Flights from St Louis to Seattle, United States

Did you mean flights from Seattle to St Louis?

St Louis to Seattle Last modified: Mar 26, 2024 18:35 -04:00

We've scanned 117,220,093 round trip itineraries and found the cheapest flights to Seattle. American & Major Airlines frequently offer the best deals to Seattle flights, or select your preferred carrier below to see the cheapest days to fly.

Fri 5/3
1 stop
Sat 5/4
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Major Airlines
Fri 4/19
1 stop
Sun 4/21
1 stop
Thu 4/18
1 stop
Wed 4/24
1 stop
Wed 4/17
Sat 4/20
Fri 4/26
1 stop
Tue 4/30
1 stop
Tue 4/23
1 stop
Sat 4/27
1 stop

How Much is a Flight from St Louis to Seattle?

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 $156.

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?

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 $398 $227
7-14 days $198 $199
14-21 days $198 $155
21-30 days $198 $155
30-60 days $198 $155
60-90 days $208 $170
90+ days $217 $185

Cheapest Day To Fly from St Louis to Seattle

We've examined 234,440,186 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 Sunday. See the chart below to compare prices for other days of the week.

Monday Tuesday Wednesday Thursday Friday Saturday Sunday
$155$155$156$155$155 $155

Cheap Last Minute Flights from St Louis to Seattle

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

7 8 9 10 11 12 13
14 15 16 17 18 19 20
$238 $198
21 22 23 24 25 26 27
$198 $155
28 29 30 31 1 2 3
$155 $155
4 5 6 7 8 9 10
$155 $155
11 12 13 14 15 16 17

Connecting Flights vs Direct Flights from St Louis to Seattle

Looks like something's not right... we're not seeing expected schedules from St Louis to Seattle. Run an airfare search now to update and compare prices. Find Flights

One Way Flights vs Round Trip Flights from St Louis to Seattle

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. Find Flights

St Louis to Seattle Flight Questions

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