San Diego

$282+ Cheap flights from Oshkosh, WI to San Diego (SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 5/10. Fares are subject to change and may not be available on all flights or dates of travel.
MKE — SAN
Mar 6 — Mar 131
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.

Cheap 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 4, 2026.

This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Sun 5/102:53 pm
ATW
-
SAN
1 stop25h 32m
Multiple Airlines
Thu 5/143:20 pm
SAN
-
ATW
1 stop29h 11m
Multiple Airlines
Deal found 2/2$282
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/43:42 pm
ATW
-
SAN
1 stop9h 02m
United Airlines
Fri 3/1310:30 pm
SAN
-
ATW
1 stop7h 51m
United Airlines
Deal found 2/3$309
This United Airlines deal was found by Cheapflights users on 2/3. 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 3/42:39 pm
ATW
-
SAN
2 stops9h 56m
United Airlines
Sat 3/1410:30 pm
SAN
-
ATW
1 stop7h 51m
United Airlines
Deal found 2/3$314
This United Airlines deal was found by Cheapflights users on 2/2. 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 3/43:42 pm
ATW
-
SAN
2 stops9h 58m
United Airlines
Wed 3/118:50 pm
SAN
-
ATW
2 stops9h 31m
United Airlines
Deal found 2/2$319
This American Airlines deal was found by Cheapflights users on 2/1. 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 3/81:25 pm
ATW
-
SAN
1 stop10h 18m
American Airlines
Sat 3/146:20 am
SAN
-
ATW
1 stop9h 42m
American Airlines
Deal found 2/1$322
This Kiwi.com deal was found by Cheapflights users on 2/2. 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.
Sun 4/262:53 pm
ATW
-
SAN
1 stop25h 32m
Multiple Airlines
Wed 4/292:47 pm
SAN
-
ATW
2 stops21h 16m
Multiple Airlines
Deal found 2/2$328
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/211:25 pm
ATW
-
SAN
1 stop8h 55m
American Airlines
Tue 2/2410:35 pm
SAN
-
ATW
1 stop8h 31m
American Airlines
Deal found 2/2$334
This American Airlines deal was found by Cheapflights users on 2/3. 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 4/21:25 pm
ATW
-
SAN
1 stop10h 19m
American Airlines
Tue 4/710:40 pm
SAN
-
ATW
1 stop12h 20m
American Airlines
Deal found 2/3$335
This United Airlines deal was found by Cheapflights users on 2/1. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 5/165:33 pm
ATW
-
SAN
2 stops8h 26m
United Airlines
Sun 5/2410:49 am
SAN
-
ATW
2 stops8h 16m
United Airlines
Deal found 2/1$344
This American Airlines deal was found by Cheapflights users on 2/2. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/81:25 pm
ATW
-
SAN
1 stop10h 18m
American Airlines
Fri 3/133:19 pm
SAN
-
ATW
1 stop15h 47m
American Airlines
Deal found 2/2$345
This American Airlines deal was found by Cheapflights users on 2/3. 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 10/219:55 am
ATW
-
SAN
1 stop6h 10m
American Airlines
Wed 10/281:18 pm
SAN
-
ATW
1 stop7h 50m
American Airlines
Deal found 2/3$359

Find 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 4, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$282
(Kiwi.com)

Popular in

March

Cheapest in

September

Average price

$398
Provider with most accurate pricing for Appleton Intl-San Diego flight deals.
Provider most trusted by Cheapflights users for Appleton Intl-San Diego flights.
From Oshkosh to San Diego
Highest demand for flights based on searches. 7% potential increase in price ($35 potential increase over avg. RT price).
Cheapest flight prices on average. 3% potential price decrease ($17 potential savings vs. average RT price).
Average for round-trip flights in February 2026

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 February 4, 2026.
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

Sat 5/16

6:15 am-11:25 am

1 stop7h 10m

San Diego

Sun 5/24

6:40 am-3:12 pm

1 stop6h 32m

$309

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Mon 5/4

2:43 pm-10:34 pm

1 stop9h 51m

San Diego

Tue 5/12

12:40 pm-8:56 pm

1 stop6h 16m

$309

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Wed 3/4

3:42 pm-10:44 pm

1 stop9h 02m

San Diego

Fri 3/13

10:30 pm-8:21 am

1 stop7h 51m

$309

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Mon 5/11

2:43 pm-10:34 pm

1 stop9h 51m

San Diego

Sat 5/16

1:59 pm-10:45 pm

1 stop6h 46m

$309

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Tue 2/17

5:23 pm-10:44 pm

1 stop7h 21m

San Diego

Wed 2/25

11:30 am-8:56 pm

1 stop7h 26m

$334

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Thu 4/2

1:25 pm-9:44 pm

1 stop10h 19m

San Diego

Tue 4/7

10:40 pm-1:00 pm

1 stop12h 20m

$335

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Sun 2/15

2:39 pm-10:44 pm

1 stop10h 05m

San Diego

Sat 2/21

11:30 am-8:56 pm

1 stop7h 26m

$359

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Wed 2/18

3:42 pm-10:44 pm

1 stop9h 02m

$327

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Sat 3/14

11:14 am-10:27 pm

2 stops13h 13m

$388

AppletonSan Diego

ATW - SAN

ATWSAN

Appleton Intl

Wed 2/18

2:53 pm-7:40 am

3 stops42h 47m

$394

Flights are sorted by cheapest round-trip flights first.

Deals found on 2/3

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 January 30, 2026.

To ensure you get the cheapest price possible for a flight from Oshkosh to San Diego, you should look to book at least 69 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 $168). Flying from Oshkosh to San Diego in December is currently the most expensive (average of $256). 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 4, 2026.

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.

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 4, 2026.
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.

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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

Entertainment

7.8

Boarding

8.1

Comfort

7.9

Overall

7.9

Crew

8.5

Food

7.2

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. 7 airlines have flights to San Diego from Oshkosh on a regular basis.

  • How popular is this Oshkosh to San Diego flight route?

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

    Departing from Oshkosh to San Diego will take you 7h 10m. The distance between Oshkosh and San Diego is about 1730 mi.

  • 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 $114. Users have also found prices from $159 and $169 on United Airlines and Delta, respectively.

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

    The cheapest flight price from Oshkosh to San Diego is $249. On average you can expect to pay $368. The most popular route, (Appleton Intl - San Diego), can usually be booked for $282.

  • 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 $168). Flying from Oshkosh to San Diego in December is currently the most expensive (average of $256). 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
National City
Coronado
La Mesa
Poway
Julian
Lemon Grove

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.

Top 7 airlines flying from Oshkosh to San Diego

Discover the top 7 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 4, 2026.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$89Average$250FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$173Average$243FlexibilityNo cancel feeOn-time65%
American AirlinesCheapest$216Average$444FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$235Average$411FlexibilityNo cancel feeOn-time69%
DeltaCheapest$256Average$402FlexibilityNo cancel feeOn-timeN/A
SouthwestCheapest$275Average$436FlexibilityNo cancel feeOn-time63%
Alaska AirlinesCheapest$372Average$691FlexibilityNo cancel feeOn-time75%

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.