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270 € Cheap Flights from Appleton to San Diego

Compare Appleton to San Diego flight deals

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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 315 €. Find the lowest prices on one-way and return tickets right here.
San Diego.270 € per passenger.Departing Tue, 29 Sep, returning Tue, 6 Oct.Return flight with United.Outbound indirect flight with United, departs from Appleton on Tue, 29 Sep, arriving in San Diego International.Inbound indirect flight with United, departs from San Diego International on Tue, 6 Oct, arriving in Appleton.Price includes taxes and charges.From 270 €, select.
San Diego.277 € per passenger.Departing Thu, 17 Sep, returning Wed, 23 Sep.Return flight with Allegiant Air and Frontier Airlines.Outbound indirect flight with Allegiant Air, departs from Appleton on Thu, 17 Sep, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Wed, 23 Sep, arriving in Appleton.Price includes taxes and charges.From 277 €, select.
San Diego.308 € per passenger.Departing Thu, 13 Aug, returning Thu, 20 Aug.Return flight with Allegiant Air and Frontier Airlines.Outbound indirect flight with Allegiant Air, departs from Appleton on Thu, 13 Aug, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Thu, 20 Aug, arriving in Appleton.Price includes taxes and charges.From 308 €, select.
San Diego.315 € per passenger.Departing Fri, 24 Jul, returning Thu, 30 Jul.Return flight with Allegiant Air and Frontier Airlines.Outbound indirect flight with Allegiant Air, departs from Appleton on Fri, 24 Jul, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departs from San Diego International on Thu, 30 Jul, arriving in Appleton.Price includes taxes and charges.From 315 €, select.
San Diego.339 € per passenger.Departing Wed, 24 Mar, returning Wed, 31 Mar.Return flight with Delta.Outbound indirect flight with Delta, departs from Appleton on Wed, 24 Mar, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Wed, 31 Mar, arriving in Appleton.Price includes taxes and charges.From 339 €, select.
San Diego.363 € per passenger.Departing Tue, 23 Jun, returning Sat, 27 Jun.Return flight with Delta.Outbound indirect flight with Delta, departs from Appleton on Tue, 23 Jun, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Sat, 27 Jun, arriving in Appleton.Price includes taxes and charges.From 363 €, select.
San Diego.588 € per passenger.Departing Sun, 28 Mar, returning Sat, 3 Apr.Return flight with Delta.Outbound indirect flight with Delta, departs from Appleton on Sun, 28 Mar, arriving in San Diego International.Inbound indirect flight with Delta, departs from San Diego International on Sat, 3 Apr, arriving in Appleton.Price includes taxes and charges.From 588 €, 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.
Jun
from 363 €
Jul
from 315 €
Aug
from 308 €
Sep
from 277 €
Oct
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Nov
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Dec
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Jan
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Feb
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Mar
from 339 €
Apr
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May
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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 270 €
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McClellan-Palomar

48km from central San Diego
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Appleton to San Diego: Flight information

The things to know before you go.
Cheapest flight found270 €
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 270 €. 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 270 €.
As of June 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 270 €.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Appleton Airport to San Diego on Tuesday, 29 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 June, the average temperature is usually around 19°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.

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

  • San Diego is two hours behind Appleton, where Appleton International Airport is located. San Diego runs on the UTC-8 timezone.

  • For a relaxed start to your ATW to San Diego flight, leave enough time for things like check-in and baggage drop. Turning up two hours ahead of international departures and one hour before domestic flights is the general travel rule.

  • Flying during a popular month like March? Public holidays and other high seasons can mean longer lines at security. Play it safe and arrive up to four hours before international flights and two hours before a domestic departure.

  • The journey from central Appleton to ATW takes about 45 minutes by public transport. If you drive, ride-share or get a taxi, you'll cover the 8 kilometres in 15 minutes or so, depending on traffic.

  • Want a stress-free start to your journey? Stay near ATW. Whether you're boarding an early flight from Appleton International Airport to San Diego or want to avoid feeling rushed, these hotels are worth a look:

  • Of the departures from Appleton International Airport, 70% touch down on time at their destination.

  • ATW's address is West 6390, Challenger Drive, Suite 201.

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

  • 148 € is the cheapest price we've seen for a one-way Appleton International Airport to San Diego flight. A round-trip ticket right now is 270 €. Depending on the availability when you book, these fares could change.

  • To find cheap flights from ATW to San Diego, book ahead. Airlines typically offer lower prices when tickets first go on sale.

  • Finding cheap tickets from Appleton International Airport to San Diego is easier if you can be flexible with your trip dates. Use the 'Whole month' search tool to access the lowest prices across the month and snap up an awesome deal.

  • Finding a cheap flight from ATW to San Diego couldn't be easier with Price Alerts. All you need to do is create one of these automatic notifications and we'll notify you as soon as a deal gets even better.

  • Tailor your trip with filters. Select your preferred departure and arrival times, total journey duration and airlines. You can also sort your results by 'Best,' 'Cheapest' or 'Fastest' flights from Appleton International Airport to San Diego.

Airports in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) to the centre of San Diego takes around 15 minutes to reach by car. The centre is roughly 5 kilometres away.

  • When travelling by public transport, expect a journey time of around 25 minutes.

  • The last thing you need is a long journey to your hotel if you're arriving on a late flight from Appleton International Airport to San Diego. Check in to one of these accommodation options near SAN instead:

  • Lock in the best possible rate by booking your vehicle from San Diego International Airport around two weeks ahead of your flight from ATW to San Diego.

  • The street address for SAN is N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • McClellan-Palomar Airport (CLD) is roughly 48 kilometres from central San Diego. Check out your options for getting into town after your flight from Appleton International Airport to San Diego has landed.

  • There are some great places to park your luggage (and yourself) near CLD. Kick back and get cosy after your ATW to San Diego flight at any of these well-located options:

  • Typically, the sooner you book, the better the prices and selection of vehicles. Reserve your ride from CLD once you know your travel dates.

Best time to go to San Diego

  • It's time to plan your trip dates for your flight from Appleton International Airport to San Diego. July is the most popular month to travel to San Diego. If you want a quieter vibe, go in December.

  • Lock in a Appleton International Airport to San Diego plane ticket with a departure in August if you want to experience the city during its warmest month. Expect temperatures to range from 16ºC (61ºF) to 27ºC (81ºF).

  • If you like cooler conditions, look for a cheap ticket from ATW to San Diego in February when temperatures average between 8ºC (46ºF) and 22ºC (72ºF).

More about San Diego

  • Start your San Diego trip right by choosing the ideal place to stay. Once you've booked your flight from Appleton International Airport to San Diego, browse our selection of accommodation options including:

  • There are so many things to discover in this city it can be hard to work out where to begin. San Diego Balboa Park, San Diego Zoo and USS Midway Museum are leading attractions which should feature on any well-planned San Diego itinerary.

Explore more of the United States

  • You've seen San Diego, now it's time to explore more of the United States. Journey around 177 kilometres northwest to Los Angeles to check off its leading sights. From Hollywood Sign to Universal Studios Hollywood and Hollywood Bowl, there's plenty to keep you busy.

  • Phoenix is another must-experience destination in the United States and is around 483 kilometres east of San Diego. No journey is complete without a visit to Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.

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 12 days.