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$304+ Cheap flights from Ithaca to St. Louis (ITH - STL)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/23. Fares are subject to change and may not be available on all flights or dates of travel.
ITH — STL
Jul 29 — Aug 51
Wed 7/29
Wed 8/5
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 June 29, 2026.

This United Airlines deal was found by Cheapflights users on 6/28. 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.
Wed 9/26:00 am
ITH
-
STL
1 stop4h 39m
United Airlines
Sat 9/58:00 am
STL
-
ITH
2 stops10h 03m
United Airlines
Deal found 6/28$394
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Fri 7/106:00 am
ITH
-
STL
2 stops10h 46m
United Airlines
Tue 7/149:20 am
STL
-
ITH
2 stops8h 42m
United Airlines
Deal found 6/26$429
This United Airlines deal was found by Cheapflights users on 6/24. 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 10/276:00 am
ITH
-
STL
2 stops7h 06m
United Airlines
Sat 10/311:24 pm
STL
-
ITH
1 stop4h 38m
United Airlines
Deal found 6/24$439
This United Airlines deal was found by Cheapflights users on 6/26. 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.
Wed 7/86:00 am
ITH
-
STL
1 stop5h 27m
United Airlines
Tue 7/149:20 am
STL
-
ITH
2 stops8h 42m
United Airlines
Deal found 6/26$454
This United Airlines deal was found by Cheapflights users on 6/28. 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.
Wed 7/86:00 am
ITH
-
STL
1 stop5h 27m
United Airlines
Mon 7/131:13 pm
STL
-
ITH
2 stops9h 31m
United Airlines
Deal found 6/28$535

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 June 29, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$394
(United Airlines)

One-way from

$304
(Delta)
Provider with most accurate pricing for Ithaca Tompkins County-Lambert-St Louis flight deals.
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Provider most trusted by Cheapflights users for Ithaca Tompkins County-Lambert-St Louis flights.
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From Ithaca Tompkins County to Lambert-St Louis
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One-way flight 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 June 29, 2026.
Use the filters below to find and compare flights from Ithaca to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Wed 9/2

6:00 am-9:39 am

1 stop4h 39m

Lambert-St Louis

Sat 9/5

8:00 am-7:03 pm

2 stops10h 03m

$394

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Tue 10/27

6:00 am-12:06 pm

2 stops7h 06m

Lambert-St Louis

Sat 10/31

1:08 pm-11:49 pm

2 stops9h 41m

$399

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Fri 7/10

6:00 am-3:46 pm

2 stops10h 46m

Lambert-St Louis

Tue 7/14

9:20 am-7:02 pm

2 stops8h 42m

$429

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Sat 7/11

6:00 am-3:46 pm

2 stops10h 46m

Lambert-St Louis

Wed 7/15

7:20 am-7:02 pm

2 stops10h 42m

$615
Cheapest one-way

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Thu 7/23

5:17 am-2:48 pm

2 stops10h 31m

$304
Quickest one-way

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Thu 7/23

6:00 am-10:27 am

1 stop5h 27m

$364

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Mon 7/27

6:00 am-12:11 pm

3 stops31h 11m

$468

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/25

Sorted by cheapest first
  • 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.

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 4h 39m. United Airlines provides one of the quickest options available for as low as $394. Airlines will cover a distance of 772 mi.

  • 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.

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
Fenton
Swansea
Fairview Heights
Eureka
Maryland Heights
Collinsville
Wentzville
Glencoe
Chesterfield
Alton
Farmington

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