$75 Cheap flight deals from Seattle (SEA) to St. Louis (STL)

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This Weekend's Flight Deals from Seattle to St. Louis

This weekend's flight prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

Airfares from $75 One Way, $134 Round Trip from Seattle to St. Louis

Prices starting at $134 for return flights and $75 for one-way flights to St. Louis were the cheapest prices found within the past 7 days, for the period specified. Prices and availability are subject to change. Additional terms apply.

St. Louis economy flight packages

Price found within the past 48 hours. Click for updated prices.
Super 8 by Wyndham Rolla
Baymont by Wyndham Rolla
Super 8 by Wyndham Cuba
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More About Flying To St. Louis from Seattle

Route Information for Flights from Seattle to St. Louis

Origin Airport IATA Code
SEA
Destination Airport IATA Code
STL
Distance
1705 mi
Direct Flight Airlines
American Airlines, Qatar Airways, JAL, Alaska Airlines, Hawaiian Airlines, Air Tahiti Nui
Earliest Flight Arrival
9:27PM UTC
Latest Flight Arrival
7:59AM UTC

Finding Flights from Seattle to St Louis

Seattle Airport

While Seattle is home to several airports, the only one that handles commercial flights is the Seattle-Tacoma International Airport. Also known as Sea-Tac, this airport is responsible for all incoming flights, along with flights from Seattle. Alaska Airlines, Air Canada, Delta Air Lines, Southwest Airlines, and US Airways are a few airlines that operate out of this airport. Located in SeaTac, Washington, the airport sits along the intersection of three state routes: 99, 518, and 509. Though the airport has three terminals, only the Concourse Terminal and North Satellite Terminal handle domestic flights. The South Satellite Terminal specializes in international flights. It's just a short drive from the airport to downtown.

Transportation

When you need to reach your hotel quickly, head for the public transportation system, which consists of Sound Transit and Metro Transit. The buses and light rails only cost a few dollars, and you can visit the sales counter at any station to purchase tickets for your trip. The light rail system drops passengers directly at some of the top hotels in the downtown area. Seattle uses a grid system for its roads, which makes finding your hotel easy if you drive. You can use the Orbitz.com sign to look for rental cars from the airport.

Weather

If you visit during the spring, winter, or fall, you need a warm coat and an umbrella. Though the city does not get snow, it does get a high amount of rain during these seasons, and temperatures that can drop below 40 degrees Fahrenheit. The summer is much warmer, with temperatures in the high 70s and less rainfall.

Popular Attractions

Seattle is home to dozens of cultural activities and attractions, including the Seattle International Film Festival, the Henry Art Galley, the Woodland Park Zoo, and the Seattle Underground Tour, which takes you through older parts of the city. When you look for flights from Seattle on Orbitz.com, take a few minutes to look for other low-cost attractions in the city.

Lambert-St. Louis International Airport

Allow Orbitz.com to help you book flights to St. Louis. Lambert-St.Louis International Airport is located 10 miles northwest of St. Louis. Over 13 million passengers pass through the airport each year. It is the largest airport in the state of Missouri and services 255 daily departures to over 90 cities, domestically and internationally. Southwest Airlines is based out of Lambert, and Air Canada, Alaska Airlines, Cape Air, Delta and American Airlines all have major hubs at Lambert. You can use Orbitz.com to book bargain tickets on your next trip to the St. Louis area.

St. Louis International Airport Transportation

St. Louis International Airport offers a variety of transportation services for the busy traveler. Shuttle services, rental cars, and public transportation are available at the airport. Go Best Express Airport Shuttle is a popular shuttle service for group transportation. One-way fares start at $17. The MetroLink is St. Louis' rail system and operates 37 stations throughout the city. One-way fares cost $2.

St. Louis Weather

St. Louis has distinct seasons. Summers are hot, and temperatures can get as high as 90 degrees F. Spring is usually a rainy season for St. Louis, so it is best to pack an umbrella for your trip during March, April and May. Fall is usually mild, with temperatures averaging 57 degrees F. Winters can be freezing, with temperature falling to 20 degrees F. Bring a warm coat and boots during winter trips to St. Louis.

Popular Attractions in St. Louis

St. Louis offers a variety of attractions for visitors. Some popular attractions include the famous Gateway Arch, Six Flags of St. Louis, the Saint Louis Zoo and Forest Park. St. Louis is also home to several theaters, such as the Ferrara Theatre, Fox Theatre, and Grand Center. Some popular museums include the St. Louis Children's Museum and the Beall Mansion Museums. Book flights to St. Louis with the help of Orbitz.com to visit these popular attractions.

Frequently asked questions

Are there non-stop flights from Seattle to St. Louis?
There are a couple of airlines that fly straight from Sea-Tac Airport to St. Louis, MO (STL-Lambert-St. Louis Intl.). Lock in your seat now with Southwest Airlines or Alaska Airlines.
What is the shortest flight from Seattle to St. Louis?
Flying from Seattle, WA (SEA-Seattle - Tacoma Intl.) to STL takes at least 4 hours and 30 minutes. Enjoy a tipple and watch a movie or two — this is your chance to just relax.
What airlines fly from Seattle to St. Louis most frequently?
Southwest Airlines (WN) is one of the carriers with the most flights from Seattle, WA (SEA-Seattle - Tacoma Intl.) to Lambert-St. Louis Intl. Airport (STL). It offers 30 services on this route each month. Taking off on a vacation is one of life’s biggest pleasures, and this airline will get you where you need to go. If you need a few more options, take a look at the ticket prices with Alaska Airlines (AS), which operates 30 flights from Seattle to St. Louis every month.
What is the cheapest day of the week to fly?
Consider flying out early in the week to save on your airfare. Orbitz data from 2021 shows that Monday is the cheapest day to depart, followed by Tuesday. Saturday showed the highest average ticket prices likely because many travelers prefer to start their vacation on a weekend.
What is the cheapest month to fly?
We won’t keep you guessing, according to Orbitz data from 2021, the cheapest month to fly is February. Perfect for those who need a weekend getaway, or just a break from it all in the shortest month of the year. Be aware that the most expensive time to fly is during the height of summer in July, and in the holiday month of December.*According to flight demand on Orbitz.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Fare, taxes & fees: Fares include all taxes and fees, except baggage fees. Rates shown reflect fares found by other Orbitz users over the past 7 days. Due to rapidly changing airline prices & seat availability, these fares may no longer be available.

Refunds/changes/cancellations: Itinerary changes, if permitted for the fare, will have a $30 service fee charged by Orbitz. Additional airline charges may apply.

Other conditions: Schedules, fares and rules are subject to change without notice. Seats are limited and may not be available on all flights/dates or in all markets. Lower fares may be available. Fares will not be honored retroactively or in exchange for any wholly/partially unused ticket. Tickets are non-transferable and non-refundable. Fare rules are provided for the selected itinerary before booking.