On this page, you can find and buy flights from Seattle to St. Louis. The 2,775 km route is served regularly, with a frequency of about 33 flights per week.
Flights on this route are operated by American Airlines and Alaska Airlines. To plan your logistics, check how to get to Seattle airport and find out the best ways to reach the city after arrival by exploring how to get from St. Louis airport.
The table shows direct flights Seattle → St. Louis on the selected date. The flight takes approximately 3 h 51 min. Regular flights are operated by Alaska Airlines, Hawaiian Airlines and American Airlines. Departures from Seattle-Tacoma International Airport and Paine Field airports, arrivals at Lambert-St. Louis International Airport.
For each flight, the following details are shown: departure time (local), arrival city and airport, flight number and airline, terminal or gate, and status. Click on a flight to open its details and go to ticket search. To view flights on a different day, change the date above the table.
Below is a calendar of the lowest flight ticket prices for Seattle — St. Louis by day. Pick a convenient date and instantly see the fare. The cheapest flights on this route start from AED 477 in y, and the most expensive are around AED 759 in n. If your travel dates are flexible, the calendar will help you find the best price for your preferred period. To view round-trip fares, switch to the "Round trip" tab above the calendar, select your departure date — and the right-hand calendar will highlight the lowest prices for return flights on each day.
Seattle → St. Louis, average one-way price
| Month | Average price | Level | Month | Average price | Level | Month | Average price | Level |
|---|---|---|---|---|---|---|---|---|
| Jan | AED 674 | low | May | AED 789 | medium | Sep | AED 693 | low |
| Feb | AED 712 | low | Jun | AED 861 | high | Oct | AED 751 | medium |
| Mar | AED 900 | high | Jul | AED 938 | high | Nov | AED 808 | medium |
| Apr | AED 712 | low | Aug | AED 861 | high | Dec | AED 938 | high |
Some values are estimated based on seasonality.
The climate in St. Louis is characterized by distinct seasonality: July is the hottest month, with maximum temperatures reaching 31.4°C. The coldest period occurs in January, while peak rainfall is often observed in March and May.
Fare analysis shows that the most budget-friendly flights are available in July, with prices starting AED 477. In March, ticket prices reach their peak, averaging AED 759.
For a comfortable trip, it is best to choose September, when temperatures are mild and precipitation is at its lowest. Spring months can be less predictable due to a higher probability of rain.
There are three airlines operating on this route, with Alaska Airlines and American Airlines providing the highest flight frequency. Direct connections and a high volume of flights (about 33 per week) make it easy to find a convenient departure time. You can find detailed information about flight schedules and specific carriers in the list below.
Flights Seattle — St. Louis depart from Seattle-Tacoma International Airport and Paine Field and arrive at Lambert-St. Louis International Airport. Below are pages for the cities, countries, and airports on the route: airlines, schedules, and travel guides.
For direct flights, the estimated travel time is approximately 3 hours 45 minutes, as the distance between the cities is 2,775 km.
Regular flight service between these cities is provided by Alaska Airlines, American Airlines, and Hawaiian Airlines.
Fares are dynamic and depend on the season and demand. The latest minimum rates are always displayed in the low-price calendar on this page.
The main arrival point for flights from Seattle is St. Louis Lambert International Airport (STL).
The most favorable offers are usually available when booking 1–2 months before your trip. We also recommend monitoring the price chart to catch periods of lower costs.
Where travelers fly most — pick a route and check prices
