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$166+ 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 6/15. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SEA
Apr 22 — Apr 291
Tue 4/22
Tue 4/29
1 adult, Economy
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Cheapflights Tip: The best prices from Oshkosh to Seattle/Tacoma Intl are usually found in February or January, booked 40 days in advance, depart on a Tuesday or Monday and return on a Saturday

Cheap flight deals from Oshkosh to Seattle

Keep the following information in mind while searching for Oshkosh to Seattle flight deals. Data was last updated April 17, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$271
(Delta)

One-way from

$166
(Delta)

Popular in

July

Cheapest in

February

Average price

$386
Provider with most accurate pricing for Appleton Intl-Seattle/Tacoma Intl flight deals.
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Provider most trusted by Cheapflights users for Appleton Intl-Seattle/Tacoma Intl flights.
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From Oshkosh to Seattle/Tacoma Intl
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One-way flight from Oshkosh to Seattle/Tacoma Intl
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Highest demand for flights based on searches. 23% potential increase in price ($140 potential increase over avg. RT price).
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Cheapest flight prices on average. 4% potential price decrease ($19 potential savings vs. average RT price).
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Average for round-trip flights in April 2025
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Find 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 April 17, 2025.

This Delta deal was found by Cheapflights users on 4/17. 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 8/165:20 pmATW - SEA
1 stop7h 25mDelta
Wed 8/276:05 amSEA - ATW
1 stop7h 25mDelta
Deal found 4/17$271
This United Airlines deal was found by Cheapflights users on 4/17. 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 5/103:44 pmATW - SEA
2 stops11h 15mUnited Airlines
Sat 5/247:00 amSEA - ATW
1 stop6h 08mUnited Airlines
Deal found 4/17$350
This American Airlines deal was found by Cheapflights users on 4/17. 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 6/56:15 pmATW - SEA
1 stop8h 02mAmerican Airlines
Mon 6/912:05 amSEA - ATW
1 stop7h 15mAmerican Airlines
Deal found 4/17$355
This Mytrip deal was found by Cheapflights users on 4/17. 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 Mytrip is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 6/53:16 pmATW - SEA
2 stops34h 54mMultiple Airlines
Tue 6/103:20 pmSEA - ATW
1 stop21h 57mMultiple Airlines
Deal found 4/17$370

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 April 17, 2025.
Use the filters below to find and compare flights from Oshkosh to Seattle that are best for you.

Fly from

Oshkosh

Fly to

Seattle

Route

Depart

Return

Price

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Sat 8/16

5:20 pm-10:45 pm

1 stop7h 25m

Seattle/Tacoma Intl

Wed 8/27

6:05 am-3:30 pm

1 stop7h 25m

$271

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Sat 5/10

3:44 pm-12:59 am

2 stops11h 15m

Seattle/Tacoma Intl

Sat 5/24

7:00 am-3:08 pm

1 stop6h 08m

$350

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Thu 6/5

6:15 pm-12:17 am

1 stop8h 02m

Seattle/Tacoma Intl

Mon 6/9

12:05 am-9:20 am

1 stop7h 15m

$355

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Thu 6/5

3:16 pm-12:10 am

2 stops34h 54m

Seattle/Tacoma Intl

Tue 6/10

3:20 pm-3:17 pm

1 stop21h 57m

$370

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Sun 6/15

6:25 am-10:45 am

1 stop6h 20m

$166

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Sun 6/15

3:16 pm-3:03 pm

2 stops25h 47m

$213

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Sun 8/3

5:29 pm-8:57 pm

2 stops29h 28m

$398

AppletonSeattle

ATW - SEA

ATWSEA

Appleton Intl

Fri 5/9

4:37 pm-11:09 pm

1 stop8h 32m

$511

Flights are sorted by cheapest round-trip flights first.

Deals found on 4/16

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

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

Use this chart to determine the optimal time to book a round-trip flight from Oshkosh to Seattle. Price data was last updated on April 11, 2025.

To ensure you get the cheapest price possible for a flight from Oshkosh to Seattle, you should look to book at least 40 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

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

Currently, January is the cheapest month in which you can book a flight from Oshkosh to Seattle (average of $238). Flying from Oshkosh to Seattle in July is currently the most expensive (average of $411). 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 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 April 17, 2025.

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.

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

Use this chart to determine the cheapest time to fly round-trip from Oshkosh to Seattle. Price data was last updated on December 16, 2024.

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

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 April 17, 2025.

The most flights from OS9 to SEA are scheduled on a Monday (4 on average). You will have fewer flight options on Thursday, which is when the least amount of flights are scheduled (1 on average).

Rainfall in Seattle by month

Plan your trip to Seattle by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in Seattle ranges from 0.7 - 6.6 inches per month. November is typically the wettest month, when rainfall can reach 6.6 in. July is typically the driest time to visit Seattle when rainfall is around 0.7 in.

Temperature in Seattle by month

Plan your trip to Seattle by taking into account the average temperature totals by month.

If weather is an important factor for your trip to Seattle, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 66.2 F. Travelers looking to avoid the cold should look outside of December, when temperatures are typically at their lowest (around 41.0 F).

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 April 17, 2025.
Delta
8.0
Very good
7,917 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
Delta
8.0
Very good
7,917 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
United Airlines
7.4
Good
8,667 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception
American Airlines
7.2
Good
10,000 reviews
Delta
8.0
Very good
7,917 reviews

Food

7.3

Overall

8.0

Boarding

8.2

Entertainment

7.9

Comfort

7.9

Crew

8.5

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

TUS - LAX

Delta has consistently been the best U.S. airline for my travels and this flight was no exception

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 9 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?

    Flights from Oshkosh to Seattle/Tacoma Intl have been viewed 25 times in the past calendar month.

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

    To fly one-way, consider booking your trip with Delta, which is currently one of the cheapest options available, starting at $166. United Airlines flights start at $398 while deals on American Airlines start at $511 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 American Airlines (84%), Alaska Airlines (84%) or Air Tahiti Nui (84%) 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 $733, our data shows the cheapest flight currently is $145. When looking at the most popular route, (Appleton Intl - Seattle/Tacoma Intl), you can expect to pay $271 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.

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

    Currently, January is the cheapest month in which you can book a flight from Oshkosh to Seattle (average of $238). Flying from Oshkosh to Seattle in July is currently the most expensive (average of $411). 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 Oshkosh?

Book flights to Oshkosh if you plan to visit one of these locations
SeaTac
Tukwila
Tacoma
Renton
Lakewood
Ocean Shores
Lacey
Leavenworth
Federal Way
Olympia
Shoreline
Cle Elum
Centralia
Aberdeen
Kent
Lynnwood
Shelton
Silverdale
Redmond
Issaquah

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Top 9 airlines flying from Oshkosh to Seattle

Discover the top 9 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 April 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$122Average$296FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$130Average$235FlexibilityNo cancel feeOn-time65%
Sun Country AirCheapest$152Average$350FlexibilityNo cancel feeOn-time83%
DeltaCheapest$177Average$476FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$228Average$487FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$229Average$517FlexibilityNo cancel feeOn-time71%
Hawaiian AirlinesCheapest$257Average$425FlexibilityNo cancel feeOn-time85%
Alaska AirlinesCheapest$262Average$472FlexibilityNo cancel feeOn-time75%
SouthwestCheapest$269Average$487FlexibilityNo cancel feeOn-time63%

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