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Cheap flights from St. Louis to Ithaca from $322

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Ithaca departing on 9/10. 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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Find the cheapest flights from St. Louis to Ithaca (STL-ITH)

Cheap round-trip flights

United Airlines Logo
3:23 pm - 11:43 pmSTL-ITH
7h 20m2 stops
United Airlines Logo
6:10 am - 2:27 pmITH-STL
9h 17m2 stops
$476United Airlines
Find Deal
Sat, Sep 27 - Sat, Oct 4
Delta Logo
4:10 pm - 12:05 amSTL-ITH
6h 55m1 stop
Delta Logo
2:05 pm - 9:50 pmITH-STL
8h 45m2 stops
$504Delta
Find Deal
Sat, Sep 27 - Sat, Oct 4
United Airlines Logo
11:10 am - 11:43 pmSTL-ITH
11h 33m2 stops
United Airlines Logo
7:53 pm - 9:52 amITH-STL
14h 59m2 stops
$532United Airlines
Find Deal
Thu, Oct 2 - Mon, Oct 6
Delta Logo
4:20 pm - 12:21 amSTL-ITH
7h 01m1 stop
Delta Logo
5:42 am - 12:31 pmITH-STL
7h 49m2 stops
$549Delta
Find Deal
Wed, Sep 10 - Sun, Sep 14
United Airlines Logo
11:10 am - 11:43 pmSTL-ITH
11h 33m2 stops
United Airlines Logo
7:53 pm - 10:49 amITH-STL
15h 56m2 stops
$574United Airlines
Find Deal
Thu, Oct 2 - Sun, Oct 5
United Airlines Logo
11:10 am - 11:43 pmSTL-ITH
11h 33m2 stops
United Airlines Logo
7:53 pm - 10:00 pmITH-STL
27h 07m3 stops
$578United Airlines
Find Deal
Thu, Oct 2 - Mon, Oct 6
Delta Logo
4:30 pm - 10:54 pmSTL-ITH
5h 24m1 stop
Delta Logo
5:40 am - 4:07 pmITH-STL
11h 27m2 stops
$589Delta
Find Deal
Sun, Nov 16 - Sat, Nov 22
United Airlines Logo
12:25 pm - 11:43 pmSTL-ITH
10h 18m2 stops
United Airlines Logo
6:10 am - 3:44 pmITH-STL
10h 34m2 stops
$604United Airlines
Find Deal
Fri, Oct 3 - Mon, Oct 6
United Airlines Logo
3:23 pm - 11:43 pmSTL-ITH
7h 20m2 stops
United Airlines Logo
6:10 am - 3:44 pmITH-STL
10h 34m3 stops
$636United Airlines
Find Deal
Sat, Sep 27 - Sat, Oct 4
United Airlines Logo
3:23 pm - 11:43 pmSTL-ITH
7h 20m2 stops
United Airlines Logo
7:53 pm - 10:49 amITH-STL
15h 56m2 stops
$643United Airlines
Find Deal
Fri, Oct 3 - Sun, Oct 5

Delta flights from St. Louis to Ithaca

Our best Delta deals on St. Louis to Ithaca flight tickets
Delta
Sep 27
STL4:10 pmLambert-St Louis
6h 55m
1 stop
ITH12:05 amIthaca Tompkins County
Oct 4
ITH2:05 pmIthaca Tompkins County
8h 45m
2 stops
STL9:50 pmLambert-St Louis
$504
Find similar
Delta
Sep 10
STL4:20 pmLambert-St Louis
7h 01m
1 stop
ITH12:21 amIthaca Tompkins County
Sep 14
ITH5:42 amIthaca Tompkins County
7h 49m
2 stops
STL12:31 pmLambert-St Louis
$549
Find similar
Delta
Nov 16
STL4:30 pmLambert-St Louis
5h 24m
1 stop
ITH10:54 pmIthaca Tompkins County
Nov 22
ITH5:40 amIthaca Tompkins County
11h 27m
2 stops
STL4:07 pmLambert-St Louis
$589
Find similar

United Airlines flights from St. Louis to Ithaca

Our best United Airlines deals on St. Louis to Ithaca flight tickets
United Airlines
Sep 27
STL3:23 pmLambert-St Louis
7h 20m
2 stops
ITH11:43 pmIthaca Tompkins County
Oct 4
ITH6:10 amIthaca Tompkins County
9h 17m
2 stops
STL2:27 pmLambert-St Louis
$476
Find similar
United Airlines
Oct 2
STL11:10 amLambert-St Louis
11h 33m
2 stops
ITH11:43 pmIthaca Tompkins County
Oct 6
ITH7:53 pmIthaca Tompkins County
14h 59m
2 stops
STL9:52 amLambert-St Louis
$532
Find similar
United Airlines
Oct 2
STL11:10 amLambert-St Louis
11h 33m
2 stops
ITH11:43 pmIthaca Tompkins County
Oct 5
ITH7:53 pmIthaca Tompkins County
15h 56m
2 stops
STL10:49 amLambert-St Louis
$574
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from St. Louis to Ithaca 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 August 28, 2025.
Use the filters below to find and compare flights from St. Louis to Ithaca that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

St. LouisIthaca

STL - ITH

STLITH

Lambert-St Louis

Sat 9/27

3:23 pm-11:43 pm

2 stops7h 20m

Ithaca Tompkins County

Sat 10/4

6:10 am-2:27 pm

2 stops9h 17m

$476

St. LouisIthaca

STL - ITH

STLITH

Lambert-St Louis

Sat 9/27

4:10 pm-12:05 am

1 stop6h 55m

Ithaca Tompkins County

Sat 10/4

2:05 pm-9:50 pm

2 stops8h 45m

$504

St. LouisIthaca

STL - ITH

STLITH

Lambert-St Louis

Thu 10/2

11:10 am-11:43 pm

2 stops11h 33m

Ithaca Tompkins County

Mon 10/6

7:53 pm-9:52 am

2 stops14h 59m

$532

St. LouisIthaca

STL - ITH

STLITH

Lambert-St Louis

Wed 9/10

4:20 pm-12:21 am

1 stop7h 01m

Ithaca Tompkins County

Sun 9/14

5:42 am-12:31 pm

2 stops7h 49m

$549

St. LouisIthaca

STL - ITH

STLITH

Lambert-St Louis

Thu 10/2

11:10 am-11:43 pm

2 stops11h 33m

Ithaca Tompkins County

Sun 10/5

7:53 pm-10:49 am

2 stops15h 56m

$574

St. LouisIthaca

STL - ITH

STLITH

Lambert-St Louis

Thu 10/2

11:10 am-11:43 pm

2 stops11h 33m

Ithaca Tompkins County

Mon 10/6

7:53 pm-10:00 pm

3 stops27h 07m

$578

St. LouisIthaca

STL - ITH

STLITH

Lambert-St Louis

Sun 11/16

4:30 pm-10:54 pm

1 stop5h 24m

Ithaca Tompkins County

Sat 11/22

5:40 am-4:07 pm

2 stops11h 27m

$589

St. LouisIthaca

STL - ITH

STLITH

Lambert-St Louis

Fri 10/3

12:25 pm-11:43 pm

2 stops10h 18m

Ithaca Tompkins County

Mon 10/6

6:10 am-3:44 pm

2 stops10h 34m

$604

St. LouisIthaca

STL - ITH

STLITH

Lambert-St Louis

Sat 9/27

3:23 pm-11:43 pm

2 stops7h 20m

Ithaca Tompkins County

Sat 10/4

6:10 am-3:44 pm

3 stops10h 34m

$636

St. LouisIthaca

STL - ITH

STLITH

Lambert-St Louis

Fri 10/3

3:23 pm-11:43 pm

2 stops7h 20m

Ithaca Tompkins County

Sun 10/5

7:53 pm-10:49 am

2 stops15h 56m

$643

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 resultsSorted by cheapest first
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See travel insights to Ithaca from

How to get the cheapest flight ticket from St. Louis to Ithaca

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 Ithaca?

On average, the least expensive day to fly to Ithaca from St. Louis is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $358. However, this price may fluctuate depending on the airline, the season, and holidays. Flights from St. Louis to Ithaca on a Sunday will generally be more expensive and average around $1,206. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Ithaca?

According to our data, the cheapest time of day to fly to Ithaca is in the morning. momondo users have found flights departing from St. Louis to Ithaca in the morning for as low as $398. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Ithaca are more costly at noon, with an average ticket price of $598. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Can stopping save me money on St. Louis to Ithaca flights?

You could potentially save up to 12% on your flight if you consider stops on a St. Louis to Ithaca flight.

When to book flights from St. Louis to Ithaca

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Ithaca according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Ithaca (STL to ITH) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Ithaca

Direct flights

None
There are no direct flights from St. Louis to Ithaca. There are no popular flight routes from St. Louis to Ithaca.
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  • How far is Lambert-St Louis to Ithaca Tompkins County by plane?

    A flight from Lambert-St Louis to Ithaca Tompkins County will travel around 764.6 mi. A reasonable flight in good conditions will take 4h 33m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Ithaca Tompkins County Airport?

    Prices for flights from Lambert-St Louis Airport to Ithaca Tompkins County Airport are refreshed on a daily basis.

  • How old do you have to be to fly from Lambert-St Louis Airport to Ithaca Tompkins County 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 Lambert-St Louis Airport to Ithaca Tompkins County Airport.

  • What documentation or ID do you need to fly to Ithaca Tompkins County Airport?

    The travel and health documents required for your trip to Ithaca Tompkins County 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 Ithaca Tompkins County Airport. We always recommend checking with your airline or a trusted third party such as IATA to get advice.

Traveling to a place near Ithaca?

Book flights to Ithaca if you plan to visit one of these locations
Cortland
Penn Yan

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Ithaca?

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from St. Louis to Ithaca for you.

Can I find flights from St. Louis to Ithaca with flexible booking policies on momondo?

momondo does allow users to show only those flights to Ithaca from St. Louis which offer a flexible booking policy as well as other useful filters and features.

How can momondo help me find flights from St. Louis to Ithaca?

momondo provides multiple filters to help you find the best flight to Ithaca from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Ithaca right now. Can momondo alert me if prices change?

Yes momondo offers price alerts on flights to Ithaca from St. Louis. 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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