Route guide · 1,486 miles
Cheap Flights from Kansas City to Seattle
MCI → SEA · Nonstop 3h 31m · Live round-trip fares
The run from Kansas City (MCI) to Seattle (SEA) is 1,486 miles of sky, and ticket prices on it are anything but steady. One week can cost double the next. Booking about 3–6 weeks in advance — and watching fares with a free Airfare Deal alert — is how regulars on this route keep costs down.
Live fares for MCI → SEA are updating. Use the search below for real-time prices.
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Updated daily
Flight time
3h 31m
Nonstop, typical
Distance
1,486 mi
MCI → SEA
Book ahead
3–6 weeks
Best window, typically
Nonstop airlines
2
American Airlines, Alaska Airlines
Nonstop flights from Kansas City to Seattle
Nonstop flights from Kansas City to Seattle are flown by American Airlines, Alaska Airlines. The 1,486-mile trip takes about 3h 31m gate to gate, and nonstops are usually cheapest when booked 3–6 weeks ahead.
Booking insights: Kansas City → Seattle
- Distance: 1,486 miles · nonstop flight time: 3h 31m.
- Cheapest upcoming week in the live data starts around Oct 15, with fares from $232.
- Fares tend to bottom out when you book about 3–6 weeks ahead — earlier than that rarely helps, later usually hurts.
- If your dates flex by a day or two, shifting to a midweek departure is the easiest saving there is.
- A free fare alert beats daily checking: we watch this route and ping you when prices drop.
Cheapest month · Kansas City → Seattle
October 2026
Every date's recent round-trip fare, at a glance.
Fares from
$232
Cheapest: Wed, Oct 21 — $232
Get this fare →Recent fares found for specific dates in October 2026. Blank days had no recent fare in our data — ask our team and we'll check them for you.
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Flying from Kansas City to Seattle: what you need to know
The flight
At 1,486 miles, this is a long domestic flight — about 3h 31m gate to gate on a nonstop. It deserves a bit of planning: eat before you board or buy early (popular items sell out), and pick your seat with the flight length in mind.
Airlines on this route
American Airlines and Alaska Airlines fly this route nonstop. That matters more than it sounds: the cheapest fare on one carrier is rarely the same product as the cheapest on another. Checked-bag fees, free seat selection and change rules all differ, so compare the full trip cost before you pick a winner. See our airline guides for exactly what each carrier charges — then send an enquiry and we'll confirm the all-in price for your dates.
Leaving from Kansas City (MCI)
Plan to be at the airport two hours before a domestic departure — ninety minutes can work at smaller airports outside peak times, but security lines are the one variable you can't control. If you're checking a bag, add time rather than cutting it close. Our Kansas City airport guide covers terminals, parking and ground transport so you can plan the trip to the airport, not just the flight.
Arriving in Seattle (SEA)
Before you land, know how you're getting from the airport to where you're staying — it's the part of the trip people forget to plan. The Seattle airport guide lays out your ground options, from transit and shuttles to rideshares and rental cars. Flying back the other way? Check Seattle to Kansas City fares — prices on the return direction often move on a different rhythm.
When to book
For a trip of 1,486 miles, booking 3–6 weeks ahead typically lands you in the sweet spot. Leave it to the final two weeks and prices usually climb as the cheapest seats sell out. If your dates are flexible, midweek departures are where the lower fares hide on most domestic routes.
Good to know before you go
- Nonstop time on this route is about 3h 31m — a one-stop itinerary needs to be a lot cheaper to be worth the extra hours.
- Tuesday and Wednesday departures are typically the cheapest days on domestic routes.
- Screenshot your fare before you enquire — prices move, and a saved fare helps our team match or beat it.
- Flexible dates? Search a few days either side — one day can change the fare a lot.
- Morning flights are delayed less often than evening ones — earlier departures have the best on-time record.
Kansas City to Seattle flight FAQs
How long is the flight from MCI to SEA?
Plan on about 3h 31m in the air for a nonstop from Kansas City to Seattle — the route runs roughly 1,486 miles. Connecting flights typically add 2–4 hours.
Are there nonstop flights from Kansas City to Seattle?
American Airlines, Alaska Airlines typically operate nonstop flights from MCI to SEA. Nonstops are usually cheapest when booked 3–6 weeks ahead of departure.
What is the cheapest month to fly from Kansas City to Seattle?
Travelers usually find the gentlest prices away from peak periods — think post-holiday January and the early-fall weeks. Midweek dates inside those windows are cheaper still.
How much are last minute flights from MCI to SEA?
Book inside the final week and you'll usually pay a premium on MCI to SEA. Fares booked 3–6 weeks ahead are almost always kinder.
What is a good round-trip deal from Kansas City to Seattle?
A good deal is anything at or below the recent fares shown above. Set a free Airfare Deal alert and we'll ping you the moment fares drop.
Which airlines fly from Kansas City to Seattle?
You'll mainly see American Airlines, Alaska Airlines on Kansas City to Seattle. Checking each against the live fares below is the surest way to find the lowest price for your dates.
How early should I get to Kansas City airport for this flight?
Plan on two hours before departure for a domestic flight — ninety minutes can work at smaller airports outside peak times. If you're checking a bag, earlier is better; the bag-drop line, not the flight, is what runs late.
Do the cheapest fares on this route include a checked bag?
Usually not. Basic economy fares on most airlines include a carry-on but charge extra for checked bags, and seat selection can cost more too. Add up the real total before comparing — a slightly higher regular fare sometimes works out cheaper. Our team confirms the full breakdown with you before you pay.
More cheap flights from Kansas City
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