What is the cheapest airline that flies from Lambert-St Louis to Pasco Tri Cities?

Delta is the most popular carrier operating from Lambert-St Louis to Pasco Tri Cities

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 August 2026.

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.

$425 Cheap Flights from St. Louis to Pasco in 2026

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Pasco

Round-trip

One-way

Last minute

Cheap round-trip flights

Enter your travel dates to find the best prices.

6:15 am - 2:45 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

10h 30m2 stops Minneapolis St Paul Seattle/Tacoma Intl

5:25 am - 5:37 pmPSC Pasco Tri Cities-STL Lambert-St Louis

10h 12m2 stops Seattle/Tacoma Intl Salt Lake City

$425Delta

Thu, Sep 10 - Wed, Sep 16

3:24 pm - 8:55 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

7h 31m1 stop Seattle/Tacoma Intl

6:00 am - 2:26 pmPSC Pasco Tri Cities-STL Lambert-St Louis

6h 26m1 stop Seattle/Tacoma Intl

$435Alaska Airlines

Sat, Feb 6 - Tue, Feb 9

6:08 pm - 10:48 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

6h 40m1 stop Portland

4:00 pm - 5:10 pmPSC Pasco Tri Cities-STL Lambert-St Louis

23h 10m1 stop Portland

$435Alaska Airlines

Wed, Sep 16 - Tue, Sep 22

6:29 am - 1:27 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

8h 58m1 stop Seattle/Tacoma Intl

5:20 am - 5:10 pmPSC Pasco Tri Cities-STL Lambert-St Louis

9h 50m1 stop Portland

$435Alaska Airlines

Wed, Sep 16 - Tue, Sep 22

8:00 am - 2:51 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

8h 51m1 stop Phoenix Sky Harbor Intl

5:05 am - 7:07 pmPSC Pasco Tri Cities-STL Lambert-St Louis

12h 02m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

$440American Airlines

Wed, Sep 16 - Tue, Sep 22

5:43 am - 2:51 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

11h 08m2 stops Dallas/Fort Worth Phoenix Sky Harbor Intl

5:05 am - 7:07 pmPSC Pasco Tri Cities-STL Lambert-St Louis

12h 02m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

$445American Airlines

Wed, Sep 16 - Tue, Sep 22

6:15 am - 2:45 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

10h 30m2 stops Minneapolis St Paul Seattle/Tacoma Intl

5:23 pm - 12:44 amPSC Pasco Tri Cities-STL Lambert-St Louis

5h 21m1 stop Salt Lake City

$467Delta

Thu, Sep 10 - Wed, Sep 16

9:00 am - 12:54 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

5h 54m1 stop Denver Intl

12:54 pm - 8:38 pmPSC Pasco Tri Cities-STL Lambert-St Louis

5h 44m1 stop Denver Intl

$473United Airlines

Sat, Aug 22 - Wed, Sep 9

6:15 am - 2:45 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

10h 30m2 stops Minneapolis St Paul Seattle/Tacoma Intl

5:25 am - 5:37 pmPSC Pasco Tri Cities-STL Lambert-St Louis

10h 12m2 stops Seattle/Tacoma Intl Salt Lake City

$484Delta

Wed, Sep 16 - Tue, Sep 22

5:00 pm - 10:15 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

7h 15m1 stop Salt Lake City

12:36 pm - 11:16 pmPSC Pasco Tri Cities-STL Lambert-St Louis

8h 40m2 stops Seattle/Tacoma Intl Minneapolis St Paul

$507Delta

Sat, Aug 22 - Wed, Sep 9

Save money when you book flights with momondo

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Not ready to book? to track prices.

Search flight deals

Delta flights from St. Louis to Pasco

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

Delta

Sep 10

STL6:15 amLambert-St Louis

10h 30m

2 stops

PSC2:45 pmPasco Tri Cities

Sep 16

PSC5:25 amPasco Tri Cities

10h 12m

2 stops

STL5:37 pmLambert-St Louis

$425

Delta

Sep 16

STL6:15 amLambert-St Louis

10h 30m

2 stops

PSC2:45 pmPasco Tri Cities

Sep 22

PSC5:25 amPasco Tri Cities

10h 12m

2 stops

STL5:37 pmLambert-St Louis

$447

Delta

Sep 10

STL6:15 amLambert-St Louis

10h 30m

2 stops

PSC2:45 pmPasco Tri Cities

Sep 16

PSC5:23 pmPasco Tri Cities

5h 21m

1 stop

STL12:44 amLambert-St Louis

$467

United Airlines flights from St. Louis to Pasco

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

United Airlines

Aug 22

STL9:00 amLambert-St Louis

5h 54m

1 stop

PSC12:54 pmPasco Tri Cities

Sep 9

PSC12:54 pmPasco Tri Cities

5h 44m

1 stop

STL8:38 pmLambert-St Louis

$473

United Airlines

Oct 2

STL8:00 amLambert-St Louis

14h 40m

2 stops

PSC8:40 pmPasco Tri Cities

Oct 10

PSC5:05 amPasco Tri Cities

5h 35m

1 stop

STL12:40 pmLambert-St Louis

$486

United Airlines

Sep 10

STL10:53 amLambert-St Louis

11h 44m

2 stops

PSC8:37 pmPasco Tri Cities

Sep 13

PSC5:15 amPasco Tri Cities

5h 25m

1 stop

STL12:40 pmLambert-St Louis

$532

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Thu 9/10

6:15 am-2:45 pm

2 stops10h 30m

Pasco Tri Cities

Wed 9/16

5:25 am-5:37 pm

2 stops10h 12m

$425

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Sat 2/6

3:24 pm-8:55 pm

1 stop7h 31m

Pasco Tri Cities

Tue 2/9

6:00 am-2:26 pm

1 stop6h 26m

$435

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Wed 9/16

6:08 pm-10:48 pm

1 stop6h 40m

Pasco Tri Cities

Tue 9/22

4:00 pm-5:10 pm

1 stop23h 10m

$435

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Wed 9/16

6:29 am-1:27 pm

1 stop8h 58m

Pasco Tri Cities

Tue 9/22

5:20 am-5:10 pm

1 stop9h 50m

$435

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Wed 9/16

8:00 am-2:51 pm

1 stop8h 51m

Pasco Tri Cities

Tue 9/22

5:05 am-7:07 pm

2 stops12h 02m

$440

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Wed 9/16

5:43 am-2:51 pm

2 stops11h 08m

Pasco Tri Cities

Tue 9/22

5:05 am-7:07 pm

2 stops12h 02m

$445

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Thu 9/10

6:15 am-2:45 pm

2 stops10h 30m

Pasco Tri Cities

Wed 9/16

5:23 pm-12:44 am

1 stop5h 21m

$467

Quickest round-trip

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Sat 8/22

9:00 am-12:54 pm

1 stop5h 54m

Pasco Tri Cities

Wed 9/9

12:54 pm-8:38 pm

1 stop5h 44m

$473

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Wed 9/16

6:15 am-2:45 pm

2 stops10h 30m

Pasco Tri Cities

Tue 9/22

5:25 am-5:37 pm

2 stops10h 12m

$484

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Sat 8/22

5:00 pm-10:15 pm

1 stop7h 15m

Pasco Tri Cities

Wed 9/9

12:36 pm-11:16 pm

2 stops8h 40m

$507

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 13 resultsSorted 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 June is, on average, the cheapest month to fly to Pasco from St. Louis, with most prices found around $0. The month of January is another great option to travel to Pasco, with average flight prices from St. Louis averaging around $0.

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	5h 54m
Direct flights	None

The fastest flight from St. Louis to Pasco takes 5h 54m

There are no direct flights from St. Louis to Pasco. There are no popular flight routes from St. Louis to Pasco.

Search flight deals

Frequently asked questions about flying from St. Louis to Pasco

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 5h 54m.
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 August 2026.
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 Alaska Airlines, representing 57% of all bookings. The subsequent popular airline is Delta at 43%.

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
Alaska Airlines	PriceFrom $350	Free Cancellation	Rating 7.9 12,803 reviews		Search Alaska Airlines flights
Delta	PriceFrom $398	Free Cancellation	Rating 7.8 8,504 reviews		Search Delta flights

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.