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$69+ Cheap flights from Missouri to Washington

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 6/3. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEA
May 5 — May 121
Mon 5/5
Mon 5/12
1 adult, Economy
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Cheap flight deals from Missouri to Washington

Keep the following information in mind while searching for Missouri to Washington flight deals. Data was last updated April 30, 2025.

Most accurate provider

Mytrip
3 stars

Most trusted provider

Mytrip
3 stars

Round-trip from

$175
(Cheapflightsfares)

One-way from

$69
(FlightHub)

Popular in

July

Cheapest in

January

Average price

$267

Good round-trip deal

$377 or less

Good one-way deal

$214 or less
Provider with most accurate pricing for Kansas City-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Kansas City-Seattle/Tacoma Intl flights.
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From Missouri to Washington
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One-way flight from Missouri to Washington
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Highest demand for flights based on searches. 18% potential increase in price ($75 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Price to beat on a round-trip flight from Missouri to Washington.
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Price to beat on a one-way flight from Missouri to Washington.
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Find flight deals from Missouri to Washington

Cheapest flights from Missouri to Washington
Explore the most affordable flight options available from Missouri to Washington. Find the lowest fares from popular airlines and budget airlines, with prices last updated on April 30, 2025.

This Cheapflightsfares deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Cheapflightsfares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 5/216:45 pmMCI - SEA
1 stop7h 25mSpirit Airlines
Wed 5/286:00 amSEA - MCI
1 stop9h 45mSpirit Airlines
Deal found 4/29$175
This Delta deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/77:15 pmSTL - SEA
1 stop6h 44mDelta
Thu 7/176:00 amSEA - STL
1 stop8h 42mDelta
Deal found 4/28$189
This Southwest deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 7/146:15 pmSTL - SEA
1 stop8h 35mSouthwest
Wed 7/1610:40 pmSEA - STL
2 stops10h 55mSouthwest
Deal found 4/28$194
This Frontier deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/108:15 pmSTL - SEA
1 stop6h 29mFrontier
Fri 5/307:10 pmSEA - STL
1 stop12h 59mFrontier
Deal found 4/29$198
This American Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 6/104:41 pmSTL - SEA
1 stop8h 14mAmerican Airlines
Mon 6/1612:05 amSEA - STL
1 stop6h 00mAmerican Airlines
Deal found 4/29$213
This Expedia deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/167:58 pmMCI - SEA
1 stop6h 12mMultiple Airlines
Tue 5/206:05 pmSEA - MCI
Nonstop3h 33mMultiple Airlines
Deal found 4/29$217
This CheapOair deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/307:51 pmMCI - SEA
1 stop6h 46mFrontier
Sat 6/76:25 amSEA - MCI
1 stop27h 10mFrontier
Deal found 4/29$218
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 7/85:15 amSTL - PDX
1 stop6h 17mUnited Airlines
Sat 7/1911:59 pmPDX - STL
1 stop7h 32mUnited Airlines
Deal found 4/29$227
This Booking.com deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 5/49:55 pmSTL - PDX
1 stop19h 47mFrontier
Tue 5/66:20 amPDX - STL
1 stop25h 39mFrontier
Deal found 4/29$228
This Southwest deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 9/21:20 pmSTL - PDX
1 stop9h 55mSouthwest
Tue 9/96:40 amPDX - STL
1 stop8h 15mSouthwest
Deal found 4/29$232
This United Airlines deal was found by Cheapflights users on 4/29. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/275:20 pmMCI - SEA
1 stop7h 10mUnited Airlines
Tue 6/312:35 pmSEA - MCI
2 stops8h 54mUnited Airlines
Deal found 4/29$242
This Hawaiian Airlines deal was found by Cheapflights users on 4/28. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Hawaiian Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:00 amSTL - SEA
Nonstop4h 30mHawaiian Airlines
Tue 9/98:38 amSEA - STL
Nonstop4h 01mHawaiian Airlines
Deal found 4/28$249

Cheapflights Fare Finder

Customize your flight search to find flights from Missouri to Washington 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, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2025.
Use the filters below to find and compare flights from Missouri to Washington that are best for you.

Fly from

Missouri

Fly to

Washington

Route

Depart

Return

Price

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Mon 7/7

7:15 pm-11:59 pm

1 stop6h 44m

Seattle/Tacoma Intl

Thu 7/17

6:00 am-4:42 pm

1 stop8h 42m

$189

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Mon 7/14

6:15 pm-12:50 am

1 stop8h 35m

Seattle/Tacoma Intl

Wed 7/16

10:40 pm-11:35 am

2 stops10h 55m

$194

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Sat 5/10

8:15 pm-12:44 am

1 stop6h 29m

Seattle/Tacoma Intl

Fri 5/30

7:10 pm-10:09 am

1 stop12h 59m

$198

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 5/30

7:51 pm-12:37 am

1 stop6h 46m

Seattle/Tacoma Intl

Wed 6/4

6:25 am-7:11 pm

1 stop10h 46m

$208

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Tue 6/10

4:41 pm-10:55 pm

1 stop8h 14m

Seattle/Tacoma Intl

Mon 6/16

12:05 am-8:05 am

1 stop6h 00m

$213

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 5/30

7:51 pm-12:37 am

1 stop6h 46m

Seattle/Tacoma Intl

Tue 6/3

6:00 am-5:45 pm

1 stop9h 45m

$221

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Tue 7/8

5:15 am-9:32 am

1 stop6h 17m

Portland

Sat 7/19

11:59 pm-9:31 am

1 stop7h 32m

$227

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

Sun 5/4

9:55 pm-3:42 pm

1 stop19h 47m

Portland

Tue 5/6

6:20 am-9:59 am

1 stop25h 39m

$228

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 5/27

6:45 pm-2:25 pm

1 stop21h 40m

Seattle/Tacoma Intl

Tue 6/3

6:00 am-5:45 pm

1 stop9h 45m

$229

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Tue 5/27

5:20 pm-10:30 pm

1 stop7h 10m

Seattle/Tacoma Intl

Tue 6/3

12:35 pm-11:29 pm

2 stops8h 54m

$242

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/29

Showing 1-10 of 60 results
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Best time to book a flight from Missouri to Washington

Have a flexible travel schedule? Discover the best time to fly to Washington from Missouri with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Missouri to Washington

What is the cheapest month to book a flight from Missouri to State of Washington?

Currently, January is the cheapest month in which you can book a flight from Missouri to State of Washington (average of $238). Flying from Missouri to State of Washington in July is currently the most expensive (average of $405). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from MO to WA?

Find hourly flight availability from Missouri to Washington. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated April 30, 2025.

When flying from Missouri to State of Washington, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Missouri to State of Washington

Explore weekly flight availability from Missouri to Washington. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated April 30, 2025.

The most flights from USMO to USWA are scheduled on a Wednesday (11 on average). You will have fewer flight options on Saturday, which is when the least amount of flights are scheduled (6 on average).

Rainfall in Washington by month

Plan your trip to Washington by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in State of Washington ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit State of Washington when rainfall is around 0.7 in.

Temperature in Washington by month

Plan your trip to Washington by taking into account the average temperature totals by month.

If weather is an important factor for your trip to State of Washington, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

Reviews of airlines servicing Washington

Get insights into the airlines that provide service to Washington. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Washington. Reviews last updated April 30, 2025.
Read reviews from past customers who have flown Alaska Airlines, Southwest and Delta from Missouri to Washington. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
9,961 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Alaska Airlines
8.0
Very good
9,961 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Southwest
8.0
Very good
4,295 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Delta
8.0
Very good
7,936 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
Hawaiian Airlines
7.9
Good
2,402 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.
United Airlines
7.4
Good
8,696 reviews
Alaska Airlines
8.0
Very good
9,961 reviews

Entertainment

7.1

Boarding

8.2

Comfort

7.9

Food

7.1

Crew

8.5

Overall

8.0

Reviews

1 / 20
10.0
Excellent

James,Apr 2025

LAX - SFO

Good flight except the uncontrollable cold air from the ceiling.

Related info for your journey

Find useful and relevant information for your journey from Missouri to Washington. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How popular is this Missouri to State of Washington flight route?

    Flights from Missouri to Washington have been viewed 41 times in the past calendar month.

  • What are the cheapest airlines to fly from Missouri to State of Washington one-way?

    For one-way options, check prices for Spirit Airlines. According to our data, you can fly for as low as $69. Users have also found prices from $95 and $98 on Delta and Frontier, respectively.

  • Can I find deals for flights from Missouri to Washington that include hotel bookings?

    Yes. In addition to deals on Missouri to Washington flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Missouri to Washington?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Missouri to Washington.

  • Can I find deals for business class flights from Missouri to Washington?

    Yes. Cheapflights offers flight deals from Missouri to Washington by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Missouri to State of Washington?

    Currently, January is the cheapest month in which you can book a flight from Missouri to State of Washington (average of $238). Flying from Missouri to State of Washington in July is currently the most expensive (average of $405). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

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Alternative routes for Missouri to Washington

See prices for flight routes from nearby airports that may be better suited for you.
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Top 8 airlines flying from Missouri to Washington

Discover the top 8 airlines that operate flights from Missouri to Washington. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated April 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$111Average$189FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$133Average$236FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$138Average$386FlexibilityNo cancel feeOn-time85%
DeltaCheapest$145Average$391FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$188Average$453FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$199Average$488FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$550FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$216Average$526FlexibilityNo cancel feeOn-time75%

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