To Seattle

Cheap Flights from Kansas City to Seattle

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RatePunk searches hundreds of travel sites at once for deals on flights to Seattle

Prices updated 24 days ago

486,190 searches this week

171 airlines compared

80%+ AI score for best value

Fares are subject to change and may not be available for all dates. (Data last updated May 29, 2026.)

Today’s best flight deals from Kansas City to Seattle

Explore current cheapest deals departing from Kansas City to Seattle

Round trip

Sort by: Cheapest

October 19 - October 20

Cheapest

MCI - Seattle

$326

$204

Round trip

October 26 - October 27

MCI - Seattle

$331

$225

Round trip

October 27 - November 18

MCI - Seattle

$295

$225

Round trip

October 27 - October 28

MCI - Seattle

$331

$225

Round trip

October 19 - October 27

MCI - Seattle

$315

$225

Round trip

November 2 - November 18

Best

MCI - Seattle

$385

$231

Round trip

October 26 - October 28

MCI - Seattle

$332

$231

Round trip

October 19 - November 18

MCI - Seattle

$289

$231

Round trip

August 4 - August 6

Earliest

MCI - Seattle

$356

$243

Round trip

August 21 - August 26

MCI - Seattle

$348

$257

Round trip

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Route Intelligence — 486,190 Searches this Week

Insights for flights from Kansas City to Seattle

Flights from Kansas City to Seattle cover a distance of 2392 kilometers, classifying this as a medium-haul route. Right now, fares for cheap flights from Kansas City to Seattle are typically $387–$845, with a median of $624. Current fares are near the typical level, and 0% of recent fares were classified as a good price. New deals appear almost daily for this route.

When is the cheapest time to fly from Kansas City to Seattle? The data indicates that January is the cheapest month to fly, with a median fare of $224. Following closely, April offers a median fare of $293, and February has a median of $301, making these months generally more affordable for this route.

For direct flights from Kansas City to Seattle, 27% of recent fares are non-stop. This means most itineraries connect at least once, with the typical connecting itinerary involving 2 stopovers.

How long is the flight from Kansas City to Seattle? A typical journey from Kansas City to Seattle, including connections, takes approximately 13h 16m. This duration reflects the prevalence of connecting flights on this route.

How much is a round trip from Kansas City to Seattle

Regular price: $268 - $493

Prices for flights from Kansas City to Seattle are currently below the regular range.

The regular price range for this route is $268 to $493. The current lowest deal is $204 with Frontier Airlines, for travel from Oct 19 to Oct 20.

now $204

Low $268

High $493

The cheapest time to fly from Kansas City to Seattle

The cheapest month to fly from Kansas City to Seattle is January, with a median price of $224. The most expensive month is November, with a median price of $809. Generally, prices are lower from January to December.

January

Cheapest

Flights from $224

November

Most Expensive

Flights from $809

Jan

Feb

Mar

Apr

May

Jun

Jul

Aug

Sep

Oct

Nov

Dec

Direct flights from Kansas City to Seattle

Alaska Airlines, Inc.

Last-minute flights going from Kansas City to Seattle

Wed, Jun 17

⌛ Last-Minute

MCI - Seattle

Kansas City (MCI) - Seattle (SEA)

Alaska Airlines, Inc.

$739

$591

One-way

Thu, Jun 18

⌛ Last-Minute

MCI - Seattle

Kansas City (MCI) - Seattle (SEA)

Frontier Airlines

$815

$480

One-way

Fri, Jun 19

⌛ Last-Minute

MCI - Seattle

Kansas City (MCI) - Seattle (SEA)

Alaska Airlines, Inc.

$731

$428

One-way

Fri, Jun 19

⌛ Last-Minute

MCI - Seattle

Kansas City (MCI) - Seattle (SEA)

Frontier Airlines

$697

$531

One-way

Sat, Jun 20

⌛ Last-Minute

MCI - Seattle

Kansas City (MCI) - Seattle (SEA)

Frontier Airlines

$697

$448

One-way

Tue, Jun 23

⌛ Last-Minute

MCI - Seattle

Kansas City (MCI) - Seattle (SEA)

Frontier Airlines

$756

$448

One-way

Biggest price drops on these dates for flights from Kansas City to Seattle

3 nights

Jun 18 - Jun 21

$815 → $480

41%

1 night

Jun 29 - Jun 30

$664 → $342

48%

2 nights

Jun 23 - Jun 25

$756 → $448

41%

2 nights

Jun 19 - Jun 21

$731 → $428

41%

Popular Airports to fly from Kansas City to Seattle

Kansas City - Seattle route insights

💸 Price insights

Recent fares are below the typical level

Recent fares from Kansas City to Seattle are below the typical level at $204.

📅 Best time to fly

January is historically the cheapest month to fly

Historically, January is the cheapest month to fly from Kansas City to Seattle, with a median price of $224.

⏱️ Flight duration

Connecting flights typically take 13h 16m

The typical flight duration from Kansas City to Seattle is 13h 16m, with 2 stopovers.

✈️ Airlines & availability

Connecting flights are dominant on this route

Connecting flights make up 73% of all deals from Kansas City to Seattle.

🏆 Airline highlight

Alaska Airlines, Inc. offers direct flights

Alaska Airlines, Inc. is one airline that offers direct flights from Kansas City to Seattle.

🎯 Booking tip

Deals are frequent for this route

Deals from Kansas City to Seattle are frequent, with over 1 deals per day historically.

Kansas City main airports to depart from

Kansas City International (MCI)

Cheapest

Kansas City International Airport is a great option for flights from Kansas City to Seattle.

📍 ~25 km from Kansas City (reachable by car)

💸 Flights from ~$204

Seattle main airports to arrive at

Seattle–Tacoma International (SEA)

Cheapest

Seattle–Tacoma International Airport is a convenient arrival choice for flights from Kansas City to Seattle.

📍 ~20 km from Seattle city center (reachable by car)

💸 Flights from ~$204

Boeing Field (BFI)

Boeing Field offers an alternative arrival option for your journey from Kansas City to Seattle.

📍 ~10 km from Seattle city center (reachable by car)

💸 Flights from ~$662

Kenmore Air Harbor Seaplane Base (LKE)

Kenmore Air Harbor Seaplane Base is another arrival option for flights from Kansas City to Seattle.

📍 ~5 km from Seattle city center (reachable by car)

💸 Flights from ~$1420

Airports nearby Seattle used as alternative

Paine Field Everett (PAE)

Paine Field Everett (PAE) is a convenient alternative for North Seattle residents, offering shorter security wait times.

📍 ~25 km from Seattle (reachable by car)

💸 Flights from ~$375

Portland International (PDX)

Cheapest

Portland International (PDX) is a major hub that can be a price competitor for domestic and international flights.

📍 ~230 km from Seattle (reachable by car or train)

💸 Flights from ~$213

Vancouver International (YVR)

Vancouver International (YVR) is a major international gateway with extensive flight options and high-quality facilities.

📍 ~200 km from Seattle (reachable by car, crossing an international border)

💸 Flights from ~$374

Bellingham International (BLI)

Bellingham International (BLI) is a primary low-cost carrier airport, often featuring budget-friendly fares.

📍 ~145 km from Seattle (reachable by car)

💸 Flights from ~$241

Abbotsford International (YXX)

Abbotsford International (YXX) is an alternative low-cost gateway for Canadian domestic connections.

📍 ~150 km from Seattle (reachable by car, crossing an international border)

💸 Flights from ~$392

Business & First Class Flight Deals to Seattle

66% AI deal score

$1,118

From MCI

Elite

Jun 24

Seattle, United States

48% AI deal score

$1,300

Frequently Asked Questions About Flights to Seattle

Historically, the best prices for flights from Kansas City to Seattle are found when booking 28-59 days in advance. During this period, the average price was $643. Booking 14-27 days out typically saw an average price of $673. Prices tend to be higher for last-minute bookings, with flights booked 7-13 days out averaging $820.

Across the trailing quarter, a good price for a flight from Kansas City to Seattle was $387 or less. The median price for this route was $624. Flights priced at $845 or more were in the more expensive range during this period.

Historically, January has been the cheapest month to fly from Kansas City to Seattle, with a median price of $224. April also offered competitive prices, with a median of $293. The annual median price for this route was $624, indicating significant savings are possible by choosing to fly in these historically cheaper months.

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Cheap Flights from Kansas City to Seattle

Today’s best flight deals from Kansas City to Seattle

Unlock all 500+ flight deals to Seattle and get alerts when great deals appear

Route Intelligence — 486,190 Searches this Week

Insights for flights from Kansas City to Seattle

How much is a round trip from Kansas City to Seattle

The cheapest time to fly from Kansas City to Seattle

Direct flights from Kansas City to Seattle

Last-minute flights going from Kansas City to Seattle

Biggest price drops on these dates for flights from Kansas City to Seattle

Popular Airports to fly from Kansas City to Seattle

Kansas City - Seattle route insights

Recent fares are below the typical level

January is historically the cheapest month to fly

Connecting flights typically take 13h 16m

Connecting flights are dominant on this route

Alaska Airlines, Inc. offers direct flights

Deals are frequent for this route

Kansas City main airports to depart from

Seattle main airports to arrive at

Airports nearby Seattle used as alternative

Business & First Class Flight Deals to Seattle

Best Elite deals to Seattle

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Frequently Asked Questions About Flights to Seattle

How early should I book Kansas City to Seattle flights to get the cheapest price?

How early should I book Kansas City to Seattle flights to get the cheapest price?

How much should a flight from Kansas City to Seattle cost?

How much should a flight from Kansas City to Seattle cost?

What's the best month to fly from Kansas City to Seattle?

What's the best month to fly from Kansas City to Seattle?

Can I fly direct from Kansas City to Seattle?

Can I fly direct from Kansas City to Seattle?

What's the flight time from Kansas City to Seattle?