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$115+ Cheap flights from Oshkosh, WI to San Diego (SAN)

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 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SAN
Dec 2 — Dec 91
Tue 12/2
Tue 12/9
1 adult, Economy
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Cheapflights Tip: The best prices from Oshkosh to San Diego are usually found in September or July, booked 56 days in advance, depart on a Wednesday or Thursday and return on a Tuesday

Cheap flight deals from Oshkosh to San Diego

Keep the following information in mind while searching for Oshkosh to San Diego flight deals. Data was last updated November 2, 2025.

Most accurate provider

eDreams
3 stars

Most trusted provider

eDreams
3 stars

Round-trip from

$289
(Delta)

One-way from

$115
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$492
Provider with most accurate pricing for Appleton Intl-San Diego flight deals.
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Provider most trusted by Cheapflights users for Appleton Intl-San Diego flights.
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From Oshkosh to San Diego
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One-way flight from Oshkosh to San Diego
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Highest demand for flights based on searches. 13% potential increase in price ($64 potential increase over avg. RT price).
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Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
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Average for round-trip flights in November 2025
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Find flight deals from Oshkosh to San Diego

Cheapest flights from Oshkosh to San Diego
Explore the most affordable flight options available from Oshkosh to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 2, 2025.

This Delta deal was found by Cheapflights users on 11/2. 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.
Sun 11/236:24 amATW - SAN
1 stop6h 42mDelta
Thu 11/276:30 amSAN - ATW
1 stop7h 08mDelta
Deal found 11/2$289
This United Airlines deal was found by Cheapflights users on 11/2. 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 11/235:31 pmATW - SAN
1 stop6h 49mUnited Airlines
Thu 11/2710:00 pmSAN - ATW
2 stops11h 57mUnited Airlines
Deal found 11/2$294
This United Airlines deal was found by Cheapflights users on 11/2. 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 12/241:00 pmATW - SAN
2 stops10h 56mUnited Airlines
Tue 12/307:00 amSAN - ATW
1 stop7h 48mUnited Airlines
Deal found 11/2$369
This United Airlines deal was found by Cheapflights users on 11/2. 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.
Fri 12/56:30 amATW - SAN
1 stop7h 00mUnited Airlines
Sun 12/77:00 amSAN - ATW
1 stop6h 07mUnited Airlines
Deal found 11/2$379
This Delta deal was found by Cheapflights users on 11/2. 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.
Sun 11/95:21 pmATW - SAN
1 stop6h 59mDelta
Sun 11/166:30 amSAN - ATW
1 stop7h 08mDelta
Deal found 11/2$404
This Kiwi.com deal was found by Cheapflights users on 11/2. 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.
Mon 11/102:53 pmATW - SAN
2 stops31h 31mMultiple Airlines
Sat 11/226:52 pmSAN - ATW
1 stop18h 32mMultiple Airlines
Deal found 11/2$433
This Kiwi.com deal was found by Cheapflights users on 11/2. 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 11/142:53 pmATW - SAN
1 stop10h 55mMultiple Airlines
Sat 11/226:52 pmSAN - ATW
1 stop18h 32mMultiple Airlines
Deal found 11/2$436
This American Airlines deal was found by Cheapflights users on 11/1. 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.
Sun 11/166:58 amATW - SAN
1 stop8h 51mAmerican Airlines
Thu 11/203:08 pmSAN - ATW
1 stop6h 25mAmerican Airlines
Deal found 11/1$438
This Kiwi.com deal was found by Cheapflights users on 11/1. 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.
Tue 12/302:38 pmATW - SAN
1 stop23h 33mMultiple Airlines
Sat 1/37:21 pmSAN - ATW
1 stop18h 03mMultiple Airlines
Deal found 11/1$442

Cheapflights Fare Finder

 
Customize your flight search to find flights from Oshkosh to San Diego 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 November 2, 2025.
Use the filters below to find and compare flights from Oshkosh to San Diego that are best for you.

Fly from

Oshkosh

Fly to

San Diego

Route

Depart

Return

Price

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Thu 1/22

2:45 pm-10:33 pm

1 stop9h 48m

San Diego

Sat 1/24

7:00 am-3:04 pm

1 stop6h 04m

$289

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Wed 1/21

6:15 am-1:50 pm

1 stop9h 35m

San Diego

Sun 2/1

6:15 am-5:43 pm

1 stop9h 28m

$289

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Wed 1/28

6:15 am-11:48 am

1 stop7h 33m

San Diego

Sat 1/31

7:00 am-3:04 pm

1 stop6h 04m

$289

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Wed 1/21

6:15 am-1:50 pm

1 stop9h 35m

San Diego

Tue 1/27

11:58 am-9:29 pm

1 stop7h 31m

$289

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Fri 12/5

7:00 am-2:12 pm

1 stop9h 12m

San Diego

Sun 12/7

7:20 am-5:14 pm

1 stop7h 54m

$289

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Wed 1/21

6:15 am-1:50 pm

1 stop9h 35m

San Diego

Mon 2/2

6:15 am-5:43 pm

1 stop9h 28m

$289

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Sun 11/23

5:31 pm-10:20 pm

1 stop6h 49m

San Diego

Thu 11/27

10:00 pm-11:57 am

2 stops11h 57m

$294

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Mon 1/19

5:23 pm-10:33 pm

1 stop7h 10m

San Diego

Fri 1/30

6:30 am-4:48 pm

2 stops8h 18m

$294

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Wed 1/7

3:39 pm-10:37 pm

2 stops8h 58m

San Diego

Wed 1/21

11:08 am-8:50 pm

2 stops7h 42m

$299

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Sun 1/18

6:00 am-12:22 pm

1 stop8h 22m

San Diego

Sat 1/31

6:25 am-2:20 pm

2 stops29h 55m

$311

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/1

Showing 1-10 of 20 results
1
2

Best time to book a flight from Oshkosh to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego 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 San Diego

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

Use this chart to determine the optimal time to book a round-trip flight from Oshkosh to San Diego. Price data was last updated on October 31, 2025.

To ensure you get the cheapest price possible for a flight from Oshkosh to San Diego, you should look to book at least 56 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 San Diego?

Currently, November is the cheapest month in which you can book a flight from Oshkosh to San Diego (average of $152). Flying from Oshkosh to San Diego in March is currently the most expensive (average of $224). 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 SAN?

Find hourly flight availability from Oshkosh to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 2, 2025.

It’s typically best to fly out from Oshkosh to San Diego in the evening. Doing so could potentially save you 14% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Oshkosh to San Diego?

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

Travelers seeking maximum savings on their Oshkosh to San Diego flight should consider departing on Saturday evenings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. 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 San Diego. Reviews last updated November 2, 2025.
Peruse reviews from past customers who have flown with Delta, United Airlines, and American Airlines from Oshkosh to San Diego to help guide your decision. You can also see how each airline stacks up in terms of entertainment options, comfort, food, crew/service, and boarding process.
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

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
7.9
Good
8,001 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

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
8,997 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

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
11,034 reviews
Delta
7.9
Good
8,001 reviews

Comfort

7.9

Entertainment

7.9

Food

7.3

Boarding

8.2

Overall

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 San Diego. 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 San Diego from Oshkosh?

    For a flight from Oshkosh to San Diego, you will be flying into San Diego. San Diego (SAN) is just 2.6 mi from the center of the city. San Diego is the only San Diego airport and it handles 0 inbound flights from Oshkosh per day. 6 airlines have flights to San Diego from Oshkosh on a regular basis.

  • How long is the flight from Oshkosh to San Diego?

    Departing from Oshkosh to San Diego will take you 9h 35m. The distance between Oshkosh and San Diego is about 1730 mi. When browsing for deals, the options you’ll see will be for both nonstop flights and flights with stops.

  • What are the cheapest flights from Oshkosh to San Diego?

    The cheapest flight price from Oshkosh to San Diego is $180. On average you can expect to pay $358. The most popular route, (Appleton Intl - San Diego), can usually be booked for $289.

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

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

  • How can I find direct flights from Oshkosh to San Diego?

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

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

    Yes. Cheapflights offers flight deals from Oshkosh to San Diego 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 San Diego?

    Currently, November is the cheapest month in which you can book a flight from Oshkosh to San Diego (average of $152). Flying from Oshkosh to San Diego in March is currently the most expensive (average of $224). 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 San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
Coronado
La Mesa
Poway
Lemon Grove
National City

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Alternative routes for Oshkosh to San Diego

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

Discover the top 6 airlines that operate flights from Oshkosh to San Diego. 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 November 2, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$121Average$270FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$162Average$257FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$229Average$440FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$235Average$430FlexibilityNo cancel feeOn-time69%
DeltaCheapest$256Average$413FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$276Average$441FlexibilityNo cancel feeOn-time63%

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