Cheap Flights from Sacramento CA to St Louis MO from $240

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Flight deals from Sacramento to St Louis

Looking for a cheap last-minute deal or the best round-trip flight from Sacramento to St Louis Airport? If you want to travel next month, round-trip fares start from $240. Find the lowest prices on one-way and round-trip tickets right here.

St Louis.$240 per passenger.Departing Wed, Sep 16, returning Mon, Sep 21.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Sacramento International on Wed, Sep 16, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departing from St Louis on Mon, Sep 21, arriving in Sacramento International.Price includes taxes and charges.From $240, select.

St Louis.$241 per passenger.Departing Sat, Oct 3, returning Mon, Oct 5.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Sacramento International on Sat, Oct 3, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departing from St Louis on Mon, Oct 5, arriving in Sacramento International.Price includes taxes and charges.From $241, select.

St Louis.$244 per passenger.Departing Mon, Sep 28, returning Mon, Oct 5.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Sacramento International on Mon, Sep 28, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departing from St Louis on Mon, Oct 5, arriving in Sacramento International.Price includes taxes and charges.From $244, select.

St Louis.$256 per passenger.Departing Mon, Aug 31, returning Wed, Sep 2.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Sacramento International on Mon, Aug 31, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departing from St Louis on Wed, Sep 2, arriving in Sacramento International.Price includes taxes and charges.From $256, select.

St Louis.$313 per passenger.Departing Sun, Nov 1, returning Wed, Nov 4.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Sacramento International on Sun, Nov 1, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departing from St Louis on Wed, Nov 4, arriving in Sacramento International.Price includes taxes and charges.From $313, select.

St Louis.$357 per passenger.Departing Tue, Oct 20, returning Tue, Nov 3.Round-trip flight with United.Outbound indirect flight with United, departing from Sacramento International on Tue, Oct 20, arriving in St Louis.Inbound indirect flight with United, departing from St Louis on Tue, Nov 3, arriving in Sacramento International.Price includes taxes and charges.From $357, select.

St Louis.$393 per passenger.Departing Fri, Aug 28, returning Sun, Aug 30.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Sacramento International on Fri, Aug 28, arriving in St Louis.Inbound indirect flight with Frontier Airlines, departing from St Louis on Sun, Aug 30, arriving in Sacramento International.Price includes taxes and charges.From $393, select.

St Louis.$418 per passenger.Departing Sat, Sep 5, returning Fri, Sep 11.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from Sacramento International on Sat, Sep 5, arriving in St Louis.Inbound direct flight with Southwest Airlines departing from St Louis on Fri, Sep 11, arriving in Sacramento International.Price includes taxes and charges.From $418, select.

St Louis.$524 per passenger.Departing Wed, Dec 23, returning Tue, Dec 29.Round-trip flight with United.Outbound indirect flight with United, departing from Sacramento International on Wed, Dec 23, arriving in St Louis.Inbound indirect flight with United, departing from St Louis on Tue, Dec 29, arriving in Sacramento International.Price includes taxes and charges.From $524, select.

St Louis.$529 per passenger.Departing Fri, Oct 2, returning Sun, Oct 4.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from Sacramento International on Fri, Oct 2, arriving in St Louis.Inbound direct flight with Southwest Airlines departing from St Louis on Sun, Oct 4, arriving in Sacramento International.Price includes taxes and charges.From $529, select.

St Louis.$554 per passenger.Departing Fri, Mar 12, returning Tue, Mar 16.Round-trip flight with Alaska Airlines.Outbound indirect flight with Alaska Airlines, departing from Sacramento International on Fri, Mar 12, arriving in St Louis.Inbound indirect flight with Alaska Airlines, departing from St Louis on Tue, Mar 16, arriving in Sacramento International.Price includes taxes and charges.From $554, select.

St Louis.$582 per passenger.Departing Sun, Sep 6, returning Sun, Oct 4.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from Sacramento International on Sun, Sep 6, arriving in St Louis.Inbound direct flight with Southwest Airlines departing from St Louis on Sun, Oct 4, arriving in Sacramento International.Price includes taxes and charges.From $582, select.

St Louis.$650 per passenger.Departing Fri, Aug 28, returning Sun, Aug 30.Round-trip flight with Southwest Airlines.Outbound direct flight with Southwest Airlines departing from Sacramento International on Fri, Aug 28, arriving in St Louis.Inbound direct flight with Southwest Airlines departing from St Louis on Sun, Aug 30, arriving in Sacramento International.Price includes taxes and charges.From $650, select.

St Louis.$1,169 per passenger.Departing Sat, Dec 26, returning Sat, Jan 2.Round-trip flight with United.Outbound indirect flight with United, departing from Sacramento International on Sat, Dec 26, arriving in St Louis.Inbound indirect flight with United, departing from St Louis on Sat, Jan 2, arriving in Sacramento International.Price includes taxes and charges.From $1,169, select.

Find the cheapest month to fly from Sacramento to St Louis

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Sacramento to St Louis flights are currently cheapest in September.

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Direct flights from Sacramento to St Louis

Sacramento to St Louis: Alternative routes

Compare routes from Sacramento to St Louis below. You may find an airport to fly into that's cheaper, faster, or easier than St Louis.

St Louis

20km from central St Louis

ClosestCheapest

from $240

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Belleville

32km from central St Louis

from $434

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Sacramento to St Louis: Flight information

The things to know before you go.

Cheapest flight found	$240
Cheapest month to fly	September
Average flight time	3 hrs, 35 mins
Most popular airline	Southwest Airlines
Average flights per week	7

Finding cheap flights from Sacramento to St Louis: Frequently asked questions

How much are round-trip flights from Sacramento to St Louis?

The best price we found for a round-trip flight from Sacramento to St Louis is $240. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.

How long does it take to fly from Sacramento to St Louis?

3 hours and 35 minutes is the average flight time from Sacramento to St Louis.

Which airlines fly direct from Sacramento to St Louis?

Southwest Airlines flies direct from Sacramento to St Louis.

How many flights are there a week from Sacramento to St Louis?

There are 7 flights per week flying from Sacramento to St Louis, as of August 2026.

When is the cheapest time to fly from Sacramento to St Louis?

The cheapest month to fly from Sacramento to St Louis is usually September.

Which upcoming date is cheapest to fly from Sacramento to St Louis Airport on?

After crunching the numbers on our flight calendar, we found that it is currently cheapest to fly from Sacramento to St Louis Airport on Wednesday, September 16, 2026.

Can I get a direct flight from Sacramento to St Louis Airport?

Yes – the average flight time is 3 hours and 35 minutes.

How can I find the best flight deal to St Louis?

We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to St Louis but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.

When is the best time to book flights to St Louis?

We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to St Louis is around 40 days in advance, so don’t leave your flight to the last minute.

Traveling from Sacramento to St Louis Lambert International Airport (STL): What you need to know

Sacramento's main airport is Sacramento International Airport (SMF). Check out your options for departing from this terminal when booking flights from Sacramento to St Louis Lambert International Airport (STL).
Book a direct Sacramento to St Louis Lambert International Airport flight and you'll be in the air for around 3 hours 40 minutes.
The timezone in St Louis is UTC-6, which is two hours ahead of Sacramento. St Louis Lambert International Airport is located in St Louis.
The most popular route is from Sacramento International Airport (SMF) to St Louis Lambert International Airport (STL). You can pick from 5 direct services each week. Southwest Airlines operates a 6:05am departure between SMF and STL.
Give yourself plenty of time to make your flight from Sacramento to STL. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.
July is a peak travel month. If you're taking off then or during a major holiday like Christmas or Thanksgiving, be there even earlier. Aim for at least two hours ahead for domestic flights and as much as four hours for international journeys.

Airports in Sacramento

Sacramento International Airport (SMF)

Sacramento International Airport (SMF) offers an easy route to your destination. Nonstop flights from Sacramento to St Louis Lambert International Airport (STL) depart from this terminal.
You can lock in a direct flight from Sacramento to St Louis Lambert International Airport with Southwest Airlines. This top carrier offers services from SMF.
The preferred airline for passengers flying between SMF and STL is Southwest Airlines.
The carrier with the most reliable on-time performance on this route is Southwest Airlines. Its services land as scheduled 74.77% of the time.
SMF is around 19 kilometers from central Sacramento. If you're catching a cab, ride-sharing or driving from the center, it'll take you 20 minutes or so to get there, depending on traffic conditions. If you're using public transport, expect the travel time to be around 50 minutes.
Get your flight from Sacramento to St Louis Lambert International Airport off to a relaxed start. Just a quick ride from Sacramento International Airport, stay at Holiday Inn Express & Suites Sacramento Airport Natomas by IHG and you'll be well-rested for the trip ahead.
Sacramento International Airport earns top marks for its on-time performance. 81% of flights that depart SMF arrive at their destination on time.
SMF is located at 6900 Airport Boulevard.

Stockton Metropolitan Airport (SCK)

With public transport, you can travel from central Sacramento to SCK in around 1 hour 30 minutes. The terminal is roughly 72 kilometers away, and making the trip by car will take approximately 55 minutes.
Start your trip early by booking a night near Stockton Metropolitan Airport before your Sacramento to STL flight. Convenient stays include Holiday Inn Express Stockton Southeast by IHG and Hampton Inn by Hilton Stockton.
59% of flights taking off from Stockton Metropolitan Airport stick to their scheduled arrival time.
The address for SCK is 5000 South Airport Way, Room 202.

About St Louis Lambert International Airport (STL)

The last thing you want is a long journey to your hotel if you're getting in late on a flight from Sacramento to St Louis Lambert International Airport. Book one of these accommodation options near STL instead:
To lock in the lowest price, reserve your vehicle around one week ahead of your Sacramento to St Louis Lambert International Airport flight.
The address for STL is 10701 Lambert International Blvd..

Getting from St Louis Lambert International Airport (STL) to central St Louis

From St Louis Lambert International Airport, central St Louis is around 24 kilometers away. It takes about 25 minutes to reach the city center by car.
Traveling on public transport takes around 30 minutes.

How to find the cheapest flights from Sacramento to St Louis Lambert International Airport (STL)

$116 is currently the lowest price for a one-way ticket from Sacramento to St Louis Lambert International Airport. A return flight starts at $240. These prices may change based on availability.
Don't leave everything to the last minute. You're more likely to find cheap flights from Sacramento to STL if you book early. Airlines often offer some excellent early bird rates.
Affordable Sacramento to St Louis Lambert International Airport tickets are easier to find when your travel dates are flexible. Use the 'Whole month' tool to compare fares across the month and then pick the cheapest day.
Stay on top of deals for plane tickets from Sacramento to STL by setting up a Price Alert. We'll send you an email or notification through the app when a new discounted fare appears.
Filters make it easier to track down a bargain for your flight from Sacramento to St Louis Lambert International Airport. Pick the flight times, carriers and stops that make sense for you. Then sort the results by 'Cheapest' to find the most affordable option fast.

The best time to fly from Sacramento to St Louis Lambert International Airport (STL)

December is the quietest month for flights from Sacramento to St Louis Lambert International Airport (STL), while July is the busiest. Figure out the best time to go to St Louis based on whether you like a laid-back vibe or a lively atmosphere.
When booking your Sacramento to STL plane ticket, consider the kind of weather forecast you're hoping for. July is the warmest month in St Louis, with temperatures ranging from 17ºC (63ºF) to 33ºC (91ºF).
Search for cheap tickets from Sacramento to St Louis Lambert International Airport in January if you want to travel in cooler conditions. Temperatures are at their lowest then, ranging between -7ºC (19ºF) and 8ºC (46ºF).

More about St Louis

When it comes to searching for somewhere to lay your head, you'll find the best stays in St Louis right here. Browse these options as soon as you've locked in your flight from Sacramento to St Louis Lambert International Airport:
There are loads of awesome things to do in St Louis when you're ready to sightsee. Kick off your exploring at The Gateway Arch followed by Saint Louis Arch and Museum at the Gateway Arch.

Explore more of the United States

You've done St Louis, now it's time to discover more of the United States. Travel around 257 kilometers east to Evansville to tick off its must-visit sights. From Mesker Park Zoo to Riverfront Park and Evansville Museum of Arts, History & Science, you'll have a full itinerary ahead.
If there's time to check out another great destination in the United States, consider Columbia, roughly 177 kilometers west of St Louis. Museum of Art and Archaeology, Mizzou Botanic Garden and Francis Quadrangle are key highlights.