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.

$69 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

Sat, Nov 7 - Sat, Nov 14

5:50 am - 10:50 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

7h 00m1 stop Dallas Love Field

10:40 am - 6:15 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

5h 35m1 stop Denver Intl

$212Southwest

Wed, Oct 7 - Sat, Oct 10

2:38 pm - 10:05 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

9h 27m1 stop Detroit Metropolitan Wayne County

11:50 pm - 8:53 amSEA Seattle/Tacoma Intl-STL Lambert-St Louis

7h 03m1 stop Minneapolis St Paul

$217Delta

Sat, Dec 12 - Tue, Dec 15

7:26 am - 3:44 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

10h 18m1 stop Chicago O'Hare Intl

3:00 pm - 11:56 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

6h 56m1 stop Phoenix Sky Harbor Intl

$217American Airlines

Wed, Oct 21 - Sat, Oct 24

5:40 am - 11:14 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

7h 34m1 stop Dallas/Fort Worth

7:30 am - 6:20 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

8h 50m1 stop Dallas/Fort Worth

$217American Airlines

Sat, Nov 7 - Thu, Nov 12

5:50 am - 10:50 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

7h 00m1 stop Dallas Love Field

8:30 am - 7:00 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

8h 30m1 stop Austin Bergstrom

$217Southwest

Tue, Oct 6 - Sat, Oct 10

2:38 pm - 10:05 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

9h 27m1 stop Detroit Metropolitan Wayne County

11:50 pm - 8:53 amSEA Seattle/Tacoma Intl-STL Lambert-St Louis

7h 03m1 stop Minneapolis St Paul

$217Delta

Sun, Nov 22 - Thu, Nov 26

5:26 pm - 11:17 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

7h 51m1 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

Fri, Oct 30 - Sun, Nov 1

6:50 pm - 11:59 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

7h 09m1 stop Chicago O'Hare Intl

5:05 am - 12:38 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

5h 33m1 stop Denver Intl

$227United Airlines

Mon, Oct 5 - Tue, Oct 13

8:10 pm - 3:08 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

20h 58m1 stop Denver Intl

8:00 pm - 3:24 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

17h 24m2 stops Los Angeles Denver Intl

$265Frontier

Wed, Oct 7 - Tue, Oct 13

8:10 pm - 3:12 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

21h 02m1 stop Denver Intl

8:00 pm - 3:24 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

17h 24m2 stops Los Angeles Denver Intl

$269Frontier

Recent last minute flight deals from Missouri to Seattle

Thu, Sep 10 - Fri, Sep 11

10:30 pm - 9:42 amMCI Kansas City-SEA Seattle/Tacoma Intl

13h 12m1 stop Las Vegas Harry Reid Intl

4:27 pm - 7:37 pmSEA Seattle/Tacoma Intl-MCI Kansas City

25h 10m1 stop Denver Intl

$350Frontier

Thu, Sep 10 - Sun, Sep 13

10:30 pm - 9:42 amMCI Kansas City-SEA Seattle/Tacoma Intl

13h 12m1 stop Las Vegas Harry Reid Intl

9:45 pm - 9:45 pmSEA Seattle/Tacoma Intl-MCI Kansas City

22h 00m1 stop Las Vegas Harry Reid Intl

$352Frontier

Thu, Sep 10 - Thu, Sep 24

12:17 pm - 9:42 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

23h 25m1 stop Las Vegas Harry Reid Intl

8:13 am - 2:21 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

4h 08mnonstop

$417Multiple Airlines

Thu, Sep 10 - Thu, Sep 17

5:18 pm - 12:11 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

8h 53m1 stop Chicago O'Hare Intl

3:41 pm - 12:27 amSEA Seattle/Tacoma Intl-STL Lambert-St Louis

6h 46m1 stop Chicago O'Hare Intl

$451American Airlines

Wed, Sep 9 - Wed, Sep 16

4:08 pm - 9:52 pmSGF Springfield-Branson-SEA Seattle/Tacoma Intl

7h 44m1 stop Dallas/Fort Worth

6:15 am - 3:07 pmSEA Seattle/Tacoma Intl-SGF Springfield-Branson

6h 52m1 stop Chicago O'Hare Intl

$465American Airlines

Wed, Sep 9 - Sat, Sep 12

9:00 am - 6:29 pmCOU Columbia Regional-SEA Seattle/Tacoma Intl

11h 29m2 stops Denver Intl San Francisco

1:57 pm - 10:34 pmSEA Seattle/Tacoma Intl-COU Columbia Regional

6h 37m1 stop Chicago O'Hare Intl

$490United Airlines

Thu, Sep 10 - Sat, Sep 19

12:17 pm - 9:42 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

23h 25m1 stop Las Vegas Harry Reid Intl

8:13 am - 2:21 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

4h 08mnonstop

$494Multiple Airlines

Wed, Sep 9 - Sat, Sep 12

9:00 am - 6:29 pmCOU Columbia Regional-SEA Seattle/Tacoma Intl

11h 29m2 stops Denver Intl San Francisco

9:00 am - 8:39 pmSEA Seattle/Tacoma Intl-COU Columbia Regional

9h 39m2 stops San Francisco Denver Intl

$500United Airlines

Thu, Sep 10 - Thu, Sep 24

8:25 am - 10:45 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 20mnonstop

12:05 pm - 6:05 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

4h 00mnonstop

$505Southwest

Sat, Sep 5 - Sat, Sep 12

8:25 am - 4:50 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

10h 25m1 stop Austin Bergstrom

9:40 am - 3:30 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

3h 50mnonstop

$511Southwest

Recent direct flight deals from Missouri to Seattle

Mon, Sep 28 - Sat, Oct 3

7:24 am - 9:15 amMCI Kansas City-SEA Seattle/Tacoma Intl

3h 51mnonstop

5:40 pm - 11:16 pmSEA Seattle/Tacoma Intl-MCI Kansas City

3h 36mnonstop

$351Delta

Sat, Oct 3 - Tue, Oct 13

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

$357Alaska Airlines

Tue, Oct 6 - Sat, Oct 10

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

4h 33mnonstop

9:40 am - 3:44 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

4h 04mnonstop

$357Alaska Airlines

Thu, Oct 22 - Sat, Oct 24

7:00 am - 9:04 amMCI Kansas City-SEA Seattle/Tacoma Intl

4h 04mnonstop

5:55 pm - 11:31 pmSEA Seattle/Tacoma Intl-MCI Kansas City

3h 36mnonstop

$363Delta

Sat, Nov 7 - Sat, Nov 14

7:00 am - 9:38 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 38mnonstop

9:25 am - 3:21 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

3h 56mnonstop

$436Multiple Airlines

Wed, Feb 24 - Wed, Mar 3

7:00 am - 9:28 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 28mnonstop

8:32 am - 2:26 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

3h 54mnonstop

$437American Airlines

Tue, Nov 10 - Tue, Nov 17

7:00 am - 9:38 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 38mnonstop

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

4h 03mnonstop

$437American Airlines

Sat, Sep 19 - Sat, Sep 26

1:10 pm - 2:55 pmMCI Kansas City-SEA Seattle/Tacoma Intl

3h 45mnonstop

3:05 pm - 8:35 pmSEA Seattle/Tacoma Intl-MCI Kansas City

3h 30mnonstop

$465Southwest

Sat, Sep 26 - Sat, Oct 3

3:19 pm - 5:41 pmSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 22mnonstop

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

3h 56mnonstop

$471Multiple Airlines

Mon, Sep 21 - Thu, Sep 24

8:25 am - 10:45 amSTL Lambert-St Louis-SEA Seattle/Tacoma Intl

4h 20mnonstop

12:05 pm - 6:05 pmSEA Seattle/Tacoma Intl-STL Lambert-St Louis

4h 00mnonstop

$477Southwest

Useful Info

Low season	January
High season	July
Cheapest flight	$69

Best time to beat the crowds with an average 24% drop in price.

Most popular time to fly with an average 25% 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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$69 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