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$179+ Cheap flights from St. Louis to Pasco (STL - PSC)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 7/9. Fares are subject to change and may not be available on all flights or dates of travel.
STL — PSC
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$365
(Delta)

One-way from

$179
(Alaska Airlines)

Popular in

June

Cheapest in

October

Average price

$918
From Lambert-St Louis to Pasco Tri Cities
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One-way flight from Lambert-St Louis to Pasco Tri Cities
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Highest demand for flights based on searches. 16% potential increase in price ($97 potential increase over avg. RT price).
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Cheapest flight prices on average. 8% potential price decrease ($39 potential savings vs. average RT price).
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Average for round-trip flights in June 2025
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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 June 12, 2025.

This Delta deal was found by Cheapflights users on 6/11. 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 8/217:35 amSTL - PSC
2 stops11h 00mDelta
Sun 8/245:45 amPSC - STL
1 stop5h 44mDelta
Deal found 6/11$365
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Tue 7/87:44 amSTL - PSC
1 stop7h 48mAmerican Airlines
Mon 7/142:55 pmPSC - STL
1 stop7h 33mAmerican Airlines
Deal found 6/11$389
This Alaska Airlines deal was found by Cheapflights users on 6/11. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 7/93:24 pmSTL - PSC
1 stop7h 31mAlaska Airlines
Mon 7/147:52 pmPSC - STL
1 stop20h 43mAlaska Airlines
Deal found 6/11$397
This United Airlines deal was found by Cheapflights users on 6/11. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 8/211:39 pmSTL - PSC
2 stops11h 29mUnited Airlines
Sun 8/245:30 amPSC - STL
2 stops8h 14mUnited Airlines
Deal found 6/11$435
This Hawaiian Airlines deal was found by Cheapflights users on 6/11. 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 Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 7/107:32 pmSTL - PSC
1 stop6h 27mHawaiian Airlines
Thu 7/171:30 pmPSC - STL
1 stop8h 29mHawaiian Airlines
Deal found 6/11$474

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 June 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

Thu 8/21

7:35 am-4:35 pm

2 stops11h 00m

Pasco Tri Cities

Sun 8/24

5:45 am-1:29 pm

1 stop5h 44m

$365

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Tue 7/8

7:44 am-1:32 pm

1 stop7h 48m

Pasco Tri Cities

Mon 7/14

2:55 pm-12:28 am

1 stop7h 33m

$389

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 7/9

3:24 pm-8:55 pm

1 stop7h 31m

Pasco Tri Cities

Mon 7/14

7:52 pm-6:35 pm

1 stop20h 43m

$397

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 8/21

1:39 pm-11:08 pm

2 stops11h 29m

Pasco Tri Cities

Sun 8/24

5:30 am-3:44 pm

2 stops8h 14m

$435

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 7/10

7:32 pm-11:59 pm

1 stop6h 27m

Pasco Tri Cities

Thu 7/17

1:30 pm-11:59 pm

1 stop8h 29m

$474

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 7/9

7:32 pm-11:59 pm

1 stop6h 27m

$179

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Mon 6/30

3:24 pm-8:55 pm

1 stop7h 31m

$193

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 7/9

5:37 pm-11:31 pm

2 stops7h 54m

$255

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Mon 6/30

12:28 pm-11:28 pm

2 stops13h 00m

$275

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/11

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, January is the cheapest month in which you can book a flight from St. Louis to Pasco (average of $349). Flying from St. Louis to Pasco in July is currently the most expensive (average of $482). 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 June 12, 2025.

It’s optimal to fly from St. Louis to Pasco in the morning. By choosing this option you can save up to 26% on the cost of your flight, compared to a flight in the evening.

Rainfall in Pasco by month

Plan your trip to Pasco by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Pasco ranges from 0.3 - 1.2 inches per month. January is typically the wettest month, when rainfall can reach 1.2 in. July is typically the driest time to visit Pasco when rainfall is around 0.3 in.

Temperature in Pasco by month

Plan your trip to Pasco by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Pasco, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 73.4 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 33.8 F).

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 June 12, 2025.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Delta
8.0
Very good
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
Hawaiian Airlines
7.9
Good
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
United Airlines
7.4
Good
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Entertainment

7.1

Overall

8.0

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Cheri,Jan 2025

FAT - SEA

Very friendly. I really liked that they had water for us in cartons not plastic. Impressed with Alaska Airlines, First time I had flown them

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.

  • 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 $365. Other airlines that can offer you cheap pricing are American Airlines, from $389, and Alaska Airlines, from $397. Delta is 25% cheaper than the average price of flights available within the next 90 days to this destination.

  • What are the cheapest airlines to fly from St. Louis to Pasco one-way?

    For one-way options, check prices for Alaska Airlines. According to our data, you can fly for as low as $179. Users have also found prices from $193 and $255 on Hawaiian Airlines and Delta, respectively.

  • 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, January is the cheapest month in which you can book a flight from St. Louis to Pasco (average of $349). Flying from St. Louis to Pasco in July is currently the most expensive (average of $482). 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 St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
Kennewick
Richland

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Top 3 airlines flying from St. Louis to Pasco

Discover the top 3 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$306Average$476FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$323Average$442FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$325Average$501FlexibilityNo cancel feeOn-time75%

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