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$396+ Cheap flights from St. Louis to Pasco (STL - PSC)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 1/21. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PSC
Jan 11 — Jan 181
Sun 1/11
Sun 1/18
1 adult, Economy
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Cheap flight deals from St. Louis to Pasco

Cheapest flights from St. Louis to Pasco
Explore the most affordable flight options available from St. Louis to Pasco. Find the lowest fares from popular airlines and budget airlines, with prices last updated on December 12, 2025.

This American Airlines deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/258:00 amSTL - PSC
1 stop7h 49mAmerican Airlines
Mon 12/295:00 amPSC - STL
1 stop6h 56mAmerican Airlines
Deal found 12/10$494
This Delta deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/186:15 amSTL - PSC
1 stop7h 58mDelta
Sun 1/111:00 pmPSC - STL
2 stops8h 25mDelta
Deal found 12/11$519
This American Airlines deal was found by Cheapflights users on 12/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/188:00 amSTL - PSC
1 stop7h 49mAmerican Airlines
Sun 1/112:47 pmPSC - STL
1 stop7h 12mAmerican Airlines
Deal found 12/11$553
This Kiwi.com deal was found by Cheapflights users on 12/10. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/2510:42 amSTL - PSC
2 stops23h 39mMultiple Airlines
Mon 12/299:11 amPSC - STL
1 stop10h 14mMultiple Airlines
Deal found 12/10$595

Find flight deals from St. Louis to Pasco

Discover tips and strategies to find the most affordable flight options for your journey from St. Louis (STL) to Pasco (PSC). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated December 12, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$396
(Alaska Airlines)

Popular in

June

Cheapest in

May

Average price

$498
Provider with most accurate pricing for Lambert-St Louis-Pasco Tri Cities flight deals.
Search Deals
Provider most trusted by Cheapflights users for Lambert-St Louis-Pasco Tri Cities flights.
Search Deals
From Lambert-St Louis to Pasco Tri Cities
Search Deals
Highest demand for flights based on searches. 6% potential increase in price ($34 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($26 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Cheapflights Fare Finder

 
Customize your flight search to find flights from St. Louis to Pasco that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
Use the filters below to find and compare flights from St. Louis to Pasco that are best for you.

Fly from

St. Louis

Fly to

Pasco

Route

Depart

Return

Price

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 1/21

2:50 pm-12:44 pm

1 stop23h 54m

Pasco Tri Cities

Sat 1/24

8:27 am-1:54 pm

1 stop27h 27m

$396

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 1/21

11:20 am-9:13 pm

2 stops11h 53m

Pasco Tri Cities

Sat 1/24

6:05 am-3:37 pm

1 stop7h 32m

$438

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Fri 1/16

2:50 pm-12:37 pm

1 stop23h 47m

Pasco Tri Cities

Mon 1/19

1:23 pm-1:54 pm

1 stop22h 31m

$464

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Fri 1/16

3:40 pm-7:56 pm

1 stop6h 16m

Pasco Tri Cities

Mon 1/19

1:00 pm-11:25 pm

2 stops8h 25m

$486

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 12/25

8:00 am-1:49 pm

1 stop7h 49m

Pasco Tri Cities

Mon 12/29

5:00 am-1:56 pm

1 stop6h 56m

$494

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 12/25

10:42 am-8:21 am

2 stops23h 39m

Pasco Tri Cities

Mon 12/29

9:11 am-9:25 pm

1 stop10h 14m

$595

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/10

Compare providers for flights from St. Louis to Pasco

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from St. Louis to Pasco in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
eDreamsPrice Accuracy3 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on St. Louis-Pasco flights, users find the pricing of eDreams to be most consistent on Cheapflights vs. eDreams Users can find the same prices on St. Louis-Pasco flight deals on Cheapflights vs. eDreams >95% of the time. Price accuracy is based on data collected from St. Louis-Pasco flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on St. Louis-Pasco flights, Cheapflights users trust eDreams the most. eDreams has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for St. Louis-Pasco flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from St. Louis to Pasco

Have a flexible travel schedule? Discover the best time to fly to Pasco from St. Louis with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from St. Louis to Pasco

What is the cheapest month to book a flight from St. Louis to Pasco?

Currently, July is the cheapest month in which you can book a flight from St. Louis to Pasco (average of $189). Flying from St. Louis to Pasco in January is currently the most expensive (average of $640). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from STL to PSC?

Find hourly flight availability from St. Louis to Pasco. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated December 12, 2025.

It’s optimal to fly from St. Louis to Pasco in the morning. By choosing this option you can save up to 25% on the cost of your flight, compared to a flight in the evening.

Reviews of airlines servicing Pasco

Get insights into the airlines that provide service to Pasco. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Pasco. Reviews last updated December 12, 2025.
Get a feel of what it's like to fly with Delta and United Airlines from St. Louis to Pasco by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
Delta
7.9
Good
8,007 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.
United Airlines
7.4
Good
9,095 reviews
Delta
7.9
Good
8,007 reviews

Food

7.3

Comfort

7.9

Crew

8.5

Boarding

8.1

Entertainment

7.9

Overall

7.9

Reviews

1 / 20
6.0
Good

Jim,Nov 2025

AVL - ATL

The exit row seats without a seat in front are great for leg room but don’t have a fold out entertainment console so you’re forced to use the screen several feet in front of you (there is, at least, a remote). Best to bring a tablet loaded with entertainment or a book.

Related info for your journey

Find useful and relevant information for your journey from St. Louis to Pasco. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from St. Louis to Pasco?

    Alaska Airlines and United Airlines can get you from St. Louis to Pasco in just under 11h 53m. Your travel time can differ by up to 12h 01m. There are 1542 mi between St. Louis and Pasco. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from St. Louis to Pasco round-trip?

    Cheapflights users have booked flights from St. Louis to Pasco round-trip from $188. Another airline that can offer you cheap pricing is United Airlines. Delta is 61% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from St. Louis to Pasco that include hotel bookings?

    Yes. In addition to deals on St. Louis to Pasco flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from St. Louis to Pasco?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from St. Louis to Pasco.

  • Can I find deals for business class flights from St. Louis to Pasco?

    Yes. Cheapflights offers flight deals from St. Louis to Pasco by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from St. Louis to Pasco?

    Currently, July is the cheapest month in which you can book a flight from St. Louis to Pasco (average of $189). Flying from St. Louis to Pasco in January is currently the most expensive (average of $640). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Pasco?

Book flights to Pasco if you plan to visit one of these locations
Kennewick
Richland

Browse thousands of different options on Cheapflights for your next trip

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Top 2 airlines flying from St. Louis to Pasco

Discover the top 2 airlines that operate flights from St. Louis to Pasco. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated December 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$323Average$442FlexibilityNo cancel feeOn-time69%
DeltaCheapest$352Average$476FlexibilityNo cancel feeOn-timeN/A

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