$126 Find Cheap Flights from Seattle to Missouri

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Missouri departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

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These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Missouri.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Missouri.
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Flight Deals

Cheap Flights from Seattle to Missouri

Cheapest round-trip prices found by our users on KAYAK in the last 72 hours
St. Louis
St. Louis1 stop$377
Kansas City
Kansas Citynonstop$377
Springfield
Springfield1 stop$349
Columbia
Columbia1 stop$338
Joplin
Joplin1 stop$444
St. Louis
St. Louis1 stop$377
Kansas City
Kansas Citynonstop$377
Springfield
Springfield1 stop$349
Columbia
Columbia1 stop$338
Joplin
Joplin1 stop$444

Book Cheap Seattle to Missouri Plane Tickets

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Missouri that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Missouri

Wed, Oct 21 - Mon, Oct 26
American Airlines Logo
1:17 am - 11:07 am
SEA
-
COU
7h 50m
1 stop
American Airlines Logo
5:17 pm - 12:15 am
COU
-
SEA
8h 58m
1 stop
$338American Airlines
Sat, Sep 26 - Sat, Oct 3
American Airlines Logo
11:57 pm - 10:08 am
SEA
-
SGF
8h 11m
1 stop
American Airlines Logo
9:38 am - 4:42 pm
SGF
-
SEA
9h 04m
1 stop
$349American Airlines
Sat, Aug 15 - Sat, Aug 22
Delta Logo
5:30 pm - 11:02 pm
SEA
-
MCI
3h 32mnonstop
Delta Logo
7:42 am - 2:50 pm
MCI
-
SEA
9h 08m
1 stop
$377Delta
Sat, Oct 10 - Tue, Oct 13
Delta Logo
11:53 pm - 8:48 am
SEA
-
STL
6h 55m
1 stop
Delta Logo
5:30 pm - 11:59 pm
STL
-
SEA
8h 29m
1 stop
$377Delta
Mon, Jul 20 - Mon, Jul 27
Frontier Logo
7:06 pm - 1:00 pm
SEA
-
MCI
15h 54m
1 stop
Frontier Logo
4:32 pm - 5:51 pm
MCI
-
SEA
27h 19m
2 stops
$378Frontier
Fri, Oct 9 - Sat, Oct 10
United Airlines Logo
12:00 pm - 10:30 pm
SEA
-
STL
8h 30m
1 stop
United Airlines Logo
5:10 am - 10:01 am
STL
-
SEA
6h 51m
1 stop
$379United Airlines
Wed, Jul 8 - Sun, Jul 12
Frontier Logo
8:13 pm - 3:47 pm
SEA
-
MCI
17h 34m
1 stop
Frontier Logo
4:32 pm - 10:39 am
MCI
-
SEA
20h 07m
1 stop
$379Frontier
Fri, Aug 7 - Wed, Aug 19
Alaska Airlines Logo
6:27 pm - 11:59 pm
SEA
-
MCI
3h 32mnonstop
Alaska Airlines Logo
2:48 pm - 6:51 pm
MCI
-
SEA
6h 03m
1 stop
$381Alaska Airlines
Tue, Sep 22 - Wed, Sep 23
United Airlines Logo
11:03 am - 10:00 pm
SEA
-
STL
8h 57m
2 stops
United Airlines Logo
9:43 am - 4:07 pm
STL
-
SEA
8h 24m
1 stop
$384United Airlines
Thu, Aug 13 - Mon, Aug 17
Alaska Airlines Logo
7:48 am - 1:21 pm
SEA
-
MCI
3h 33mnonstop
Alaska Airlines Logo
2:17 pm - 4:17 pm
MCI
-
SEA
4h 00mnonstop
$385Alaska Airlines
Booking Insights

KAYAK's insights & trends for Seattle to Missouri flights

Get data-powered insights and trends into flights from Seattle to Missouri to help you find the cheapest flights, the best time to fly and much more.

How much is a round-trip flight from Seattle to Missouri?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Seattle to Missouri departing in August.

What is the cheapest Seattle to Missouri flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The cheapest ticket to Missouri from Seattle found in the last 5 days was to Kansas City, at $368 round-trip. The most popular route is from Seattle (SEA) to Kansas City (MCI), and the cheapest round-trip airline ticket found on this route in the last 5 days was $368.

What is the cheapest time of day to fly to Missouri?

The average price for all round-trip flights from Seattle to Missouri depending on the time of departure, clicked by users on KAYAK in the last 2 weeks.

The cheapest time of day to fly to Missouri is generally in the morning, when round-trip flights cost $430 on average. Morning departures are around 6% cheaper than evening flights, on average. The most expensive time of day to fly to Missouri is generally in the afternoon, which is peak travel time and where the average cost of a ticket is $507.

Can I save money by flying with a layover from Seattle to Missouri?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

No, with an average price for the route of $505, prices are generally cheapest when you fly direct.

What is the cheapest month to fly from Seattle to Missouri?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Missouri, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Missouri is January, when tickets cost $88 (return) on average. On the other hand, the most expensive months are June and December, when the average cost of round-trip tickets is $202 and $176 respectively.

What’s the cheapest day of the week to fly from Seattle to Missouri?

The average price of all round-trip flights from Seattle to Missouri clicked on KAYAK for each day over the last 12 months.

For Seattle to Missouri, Tuesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Missouri back to Seattle, the best deals are generally found on Thursday, with Monday being the most expensive.

How far in advance should I book a flight from Seattle to Missouri?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Missouri, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Missouri, you should book around 4 weeks before departure, which saves you about 47% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 15 weeks before departure.

Good to know

Low seasonJanuary
Cheapest flight$126
Best time to beat the crowds with an average 25% drop in price.
Most popular time to fly with an average 14% increase in price.
Flight from Seattle to Kansas City

Flights from Seattle to Missouri: the best tips from KAYAK users

Insights shared by verified travelers who flew the route from Seattle to Missouri 
Verified travelerFlew with Alaska Airlines
SEA
-
STL
Jul 2025
Give yourself extra time. Love the self check in options.
Verified travelerFlew with Alaska Airlines
SEA
-
MCI
Oct 2024
TSA lines in Seattle can get very long early in the day. Also, plan to return your rental car early since you have to take a shuttle bus to the terminal and those lines can get long early in the day, too. Currently there is construction in the North Terminal, so be prepared for moving around barriers. The day I flew out, the escalators were not working.
Verified travelerFlew with Alaska Airlines
SEA
-
STL
Feb 2024
Be sure to measure your wheels for carry on my luggage was the correct size but the wheels made it over so had to check my bag wasn't happy about that since you have to pay for checked should at least get one free.

FAQs - booking Missouri flights

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

    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 Seattle to Missouri.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight from Seattle to 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 Seattle to Missouri?

    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 from Seattle to Missouri with an airline and back with another airline.

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

    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 from Seattle to Missouri up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top 5 airlines serving from Seattle to Missouri

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Missouri. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Missouri? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
7.9
Alaska AirlinesOverall score based on 12563 reviews
8.5Crew
7.0Food
8.1Boarding
7.0Entertainment
7.8Comfort
Airline reviews

Someone rebooked my Alaska flight to a much later Delta flight. Now I am sitting at the Seattle airport after a long international flight and have to wait another 4 hours even though I would have been able to catch my initial flight

2.0 MediocreAnonymous, Jun 2026
SEA - EUG
Read more Alaska Airlines reviews

Someone rebooked my Alaska flight to a much later Delta flight. Now I am sitting at the Seattle airport after a long international flight and have to wait another 4 hours even though I would have been able to catch my initial flight

I was very surprised that at the Seattle airport, Alaska's main hub, that the gates were very small and very close together, and it was very hard to discourage between my flight, and the flight next to us going to Boise and the flight next to that going to Denver. Denver. The audio for all three Gates was at the same level, and almost impossible to differentiate unless they actually said their flight number and location. Location. People tried to get on our plane, before they were ready, because they were confused about the Denver announcements. We were on a Boeing 737- 800 00, that must have recently been redone. It actually had USB--c ports which really surprised me. The Apu was out on the plane, so when we got on it was very very hot. A lot of people were complaining. The gate agents were very professional, but it was a lot going on and even though there were two of them, I think they could have used another person to help them. Mandy was particularly helpful in getting me a window seat. Flight crew was up to the usual Alaska airline standard, which is very high. Can we please get another snack then garlic pretzels? It would also be nice, if they knew ahead that the flight was full, to offer to let us check in our bags for free at baggage check, and not at the gate!

On time, good seats, not overly full, up beast positive crew.

Airport security lines in Seattle were awful. The only staff that was pleasant and made the trip more enjoyable was the young woman at the gate in Seattle. She was so pleasant and helpful. Flight attendant on the plane seemed like she would rather be anywhere but on that plane.

People were friendly. Flight was a little delayed. Maybe I missed the reason for it. Overall a nice experience.

Crews were friendly enough. To help the airline I checked my carry on baggage. Typical "gonna be a full flight we need 19 carry on bags to be checked to help out". So I helped out only to have to wait 30+ mins for my luggage and risked not getting to my car rental on time. The return flight was delayed. Kept hearing employees say something about "they didn't have any power" which is kind of concerning. The air flow and air conditioning was insufficient. It was warm and stuffy during the flight. Plus no free wi-fi......Booooooo!

Didn’t even get on, check my flight to Seattle for details. Do better Alaska.

A five hour nonstop flight traveling over a few time zones and over the dinner hour and you get a small bag of pretzels. And no screens to watch movies. I

The flight kept getting delayed due to a maintenance issue. That happens, but there is no excuse for changing the gate FIVE TIMES, including one time nearly all the way across SeaTac. After we were delayed for 3+ hours, they did send us (via email) a $12 meal voucher...except you can't find a $12 meal anywhere in that airport, unless you consider a bag of M&M's and a bottle of water a meal. The plane had one problem after another but finally took off 4.5 hours late. This caused us to miss our hotel shuttle at ORD (they didn't run past midnight and it was 3 am) so we had to wait 25 minutes and pay for an Uber. I did get a $50 flight voucher from Alaska...big deal. Barely covers my Uber ride that I shouldn't have needed.

I upgraded to a better seat and it was much more comfortable. Nobody serves food anymore and actually on a 2+ hr flight not necessary. I didn’t even get water.

The flight was late. The crew was rude. There was no food. Cramped and uncomfortable. Nothing about this flight was good.

Crew was rude, flight was late, wifi didn't work, no food, basically nothing about this flight was good.

It was just okay, no frills, basic transportation with no luxury. No screens on the seats, no water or drinks on a short flight. Full flight but at least it was on time.

Flight was constantly delayed with significant changes in time, it was supposed to get to Colorado Springs at 8:30 PM but it got there after midnight.

Over a 3 hour flight. The turbulence was almost imperceptible except for 2 short periods which were not bad and over quickly. The attendants claimed "Safety first" and sat looking at their phones for 3 hours with no drink or snack service. This isn't the first time with Southwest. I thinkit may be there new plan of operation. Oh, and it was June 18, Southwest's Birthday which offered free drinks. NOT.

Flight was delayed, full flight and I had to change gates. Southwest flights are always late later in the day.

Flight was delayed over 3 hours. Planes were dirty. Staff indifferent. And they serve vegan pretzels as snacks.

It was great. The gate staff were very helpful in Portland when my son forgot his rolling bag and had to go back to get it just in time to make it on the plane. We really appreciate that. Great job!

Airline is not very senior friendly. Flights are late, forcing us to run to the connecting flight. Food is awful. Wish they would go back to pretzels and peanuts. During flight, pressurization isn’t quite right and all of our ears get plugged. Everything is nickel and dime, charging for boarding, seat selection and legroom. While a screen at the desk in the gate area says check your roll on bag now for free due to space limitation, the employee at the desk will not check the bag without a $100 fee. Insane.

Kayak could’ve posted the correct gate number. Almost missed my flight.

Love me some Delta. One of the few airlines to recognize and support veterans. Easy boarding, flight was on time and arrived early and the flight attendants were excellent on this flight.

I thought the service was very nice and pleasant. There were no hiccups and no issues so overall a good experience.

Very good flight. Crew was great. No issues and we even arrived early.

We sat on the runway for over an hour before departure. That was unwelcome.

The Boarding process was great. Particularly since my wife and I require assistance. The flight attendants were amazing. We travel frequently; they honestly were a cut above. 😀

Crew was nice, meal was good. Entertainment had to be rebooted 3 times and still did not work. Turns out there was residue on screen, it needed to be cleaned to prevent the touchscreen buttons from continuously activating. I had entertainment for the last 45 minutes of a 5 hour 45 minute flight. Really unacceptable for first class. Flight attendent indicated your cleaning solution creates this problem. Seems as if this is widely known, you should be using a different product or cleaning better. Really really disappointing which simply added to the wi fi on your planes with reliably never ever works.

Snacks and included beverages were appreciated. Boarding went smoothly. Plenty of overhead bin space. Seats get very uncomfortable after a couple of hours. After waiting 10 painful minutes for my walker, a very nice Delta guest agent pushed me in a wheelchair to the gate. It was finally delivered to me after another 15 minutes . Our checked bag was on the carousel long b4 I was able to retrieve it. Fortunately it was still there but somewhere along the way the straps we used to secure it were removed and and were not reattached. Wish I had made note of the agents name.

It was fine. 55 minute flight. No snacks or beverage service offered. Boarding went smoothly and my walker was waiting for me on the jet way.

The cabin temperature was nice and cool. The wifi was not working.

Could not get my connecting flight boarding pass until four hrs before departure! Ver annoying especially since the staff could not explain why!

Great experience. Boarding was fast, staff were very nice and funny, everything at the seat worked well.

Boarding was great, and the crew were very friendly. The seats must have been a bit on the older side and you could feel some of the seat components through the padding. Also, the plugs did not work on the row's entertainment screen or charging ports. Checked bag was transferred for connecting flight, and we appreciated how early we had the connecting gate information.

Lost one piece of luggage even though I checked in 2.5 hours before the flight

For the expense of first class, the seats could have been nicer and higher tier snacks would have been nice.

The boarding process on the departure from LA was rather slow even though I was in Group 1. For first class, I was not expecting to have to pay for Wi-fi but I did and then the wi-fi was spotty. The entree was surprisingly good and so that was a pleasant surprise. However, once I got to Houston, it was terrible. Unfortunately there was bad weather but the constant gate changes for my connecting flight was difficult to manage due to having to navigate back and forth between different terminals.

They delayed the flight 3 hours because it wasn't full they moved us to 5 different gates probably the worst airline ever not even spirit is this bad.

Very easy ! Use the kiosk and bag drop and right to security within 10 min

Checking bag at terminal was horrible. No agents to check us in and only 1 kiosk working. Boarding went ok. Crew onboard was very scattered rained. Missed our row while serving and then didn’t see them hardly again.

Crew was amazing, takeoff wonderful. The bathroom was disgusting from before takeoff the odor made the flight uncomfortable as you could smell the bathroom from the center of the plane where we were sitting. Smelled like raw sewage. My daughter was throwing up as we landed due to the smell and horrible turbulence as we approached Newark.

Airline tickets are not cheap. You expect reliable competent service. Thanks to canceled flights and botched transfers we arrived at our destination two days late. This is not acceptable

My experience with American Airlines was great. Unfortunately my stroller was not located and has not been given to me and or reached out in return for in regard to information.

Pilots were fantastic - super smooth. First Class flight attendant was very attentive. Main Cabin flight attendant should try to smooth the rough edges of her voice - very shrill / punitive. Hurt my ears just to listen to her. Recognize they have a (tough) job to do - but tone over speakers needs to be less like scolding a 5 year old.

Maybe focus more on delivering a good product vs selling me a damn credit card

American Airlines is a great dependable airline, on time arrival and departure with polite crew and staff.

I think since I am an AA Advantage member, my checked bags should have been free, but I paid for all 4 of us.

This flight moved Gates several times in a short time period, from B to C, which required a substantial walk or rail ride. Then the flight was delayed more than 2 hours and the food was subpar compared to other flights.

Flight was delayed multiple times without giving any particular reason and the only thing that was communicated was that 'Aircraft is getting ready'. I was stuck at SFO airport for 15 hours and finally took Southwest Airlines flight back home to Dallas.

Hydraulic leak caused the flight to be cancelled. Auto system scheduled us on a 3 am flight. Wevhsedvrebook on the app and hit schedules later in the afternoon. Our luggage per gate and ticket agent would be rescanned and put in our new flight. Did not happen. Our luggage stayed in hsv. Baggage claim in wash dc unable to help. We filed a claim. Several emails about our luggage were in conflict with one another. Called as baggage and was on hold 30 minutes. Oscar said one of 2 was out fir delivery then cancelled. About 45 minutes later both pieces were delivered. Their system is suspect

I was not clear if food was offered or not.

Flight cancelled. Twice. And no communication. No gate agent. Went past boarding time and had to go and see email from AA. Airport communication was bad

Everything you need to know for your flight from Seattle to Missouri

Information on your arrival and departure airports