$141 Cheap Flights from Sacramento (SMF) to St. Louis (STL)

View $141 flight on Tue, Oct 28, 2025Opens in a new window

Popular airlines from Sacramento Intl. Airport (SMF) to St. Louis Lambert Intl. Airport (STL)

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Cheap Flights from Sacramento to St. Louis (SMF-STL)

Prices were available within the past 7 days and start at $141 for one-way flights and $162 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Frontier Airlines
Thu, Oct 30 - Sat, Nov 1
SMF
Sacramento
STL
St. Louis
$162 Roundtrip, found 18 hours ago
$162
Roundtrip
found 18 hours ago
Select Frontier Airlines flight, departing Thu, Oct 30 from Sacramento to St. Louis, returning Sat, Nov 1, priced at $162 found 18 hours ago
Frontier Airlines
Sun, Oct 19 - Thu, Oct 30
SMF
Sacramento
STL
St. Louis
$176 Roundtrip, found 1 day ago
$176
Roundtrip
found 1 day ago
Select Frontier Airlines flight, departing Sun, Oct 19 from Sacramento to St. Louis, returning Thu, Oct 30, priced at $176 found 1 day ago
United
Tue, Oct 7 - Wed, Oct 8
SMF
Sacramento
STL
St. Louis
$178 Roundtrip, found 2 days ago
$178
Roundtrip
found 2 days ago
Select United flight, departing Tue, Oct 7 from Sacramento to St. Louis, returning Wed, Oct 8, priced at $178 found 2 days ago
American Airlines
Tue, Oct 7 - Wed, Oct 8
SMF
Sacramento
STL
St. Louis
$183 Roundtrip, found 2 days ago
$183
Roundtrip
found 2 days ago
Select American Airlines flight, departing Tue, Oct 7 from Sacramento to St. Louis, returning Wed, Oct 8, priced at $183 found 2 days ago
Frontier Airlines
Fri, Oct 24 - Wed, Nov 5
SMF
Sacramento
STL
St. Louis
$186 Roundtrip, found 6 days ago
$186
Roundtrip
found 6 days ago
Select Frontier Airlines flight, departing Fri, Oct 24 from Sacramento to St. Louis, returning Wed, Nov 5, priced at $186 found 6 days ago
United
Thu, Nov 13 - Sat, Nov 15
SMF
Sacramento
STL
St. Louis
$188 Roundtrip, found 2 days ago
$188
Roundtrip
found 2 days ago
Select United flight, departing Thu, Nov 13 from Sacramento to St. Louis, returning Sat, Nov 15, priced at $188 found 2 days ago
United
Tue, Oct 21 - Sat, Oct 25
SMF
Sacramento
STL
St. Louis
$190 Roundtrip, found 3 days ago
$190
Roundtrip
found 3 days ago
Select United flight, departing Tue, Oct 21 from Sacramento to St. Louis, returning Sat, Oct 25, priced at $190 found 3 days ago
Frontier Airlines
Thu, Oct 23 - Sat, Oct 25
SMF
Sacramento
STL
St. Louis
$197 Roundtrip, found 2 days ago
$197
Roundtrip
found 2 days ago
Select Frontier Airlines flight, departing Thu, Oct 23 from Sacramento to St. Louis, returning Sat, Oct 25, priced at $197 found 2 days ago
Delta
Thu, Nov 13 - Sat, Nov 15
SMF
Sacramento
STL
St. Louis
$221 Roundtrip, found 2 days ago
$221
Roundtrip
found 2 days ago
Select Delta flight, departing Thu, Nov 13 from Sacramento to St. Louis, returning Sat, Nov 15, priced at $221 found 2 days ago
Alaska Airlines
Fri, Nov 14 - Sun, Nov 16
SMF
Sacramento
STL
St. Louis
$223 Roundtrip, found 2 days ago
$223
Roundtrip
found 2 days ago
Select Alaska Airlines flight, departing Fri, Nov 14 from Sacramento to St. Louis, returning Sun, Nov 16, priced at $223 found 2 days ago

Find the cheapest month to fly from Sacramento (SMF) to St. Louis (STL)

October is typically the cheapest month to fly

From $138 - $469 per traveler.

Frequently asked questions

How much does a flight from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL) cost?
Get a cheap one-way flight from $141 or cheap return flight from $162 from Sacramento Intl. Airport (SMF) 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 Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL)?
Traveling in October is a great way to save, as it's the cheapest month for flights between SMF and STL. You'll often find the lowest fares during the off-season.
Which airlines fly direct from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL)?
If you're departing from Sacramento Intl. Airport (SMF), you can jump on a direct flight to Lambert-St. Louis Intl. Airport (STL) with Southwest Airlines.
What is the cheapest airline that flies from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline that'll fly you from SMF to STL, use Expedia's filter tool. Customize your search based on your travel style, such as preferred carriers and ideal departure window. You can then sort your results by "Price (lowest to highest)" to see the cheapest flights first.
How many flights per day from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL)?
On average, you can take your pick of 3 nonstop flights departing from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL) each week. If you can't find one that works for your schedule, think about hopping on a flight with a layover. Filter your search results on Expedia to include one or two stops and choose the next best alternative.
What are the most popular departure times for flights from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL)?
More passengers fly between SMF and STL at 12 PM than at any other time. Rather skip the crowds? Pick a flight outside the busiest times and you're likely to save on your fare as well.
What day of the week has the most flights from SMF to STL?
If you jet off on a Friday, you'll get the biggest range of options for flights from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL).
What is the earliest flight from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL)?
The earliest flight jetting off from Sacramento Intl. Airport (SMF) is at around 12:45PM UTC-8. Catch this flight and you'll reach Lambert-St. Louis Intl. Airport (STL) at approximately 6:25PM UTC-6. The total flight duration is 3h 40m.
How long does it take to fly from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL)?
Flights from SMF to STL have an average travel time of 3 hours and 40 minutes. The total distance between the two airports is 1,700 mi.
What airline has the least delays from SMF to STL?
Consider traveling with Southwest Airlines if you'd like to go straight from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL) without any delays. This airline has the strongest track record for punctuality, with an on-time performance of 82%. Want to get notified of any changes? You can keep an eye on your flight status using the Expedia App.
What is the best time to fly from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL)?
To land at Lambert-St. Louis Intl. Airport (STL) without delays, choose a flight that leaves from Sacramento Intl. Airport (SMF) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this hour.**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.
What airports do you fly into for St. Louis from Sacramento Intl. Airport (SMF)?
Explore your flight options from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL). This is the only airport in St. Louis you can arrive at if you're taking a direct flight.
Is it cheaper to buy a plane ticket from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Holding off until just before your trip to book a ticket from SMF to STL generally means paying more. Although you may find some last-minute discounts, they're not always guaranteed. Keep your travel plans flexible for the best chance of snagging a bargain.
Is it cheaper to book a SMF to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a SMF to STL flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one convenient place will take the stress out of planning your trip. Just pick your flights and select from our extensive range of hotels, then personalize your trip with other add-ons like car rentals and activities.
Can I cancel or change the date of my flight from Sacramento Intl. Airport (SMF) to Lambert-St. Louis Intl. Airport (STL)?
Usually, it's possible to cancel or reschedule your SMF to STL flight. However, for bookings made more than 24 hours ago, additional charges may apply. Check your airline's policies in your itinerary to see what changes are possible and if any costs are involved. You'll also find more details on our Customer Service portal.

Travel information

Travel information

Origin airport
Sacramento Intl.
Destination airport
Lambert-St. Louis Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, Southwest Airlines, United
Roundtrip price
$162
Distance
1674 mi
Average flight time
7 hours 52 mins

Book with confidence

Book with confidence

Sacramento to St. Louis Flights

The cheapest times to fly from Sacramento 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 Sacramento to St. Louis are during the month of October. You can find some of the cheapest flights from Sacramento to St. Louis with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from Sacramento 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 Sacramento 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 Sacramento to St. Louis in 2025. You can also book with separate airlines for your outbound and return journeys, from $141 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 Sacramento 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 Sacramento 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.

 

Sacramento to St. Louis Flights

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