What are the cheapest airlines flying from Rochester to St. Louis round-trip?

Flying on American Airlines is currently your cheapest option to St. Louis, with prices starting at $237. Additional round-trip tickets that might be worth considering are offered by Delta and Southwest, with the lowest prices starting at $297 and $312, respectively. Users have found that American Airlines is 40% cheaper than the other options available to this destination.

What is the cheapest day to fly from Rochester to St. Louis?

Travelers seeking maximum savings on their Rochester to St. Louis flight should consider departing on Saturday afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

In terms of precipitation, rainfall in St. Louis ranges from 2.2 - 4.7 inches per month. May is typically the wettest month, when rainfall can reach 4.7 in. February is typically the driest time to visit St. Louis when rainfall is around 2.2 in.

If weather is an important factor for your trip to St. Louis, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 80.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 32.0 F).

What are the most popular airlines that fly from Rochester to St. Louis?

American Airlines, Delta and United Airlines are the most popular airlines when flying from Rochester to St. Louis.

What is the cheapest day to fly round-trip from Rochester to St. Louis?

Friday is generally a great day to depart. Flying on this day could help you save up to 28%.

How far in advance should I book a flight from Rochester to St. Louis?

Find a great deal and save up to 94% by booking at least 41 days prior to your desired departure date, rather than waiting until the week of travel. According to our data, there are a number of flights available from Rochester to St. Louis within the next two weeks, with the cheapest ticket starting at $366.

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

Due to multiple factors, expect to potentially pay more when booking in November. For low rates, March can be a great choice for travel to St. Louis. Flights to St. Louis from Rochester in March are about $397 on average during March, but can be found for as low as $286.

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

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

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

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

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

Yes. Cheapflights offers flight deals from Rochester 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.

$237+ Flights from Rochester to St. Louis

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Cheapflights Tip: The best prices from Rochester Greater Rochester Intl to Lambert-St Louis are usually found in March or July, booked 63 days in advance, depart on a Saturday or Thursday and return on a Monday

Cheap flight deals from Rochester to St. Louis

Round-trip from	$237 (American Airlines)
Popular in	November
Cheapest in	March
Average price	$352

From Rochester Greater Rochester Intl to Lambert-St Louis

Search Deals

Highest demand for flights based on searches. 10% potential increase in price ($45 potential increase over avg. RT price).

Search Deals

Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).

Search Deals

Average for round-trip flights in July 2025

Search Deals

Find flight deals from Rochester to St. Louis

Cheapest flights from Rochester to St. Louis
Explore the most affordable flight options available from Rochester to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Tue 8/1911:01 amROC - STL

1 stop8h 18mAmerican Airlines

Tue 8/266:00 amSTL - ROC

1 stop4h 23mAmerican Airlines

Deal found 7/27

$237

Tue 8/266:00 amROC - STL

1 stop7h 31mDelta

Sat 8/306:00 amSTL - ROC

1 stop4h 22mDelta

Deal found 7/29

$297

Thu 9/44:40 pmROC - STL

2 stops6h 55mSouthwest

Sat 9/67:20 amSTL - ROC

2 stops6h 40mSouthwest

Deal found 7/28

$312

Fri 8/296:30 amROC - STL

1 stop5h 10mUnited Airlines

Tue 9/26:35 amSTL - ROC

2 stops6h 36mUnited Airlines

Deal found 7/28

$315

Mon 9/81:47 pmROC - STL

3 stops23h 13mMultiple Airlines

Sun 9/1410:35 amSTL - ROC

2 stops25h 17mMultiple Airlines

Deal found 7/28

$352

Wed 8/136:40 amROC - STL

2 stops28h 00mSpirit Airlines

Sun 8/172:30 pmSTL - ROC

3 stops32h 20mSpirit Airlines

Deal found 7/29

$366

Best flights from Rochester to St. Louis
Discover carefully curated flight deals from Rochester to St. Louis that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated July 29, 2025.

Tue 8/1911:01 amROC - STL

1 stop8h 18mAmerican Airlines

Tue 8/266:00 amSTL - ROC

1 stop4h 23mAmerican Airlines

Deal found 7/27

$237

Tue 8/266:00 amROC - STL

1 stop7h 31mDelta

Sat 8/306:00 amSTL - ROC

1 stop4h 22mDelta

Deal found 7/29

$297

Thu 9/44:40 pmROC - STL

2 stops6h 55mSouthwest

Sat 9/67:20 amSTL - ROC

2 stops6h 40mSouthwest

Deal found 7/28

$312

Fri 8/296:30 amROC - STL

1 stop5h 10mUnited Airlines

Tue 9/26:35 amSTL - ROC

2 stops6h 36mUnited Airlines

Deal found 7/28

$315

Mon 9/81:47 pmROC - STL

3 stops23h 13mMultiple Airlines

Sun 9/1410:35 amSTL - ROC

2 stops25h 17mMultiple Airlines

Deal found 7/28

$352

Wed 8/136:40 amROC - STL

2 stops28h 00mSpirit Airlines

Sun 8/172:30 pmSTL - ROC

3 stops32h 20mSpirit Airlines

Deal found 7/29

$366

Last-minute flights from Rochester to St. Louis
Discover last-minute flight deals from Rochester to St. Louis. Data last updated July 29, 2025 and is based on user searches.

Wed 8/136:40 amROC - STL

2 stops28h 00mSpirit Airlines

Sun 8/172:30 pmSTL - ROC

3 stops32h 20mSpirit Airlines

Deal found 7/29

$366

Wed 8/136:40 amROC - STL

2 stops28h 00mMultiple Airlines

Sun 8/178:00 amSTL - ROC

2 stops13h 10mMultiple Airlines

Deal found 7/29

$528

Tue 8/1911:01 amROC - STL

1 stop8h 18mAmerican Airlines

Tue 8/266:00 amSTL - ROC

1 stop4h 23mAmerican Airlines

Deal found 7/27

$237

Tue 8/266:00 amROC - STL

1 stop7h 31mDelta

Sat 8/306:00 amSTL - ROC

1 stop4h 22mDelta

Deal found 7/29

$297

Fri 8/296:30 amROC - STL

1 stop5h 10mUnited Airlines

Tue 9/26:35 amSTL - ROC

2 stops6h 36mUnited Airlines

Deal found 7/28

$315

Fri 8/294:40 pmROC - STL

2 stops6h 55mSouthwest

Tue 9/21:35 pmSTL - ROC

2 stops7h 30mSouthwest

Deal found 7/28

$353

Fly from

Fly to

Route

Depart

Return

Price

RochesterSt. Louis

ROC - STL

ROCSTL

Rochester Greater Rochester Intl

Tue 8/19

11:01 am-6:19 pm

1 stop8h 18m

Lambert-St Louis

Tue 8/26

6:00 am-11:23 am

1 stop4h 23m

$237

RochesterSt. Louis

ROC - STL

ROCSTL

Rochester Greater Rochester Intl

Tue 8/26

6:00 am-12:31 pm

1 stop7h 31m

Lambert-St Louis

Sat 8/30

6:00 am-11:22 am

1 stop4h 22m

$297

RochesterSt. Louis

ROC - STL

ROCSTL

Rochester Greater Rochester Intl

Thu 9/4

4:40 pm-10:35 pm

2 stops6h 55m

Lambert-St Louis

Sat 9/6

7:20 am-3:00 pm

2 stops6h 40m

$312

RochesterSt. Louis

ROC - STL

ROCSTL

Rochester Greater Rochester Intl

Fri 8/29

6:30 am-10:40 am

1 stop5h 10m

Lambert-St Louis

Tue 9/2

6:35 am-2:11 pm

2 stops6h 36m

$315

RochesterSt. Louis

ROC - STL

ROCSTL

Rochester Greater Rochester Intl

Mon 9/8

1:47 pm-12:00 pm

3 stops23h 13m

Lambert-St Louis

Sun 9/14

10:35 am-12:52 pm

2 stops25h 17m

$352

RochesterSt. Louis

ROC - STL

ROCSTL

Rochester Greater Rochester Intl

Wed 8/13

6:40 am-9:40 am

2 stops28h 00m

Lambert-St Louis

Sun 8/17

2:30 pm-11:50 pm

3 stops32h 20m

$366

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/27

Best time to book a flight from Rochester to St. Louis

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

How far ahead should I book a flight from Rochester to St. Louis?

The price you pay for your flight from Rochester to St. Louis may vary depending on when you book. For the best chance of a lower fare, look to book 63 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, August is the cheapest month in which you can book a flight from Rochester to St. Louis (average of $311). Flying from Rochester to St. Louis in March is currently the most expensive (average of $356). 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.

What is the cheapest time of day to fly from ROC to STL?

One of the essential ways to save on airfare from Rochester to St. Louis is to remain as flexible as possible. Flights that are at noon tend to be the most expensive. A flight in the morning could potentially save you up to 20% on airfare.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Southwest, Delta, and United Airlines from Rochester to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Southwest

8.0

Very good

4,238 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

We experienced bad weather, which turned our 1.5 hour flight from Las Vegas to Denver, into 3.5. The pilot and crew kept us updated and explained that we had to circle and or possibly redirect to another airport. After circling for sometime, we were able to land smoothly in Denver. Thank you to all the flight crew, tower control, and all who got us to our destination safely.

Southwest

8.0

Very good

4,238 reviews

Southwest

8.0

Very good

4,238 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

Delta

8.0

Very good

7,979 reviews

Southwest

8.0

Very good

4,238 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

United Airlines

7.4

Good

8,896 reviews

Southwest

8.0

Very good

4,238 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

American Airlines

7.2

Good

10,000 reviews

Southwest

8.0

Very good

4,238 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

Spirit Airlines

6.3

Okay

8,044 reviews

Southwest

8.0

Very good

4,238 reviews

Reviews

1 / 20

8.0

Excellent

Gina,Jul 2025

LAS - DEN

Related info for your journey

What are the cheapest airlines flying from Rochester to St. Louis round-trip?
Flying on American Airlines is currently your cheapest option to St. Louis, with prices starting at $237. Additional round-trip tickets that might be worth considering are offered by Delta and Southwest, with the lowest prices starting at $297 and $312, respectively. Users have found that American Airlines is 40% cheaper than the other options available to this destination.
Can I find deals for flights from Rochester to St. Louis that include hotel bookings?
Yes. In addition to deals on Rochester to St. Louis flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Rochester to St. Louis?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Rochester to St. Louis.
Can I find deals for business class flights from Rochester to St. Louis?
Yes. Cheapflights offers flight deals from Rochester 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 Rochester to St. Louis?
Currently, August is the cheapest month in which you can book a flight from Rochester to St. Louis (average of $311). Flying from Rochester to St. Louis in March is currently the most expensive (average of $356). 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

O'Fallon

Maryland Heights

Fairview Heights

Collinsville

Eureka

St. Peters

Glencoe

Alton

Chesterfield

Festus

Farmington

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Top 4 airlines flying from Rochester to St. Louis

Airline	Cheapest	Average	Flexibility	On-time
American Airlines	Cheapest$266	Average$381	FlexibilityNo cancel fee	On-time71%
United Airlines	Cheapest$286	Average$366	FlexibilityNo cancel fee	On-time69%
Delta	Cheapest$286	Average$416	FlexibilityNo cancel fee	On-timeN/A
Southwest	Cheapest$356	Average$416	FlexibilityNo cancel fee	On-time63%

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$237+ Cheap flights from Rochester to St. Louis (ROC - 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 8/19. Fares are subject to change and may not be available on all flights or dates of travel.

Find cheap flights from Rochester to St. Louis with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Cheapflights Tip: The best prices from Rochester Greater Rochester Intl to Lambert-St Louis are usually found in March or July, booked 63 days in advance, depart on a Saturday or Thursday and return on a Monday

Cheap flight deals from Rochester to St. Louis

Round-trip from

Popular in

Cheapest in

Average price

Find flight deals from Rochester to St. Louis

Cheapest flights from Rochester to St. LouisExplore the most affordable flight options available from Rochester to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Explore the most affordable flight options available from Rochester to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.

Cheapflights Fare Finder

Use the filters below to find and compare flights from Rochester to St. Louis that are best for you.

Best time to book a flight from Rochester to St. Louis

Have a flexible travel schedule? Discover the best time to fly to St. Louis from Rochester with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Rochester to St. Louis

How far ahead should I book a flight from Rochester to St. Louis?

Use this chart to determine the optimal time to book a round-trip flight from Rochester to St. Louis. Price data was last updated on July 25, 2025.

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

What is the cheapest time of day to fly from ROC to STL?

Find hourly flight availability from Rochester to St. Louis. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated July 29, 2025.

Reviews of airlines servicing St. Louis

See what other customers who have flown with Southwest, Delta, and United Airlines from Rochester to St. Louis have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What are the cheapest airlines flying from Rochester to St. Louis round-trip?

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

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

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

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

Traveling to a place near St. Louis?

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Alternative routes for Rochester to St. Louis

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Top 4 airlines flying from Rochester to St. Louis

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Cheapest flights from Rochester to St. Louis
Explore the most affordable flight options available from Rochester to St. Louis. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 29, 2025.