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Cheap Flights from Appleton to San Diego

Compare Appleton to San Diego flight deals

Find the cheapest month or even day of the year to fly to San Diego

Book the best San Diego fare with no extra fees

Flight deals from Appleton to San Diego

Looking for a cheap last-minute deal or the best return flight from Appleton Airport to San Diego? If you want to travel next month, return fares start from $584. Find the lowest prices on one-way and return tickets right here.
San Diego.$563 per passenger.Departing Wed, 16 Sep, returning Wed, 23 Sep.Return flight with United.Outbound indirect flight with United, departs from Appleton on Wed, 16 Sep, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Wed, 23 Sep, arriving in Appleton.Price includes taxes and charges.From $563, select.
San Diego.$582 per passenger.Departing Thu, 30 Jul, returning Tue, 4 Aug.Return flight with United.Outbound indirect flight with United, departs from Appleton on Thu, 30 Jul, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Tue, 4 Aug, arriving in Appleton.Price includes taxes and charges.From $582, select.
San Diego.$582 per passenger.Departing Fri, 7 Aug, returning Tue, 11 Aug.Return flight with United.Outbound indirect flight with United, departs from Appleton on Fri, 7 Aug, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Tue, 11 Aug, arriving in Appleton.Price includes taxes and charges.From $582, select.
San Diego.$584 per passenger.Departing Wed, 6 May, returning Wed, 13 May.Return flight with United.Outbound indirect flight with United, departs from Appleton on Wed, 6 May, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Wed, 13 May, arriving in Appleton.Price includes taxes and charges.From $584, select.
San Diego.$617 per passenger.Departing Wed, 13 Jan, returning Mon, 18 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Appleton on Wed, 13 Jan, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Mon, 18 Jan, arriving in Appleton.Price includes taxes and charges.From $617, select.
San Diego.$622 per passenger.Departing Fri, 26 Jun, returning Sat, 11 Jul.Return flight with United.Outbound indirect flight with United, departs from Appleton on Fri, 26 Jun, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Sat, 11 Jul, arriving in Appleton.Price includes taxes and charges.From $622, select.
San Diego.$624 per passenger.Departing Tue, 30 Jun, returning Sun, 2 Aug.Return flight with United.Outbound indirect flight with United, departs from Appleton on Tue, 30 Jun, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Sun, 2 Aug, arriving in Appleton.Price includes taxes and charges.From $624, select.
San Diego.$630 per passenger.Departing Fri, 24 Jul, returning Tue, 28 Jul.Return flight with United.Outbound indirect flight with United, departs from Appleton on Fri, 24 Jul, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Tue, 28 Jul, arriving in Appleton.Price includes taxes and charges.From $630, select.
San Diego.$672 per passenger.Departing Thu, 30 Apr, returning Mon, 4 May.Return flight with United.Outbound indirect flight with United, departs from Appleton on Thu, 30 Apr, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Mon, 4 May, arriving in Appleton.Price includes taxes and charges.From $672, select.
San Diego.$759 per passenger.Departing Thu, 23 Apr, returning Mon, 27 Apr.Return flight with United.Outbound indirect flight with United, departs from Appleton on Thu, 23 Apr, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Mon, 27 Apr, arriving in Appleton.Price includes taxes and charges.From $759, select.
San Diego.$827 per passenger.Departing Wed, 10 Jun, returning Sun, 14 Jun.Return flight with United.Outbound indirect flight with United, departs from Appleton on Wed, 10 Jun, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Sun, 14 Jun, arriving in Appleton.Price includes taxes and charges.From $827, select.
San Diego.$1,031 per passenger.Departing Wed, 23 Dec, returning Sat, 2 Jan.Return flight with Delta.Outbound indirect flight with Delta, departs from Appleton on Wed, 23 Dec, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Sat, 2 Jan, arriving in Appleton.Price includes taxes and charges.From $1,031, select.
San Diego.$1,117 per passenger.Departing Wed, 23 Dec, returning Wed, 30 Dec.Return flight with Delta.Outbound indirect flight with Delta, departs from Appleton on Wed, 23 Dec, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Wed, 30 Dec, arriving in Appleton.Price includes taxes and charges.From $1,117, select.
San Diego.$1,420 per passenger.Departing Thu, 15 Oct, returning Sun, 18 Oct.Return flight with Delta.Outbound indirect flight with Delta, departs from Appleton on Thu, 15 Oct, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Sun, 18 Oct, arriving in Appleton.Price includes taxes and charges.From $1,420, select.

Find the cheapest month to fly from Appleton to San Diego

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Appleton to San Diego flights are currently cheapest in September.
Apr
from $759
May
from $584
Jun
from $827
Jul
from $630
Aug
from $582
Sep
from $563
Oct
from $1,420
Nov
Find prices
Dec
from $1,117
Jan
from $617
Feb
Find prices
Mar
Find prices

Alternative Appleton to San Diego routes

Looking for the cheapest, fastest or easiest route from Appleton to San Diego? You could fly into the following airports instead.

San Diego International

4km from central San Diego
ClosestCheapest
from $563
Search flights

McClellan-Palomar

48km from central San Diego
from $1,849
Search flights

Appleton to San Diego: Flight information

The things to know before you go.
Cheapest flight found$563
Cheapest month to flySeptember

Finding cheap flights from Appleton to San Diego: Frequently asked questions

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from Appleton to San Diego is $563. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
Currently, there are no airlines that fly direct from Appleton to San Diego. But we found flights with one or more stops from $563.
As of April 2026, there are no flights flying from Appleton to San Diego.
The cheapest month to fly from Appleton to San Diego is usually September.
If you're flying from Appleton Airport, the cheapest airport near San Diego is San Diego International – which is 4.1 km away from the centre of San Diego. We've found flights into this airport from $563.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Appleton Airport to San Diego on Wednesday, 16 September 2026.
No airlines currently offer direct flights between Appleton Airport and San Diego. Most routes have one or more stops.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
In April, the average temperature is usually around 16°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
Currently, United offers the cheapest flight tickets to San Diego.

Flying from Appleton International Airport (ATW) to San Diego: what you need to know

  • Appleton International Airport is located in Appleton. Based in the UTC-7 timezone, San Diego is two hours behind Appleton.

  • Give yourself plenty of time to make your ATW to San Diego flight. As a general rule, arrive at least two hours before international departures and an hour ahead for domestic flights.

  • Heading off during a peak period like a bank holiday? Expect longer lines at check-in and security. To be on the safe side, arrive up to four hours before international flights and two hours ahead of domestic departures.

  • ATW is about 8 kilometres from central Appleton. If you're catching a cab, ride-sharing or driving from the centre, it'll take you 15 minutes or so to get there, depending on traffic conditions.

  • Catching an early flight from Appleton International Airport to San Diego? Avoid the last-minute rush to the airport (and catch some extra z's) by choosing one of these hotels close to ATW:

  • 69.93% of flights that take off from Appleton International Airport land at their destination on schedule.

  • ATW is located at West 6390, Challenger Drive, Suite 201.

How to find the cheapest flights from Appleton International Airport (ATW) to San Diego

  • The lowest price we've found for a one-way Appleton International Airport to San Diego flight is $344. The cheapest price for a return flight is $563. Keep in mind fares can change due to demand at the time of booking.

  • Don't leave everything to the last moment. You're more likely to pick up cheap flights from ATW to San Diego if you book in advance. Airlines often offer some excellent early bird discounts.

  • The 'Whole month' search tool will show you the cheapest tickets from Appleton International Airport to San Diego throughout the month. It's a good way to find a bargain if your plans aren't set in stone.

  • Finding a cheap flight from ATW to San Diego is a breeze with Price Alerts. All you need to do is set up one of these automatic notifications and we'll notify you when the price has dropped.

  • Choose your ideal departure and arrival times, number of stops and airlines with our filters. Then, sort the results for your flight from Appleton International Airport to San Diego by 'Fastest,' 'Best' or 'Cheapest.'

Airports in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) is around 5 kilometres from the centre of San Diego. If you're getting a cab or a ride-share, the drive takes about 10 minutes.

  • It takes around 20 minutes to get there using public transport.

  • Book a hotel near SAN if you're coming in on a late flight from Appleton International Airport to San Diego. Choose one of these accommodation options and make your first night all about catching up on rest:

  • Go where the road takes you with a San Diego International Airport rental car. Pick up your wheels from Thrifty, Dollar or Budget and venture far and wide through San Diego and beyond.

  • Booking your ride from San Diego International Airport around two weeks ahead of your flight from ATW to San Diego can help you get the best possible rate.

  • SAN is located at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • Once your flight from Appleton International Airport to San Diego has arrived, you can make your way to the city centre in around 40 minutes by car. Central San Diego is roughly 56 kilometres from McClellan-Palomar Airport (CLD).

  • If you choose to travel on public transport, you'll get to the city centre in 2 hours 15 minutes or so.

  • Following your ATW to San Diego flight, rest your head at a hotel near CLD. These are some comfortable accommodation options that'll help you get into relaxation mode:

  • Budget, Hertz and Avis make collecting a McClellan-Palomar Airport rental car simple. These companies are located in or around the terminal and will have you on the road before long.

  • Avoid filling out forms at the rental desk by having everything prearranged. Reserve your ride from CLD a few weeks in advance so you can simply grab the keys and go.

Best time to go to San Diego

  • Before securing your flights from Appleton International Airport to San Diego, consider which time of year works best for you. High season in San Diego offers a lively atmosphere and plenty to do, while the low season means you'll get cheaper deals on hotels and smaller crowds.

  • Book an Appleton International Airport to San Diego flight ticket with a departure in August if you're eager to experience the city during its warmest month. Expect temperatures to range from 17ºC to 28ºC.

  • If you'd rather travel in cooler conditions, look for a cheap ticket from ATW to San Diego in February when temperatures average between 7ºC and 23ºC.

More about San Diego

Explore more of United States

  • You've seen San Diego, now it's time to discover other corners of United States. Journey about 177 kilometres north-west to Los Angeles to check off its must-visit sights. From Griffith Observatory to The Broad and La Brea Tar Pits & Museum, there's plenty to keep you on the go.

  • Around 483 kilometres east of San Diego, Phoenix is another essential stop in United States. Experience the best of this destination with a visit to Desert Botanical Garden, Heard Museum and Papago Park.

More travel options

Plan the rest of your trip from Appleton to San Diego

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.