
Book Cheap United flight from St. Louis (STL) to Mammoth Lakes (MMH)
Find The Best Day to Book a Cheap United Flights From St. Louis to Mammoth Lakes
Grab a great United flight from STL to MMH
To find a great deal on United flights with Travelocity, simply enter your origin and destination airports, pick your travel dates, and hit search. From here, you can sort by price, flight duration, and arrival/departure time. You can also filter to find nonstop flights.
Flying United St. Louis to Mammoth Lakes gives you fights to choose from. With that direct flight time of , you’ll be touching down before you know it.
Find cheap flights with United between St. Louis and Mammoth Lakes
United has a range of great fares on stacks of flights, and to find the most affordable for you, there are a few tricks you can try. Booking in advance, for example, is a great way to grab a fantastic deal. Also, choose the cheapest month, if you can. One-way flights from St. Louis to Mammoth Lakes with United are .
The more flexible you are, the more affordable flights you’re likely to find. Consider one-way flights and connecting flights, as well as standard roundtrip and direct options. Even if you’re flying today, cheap last-minute flights are easy to find by entering your travel dates and hitting search.
Reasons to book your United flights with Travelocity
Travelocity makes it easy to book a seat, anywhere in the world. The vast inventory, fast search, and advanced filters put some of the best deals on the planet in one place. Whether you’re traveling on business, with friends, family, or on your own, take your pick from some fantastic options. And with free cancellation and pay later options, you can travel more and worry less.
Airport code | Country | Airport name | Number of flights |
|---|---|---|---|
| ORD | USA | O'Hare Intl. | 227 |
| DEN | USA | Denver Intl. | 226 |
| IAH | USA | George Bush Intercontinental | 136 |
| IAD | USA | Washington Dulles Intl. | 100 |
| SFO | USA | San Francisco Intl. | 64 |
| LAX | USA | Los Angeles Intl. | 23 |
| EWR | USA | Liberty Intl. | 20 |
| FRA | DEU | Frankfurt Intl. | 19 |
| NRT | JPN | Narita Intl. | 19 |
| PEK | CHN | Capital Intl. | 16 |
Travelers ❤️ these 🏨 after their flight to Mammoth Lakes

Convict Lake Resort
Perfect location! Our cabin still looks newly-renovated, complete with modern amenities including kitchen essentials. I just wish the WiFi connection is better. Time to get a Starlink!
Reviewed on Jan 24, 2026

McGee Creek Lodge
It was our best vacation ever. The house is very comfortable, all amenities are taken into account - dishes , washing machine and dryer , dishwasher. The house was warm and the bed was comfortable . We spent two nights in complete comfort and coziness . We will definitely be back . 10 out of 10
Reviewed on Jan 20, 2026

Shilo Inns Mammoth Lakes
The staff is really helpful and even though the property is old it’s is clean and well taken care of. Great value for the price
Reviewed on Jan 22, 2026
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