$239 Cheap Flights from St. Louis (STL) to Ithaca (ITH)

View $239 flight on Thu, Dec 4, 2025Opens in a new window

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Ithaca, NY (ITH-Tompkins Regional)

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Cheap Flights from St. Louis to Ithaca (STL-ITH)

Prices were available within the past 7 days and start at $239 for one-way flights and $254 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Sat, Sep 13 - Tue, Sep 30
STL
St. Louis
ITH
Ithaca
$254 Roundtrip, found 1 day ago
$254
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Sep 13 from St. Louis to Ithaca, returning Tue, Sep 30, priced at $254 found 1 day ago
Delta
Mon, Aug 11 - Tue, Aug 19
STL
St. Louis
ITH
Ithaca
$259 Roundtrip, found 17 hours ago
$259
Roundtrip
found 17 hours ago
Select Delta flight, departing Mon, Aug 11 from St. Louis to Ithaca, returning Tue, Aug 19, priced at $259 found 17 hours ago
Delta
Fri, Sep 12 - Tue, Sep 30
STL
St. Louis
ITH
Ithaca
$279 Roundtrip, found 1 day ago
$279
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Sep 12 from St. Louis to Ithaca, returning Tue, Sep 30, priced at $279 found 1 day ago
Delta
Wed, Aug 6 - Tue, Aug 19
STL
St. Louis
ITH
Ithaca
$284 Roundtrip, found 1 day ago
$284
Roundtrip
found 1 day ago
Select Delta flight, departing Wed, Aug 6 from St. Louis to Ithaca, returning Tue, Aug 19, priced at $284 found 1 day ago
Delta
Thu, Dec 4 - Mon, Dec 8
STL
St. Louis
ITH
Ithaca
$288 Roundtrip, just found
$288
Roundtrip
just found
Select Delta flight, departing Thu, Dec 4 from St. Louis to Ithaca, returning Mon, Dec 8, priced at $288 just found
Delta
Tue, Jul 22 - Wed, Aug 13
STL
St. Louis
ITH
Ithaca
$289 Roundtrip, found 22 hours ago
$289
Roundtrip
found 22 hours ago
Select Delta flight, departing Tue, Jul 22 from St. Louis to Ithaca, returning Wed, Aug 13, priced at $289 found 22 hours ago
Delta
Tue, Jul 15 - Wed, Jul 23
STL
St. Louis
ITH
Ithaca
$294 Roundtrip, found 1 day ago
$294
Roundtrip
found 1 day ago
Select Delta flight, departing Tue, Jul 15 from St. Louis to Ithaca, returning Wed, Jul 23, priced at $294 found 1 day ago
Delta
Sat, Sep 13 - Sat, Sep 27
STL
St. Louis
ITH
Ithaca
$299 Roundtrip, found 1 day ago
$299
Roundtrip
found 1 day ago
Select Delta flight, departing Sat, Sep 13 from St. Louis to Ithaca, returning Sat, Sep 27, priced at $299 found 1 day ago
Delta
Fri, Sep 12 - Thu, Oct 2
STL
St. Louis
ITH
Ithaca
$304 Roundtrip, found 1 day ago
$304
Roundtrip
found 1 day ago
Select Delta flight, departing Fri, Sep 12 from St. Louis to Ithaca, returning Thu, Oct 2, priced at $304 found 1 day ago
United
Fri, Aug 8 - Sun, Aug 24
STL
St. Louis
ITH
Ithaca
$453 Roundtrip, found 1 day ago
$453
Roundtrip
found 1 day ago
Select United flight, departing Fri, Aug 8 from St. Louis to Ithaca, returning Sun, Aug 24, priced at $453 found 1 day ago
Flights from St. Louis (STL) to Ithaca (ITH)
Origin airport
Lambert-St. Louis Intl.
Destination airport
Tompkins Regional
Airlines serving
Delta, United
Roundtrip price
$254
Distance
773 mi

St. Louis to Ithaca Flights

The cheapest times to fly from St. Louis to Ithaca

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 St. Louis to Ithaca are during the month of September. You can find some of the cheapest flights from St. Louis to Ithaca with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Ithaca

Sunday is one of the best days to book for cheap flights from St. Louis to Ithaca: 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 St. Louis to Ithaca

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 St. Louis to Ithaca in 2025. You can also book with separate airlines for your outbound and return journeys, from $239 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 St. Louis to Ithaca 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 St. Louis to Ithaca 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

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Tompkins Regional Airport (ITH) cost?
Discover the latest flight deals from STL to ITH by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from STL to ITH?
The cheapest flights from STL to ITH are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from STL to ITH?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll take you from STL to ITH. Sort your results by "Price (lowest to highest)" to snap up a great deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Tompkins Regional Airport (ITH)?
There aren't any daily nonstop flights departing from Lambert-St. Louis Intl. Airport (STL) to Tompkins Regional Airport (ITH). But you can book flights with layovers. Filter your search on Expedia to include one or two stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from STL to ITH?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Tompkins Regional Airport (ITH)?
To avoid potential delays on the Lambert-St. Louis Intl. Airport (STL) to Tompkins Regional Airport (ITH) route, travel before 3 PM. Departures after this hour have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Tompkins Regional Airport (ITH) last-minute?
Last-minute fares from STL to ITH are generally more expensive. To lock in the lowest prices, start looking for flights as early as possible. That said, if you're flexible with your travel plans, you may land a cheap ticket just before your departure.
Is it cheaper to book a STL to ITH flight and hotel package?
Compared with arranging hotels and flights separately, booking a STL to ITH flight and hotel package with Expedia could result in significant savings. Better yet, having everything in one convenient place will take the hassle out of travel planning. Simply pick your flights and select from our extensive range of stays, then personalize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Tompkins Regional Airport (ITH)?
If you booked your STL to ITH flight in the last 24 hours, you may be able to cancel or modify it without fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.

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*Available to One Key members.