What is the cheapest airline to fly from Kansas City to Seattle round-trip?

Currently priced at $357, Alaska Airlines will fly you from Kansas City to Seattle and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip.

In terms of precipitation, rainfall in Seattle 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 Seattle when rainfall is around 0.7 in.

If weather is an important factor for your trip to Seattle, 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).

What is the cheapest time of day to fly from MKC to SEA?

Regardless of the time of day you decide to fly, the ticket price will remain around the same. Book flights from Kansas City to Seattle as you normally would.

Most accurate provider : When it comes to deals on Kansas City-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kansas City-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kansas City-Seattle flight searches over the past month and is updated monthly.

Most trusted provider : When it comes to deals on Kansas City-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kansas City-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Can I find deals for flights from Kansas City to Seattle that include hotel bookings?

Yes. In addition to deals on Kansas City to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.

How can I find direct flights from Kansas City to Seattle?

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

Can I find deals for business class flights from Kansas City to Seattle?

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

Find Flights from Kansas City to Seattle

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1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Find flight deals from Kansas City to Seattle

Most accurate provider	FlightHub 3 stars
Most trusted provider	FlightHub 3 stars
Popular in	July
Cheapest in	April
Average price	$273
Good round-trip deal	$317 or less
Good one-way deal	$154 or less

Provider with most accurate pricing for Kansas City Downtown-Seattle/Tacoma Intl flight deals.

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Provider most trusted by Cheapflights users for Kansas City Downtown-Seattle/Tacoma Intl flights.

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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. 3% potential price decrease ($10 potential savings vs. average RT price).

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Average for round-trip flights in February 2026

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Price to beat on a round-trip flight from Kansas City Downtown to Seattle/Tacoma Intl.

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Price to beat on a one-way flight from Kansas City Downtown to Seattle/Tacoma Intl.

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Compare providers for flights from Kansas City to Seattle

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kansas City to Seattle in February.

Provider	Price Accuracy	Trust Score*
Expedia	Price Accuracy1 star	Trust Score*3 stars
FlightHub	Price Accuracy3 stars	Trust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

Most accurate provider: When it comes to deals on Kansas City-Seattle flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Kansas City-Seattle flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Kansas City-Seattle flight searches over the past month and is updated monthly.
Most trusted provider: When it comes to deals on Kansas City-Seattle flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Kansas City-Seattle flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Kansas City to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Kansas City with our price prediction graph.

MKC-SEA

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 Kansas City to Seattle

What is the cheapest month to book a flight from Kansas City to Seattle?

Currently, December is the cheapest month in which you can book a flight from Kansas City to Seattle (average of $119). Flying from Kansas City to Seattle in July is currently the most expensive (average of $247). 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.

Reviews of airlines servicing Seattle

See what other customers who have flown with Alaska Airlines from Kansas City to Seattle have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Alaska Airlines

8.0

Very good

11,839 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Alaska Airlines

8.0

Very good

11,839 reviews

Alaska Airlines

8.0

Very good

11,839 reviews

Reviews

1 / 20

10.0

Excellent

Anonymous,Dec 2025

SJC - SEA

The flight was great. Don’t have to make it better. Everything was OK.

Related info for your journey

What is the cheapest airline to fly from Kansas City to Seattle round-trip?
Currently priced at $357, Alaska Airlines will fly you from Kansas City to Seattle and back. In addition to Alaska Airlines, many other airlines offer competitively priced options for your trip.
Can I find deals for flights from Kansas City to Seattle that include hotel bookings?
Yes. In addition to deals on Kansas City to Seattle flights, Cheapflights offers vacation packages that include both flights and hotel.
How can I find direct flights from Kansas City to Seattle?
After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Kansas City to Seattle.
Can I find deals for business class flights from Kansas City to Seattle?
Yes. Cheapflights offers flight deals from Kansas City to Seattle 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 Kansas City to Seattle?
Currently, December is the cheapest month in which you can book a flight from Kansas City to Seattle (average of $119). Flying from Kansas City to Seattle in July is currently the most expensive (average of $247). 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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Top airline flying from Kansas City to Seattle

Airline	Cheapest	Average	Flexibility	On-time
Alaska Airlines	Cheapest$357	Average$447	FlexibilityNo cancel fee	On-time75%

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Cheap flights from Kansas City to Seattle (MKC - SEA)

Find cheap flights from Kansas City to Seattle with Cheapflights

1. Tell us where you want to go

2. Select your favorite providers

3. Compare prices and book

Find flight deals from Kansas City to Seattle

Most accurate provider

Most trusted provider

Popular in

Cheapest in

Average price

Good round-trip deal

Good one-way deal

Compare providers for flights from Kansas City to Seattle

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.

Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Kansas City to Seattle in February.

Best time to book a flight from Kansas City to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Kansas City with our price prediction graph.

Cheapflights Insights

Everything you need to know about your flight from Kansas City to Seattle

What is the cheapest month to book a flight from Kansas City to Seattle?

Reviews of airlines servicing Seattle

See what other customers who have flown with Alaska Airlines from Kansas City to Seattle have to say. Users can see the overall rating for each airline as well as how each is rated in terms of entertainment options, comfort, food, crew/service, and boarding process.

Related info for your journey

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

What is the cheapest airline to fly from Kansas City to Seattle round-trip?

Can I find deals for flights from Kansas City to Seattle that include hotel bookings?

How can I find direct flights from Kansas City to Seattle?

Can I find deals for business class flights from Kansas City to Seattle?

What is the cheapest month to book a flight from Kansas City to Seattle?

Traveling to a place near Seattle?

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Alternative routes for Kansas City to Seattle

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Complete your trip

Complete your trip to Seattle by adding a car rental and/or hotel reservation to your travel itinerary.

Search flights from Kansas City to Seattle by cabin class

Find flights from Kansas City to Seattle, based on your preferred cabin class, be it economy, premium economy, business, or first class.

Kansas City and Seattle flights

Browse other Kansas City and Seattle flight options. Last updated on February 4, 2026.

Other flights from Kansas City

Browse through other flights departing from Kansas City. Flights are based on user searches made on Cheapflights and were last updated on February 4, 2026.

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Other flights to Seattle

Explore flights to Seattle departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 4, 2026.

Top airline flying from Kansas City to Seattle

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