- Cheapest roundtrip flight
- from€351
- Fastest outbound flight
- Fastest inbound flight
- non-stop flights
- 13x / week
- Flight distance
- 2,748 km
- Time difference
- Most popular airlines
- Alaska Airlines
- Alaska Airlines
Flight schedule from Seattle-Tacoma (SEA) to St. Louis (STL)
Select a travel date in the flight schedule for the route from Seattle-Tacoma (SEA) to St. Louis (STL) and compare affordable flight deals.
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Matching outbound flightsSEA–STL · 4 of 4
fromto
dep.arr.
durationstopovers
- October 4 – 10, 2026
- October 11 – 17, 2026
- October 18 – 24, 2026
- SEASTLnonstop
- SEASTLnonstop
- SEASTLnonstop
- SEASTLnonstop
Important flight information
Frequently Asked Questions (FAQ)
How long is the flight from Seattle-Tacoma to St. Louis?
A nonstop flight from Seattle-Tacoma to St. Louis typically takes around 3 hours 54 minutes. If you choose a connecting flight, allow more travel time. Typical one-stop itineraries take around 8 hours 31 minutes. For the quickest trip, a nonstop flight is usually the most comfortable choice.
Are there nonstop flights from Seattle-Tacoma to St. Louis?
Yes, there are nonstop flights from Seattle-Tacoma to St. Louis, although not necessarily every day. On average, around 13 to 14 flights per week are available. If you have flexibility with your travel dates, you will have an easier time finding a suitable nonstop connection.
Which airlines fly from Seattle-Tacoma to St. Louis?
Direct flights from Seattle-Tacoma to St. Louis are operated by, among others, Alaska Airlines. Connecting flights with one stop are also available, for example with Delta (via Detroit). If travel time matters to you, a direct flight is usually the most convenient option. Connecting flights often give you more choice of departure times and airlines.
On which days are there nonstop flights from Seattle-Tacoma to St. Louis?
Nonstop flights from Seattle-Tacoma to St. Louis operate daily. The schedule may vary by season, so it is worth comparing several travel dates. If your preferred day does not have a nonstop flight, nearby departure days or short connecting flights may be a good alternative.
How many flights are there per day from Seattle-Tacoma to St. Louis?
On the route from Seattle-Tacoma to St. Louis, there are on average around 1 to 2 flights per day. The number of flights can vary by day of the week and season. If you are flexible with your dates, it is worth comparing several departure days.
How many flights per week are there from Seattle-Tacoma to St. Louis?
On the route from Seattle-Tacoma to St. Louis, there are around 13 to 14 flights per week. The number of flights can vary depending on the season and day of the week. If you have flexibility, it is worth looking at several departure days.
When does the first flight from Seattle-Tacoma to St. Louis depart?
The earliest nonstop flight from Seattle-Tacoma to St. Louis usually departs at 8:10 AM. The exact departure time may vary by day of the week and airline. Early flights are especially useful if you want to make the most of your arrival day in St. Louis.
When does the last flight from Seattle-Tacoma to St. Louis depart?
The last nonstop flight from Seattle-Tacoma to St. Louis usually departs at 6:06 PM. Late flights can be convenient if you want to travel after work or in the evening. Do check whether it is a nonstop flight, as a connecting itinerary could push the arrival time significantly later.