How does KAYAK find such low prices on flights from Missouri to Seattle?

KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Seattle.

How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Seattle?

KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Missouri is likely to change within 7 days, so travelers know whether to wait or book now.

What is the Hacker Fare option on flights from Missouri to Seattle?

Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Missouri with another airline.

What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Seattle?

Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

$75 CHEAP FLIGHTS from Missouri to Seattle

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Cheap Flights from Missouri to Seattle

Discover the best prices for you by selecting your travel dates on KAYAK.

Round-trip

One-way

Last minute

Direct

Recent round-trip flight deals from Missouri to Seattle

Mon, Oct 26 - Thu, Oct 29

1:30 pm - 10:59 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

23h 29m1 stop Las Vegas Harry Reid Intl

9:13 pm - 12:33 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

13h 20m1 stop Las Vegas Harry Reid Intl

$219Frontier

Thu, Nov 12 - Wed, Nov 18

1:28 pm - 9:45 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

22h 17m1 stop Las Vegas Harry Reid Intl

4:27 pm - 10:34 amSEA Seattle/Tacoma Intl-STL Lambert-St Louis

16h 07m2 stops Denver Intl Dallas/Fort Worth

$219Frontier

Mon, Oct 26 - Thu, Oct 29

5:50 pm - 12:40 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

8h 50m2 stops Nashville Intl Chicago Midway

8:05 am - 11:25 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

13h 20m1 stop Phoenix Sky Harbor Intl

$220Southwest

Tue, Nov 10 - Fri, Nov 13

7:26 am - 2:20 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

8h 54m1 stop Chicago O'Hare Intl

12:47 pm - 11:33 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

8h 46m1 stop Dallas/Fort Worth

$222American Airlines

Wed, Mar 3 - Mon, Mar 8

6:45 am - 2:23 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

9h 38m1 stop Detroit Metropolitan Wayne County

1:45 pm - 11:18 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

7h 33m1 stop Minneapolis St Paul

$222Delta

Tue, Dec 22 - Tue, Dec 29

5:16 pm - 11:53 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

8h 37m1 stop Minneapolis St Paul

5:20 am - 1:20 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

6h 00m1 stop Salt Lake City

$222Delta

Sat, Oct 24 - Mon, Oct 26

8:25 am - 8:30 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

14h 05m1 stop Sacramento Intl

12:10 am - 10:50 amSEA Seattle/Tacoma Intl-STL Lambert-St Louis

8h 40m1 stop Chicago Midway

$223Southwest

Thu, Nov 5 - Sun, Nov 8

8:10 am - 4:00 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

9h 50m1 stop Los Angeles

3:10 pm - 11:55 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

6h 45m1 stop Chicago O'Hare Intl

$227American Airlines

Sun, Nov 22 - Thu, Nov 26

5:28 pm - 11:07 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

7h 39m1 stop Chicago O'Hare Intl

7:00 am - 3:43 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

6h 43m1 stop Chicago O'Hare Intl

$227United Airlines

Thu, Nov 5 - Wed, Nov 11

8:00 am - 2:39 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

8h 39m1 stop San Francisco

7:00 am - 3:43 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

6h 43m1 stop Chicago O'Hare Intl

$229United Airlines

Recent last minute flight deals from Missouri to Seattle

Sat, Oct 10 - Sun, Oct 11

7:42 pm - 3:12 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

21h 30m1 stop Denver Intl

9:16 pm - 12:35 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

13h 19m1 stop Las Vegas Harry Reid Intl

$336Frontier

Sat, Oct 10 - Tue, Oct 13

7:42 pm - 3:12 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

21h 30m1 stop Denver Intl

4:27 pm - 3:24 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

20h 57m1 stop Denver Intl

$350Frontier

Mon, Oct 12 - Mon, Nov 2

12:46 pm - 7:44 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

8h 58m1 stop Dallas/Fort Worth

3:10 pm - 11:59 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

6h 49m1 stop Chicago O'Hare Intl

$396American Airlines

Mon, Oct 12 - Mon, Nov 2

5:50 pm - 12:40 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

8h 50m2 stops Nashville Intl Chicago Midway

9:25 pm - 12:00 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

12h 35m1 stop Las Vegas Harry Reid Intl

$407Southwest

Thu, Oct 15 - Mon, Oct 19

8:48 am - 4:48 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

10h 00m1 stop Dallas/Fort Worth

11:59 pm - 10:50 amSEA Seattle/Tacoma Intl-STL Lambert-St Louis

8h 51m1 stop Chicago O'Hare Intl

$422American Airlines

Mon, Oct 12 - Mon, Nov 2

5:50 pm - 12:40 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

8h 50m2 stops Nashville Intl Chicago Midway

11:20 am - 12:50 amSEA Seattle/Tacoma Intl-STL Lambert-St Louis

11h 30m2 stops Long Beach Municipal Las Vegas Harry Reid Intl

$460Southwest

Thu, Oct 15 - Mon, Oct 19

7:02 am - 9:35 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 33mnonstop

6:03 pm - 11:59 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

3h 56mnonstop

$485Alaska Airlines

Wed, Oct 14 - Thu, Oct 15

7:02 am - 9:35 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 33mnonstop

9:16 pm - 12:35 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

13h 19m1 stop Las Vegas Harry Reid Intl

$488Multiple Airlines

Sat, Oct 10 - Sun, Oct 11

6:02 am - 8:33 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 31mnonstop

9:16 pm - 12:35 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

13h 19m1 stop Las Vegas Harry Reid Intl

$488Multiple Airlines

Mon, Oct 12 - Mon, Nov 2

4:42 pm - 7:10 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 28mnonstop

6:07 pm - 11:59 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

3h 52mnonstop

$518Alaska Airlines

Recent direct flight deals from Missouri to Seattle

Sat, Nov 14 - Tue, Nov 17

6:00 am - 8:36 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 36mnonstop

8:22 am - 2:25 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

4h 03mnonstop

$231Alaska Airlines

Sat, Oct 24 - Tue, Oct 27

6:02 am - 8:33 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 31mnonstop

6:03 pm - 11:59 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

3h 56mnonstop

$234Alaska Airlines

Sat, Oct 24 - Wed, Oct 28

6:02 am - 8:33 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 31mnonstop

6:03 pm - 11:59 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

3h 56mnonstop

$234Alaska Airlines

Wed, Dec 23 - Tue, Dec 29

7:15 am - 9:36 amMCI Kansas City-SEA Seattle/Tacoma Intl

4h 21mnonstop

6:20 pm - 11:51 pmSEA Seattle/Tacoma Intl-MCI Kansas City

3h 31mnonstop

$277Delta

Wed, Dec 2 - Wed, Dec 9

7:00 am - 9:21 amMCI Kansas City-SEA Seattle/Tacoma Intl

4h 21mnonstop

5:54 pm - 11:23 pmSEA Seattle/Tacoma Intl-MCI Kansas City

3h 29mnonstop

$277Delta

Mon, Dec 7 - Sun, Dec 13

7:00 am - 9:21 amMCI Kansas City-SEA Seattle/Tacoma Intl

4h 21mnonstop

5:54 pm - 11:23 pmSEA Seattle/Tacoma Intl-MCI Kansas City

3h 29mnonstop

$277Delta

Wed, Feb 10 - Wed, Feb 17

3:54 pm - 6:26 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 32mnonstop

8:15 am - 2:06 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

3h 51mnonstop

$341American Airlines

Tue, Dec 22 - Wed, Dec 30

6:04 am - 8:46 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 42mnonstop

9:41 am - 3:34 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

3h 53mnonstop

$341American Airlines

Fri, Oct 23 - Mon, Oct 26

7:00 am - 9:05 amMCI Kansas City-SEA Seattle/Tacoma Intl

4h 05mnonstop

5:00 pm - 10:25 pmSEA Seattle/Tacoma Intl-MCI Kansas City

3h 25mnonstop

$537Southwest

Fri, Oct 23 - Mon, Oct 26

7:00 am - 9:05 amMCI Kansas City-SEA Seattle/Tacoma Intl

4h 05mnonstop

5:00 pm - 10:25 pmSEA Seattle/Tacoma Intl-MCI Kansas City

3h 25mnonstop

$584Southwest

Useful Info

Low season	January
High season	July
Cheapest flight	$75

Best time to beat the crowds with an average 26% drop in price.

Most popular time to fly with an average 23% increase in price.

Flight from St. Louis to Seattle

How does KAYAK find such low prices on flights from Missouri to Seattle?
KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Missouri to Seattle.
How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Missouri to Seattle?
KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Seattle from Missouri is likely to change within 7 days, so travelers know whether to wait or book now.
What is the Hacker Fare option on flights from Missouri to Seattle?
Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Seattle with an airline and back to Missouri with another airline.
What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Missouri to Seattle?
Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Seattle from Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Lynnwood

Centralia

Fife

Lakewood

Westport

Lacey

Mukilteo

Woodinville

Poulsbo

Edmonds

Aberdeen

DuPont

Shoreline

Monroe

Castle Rock

Edgewood

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$75 Find Cheap Flights from Missouri to Seattle - Compare and Save

Cheap Flights from Missouri to Seattle

Recent round-trip flight deals from Missouri to Seattle

Recent one-way flight deals from Missouri to Seattle

Recent last minute flight deals from Missouri to Seattle

Recent direct flight deals from Missouri to Seattle

Good to know

Low season

High season

Cheapest flight

FAQs for booking flights from Missouri to Seattle

Traveling to a place near Seattle?

More options for your flight to Seattle

Complete your trip to Seattle with a hotel stay or car rental

Information on the airport you'll fly into in Seattle

Cabin class types available on flights to Missouri

Find direct flights for Seattle

Flights from domestic origins to Seattle

Flights to other popular destinations

Find deals for your return flight