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$62+ 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 11/19. Fares are subject to change and may not be available on all flights or dates of travel.
STL — SEA
Nov 29 — Dec 61
Sat 11/29
Sat 12/6
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 October 30, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$123
(Kiwi.com)

One-way from

$62
(Trip.com)

Popular in

July

Cheapest in

October

Average price

$273

Good round-trip deal

$329 or less

Good one-way deal

$218 or less
Provider with most accurate pricing for Lambert-St Louis-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Lambert-St Louis-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. 12% potential increase in price ($51 potential increase over avg. RT price).
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Cheapest flight prices on average. 2% potential price decrease ($8 potential savings vs. average RT price).
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Average for round-trip flights in October 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 October 30, 2025.

This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/67:43 pmSTL - PDX
1 stop18h 13mFrontier
Fri 12/1212:55 pmPDX - STL
1 stop19h 19mFrontier
Deal found 10/29$123
This Kiwi.com deal was found by Cheapflights users on 10/28. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/37:43 pmSTL - PDX
1 stop18h 13mFrontier
Fri 12/512:55 pmPDX - STL
1 stop19h 19mFrontier
Deal found 10/28$124
This Frontier deal was found by Cheapflights users on 10/28. 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.
Thu 12/41:16 pmSTL - PDX
1 stop22h 18mFrontier
Thu 12/1112:51 pmPDX - STL
1 stop19h 23mFrontier
Deal found 10/28$151
This Mytrip deal was found by Cheapflights users on 10/28. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 11/127:45 pmSTL - GEG
1 stop17h 23mFrontier
Sun 11/1612:03 pmGEG - STL
1 stop19h 04mFrontier
Deal found 10/28$171
This Frontier deal was found by Cheapflights users on 10/28. 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.
Sat 11/87:45 pmSTL - PDX
1 stop18h 11mFrontier
Sat 11/1512:52 pmPDX - STL
1 stop18h 15mFrontier
Deal found 10/28$177
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:43 pmSTL - PDX
1 stop18h 00mFrontier
Sun 1/412:47 pmPDX - STL
1 stop19h 15mFrontier
Deal found 10/27$179
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 12/207:43 pmSTL - PDX
1 stop18h 00mFrontier
Thu 1/112:47 pmPDX - STL
1 stop19h 15mFrontier
Deal found 10/27$185
This Kiwi.com deal was found by Cheapflights users on 10/30. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/48:09 pmMCI - PDX
1 stop17h 47mFrontier
Sun 12/77:26 pmPDX - MCI
2 stops22h 24mFrontier
Deal found 10/30$187
This Southwest deal was found by Cheapflights users on 10/29. 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.
Thu 12/183:15 pmSTL - SEA
1 stop11h 20mSouthwest
Mon 12/228:35 pmSEA - STL
1 stop12h 05mSouthwest
Deal found 10/29$188
This Kiwi.com deal was found by Cheapflights users on 10/27. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/227:43 pmSTL - PDX
1 stop18h 00mFrontier
Thu 1/112:47 pmPDX - STL
1 stop19h 15mFrontier
Deal found 10/27$190
This Kiwi.com deal was found by Cheapflights users on 10/29. 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 Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:55 amMCI - PDX
1 stop5h 55mHawaiian Airlines
Wed 12/107:16 amPDX - MCI
Nonstop3h 24mHawaiian Airlines
Deal found 10/29$192
This Booking.com deal was found by Cheapflights users on 10/28. 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 Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/147:45 pmSTL - PDX
1 stop18h 11mFrontier
Mon 11/173:26 pmPDX - STL
1 stop15h 41mFrontier
Deal found 10/28$194

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 October 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

Mon 3/9

5:55 pm-7:48 pm

Nonstop3h 53m

Portland

Tue 3/10

10:55 am-4:20 pm

Nonstop3h 25m

$187

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

Thu 2/19

5:55 pm-7:48 pm

Nonstop3h 53m

Portland

Sun 2/22

10:55 am-4:20 pm

Nonstop3h 25m

$197

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

Tue 2/3

6:25 am-11:45 am

1 stop7h 20m

Portland

Tue 2/10

11:05 am-7:05 pm

1 stop6h 00m

$197

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

Thu 12/18

6:28 am-12:40 pm

1 stop8h 12m

Portland

Thu 1/1

6:15 am-2:49 pm

1 stop6h 34m

$217

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

Wed 11/26

4:57 pm-7:01 pm

Nonstop4h 04m

Portland

Wed 12/3

7:16 am-12:40 pm

Nonstop3h 24m

$217

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

Sat 11/15

8:28 pm-12:23 pm

2 stops17h 55m

Portland

Sun 12/14

12:51 pm-7:50 pm

1 stop28h 59m

$222

St. LouisSeattle

STL - SEA

STLSEA

Lambert-St Louis

Wed 11/26

5:15 pm-12:35 am

1 stop9h 20m

Seattle/Tacoma Intl

Fri 11/28

5:15 am-3:05 pm

1 stop7h 50m

$227

Kansas CityPortland

MCI - PDX

MCIPDX

Kansas City

Tue 11/18

3:20 pm-6:50 pm

1 stop5h 30m

Portland

Sat 11/22

3:20 pm-12:55 am

1 stop7h 35m

$233

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Fri 12/5

2:20 pm-10:49 pm

2 stops10h 29m

Spokane

Sun 12/7

1:10 pm-12:48 am

2 stops9h 38m

$236

St. LouisSpokane

STL - GEG

STLGEG

Lambert-St Louis

Fri 12/5

2:20 pm-10:49 pm

2 stops10h 29m

Spokane

Mon 12/8

7:35 pm-9:10 am

2 stops11h 35m

$236

Flights are sorted by cheapest round-trip flights first.

Deals found on 10/30

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, April is the cheapest month in which you can book a flight from Missouri to State of Washington (average of $118). Flying from Missouri to State of Washington in March is currently the most expensive (average of $188). 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 October 30, 2025.

It’s typically best to fly out from Missouri to State of Washington in the evening. Doing so could potentially save you 25% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Missouri to State of Washington?

Use this chart to determine the cheapest time to fly round-trip from Missouri to Washington. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Missouri to State of Washington flight should consider departing on Saturday mornings when fares are most often at their lowest. Monday afternoons flights should be avoided if possible as fares are typically the most expensive at this time.

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 October 30, 2025.
Peruse reviews from past customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines 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
11,217 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Alaska Airlines
8.0
Very good
11,217 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Delta
7.9
Good
7,998 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
Hawaiian Airlines
7.8
Good
2,797 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
United Airlines
7.4
Good
8,998 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why
American Airlines
7.2
Good
11,035 reviews
Alaska Airlines
8.0
Very good
11,217 reviews

Overall

8.0

Entertainment

7.0

Boarding

8.1

Food

7.1

Crew

8.5

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Anonymous,Aug 2025

MFR - SEA

Great smooth flight. Was hour and half late though. Don't know why

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 53 times in the past calendar month.

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

    Airlines like Hawaiian Airlines, Alaska Airlines, and Southwest fly from Missouri to State of Washington in about 3h 53m. The time it takes to get you to your destination can typically vary by up to 3h 27m. Missouri and State of Washington are separated by a distance of 1477 mi. Both multi-stop and nonstop flights can be found to your destination and back.

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

    For one-way options, check prices for Frontier. According to our data, you can fly for as low as $77. Users have also found prices from $79 and $89 on Southwest and Alaska 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, April is the cheapest month in which you can book a flight from Missouri to State of Washington (average of $118). Flying from Missouri to State of Washington in March is currently the most expensive (average of $188). 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.

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Alternative routes for Missouri to Washington

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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 October 30, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$94Average$375FlexibilityNo cancel feeOn-timeN/A
Spirit AirlinesCheapest$111Average$255FlexibilityNo cancel feeOn-time65%
FrontierCheapest$118Average$233FlexibilityNo cancel feeOn-time62%
Hawaiian AirlinesCheapest$149Average$377FlexibilityNo cancel feeOn-time85%
SouthwestCheapest$176Average$421FlexibilityNo cancel feeOn-time63%
American AirlinesCheapest$188Average$477FlexibilityNo cancel feeOn-time71%
Alaska AirlinesCheapest$203Average$496FlexibilityNo cancel feeOn-time75%
United AirlinesCheapest$216Average$478FlexibilityNo cancel feeOn-time69%

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