C$184 Cheap Flights from Sacramento International to St Louis

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Flight deals from Sacramento International to St Louis

Looking for a cheap last-minute deal or the best round-trip flight from Sacramento International to St Louis? Find the lowest prices on one-way and round-trip tickets right here.

Find the cheapest month to fly from Sacramento International to St Louis

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

Direct flights from Sacramento International to St Louis

Sacramento International to St Louis: Alternative routes

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

Sacramento to St Louis: Flight information

The things to know before you go.
Cheapest flight foundC$383
Cheapest month to flySeptember
Average flight time3 hrs, 40 mins
Most popular airlineSouthwest Airlines
Average flights per week8

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

The best price we found for a round-trip flight from Sacramento International to St Louis is C$383. 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.
3 hours and 40 minutes is the average flight time from Sacramento International to St Louis.
Southwest Airlines flies direct from Sacramento International to St Louis.
There are 8 flights per week flying from Sacramento International to St Louis, as of July 2025.
The cheapest month to fly from Sacramento International to St Louis is usually September.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Sacramento International Airport to St Louis Airport on Wednesday, September 3, 2025.
Yes – the average flight time is 3 hours and 40 minutes.
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.
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.
Currently, Spirit Airlines and Southwest Airlines offer the cheapest flight tickets to St Louis.

Flying from Sacramento International Airport (SMF) to Lambert-St. Louis International Airport (STL): what you need to know

  • Hop on a direct flight from Sacramento International Airport to Lambert-St. Louis International Airport and you'll be in the air for an average of 3 hours 35 minutes.

  • St Louis's timezone is UTC-5, making St Louis two hours ahead of Sacramento.

  • Flights from SMF to STL start from 05:30 — the earliest with Southwest Airlines. The latest departure is at 13:40 with Southwest Airlines. In total, you can take your pick of four weekly Sacramento International Airport to Lambert-St. Louis International Airport flights.

  • Arrive at the airport on time so you don't miss your SMF to STL flight. Be there at least two hours ahead for international flights and an hour early for domestic departures to avoid sprinting to your gate.

  • Be prepared for longer lines during popular months like August. Arriving up to four hours in advance for international flights and two hours for domestic departures will help ensure a smooth travel experience.

  • Getting to St Louis (and then discovering more of United States!) is a breeze with Southwest Airlines. This popular carrier offers direct flights from Sacramento International Airport to Lambert-St. Louis International Airport.

  • Most passengers choose to travel with Southwest Airlines on this route.

  • Southwest Airlines is the most punctual carrier that operates SMF to STL flights, with 71.15% of its services landing on time.

  • If you'd like to split up your journey, simply uncheck 'Direct flights only' when searching for your ticket from Sacramento International Airport to Lambert-St. Louis International Airport. Here are the top stopovers between SMF and STL:

    • Denver International Airport

    • Salt Lake City International Airport

    • Harry Reid Airport (formerly McCarran Airport)

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

  • Right now, C$184 is the cheapest price we've seen for a one-way Sacramento International Airport to Lambert-St. Louis International Airport flight. The best price for a return ticket is C$383. Bear in mind that fares may change due to demand at the time of booking.

  • To score cheap tickets from SMF to STL, reserve your journey six months before your planned departure.

  • May is the cheapest month for flights from Sacramento International Airport to Lambert-St. Louis International Airport. If you're looking to travel at a different time of year, the 'Whole month' tool will show you the lowest prices across every month.

  • Snapping up cheap flights from SMF to STL is a piece of cake with Price Alerts. All you need to do is create one of these automatic alerts and we'll notify you when fares go down.

  • Pick your preferred departure and arrival times, airlines and number of stops with the filters. Alternatively, sort your results by 'Cheapest' to see the best deals on flights from Sacramento International Airport to Lambert-St. Louis International Airport.

Handy information about Sacramento International Airport (SMF)

  • SMF is located at 6900 Airport Boulevard.

  • Sacramento International Airport gets high marks for on-time performance. 82.15% of flights that take off from SMF arrive at their destination on time.

  • To get to Sacramento International Airport from central Sacramento, it takes about 15 minutes by car. This depends on traffic though. It's approximately 19 kilometres from the airport to the city centre.

  • Catching public transport? You can expect a journey time of around 25 minutes.

  • Spending the night in a hotel can take the stress out of getting to the airport on time. If you need somewhere to stay before your flight from Sacramento International Airport to Lambert-St. Louis International Airport, take a look at Holiday Inn Express & Suites Sacramento Airport Natomas. It's a short ride from SMF.

Arriving at Lambert-St. Louis International Airport (STL)

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

  • The street address for STL is 10701 Lambert International Blvd..

  • Lambert-St. Louis International Airport to the centre of St Louis has a drive time of around 20 minutes. It's approximately 26 kilometres away.

  • It takes roughly 35 minutes when travelling by public transport.

When to fly to Lambert-St. Louis International Airport (STL)

  • The quietest month for a flight from Sacramento International Airport to Lambert-St. Louis International Airport is April, while July is the most popular. Choose the best time to visit St Louis based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • When reserving your flight from Sacramento International Airport to Lambert-St. Louis International Airport, consider the kind of weather you enjoy. July is the warmest month in St Louis, with temperatures ranging from 17ºC (63ºF) to 33ºC (91ºF).

  • If you like cooler conditions, look for a cheap ticket from SMF to STL in January. Temperatures average between -8ºC (18ºF) and 7ºC (45ºF) then.

Explore more of United States

  • St Louis is always a good idea, but there are so many other corners of United States just waiting to be discovered. Around 418 kilometres north-east of St Louis, a trip to Chicago will fill your itinerary to the brim. Don't miss top attractions like Millennium Park, Art Institute of Chicago and LandShark Beer Garden at Navy Pier.

  • Around 370 kilometres east of St Louis, Indianapolis is another favourite stop in United States. Experience major highlights starting with The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.