Seattle

$224+ Cheap flights from Oshkosh, WI to Seattle (SEA)

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 7/20. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SEA
Jul 24 — Jul 311
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Cheap flight deals from Oshkosh to Seattle

Cheapest flights from Oshkosh to Seattle
Explore the most affordable flight options available from Oshkosh to Seattle. Find the lowest fares from popular airlines and budget airlines, with prices last updated on June 24, 2026.

This Delta deal was found by Cheapflights users on 6/23. 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.
Sat 9/264:19 pm
ATW
-
SEA
1 stop6h 02m
Delta
Tue 9/296:00 am
SEA
-
ATW
1 stop9h 40m
Delta
Deal found 6/23$319
This United Airlines deal was found by Cheapflights users on 6/22. 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 9/165:00 pm
ATW
-
SEA
1 stop7h 45m
United Airlines
Tue 9/2211:03 am
SEA
-
ATW
2 stops9h 55m
United Airlines
Deal found 6/22$324
This Kiwi.com deal was found by Cheapflights users on 6/21. 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.
Fri 10/167:30 am
ATW
-
SEA
1 stop12h 15m
Multiple Airlines
Thu 10/227:41 pm
SEA
-
ATW
1 stop25h 26m
Multiple Airlines
Deal found 6/21$329
This Delta deal was found by Cheapflights users on 6/23. 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.
Tue 9/14:10 pm
ATW
-
SEA
1 stop7h 50m
Delta
Fri 9/1111:59 pm
SEA
-
ATW
1 stop8h 18m
Delta
Deal found 6/23$334
This United Airlines deal was found by Cheapflights users on 6/22. 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.
Sun 9/66:00 am
ATW
-
SEA
1 stop7h 32m
United Airlines
Tue 9/158:40 am
SEA
-
ATW
2 stops10h 58m
United Airlines
Deal found 6/22$335
This United Airlines deal was found by Cheapflights users on 6/23. 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.
Sat 9/266:25 am
ATW
-
SEA
1 stop7h 02m
United Airlines
Tue 9/2911:05 am
SEA
-
ATW
2 stops9h 53m
United Airlines
Deal found 6/23$336
This Delta deal was found by Cheapflights users on 6/23. 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.
Thu 9/102:00 pm
ATW
-
SEA
1 stop10h 10m
Delta
Sun 9/1311:59 pm
SEA
-
ATW
1 stop8h 18m
Delta
Deal found 6/23$349
This Delta deal was found by Cheapflights users on 6/22. 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.
Tue 9/226:00 am
ATW
-
SEA
1 stop6h 39m
Delta
Wed 11/186:05 am
SEA
-
ATW
1 stop8h 36m
Delta
Deal found 6/22$359

Find flight deals from Oshkosh to Seattle

Keep the following information in mind while searching for Oshkosh to Seattle flight deals. Data was last updated June 24, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$319
(Delta)

One-way from

$224
(Kiwi.com)

Popular in

June

Cheapest in

October

Average price

$608
Provider with most accurate pricing for Appleton Intl-Seattle/Tacoma Intl flight deals.
Provider most trusted by Cheapflights users for Appleton Intl-Seattle/Tacoma Intl flights.
From Oshkosh to Seattle/Tacoma Intl
One-way flight from Oshkosh to Seattle/Tacoma Intl
Highest demand for flights based on searches. 11% potential increase in price ($60 potential increase over avg. RT price).
Cheapest flight prices on average. 2% potential price decrease ($14 potential savings vs. average RT price).
Average for round-trip flights in June 2026

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oshkosh to Seattle 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 June 24, 2026.
Use the filters below to find and compare flights from Oshkosh to Seattle that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Sun 9/6

7:00 am-2:34 pm

1 stop9h 34m

Seattle/Tacoma Intl

Tue 9/15

11:59 pm-10:17 am

1 stop8h 18m

$319
Quickest round-trip

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Tue 9/15

4:19 pm-8:21 pm

1 stop6h 02m

Seattle/Tacoma Intl

Sat 9/19

6:00 am-3:37 pm

1 stop7h 37m

$319

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Tue 9/1

4:10 pm-10:00 pm

1 stop7h 50m

Seattle/Tacoma Intl

Sat 9/12

6:00 am-4:26 pm

1 stop8h 26m

$319

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Thu 9/10

2:00 pm-10:10 pm

1 stop10h 10m

Seattle/Tacoma Intl

Tue 9/15

11:59 pm-10:17 am

1 stop8h 18m

$334

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Tue 9/1

4:10 pm-10:00 pm

1 stop7h 50m

Seattle/Tacoma Intl

Fri 9/11

11:59 pm-10:17 am

1 stop8h 18m

$334

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Wed 8/19

2:06 pm-10:05 pm

1 stop9h 59m

Seattle/Tacoma Intl

Wed 8/26

11:59 pm-10:20 am

1 stop8h 21m

$334

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Mon 8/17

4:10 pm-8:50 pm

1 stop6h 40m

Seattle/Tacoma Intl

Tue 8/25

11:59 pm-10:20 am

1 stop8h 21m

$399

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Sat 9/26

6:25 am-8:37 pm

2 stops16h 12m

Seattle/Tacoma Intl

Tue 9/29

8:30 am-10:58 pm

2 stops12h 28m

$429

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Mon 8/31

5:00 pm-10:43 pm

1 stop7h 43m

Seattle/Tacoma Intl

Sat 9/5

10:58 pm-3:28 pm

2 stops14h 30m

$439

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Tue 9/1

6:00 am-4:14 pm

2 stops12h 14m

Seattle/Tacoma Intl

Fri 9/11

7:35 pm-11:30 am

2 stops13h 55m

$505

Flights are sorted by cheapest round-trip flights first.

Deals found on 6/21

Showing 1-10 of 18 resultsSorted by cheapest first
1
2

Best time to book a flight from Oshkosh to Seattle

Have a flexible travel schedule? Discover the best time to fly to Seattle from Oshkosh 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 Oshkosh to Seattle

What is the cheapest time of day to fly from OS9 to SEA?

Find hourly flight availability from Oshkosh to Seattle. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated June 24, 2026.

When flying from Oshkosh to Seattle, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.

Weekly flight availability from Oshkosh to Seattle

Explore weekly flight availability from Oshkosh to Seattle. 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 June 24, 2026.

The most flights from OS9 to SEA are scheduled on a Wednesday (6 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).

How much does it cost to fly round-trip from Oshkosh to Seattle?

Reviews of airlines servicing Seattle

Get insights into the airlines that provide service to Seattle. 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 Seattle. Reviews last updated June 24, 2026.
Read through reviews of airlines operating flights from Oshkosh to Seattle, such as Delta,United Airlines, andAmerican Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.

Food

7.2

Entertainment

7.8

Overall

7.8

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

Food

7.2

Entertainment

7.8

Overall

7.8

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

Food

7.2

Entertainment

7.8

Overall

7.8

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

Food

7.2

Entertainment

7.8

Overall

7.8

Boarding

8.1

Comfort

7.8

Crew

8.5

Reviews

1 / 20
8.0
Excellent

Rakshith,May 2026

TPE - SEA

I got middle seat, but it was cheap $340 for Taipei to PDX ,

Related info for your journey

Find useful and relevant information for your journey from Oshkosh to Seattle. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.
  • What airport do you fly into for flights to Seattle from Oshkosh?

    Most people fly into Seattle/Tacoma Intl (SEA) if they book a flight to Seattle from Oshkosh. On average, Seattle/Tacoma Intl has 0 inbound flights from Oshkosh per day from 6 airlines. Seattle/Tacoma Intl is conveniently located just 11.4 mi from Seattle’s city center.

  • How popular is this Oshkosh to Seattle flight route?

  • How long is the flight from Oshkosh to Seattle?

    Delta can get you from Oshkosh to Seattle in just under 9h 34m. Your travel time can differ by up to . The distance from Oshkosh to Seattle is about 1627 mi.

  • What are the cheapest airlines to fly from Oshkosh to Seattle one-way?

    To fly one-way, consider booking your trip with United Airlines, which is currently one of the cheapest options available, starting at $143. American Airlines flights start at $147 while deals on Delta start at $157 one-way.

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

    No one likes to see their flight delayed. When booking a flight from Oshkosh to Seattle consider choosing Hawaiian Airlines (100%), American Airlines (88%) or Alaska Airlines (87%) as they are the most reliable in getting you off to your destination on time.

  • What are the cheapest flights from Oshkosh to Seattle?

    While on average a flight from Oshkosh to Seattle is generally $759, our data shows the cheapest flight currently is $227. When looking at the most popular route, (Appleton Intl - Seattle/Tacoma Intl), you can expect to pay $319 for that flight.

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

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

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

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

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

    Yes. Cheapflights offers flight deals from Oshkosh to Seattle by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near Seattle?

Book flights to Seattle if you plan to visit one of these locations
SeaTac
Tacoma
Lacey
Leavenworth
Olympia
Ocean Shores
Renton
Edmonds
Snoqualmie
Tumwater
Tukwila
Kent
Lynnwood
Ellensburg
Fife
Marysville
Lakewood
Issaquah
Shoreline
Centralia

Browse thousands of different options on Cheapflights for your next trip

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Top 6 airlines flying from Oshkosh to Seattle

Discover the top 6 airlines that operate flights from Oshkosh to Seattle. 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 June 24, 2026.
AirlineCheapestAverageFlexibilityOn-time
DeltaCheapest$107Average$411FlexibilityNo cancel feeOn-timeN/A
American AirlinesCheapest$178Average$448FlexibilityNo cancel feeOn-time71%
SouthwestCheapest$194Average$385FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$201Average$468FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$206Average$373FlexibilityNo cancel feeOn-time85%
United AirlinesCheapest$226Average$433FlexibilityNo cancel feeOn-time69%

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