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Cheap flights from Pasco to St. Louis from $376

This is the cheapest round-trip flight price found by a momondo user in the last 72 hours by searching for a flight from Pasco to St. Louis departing on 1/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

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Find the cheapest flights from Pasco to St. Louis

Cheap round-trip flights

Enter your travel dates to find the best prices.
Alaska Airlines Logo
8:27 am - 1:54 pm
PSC
-
STL
27h 27m1 stop
Alaska Airlines Logo
2:50 pm - 9:03 am
STL
-
PSC
20h 13m1 stop
$376Alaska Airlines
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
6:05 am - 11:59 pm
PSC
-
STL
15h 54m2 stops
United Airlines Logo
8:45 am - 1:46 pm
STL
-
PSC
7h 01m1 stop
$438United Airlines
Sat, Jan 24 - Tue, Jan 27
United Airlines Logo
5:00 am - 7:27 pm
PSC
-
STL
12h 27m2 stops
United Airlines Logo
9:57 am - 9:10 pm
STL
-
PSC
13h 13m2 stops
$443United Airlines
Sat, Jan 24 - Tue, Jan 27
Alaska Airlines Logo
8:27 am - 11:59 pm
PSC
-
STL
13h 32m2 stops
Alaska Airlines Logo
2:50 pm - 8:57 pm
STL
-
PSC
8h 07m1 stop
$448Alaska Airlines
Sat, Jan 24 - Tue, Jan 27
Alaska Airlines Logo
8:27 am - 11:59 pm
PSC
-
STL
13h 32m2 stops
Alaska Airlines Logo
11:05 am - 8:57 pm
STL
-
PSC
11h 52m2 stops
$453Alaska Airlines
Sat, Jan 24 - Tue, Jan 27
Multiple Airlines Logo
3:30 pm - 4:24 pm
PSC
-
STL
22h 54m1 stop
Multiple Airlines Logo
10:10 pm - 8:21 am
STL
-
PSC
12h 11m1 stop
$506Multiple Airlines
Wed, Dec 24 - Sun, Dec 28
Multiple Airlines Logo
3:30 pm - 9:40 am
PSC
-
STL
16h 10m2 stops
Multiple Airlines Logo
10:10 pm - 8:21 am
STL
-
PSC
12h 11m1 stop
$605Multiple Airlines
Wed, Dec 24 - Sun, Dec 28
Multiple Airlines Logo
3:30 pm - 10:56 am
PSC
-
STL
17h 26m2 stops
Multiple Airlines Logo
11:51 am - 8:21 am
STL
-
PSC
22h 30m2 stops
$656Multiple Airlines
Wed, Dec 24 - Sun, Dec 28
Delta Logo
7:00 am - 3:03 pm
PSC
-
STL
6h 03m1 stop
Delta Logo
3:43 pm - 8:54 pm
STL
-
PSC
7h 11m1 stop
$776Delta
Thu, Dec 25 - Mon, Dec 29
Delta Logo
7:00 am - 7:04 pm
PSC
-
STL
10h 04m2 stops
Delta Logo
3:43 pm - 8:54 pm
STL
-
PSC
7h 11m1 stop
$781Delta
Thu, Dec 25 - Mon, Dec 29

Delta flights from Pasco to St. Louis

Our best Delta deals on Pasco to St. Louis flight tickets
Delta
Dec 19
PSC5:03 pmPasco Tri Cities
5h 51m
1 stop
STL12:54 amLambert-St Louis
Dec 21
STL3:43 pmLambert-St Louis
7h 11m
1 stop
PSC8:54 pmPasco Tri Cities
$743
Find similar
Delta
Dec 19
PSC5:03 pmPasco Tri Cities
5h 51m
1 stop
STL12:54 amLambert-St Louis
Dec 21
STL2:18 pmLambert-St Louis
10h 50m
2 stops
PSC11:08 pmPasco Tri Cities
$748
Find similar
Delta
Dec 25
PSC7:00 amPasco Tri Cities
6h 03m
1 stop
STL3:03 pmLambert-St Louis
Dec 29
STL3:43 pmLambert-St Louis
7h 11m
1 stop
PSC8:54 pmPasco Tri Cities
$776
Find similar

Alaska Airlines flights from Pasco to St. Louis

Our best Alaska Airlines deals on Pasco to St. Louis flight tickets
Alaska Airlines
Jan 24
PSC8:27 amPasco Tri Cities
27h 27m
1 stop
STL1:54 pmLambert-St Louis
Jan 27
STL2:50 pmLambert-St Louis
20h 13m
1 stop
PSC9:03 amPasco Tri Cities
$376
Find similar
Alaska Airlines
Jan 24
PSC8:27 amPasco Tri Cities
13h 32m
2 stops
STL11:59 pmLambert-St Louis
Jan 27
STL2:50 pmLambert-St Louis
8h 07m
1 stop
PSC8:57 pmPasco Tri Cities
$448
Find similar
Alaska Airlines
Jan 24
PSC8:27 amPasco Tri Cities
13h 32m
2 stops
STL11:59 pmLambert-St Louis
Jan 27
STL11:05 amLambert-St Louis
11h 52m
2 stops
PSC8:57 pmPasco Tri Cities
$453
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from Pasco to St. Louis 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 December 11, 2025.
Use the filters below to find and compare flights from Pasco to St. Louis that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

Sat 1/24

8:27 am-1:54 pm

1 stop27h 27m

Lambert-St Louis

Tue 1/27

2:50 pm-9:03 am

1 stop20h 13m

$376

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

Sat 1/24

6:05 am-11:59 pm

2 stops15h 54m

Lambert-St Louis

Tue 1/27

8:45 am-1:46 pm

1 stop7h 01m

$438

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

Sat 1/24

5:00 am-7:27 pm

2 stops12h 27m

Lambert-St Louis

Tue 1/27

9:57 am-9:10 pm

2 stops13h 13m

$443

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

Sat 1/24

8:27 am-11:59 pm

2 stops13h 32m

Lambert-St Louis

Tue 1/27

2:50 pm-8:57 pm

1 stop8h 07m

$448

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

Sat 1/24

8:27 am-11:59 pm

2 stops13h 32m

Lambert-St Louis

Tue 1/27

11:05 am-8:57 pm

2 stops11h 52m

$453

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

Wed 12/24

3:30 pm-4:24 pm

1 stop22h 54m

Lambert-St Louis

Sun 12/28

10:10 pm-8:21 am

1 stop12h 11m

$506

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

Wed 12/24

3:30 pm-9:40 am

2 stops16h 10m

Lambert-St Louis

Sun 12/28

10:10 pm-8:21 am

1 stop12h 11m

$605

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

Wed 12/24

3:30 pm-10:56 am

2 stops17h 26m

Lambert-St Louis

Sun 12/28

11:51 am-8:21 am

2 stops22h 30m

$656

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

Thu 12/25

7:00 am-3:03 pm

1 stop6h 03m

Lambert-St Louis

Mon 12/29

3:43 pm-8:54 pm

1 stop7h 11m

$776

PascoSt. Louis

PSC - STL

PSCSTL

Pasco Tri Cities

Thu 12/25

7:00 am-7:04 pm

2 stops10h 04m

Lambert-St Louis

Mon 12/29

3:43 pm-8:54 pm

1 stop7h 11m

$781

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted by cheapest first
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See travel insights to St. Louis from

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

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 St. Louis?

In general, September is the cheapest month to fly from Pasco to St. Louis. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $229. The month of January is another great option to travel to St. Louis, with average flight prices from Pasco averaging around $330.

What is the cheapest day to depart on your flight to St. Louis?

The cheapest day to depart on your flight to St. Louis is on a Thursday when prices can be found for as low as $453. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Monday because tickets tend to average around $768. These prices are subject to change though, so be sure to set up a Price Alert for flights to St. Louis.

What is the cheapest time of day to depart on your flight to St. Louis?

Flying to St. Louis from Pasco at noon is the least expensive time of day to depart. momondo users have found prices as low as $505 when looking at flights departing at noon. In the afternoon is when there is more demand to fly to St. Louis, so prices are often more expensive at around $588 per ticket.

Can stopping save me money on Pasco to St. Louis flights?

You could potentially save up to 23% on your flight if you consider stops on a Pasco to St. Louis flight.

When to book flights from Pasco to St. Louis

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

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

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

Fastest flight time

7h 32m

Direct flights

None
The fastest flight from Pasco to St. Louis takes 7h 32m
There are no direct flights from Pasco to St. Louis. There are no popular flight routes from Pasco to St. Louis.
Search flight deals

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

    There are 1553.5 mi between Pasco Tri Cities and Lambert-St Louis. A reasonable flight in good conditions will take 7h 32m.

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

    Prices for flights from Pasco Tri Cities Airport to Lambert-St Louis Airport refresh daily.

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

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

    Although the minimum age for a child to fly alone is five, airlines that offer an unaccompanied minor (UMNR) service may have their own age limits, which could be impacted by factors such as flight length, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from Pasco Tri Cities Airport to Lambert-St Louis Airport.

  • What documentation or ID do you need to fly to Lambert-St Louis Airport?

    The travel and health documents you'll need for your trip to Lambert-St Louis 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 Lambert-St Louis 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 Pasco to St. Louis?

Best airlines flying from Pasco to St. Louis

Compare and see reviews for airlines that fly from Pasco to St. Louis with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $268Free CancellationRating
7.9
8,008 reviews
Search Delta flights

Traveling to a place near St. Louis?

Book flights to St. Louis if you plan to visit one of these locations
St. Charles
Chesterfield
Hermann
Fairview Heights
Maryland Heights
O'Fallon
Florissant
Fenton
Wentzville
St. Peters
Collinsville
Alton
Farmington
Festus
Clayton
Glencoe
Edwardsville
Eureka
Litchfield
Shrewsbury

Why use momondo?

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

We help find the flight that best suits your needs, momondo compares prices from hundreds of airlines and travel agents and helps you filter them to find the best flight from Pasco to St. Louis for you.

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

Yes. momondo enables you to select and highlight flights to St. Louis from Pasco with this policy.

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

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Pasco to St. Louis.

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

Of course. momondo tracks the price of Pasco to St. Louis flights. All you need is a valid email address and we will do the rest; it is that quick and easy.

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