Direct (non-stop) flights from Saint Louis (STL) to SeaTac (SEA)
Find comprehensive flight information, schedules, and booking details for direct flights from Saint Louis (STL), US to SeaTac (SEA), US. This popular route is operated by 1 airline, offering multiple daily departures.• Flight Duration: 4h 15m - 4h 42m (average flight time)• Distance: 1714 miles (2758 km) (air miles between airports)• Daily Flights: 1-2 flights (scheduled departures per day)
Saint Louis (STL)
US
SeaTac (SEA)
US
FLIGHT TIME
4h 15m - 4h 42m
FLIGHT DISTANCE
1714 miles (2758 km)
4h 38m - 4h 41m
07:00
16:15
1714 miles (2758 km)
January
1 (Show)
11
Terminal 1 (SeaTac (SEA))
Flight Schedule
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Airlines Operating This Route
Click any airline to view their specific flight schedules, policies, and route details for this connection. You can also explore flights from Saint Louis (STL) and flights to SeaTac (SEA).
Route Insights
Route Demand
This route operates 11 flights per week, serving moderate demand between St Louis (STL) and Seattle (SEA).
Best Time to Fly
Best Value Period
January typically offers the best value for travelers, with lower average fares compared to peak travel periods.
Price Trends
Price variation throughout the year is significant, with Jan being the most affordable month and prices increasing during peak travel seasons.
Distance & Duration Explained
Route Distance
At 1714 miles (2758 km), this is an ultra-long-haul route between St Louis (STL) and Seattle (SEA), requiring larger aircraft and extended flight times.
Flight Duration
Flight duration averages 4h 15m - 4h 42m, with actual times ranging from 4h 38m - 4h 41m depending on aircraft type, wind conditions, and routing.
Airline Comparison
Available Airlines
Alaska Airlines is the sole operator on this route, providing 2 daily flights between STL and SEA.
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Best Time to Visit & Travel Planning
Cheapest Day
Cheapest Month
Average Fare
$268
Travel Planning Tips for Saint Louis (STL) to SeaTac (SEA)
- Best Day to Book
Wednesday typically offers the lowest fares for flights from Saint Louis (STL) to SeaTac (SEA). Consider booking on this day for potential savings.
- Best Month to Travel
January is generally the cheapest month to fly from Saint Louis (STL) to SeaTac (SEA). Plan your trip during this month for the best deals.
- Average Flight Price
The average fare for flights from Saint Louis (STL) to SeaTac (SEA) is approximately $268. Prices may vary based on booking time, season, and airline.
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Related Pages
Related Airports
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Frequently Asked Questions
How many flights operate from St Louis (STL) to Seattle (SEA)?
There are 2 direct flights operating from St Louis (STL) to Seattle (SEA). Approximately 1-2 flights daily.
Which airlines operate flights from St Louis (STL) to Seattle (SEA)?
1 airline operates on this route: Alaska Airlines.
How long is the flight from St Louis (STL) to Seattle (SEA)?
The flight duration from St Louis (STL) to Seattle (SEA) is approximately 4h 15m - 4h 42m.
What is the distance from St Louis (STL) to Seattle (SEA)?
The distance from St Louis (STL) to Seattle (SEA) is 1714 miles (2758 km).
What is the flight time range for this route?
Flight times on this route range from 4h 38m - 4h 41m.
What are the earliest and latest flight departure times?
The earliest flight departs at 07:00 and the latest flight departs at 16:15.
What is the cheapest month to fly from St Louis (STL) to Seattle (SEA)?
January is typically the cheapest month to fly on this route.
How many flights operate per week on this route?
Approximately 11 flights operate per week from St Louis (STL) to Seattle (SEA).
What types of aircraft operate on this route?
This route is served by Boeing 737-900 (winglets) Passenger/BBJ3.
What is the average flight price from St Louis (STL) to Seattle (SEA)?
The average flight price for a round-trip ticket from St Louis (STL) to Seattle (SEA) is approximately $444 USD. Prices can vary based on booking time, season, and airline.
When is the best time to book flights from St Louis (STL) to Seattle (SEA) for the lowest prices?
January is typically the cheapest month to fly from St Louis (STL) to Seattle (SEA). Booking in advance and avoiding peak travel seasons can help you find better deals.
How far is Seattle (SEA) from St Louis (STL)?
The distance from St Louis (STL) to Seattle (SEA) is 1714 miles (2758 km). This is a long-haul flight route.
How long does it take to fly from St Louis (STL) to Seattle (SEA)?
The flight time from St Louis (STL) to Seattle (SEA) is approximately 4h 15m - 4h 42m. Actual flight duration may vary based on weather conditions, aircraft type, and routing.
What city does Seattle (SEA) serve?
Seattle (SEA) serves Seattle, US.