Cheap Flights from St. Louis (STL) to Pasco (PSC)

Popular airlines from Lambert-St. Louis International Airport (STL) to Tri-Cities Airport (PSC)

  • Be in the know

    Get alerts if flight prices drop or rise*

  • Book smarter

    Save up to 30% on select hotels after you book a flight*

  • Earn twice

    Earn your airline miles on top of our rewards
    Sign in

Frequently asked questions

What is the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities)?
February is typically the cheapest month to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities), with average round-trip fares around 956 CAD. This is about 22% lower than the average price throughout the year. February often sees lower prices as it falls outside of peak holiday travel seasons, leading to reduced demand. Other cheap months to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities) include April and September.
How do I find cheap flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities)?
To find a cheap flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.
What is the best time to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities)?
Based on booking data from the past year, if you're looking for the best time to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities), you'll find the cheapest round-trip flights in February or April, with average prices around 956 CAD. While November is a popular month for travel on this route, offering plenty of flight options, it's not the cheapest. So, if saving money is your priority, aim for early spring.
How many flights per day from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities)?
There are approximately 24 connecting flights per day from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities). Some common connection points include Seattle - Tacoma Intl. (SEA), O'Hare Intl. (ORD), and Dallas-Fort Worth Intl. (DFW).
What is the earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities)?
The earliest flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities) typically departs at approximately 5:00 AM local time. This service is seasonal, active only in May, and is operated by American Airlines and Alaska Airlines. An early departure like this can help maximize your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.
What day of the week has the most flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities)?
For flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities), you'll generally find the most options on a Friday, with around 23 flights available. This gives you a good selection for your travel plans. Major airlines on this route include Alaska Airlines, United Airlines, and Delta Air Lines. Flight schedules are fairly consistent throughout the week, with Fridays offering only slightly more flights than other days.
What are the most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities)?
The most popular departure times for flights from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities) are in the early morning, from 6am to 9am. About 41% of passengers prefer this time. Many major carriers, including American Airlines, Delta Air Lines and Alaska Airlines, offer flights during this window. This timing works well because you can get an early start to your travel day and arrive at your destination with plenty of time left.
How long does it take to fly from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities)?
Flying from STL to PSC with a connection usually takes about 7 hours 30 minutes, traveling roughly 1,544 miles. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.
Can you fly business or first class from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities)?
Select the "Business class" and "First class" filters when looking for STL to PSC flights on Expedia. This is the easiest way to compare prices, routes and flight times for your trip.
How do I earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities) flight with Expedia?
It's easy to earn miles on a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia. *Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.
What airports do you fly into for Pasco from Lambert-St. Louis Intl. (STL)?
If you're planning to travel to Pasco from Lambert-St. Louis Intl. (STL), you can fly directly into Tri-Cities (PSC) Some flights may connect through major hubs like O'Hare Intl. (ORD), Dallas-Fort Worth Intl. (DFW), Seattle - Tacoma Intl. (SEA) before reaching Pasco. Compare routes and airports on Expedia to find the best flight options for your travel plans.
Is it cheaper to buy a plane ticket from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities) at the last minute?
Typically, booking a last minute flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.
Is it cheaper to book a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities) flight and hotel package?
Securing a St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.
Can I cancel or change the date of my flight from St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities)?
If you booked your St. Louis, MO (STL-Lambert-St. Louis Intl.) to Pasco, WA (PSC-Tri-Cities) 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 ticket 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, head to our Customer Service portal if you'd like more information.

Travel information

Origin airport
Lambert-St. Louis Intl.
Destination airport
Tri-Cities
Distance
2469 km

Book with confidence

St. Louis to Pasco Flights

The easy way to book your flights from St. Louis to Pasco 

With Expedia, it’s simple to find and book flights to Pasco from St. Louis whether you’re traveling for business or pleasure. Enter your travel dates, hit search, and choose your flight from airlines that cover this route. There are nonstop flights to Tri-Cities, too.  

Choose your preferred carrier and cabin class with the advanced search tool and select your ideal departure time. Then, if you want, you can see just nonstop or refundable flights. And if you’re traveling last minute, just enter the date to check out flights from St. Louis to Pasco today, tomorrow, or this week.  

 

Save dollars with cheap flights from Lambert-St. Louis Intl., STL to Tri-Cities, PSC 

Sort your search results by price to find great deals on your flight from St. Louis to Pasco—you get all your cheapest options first. Grab yourself a bargain now—the lowest price on flights to Pasco from St. Louis currently is just rising to .  

Here are more money-saving tips: 

  • Fly in when flight prices are normally at their lowest 
  • Book about a month to 6 weeks before you travel for the best prices to Pasco  
  • Avoid peak season and weekends when flights can cost more
  • Early morning and late-night flights are sometimes cheaper, so try varying your travel times 
  • One surefire way to save money on your flight is to book your flight and hotel together with Expedia. Sometimes, the savings are so large that the flight is basically free! 

 

Reasons to choose Expedia for your flight to Pasco from St. Louis 

Whatever your destination, budget, or reason to travel, in just one quick search, you can choose from loads of flights, airlines, and cabin classes. The filters make it quick and easy to find your ideal flights, and if you choose one of the flexible options, you won’t be charged to change your flight. So book your flight to Pasco with Expedia today.

St. Louis to Pasco Flights

Explore a world of travel with Expedia

*Available to Expedia members.