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Cheap flights from Rochester to St. Louis from $192

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Rochester to St. Louis departing on 7/21. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
1 adult, Economy, 0 bags

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from Rochester to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
American Airlines Logo
7:31 pm - 11:32 pm
ROC
-
STL
5h 01m
1 stop
American Airlines Logo
5:48 pm - 11:41 pm
STL
-
ROC
4h 53m
1 stop
$303American Airlines
Wed, Jul 22 - Sat, Jul 25
Southwest Logo
3:20 pm - 9:40 pm
ROC
-
STL
7h 20m
2 stops
Southwest Logo
6:30 am - 11:15 am
STL
-
ROC
3h 45m
1 stop
$308Southwest
Wed, Sep 9 - Tue, Sep 15
Southwest Logo
3:20 pm - 10:10 pm
ROC
-
STL
7h 50m
2 stops
Southwest Logo
12:50 pm - 9:15 pm
STL
-
ROC
7h 25m
2 stops
$313Southwest
Wed, Sep 9 - Tue, Sep 15
United Airlines Logo
7:10 pm - 11:36 pm
ROC
-
STL
5h 26m
1 stop
United Airlines Logo
6:01 am - 11:40 am
STL
-
ROC
4h 39m
1 stop
$316United Airlines
Tue, Jul 21 - Sat, Jul 25
Delta Logo
5:48 pm - 8:42 pm
ROC
-
STL
3h 54m
1 stop
Delta Logo
6:25 pm - 10:52 pm
STL
-
ROC
3h 27m
1 stop
$322Delta
Wed, Aug 26 - Thu, Aug 27
Southwest Logo
3:15 pm - 8:40 pm
ROC
-
STL
6h 25m
1 stop
Southwest Logo
12:55 pm - 10:05 pm
STL
-
ROC
8h 10m
2 stops
$327Southwest
Sat, Sep 12 - Thu, Sep 17
Delta Logo
6:16 am - 9:37 am
ROC
-
STL
4h 21m
1 stop
Delta Logo
6:25 pm - 10:52 pm
STL
-
ROC
3h 27m
1 stop
$341Delta
Thu, Aug 27 - Thu, Aug 27
American Airlines Logo
7:31 pm - 11:32 pm
ROC
-
STL
5h 01m
1 stop
American Airlines Logo
6:00 am - 11:39 am
STL
-
ROC
4h 39m
1 stop
$345American Airlines
Wed, Jul 22 - Sun, Jul 26
United Airlines Logo
6:05 am - 12:13 pm
ROC
-
STL
7h 08m
2 stops
United Airlines Logo
3:15 pm - 9:17 pm
STL
-
ROC
5h 02m
1 stop
$346United Airlines
Thu, Oct 22 - Mon, Oct 26
American Airlines Logo
7:31 pm - 11:32 pm
ROC
-
STL
5h 01m
1 stop
American Airlines Logo
5:48 pm - 11:41 pm
STL
-
ROC
4h 53m
1 stop
$355American Airlines
Thu, Jul 16 - Sat, Jul 25

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United Airlines flights from Rochester to St. Louis

Our best United Airlines deals on Rochester to St. Louis flight tickets
United Airlines
Jul 21
ROC7:10 pmGreater Rochester Intl
5h 26m
1 stop
STL11:36 pmLambert-St Louis
Jul 25
STL6:01 amLambert-St Louis
4h 39m
1 stop
ROC11:40 amGreater Rochester Intl
$316
United Airlines
Oct 22
ROC6:05 amGreater Rochester Intl
7h 08m
2 stops
STL12:13 pmLambert-St Louis
Oct 26
STL3:15 pmLambert-St Louis
5h 02m
1 stop
ROC9:17 pmGreater Rochester Intl
$346
United Airlines
Jul 20
ROC7:10 pmGreater Rochester Intl
5h 34m
1 stop
STL11:44 pmLambert-St Louis
Jul 25
STL6:01 amLambert-St Louis
4h 39m
1 stop
ROC11:40 amGreater Rochester Intl
$368

Southwest flights from Rochester to St. Louis

Our best Southwest deals on Rochester to St. Louis flight tickets
Southwest
Sep 9
ROC3:20 pmGreater Rochester Intl
7h 20m
2 stops
STL9:40 pmLambert-St Louis
Sep 15
STL6:30 amLambert-St Louis
3h 45m
1 stop
ROC11:15 amGreater Rochester Intl
$308
Southwest
Sep 9
ROC3:20 pmGreater Rochester Intl
7h 50m
2 stops
STL10:10 pmLambert-St Louis
Sep 15
STL12:50 pmLambert-St Louis
7h 25m
2 stops
ROC9:15 pmGreater Rochester Intl
$313
Southwest
Sep 12
ROC3:15 pmGreater Rochester Intl
6h 25m
1 stop
STL8:40 pmLambert-St Louis
Sep 17
STL4:15 pmLambert-St Louis
4h 50m
1 stop
ROC10:05 pmGreater Rochester Intl
$322

momondo Fare Finder

 
Customize your flight search to find flights from Rochester 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 June 23, 2026.
Use the filters below to find and compare flights from Rochester to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

RochesterSt. Louis

ROC - STL

ROCSTL

Greater Rochester Intl

Wed 7/22

7:31 pm-11:32 pm

1 stop5h 01m

Lambert-St Louis

Sat 7/25

5:48 pm-11:41 pm

1 stop4h 53m

$303

RochesterSt. Louis

ROC - STL

ROCSTL

Greater Rochester Intl

Wed 9/9

3:20 pm-9:40 pm

2 stops7h 20m

Lambert-St Louis

Tue 9/15

6:30 am-11:15 am

1 stop3h 45m

$308

RochesterSt. Louis

ROC - STL

ROCSTL

Greater Rochester Intl

Wed 9/9

3:20 pm-10:10 pm

2 stops7h 50m

Lambert-St Louis

Tue 9/15

12:50 pm-9:15 pm

2 stops7h 25m

$313

RochesterSt. Louis

ROC - STL

ROCSTL

Greater Rochester Intl

Tue 7/21

7:10 pm-11:36 pm

1 stop5h 26m

Lambert-St Louis

Sat 7/25

6:01 am-11:40 am

1 stop4h 39m

$316
Quickest round-trip

RochesterSt. Louis

ROC - STL

ROCSTL

Greater Rochester Intl

Wed 8/26

5:48 pm-8:42 pm

1 stop3h 54m

Lambert-St Louis

Thu 8/27

6:25 pm-10:52 pm

1 stop3h 27m

$322

RochesterSt. Louis

ROC - STL

ROCSTL

Greater Rochester Intl

Sat 9/12

3:15 pm-8:40 pm

1 stop6h 25m

Lambert-St Louis

Thu 9/17

12:55 pm-10:05 pm

2 stops8h 10m

$327

RochesterSt. Louis

ROC - STL

ROCSTL

Greater Rochester Intl

Thu 8/27

6:16 am-9:37 am

1 stop4h 21m

Lambert-St Louis

Thu 8/27

6:25 pm-10:52 pm

1 stop3h 27m

$341

RochesterSt. Louis

ROC - STL

ROCSTL

Greater Rochester Intl

Wed 7/22

7:31 pm-11:32 pm

1 stop5h 01m

Lambert-St Louis

Sun 7/26

6:00 am-11:39 am

1 stop4h 39m

$345

RochesterSt. Louis

ROC - STL

ROCSTL

Greater Rochester Intl

Thu 10/22

6:05 am-12:13 pm

2 stops7h 08m

Lambert-St Louis

Mon 10/26

3:15 pm-9:17 pm

1 stop5h 02m

$346

RochesterSt. Louis

ROC - STL

ROCSTL

Greater Rochester Intl

Thu 7/16

7:31 pm-11:32 pm

1 stop5h 01m

Lambert-St Louis

Sat 7/25

5:48 pm-11:41 pm

1 stop4h 53m

$355

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to St. Louis from

How to get the cheapest flight ticket from Rochester 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 is the typical price of a round-trip flight between Rochester and St. Louis?

What is the cheapest month to fly to St. Louis?

In general, September is the cheapest month to fly from Rochester to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $291. The month of October is another great option to travel to St. Louis, with average flight prices from Rochester averaging around $346.

How have Rochester to St. Louis flight prices changed over time?

As of June 2026, prices for Rochester to St. Louis flights are approximately 30% more expensive when compared to flights at the same time last year.

When to book flights from Rochester to St. Louis

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

Cheap Rochester to St. Louis (ROC to STL) flight deals and tips

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

Fastest flight time

4h 15m

Direct flights

None
The fastest flight from Rochester to St. Louis takes 4h 15m
There are no direct flights from Rochester to St. Louis. There are no popular flight routes from Rochester to St. Louis.
Search flight deals

Frequently asked questions about flying from Rochester to St. Louis

  • How far is Greater Rochester Intl to Lambert-St Louis by plane?

    The straight-line distance from Greater Rochester Intl to Lambert-St Louis is 726.3 mi. By plane, this route typically takes 4h 15m.

  • When did momondo last update prices for flights from Greater Rochester Intl Airport to Lambert-St Louis Airport?

    Prices for flights from Greater Rochester Intl Airport to Lambert-St Louis Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Greater Rochester Intl Airport to Lambert-St Louis Airport?

  • How old do you have to be to fly from Greater Rochester Intl Airport to Lambert-St Louis Airport?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Greater Rochester Intl 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.

  • What is the most popular airline from Rochester to St. Louis?

Best airlines flying from Rochester to St. Louis

Compare and see reviews for airlines that fly from Rochester to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
SouthwestPriceFrom $228Free CancellationRating
7.9
4,242 reviews
Search Southwest flights
American AirlinesPriceFrom $236Free CancellationRating
7.1
11,745 reviews
Search American Airlines flights
DeltaPriceFrom $251Free CancellationRating
7.8
8,424 reviews
Search Delta flights
United AirlinesPriceFrom $271Free CancellationRating
7.4
9,875 reviews
Search United Airlines flights

Traveling to a place near St. Louis?

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

Why use momondo?

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

Finding the right flight to St. Louis from Rochester 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 Rochester to St. Louis with flexible booking policies on momondo?

Yes. All flights to St. Louis from Rochester on momondo can be compared and filtered by various policies on offer, including flexible booking.

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

Once you have performed a search for Rochester to St. Louis flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

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

If you are not ready to book a flight from Rochester to St. Louis now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to St. Louis and let you know when they change.

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