$176 Cheap Flights from Rochester (RST) to St. Louis (STL)

View $176 flight on Mon, Dec 8, 2025Opens in a new window

Popular airlines from Rochester, MN (RST-Rochester Intl.) to St. Louis Lambert Intl. Airport (STL)

Cheap Flights from Rochester to St. Louis (RST-STL)

Prices were available within the past 7 days and start at $176 for one-way flights and $238 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Delta
Wed, Feb 18 - Tue, Feb 24
RST
Rochester
STL
St. Louis
$238 Roundtrip, found 21 hours ago
$238
Roundtrip
found 21 hours ago
Select Delta flight, departing Wed, Feb 18 from Rochester to St. Louis, returning Tue, Feb 24, priced at $238 found 21 hours ago
Delta
Sun, Nov 9 - Mon, Nov 24
RST
Rochester
STL
St. Louis
$243 Roundtrip, found 6 days ago
$243
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Nov 9 from Rochester to St. Louis, returning Mon, Nov 24, priced at $243 found 6 days ago
Delta
Fri, Nov 14 - Mon, Nov 24
RST
Rochester
STL
St. Louis
$249 Roundtrip, found 6 days ago
$249
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Nov 14 from Rochester to St. Louis, returning Mon, Nov 24, priced at $249 found 6 days ago
Delta
Sat, Nov 8 - Mon, Nov 24
RST
Rochester
STL
St. Louis
$273 Roundtrip, found 6 days ago
$273
Roundtrip
found 6 days ago
Select Delta flight, departing Sat, Nov 8 from Rochester to St. Louis, returning Mon, Nov 24, priced at $273 found 6 days ago
American Airlines
Wed, Nov 5 - Wed, Nov 12
RST
Rochester
STL
St. Louis
$278 Roundtrip, found 4 days ago
$278
Roundtrip
found 4 days ago
Select American Airlines flight, departing Wed, Nov 5 from Rochester to St. Louis, returning Wed, Nov 12, priced at $278 found 4 days ago
American Airlines
Thu, Nov 27 - Mon, Dec 1
RST
Rochester
STL
St. Louis
$283 Roundtrip, found 4 days ago
$283
Roundtrip
found 4 days ago
Select American Airlines flight, departing Thu, Nov 27 from Rochester to St. Louis, returning Mon, Dec 1, priced at $283 found 4 days ago
Delta
Fri, Feb 20 - Wed, Feb 25
RST
Rochester
STL
St. Louis
$287 Roundtrip, found 21 hours ago
$287
Roundtrip
found 21 hours ago
Select Delta flight, departing Fri, Feb 20 from Rochester to St. Louis, returning Wed, Feb 25, priced at $287 found 21 hours ago
Delta
Sun, Nov 9 - Sat, Nov 29
RST
Rochester
STL
St. Louis
$292 Roundtrip, found 6 days ago
$292
Roundtrip
found 6 days ago
Select Delta flight, departing Sun, Nov 9 from Rochester to St. Louis, returning Sat, Nov 29, priced at $292 found 6 days ago
Delta
Fri, Nov 14 - Sat, Nov 29
RST
Rochester
STL
St. Louis
$298 Roundtrip, found 6 days ago
$298
Roundtrip
found 6 days ago
Select Delta flight, departing Fri, Nov 14 from Rochester to St. Louis, returning Sat, Nov 29, priced at $298 found 6 days ago
Delta
Sat, Nov 8 - Fri, Nov 14
RST
Rochester
STL
St. Louis
$298 Roundtrip, found 21 hours ago
$298
Roundtrip
found 21 hours ago
Select Delta flight, departing Sat, Nov 8 from Rochester to St. Louis, returning Fri, Nov 14, priced at $298 found 21 hours ago

Alternative airports near St. Louis

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Lambert-St. Louis Intl. STL. Cheapest option available. Average driving time to city center is 20 minutes. Flights from $238
STL
Lambert-St. Louis Intl.
Cheapest
Average driving time to city center20 min
Flights from $238

Frequently asked questions

How much does a flight from Rochester Intl. Airport (RST) to Lambert-St. Louis Intl. Airport (STL) cost?
Lock in a cheap one-way flight from $176 or cheap return flight from $238 from Rochester Intl. Airport (RST) to Lambert-St. Louis Intl. Airport (STL) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight offers on this route.
What is the cheapest month to fly from Rochester Intl. Airport (RST) to Lambert-St. Louis Intl. Airport (STL)?
Planning your trip for February can help you save, as it's the cheapest month for flights between RST and STL. You'll typically find the lowest fares during the off-season.
What is the cheapest airline that flies from Rochester Intl. Airport (RST) to Lambert-St. Louis Intl. Airport (STL)?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that'll fly you from RST to STL. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Rochester Intl. Airport (RST) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to catch a flight with a layover when traveling from Rochester Intl. Airport (RST) to Lambert-St. Louis Intl. Airport (STL). There are no daily direct flights on this route. However, just filter your search to include one or more stops to discover an option that works for you.
What day of the week has the most flights from RST to STL?
Typically you'll find the most flight options available on a Friday. Tuesdays are often the quietest.* But this can vary depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Rochester Intl. Airport (RST) to Lambert-St. Louis Intl. Airport (STL)?
To avoid possible delays on the Rochester Intl. Airport (RST) to Lambert-St. Louis Intl. Airport (STL) route, aim to travel before 3 PM. Later departures have a 22% higher chance of cancellation.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from Rochester Intl. Airport (RST) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Booking your plane ticket from RST to STL right before your getaway is generally more expensive. But if you're flexible with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book a RST to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a RST to STL flight and hotel package with Expedia could result in significant savings. Better still, having everything in one place will take the stress out of planning your trip. Simply pick your flights and choose from our extensive range of hotels, then customize your trip with extras like activities and car rentals.
Can I cancel or change the date of my flight from Rochester Intl. Airport (RST) to Lambert-St. Louis Intl. Airport (STL)?
In most instances, you can cancel or modify your RST to STL flight. However, there may be additional fees, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's policies and fees on flight changes, or if you'd like further details, head to our Customer Service portal.

Travel information

Origin airport
Rochester Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
American Airlines, Delta
Roundtrip price
$238
Distance
373 mi

Book with confidence

Rochester to St. Louis Flights

The cheapest times to fly from Rochester to St. Louis

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Rochester to St. Louis are during the month of February. You can find some of the cheapest flights from Rochester to St. Louis with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Rochester to St. Louis

Sunday is one of the best days to book for cheap flights from Rochester to St. Louis: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Rochester to St. Louis

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Rochester to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $176 one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Rochester to St. Louis flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Rochester to St. Louis airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

 

Rochester to St. Louis Flights

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*Available to One Key members.