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$75+ 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 10/15. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEA
ago. 4 — ago. 111
lun. 8/4
lun. 8/11
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 julio 30, 2025.

Round-trip from

$194
(Netflights)

One-way from

$75
(CheapOair)

Popular in

July

Cheapest in

January

Average price

$432

Good round-trip deal

$317 or less

Good one-way deal

$147 or less
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. 16% potential increase in price ($64 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 July 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 julio 30, 2025.

This Netflights deal was found by Cheapflights users on 7/29. 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 Netflights is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 8/234:55 pmMCI - PDX
Nonstop3h 51mHawaiian Airlines
sáb. 8/3010:30 amPDX - MCI
Nonstop3h 31mHawaiian Airlines
Deal found 7/29$194
This CheapOair deal was found by Cheapflights users on 7/29. 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.
lun. 9/82:55 pmMCI - PDX
1 stop6h 09mMultiple Airlines
jue. 9/116:05 amPDX - MCI
1 stop5h 43mMultiple Airlines
Deal found 7/29$201
This FlightHub deal was found by Cheapflights users on 7/30. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 9/82:55 pmMCI - PDX
1 stop6h 09mSpirit Airlines
jue. 9/118:04 pmPDX - MCI
1 stop15h 56mSpirit Airlines
Deal found 7/30$208
This Alaska Airlines deal was found by Cheapflights users on 7/29. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 9/257:59 pmMCI - PDX
1 stop6h 16mAlaska Airlines
mar. 9/301:24 pmPDX - MCI
1 stop5h 48mAlaska Airlines
Deal found 7/29$226
This Hawaiian Airlines deal was found by Cheapflights users on 7/28. 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.
mar. 9/233:35 pmSTL - PDX
1 stop9h 12mHawaiian Airlines
mar. 9/306:05 amPDX - STL
1 stop6h 34mHawaiian Airlines
Deal found 7/28$228
This Frontier deal was found by Cheapflights users on 7/28. 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 Frontier is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 8/137:20 pmMCI - PDX
1 stop6h 04mFrontier
jue. 8/216:27 amPDX - MCI
1 stop5h 06mFrontier
Deal found 7/28$228
This American Airlines deal was found by Cheapflights users on 7/29. 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.
jue. 9/46:20 amSTL - PDX
1 stop10h 03mAmerican Airlines
lun. 9/89:56 pmPDX - STL
1 stop9h 20mAmerican Airlines
Deal found 7/29$229
This FlightHub deal was found by Cheapflights users on 7/29. 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 FlightHub is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 9/137:55 pmSTL - GEG
1 stop17h 03mFrontier
dom. 9/2111:53 amGEG - STL
1 stop19h 13mFrontier
Deal found 7/29$235
This Alaska Airlines deal was found by Cheapflights users on 7/30. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
dom. 9/76:30 pmSTL - SEA
Nonstop4h 29mAlaska Airlines
vie. 9/1211:31 amSEA - STL
Nonstop4h 03mAlaska Airlines
Deal found 7/30$237
This Delta deal was found by Cheapflights users on 7/30. 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.
lun. 9/82:25 pmSTL - SEA
1 stop6h 35mDelta
mar. 9/167:10 amSEA - STL
1 stop8h 52mDelta
Deal found 7/30$238
This Hawaiian Airlines deal was found by Cheapflights users on 7/30. 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.
lun. 11/32:57 pmMCI - SEA
Nonstop4h 03mHawaiian Airlines
lun. 11/36:16 pmSEA - MCI
Nonstop3h 30mHawaiian Airlines
Deal found 7/30$241
This Southwest deal was found by Cheapflights users on 7/29. 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.
mar. 9/93:05 pmMCI - SEA
2 stops9h 45mSouthwest
mié. 9/1711:10 amSEA - MCI
1 stop6h 40mSouthwest
Deal found 7/29$242

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 julio 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

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

sáb. 8/23

4:55 pm-6:46 pm

Nonstop3h 51m

Portland

sáb. 8/30

10:30 am-4:01 pm

Nonstop3h 31m

$194

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

mar. 9/2

4:55 pm-6:46 pm

Nonstop3h 51m

Portland

sáb. 9/6

10:30 am-4:01 pm

Nonstop3h 31m

$197

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

lun. 9/8

2:55 pm-7:04 pm

1 stop6h 09m

Portland

jue. 9/11

6:05 am-1:48 pm

1 stop5h 43m

$201

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

lun. 9/8

2:55 pm-7:04 pm

1 stop6h 09m

Portland

jue. 9/11

8:04 pm-2:00 pm

1 stop15h 56m

$208

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

mié. 8/13

7:20 pm-11:24 pm

1 stop6h 04m

Portland

jue. 8/21

6:27 am-1:33 pm

1 stop5h 06m

$228

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

mar. 9/23

3:35 pm-10:47 pm

1 stop9h 12m

Portland

mar. 9/30

6:05 am-2:39 pm

1 stop6h 34m

$228

St. LouisPortland

STL - PDX

STLPDX

Lambert-St Louis

jue. 9/4

6:20 am-2:23 pm

1 stop10h 03m

Portland

lun. 9/8

9:56 pm-9:16 am

1 stop9h 20m

$229

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

sáb. 9/13

7:55 pm-10:58 am

1 stop17h 03m

Spokane

dom. 9/21

11:53 am-9:06 am

1 stop19h 13m

$235

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

dom. 9/7

6:30 pm-8:59 pm

Nonstop4h 29m

Seattle/Tacoma Intl

jue. 9/11

8:36 am-2:39 pm

Nonstop4h 03m

$237

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

lun. 9/8

2:25 pm-7:00 pm

1 stop6h 35m

Seattle/Tacoma Intl

sáb. 9/13

5:30 am-1:44 pm

1 stop6h 14m

$238

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/28

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 June is currently the most expensive (average of $389). 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 julio 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 julio 30, 2025.

The most flights from USMO to USWA are scheduled on a Wednesday (15 on average). You will have fewer flight options on Friday, which is when the least amount of flights are scheduled (5 on average).

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 julio 30, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Southwest, and Delta from Missouri to Washington to help guide your decision. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Southwest
8.0
Very good
4,241 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,611 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,896 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Food

7.1

Comfort

7.8

Boarding

8.1

Overall

8.0

Entertainment

7.1

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

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 42 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 $75. Users have also found prices from $84 and $87 on United Airlines and American Airlines, 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 June is currently the most expensive (average of $389). 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 julio 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$94Average$368FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$100Average$189FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$119Average$248FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$149Average$390FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$179Average$432FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$193Average$506FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$213Average$508FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$216Average$504FlexibilityNo cancel feeOn-time69%

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