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Did you mean flights from Seattle to St Louis?

Cheap Flights from St Louis to Seattle, WA, United States - STL to SEA Last modified: Jun 28, 2016 7:50 AM

Popular flights from St Louis to Seattle Last modified: Jun 28, 2016 7:50 AM

We’ve got the inside scoop on finding the best time to fly for the best price. Not sure when to travel for your next vacation? Find details below on when-to-fly and when-to-buy.

Alaska
STLSEA
Sun 8/28
nonstop
SEASTL
Sun 9/4
nonstop
$293
Select
Alaska
STLSEA
Wed 9/14
nonstop
SEASTL
Sun 9/18
nonstop
$293
Select
Alaska
STLSEA
Wed 9/28
nonstop
SEASTL
Thu 10/6
nonstop
$293
Select
Alaska
STLSEA
Wed 9/28
nonstop
SEASTL
Tue 10/4
nonstop
$293
Select
Alaska
STLSEA
Tue 10/4
nonstop
SEASTL
Sat 10/8
nonstop
$293
Select
United
STLSEA
Mon 10/3
1 stop
SEASTL
Thu 10/6
1 stop
$302
Select
American
STLSEA
Sat 8/6
1 stop
SEASTL
Fri 8/19
1 stop
$310
Select
American
STLSEA
Sat 8/6
1 stop
SEASTL
Sat 8/20
1 stop
$310
Select
American
STLSEA
Sun 8/7
1 stop
SEASTL
Fri 8/19
1 stop
$310
Select
American
STLSEA
Tue 8/9
1 stop
SEASTL
Fri 8/12
1 stop
$310
Select
American
STLSEA
Tue 8/9
1 stop
SEASTL
Sat 8/13
1 stop
$310
Select
Frontier
STLSEA
Tue 8/9
1 stop
SEASTL
Sat 8/13
1 stop
$392
Select
Frontier
STLSEA
Wed 8/10
1 stop
SEASTL
Sat 8/13
1 stop
$392
Select

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

We have collected flight cost data from across the web for travel from St Louis to Seattle, and have found the average flight price for this trip to be $306.

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

Airlines can adjust prices for plane tickets from St Louis to Seattle 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 St Louis to Seattle

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

Non Stop versus 1-Stop
Advanced PurchaseNon StopOne Stop
< 7 days $620 $553
7-14 days $402 $334
14-21 days $402 $310
21-30 days $402 $334
30-60 days $312 $310
60-90 days $293 $310
90+ days $293 $301

Cheapest Day To Fly from St Louis to Seattle

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

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$310 $310 $293 $310 $310 $310 $293

Lowest Fares Chart By Month from St Louis to Seattle

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

Month Origin Destination Carrier Depart Date Return Date Stops Price
June St Louis Seattle United 6/30/16 7/6/16 1 $691
July St Louis Seattle United 7/18/16 7/22/16 1 $310
August St Louis Seattle Alaska 8/28/16 9/4/16 0 $293
September St Louis Seattle Alaska 9/14/16 9/18/16 0 $293
October St Louis Seattle Alaska 10/4/16 10/8/16 0 $293
November St Louis Seattle Alaska 11/10/16 11/15/16 1 $301
December St Louis Seattle United 12/14/16 12/31/16 1 $310
January St Louis Seattle United 1/3/17 1/10/17 1 $302

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

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 St Louis to Seattle.

Next 30 Days

SunMonTueWedThuFriSat
26 27 28 29 30 1 2
$832
3 4 5 6 7 8 9
$832
10 11 12 13 14 15 16
$497
17 18 19 20 21 22 23
$497 $457
24 25 26 27 28 29 30
$457 $497
31 1 2 3 4 5 6
$497
TIPSave $108 by flying into Vancouver instead of Seattle from St Louis

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

Your St Louis to Seattle 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 St Louis to Seattle is $333.

The average price for non-stop flights from St Louis to Seattle is $316.

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

Nonstop Flight Details from St Louis to Seattle
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
Alaska 2 2 2 2 2 2 2 07:05 18:35

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

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 St Louis to Seattle. 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 St Louis to Seattle is $150.

The average price for round trip flights from St Louis to Seattle is $326.

More Cheap Flights

FlightsAirlineLowest Price
Springfield to Seattle American, Alaska, United $326
Moline to Seattle American, Alaska, United $274
Peoria to Seattle American, United $274
Evansville to Seattle American, United $412
Bloomington - Normal to Seattle American $412
Springfield to Seattle American, United $314
Champaign to Seattle American $325
St Louis to Portland American, Alaska, Frontier, United $274
St Louis to Vancouver American, Air Canada, Alaska, Frontier, United, WestJet $350
St Louis to Las Vegas American, Alaska, Frontier, United $127
St Louis to Victoria American, Air Canada, Alaska, United, WestJet $350
St Louis to Los Angeles American, Alaska, Frontier, United $259
St Louis to San Francisco American, Alaska, Frontier, United $279
Springfield to Portland American, Alaska, United $412
Moline to Portland American, Alaska, United $384
St Louis to Bellingham American, Alaska, United $472
Bloomington - Normal to Portland American $384
Springfield to Vancouver American, Air Canada, Alaska, United, WestJet $524
St Louis to Chicago American, Alaska, United $219
Moline to Vancouver American, Air Canada, Alaska, United, WestJet $425
St Louis to Dallas - Ft Worth American, Alaska, United $209
Peoria to Vancouver American, United, WestJet $419
Peoria to Portland American, United $372
Evansville to Portland American, United $412
St Louis to Denver American, Alaska, Frontier, United $137
St Louis to Phoenix American, Alaska, United $317
St Louis to Wenatchee Alaska Check Dates
St Louis to Atlanta American, Alaska, Frontier, United $87
Champaign to Portland American $400
Springfield to Portland American, United $416

Airlines Flying from St Louis to Seattle (STL to SEA) Number of flights searched: 238Last modified: Jun 28, 2016 7:51 AM

Below are the different airlines that fly from St Louis to Seattle 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 St Louis to Seattle.

St Louis to Seattle
Airline Connections Mon Tue Wed Thu Fri Sat Sun
American DFW 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 ATL X X X X X X X
Frontier DEN X X X X
United DEN X X X X X X X
Southwest - X X X X X X X
Southwest MDW X X X X X X X

Airports for Your Route

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

St Louis to Seattle Flight Questions

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

Question: How long is a direct flight from St Louis to Seattle?
Answer: The average St Louis to Seattle flight time is 4 hours and 15 minutes.
Question: How many miles are there between St Louis and Seattle?
Answer: The distance from St Louis to Seattle is 1704 miles.
Question: How common are direct flights from St Louis to Seattle?
Answer: There are 14 direct flights from St Louis to Seattle.
Question: What is the most popular airline for non-stop flights from St Louis to Seattle?
Answer: Alaska Airlines provides 100% of the non-stop flights between St Louis and Seattle.
Question: What are the most popular connecting cities when flying from St Louis to Seattle?
Answer: Denver, CO
St Louis (STL) To Seattle, WA (SEA) Flights: Cheap Flights From St Louis To Seattle | FareCompare.