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

View $239 flight on Mon, Oct 6, 2025Opens in a new window

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

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
Fri, Oct 31 - Tue, Nov 11
STL
St. Louis
ITH
Ithaca
$254 Roundtrip, found 2 days ago
$254
Roundtrip
found 2 days ago
Select Delta flight, departing Fri, Oct 31 from St. Louis to Ithaca, returning Tue, Nov 11, priced at $254 found 2 days ago
Delta
Mon, Sep 29 - Tue, Oct 21
STL
St. Louis
ITH
Ithaca
$259 Roundtrip, found 1 day ago
$259
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Sep 29 from St. Louis to Ithaca, returning Tue, Oct 21, priced at $259 found 1 day ago
Delta
Sat, Nov 1 - Tue, Nov 11
STL
St. Louis
ITH
Ithaca
$279 Roundtrip, found 2 days ago
$279
Roundtrip
found 2 days ago
Select Delta flight, departing Sat, Nov 1 from St. Louis to Ithaca, returning Tue, Nov 11, priced at $279 found 2 days ago
Delta
Mon, Sep 29 - Wed, Oct 8
STL
St. Louis
ITH
Ithaca
$284 Roundtrip, found 1 day ago
$284
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Sep 29 from St. Louis to Ithaca, returning Wed, Oct 8, priced at $284 found 1 day ago
Delta
Sat, Oct 25 - Tue, Nov 4
STL
St. Louis
ITH
Ithaca
$299 Roundtrip, found 4 days ago
$299
Roundtrip
found 4 days ago
Select Delta flight, departing Sat, Oct 25 from St. Louis to Ithaca, returning Tue, Nov 4, priced at $299 found 4 days ago
Delta
Mon, Sep 29 - Sat, Oct 4
STL
St. Louis
ITH
Ithaca
$304 Roundtrip, found 1 day ago
$304
Roundtrip
found 1 day ago
Select Delta flight, departing Mon, Sep 29 from St. Louis to Ithaca, returning Sat, Oct 4, priced at $304 found 1 day ago
Delta
Tue, Nov 4 - Thu, Nov 13
STL
St. Louis
ITH
Ithaca
$317 Roundtrip, found 2 days ago
$317
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 4 from St. Louis to Ithaca, returning Thu, Nov 13, priced at $317 found 2 days ago
Delta
Tue, Nov 4 - Sat, Nov 15
STL
St. Louis
ITH
Ithaca
$322 Roundtrip, found 2 days ago
$322
Roundtrip
found 2 days ago
Select Delta flight, departing Tue, Nov 4 from St. Louis to Ithaca, returning Sat, Nov 15, priced at $322 found 2 days ago
Delta
Fri, Oct 31 - Tue, Nov 4
STL
St. Louis
ITH
Ithaca
$324 Roundtrip, found 4 days ago
$324
Roundtrip
found 4 days ago
Select Delta flight, departing Fri, Oct 31 from St. Louis to Ithaca, returning Tue, Nov 4, priced at $324 found 4 days ago
United
Wed, Oct 1 - Sat, Oct 18
STL
St. Louis
ITH
Ithaca
$329 Roundtrip, found 1 day ago
$329
Roundtrip
found 1 day ago
Select United flight, departing Wed, Oct 1 from St. Louis to Ithaca, returning Sat, Oct 18, priced at $329 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 October. 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?
Secure a cheap one-way flight from $239 or cheap return flight from $254 from Lambert-St. Louis Intl. Airport (STL) to Tompkins Regional Airport (ITH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Tompkins Regional Airport (ITH)?
The cheapest month to fly from STL to ITH is October, when there's less demand. Off-peak season is typically when better flight deals are available between these airports.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Tompkins Regional Airport (ITH)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Choose your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest STL to ITH flight.
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.