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Cheap flights from St. Louis to Pasco from $338

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from St. Louis to Pasco departing on 12/20. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from St. Louis to Pasco

Cheap round-trip flights

Enter your travel dates to find the best prices.
Delta Logo
2:21 pm - 11:01 pmSTL-PSC
10h 40m2 stops
Delta Logo
5:03 pm - 12:46 amPSC-STL
5h 43m1 stop
$357Delta
Find Deal
Thu, Nov 13 - Sun, Nov 16
Delta Logo
6:34 am - 4:23 pmSTL-PSC
11h 49m2 stops
Delta Logo
1:00 pm - 12:46 amPSC-STL
9h 46m2 stops
$363Delta
Find Deal
Thu, Nov 13 - Sun, Nov 16
Alaska Airlines Logo
4:14 pm - 8:51 pmSTL-PSC
6h 37m1 stop
Alaska Airlines Logo
8:21 am - 11:59 pmPSC-STL
13h 38m1 stop
$375Alaska Airlines
Find Deal
Thu, Nov 13 - Sun, Nov 16
Alaska Airlines Logo
5:26 pm - 12:17 amSTL-PSC
8h 51m1 stop
Alaska Airlines Logo
6:18 pm - 1:54 pmPSC-STL
17h 36m1 stop
$410Alaska Airlines
Find Deal
Thu, Dec 18 - Sun, Jan 11
Delta Logo
6:15 am - 12:13 pmSTL-PSC
7h 58m1 stop
Delta Logo
6:30 am - 4:50 pmPSC-STL
8h 20m1 stop
$425Delta
Find Deal
Thu, Dec 18 - Sun, Jan 11
Delta Logo
6:40 am - 5:01 pmSTL-PSC
12h 21m2 stops
Delta Logo
1:00 pm - 12:46 amPSC-STL
9h 46m2 stops
$443Delta
Find Deal
Sun, Nov 9 - Sun, Nov 16
Delta Logo
6:40 am - 5:01 pmSTL-PSC
12h 21m2 stops
Delta Logo
5:03 pm - 12:46 amPSC-STL
5h 43m1 stop
$448Delta
Find Deal
Sun, Nov 9 - Sun, Nov 16
Alaska Airlines Logo
7:00 am - 9:13 amSTL-PSC
28h 13m1 stop
Alaska Airlines Logo
5:46 am - 11:54 pmPSC-STL
16h 08m1 stop
$454Alaska Airlines
Find Deal
Mon, Nov 24 - Mon, Dec 1
United Airlines Logo
9:00 am - 8:59 pmSTL-PSC
13h 59m1 stop
United Airlines Logo
5:05 am - 5:39 pmPSC-STL
10h 34m2 stops
$622United Airlines
Find Deal
Tue, Oct 28 - Sat, Nov 1
United Airlines Logo
11:05 am - 8:59 pmSTL-PSC
11h 54m2 stops
United Airlines Logo
5:05 am - 5:39 pmPSC-STL
10h 34m2 stops
$649United Airlines
Find Deal
Tue, Oct 28 - Sat, Nov 1

Delta flights from St. Louis to Pasco

Our best Delta deals on St. Louis to Pasco flight tickets
Delta
Nov 13
STL2:21 pmLambert-St Louis
10h 40m
2 stops
PSC11:01 pmPasco Tri Cities
Nov 16
PSC5:03 pmPasco Tri Cities
5h 43m
1 stop
STL12:46 amLambert-St Louis
$357
Find similar
Delta
Nov 13
STL6:34 amLambert-St Louis
11h 49m
2 stops
PSC4:23 pmPasco Tri Cities
Nov 16
PSC1:00 pmPasco Tri Cities
9h 46m
2 stops
STL12:46 amLambert-St Louis
$363
Find similar
Delta
Dec 18
STL6:15 amLambert-St Louis
7h 58m
1 stop
PSC12:13 pmPasco Tri Cities
Jan 11
PSC6:30 amPasco Tri Cities
8h 20m
1 stop
STL4:50 pmLambert-St Louis
$425
Find similar

Alaska Airlines flights from St. Louis to Pasco

Our best Alaska Airlines deals on St. Louis to Pasco flight tickets
Alaska Airlines
Nov 13
STL4:14 pmLambert-St Louis
6h 37m
1 stop
PSC8:51 pmPasco Tri Cities
Nov 16
PSC8:21 amPasco Tri Cities
13h 38m
1 stop
STL11:59 pmLambert-St Louis
$375
Find similar
Alaska Airlines
Dec 18
STL5:26 pmLambert-St Louis
8h 51m
1 stop
PSC12:17 amPasco Tri Cities
Jan 11
PSC6:18 pmPasco Tri Cities
17h 36m
1 stop
STL1:54 pmLambert-St Louis
$410
Find similar
Alaska Airlines
Nov 24
STL7:00 amLambert-St Louis
28h 13m
1 stop
PSC9:13 amPasco Tri Cities
Dec 1
PSC5:46 amPasco Tri Cities
16h 08m
1 stop
STL11:54 pmLambert-St Louis
$454
Find similar

momondo 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, momondo users made 832,500 searches. Data last updated October 14, 2025.
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

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 11/13

2:21 pm-11:01 pm

2 stops10h 40m

Pasco Tri Cities

Sun 11/16

5:03 pm-12:46 am

1 stop5h 43m

$357

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 11/13

6:34 am-4:23 pm

2 stops11h 49m

Pasco Tri Cities

Sun 11/16

1:00 pm-12:46 am

2 stops9h 46m

$363

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 11/13

4:14 pm-8:51 pm

1 stop6h 37m

Pasco Tri Cities

Sun 11/16

8:21 am-11:59 pm

1 stop13h 38m

$375

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 12/18

5:26 pm-12:17 am

1 stop8h 51m

Pasco Tri Cities

Sun 1/11

6:18 pm-1:54 pm

1 stop17h 36m

$410

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Thu 12/18

6:15 am-12:13 pm

1 stop7h 58m

Pasco Tri Cities

Sun 1/11

6:30 am-4:50 pm

1 stop8h 20m

$425

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Sun 11/9

6:40 am-5:01 pm

2 stops12h 21m

Pasco Tri Cities

Sun 11/16

1:00 pm-12:46 am

2 stops9h 46m

$443

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Sun 11/9

6:40 am-5:01 pm

2 stops12h 21m

Pasco Tri Cities

Sun 11/16

5:03 pm-12:46 am

1 stop5h 43m

$448

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Mon 11/24

7:00 am-9:13 am

1 stop28h 13m

Pasco Tri Cities

Mon 12/1

5:46 am-11:54 pm

1 stop16h 08m

$454

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Tue 10/28

9:00 am-8:59 pm

1 stop13h 59m

Pasco Tri Cities

Sat 11/1

5:05 am-5:39 pm

2 stops10h 34m

$622

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Tue 10/28

11:05 am-8:59 pm

2 stops11h 54m

Pasco Tri Cities

Sat 11/1

5:05 am-5:39 pm

2 stops10h 34m

$649

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 17 resultsSorted by cheapest first
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See travel insights to Pasco from

How to get the cheapest flight ticket from St. Louis to Pasco

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Pasco?

The month of May is, on average, the cheapest month to fly to Pasco from St. Louis, with most prices found around $392. The month of July is another great option to travel to Pasco, with average flight prices from St. Louis averaging around $412.

What is the cheapest day to depart on your flight to Pasco?

The cheapest day to depart from St. Louis to Pasco is on a Wednesday. Travelers who choose to depart for Pasco on a Wednesday will often find tickets for as low as $414. Be sure to avoid booking your departure on a Thursday as prices are generally higher than usual. According to our data, the average ticket price to Pasco on Thursday is $657.

What is the cheapest time of day to depart on your flight to Pasco?

The cheapest time of day to fly to Pasco is in the morning when flights can be purchased for as low as $465. If you have a flexible travel schedule, then try to avoid flying in the evening when prices are $628 on average. Flights to Pasco from St. Louis in the evening are generally more expensive because this time of day is more convenient for travelers’ schedules.

When to book flights from St. Louis to Pasco

Are you open to changing your travel dates? Check out the ideal times to fly from St. Louis to Pasco according to our flight data. Find out which month and days have the cheapest flights.
Estimated round-trip price

Cheap St. Louis to Pasco (STL to PSC) flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from St. Louis to Pasco

Direct flights

None
There are no direct flights from St. Louis to Pasco. There are no popular flight routes from St. Louis to Pasco.
Search flight deals

  • How far is Lambert-St Louis to Pasco Tri Cities by plane?

    Lambert-St Louis and Pasco Tri Cities are 1553.5 mi apart from one another. In terms of flight time, this usually takes a little over 6h 37m.

  • When did momondo last update prices for flights from Lambert-St Louis Airport to Pasco Tri Cities Airport?

    Prices for flights from Lambert-St Louis Airport to Pasco Tri Cities Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from Lambert-St Louis Airport to Pasco Tri Cities Airport?

  • How old do you have to be to fly from Lambert-St Louis Airport to Pasco Tri Cities Airport?

    The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Lambert-St Louis Airport to Pasco Tri Cities Airport.

  • What documentation or ID do you need to fly to Pasco Tri Cities Airport?

    The travel and health documents you'll need for your trip to Pasco Tri Cities Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Pasco Tri Cities Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular airline from St. Louis to Pasco?

Best airlines flying from St. Louis to Pasco

Compare and see reviews for airlines that fly from St. Louis to Pasco with momondo
Airline
Rating
Free Cancellation
Price
United AirlinesPriceFrom $323Free CancellationRating
7.4
8,976 reviews
Search United Airlines flights
DeltaPriceFrom $352Free CancellationRating
7.9
7,975 reviews
Search Delta flights

Traveling to a place near Pasco?

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

Why use momondo?

Why should I use momondo to find a flight deal from St. Louis to Pasco?

It is quick and easy to find St. Louis to Pasco flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Pasco that suits you.

Can I find flights from St. Louis to Pasco with flexible booking policies on momondo?

Yes. momondo allows you to filter the results for St. Louis to Pasco flights to just show those with flexible booking policies.

How can momondo help me find flights from St. Louis to Pasco?

momondo provides multiple filters to help you find the best flight to Pasco from St. Louis. Filter by price, airline, airports, cabin, aircraft, payment method, number of stops and more.

I’m not ready to book a flight from St. Louis to Pasco right now. Can momondo alert me if prices change?

Yes. momondo can track prices for St. Louis to Pasco flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

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