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Did you mean flights from Seattle to St Louis?

Flights from St Louis to Seattle, United States

TIPSave $157 by flying into Vancouver instead of Seattle from St Louis

St Louis to Seattle Last modified: Oct 21, 2017 1:21 -04:00Prices shown were found by travelers like you over the past 30 days

We've scanned 54,072,693,341 round trip itineraries and found the cheapest flights to Seattle. Alaska & United frequently offer the best deals to Seattle flights, or select your preferred carrier below to see the cheapest days to fly.

Alaska
STLSEA
Wed 1/10
nonstop
SEASTL
Wed 1/17
nonstop
$197
United
STLSEA
Wed 1/10
1 stop
SEASTL
Wed 1/17
1 stop
$214
American
STLSEA
Wed 1/10
1 stop
SEASTL
Wed 1/17
1 stop
$230
Frontier
STLSEA
Tue 11/14
1 stop
SEASTL
Tue 11/21
1 stop
$275

How Much is a Flight from St Louis to Seattle? Prices shown were found by travelers like you over the past 30 days

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 $248.

Where To Buy Cheap Flights from St Louis to Seattle?

The best way to find a great deal on airfare is to search multiple sites. When you run a search on FareCompare, we search multiple sites and fare sources all at once so you don't have to - which is why we think FareCompare is the best place to find cheap tickets. Airlines can adjust prices for 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 found that Tuesdays, Wednesdays, and Saturdays are often the best days to book flights. If you'd like to learn more, read our article about the best time to buy airline tickets.

How far in advance should I book tickets from St Louis to Seattle? Prices shown were found by travelers like you over the past 30 days

The chart below shows up-to-date information regarding how far in advance to book your flight from St Louis to Seattle.

Non Stop versus Connecting
Advanced PurchaseNon StopConnecting
< 7 days $613 $617
7-14 days $393 $410
14-21 days $329 $337
21-30 days $329 $275
30-60 days $329 $337
60-90 days $197 $214
90+ days $197 $214

Cheapest Day To Fly from St Louis to Seattle Prices shown were found by travelers like you over the past 30 days

We've examined 55,322,585,954 itinerary searches that we've seen for departures in the next 90 days and found that the cheapest day to fly from St Louis to Seattle is Wednesday. See the chart below to compare prices for other days of the week.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$329$275$197$207$207$207$310

Compare Flight Prices from St Louis to Seattle by Month Prices shown were found by travelers like you over the past 30 days

Low priced flights are most commonly available by purchasing between one and three months in advance. International or holiday flights may need to be purchased even further in advance. The chart below shows the cheapest flight prices by month for St Louis to Seattle flights.

Month Origin Destination Carrier Depart Date Return Date Stops Price
October St Louis Seattle United 10/30/17 11/12/17 1 $446
November St Louis Seattle Frontier 11/14/17 11/21/17 1 $275
December St Louis Seattle Alaska 12/2/17 12/4/17 0 $329
January St Louis Seattle Alaska 1/10/18 1/17/18 0 $197
February St Louis Seattle Alaska 2/7/18 2/14/18 0 $197
March St Louis Seattle Frontier 3/8/18 3/15/18 1 $310
April St Louis Seattle Frontier 4/5/18 4/9/18 1 $310
May St Louis Seattle Frontier 5/2/18 5/12/18 1 $310

Cheap Last Minute Flights from St Louis to Seattle Prices shown were found by travelers like you over the past 30 days

Looking for cheap last minute flights or a weekend getaway? We've got you covered with weekend flight deals from St Louis to Seattle. The chart below shows the best last minute deals and cheap flights this weekend we could find.

Next 30 Days

SunMonTueWedThuFriSat
22 23 24 25 26 27 28
$613
29 30 31 1 2 3 4
$613 $346
5 6 7 8 9 10 11
$346 $329
12 13 14 15 16 17 18
$329 $329
19 20 21 22 23 24 25
$329 $373
26 27 28 29 30 1 2
$373

Connecting Flights vs Direct Flights from St Louis to Seattle Prices shown were found by travelers like you over the past 30 days

Flights between some cities may be significantly cheaper if you choose 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 $318.

The average price for direct flights from St Louis to Seattle is $385.

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

Weekly Direct Flights from St Louis to Seattle - By Carrier
CarrierMonTueWedThuFriSatSunEarliest FlightLatest Flight
Alaska 2 2 2 2 2 2 1 06:00 19:20
Major Airlines 1 2 2 1 2 1 1 13:40 14:15

One Way Flights vs Round Trip Flights from St Louis to Seattle Prices shown were found by travelers like you over the past 30 days

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 $164.

The average price for round trip flights from St Louis to Seattle is $309.

St Louis to Seattle Flight Questions

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

Question: How long is the flight from St Louis to Seattle?
Answer: The average St Louis to Seattle flight time is 4 hours and 28 minutes.
Question: How far is Seattle from St Louis?
Answer: The distance from St Louis to Seattle is 1,704 miles (2,742 kilometers).
Question: How common are direct flights from St Louis to Seattle?
Answer: There are 15 direct flights from St Louis to Seattle.
Question: What are the most popular St Louis airlines for direct flights from St Louis to Seattle?
Answer: Alaska Airlines provides 53% 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: Chicago, IL

Airlines in St Louis flying to Seattle Last modified: Oct 21, 2017 1:21 -04:00Number of routes searched: 134Number of itineraries searched: 375,386

Wondering which airlines fly out of St Louis to Seattle? We've gathered the average price of St Louis airlines with flights to Seattle. Different airlines offer different levels of comfort and service, so consider convenience when choosing your airline.

Below is the full flight schedule summary showing which days of the week individual carriers offer flights for the next 30 days.

St Louis to Seattle
Airline Connections Mon Tue Wed Thu Fri Sat Sun
Alaska -
American CLT
American DFW
American LAX
American MIA
American ORD
Alaska LAX
Alaska PDX
Alaska SAN
Major Airlines ATL
Major Airlines DTW
Major Airlines MSP
Major Airlines SLC
Frontier DEN
United DEN
United EWR
United IAD
United IAH
United ORD

St Louis to Seattle Airports

These are the major commercial airports we're currently monitoring in St Louis and Seattle. If your route includes a city with multiple airports, you may be able to find substantial savings by choosing an alternate airport.

Farecompare Research Tools

FareCompare's Flight Schedule Search Tool helps you find information about airline schedule filings, including flight numbers, depart times, and travel distance.

Cheap Flights from St Louis to Seattle