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Flights from Seattle to St. Louis
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Book flight tickets from Seattle to St. Louis starting at PHP 2,733

Discover our range of affordable one-way and round-trip flights from Seattle to St. Louis and kick-start your next adventure today!

  • One way
  • Round-trip
      • Cheapest nonstop
        SEA07:30
        3h 54m
        Nonstop
        STL13:24
        Wed, Dec 4|Seattle - St. Louis|Alaska Airlines
        PHP 5,138PHP 5,732
        10% OFF
        10% OFF
        PHP 5,732PHP 5,138

        Choose Alaska Airlines flights from Seattle to St. Louis. The one-way direct flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Wed, Dec 4, arriving at St.Louis Lambert International Airport. One-way ticket prices start from PHP 5,138 including taxes and charges.

      • SEA08:00
        3h 53m
        Nonstop
        STL13:53
        Tue, Jan 7|Seattle - St. Louis|Alaska Airlines
        PHP 5,331PHP 5,732
        7% OFF
        7% OFF
        PHP 5,732PHP 5,331

        Choose Alaska Airlines flights from Seattle to St. Louis. The one-way direct flight with Alaska Airlines departs from Seattle-Tacoma International Airport on Tue, Jan 7, arriving at St.Louis Lambert International Airport. One-way ticket prices start from PHP 5,331 including taxes and charges.

      • SEA15:15
        15h 51m
        1 stop
        STL09:06
        Fri, Jan 10|Seattle - St. Louis|Frontier Airlines
        PHP 2,733PHP 5,732
        52% OFF
        52% OFF
        PHP 5,732PHP 2,733

        Choose Frontier Airlines flights from Seattle to St. Louis. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Fri, Jan 10, arriving at St.Louis Lambert International Airport. One-way ticket prices start from PHP 2,733 including taxes and charges.

      • SEA21:36
        8h 37m
        1 stop
        STL08:13
        Tue, Dec 31|Seattle - St. Louis|Frontier Airlines
        PHP 3,062
        PHP 3,062

        Choose Frontier Airlines flights from Seattle to St. Louis. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Tue, Dec 31, arriving at St.Louis Lambert International Airport. One-way ticket prices start from PHP 3,062 including taxes and charges.

      • SEA15:15
        16h 1m
        1 stop
        STL09:16
        Fri, Jan 17|Seattle - St. Louis|Frontier Airlines
        PHP 3,086
        PHP 3,086

        Choose Frontier Airlines flights from Seattle to St. Louis. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Fri, Jan 17, arriving at St.Louis Lambert International Airport. One-way ticket prices start from PHP 3,086 including taxes and charges.

      • SEA15:15
        16h 1m
        1 stop
        STL09:16
        Thu, Jan 30|Seattle - St. Louis|Frontier Airlines
        PHP 3,327
        PHP 3,327

        Choose Frontier Airlines flights from Seattle to St. Louis. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Jan 30, arriving at St.Louis Lambert International Airport. One-way ticket prices start from PHP 3,327 including taxes and charges.

      • SEA19:05
        14h 5m
        1 stop
        STL11:10
        Sat, Jan 4|Seattle - St. Louis|Frontier Airlines
        PHP 3,599
        PHP 3,599

        Choose Frontier Airlines flights from Seattle to St. Louis. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Sat, Jan 4, arriving at St.Louis Lambert International Airport. One-way ticket prices start from PHP 3,599 including taxes and charges.

      • SEA12:13
        29h 21m
        1 stop
        STL19:34
        Thu, Jan 9|Seattle - St. Louis|Frontier Airlines
        PHP 3,615
        PHP 3,615

        Choose Frontier Airlines flights from Seattle to St. Louis. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Thu, Jan 9, arriving at St.Louis Lambert International Airport. One-way ticket prices start from PHP 3,615 including taxes and charges.

      • SEA21:36
        8h 37m
        1 stop
        STL08:13
        Tue, Dec 17|Seattle - St. Louis|Frontier Airlines
        PHP 3,944
        PHP 3,944

        Choose Frontier Airlines flights from Seattle to St. Louis. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Tue, Dec 17, arriving at St.Louis Lambert International Airport. One-way ticket prices start from PHP 3,944 including taxes and charges.

      • SEA21:36
        8h 37m
        1 stop
        STL08:13
        Sun, Jan 5|Seattle - St. Louis|Frontier Airlines
        PHP 4,240
        PHP 4,240

        Choose Frontier Airlines flights from Seattle to St. Louis. The one-way connecting flight with Frontier Airlines departs from Seattle-Tacoma International Airport on Sun, Jan 5, arriving at St.Louis Lambert International Airport. One-way ticket prices start from PHP 4,240 including taxes and charges.

      • SEA13:00
        3h 5m
        Nonstop
        STL14:00
        Wed, Dec 11|Seattle - St. Louis|Alaska Airlines
        Find More Flights
        Find More Flights

Crossed out prices are calculated based on the average price of the corresponding route on Trip.com.

Find the best time to fly from Seattle to St. Louis

These price trend charts carefully monitor and predict how flight prices from Seattle to St. Louis will change. Keep a close eye on them to understand when the best time to buy your tickets is.

Displayed prices are calculated based on the cheapest average weekly prices of the corresponding route on Trip.com.

Airlines Flying from Seattle to St. Louis

Which airline provides the cheapest flights from Seattle to St. Louis? Discover the option that best suits your travel needs before embarking on your journey.

Frontier Airlines
From PHP 2,733
American Airlines
From PHP 4,762
Delta Air Lines
From PHP 5,074
Alaska Airlines
From PHP 5,138
United Airlines
From PHP 6,445
Southwest Airlines
From PHP 8,112
Spirit Airlines
From PHP 14,124
Sun Country Airlines
From PHP 17,619

Find more flights and airlines

Alternative Routes from Seattle to St. Louis

There are various non-direct routes from Seattle to St. Louis which could be cheaper and faster! Check out these alternative options to see if they could work for your trip.

  • Cheapest
    Frontier Airlines
    SEA
    15:15
    15h 51m
    1 transfer
    STL
    09:06
    Seattle-Tacoma International Airport - St.Louis Lambert International Airport
    Fri, Jan 10Frontier Airlines
    PHP 2,733
  • Frontier Airlines
    SEA
    15:15
    15h 51m
    1 transfer
    STL
    09:06
    Seattle-Tacoma International Airport - St.Louis Lambert International Airport
    Fri, Jan 10Frontier Airlines
    PHP 2,733
    Find More Flights

FAQ

  • When are flight tickets from Seattle (SEA) to St. Louis (STL) the cheapest?

    Airlines adjust prices for flights from Seattle to St. Louis based on the departure date and time of your selection. By analyzing data from all airlines, we've discovered that on Trip.com, you can find the lowest flight prices on Tuesdays, Wednesdays, and Saturdays.

  • How much do flights from Seattle (SEA) to St. Louis (STL) cost?

    According to Trip.com's data, the lowest price is around PHP 16,569.

  • How long does it take to fly from Seattle (SEA) to St. Louis (STL) and what is the distance?

    It takes around 3 hours 53 minutes to fly from Seattle (SEA) to St. Louis (STL).

  • What is the transportation method from the main airport to downtown in St. Louis?

    • The distance from St.Louis Lambert International Airport to downtown is about 20 km. It takes about 40 minutes by taxi.

  • What are the most popular airlines that fly from Seattle (SEA) to St. Louis (STL)?

    Airlines with flights from Seattle (SEA) to St. Louis (STL): Qatar Airways, Alaska Airlines, Air Tahiti Nui, Japan Airlines, Hawaiian Airlines, American Airlines and Singapore Airlines.

How to find a cheap flight from Seattle to St. Louis

If you leave it until the last minute and forget to check some of the key information when booking tickets, prices can often end up skyrocketing. Below, you can find our top tips for getting the best value flights – from changing dates to chasing deals, there are plenty ways to keep your next trip affordable.
1
Book Early
Once prices are gone, they're gone. Lock in deals while you can!
2
Compare Flight Prices
Compare prices on travel agency and airline websites.
3
Look Out for Deals
Check airline and travel agency websites for latest flight deals
4
Check One-way Fares
Buying two cheap one-way flights can sometimes be a better deal than a round-trip.
5
Try Different Dates
Flying during the week, early in the morning, or late at night can help save money.
6
Use the Trip.com App
Save up to £10 per person when booking your flights on Trip.com

Flight Information from Seattle to St. Louis

Cheapest nonstop flight pricePHP 2,733
Cheapest round-trip ticket pricePHP 9,474
Off-season for travelDecember
Peak season for travelFebruary
Flight distance2,765.15 km
Average flight time3 hours 53 minutes
Popular airlineAmerican Airlines

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