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$265+ Cheap flights from St. Louis to New Haven (STL - HVN)

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 4/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — HVN
Apr 5 — Apr 121
Sun 4/5
Sun 4/12
1 adult, Economy
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Cheap flight deals from St. Louis to New Haven

Cheapest flights from St. Louis to New Haven
Explore the most affordable flight options available from St. Louis to New Haven. Find the lowest fares from popular airlines and budget airlines, with prices last updated on March 6, 2026.

This Kiwi.com deal was found by Cheapflights users on 3/1. 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 3/314:51 pm
STL
-
HVN
2 stops44h 55m
Multiple Airlines
Tue 4/72:46 pm
HVN
-
STL
1 stop9h 39m
Multiple Airlines
Deal found 3/1$339
This Kiwi.com deal was found by Cheapflights users on 3/1. 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.
Mon 3/168:10 pm
STL
-
HVN
2 stops15h 12m
Multiple Airlines
Thu 3/198:44 pm
HVN
-
STL
1 stop11h 38m
Multiple Airlines
Deal found 3/1$416
This Kiwi.com deal was found by Cheapflights users on 3/5. 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.
Sun 4/194:59 pm
STL
-
HVN
2 stops17h 28m
Multiple Airlines
Sun 4/268:44 pm
HVN
-
STL
1 stop27h 35m
Multiple Airlines
Deal found 3/5$429
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Wed 3/48:17 pm
STL
-
HVN
2 stops22h 47m
Multiple Airlines
Tue 3/102:46 pm
HVN
-
STL
1 stop9h 33m
Multiple Airlines
Deal found 3/3$476
This Kiwi.com deal was found by Cheapflights users on 3/3. 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.
Sun 3/224:51 pm
STL
-
HVN
2 stops17h 36m
Multiple Airlines
Tue 3/312:46 pm
HVN
-
STL
1 stop9h 33m
Multiple Airlines
Deal found 3/3$511

Find flight deals from St. Louis to New Haven

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to New Haven (HVN). 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 March 6, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$339
(Kiwi.com)

One-way from

$265
(Kiwi.com)

Popular in

November

Cheapest in

April

Average price

$308
Provider with most accurate pricing for Lambert-St Louis-Tweed-New Haven flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Tweed-New Haven flights.
Search Deals
From Lambert-St Louis to Tweed-New Haven
Search Deals
One-way flight from Lambert-St Louis to Tweed-New Haven
Search Deals
Highest demand for flights based on searches. 10% potential increase in price ($36 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 1% potential price decrease ($7 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in March 2026
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to New Haven 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 March 6, 2026.
Use the filters below to find and compare flights from St. Louis to New Haven that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisNew Haven

STL - HVN

STLHVN

Lambert-St Louis

Tue 3/31

4:51 pm-2:46 pm

2 stops44h 55m

Tweed-New Haven

Tue 4/7

2:46 pm-11:25 pm

1 stop9h 39m

$339

St. LouisNew Haven

STL - HVN

STLHVN

Lambert-St Louis

Mon 3/16

8:10 pm-2:01 pm

1 stop16h 51m

Tweed-New Haven

Thu 3/19

8:44 pm-7:22 am

1 stop11h 38m

$420

St. LouisNew Haven

STL - HVN

STLHVN

Lambert-St Louis

Sun 4/19

4:59 pm-11:27 am

2 stops17h 28m

Tweed-New Haven

Sun 4/26

8:44 pm-11:19 pm

1 stop27h 35m

$429
Quickest round-trip

St. LouisNew Haven

STL - HVN

STLHVN

Lambert-St Louis

Sun 3/22

4:51 pm-11:27 am

2 stops17h 36m

Tweed-New Haven

Tue 3/31

2:46 pm-11:19 pm

1 stop9h 33m

$511
Cheapest one-way

St. LouisNew Haven

STL - HVN

STLHVN

Lambert-St Louis

Tue 4/21

4:59 pm-2:46 pm

2 stops44h 47m

$265
Quickest one-way

St. LouisNew Haven

STL - HVN

STLHVN

Lambert-St Louis

Fri 4/17

9:55 pm-2:46 pm

3 stops39h 51m

$288

Flights are sorted by cheapest round-trip flights first.

Deals found on 3/5

Sorted by cheapest first

Compare providers for flights from St. Louis to New Haven

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 St. Louis to New Haven in March.
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 St. Louis-New Haven flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-New Haven flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from St. Louis-New Haven flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-New Haven 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 St. Louis-New Haven 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 St. Louis to New Haven

Have a flexible travel schedule? Discover the best time to fly to New Haven from St. Louis 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 St. Louis to New Haven

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

Currently, April is the cheapest month in which you can book a flight from St. Louis to New Haven (average of $89). Flying from St. Louis to New Haven in May is currently the most expensive (average of $199). 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 St. Louis to New Haven. 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 St. Louis to New Haven that include hotel bookings?

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

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

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

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

    Yes. Cheapflights offers flight deals from St. Louis to New Haven 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 St. Louis to New Haven?

    Currently, April is the cheapest month in which you can book a flight from St. Louis to New Haven (average of $89). Flying from St. Louis to New Haven in May is currently the most expensive (average of $199). 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

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