Cheap flights from Seattle to Milwaukee from $99

The cheapest month to fly to Milwaukee from Seattle is in January. Flight prices, which tend to average around $257, are often lower during this time because this is during the off-season. The month of February is another great option to travel to Milwaukee, with average flight prices from Seattle averaging around $267.

According to our data, Thursday is the cheapest day to fly to Milwaukee from Seattle. The lowest ticket price found for a Thursday departure recently was $405. Keep in mind that prices can always vary depending on your route and whether or not you are flying domestic or international. Flights from Seattle to Milwaukee on a Sunday will generally be more expensive and average around $524. Keep in mind that these prices on both days could fluctuate depending on the season and the demand.

In the morning is the cheapest time of day to fly from Seattle to Milwaukee when you can find flight prices for as low as $421. Flying to Milwaukee in the morning is an ideal time because this is during off-peak travel hours. In the afternoon is when there is more demand to fly to Milwaukee, so prices are often more expensive at around $481 per ticket.

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

You are more likely to see cheaper flights to Milwaukee from Seattle when booking weeks ahead of your departure date. In general, you can expect to find flights to Milwaukee for around $390 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Milwaukee from Seattle for as low as $323 on momondo.

There are 4 cabin classes available to choose from on Seattle to Milwaukee 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 20% on your flight if you consider stops on a Seattle to Milwaukee flight.

As of August 2026, prices for Seattle to Milwaukee flights are approximately 40% more expensive when compared to flights at the same time last year.

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

Alaska Airlines, Delta and American Airlines are the top three most popular airlines that fly to Milwaukee from Seattle according to our data. Alaska Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to Milwaukee. Keep in mind that there are 7 different airlines that fly to Milwaukee on a routine basis, so you have a few additional options to choose from.

Chicago (ORD) was the most common stop: 50% of momondo users choosing 1-stop flights on this route connected there.

Flights via Chicago (ORD) offer the lowest average round-trip price of $407.

Flights connecting via Chicago (ORD) have the shortest average one-way travel time: 6h 41m.

Chicago (ORD) has the shortest average layover time for this route: 1h 06m.

As of August 2026, 2 flights take off from Seattle and land in Milwaukee each day. The most common flight departure time for this route is 6:00PM, with 63% of daily flights taking off in the evening.

20 flights are operational weekly from Seattle to Milwaukee as of August 2026. The most popular departure day for this route is Sun, with 30% of flights per week taking off on this day.