Cheap Flights from New Haven (HVN) to St. Louis (STL)

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Find available prices by choosing your travel dates.
Flights from New Haven (HVN) to St. Louis (STL)
Origin airport
Tweed - New Haven Regional
Destination airport
Lambert-St. Louis Intl.
Distance
939 mi

New Haven to St. Louis Flights

The cheapest times to fly from New Haven to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from New Haven to St. Louis are during the month of . You can find some of the cheapest flights from New Haven to St. Louis with Expedia's search tool and vast selection of airlines.

The best time to book a flight from New Haven to St. Louis

Sunday is one of the best days to book for cheap flights from New Haven to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

How to find cheap round-trip tickets from New Haven to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from New Haven to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap New Haven to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

You could also save big by booking one of Expedia's vacation packages. Bundling together your New Haven to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

*Terms apply.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

Is it cheaper to buy a plane ticket from HVN to Lambert Field last minute?
Booking your flight from HVN to STL at the last minute could save you a nice sum if you’re lucky to find a real bargain. However, airfares don’t usually get cheaper as the departure date nears. If you choose to wait, flights could also be booked solid or the best seats taken (don’t get stuck in the middle!). If you’d rather not take any chances, book well ahead of when you want to leave. In fact, some of the best deals are available on Expedia up to 12 months in advance. If your preferred carrier hasn’t released its airfares yet, check back regularly as offers are constantly updated on Expedia.
What airports do you fly into for St. Louis from New Haven?
With Lambert-St. Louis Intl. Airport (STL), Spirit of St. Louis Airport (SUS) and St. Louis Downtown Airport (CPS) to choose from, traveling from New Haven to St. Louis is easy. The city’s major gateway, Lambert-St. Louis Intl. Airport (STL), is about 12 mi northwest of the center. As well as the price of tickets, consider factors like transportation options from the airport and the distance to your hotel before deciding where you’ll get off the plane. Get your St. Louis vacation off to an exciting start by exploring Busch Stadium and Gateway Arch.
Can I change the date of my flight from Tweed - New Haven Regional Airport to Lambert-St. Louis Intl. Airport (STL)?
We know life happens and plans change, so Expedia is here to help make things as simple as possible. To start, access your Tweed - New Haven Regional Airport (HVN) to STL itinerary through the Expedia Trips portal and look up the fare rules and restrictions about what sorts of changes are allowed. If you booked your plane ticket in the last 24 hours, some carriers allow you to cancel at no cost and book new flights. If you booked your fare more than 24 hours ago, get in touch with us through our Customer Service portal to run through your options.

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