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$309+ Cheap flights from Ithaca to St. Louis (ITH - STL)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/26. Fares are subject to change and may not be available on all flights or dates of travel.
ITH — STL
Mar 14 — Mar 211
Sat 3/14
Sat 3/21
1 adult, Economy
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Cheap flight deals from Ithaca to St. Louis

Cheapest flights from Ithaca to St. Louis
Explore the most affordable flight options available from Ithaca to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on February 12, 2026.

This United Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:00 am
ITH
-
STL
1 stop5h 13m
United Airlines
Wed 3/48:17 am
STL
-
ITH
2 stops9h 10m
United Airlines
Deal found 2/11$309
This United Airlines deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/210:30 am
ITH
-
STL
2 stops9h 53m
United Airlines
Sat 5/97:45 am
STL
-
ITH
2 stops10h 04m
United Airlines
Deal found 2/11$430
This United Airlines deal was found by Cheapflights users on 2/9. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 3/27:45 pm
ITH
-
STL
2 stops26h 20m
United Airlines
Mon 3/97:40 am
STL
-
ITH
2 stops9h 42m
United Airlines
Deal found 2/9$447
This United Airlines deal was found by Cheapflights users on 2/8. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/106:00 am
ITH
-
STL
2 stops9h 30m
United Airlines
Sat 2/141:11 pm
STL
-
ITH
2 stops9h 31m
United Airlines
Deal found 2/8$449
This Delta deal was found by Cheapflights users on 2/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/265:29 am
ITH
-
STL
2 stops10h 18m
Delta
Wed 3/46:35 am
STL
-
ITH
2 stops6h 48m
Delta
Deal found 2/11$484

Find flight deals from Ithaca to St. Louis

Discover tips and strategies to find the most affordable flight options for your journey from Ithaca (ITH) to St. Louis (STL). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated February 12, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$344
(United Airlines)
Provider with most accurate pricing for Ithaca Tompkins County-Lambert-St Louis flight deals.
Search Deals
Provider most trusted by Cheapflights users for Ithaca Tompkins County-Lambert-St Louis flights.
Search Deals
From Ithaca Tompkins County to Lambert-St Louis
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Cheapflights Fare Finder

 
Customize your flight search to find flights from Ithaca 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, Cheapflights users made 2,558,603 searches. Data last updated February 12, 2026.
Use the filters below to find and compare flights from Ithaca to St. Louis that are best for you.

Fly from

Ithaca

Fly to

St. Louis

Route

Depart

Return

Price

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Thu 2/26

6:00 am-10:13 am

1 stop5h 13m

Lambert-St Louis

Wed 3/4

8:17 am-6:27 pm

2 stops9h 10m

$309

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Sat 5/2

10:30 am-7:23 pm

2 stops9h 53m

Lambert-St Louis

Sat 5/9

7:45 am-6:49 pm

2 stops10h 04m

$430

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Mon 3/2

7:45 pm-8:23 pm

1 stop25h 38m

Lambert-St Louis

Mon 3/9

7:40 am-6:22 pm

2 stops9h 42m

$476

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Thu 2/26

5:29 am-2:47 pm

2 stops10h 18m

Lambert-St Louis

Wed 3/4

6:35 am-2:23 pm

2 stops6h 48m

$484

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Thu 3/5

6:00 am-2:42 pm

2 stops9h 42m

Lambert-St Louis

Mon 3/9

7:40 am-6:22 pm

2 stops9h 42m

$614

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Thu 3/12

10:30 am-9:07 pm

2 stops11h 37m

Lambert-St Louis

Mon 3/16

7:40 am-11:42 pm

2 stops15h 02m

$624

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Fri 3/13

1:33 pm-8:42 pm

2 stops8h 09m

Lambert-St Louis

Mon 3/16

1:39 pm-11:59 pm

2 stops9h 20m

$628

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Wed 2/18

5:29 am-2:47 pm

2 stops10h 18m

$427

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Wed 2/18

7:45 pm-10:13 am

1 stop15h 28m

$705

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/11

  • Most accurate provider: When it comes to deals on Ithaca-St. Louis flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Ithaca-St. Louis flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Ithaca-St. Louis flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Ithaca-St. Louis flights, Cheapflights users trust FlightHub the most. FlightHub 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 Ithaca-St. Louis 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 Ithaca to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Ithaca 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 Ithaca to St. Louis

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

Currently, December is the cheapest month in which you can book a flight from Ithaca to St. Louis (average of $203). Flying from Ithaca to St. Louis in February is currently the most expensive (average of $259). 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

Find useful and relevant information for your journey from Ithaca to St. Louis. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Ithaca to St. Louis?

    A quick flight from Ithaca to St. Louis can take about 5h 13m. United Airlines provides one of the quickest options available for as low as $309. Airlines will cover a distance of 772 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • Can I find deals for flights from Ithaca to St. Louis that include hotel bookings?

    Yes. In addition to deals on Ithaca to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Ithaca to St. Louis?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Ithaca to St. Louis.

  • Can I find deals for business class flights from Ithaca to St. Louis?

    Yes. Cheapflights offers flight deals from Ithaca to St. Louis 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 Ithaca to St. Louis?

    Currently, December is the cheapest month in which you can book a flight from Ithaca to St. Louis (average of $203). Flying from Ithaca to St. Louis in February is currently the most expensive (average of $259). 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.

See more FAQs

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Edwardsville
O'Fallon
Swansea
Fairview Heights
Maryland Heights
Collinsville
Eureka
Glencoe
Chesterfield
Alton
Farmington
Festus

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Alternative routes for Ithaca to St. Louis

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