 06m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/21

Compare providers for flights from New Haven to St. Louis

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from New Haven to St. Louis in February.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on New Haven-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on New Haven-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from New Haven-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on New Haven-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for New Haven-St. Louis flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from New Haven to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from New Haven with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from New Haven to St. Louis

What is the cheapest month to book a flight from New Haven to St. Louis?

Currently, March is the cheapest month in which you can book a flight from New Haven to St. Louis (average of $68). Flying from New Haven to St. Louis in December is currently the most expensive (average of $257). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

Related info for your journey

Find useful and relevant information for your journey from New Haven to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • Can I find deals for flights from New Haven to St. Louis that include hotel bookings?

    Yes. In addition to deals on New Haven to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from New Haven to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from New Haven to St. Louis.

  • Can I find deals for business class flights from New Haven to St. Louis?

    Yes. Cheapflights offers flight deals from New Haven to St. Louis by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from New Haven to St. Louis?

    Currently, March is the cheapest month in which you can book a flight from New Haven to St. Louis (average of $68). Flying from New Haven to St. Louis in December is currently the most expensive (average of $257). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Fenton
Maryland Heights
Collinsville
Eureka
Wentzville
Glencoe
Chesterfield
Alton
Farmington
Festus

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