HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$120+ 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 4/15. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SAN
Feb 25 — Mar 41
Tue 2/25
Tue 3/4
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Oshkosh to San Diego with Cheapflights

1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”
2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.
3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

The best prices from Oshkosh to San Diego are usually found in August or October, booked 79 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 February 20, 2025.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$229
(American Airlines)

One-way from

$120
(American Airlines)

Popular in

March

Cheapest in

August

Average price

$424
Provider with most accurate pricing for Appleton Intl-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Appleton Intl-San Diego flights.
Search Deals
From Oshkosh to San Diego
Search Deals
One-way flight from Oshkosh to San Diego
Search Deals
Highest demand for flights based on searches. 17% potential increase in price ($89 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease ($23 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in February 2025
Search Deals

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 February 20, 2025.

This American Airlines deal was found by Cheapflights users on 2/19. 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.
Tue 4/17:50 amATW - SAN
1 stop6h 49mAmerican Airlines
Tue 4/291:41 pmSAN - ATW
1 stop7h 43mAmerican Airlines
Deal found 2/19$229
This Delta deal was found by Cheapflights users on 2/20. 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 4/154:22 pmATW - SAN
1 stop6h 04mDelta
Wed 4/306:15 amSAN - ATW
1 stop7h 27mDelta
Deal found 2/20$338
This United Airlines deal was found by Cheapflights users on 2/19. 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.
Thu 3/2712:50 pmATW - SAN
1 stop8h 05mUnited Airlines
Tue 4/19:30 pmSAN - ATW
2 stops12h 34mUnited Airlines
Deal found 2/19$355
This Mytrip deal was found by Cheapflights users on 2/19. 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 3/272:08 pmATW - SAN
2 stops26h 26mMultiple Airlines
Tue 4/18:07 pmSAN - ATW
3 stops23h 55mMultiple Airlines
Deal found 2/19$451

Find flights from Oshkosh to San Diego within your budget

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 February 20, 2025.

Fly from

Oshkosh

Fly to

San Diego

Route

Depart

Return

Price

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Tue 4/1

7:50 am-12:39 pm

1 stop6h 49m

San Diego

Tue 4/29

1:41 pm-11:24 pm

1 stop7h 43m

$229

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Tue 4/15

4:22 pm-8:26 pm

1 stop6h 04m

San Diego

Wed 4/30

6:15 am-3:42 pm

1 stop7h 27m

$338

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Thu 3/27

12:50 pm-6:55 pm

1 stop8h 05m

San Diego

Tue 4/1

9:30 pm-12:04 pm

2 stops12h 34m

$355

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Thu 3/27

2:08 pm-2:34 pm

2 stops26h 26m

San Diego

Tue 4/1

8:07 pm-10:02 pm

3 stops23h 55m

$451

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Tue 3/25

5:05 pm-10:48 pm

1 stop7h 43m

$139

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Sat 3/15

2:39 pm-7:17 pm

1 stop6h 38m

$160

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Thu 3/20

5:25 pm-11:59 pm

1 stop8h 34m

$267

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/20

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.

Travel insights for flights from Oshkosh to San Diego

Get recent, data-driven insights about flights from Oshkosh to San Diego including ideal travel times, pricing trends, and more.

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 February 14, 2025.

To ensure you get the cheapest price possible for a flight from Oshkosh to San Diego, you should look to book at least 79 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, August is the cheapest month in which you can book a flight from Oshkosh to San Diego (average of $286). Flying from Oshkosh to San Diego in March is currently the most expensive (average of $366). 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 February 20, 2025.

When flying from Oshkosh to San Diego, 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 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 afternoons when fares are most often at their lowest. Monday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Rainfall in San Diego by month

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

In terms of precipitation, rainfall in San Diego ranges from 0.0 - 2.3 inches per month. February is typically the wettest month, when rainfall can reach 2.3 in. July is typically the driest time to visit San Diego when rainfall is around 0.0 in.

Temperature in San Diego by month

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

If weather is an important factor for your trip to San Diego, use this chart to help with planning. For those seeking warmer temperatures, August is the ideal time of year to visit, when temperatures reach an average of 71.6 F. Travelers looking to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 57.2 F).

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 February 20, 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
8.0
Very good
8,220 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
8,220 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
8,766 reviews
Delta
8.0
Very good
8,220 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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
8,220 reviews

Comfort

8.0

Overall

8.0

Crew

8.5

Food

7.3

Boarding

8.2

Entertainment

7.9

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.

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

    For one-way options, check prices for American Airlines. According to our data, you can fly for as low as $120. Users have also found prices from $139 and $226 on Delta and United Airlines, respectively.

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

    The cheapest flight price from Oshkosh to San Diego is $417. On average you can expect to pay $527. The most popular route, (Appleton Intl - San Diego), can usually be booked for $229.

  • 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, August is the cheapest month in which you can book a flight from Oshkosh to San Diego (average of $286). Flying from Oshkosh to San Diego in March is currently the most expensive (average of $366). 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
El Cajon
Chula Vista
Lemon Grove
National City
Imperial Beach
La Mesa
Alpine
Poway
Santee
Coronado
Borrego Springs

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Oshkosh to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
O'Hare Intl to Las Vegas flights
Minneapolis to Las Vegas flights
O'Hare Intl to Los Angeles flights
O'Hare Intl to San Francisco flights
Minneapolis to Los Angeles flights
O'Hare Intl to San Diego flights
Milwaukee to Las Vegas flights
O'Hare Intl to Santa Ana flights
Minneapolis to San Diego flights
Minneapolis to San Francisco flights
O'Hare Intl to Burbank flights
O'Hare Intl to Ontario flights
O'Hare Intl to Palm Springs flights
Minneapolis to Palm Springs flights
Minneapolis to Ontario flights
O'Hare Intl to Oakland flights
Minneapolis to Santa Ana flights
O'Hare Intl to Sacramento flights
O'Hare Intl to San Jose flights
O'Hare Intl to Reno flights
Madison to Las Vegas flights
Appleton to Las Vegas flights
Milwaukee to Los Angeles flights
Milwaukee to San Diego flights
Minneapolis to Sacramento flights
Madison to San Francisco flights
Milwaukee to San Francisco flights
Green Bay to Las Vegas flights
Minneapolis to Reno flights
O'Hare Intl to Fresno flights
Minneapolis to San Jose flights
Minneapolis to Burbank flights
Minneapolis to Fresno flights
Appleton to Los Angeles flights
Minneapolis to Long Beach flights
Madison to Los Angeles flights
Madison to San Diego flights
O'Hare Intl to Long Beach flights
Milwaukee to Palm Springs flights
Milwaukee to Burbank flights
Milwaukee to Reno flights
O'Hare Intl to Santa Barbara flights
Milwaukee to Ontario flights
Appleton to San Diego flights
Minneapolis to Oakland flights
Milwaukee to San Jose flights
Milwaukee to Santa Ana flights
Duluth to Las Vegas flights
Madison to Ontario flights
Wausau to Las Vegas flights

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 February 20, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$112Average$231FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$162Average$256FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$197Average$426FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$228Average$474FlexibilityNo cancel feeOn-time69%
DeltaCheapest$231Average$402FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$336Average$455FlexibilityNo cancel feeOn-time63%
100% Free
Cheapflights is completely free to use, so you can start saving the moment you arrive.
Book with Flexibility
Our users can plan ahead with confidence and find flights with no change fees
Travel Smart
Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.