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Cheap Flights from Seattle to St Louis - SEA to STL

Popular flights from Seattle to St Louis

If your flight days are flexible and you looking for a good deal, our charts on cheap flights provide some insight regarding affordable flight options for your next big adventure.

Alaska Airlines
Departure Date Return Date Lowest Price
Mar 3, 2016 Mar 6, 2016 $245
Mar 4, 2016 Mar 6, 2016 $245
Mar 8, 2016 Mar 15, 2016 $245
Mar 9, 2016 Mar 16, 2016 $245
American Airlines
Departure Date Return Date Lowest Price
Apr 5, 2016 Apr 11, 2016 $254
Frontier Airlines
Departure Date Return Date Lowest Price
Feb 24, 2016 Feb 26, 2016 $248
United Airlines
Departure Date Return Date Lowest Price
Mar 3, 2016 Mar 6, 2016 $253
Mar 4, 2016 Mar 6, 2016 $253
Mar 8, 2016 Mar 15, 2016 $253
Mar 9, 2016 Mar 16, 2016 $253
Apr 4, 2016 Apr 8, 2016 $253

How Much Does it Cost to Fly from Seattle to St Louis (SEA to STL)?

We have collected flight cost data from across the web for travel from Seattle to St Louis, and have found the average flight price for this trip to be $248.

When Can I Buy the Cheapest Flight from Seattle to St Louis (SEA to STL)?

Airlines can adjust prices for plane tickets from Seattle to St Louis based on the day and time that you decide to book your flight. We have collected data from all airlines, and have discovered that the best days to book flights are Tuesdays, Wednesdays, and Saturdays. Read our article to find more information about the best time to buy airline tickets.

How far in advance should you book flights from Seattle to St Louis

The chart below shows up-to-date information regarding how far in advance a flight from Seattle to St Louis should be booked.

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $728 $325
7-14 days $526 $258
14-21 days $319 $248
21-30 days $245 $253
30-60 days $245 $253
60-90 days $246 $253
90+ days $297 $272

Cheapest Day To Fly from Seattle to St Louis

The chart below shows up-to-date information regarding the cheapest days to fly from Seattle to St Louis.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$253 $245 $245 $245 $245 $253 $253

Lowest Fares Chart By Month from Seattle to St Louis

The chart below shows the lowest fare by month when flying from Seattle to St Louis.

Month Origin Destination Carrier Depart Date Return Date Stops Price
February Seattle St Louis Frontier 2/24/16 2/26/16 1 $248
March Seattle St Louis Alaska 3/3/16 3/6/16 0 $245
April Seattle St Louis Alaska 4/22/16 4/23/16 0 $246
May Seattle St Louis United 5/13/16 5/15/16 1 $272
June Seattle St Louis United 6/1/16 6/7/16 1 $280
July Seattle St Louis United 7/13/16 7/18/16 1 $351
August Seattle St Louis United 8/1/16 8/9/16 1 $326
September Seattle St Louis United 9/7/16 9/14/16 1 $272

Cheapest Weekend Non-Stop Flights for the Next 30 Days from Seattle to St Louis

If you're ready to take a trip in the next 30 days and want to fly on the weekend, you might be wondering which weekend is the cheapest to fly. The chart below shows up-to-date data regarding weekend flight prices from Seattle to St Louis.

Next 30 Days

SunMonTueWedThuFriSat
14 15 16 17 18 19 20
$531
21 22 23 24 25 26 27
$531 $352
28 29 1 2 3 4 5
$352 $245
6 7 8 9 10 11 12
$245 $275
13 14 15 16 17 18 19
$275

Non-Stop vs Connecting Flights from Seattle to St Louis (SEA to STL)

Your Seattle to St Louis flight can be significantly cheaper by choosing a multi-stop airline ticket. Although these connecting flights sacrifice some convenience, on average, travelers save 20%-60% when they choose to fly multi-stop versus a direct flight.

The average price for connecting flights from Seattle to St Louis is $259.

The average price for non-stop flights from Seattle to St Louis is $266.

The chart below shows up to date information regarding non-stop flights from Seattle to St Louis.

Nonstop Flight Details from Seattle to St Louis
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
Alaska 1 1 1 1 1 1 1 12:05 12:05

Round Trip vs One Way Flights from Seattle to St Louis (SEA to STL)

We have found that there is often no price difference between buying a round trip flight versus a one way flight. Increased flexibility is the main benefit when it comes to buying a one way flight from Seattle to St Louis. However, booking a round trip flight can be a simpler process. You can compare round trip and one way flights by using our flight comparison.

The average price for one way flights from Seattle to St Louis is $125.

The average price for round trip flights from Seattle to St Louis is $257.

More Cheap Flights

FlightsAirlineLowest Price
Portland to St Louis Delta, United, Alaska, US Airways, American, Frontier $264
Vancouver to St Louis Air Canada, United, Delta, Alaska, US Airways, American, WestJet $276
Bellingham to St Louis Delta, Alaska, American, Frontier $368
Victoria to St Louis Air Canada, United, Delta, Alaska, American, WestJet $3,421
Pasco to St Louis United, Delta, Alaska, US Airways, American $414
Yakima to St Louis Delta, Alaska, American Check Dates
Wenatchee to St Louis Delta, Alaska Check Dates
Seattle to Chicago United, Delta, Alaska, US Airways, American, Sun Country, Frontier, AirTran, Virgin America $203
Seattle to Atlanta Alaska, United, Delta, American, US Airways, Frontier, AirTran $268
Portland to Chicago United, Delta, Alaska, US Airways, American, Spirit, Frontier, Virgin America $181
Seattle to Dallas - Ft Worth Delta, United, Alaska, US Airways, American, Sun Country, Frontier, Virgin America $183
Seattle to New York United, Alaska, American, US Airways, Sun Country, JetBlue, Frontier, Virgin America, AirTran $239
Vancouver to Chicago Air Canada, Delta, United, Alaska, American, US Airways, WestJet $258
Portland to Atlanta United, Delta, Alaska, American, US Airways, Spirit, Frontier, AirTran $258
Portland to Dallas - Ft Worth United, Delta, Alaska, US Airways, American, Spirit, Frontier, Virgin America $172
Portland to New York United, Alaska, US Airways, American, Spirit, JetBlue, Frontier, Virgin America, AirTran $259
Seattle to Kansas City United, Delta, Alaska, US Airways, American, Frontier, AirTran $230
Seattle to Nashville United, Delta, Alaska, US Airways, American, Frontier $244
Seattle to Minneapolis - St Paul United, Delta, Alaska, American, US Airways, Sun Country, Frontier $218
Seattle to Indianapolis Alaska, United, Delta, US Airways, American, Frontier, AirTran $237
Seattle to Detroit United, Delta, Alaska, American, US Airways, Frontier, AirTran $269
Vancouver to New York Air Canada, Alaska, United, Delta, American, US Airways, Cathay, WestJet $292
Seattle to Los Angeles United, Delta, Alaska, US Airways, American, Hawaiian, Frontier, Virgin America $86
Seattle to Denver United, Delta, Alaska, US Airways, American, Frontier $135
Seattle to Houston United, Delta, Alaska, US Airways, American, Frontier, AirTran $258
Seattle to Washington United, Delta, Alaska, American, US Airways, Sun Country, Hawaiian, JetBlue, Frontier, Virgin America, AirTran $244
Seattle to Memphis Alaska, United, Delta, US Airways, American, Frontier, AirTran $262
Seattle to Springfield United, American $352
Seattle to Charlotte Alaska, Delta, United, US Airways, American, JetBlue $268
Seattle to Milwaukee Alaska, Delta, United, US Airways, American, Frontier, AirTran $300

Airlines Flying from Seattle to St Louis (SEA to STL)

Below are the different airlines that fly from Seattle to St Louis with the average price of their plane tickets. Just remember that different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary of the next 30 days for flights from Seattle to St Louis.

Seattle to St Louis
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American PHX X X X X X X X
Alaska - X X X X X X X
Alaska PDX X X X X X X X
Delta DTW X X X X X X X
United SFO X X X X X X X
Southwest MKE X X X X X X X

Airports for Your Route

These pages contain information about the major airports in Seattle and St Louis, so you can feel comfortable knowing how to get around whether you are about to take off or you just landed.

Seattle to St Louis Flight Questions

Below are some common questions that asked about this flight route:

Question: How long is a direct flight from Seattle to St Louis?
Answer: The average Seattle to St Louis flight time is 3 hours and 38 minutes.
Question: How many miles are there between Seattle and St Louis?
Answer: The distance from Seattle to St Louis is 1704 miles.
Question: How common are direct flights from Seattle to St Louis?
Answer: There are 7 direct flights from Seattle to St Louis.
Question: What is the most popular airline for non-stop flights from Seattle to St Louis?
Answer: Alaska Airlines provides 100% of the non-stop flights between Seattle and St Louis.
Question: What are the most popular connecting cities when flying from Seattle to St Louis?
Answer: Denver, CO
Seattle (SEA) To St Louis (STL) Flights: Cheap Flights From Seattle To St Louis | FareCompare.