Cheap flights from Milwaukee to Seattle from $141

In general, February is the cheapest month to fly from Milwaukee to Seattle. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $247. If you don’t want to visit Seattle in February, then you should wait until January to fly from Milwaukee, when ticket prices are also cheap, with an average price of $297.

On average, the least expensive day to fly to Seattle from Milwaukee is on a Wednesday. momondo users have found tickets for Wednesday departures for as low as $419. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Sunday is the most expensive day to depart from Milwaukee because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $530.

Flying to Seattle from Milwaukee in the afternoon is the least expensive time of day to depart. momondo users have found prices as low as $398 when looking at flights departing in the afternoon. Flights to Seattle are more costly at noon, with an average ticket price of $549. Departure times at noon fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Milwaukee-Mitchell to Seattle/Tacoma Intl for the best Milwaukee-Mitchell - Seattle/Tacoma Intl flight prices

You are more likely to see cheaper flights to Seattle from Milwaukee when booking weeks ahead of your departure date. In general, you can expect to find flights to Seattle for around $366 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Seattle from Milwaukee for as low as $323 on momondo.

There are 4 cabin classes available to choose from on Milwaukee to Seattle flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 2% on your flight if you consider stops on a Milwaukee to Seattle flight.

As of September 2026, prices for Milwaukee to Seattle flights are approximately 0% more expensive when compared to flights at the same time last year.

Delta, Southwest, and United Airlines are the most popular carriers operating from Milwaukee-Mitchell to Seattle/Tacoma Intl

Alaska Airlines, American Airlines and United Airlines are the top three most popular airlines that fly to Seattle from Milwaukee according to our data. Alaska Airlines is the first choice among our users, with 40% of people opting to fly with this airline when traveling to Seattle. Keep in mind that there are 6 different airlines that fly to Seattle on a routine basis, so you have a few additional options to choose from.

Chicago (ORD) was the most common stop: 46% of momondo users choosing 1-stop flights on this route connected there.

Flights via Nashville (BNA) offer the lowest average round-trip price of $321.

Flights connecting via Denver (DEN) have the shortest average one-way travel time: 6h 30m.

Denver (DEN) has the shortest average layover time for this route: 1h 01m.

1 flights are operational daily from Milwaukee to Seattle as of September 2026. The most popular departure time for this route is 3:00PM, with 100% of flights per day taking off in the afternoon.

The number of flights available between Milwaukee and Seattle is 13 per week as of September 2026. The most frequent departure day is Mon, with 23% of weekly flights leaving on this day.