What airlines fly to Missouri?

Alaska Airlines, Delta and American Airlines are the top three most popular airlines that fly to Missouri from State of Washington according to our data. Alaska Airlines is the first choice among our users, with 56% of people opting to fly with this airline when traveling to Missouri. Keep in mind that there are 8 different airlines that fly to Missouri on a routine basis, so you have a few additional options to choose from.

What is the cheapest airline that flies from Washington to Missouri?

American Airlines, Frontier, and Delta are the most popular carriers operating from Washington to Missouri

How many flights depart from State of Washington to Missouri on average per week?

The number of flights available between State of Washington and Missouri is 52 per week as of February 2026. The most frequent departure day is Tue, with 25% of weekly flights leaving on this day.

How long is the flight from State of Washington to Missouri?

The flight from State of Washington to Missouri depends on which airports you’re departing and arriving from and whether or not you have a layover. If you fly from Seattle (a popular airport in State of Washington) to St. Louis (the most popular airport in Missouri), then the flight time is 3h 50m on average. If you fly from Spokane (another popular airport in State of Washington) to St. Louis, then the average flight time is 4h 55m.

How many flights depart from State of Washington to Missouri on average per day?

7 flights are operational daily from State of Washington to Missouri as of February 2026. The most popular departure time for this route is 5:00PM, with 68% of flights per day taking off in the afternoon.

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?

The number of operators available for flights from Washington to Missouri is 8 as of February 2026.

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.

$60 Cheap Flights from Washington to Missouri in 2026

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Find the cheapest flights from Washington to Missouri

Round-trip

One-way

Last minute

Direct

Cheap round-trip flights

Enter your travel dates to find the best prices.

12:59 am - 11:01 am

SEA

STL

8h 02m

1 stop

6:37 pm - 12:24 am

STL

SEA

7h 47m

1 stop

$159American Airlines

seg, mar 2 - ter, mar 10

11:55 pm - 8:54 am

SEA

STL

6h 59m

1 stop

5:21 pm - 10:38 pm

STL

SEA

7h 17m

1 stop

$167American Airlines

seg, abr 20 - sáb, abr 25

12:07 am - 8:41 am

SEA

STL

6h 34m

1 stop

6:36 pm - 12:24 am

STL

SEA

7h 48m

1 stop

$168American Airlines

qui, fev 26 - sáb, fev 28

10:53 am - 4:22 pm

PDX

MCI

3h 29mnonstop

5:16 pm - 7:20 pm

MCI

PDX

4h 04mnonstop

$177Alaska Airlines

ter, mar 10 - ter, mar 17

3:30 pm - 11:25 pm

SEA

STL

5h 55m

1 stop

6:12 pm - 12:03 am

STL

SEA

7h 51m

1 stop

$177Delta

qui, mar 26 - qui, abr 9

10:53 am - 4:22 pm

PDX

MCI

3h 29mnonstop

5:16 pm - 7:20 pm

MCI

PDX

4h 04mnonstop

$187Alaska Airlines

seg, mar 9 - ter, mar 17

6:05 am - 3:04 pm

PDX

MCI

6h 59m

1 stop

8:11 pm - 11:54 pm

MCI

PDX

5h 43m

1 stop

$197Delta

ter, mar 10 - ter, mar 17

5:00 am - 12:52 pm

SEA

MCI

5h 52m

1 stop

5:00 pm - 10:37 pm

MCI

SEA

7h 37m

1 stop

$212United Airlines

ter, abr 7 - ter, abr 7

8:40 am - 4:15 pm

PDX

MCI

5h 35m

1 stop

6:00 am - 9:38 am

MCI

PDX

5h 38m

1 stop

$217United Airlines

sáb, mai 9 - qua, mai 13

1:45 pm - 11:00 pm

GEG

STL

7h 15m

1 stop

5:45 am - 12:50 pm

STL

GEG

9h 05m

2 stops

$312Southwest

sáb, abr 11 - qui, abr 16

Alaska Airlines flights from State of Washington to Missouri

Our best Alaska Airlines deals on State of Washington to Missouri flight tickets

Alaska Airlines

Mar 10

PDX10:53 amPortland

3h 29m

MCI4:22 pmKansas City

Mar 18

MCI5:50 pmKansas City

3h 51m

PDX7:41 pmPortland

$177

Alaska Airlines

Mar 9

PDX10:53 amPortland

3h 29m

MCI4:22 pmKansas City

Mar 17

MCI5:16 pmKansas City

4h 04m

PDX7:20 pmPortland

$187

Alaska Airlines

Mar 3

SEA7:55 amSeattle/Tacoma Intl

3h 56m

STL1:51 pmLambert-St Louis

Mar 4

STL7:00 amLambert-St Louis

4h 42m

SEA9:42 amSeattle/Tacoma Intl

$197

American Airlines flights from State of Washington to Missouri

Our best American Airlines deals on State of Washington to Missouri flight tickets

American Airlines

Mar 2

SEA12:59 amSeattle/Tacoma Intl

8h 02m

1 stop

STL11:01 amLambert-St Louis

Mar 10

STL6:37 pmLambert-St Louis

7h 47m

1 stop

SEA12:24 amSeattle/Tacoma Intl

$159

American Airlines

Apr 20

SEA11:55 pmSeattle/Tacoma Intl

6h 59m

1 stop

STL8:54 amLambert-St Louis

Apr 25

STL5:21 pmLambert-St Louis

7h 17m

1 stop

SEA10:38 pmSeattle/Tacoma Intl

$167

American Airlines

Feb 26

SEA12:07 amSeattle/Tacoma Intl

6h 34m

1 stop

STL8:41 amLambert-St Louis

Feb 28

STL6:36 pmLambert-St Louis

7h 48m

1 stop

SEA12:24 amSeattle/Tacoma Intl

$168

Fly from

Fly to

Route

Depart

Return

Price

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

seg 3/2

12:59 am-11:01 am

1 stop8h 02m

Lambert-St Louis

ter 3/10

6:37 pm-12:24 am

1 stop7h 47m

$159

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

seg 4/20

11:55 pm-8:54 am

1 stop6h 59m

Lambert-St Louis

sáb 4/25

5:21 pm-10:38 pm

1 stop7h 17m

$167

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

qui 2/26

12:07 am-8:41 am

1 stop6h 34m

Lambert-St Louis

sáb 2/28

6:36 pm-12:24 am

1 stop7h 48m

$168

PortlandKansas City

PDX - MCI

PDXMCI

Portland

ter 3/10

10:53 am-4:22 pm

Nonstop3h 29m

Kansas City

ter 3/17

5:16 pm-7:20 pm

Nonstop4h 04m

$177

SeattleSt. Louis

SEA - STL

SEASTL

Seattle/Tacoma Intl

qui 3/26

3:30 pm-11:25 pm

1 stop5h 55m

Lambert-St Louis

qui 4/9

6:12 pm-12:03 am

1 stop7h 51m

$177

PortlandKansas City

PDX - MCI

PDXMCI

Portland

seg 3/9

10:53 am-4:22 pm

Nonstop3h 29m

Kansas City

ter 3/17

5:16 pm-7:20 pm

Nonstop4h 04m

$187

PortlandKansas City

PDX - MCI

PDXMCI

Portland

ter 3/10

6:05 am-3:04 pm

1 stop6h 59m

Kansas City

ter 3/17

8:11 pm-11:54 pm

1 stop5h 43m

$197

SeattleKansas City

SEA - MCI

SEAMCI

Seattle/Tacoma Intl

ter 4/7

5:00 am-12:52 pm

1 stop5h 52m

Kansas City

ter 4/7

5:00 pm-10:37 pm

1 stop7h 37m

$212

PortlandKansas City

PDX - MCI

PDXMCI

Portland

sáb 5/9

8:40 am-4:15 pm

1 stop5h 35m

Kansas City

qua 5/13

6:00 am-9:38 am

1 stop5h 38m

$217

SpokaneSt. Louis

GEG - STL

GEGSTL

Spokane

sáb 4/11

1:45 pm-11:00 pm

1 stop7h 15m

Lambert-St Louis

qui 4/16

5:45 am-12:50 pm

2 stops9h 05m

$312

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

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

Prices

Airlines

Other information

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 $268. If you aren’t able to travel to Missouri during the month of January, then flying in October is also cheap. Prices for this month can be found on momondo for an average of $327.

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 Thursday when prices can be found for as low as $379. Flights from State of Washington to Missouri on a Sunday will generally be more expensive and average around $485. 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 $269. 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 morning, with an average ticket price of $417. Departure times in the morning 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 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 $375 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 $262 on momondo.

What cabin class options are available on Washington to Missouri flights?

There are 4 cabin classes available to choose from on Washington to Missouri flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 36% 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	$174
Fastest flight time	3h 26m
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 $174. The best round-trip flight deal from State of Washington to Missouri found on momondo in the last 72 hours is $199.

The fastest flight from State of Washington to Missouri takes 3h 26m

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

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?
The number of operators available for flights from Washington to Missouri is 8 as of February 2026.
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?
momondo data reveals that the most frequently booked plane model on the route from State of Washington to Missouri is Boeing 737, representing 46.00% of all bookings. The subsequent popular models are Boeing 737-900 Passenger/BBJ3 (winglets) at 24.43%, Boeing 737-800 Passenger/BBJ2 (winglets) at 11.46%, and Boeing 737 MAX 9 at 9.20%.

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
Delta	PriceFrom $94	Free Cancellation	Rating 7.9 8,132 reviews	Search Delta flights
Frontier	PriceFrom $121	Free Cancellation	Rating 5.7 3,051 reviews	Search Frontier flights
Hawaiian Airlines	PriceFrom $148	Free Cancellation	Rating 7.8 2,830 reviews	Search Hawaiian Airlines flights
United Airlines	PriceFrom $157	Free Cancellation	Rating 7.4 9,231 reviews	Search United Airlines flights
Spirit Airlines	PriceFrom $168	Free Cancellation	Rating 6.3 8,396 reviews	Search Spirit Airlines flights
Southwest	PriceFrom $182	Free Cancellation	Rating 8.0 4,271 reviews	Search Southwest flights
American Airlines	PriceFrom $188	Free Cancellation	Rating 7.2 11,212 reviews	Search American Airlines flights
Alaska Airlines	PriceFrom $212	Free Cancellation	Rating 8.0 11,830 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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

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Find better results for your trip to Missouri

Popular cities in Missouri

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Flights to Seattlefrom $73

Cheap flights from Washington to Missouri from $60

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 3/6. 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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Find the cheapest flights from Washington to Missouri

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Alaska Airlines flights from State of Washington to Missouri

Our best Alaska Airlines deals on State of Washington to Missouri flight tickets

American Airlines flights from State of Washington to Missouri

Our best American Airlines deals on State of Washington to Missouri flight tickets

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See travel insights to Missouri from

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

What is the cheapest month to fly to Missouri?

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

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

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 to Missouri?

What cabin class options are available on Washington to Missouri flights?

There are 4 cabin classes available to choose from on Washington to Missouri flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

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

You could potentially save up to 36% on your flight if you consider stops on a State of Washington to Missouri flight.

What is the cheapest airline that flies from Washington to Missouri?

American Airlines, Frontier, and Delta are the most popular carriers operating from Washington to Missouri

What airlines fly to Missouri?

How many flights depart from State of Washington to Missouri on average per day?

7 flights are operational daily from State of Washington to Missouri as of February 2026. The most popular departure time for this route is 5:00PM, with 68% of flights per day taking off in the afternoon.

How many flights depart from State of Washington to Missouri on average per week?

The number of flights available between State of Washington and Missouri is 52 per week as of February 2026. The most frequent departure day is Tue, with 25% of weekly flights leaving on this day.

How long is the flight from State of Washington to Missouri?

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

Fastest flight time

Direct flights

Airports in Missouri

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

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?

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

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

Why use momondo?

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

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

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

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

An easier way to manage your Missouri trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

Find better results for your trip to Missouri

Popular cities in Missouri

Popular flights according to clicks in the last 7 days on momondo