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Cheap flights from Ithaca to St. Louis from $399

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Ithaca to St. Louis departing on 6/17. 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 Ithaca to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
United Airlines Logo
6:00 am - 12:11 pm
ITH
-
STL
7h 11m
2 stops
United Airlines Logo
1:13 pm - 11:44 pm
STL
-
ITH
9h 31m
2 stops
$399United Airlines
Wed, Jun 17 - Tue, Jun 30
Delta Logo
5:28 am - 12:34 pm
ITH
-
STL
8h 06m
2 stops
Delta Logo
6:10 pm - 12:36 pm
STL
-
ITH
17h 26m
2 stops
$426Delta
Tue, Jun 16 - Tue, Jun 30
Delta Logo
5:28 am - 12:34 pm
ITH
-
STL
8h 06m
2 stops
Delta Logo
10:16 am - 12:36 pm
STL
-
ITH
25h 20m
2 stops
$465Delta
Tue, Jun 16 - Sat, Jun 27
Delta Logo
5:28 am - 12:34 pm
ITH
-
STL
8h 06m
2 stops
Delta Logo
10:16 am - 12:36 pm
STL
-
ITH
25h 20m
2 stops
$483Delta
Wed, Jun 17 - Sat, Jun 27
Delta Logo
1:16 pm - 10:18 pm
ITH
-
STL
10h 02m
2 stops
Delta Logo
8:00 am - 12:23 am
STL
-
ITH
15h 23m
2 stops
$490Delta
Tue, Jun 16 - Mon, Jun 29
Delta Logo
5:28 am - 12:34 pm
ITH
-
STL
8h 06m
2 stops
Delta Logo
10:51 am - 12:23 am
STL
-
ITH
12h 32m
2 stops
$500Delta
Tue, Jun 16 - Sun, Jun 28
Delta Logo
5:28 am - 12:34 pm
ITH
-
STL
8h 06m
2 stops
Delta Logo
6:30 am - 12:23 am
STL
-
ITH
16h 53m
2 stops
$508Delta
Wed, Jun 17 - Mon, Jun 29
Delta Logo
1:16 pm - 10:18 pm
ITH
-
STL
10h 02m
2 stops
Delta Logo
7:08 am - 12:23 am
STL
-
ITH
16h 15m
2 stops
$516Delta
Tue, Jun 16 - Fri, Jun 26
Delta Logo
5:28 am - 12:34 pm
ITH
-
STL
8h 06m
2 stops
Delta Logo
10:51 am - 12:23 am
STL
-
ITH
12h 32m
2 stops
$518Delta
Wed, Jun 17 - Sun, Jun 28
United Airlines Logo
6:00 am - 10:27 am
ITH
-
STL
5h 27m
1 stop
United Airlines Logo
1:13 pm - 11:44 pm
STL
-
ITH
9h 31m
2 stops
$527United Airlines
Wed, Jun 17 - Tue, Jun 30

United Airlines flights from Ithaca to St. Louis

Our best United Airlines deals on Ithaca to St. Louis flight tickets
United Airlines
Jun 17
ITH6:00 amIthaca Tompkins County
7h 11m
2 stops
STL12:11 pmLambert-St Louis
Jun 30
STL1:13 pmLambert-St Louis
9h 31m
2 stops
ITH11:44 pmIthaca Tompkins County
$399
United Airlines
Jun 17
ITH6:00 amIthaca Tompkins County
5h 27m
1 stop
STL10:27 amLambert-St Louis
Jun 30
STL1:13 pmLambert-St Louis
9h 31m
2 stops
ITH11:44 pmIthaca Tompkins County
$527
United Airlines
Jun 17
ITH6:00 amIthaca Tompkins County
7h 11m
2 stops
STL12:11 pmLambert-St Louis
Jun 24
STL5:29 pmLambert-St Louis
29h 15m
2 stops
ITH11:44 pmIthaca Tompkins County
$537

Delta flights from Ithaca to St. Louis

Our best Delta deals on Ithaca to St. Louis flight tickets
Delta
Jun 16
ITH5:28 amIthaca Tompkins County
8h 06m
2 stops
STL12:34 pmLambert-St Louis
Jun 30
STL6:10 pmLambert-St Louis
17h 26m
2 stops
ITH12:36 pmIthaca Tompkins County
$426
Delta
Jun 16
ITH5:28 amIthaca Tompkins County
8h 06m
2 stops
STL12:34 pmLambert-St Louis
Jun 27
STL10:16 amLambert-St Louis
25h 20m
2 stops
ITH12:36 pmIthaca Tompkins County
$465
Delta
Jun 17
ITH5:28 amIthaca Tompkins County
8h 06m
2 stops
STL12:34 pmLambert-St Louis
Jun 27
STL10:16 amLambert-St Louis
25h 20m
2 stops
ITH12:36 pmIthaca Tompkins County
$483

momondo 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, momondo users made 832,500 searches. Data last updated May 20, 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

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Wed 6/17

6:00 am-12:11 pm

2 stops7h 11m

Lambert-St Louis

Tue 6/30

1:13 pm-11:44 pm

2 stops9h 31m

$399

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Tue 6/16

5:28 am-12:34 pm

2 stops8h 06m

Lambert-St Louis

Tue 6/30

6:10 pm-12:36 pm

2 stops17h 26m

$426

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Tue 6/16

5:28 am-12:34 pm

2 stops8h 06m

Lambert-St Louis

Sat 6/27

10:16 am-12:36 pm

2 stops25h 20m

$465

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Wed 6/17

5:28 am-12:34 pm

2 stops8h 06m

Lambert-St Louis

Sat 6/27

10:16 am-12:36 pm

2 stops25h 20m

$483

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Tue 6/16

1:16 pm-10:18 pm

2 stops10h 02m

Lambert-St Louis

Mon 6/29

8:00 am-12:23 am

2 stops15h 23m

$490

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Tue 6/16

5:28 am-12:34 pm

2 stops8h 06m

Lambert-St Louis

Sun 6/28

10:51 am-12:23 am

2 stops12h 32m

$500

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Wed 6/17

5:28 am-12:34 pm

2 stops8h 06m

Lambert-St Louis

Mon 6/29

6:30 am-12:23 am

2 stops16h 53m

$508

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Tue 6/16

1:16 pm-10:18 pm

2 stops10h 02m

Lambert-St Louis

Fri 6/26

7:08 am-12:23 am

2 stops16h 15m

$516

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Wed 6/17

5:28 am-12:34 pm

2 stops8h 06m

Lambert-St Louis

Sun 6/28

10:51 am-12:23 am

2 stops12h 32m

$518
Quickest round-trip

IthacaSt. Louis

ITH - STL

ITHSTL

Ithaca Tompkins County

Wed 6/17

6:00 am-10:27 am

1 stop5h 27m

Lambert-St Louis

Tue 6/30

1:13 pm-11:44 pm

2 stops9h 31m

$527

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

See travel insights to St. Louis from

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

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 airlines fly to St. Louis?

Delta, American Airlines and United Airlines are the top three most popular airlines that fly to St. Louis from Ithaca according to our data. Delta is the first choice among our users, with 50% of people opting to fly with this airline when traveling to St. Louis. Keep in mind that there are 4 different airlines that fly to St. Louis on a routine basis, so you have a few additional options to choose from.

When to book flights from Ithaca to St. Louis

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

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

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

Fastest flight time

5h 18m

Direct flights

None
The fastest flight from Ithaca to St. Louis takes 5h 18m
There are no direct flights from Ithaca to St. Louis. There are no popular flight routes from Ithaca to St. Louis.
Search flight deals

Frequently asked questions about flying from Ithaca to St. Louis

  • How far is Ithaca Tompkins County to Lambert-St Louis by plane?

    The distance between Ithaca Tompkins County and Lambert-St Louis is about 764.6 mi. 5h 18m is a normal flight duration for this route.

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

    Prices for flights from Ithaca Tompkins County Airport to Lambert-St Louis Airport were last updated today.

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

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Ithaca Tompkins County Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

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

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
Florissant
O'Fallon
St. Peters
Collinsville
Alton
Wentzville
Fenton
Farmington
Festus
Eureka
Clayton
Litchfield
Edwardsville
Shrewsbury
Grafton

Why use momondo?

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

Finding the right flight to St. Louis from Ithaca is quick and easy when you have a range of options in front of you, from reputable agents and recognisable airlines. Options that can then be filtered down to find the best fit. That is what momondo does. We make finding flights to St. Louis quick and easy, saving you time and money.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Ithaca with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Ithaca to St. Louis.

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

Yes. momondo can track prices for Ithaca to St. Louis flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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