Cheap Flights from Thermal (TRM) to St. Louis (STL)

Popular airlines from Thermal, CA (TRM-Jacqueline Cochran Regional) to St. Louis Lambert Intl. Airport (STL)

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Frequently asked questions

How much does a flight from Jacqueline Cochran Regional Airport (TRM) to Lambert-St. Louis Intl. Airport (STL) cost?
Grab a cheap one-way flight or cheap return flight from Jacqueline Cochran Regional Airport (TRM) 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 deals on this route.
What is the cheapest month to fly from Jacqueline Cochran Regional Airport (TRM) to Lambert-St. Louis Intl. Airport (STL)?
The cheapest month to fly from TRM to STL is , when there's less demand. Off-peak season is often when you'll find cheap fares for travel between these airports.
What is the cheapest airline that flies from Jacqueline Cochran Regional Airport (TRM) to Lambert-St. Louis Intl. Airport (STL)?
To find the cheapest airline flying from TRM to STL, use Expedia's filter tool. Customize your search based on what matters most to you, such as preferred carriers and cabin 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 Jacqueline Cochran Regional Airport (TRM) to Lambert-St. Louis Intl. Airport (STL)?
There are no daily direct flights departing from Jacqueline Cochran Regional Airport (TRM) to Lambert-St. Louis Intl. Airport (STL). But you can choose flights with layovers. Filter your search on Expedia to include one or more stops, and you'll be on your way before you know it.
What day of the week has the most flights from TRM to STL?
Generally you'll have the most choice when it comes to flights on a Friday. Tuesdays are often the quietest.* But this can vary depending on the airline, time of year and other factors.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Jacqueline Cochran Regional Airport (TRM) to Lambert-St. Louis Intl. Airport (STL)?
To arrive at Lambert-St. Louis Intl. Airport (STL) on schedule, book a flight that takes off from Jacqueline Cochran Regional Airport (TRM) before 3 PM. The chance of cancellations is 22% higher, on average, for departures after this time.**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 Jacqueline Cochran Regional Airport (TRM) to Lambert-St. Louis Intl. Airport (STL) last-minute?
Holding off until just before your departure to book your flight from TRM to STL often results in higher prices. Although you may find some last-minute discounts, they're not always guaranteed. Keep your travel schedule open to boost your chances of getting a bargain.
Is it cheaper to book a TRM to STL flight and hotel package?
Compared with arranging flights and hotels separately, booking a TRM to STL flight and hotel package with Expedia could result in significant savings. What's more, having it all in one place takes the hassle out of planning your trip. Simply pick your flights and select from our wide range of stays, then customize your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Jacqueline Cochran Regional Airport (TRM) to Lambert-St. Louis Intl. Airport (STL)?
Typically, you're able to reschedule or cancel your TRM to STL flight. However, there may be additional charges, especially if you made your booking over 24 hours ago. Check your itinerary for the airline's fees and policies on flight changes, or if you'd like more details, head to our Customer Service portal.

Travel information

Origin airport
Jacqueline Cochran Regional
Destination airport
Lambert-St. Louis Intl.
Distance
1475 mi

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Thermal to St. Louis Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Thermal 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 Thermal 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 Thermal to St. Louis in 2026. 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 Thermal 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 Thermal 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.

 

Thermal to St. Louis Flights

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*Available to One Key members.