In terms of precipitation, rainfall in New Haven ranges from 3.1 - 4.5 inches per month. May is typically the wettest month, when rainfall can reach 4.5 in. February is typically the driest time to visit New Haven when rainfall is around 3.1 in.

If weather is an important factor for your trip to New Haven, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 77.0 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 30.2 F).

What is the cheapest time of day to fly from STL to HVN?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from St. Louis to New Haven as you normally would.

Most accurate provider : When it comes to deals on St. Louis-New Haven flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-New Haven flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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.

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.

$242+ Flights from St. Louis to New Haven

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Cheap flight deals from St. Louis to New Haven

One-way flights from St. Louis to New Haven
Search for one-way flight options from St. Louis to New Haven. Find affordable one-way fares based on user searches. Data last updated December 23, 2025.

Mon 12/299:07 amSTL - HVN

1 stop11h 42mMultiple Airlines

Deal found 12/22

$242

Find flight deals from St. Louis to New Haven

Most accurate provider	eDreams 3 stars
Most trusted provider	eDreams 3 stars
Popular in	November
Cheapest in	April
Average price	$357

Provider with most accurate pricing for Lambert-St Louis-Tweed-New Haven flight deals.

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Provider most trusted by Cheapflights users for Lambert-St Louis-Tweed-New Haven flights.

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Highest demand for flights based on searches. 13% potential increase in price ($48 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 December 2025

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Cheapflights Fare Finder

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

St. LouisNew Haven

STL - HVN

STLHVN

Lambert-St Louis

Mon 12/29

9:07 am-9:49 pm

1 stop11h 42m

$242

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/22

Compare providers for flights from St. Louis to New Haven

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 December.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy2 stars	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*1 star
eDreams	Price Accuracy3 stars	Trust 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 eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-New Haven flight deals on Cheapflights vs. eDreams >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 eDreams the most. eDreams 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

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.

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$242+ 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 12/29. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from St. Louis to New Haven with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheap flight deals from St. Louis to New Haven

One-way flights from St. Louis to New HavenSearch for one-way flight options from St. Louis to New Haven. Find affordable one-way fares based on user searches. Data last updated December 23, 2025.

Search for one-way flight options from St. Louis to New Haven. Find affordable one-way fares based on user searches. Data last updated December 23, 2025.

Find flight deals from St. Louis to New Haven

Most accurate provider

Most trusted provider

Popular in

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Average price

Cheapflights Fare Finder

Use the filters below to find and compare flights from St. Louis to New Haven that are best for you.

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 December.

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.

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?

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?

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

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

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

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One-way flights from St. Louis to New Haven
Search for one-way flight options from St. Louis to New Haven. Find affordable one-way fares based on user searches. Data last updated December 23, 2025.