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$65+ 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 8/13. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEA
Jun 17 — Jun 241
Tue 6/17
Tue 6/24
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 June 12, 2025.

Round-trip from

$194
(Southwest)

One-way from

$65
(Alaska Airlines)

Popular in

June

Cheapest in

January

Average price

$418

Good round-trip deal

$325 or less

Good one-way deal

$184 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. 20% potential increase in price ($82 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 June 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 June 12, 2025.

This Southwest deal was found by Cheapflights users on 6/9. 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.
Thu 8/74:20 pmSTL - SEA
1 stop9h 45mSouthwest
Tue 8/1210:45 pmSEA - STL
1 stop10h 05mSouthwest
Deal found 6/9$194
This Hawaiian Airlines deal was found by Cheapflights users on 6/10. 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.
Tue 8/264:55 pmMCI - GEG
1 stop8h 16mHawaiian Airlines
Thu 8/281:40 pmGEG - MCI
1 stop8h 19mHawaiian Airlines
Deal found 6/10$198
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Sat 9/67:12 amMCI - GEG
1 stop7h 32mAmerican Airlines
Wed 9/1712:35 pmGEG - MCI
1 stop8h 32mAmerican Airlines
Deal found 6/12$199
This Delta deal was found by Cheapflights users on 6/11. 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.
Thu 9/186:59 pmSTL - SEA
1 stop7h 10mDelta
Sat 9/275:45 pmSEA - STL
1 stop5h 37mDelta
Deal found 6/11$209
This American Airlines deal was found by Cheapflights users on 6/12. 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.
Thu 8/214:32 pmSTL - SEA
1 stop8h 23mAmerican Airlines
Mon 8/2512:45 amSEA - STL
1 stop10h 09mAmerican Airlines
Deal found 6/12$212
This United Airlines deal was found by Cheapflights users on 6/10. 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.
Fri 9/124:40 pmSTL - SEA
1 stop8h 19mUnited Airlines
Sat 9/207:00 amSEA - STL
1 stop6h 44mUnited Airlines
Deal found 6/10$218
This CheapOair deal was found by Cheapflights users on 6/10. 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.
Thu 10/237:51 pmMCI - SEA
1 stop6h 40mFrontier
Mon 10/276:00 amSEA - MCI
1 stop11h 02mFrontier
Deal found 6/10$228
This United Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 9/139:05 amMCI - SEA
1 stop8h 48mUnited Airlines
Sat 9/207:00 amSEA - MCI
1 stop6h 56mUnited Airlines
Deal found 6/11$237
This Alaska Airlines deal was found by Cheapflights users on 6/10. 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.
Thu 8/217:59 pmMCI - GEG
1 stop6h 00mAlaska Airlines
Sun 8/248:45 pmGEG - MCI
1 stop15h 57mAlaska Airlines
Deal found 6/10$239
This CheapOair deal was found by Cheapflights users on 6/10. 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 9/127:52 pmSTL - SEA
1 stop6h 39mFrontier
Mon 9/158:34 pmSEA - STL
1 stop10h 33mFrontier
Deal found 6/10$239
This American Airlines deal was found by Cheapflights users on 6/11. 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.
Sat 8/305:50 amMCI - SEA
1 stop6h 35mAmerican Airlines
Wed 9/106:05 amSEA - MCI
1 stop12h 42mAmerican Airlines
Deal found 6/11$242
This United Airlines deal was found by Cheapflights users on 6/10. 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 7/81:44 pmMCI - GEG
2 stops11h 24mUnited Airlines
Tue 7/155:30 amGEG - MCI
1 stop5h 05mUnited Airlines
Deal found 6/10$244

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 June 12, 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

Thu 8/7

4:20 pm-12:05 am

1 stop9h 45m

Seattle/Tacoma Intl

Tue 8/12

10:45 pm-10:50 am

1 stop10h 05m

$194

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Tue 8/26

4:55 pm-11:11 pm

1 stop8h 16m

Spokane

Thu 8/28

1:40 pm-11:59 pm

1 stop8h 19m

$198

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Sat 9/6

7:12 am-12:44 pm

1 stop7h 32m

Spokane

Wed 9/17

12:35 pm-11:07 pm

1 stop8h 32m

$199

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Thu 8/21

4:32 pm-10:55 pm

1 stop8h 23m

Seattle/Tacoma Intl

Mon 8/25

12:45 am-12:54 pm

1 stop10h 09m

$212

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Sat 8/16

7:35 am-12:33 pm

1 stop6h 58m

Seattle/Tacoma Intl

Tue 8/19

5:30 am-1:29 pm

1 stop5h 59m

$213

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Thu 8/21

7:59 pm-11:59 pm

1 stop6h 00m

Spokane

Sun 8/24

8:45 pm-2:42 pm

1 stop15h 57m

$239

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Sat 9/6

6:00 am-1:30 pm

2 stops9h 30m

Seattle/Tacoma Intl

Wed 9/10

5:07 am-12:40 pm

1 stop5h 33m

$242

Kansas CitySpokane

MCI - GEG

MCIGEG

Kansas City

Tue 7/8

1:44 pm-11:08 pm

2 stops11h 24m

Spokane

Tue 7/15

5:30 am-12:35 pm

1 stop5h 05m

$244

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Wed 7/9

5:00 am-9:50 am

1 stop6h 50m

Seattle/Tacoma Intl

Wed 7/16

7:00 am-4:45 pm

1 stop7h 45m

$247

Kansas CitySeattle

MCI - SEA

MCISEA

Kansas City

Fri 8/15

8:01 pm-6:46 pm

1 stop24h 45m

Seattle/Tacoma Intl

Mon 8/18

6:25 am-7:04 pm

1 stop10h 39m

$249

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/9

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 $391). 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 June 12, 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 June 12, 2025.

The most flights from USMO to USWA are scheduled on a Thursday (15 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 June 12, 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
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
4,287 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
7,950 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
2,494 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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
8,790 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Entertainment

7.1

Crew

8.5

Overall

8.0

Comfort

7.8

Boarding

8.1

Food

7.1

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 40 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 Alaska Airlines. According to our data, you can fly for as low as $65. Users have also found prices from $100 and $114 on American Airlines 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 $391). 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 June 12, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$94Average$367FlexibilityNo cancel feeOn-timeN/A
FrontierCheapest$110Average$186FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$136Average$233FlexibilityNo cancel feeOn-time65%
Hawaiian AirlinesCheapest$149Average$401FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$188Average$445FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$196Average$505FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$216Average$508FlexibilityNo cancel feeOn-time69%
Alaska AirlinesCheapest$216Average$476FlexibilityNo cancel feeOn-time75%

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