Cheap Flights from Morristown (MMU) to St. Louis (STL)

Popular airlines from Morristown, NJ (MMU-Morristown Municipal) to St. Louis Lambert Intl. Airport (STL)

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Flights from Morristown (MMU) to St. Louis (STL)
Origin airport
Morristown Municipal
Destination airport
Lambert-St. Louis Intl.
Distance
857 mi

Morristown to St. Louis Flights

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

 

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

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

 

Frequently asked questions

How much does a flight from Morristown Municipal Airport (MMU) to Lambert-St. Louis Intl. Airport (STL) cost?
Get a cheap one-way flight or cheap return flight from Morristown Municipal Airport (MMU) 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 Morristown Municipal Airport (MMU) to Lambert-St. Louis Intl. Airport (STL)?
Traveling in is a great way to save, as it's the cheapest month for flights between MMU and STL. You'll usually find the lowest fares during off-peak months.
What is the cheapest airline that flies from Morristown Municipal Airport (MMU) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from MMU to STL, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and seat class. You can then sort your results by "Price (lowest to highest)" to discover the cheapest flight right away.
How many flights per day from Morristown Municipal Airport (MMU) to Lambert-St. Louis Intl. Airport (STL)?
You'll have to catch a flight with a layover if you're traveling from Morristown Municipal Airport (MMU) to Lambert-St. Louis Intl. Airport (STL). Direct flights don't operate daily on this route. However, simply filter your search to include one or more stops to discover the best option for your trip.
What day of the week has the most flights from MMU to STL?
You'll usually find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can vary from season to season and during public holidays or peak travel times.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Morristown Municipal Airport (MMU) to Lambert-St. Louis Intl. Airport (STL)?
To avoid potential delays on the Morristown Municipal Airport (MMU) to Lambert-St. Louis Intl. Airport (STL) route, travel before 3 PM. Later departures have a 22% higher chance of being 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 Morristown Municipal Airport (MMU) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Last-minute fares from MMU to STL are generally more expensive. To secure the cheapest rates, start looking for flights well in advance. That said, if you're flexible with your travel dates, you may land a cheap ticket right before you leave.
Is it cheaper to book a MMU to STL flight and hotel package?
You'll typically save money by securing a MMU to STL flight and hotel package compared to booking separately. In fact, travelers could save hundreds of dollars by bundling with Expedia. And it's simple to manage it all in one place. After choosing your ideal accommodations and flights, consider other add-ons like car rentals, activities and tours.
Can I cancel or change the date of my flight from Morristown Municipal Airport (MMU) to Lambert-St. Louis Intl. Airport (STL)?
If you reserved your MMU to STL flight in the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, visit our Customer Service portal for further details.

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