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Pasco

$377+ 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 5/23. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PSC
May 24 — May 311
Sun 5/24
Sun 5/31
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 April 24, 2026.

This United Airlines deal was found by Cheapflights users on 4/22. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/237:23 pm
STL
-
PSC
1 stop7h 23m
United Airlines
Sat 5/307:00 am
PSC
-
STL
1 stop9h 17m
United Airlines
Deal found 4/22$377
This Expedia deal was found by Cheapflights users on 4/20. 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 Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/284:46 pm
STL
-
PSC
1 stop9h 13m
Alaska Airlines
Sat 5/231:53 pm
PSC
-
STL
1 stop8h 01m
Alaska Airlines
Deal found 4/20$429
This Delta deal was found by Cheapflights users on 4/21. 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 5/287:59 pm
STL
-
PSC
1 stop5h 47m
Delta
Sun 5/315:00 pm
PSC
-
STL
1 stop5h 30m
Delta
Deal found 4/21$436
This Delta deal was found by Cheapflights users on 4/21. 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.
Sun 5/247:00 am
STL
-
PSC
2 stops9h 50m
Delta
Fri 5/295:00 pm
PSC
-
STL
1 stop5h 30m
Delta
Deal found 4/21$441
This Delta deal was found by Cheapflights users on 4/22. 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 5/77:59 pm
STL
-
PSC
1 stop5h 47m
Delta
Wed 6/32:46 pm
PSC
-
STL
1 stop7h 44m
Delta
Deal found 4/22$469
This Delta deal was found by Cheapflights users on 4/21. 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.
Fri 6/127:52 pm
STL
-
PSC
1 stop6h 06m
Delta
Mon 6/155:21 pm
PSC
-
STL
1 stop5h 18m
Delta
Deal found 4/21$470

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 April 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$377
(United Airlines)

One-way from

$251
(American Airlines)

Popular in

June

Cheapest in

May

Average price

$519
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
One-way flight from Lambert-St Louis to Pasco Tri Cities
Search Deals
Highest demand for flights based on searches. 16% potential increase in price ($98 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 8% potential price decrease ($41 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in April 2026
Search Deals

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 April 24, 2026.
Use the filters below to find and compare flights from St. Louis to Pasco that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Sat 5/23

7:23 pm-12:46 am

1 stop7h 23m

Pasco Tri Cities

Sat 5/30

7:00 am-6:17 pm

1 stop9h 17m

$377
Quickest round-trip

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 5/28

7:59 pm-11:46 pm

1 stop5h 47m

Pasco Tri Cities

Sun 5/31

5:00 pm-12:30 am

1 stop5h 30m

$436

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Sat 5/23

7:23 pm-12:46 am

1 stop7h 23m

Pasco Tri Cities

Fri 5/29

7:00 am-6:17 pm

1 stop9h 17m

$491

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Fri 6/12

1:59 pm-11:58 pm

2 stops11h 59m

Pasco Tri Cities

Mon 6/15

5:21 pm-12:39 am

1 stop5h 18m

$498

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 5/6

7:00 am-12:44 pm

1 stop7h 44m

Pasco Tri Cities

Sat 5/9

1:21 pm-11:59 pm

1 stop8h 38m

$501

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Tue 5/5

10:25 am-8:53 pm

2 stops12h 28m

Pasco Tri Cities

Sat 5/9

5:00 am-2:28 pm

1 stop7h 28m

$506

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/22

Sorted by cheapest first

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 April.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*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 FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on St. Louis-Pasco flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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

How much does it cost to fly round-trip from St. Louis to Pasco?

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 April 24, 2026.
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
8,450 reviews

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

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
8,450 reviews
Delta
7.9
Good
8,450 reviews

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

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
9,643 reviews
Delta
7.9
Good
8,450 reviews

Overall

7.9

Comfort

7.9

Crew

8.5

Entertainment

7.8

Food

7.2

Boarding

8.1

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?

    United Airlines and Delta can get you from St. Louis to Pasco in just under 5h 47m. Your travel time can differ by up to 1h 36m. 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 $139. Another airline that can offer you cheap pricing is United Airlines. Delta is 72% 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.

See more FAQs

Traveling to a place near Pasco?

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

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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 April 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$139Average$476FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$366Average$466FlexibilityNo cancel feeOn-time69%

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