Cheap Flights from St. Louis (STL) to Princeton (PCT)

Popular airlines from St. Louis Lambert Intl. Airport (STL) to Princeton, NJ (PCT)

Alternative airports near Princeton

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to Mercer TTN. Cheapest option available. Average driving time to city center is 18 minutes. Flights from $214
TTN
Mercer
Cheapest
Average driving time to city center18 min
Flights from $214

Frequently asked questions

How much does a flight from Lambert-St. Louis Intl. Airport (STL) to Princeton, NJ (PCT) cost?
Get a cheap one-way flight or cheap return flight from Lambert-St. Louis Intl. Airport (STL) to Princeton, NJ (PCT) 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 Lambert-St. Louis Intl. Airport (STL) to Princeton, NJ (PCT)?
is the most affordable month to fly from STL to PCT. Timing your trip outside of the busy season is often the key to finding better deals on flights.
What is the cheapest airline that flies from Lambert-St. Louis Intl. Airport (STL) to Princeton, NJ (PCT)?
Use the filter tool on Expedia to compare airlines and find the most affordable carrier that'll take you from STL to PCT. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from Lambert-St. Louis Intl. Airport (STL) to Princeton, NJ (PCT)?
You'll need to take a flight with a layover if you're traveling from Lambert-St. Louis Intl. Airport (STL) to Princeton, NJ (PCT). There are no daily direct flights on this route. However, just filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from STL to PCT?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change 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 Lambert-St. Louis Intl. Airport (STL) to Princeton, NJ (PCT)?
Select a flight from Lambert-St. Louis Intl. Airport (STL) to Princeton, NJ (PCT) that leaves before 3 PM to reduce the risk of cancellations and delays. Departures after this time have a 22% higher chance of being canceled, on average.**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.
What airports do you fly into for Princeton from Lambert-St. Louis Intl. Airport (STL)?
Lambert-St. Louis Intl. Airport (STL) offers direct flights to Princeton. These are a few of the airports you can fly to without stopovers:

  • LaGuardia Airport (LGA)
  • Liberty Intl. Airport (EWR)
  • Philadelphia Intl. Airport (PHL)

Is it cheaper to buy a plane ticket from Lambert-St. Louis Intl. Airport (STL) to Princeton, NJ (PCT) last-minute?
Booking your ticket from STL to PCT just before your trip is typically more expensive. But if there's some wiggle room with your travel dates and times, you could score a cheap last-minute fare.
Is it cheaper to book a STL to PCT flight and hotel package?
Compared with arranging flights and hotels separately, booking a STL to PCT flight and hotel package with Expedia could result in significant savings. Better yet, managing everything in one place will take the stress out of travel planning. Just secure your flights and select from our wide range of stays, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from Lambert-St. Louis Intl. Airport (STL) to Princeton, NJ (PCT)?
If you reserved your STL to PCT flight within 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 have, 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 more details.

Travel information

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Princeton
Distance
843 mi

Book with confidence

Book with confidence

St. Louis to Princeton Flights

The cheapest times to fly from St. Louis to Princeton

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

 

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

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

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 Princeton 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 Princeton 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 Princeton 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 Princeton Flights

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*Available to One Key members.