What airlines fly to Pasco?

Delta, United Airlines and Alaska Airlines are the top three most popular airlines that fly to Pasco from St. Louis according to our data. Delta is the first choice among our users, with 42% of people opting to fly with this airline when traveling to Pasco. Keep in mind that there are 3 different airlines that fly to Pasco on a routine basis, so you have a few additional options to choose from.

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?

The number of operators available for flights from Lambert-St Louis Airport to Pasco Tri Cities Airport is 2 as of December 2025.

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.

$305 Cheap Flights from St. Louis to Pasco in 2025/26

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Find the cheapest flights from St. Louis to Pasco

Round-trip

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Cheap round-trip flights

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2:50 pm - 12:44 pm

STL

PSC

23h 54m1 stop

8:27 am - 1:54 pm

PSC

STL

27h 27m1 stop

$396Alaska Airlines

Wed, Jan 21 - Sat, Jan 24

2:50 pm - 12:44 pm

STL

PSC

23h 54m1 stop

8:27 am - 1:54 pm

PSC

STL

27h 27m1 stop

$424Alaska Airlines

Wed, Jan 21 - Sat, Jan 24

8:45 am - 1:46 pm

STL

PSC

7h 01m1 stop

5:00 am - 7:27 pm

PSC

STL

12h 27m2 stops

$438United Airlines

Wed, Jan 21 - Sat, Jan 24

9:57 am - 9:10 pm

STL

PSC

13h 13m2 stops

5:00 am - 4:03 pm

PSC

STL

9h 03m2 stops

$443United Airlines

Wed, Jan 21 - Sat, Jan 24

2:50 pm - 8:57 pm

STL

PSC

8h 07m1 stop

8:27 am - 11:59 pm

PSC

STL

13h 32m2 stops

$448Alaska Airlines

Wed, Jan 21 - Sat, Jan 24

2:50 pm - 12:37 pm

STL

PSC

23h 47m1 stop

1:23 pm - 1:54 pm

PSC

STL

22h 31m1 stop

$464Alaska Airlines

Fri, Jan 16 - Mon, Jan 19

9:25 am - 8:57 pm

STL

PSC

13h 32m2 stops

8:27 am - 11:59 pm

PSC

STL

13h 32m2 stops

$485Alaska Airlines

Wed, Jan 21 - Sat, Jan 24

3:40 pm - 7:56 pm

STL

PSC

6h 16m1 stop

1:00 pm - 11:25 pm

PSC

STL

8h 25m2 stops

$486Delta

Fri, Jan 16 - Mon, Jan 19

2:38 pm - 7:58 pm

STL

PSC

7h 20m1 stop

2:47 pm - 11:59 pm

PSC

STL

7h 12m1 stop

$519American Airlines

Fri, Jan 16 - Mon, Jan 19

7:04 am - 12:20 am

STL

PSC

19h 16m2 stops

6:19 pm - 11:59 pm

PSC

STL

27h 40m2 stops

$636Alaska Airlines

Fri, Jan 16 - Mon, Jan 19

Delta flights from St. Louis to Pasco

Our best Delta deals on St. Louis to Pasco flight tickets

Delta

Jan 16

STL3:40 pmLambert-St Louis

6h 16m

1 stop

PSC7:56 pmPasco Tri Cities

Jan 19

PSC1:00 pmPasco Tri Cities

8h 25m

2 stops

STL11:25 pmLambert-St Louis

$486

Find similar

Delta

Dec 18

STL6:15 amLambert-St Louis

12h 07m

2 stops

PSC4:22 pmPasco Tri Cities

Jan 11

PSC1:00 pmPasco Tri Cities

8h 25m

2 stops

STL11:25 pmLambert-St Louis

$524

Find similar

Delta

Dec 18

STL2:38 pmLambert-St Louis

11h 08m

2 stops

PSC11:46 pmPasco Tri Cities

Jan 11

PSC1:00 pmPasco Tri Cities

8h 25m

2 stops

STL11:25 pmLambert-St Louis

$540

Find similar

American Airlines flights from St. Louis to Pasco

Our best American Airlines deals on St. Louis to Pasco flight tickets

American Airlines

Jan 16

STL2:38 pmLambert-St Louis

7h 20m

1 stop

PSC7:58 pmPasco Tri Cities

Jan 19

PSC2:47 pmPasco Tri Cities

7h 12m

1 stop

STL11:59 pmLambert-St Louis

$519

Find similar

American Airlines

Dec 18

STL8:00 amLambert-St Louis

7h 49m

1 stop

PSC1:49 pmPasco Tri Cities

Jan 11

PSC2:47 pmPasco Tri Cities

7h 12m

1 stop

STL11:59 pmLambert-St Louis

$553

Find similar

Fly from

Fly to

Route

Depart

Return

Price

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 1/21

2:50 pm-12:44 pm

1 stop23h 54m

Pasco Tri Cities

Sat 1/24

8:27 am-1:54 pm

1 stop27h 27m

$396

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 1/21

2:50 pm-12:44 pm

1 stop23h 54m

Pasco Tri Cities

Sat 1/24

8:27 am-1:54 pm

1 stop27h 27m

$424

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 1/21

8:45 am-1:46 pm

1 stop7h 01m

Pasco Tri Cities

Sat 1/24

5:00 am-7:27 pm

2 stops12h 27m

$438

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 1/21

9:57 am-9:10 pm

2 stops13h 13m

Pasco Tri Cities

Sat 1/24

5:00 am-4:03 pm

2 stops9h 03m

$443

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 1/21

2:50 pm-8:57 pm

1 stop8h 07m

Pasco Tri Cities

Sat 1/24

8:27 am-11:59 pm

2 stops13h 32m

$448

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Fri 1/16

2:50 pm-12:37 pm

1 stop23h 47m

Pasco Tri Cities

Mon 1/19

1:23 pm-1:54 pm

1 stop22h 31m

$464

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Wed 1/21

9:25 am-8:57 pm

2 stops13h 32m

Pasco Tri Cities

Sat 1/24

8:27 am-11:59 pm

2 stops13h 32m

$485

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Fri 1/16

3:40 pm-7:56 pm

1 stop6h 16m

Pasco Tri Cities

Mon 1/19

1:00 pm-11:25 pm

2 stops8h 25m

$486

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Fri 1/16

2:38 pm-7:58 pm

1 stop7h 20m

Pasco Tri Cities

Mon 1/19

2:47 pm-11:59 pm

1 stop7h 12m

$519

St. LouisPasco

STL - PSC

STLPSC

Lambert-St Louis

Fri 1/16

7:04 am-12:20 am

2 stops19h 16m

Pasco Tri Cities

Mon 1/19

6:19 pm-11:59 pm

2 stops27h 40m

$636

Flights are sorted by cheapest round-trip flights first.

Sorted by cheapest first

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

Prices

Airlines

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

Fastest flight time	6h 16m
Direct flights	None

The fastest flight from St. Louis to Pasco takes 6h 16m

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 16m.
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?
The number of operators available for flights from Lambert-St Louis Airport to Pasco Tri Cities Airport is 2 as of December 2025.
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?
momondo data reveals that the most frequently booked airline on the route from St. Louis to Pasco is Delta, representing 58% of all bookings. The subsequent popular airline is United Airlines at 42%.

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 Airlines	PriceFrom $323	Free Cancellation	Rating 7.4 9,092 reviews		Search United Airlines flights
Delta	PriceFrom $352	Free Cancellation	Rating 7.9 8,007 reviews		Search Delta flights

Kennewick

Richland

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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.

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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.

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