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Cheap flights from New Haven to St. Louis from $284

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 10/22. 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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0 bags

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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
3:42 pm - 11:49 pm
HVN
-
STL
9h 07m
1 stop
Multiple Airlines Logo
6:31 pm - 1:34 pm
STL
-
HVN
42h 03m
2 stops
$472Multiple Airlines
Wed, Jun 10 - Tue, Jun 30
Multiple Airlines Logo
3:42 pm - 11:49 pm
HVN
-
STL
9h 07m
1 stop
Multiple Airlines Logo
4:17 pm - 2:57 pm
STL
-
HVN
21h 40m
1 stop
$531Multiple Airlines
Wed, Jun 10 - Tue, Jun 30
Multiple Airlines Logo
6:31 pm - 11:57 pm
HVN
-
STL
30h 26m
2 stops
Multiple Airlines Logo
4:17 pm - 2:57 pm
STL
-
HVN
21h 40m
1 stop
$592Multiple Airlines
Fri, Jun 5 - Tue, Jun 9

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 May 24, 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

Cheapest round-trip

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Wed 6/10

3:42 pm-11:49 pm

1 stop9h 07m

Lambert-St Louis

Tue 6/30

6:31 pm-1:34 pm

2 stops42h 03m

$472
Quickest round-trip

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Wed 6/10

3:42 pm-11:49 pm

1 stop9h 07m

Lambert-St Louis

Tue 6/30

4:17 pm-2:57 pm

1 stop21h 40m

$531

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Fri 6/5

6:31 pm-11:57 pm

2 stops30h 26m

Lambert-St Louis

Tue 6/9

4:17 pm-2:57 pm

1 stop21h 40m

$592
Cheapest one-way

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Thu 10/22

7:54 pm-1:17 am

2 stops30h 23m

$284

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Thu 10/22

7:54 pm-7:39 pm

1 stop24h 45m

$304
Quickest one-way

New HavenSt. Louis

HVN - STL

HVNSTL

Tweed-New Haven

Thu 10/22

7:54 pm-6:36 pm

3 stops23h 42m

$319

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 $359. 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 $482. 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 evening is the least expensive time of day to depart. momondo users have found prices as low as $375 when looking at flights departing in the evening. At noon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $392 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

24h 35m

Direct flights

None
The fastest flight from New Haven to St. Louis takes 24h 35m
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

Frequently asked questions about flying from New Haven to St. Louis

  • 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 24h 35m.

  • 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.

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
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Festus
Eureka
Clayton
Litchfield
Edwardsville
Shrewsbury
Grafton

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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