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Cheap flights from Washington to Missouri from $81

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Missouri departing on 6/30. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from Washington to Missouri

Cheap round-trip flights

Enter your travel dates to find the best prices.
Frontier Logo
3:19 pm - 1:00 pm
SEA
-
MCI
19h 41m
1 stop
Frontier Logo
1:45 pm - 9:48 am
MCI
-
SEA
22h 03m
1 stop
$234Frontier
Wed, Aug 19 - Sat, Aug 22
Frontier Logo
8:42 pm - 2:06 pm
PDX
-
STL
15h 24m
1 stop
Frontier Logo
7:46 pm - 7:47 pm
STL
-
PDX
26h 01m
1 stop
$238Frontier
Fri, Jun 12 - Wed, Jun 17
Alaska Airlines Logo
1:25 pm - 7:01 pm
SEA
-
MCI
3h 36mnonstop
Alaska Airlines Logo
2:51 pm - 4:54 pm
MCI
-
SEA
4h 03mnonstop
$247Alaska Airlines
Wed, Jun 3 - Sat, Jun 6
Southwest Logo
5:35 pm - 1:40 am
SEA
-
MCI
6h 05m
1 stop
Southwest Logo
9:15 pm - 1:40 am
MCI
-
SEA
6h 25m
1 stop
$252Southwest
Thu, Jun 4 - Thu, Jun 11
Delta Logo
5:30 pm - 11:08 pm
SEA
-
MCI
3h 38mnonstop
Delta Logo
3:55 pm - 12:06 am
MCI
-
SEA
10h 11m
1 stop
$257Delta
Thu, Jun 4 - Thu, Jun 11
Delta Logo
2:55 pm - 11:49 pm
SEA
-
MCI
6h 54m
1 stop
Delta Logo
7:26 am - 2:54 pm
MCI
-
SEA
9h 28m
1 stop
$267Delta
Wed, Jun 17 - Tue, Jun 23
Southwest Logo
7:45 pm - 12:55 pm
SEA
-
MCI
15h 10m
2 stops
Southwest Logo
6:30 pm - 1:40 am
MCI
-
SEA
9h 10m
1 stop
$268Southwest
Mon, Jun 1 - Fri, Jun 5
Alaska Airlines Logo
12:45 pm - 6:45 pm
SEA
-
STL
4h 00mnonstop
Alaska Airlines Logo
7:41 pm - 10:11 pm
STL
-
SEA
4h 30mnonstop
$317Alaska Airlines
Wed, Jun 3 - Sat, Jun 6
American Airlines Logo
9:47 pm - 10:57 am
PDX
-
SGF
11h 10m
1 stop
American Airlines Logo
7:30 pm - 12:49 am
SGF
-
PDX
7h 19m
1 stop
$336American Airlines
Thu, May 28 - Sun, May 31
American Airlines Logo
11:43 pm - 10:30 am
PDX
-
SGF
8h 47m
1 stop
American Airlines Logo
6:43 pm - 12:50 am
SGF
-
PDX
8h 07m
1 stop
$349American Airlines
Tue, Jun 2 - Sat, Jun 6

Frontier flights from State of Washington to Missouri

Our best Frontier deals on State of Washington to Missouri flight tickets
Frontier
Aug 19
SEA3:19 pmSeattle/Tacoma Intl
19h 41m
1 stop
MCI1:00 pmKansas City
Aug 22
MCI1:45 pmKansas City
22h 03m
1 stop
SEA9:48 amSeattle/Tacoma Intl
$234
Frontier
Jun 12
PDX8:42 pmPortland
15h 24m
1 stop
STL2:06 pmLambert-St Louis
Jun 17
STL7:46 pmLambert-St Louis
26h 01m
1 stop
PDX7:47 pmPortland
$238
Frontier
Jun 9
PDX5:20 pmPortland
17h 40m
1 stop
MCI1:00 pmKansas City
Jun 16
MCI1:45 pmKansas City
28h 50m
1 stop
PDX4:35 pmPortland
$239

American Airlines flights from State of Washington to Missouri

Our best American Airlines deals on State of Washington to Missouri flight tickets
American Airlines
Jun 3
PDX1:45 pmPortland
8h 29m
1 stop
STL12:14 amLambert-St Louis
Jun 6
STL7:21 pmLambert-St Louis
7h 29m
1 stop
PDX12:50 amPortland
$309
American Airlines
Jun 3
PDX1:45 pmPortland
8h 29m
1 stop
STL12:14 amLambert-St Louis
Jun 6
STL5:03 pmLambert-St Louis
9h 17m
1 stop
PDX12:20 amPortland
$317
American Airlines
Jun 10
SEA11:58 pmSeattle/Tacoma Intl
6h 33m
1 stop
STL8:31 amLambert-St Louis
Jun 14
STL5:29 amLambert-St Louis
7h 20m
1 stop
SEA10:49 amSeattle/Tacoma Intl
$329

momondo Fare Finder

 
Customize your flight search to find flights from State of Washington to Missouri that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, momondo users made 832,500 searches. Data last updated May 11, 2026.
Use the filters below to find and compare flights from Washington to Missouri that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Wed 8/19

3:19 pm-1:00 pm

1 stop19h 41m

Kansas City

Sat 8/22

1:45 pm-9:48 am

1 stop22h 03m

$234

PortlandSt. Louis

PDX - STL

PDXSTL

Portland

Fri 6/12

8:42 pm-2:06 pm

1 stop15h 24m

Lambert-St Louis

Wed 6/17

7:46 pm-7:47 pm

1 stop26h 01m

$238
Quickest round-trip

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Wed 6/3

1:25 pm-7:01 pm

Nonstop3h 36m

Kansas City

Sat 6/6

2:51 pm-4:54 pm

Nonstop4h 03m

$247

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Thu 6/4

5:35 pm-1:40 am

1 stop6h 05m

Kansas City

Thu 6/11

9:15 pm-1:40 am

1 stop6h 25m

$252

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Thu 6/4

5:30 pm-11:08 pm

Nonstop3h 38m

Kansas City

Thu 6/11

3:55 pm-12:06 am

1 stop10h 11m

$257

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Wed 6/17

2:55 pm-11:49 pm

1 stop6h 54m

Kansas City

Tue 6/23

7:26 am-2:54 pm

1 stop9h 28m

$267

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

Mon 6/1

7:45 pm-12:55 pm

2 stops15h 10m

Kansas City

Fri 6/5

6:30 pm-1:40 am

1 stop9h 10m

$268

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

Wed 6/3

12:45 pm-6:45 pm

Nonstop4h 00m

Lambert-St Louis

Sat 6/6

7:41 pm-10:11 pm

Nonstop4h 30m

$317

PortlandSpringfield

PDX - SGF

PDXSGF

Portland

Thu 5/28

9:47 pm-10:57 am

1 stop11h 10m

Springfield-Branson

Sun 5/31

7:30 pm-12:49 am

1 stop7h 19m

$336

PortlandSpringfield

PDX - SGF

PDXSGF

Portland

Tue 6/2

11:43 pm-10:30 am

1 stop8h 47m

Springfield-Branson

Sat 6/6

6:43 pm-12:50 am

1 stop8h 07m

$349

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to Missouri from

How to get the cheapest flight ticket from State of Washington to Missouri

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to Missouri?

In general, January is the cheapest month to fly from State of Washington to Missouri. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $88. If you aren’t able to travel to Missouri during the month of January, then flying in September is also cheap. Prices for this month can be found on momondo for an average of $94.

What is the cheapest day to depart on your flight to Missouri?

The cheapest day to depart from State of Washington to Missouri is on a Tuesday when prices can be found for as low as $372. Flights from State of Washington to Missouri on a Monday will generally be more expensive and average around $547. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

What is the cheapest time of day to depart on your flight to Missouri?

According to our data, the cheapest time of day to fly to Missouri is at noon. momondo users have found flights departing from State of Washington to Missouri at noon for as low as $277. Keep in mind that these prices may fluctuate based on what airline you choose and the time of year you plan to travel. Flights to Missouri are more costly in the afternoon, with an average ticket price of $449. Departure times in the afternoon fall within the peak daily travel times, which is why tickets can be more expensive.

What is the cheapest Washington to Missouri flight route?

Fly from Seattle/Tacoma Intl to Lambert-St Louis for the best Washington - Missouri flight prices

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

You are more likely to see cheaper flights to Missouri from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Missouri for around $383 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Missouri from State of Washington for as low as $249 on momondo.

Can stopping save me money on State of Washington to Missouri flights?

You could potentially save up to 10% on your flight if you consider stops on a State of Washington to Missouri flight.

Cheap State of Washington to Missouri flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from State of Washington to Missouri

Best Price Found

$218

Fastest flight time

3h 23m

Direct flights

Every day

Airports in Missouri

55 airports
The best one-way flight to Missouri from State of Washington in the past 72 hours is $218. The best round-trip flight deal from State of Washington to Missouri found on momondo in the last 72 hours is $393.
The fastest flight from State of Washington to Missouri takes 3h 23m
Direct flights go from State of Washington to Missouri every day.
There are 55 airports in Missouri. From State of Washington there are direct flights to Kansas City (MCI).
Search flight deals

Frequently asked questions about flying from Washington to Missouri

  • When did momondo last update prices for flights from Washington to Missouri?

    Prices for flights from Washington to Missouri are refreshed on a daily basis.

  • How many operators does momondo search for flights from Washington to Missouri?

  • How old do you have to be to fly from Washington to Missouri?

    The minimum age a child must be to fly alone is five but airlines that offer an unaccompanied minor (UNMR) service will have their own age restrictions, including rules around flight length, timings, and stopovers. We always recommend checking with the individual airline you are booking with to travel from Washington to Missouri.

  • What documentation or ID do you need to fly to Missouri?

    The required travel and health documents for your Missouri trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Missouri. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

  • What is the most popular plane model from State of Washington to Missouri?

Best airlines flying from State of Washington to Missouri

Compare and see reviews for airlines that fly from State of Washington to Missouri with momondo
Airline
Rating
Free Cancellation
Price
DeltaPriceFrom $94Free CancellationRating
7.9
8,452 reviews
Search Delta flights
FrontierPriceFrom $133Free CancellationRating
5.6
2,951 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $148Free CancellationRating
7.8
2,837 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $157Free CancellationRating
7.4
9,701 reviews
Search United Airlines flights
SouthwestPriceFrom $178Free CancellationRating
8.0
4,296 reviews
Search Southwest flights
American AirlinesPriceFrom $188Free CancellationRating
7.1
11,664 reviews
Search American Airlines flights
Alaska AirlinesPriceFrom $199Free CancellationRating
7.9
12,354 reviews
Search Alaska Airlines flights

Why use momondo?

Why should I use momondo to find a flight deal from Washington to Missouri?

It is quick and easy to find Washington to Missouri flights on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to Missouri that suits you.

Can I find flights from Washington to Missouri with flexible booking policies on momondo?

Flights from Washington to Missouri with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Washington to Missouri?

Once you have performed a search for Washington to Missouri flights, momondo helps you find the right one by offering useful filters to narrow down your flight selection. Flights can be filtered by multiple factors such as airline, airport and price; but also by other criteria like aircraft type and payment method.

I’m not ready to book a flight from Washington to Missouri right now. Can momondo alert me if prices change?

Price alerts on flights to Missouri from Washington are quick and easy to set up on momondo. Simply perform a search and select the price alert feature. It is as simple as that.

An easier way to manage your Missouri trip

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