Cheap Flights from St. Louis (STL) to Mammoth Lakes (MMH)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Mammoth Lakes, CA (MMH-Mammoth Yosemite)

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Mammoth Yosemite Airport (MMH) cost?
Grab a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Mammoth Yosemite Airport (MMH) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from Lambert-St. Louis Intl. Airport (STL) to Mammoth Yosemite Airport (MMH)?
is the least expensive month to fly from STL to MMH. Timing your trip outside of the busy season is often the key to landing a great deal.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Mammoth Yosemite Airport (MMH)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Tailor the search to your trip, then sort by "Price (lowest to highest)" to see which carrier offers the cheapest STL to MMH flight.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Mammoth Yosemite Airport (MMH)?
Direct flights from Lambert-St. Louis Intl. Airport (STL) to Mammoth Yosemite Airport (MMH) aren't available daily, so you'll need to take a flight with a layover. Explore your options with our filter tool. Enter your dates and click on either "1 Stop" or "2+ Stops."
What day of the week has the most flights from STL to MMH?
Friday is generally the busiest day for flights, while Tuesday is often the quietest.* Keep in mind that flight schedules can vary depending on various factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Lambert-St. Louis Intl. Airport (STL) to Mammoth Yosemite Airport (MMH)?
Opt for a flight from Lambert-St. Louis Intl. Airport (STL) to Mammoth Yosemite Airport (MMH) that leaves before 3 PM to reduce the likelihood of delays. Departures later than this are on average 22% more likely to be canceled.**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 Lambert-St. Louis Intl. Airport (STL) to Mammoth Yosemite Airport (MMH) last-minute?
Last-minute bookings from STL to MMH are generally more expensive. To lock in the best rates, start searching for flights as soon as possible. That said, if you're flexible with your travel plans, you may score a cheap ticket right before your journey.
Is it cheaper to book a STL to MMH flight and hotel package?
You'll generally save money by securing a STL to MMH flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's easy to manage it all in one convenient place. Once you've selected your preferred accommodations and flights, you can add extras like tours, activities and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Mammoth Yosemite Airport (MMH)?
If you booked your STL to MMH flight in the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of fare you purchased, additional charges may apply for changes after that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal for more information.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Mammoth Yosemite
Distance
1542 mi

Book with confidence

Book with confidence

St. Louis to Mammoth Lakes Flights

The cheapest times to fly from St. Louis to Mammoth Lakes

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 St. Louis to Mammoth Lakes are during the month of . You can find some of the cheapest flights from St. Louis to Mammoth Lakes with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from St. Louis to Mammoth Lakes

Sunday is one of the best days to book for cheap flights from St. Louis to Mammoth Lakes: 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 St. Louis to Mammoth Lakes

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 St. Louis to Mammoth Lakes in 2025. You can also book with separate airlines for your outbound and return journeys, from 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 St. Louis to Mammoth Lakes 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 St. Louis to Mammoth Lakes 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.

 

St. Louis to Mammoth Lakes Flights

Explore a world of travel with Expedia

Explore a world of travel with Expedia

*Available to One Key members.