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$77+ Cheap flights from Seattle to Milwaukee (SEA - MKE)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/14. Fares are subject to change and may not be available on all flights or dates of travel.
SEA — MKE
Aug 19 — Aug 261
Tue 8/19
Tue 8/26
1 adult, Economy
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Cheapflights Tip: The best prices from Seattle/Tacoma Intl to Milwaukee-Mitchell are usually found in February or September, booked 70 days in advance, depart on a Tuesday or Wednesday and return on a Thursday

Cheap flight deals from Seattle to Milwaukee

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Milwaukee (MKE). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated August 14, 2025.

Round-trip from

$255
(Southwest)

One-way from

$77
(Priceline)

Popular in

December

Cheapest in

February

Average price

$434

Good round-trip deal

$327 or less

Good one-way deal

$228 or less
From Seattle/Tacoma Intl to Milwaukee-Mitchell
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One-way flight from Seattle/Tacoma Intl to Milwaukee-Mitchell
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Highest demand for flights based on searches. 10% potential increase in price ($46 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($15 potential savings vs. average RT price).
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Average for round-trip flights in August 2025
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Price to beat on a round-trip flight from Seattle/Tacoma Intl to Milwaukee-Mitchell.
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Price to beat on a one-way flight from Seattle/Tacoma Intl to Milwaukee-Mitchell.
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Find flight deals from Seattle to Milwaukee

Cheapest flights from Seattle to Milwaukee
Explore the most affordable flight options available from Seattle to Milwaukee. Find the lowest fares from popular airlines and budget airlines, with prices last updated on August 14, 2025.

This Southwest deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/196:30 amSEA - MKE
1 stop10h 00mSouthwest
Sun 9/217:45 amMKE - SEA
1 stop7h 45mSouthwest
Deal found 8/13$255
This Kiwi.com deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 9/136:10 pmSEA - MKE
Nonstop3h 52mHawaiian Airlines
Sat 9/206:27 amMKE - SEA
Nonstop4h 23mHawaiian Airlines
Deal found 8/14$256
This Alaska Airlines deal was found by Cheapflights users on 8/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/36:10 pmSEA - MKE
Nonstop3h 52mAlaska Airlines
Tue 9/93:20 pmMKE - SEA
Nonstop4h 17mAlaska Airlines
Deal found 8/11$257
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/102:00 pmSEA - MKE
1 stop6h 41mUnited Airlines
Sun 9/145:00 amMKE - SEA
1 stop6h 43mUnited Airlines
Deal found 8/12$261
This Southwest deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Southwest is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 11/712:40 pmSEA - MKE
2 stops9h 25mSouthwest
Sun 11/98:05 pmMKE - SEA
1 stop6h 30mSouthwest
Deal found 8/12$262
This United Airlines deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:43 pmSEA - MKE
1 stop9h 16mUnited Airlines
Sun 9/145:00 amMKE - SEA
1 stop6h 43mUnited Airlines
Deal found 8/12$263
This American Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/410:09 amSEA - MKE
1 stop9h 43mAmerican Airlines
Fri 9/122:23 pmMKE - SEA
1 stop7h 46mAmerican Airlines
Deal found 8/14$265
This Delta deal was found by Cheapflights users on 8/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Delta is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:00 amSEA - MKE
1 stop9h 10mDelta
Sun 9/145:49 pmMKE - SEA
1 stop7h 54mDelta
Deal found 8/12$266
This Alaska Airlines deal was found by Cheapflights users on 8/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/106:10 pmSEA - MKE
Nonstop3h 52mAlaska Airlines
Sun 9/146:27 amMKE - SEA
Nonstop4h 23mAlaska Airlines
Deal found 8/14$267
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/510:11 amSEA - MKE
1 stop7h 49mAmerican Airlines
Mon 9/85:05 amMKE - SEA
1 stop6h 16mAmerican Airlines
Deal found 8/13$268
This American Airlines deal was found by Cheapflights users on 8/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 8/2712:20 pmSEA - MKE
1 stop8h 44mAmerican Airlines
Wed 9/32:45 pmMKE - SEA
1 stop9h 44mAmerican Airlines
Deal found 8/13$269

Cheapflights Fare Finder

 
Customize your flight search to find flights from Seattle to Milwaukee that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
Use the filters below to find and compare flights from Seattle to Milwaukee that are best for you.

Fly from

Seattle

Fly to

Milwaukee

Route

Depart

Return

Price

SeattleMilwaukee

SEA - MKE

SEAMKE

Seattle/Tacoma Intl

Fri 9/19

6:30 am-6:30 pm

1 stop10h 00m

Milwaukee-Mitchell

Sun 9/21

7:45 am-1:30 pm

1 stop7h 45m

$255

SeattleMilwaukee

SEA - MKE

SEAMKE

Seattle/Tacoma Intl

Sat 9/13

6:10 pm-12:02 am

Nonstop3h 52m

Milwaukee-Mitchell

Sat 9/20

6:27 am-8:50 am

Nonstop4h 23m

$256

SeattleMilwaukee

SEA - MKE

SEAMKE

Seattle/Tacoma Intl

Wed 9/3

6:10 pm-12:02 am

Nonstop3h 52m

Milwaukee-Mitchell

Tue 9/9

3:20 pm-5:37 pm

Nonstop4h 17m

$257

SeattleMilwaukee

SEA - MKE

SEAMKE

Seattle/Tacoma Intl

Sat 9/13

6:10 pm-12:02 am

Nonstop3h 52m

Milwaukee-Mitchell

Tue 9/16

3:20 pm-5:37 pm

Nonstop4h 17m

$257

SeattleMilwaukee

SEA - MKE

SEAMKE

Seattle/Tacoma Intl

Wed 12/10

7:55 am-1:45 pm

Nonstop3h 50m

Milwaukee-Mitchell

Wed 12/17

2:36 pm-5:00 pm

Nonstop4h 24m

$257

SeattleMilwaukee

SEA - MKE

SEAMKE

Seattle/Tacoma Intl

Wed 9/3

6:10 pm-12:02 am

Nonstop3h 52m

Milwaukee-Mitchell

Wed 9/10

3:20 pm-5:37 pm

Nonstop4h 17m

$257

SeattleMilwaukee

SEA - MKE

SEAMKE

Seattle/Tacoma Intl

Sat 9/27

6:10 pm-12:02 am

Nonstop3h 52m

Milwaukee-Mitchell

Sat 10/4

2:47 pm-5:10 pm

Nonstop4h 23m

$257

SeattleMilwaukee

SEA - MKE

SEAMKE

Seattle/Tacoma Intl

Wed 9/3

6:10 pm-12:02 am

Nonstop3h 52m

Milwaukee-Mitchell

Tue 9/9

3:20 pm-5:37 pm

Nonstop4h 17m

$257

SeattleMilwaukee

SEA - MKE

SEAMKE

Seattle/Tacoma Intl

Wed 9/17

6:10 pm-12:02 am

Nonstop3h 52m

Milwaukee-Mitchell

Wed 10/1

6:27 am-8:50 am

Nonstop4h 23m

$257

SeattleMilwaukee

SEA - MKE

SEAMKE

Seattle/Tacoma Intl

Sun 9/14

6:12 am-2:14 pm

1 stop6h 02m

$77

Flights are sorted by cheapest round-trip flights first.

Deals found on 8/14

Showing 1-10 of 18 results
1
2

Best time to book a flight from Seattle to Milwaukee

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

How far ahead should I book a flight from Seattle to Milwaukee?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Milwaukee. Price data was last updated on August 8, 2025.

The price you pay for your flight from Seattle to Milwaukee may vary depending on when you book. For the best chance of a lower fare, look to book 70 days in advance of your trip. Fares are likely to increase a fortnight or so before your departure date.

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

Currently, February is the cheapest month in which you can book a flight from Seattle to Milwaukee (average of $280). Flying from Seattle to Milwaukee in June is currently the most expensive (average of $376). 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.

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

Find hourly flight availability from Seattle to Milwaukee. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated August 14, 2025.

One of the essential ways to save on airfare from Seattle to Milwaukee is to remain as flexible as possible. Flights that are in the morning tend to be the most expensive. A flight in the evening could potentially save you up to 33% on airfare.

What is the cheapest day to fly from Seattle to Milwaukee?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Milwaukee. Price data was last updated on August 10, 2025.

Travelers seeking maximum savings on their Seattle to Milwaukee flight should consider departing on Friday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Seattle to Milwaukee

Explore weekly flight availability from Seattle to Milwaukee. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated August 14, 2025.

The most flights from SEA to MKE are scheduled on a Wednesday (10 on average). You will have fewer flight options on Monday, which is when the least amount of flights are scheduled (4 on average).

Reviews of airlines servicing Milwaukee

Get insights into the airlines that provide service to Milwaukee. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Milwaukee. Reviews last updated August 14, 2025.
See what other customers who have flown with Alaska Airlines, Delta, and Hawaiian Airlines from Seattle to Milwaukee have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Alaska Airlines
8.0
Very good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Delta
8.0
Very good
7,980 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
Hawaiian Airlines
7.8
Good
2,656 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
United Airlines
7.4
Good
8,916 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.
American Airlines
7.2
Good
10,000 reviews
Alaska Airlines
8.0
Very good
10,000 reviews

Crew

8.5

Boarding

8.1

Food

7.1

Overall

8.0

Entertainment

7.0

Comfort

7.8

Reviews

1 / 20
10.0
Excellent

Jonathan,Jul 2025

SEA - BOS

Fantastic Check-in with easy baggage drop. While it took a while to find out which was the gate, the boarding was a dream, the stewards were simply incredible and the flight fantastic.

Related info for your journey

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

  • What airports do I use to fly from Seattle to Milwaukee?

    If you book a flight from Seattle to Milwaukee, you will be flying from Seattle/Tacoma Intl to Milwaukee-Mitchell. Flights to Milwaukee-Mitchell (MKE) from Seattle/Tacoma Intl (SEA) take 3h 49m for a nonstop flight. There are 6 flights from Seattle/Tacoma Intl to Milwaukee per day from 6 airlines.

  • How popular is this Seattle to Milwaukee flight route?

    Flights from Seattle/Tacoma Intl to Milwaukee-Mitchell have been viewed 2 times in the past calendar month.

  • What are the cheapest airlines flying from Seattle to Milwaukee round-trip?

    Our cheapest airline available from Seattle to Milwaukee is Delta. Our recent data shows that you can find tickets from as low as $210 on this airline. Additional options worth looking into are United Airlines and Hawaiian Airlines, starting at $216 and $228 round-trip. These flights start at 46% lower than the current average price 3 months from now.

  • What are the most reliable airlines from Seattle to Milwaukee?

    Looking for the most reliable airlines to get you to your destination on time? Our data shows these are most likely to get you from Seattle to Milwaukee on time: Alaska Airlines (85%), American Airlines (82%), Hawaiian Airlines (82%).

  • What are the cheapest flights from Seattle to Milwaukee?

    Looking for the cheapest flight from Seattle to Milwaukee? While on average our users pay $587, our data indicates the cheapest price to be $167. The most popular route (Seattle/Tacoma Intl - Milwaukee-Mitchell), is priced around $159.

  • Can I find deals for flights from Seattle to Milwaukee that include hotel bookings?

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

  • How can I find direct flights from Seattle to Milwaukee?

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

  • Can I find deals for business class flights from Seattle to Milwaukee?

    Yes. Cheapflights offers flight deals from Seattle to Milwaukee 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 Seattle to Milwaukee?

    Currently, February is the cheapest month in which you can book a flight from Seattle to Milwaukee (average of $280). Flying from Seattle to Milwaukee in June is currently the most expensive (average of $376). 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.

See more FAQs

Traveling to a place near Milwaukee?

Book flights to Milwaukee if you plan to visit one of these locations
Mequon
Oak Creek
Sheboygan
Wauwatosa

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Alternative routes for Seattle to Milwaukee

See prices for flight routes from nearby airports that may be better suited for you.
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Top 6 airlines flying from Seattle to Milwaukee

Discover the top 6 airlines that operate flights from Seattle to Milwaukee. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated August 14, 2025.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$210Average$338FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$216Average$368FlexibilityNo cancel feeOn-time69%
Hawaiian AirlinesCheapest$228Average$395FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$230Average$365FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$250Average$409FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$258Average$435FlexibilityNo cancel feeOn-time75%

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