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$375+ 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 1/24. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PSC
Feb 5 — Feb 121
Thu 2/5
Thu 2/12
1 adult, Economy
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Cheap 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 January 6, 2026.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$375
(Alaska Airlines)

Popular in

June

Cheapest in

May
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. 9% potential increase in price ($47 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 6% potential price decrease ($30 potential savings vs. average RT price).
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Find 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 January 6, 2026.

This Alaska Airlines deal was found by Cheapflights users on 1/3. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 1/246:19 pmSTL - PSC
1 stop28h 38mAlaska Airlines
Tue 1/271:23 pmPSC - STL
1 stop22h 31mAlaska Airlines
Deal found 1/3$375
This United Airlines deal was found by Cheapflights users on 1/3. 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 1/248:30 amSTL - PSC
2 stops14h 43mUnited Airlines
Tue 1/2712:45 pmPSC - STL
1 stop6h 13mUnited Airlines
Deal found 1/3$446
This Delta deal was found by Cheapflights users on 1/4. 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.
Mon 1/193:31 pmSTL - PSC
1 stop6h 25mDelta
Fri 1/236:00 amPSC - STL
1 stop5h 48mDelta
Deal found 1/4$569
This Kiwi.com deal was found by Cheapflights users on 1/3. 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 1/81:07 pmSTL - PSC
1 stop28h 07mMultiple Airlines
Mon 1/124:04 pmPSC - STL
2 stops28h 30mMultiple Airlines
Deal found 1/3$622

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 January 6, 2026.
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

Sat 1/24

6:19 pm-8:57 pm

1 stop28h 38m

Pasco Tri Cities

Tue 1/27

1:23 pm-1:54 pm

1 stop22h 31m

$375

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Sat 1/24

8:30 am-9:13 pm

2 stops14h 43m

Pasco Tri Cities

Tue 1/27

12:45 pm-8:58 pm

1 stop6h 13m

$446

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Mon 1/19

3:31 pm-7:56 pm

1 stop6h 25m

Pasco Tri Cities

Fri 1/23

6:00 am-1:48 pm

1 stop5h 48m

$569

Flights are sorted by cheapest round-trip flights first.

Deals found on 1/3

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 January.
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.

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 January 6, 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
8,018 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

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
8,018 reviews
Delta
7.9
Good
8,018 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

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
9,132 reviews
Delta
7.9
Good
8,018 reviews

Crew

8.5

Food

7.2

Boarding

8.1

Entertainment

7.8

Comfort

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 14h 43m. Your travel time can differ by up to 13h 55m. 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 60% 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 January 6, 2026.
AirlineCheapestAverageFlexibilityOn-time
United AirlinesCheapest$323Average$442FlexibilityNo cancel feeOn-time69%
DeltaCheapest$352Average$476FlexibilityNo cancel feeOn-timeN/A

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