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

American Airlines and Delta are the most popular carriers 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 November 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.

$210 Cheap Flights from St. Louis to Pasco in 2026/27

Discover deals from 900+ travel sites with momondo.

Find the cheapest flights from St. Louis to Pasco

Round-trip

One-way

Cheap round-trip flights

Enter your travel dates to find the best prices.

4:06 pm - 11:57 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

9h 51m1 stop Seattle/Tacoma Intl

6:08 am - 3:08 pmPSC Pasco Tri Cities-STL Lambert-St Louis

7h 00m1 stop Seattle/Tacoma Intl

$399Alaska Airlines

Wed, Feb 3 - Wed, Feb 10

6:03 am - 3:11 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

11h 08m2 stops Minneapolis St Paul Seattle/Tacoma Intl

7:00 am - 2:44 pmPSC Pasco Tri Cities-STL Lambert-St Louis

5h 44m1 stop Minneapolis St Paul

$414Delta

Fri, Dec 11 - Sun, Dec 13

6:10 am - 5:06 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

12h 56m2 stops Minneapolis St Paul Seattle/Tacoma Intl

7:00 am - 4:37 pmPSC Pasco Tri Cities-STL Lambert-St Louis

7h 37m1 stop Minneapolis St Paul

$414Delta

Wed, Feb 3 - Wed, Feb 10

5:05 am - 1:40 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

10h 35m2 stops Chicago O'Hare Intl Phoenix Sky Harbor Intl

5:00 am - 4:20 pmPSC Pasco Tri Cities-STL Lambert-St Louis

9h 20m2 stops Phoenix Sky Harbor Intl Dallas/Fort Worth

$419American Airlines

Wed, Feb 3 - Wed, Feb 10

2:31 pm - 7:52 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

7h 21m1 stop Phoenix Sky Harbor Intl

3:37 pm - 11:52 pmPSC Pasco Tri Cities-STL Lambert-St Louis

6h 15m1 stop Phoenix Sky Harbor Intl

$419American Airlines

Fri, Dec 11 - Sun, Dec 13

6:03 am - 3:11 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

11h 08m2 stops Minneapolis St Paul Seattle/Tacoma Intl

12:26 pm - 11:26 pmPSC Pasco Tri Cities-STL Lambert-St Louis

9h 00m2 stops Salt Lake City Minneapolis St Paul

$427Delta

Fri, Dec 11 - Sun, Dec 13

4:30 pm - 9:09 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

6h 39m1 stop Denver Intl

12:40 pm - 8:38 pmPSC Pasco Tri Cities-STL Lambert-St Louis

5h 58m1 stop Denver Intl

$529United Airlines

Tue, Feb 2 - Sat, Feb 6

6:00 am - 12:27 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

8h 27m1 stop Seattle/Tacoma Intl

1:04 pm - 11:59 pmPSC Pasco Tri Cities-STL Lambert-St Louis

8h 55m1 stop Seattle/Tacoma Intl

$608Alaska Airlines

Fri, Dec 25 - Sat, Jan 2

6:00 am - 12:27 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

8h 27m1 stop Seattle/Tacoma Intl

1:04 pm - 11:59 pmPSC Pasco Tri Cities-STL Lambert-St Louis

8h 55m1 stop Seattle/Tacoma Intl

$642Alaska Airlines

Fri, Dec 25 - Sun, Dec 27

6:01 am - 3:34 pmSTL Lambert-St Louis-PSC Pasco Tri Cities

11h 33m2 stops Los Angeles Portland

10:02 am - 11:36 pmPSC Pasco Tri Cities-STL Lambert-St Louis

11h 34m2 stops Seattle/Tacoma Intl Los Angeles

$657Alaska Airlines

Tue, Feb 2 - Sat, Feb 6

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United Airlines flights from St. Louis to Pasco

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

United Airlines

Feb 2

STL4:30 pmLambert-St Louis

6h 39m

1 stop

PSC9:09 pmPasco Tri Cities

Feb 6

PSC12:40 pmPasco Tri Cities

5h 58m

1 stop

STL8:38 pmLambert-St Louis

$529

United Airlines

Feb 2

STL8:30 amLambert-St Louis

14h 39m

2 stops

PSC9:09 pmPasco Tri Cities

Feb 6

PSC12:40 pmPasco Tri Cities

5h 58m

1 stop

STL8:38 pmLambert-St Louis

$534

United Airlines

Feb 2

STL4:30 pmLambert-St Louis

6h 39m

1 stop

PSC9:09 pmPasco Tri Cities

Feb 6

PSC12:40 pmPasco Tri Cities

5h 58m

1 stop

STL8:38 pmLambert-St Louis

$557

Alaska Airlines flights from St. Louis to Pasco

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

Alaska Airlines

Feb 3

STL4:06 pmLambert-St Louis

9h 51m

1 stop

PSC11:57 pmPasco Tri Cities

Feb 10

PSC6:08 amPasco Tri Cities

7h 00m

1 stop

STL3:08 pmLambert-St Louis

$399

Alaska Airlines

Dec 25

STL6:00 amLambert-St Louis

8h 27m

1 stop

PSC12:27 pmPasco Tri Cities

Jan 2

PSC1:04 pmPasco Tri Cities

8h 55m

1 stop

STL11:59 pmLambert-St Louis

$608

Alaska Airlines

Dec 25

STL6:00 amLambert-St Louis

8h 27m

1 stop

PSC12:27 pmPasco Tri Cities

Dec 27

PSC1:04 pmPasco Tri Cities

8h 55m

1 stop

STL11:59 pmLambert-St Louis

$642

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

Wed 2/3

4:06 pm-11:57 pm

1 stop9h 51m

Pasco Tri Cities

Wed 2/10

6:08 am-3:08 pm

1 stop7h 00m

$399

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Fri 12/11

6:03 am-3:11 pm

2 stops11h 08m

Pasco Tri Cities

Sun 12/13

7:00 am-2:44 pm

1 stop5h 44m

$414

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Wed 2/3

6:10 am-5:06 pm

2 stops12h 56m

Pasco Tri Cities

Wed 2/10

7:00 am-4:37 pm

1 stop7h 37m

$414

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Wed 2/3

5:05 am-1:40 pm

2 stops10h 35m

Pasco Tri Cities

Wed 2/10

5:00 am-4:20 pm

2 stops9h 20m

$419

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Fri 12/11

2:31 pm-7:52 pm

1 stop7h 21m

Pasco Tri Cities

Sun 12/13

3:37 pm-11:52 pm

1 stop6h 15m

$419

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Fri 12/11

6:03 am-3:11 pm

2 stops11h 08m

Pasco Tri Cities

Sun 12/13

12:26 pm-11:26 pm

2 stops9h 00m

$427

Quickest round-trip

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Tue 2/2

4:30 pm-9:09 pm

1 stop6h 39m

Pasco Tri Cities

Sat 2/6

12:40 pm-8:38 pm

1 stop5h 58m

$529

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Fri 12/25

6:00 am-12:27 pm

1 stop8h 27m

Pasco Tri Cities

Sat 1/2

1:04 pm-11:59 pm

1 stop8h 55m

$608

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Fri 12/25

6:00 am-12:27 pm

1 stop8h 27m

Pasco Tri Cities

Sun 12/27

1:04 pm-11:59 pm

1 stop8h 55m

$642

St. LouisPasco

STL Lambert-St Louis - PSC Pasco Tri Cities

STLPSC

Lambert-St Louis

Tue 2/2

6:01 am-3:34 pm

2 stops11h 33m

Pasco Tri Cities

Sat 2/6

10:02 am-11:36 pm

2 stops11h 34m

$657

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 16 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 October 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

Best Price Found	$210
Fastest flight time	6h 39m
Direct flights	None

The best one-way flight to Pasco from St. Louis in the past 72 hours is $210. The best round-trip flight deal from St. Louis to Pasco found on momondo in the last 72 hours is $399.

The fastest flight from St. Louis to Pasco takes 6h 39m

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 6h 39m.
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 November 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 61% of all bookings. The subsequent popular airline is Delta at 39%.

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 13,159 reviews		Search Alaska Airlines flights
Delta	PriceFrom $398	Free Cancellation	Rating 7.8 8,700 reviews		Search Delta flights

Kennewick

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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.

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