Cheap flights from Seattle to St. Louis (SEA - STL) from $57

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to St. Louis. Check prices with Cheapflights to find a great deal for your trip.

To save on the cost of your flight from Seattle to St. Louis, book at least 51 days before your planned departure. Booking around this time can save you about 105% on the cost of this flight compared to booking a flight leaving this week. We have found prices from $344 if you need a flight within two weeks. For flights within the next 72 hours, you can find tickets from as low as $460.

September can be a great time to fly to St. Louis from Seattle with a flight ticket averaging about $381. Cheapflights users have found deals in the month of September for as cheap as $144. The most expensive prices can be found in the month of June.

When flying from Seattle to St. Louis, the time of day you fly usually plays a role in the price. Save by searching for a flight in the evening, which can drop the price by up to 35% versus a flight at noon.

If you book a flight from Seattle to St. Louis, you will be flying from Seattle/Tacoma Intl to Lambert-St Louis. Flights to Lambert-St Louis (STL) from Seattle/Tacoma Intl (SEA) take 3h 47m for a nonstop flight. There are 6 flights from Seattle/Tacoma Intl to St. Louis per day from 6 airlines.

Yes, there are multiple flights from Seattle to St. Louis for under $200. The cheapest flight booked recently is on American Airlines for just $154, but on average you can expect to pay $199.

Cheapflights has at least 20 direct flights from Seattle to St. Louis under $200. A good price for a nonstop flight from Seattle to St. Louis is less than $396.

There are currently 20+ open flights from Seattle to St. Louis within the next 7 days for less than $300.

You can find nonstop flights on the following days: Sunday, Monday, Tuesday, Thursday, Friday, Saturday.

The Seattle/Tacoma Intl to Lambert-St Louis flight path was viewed by 5 users in the past month. Keep an eye out for changes in search interest prior to high and low season.

On average 13 flights depart from Seattle to St. Louis per day.
Morning (6am - Noon) - 54% of flight departures
Evening (6pm - Midnight) - 46% of flight departures

American Airlines, Frontier, and Alaska Airlines can get you from Seattle to St. Louis in just under 3h 47m. Your travel time can differ by up to 7h 14m. Airlines will cover a distance of 1714 mi. This flight may include one or multiple stops.

Cheapflights users have booked flights from Seattle to St. Louis round-trip from $154. Other airlines that can offer you cheap pricing are Frontier, from $158, and Alaska Airlines, from $197. These flights start at 59% lower than the current average price 3 months from now.

$57 is the cheapest one-way deal found within the past few days, from Spirit Airlines. You may also be able to find cheap deals on American Airlines and Frontier, with prices starting from $77 and $96, respectively.

American Airlines, Alaska Airlines and Delta are the most popular airlines when flying from Seattle to St. Louis.

Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to St. Louis on time: Qatar Airways (90%), Japan Airlines (90%), Singapore Airlines (88%).

The cheapest flight price from Seattle to St. Louis is $99. On average you can expect to pay $285. The most popular route, (Seattle/Tacoma Intl - Lambert-St Louis), can usually be booked for $168.

SEA stands for Seattle/Tacoma Intl Airport, while STL stands for Lambert-St Louis Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

Cheapflights makes it easy to find Seattle to St. Louis flights by helping our users search from 900+ travel sites for deals. We also provide you with filters for cabin, price, airline, airports, number of stops, and many more to narrow down that perfect flight.

By finding flights from multiple airlines and providers at completely no cost, Cheapflights helps millions of users like you annually find the best flights to St. Louis from Seattle.

Yes, we can. To see specific flights from Seattle to St. Louis with no change fees, users can toggle flexible booking options after using the search form above to find flights.

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!