$648 Cheap flights to San Diego
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight to San Diego departing on 21/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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San Diego flights insights and trends
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What is the cheapest month to fly to San Diego?
The month of May is, on average, the cheapest month to fly to San Diego from Australia, with most prices found around $1,583. If you’re not able to fly to San Diego in May, then March is your next best option. Flight prices from Australia to San Diego during March average around $1,627.
What is the cheapest day to depart on your flight to San Diego?
On average, the least expensive day to fly to San Diego from Australia is on a Monday. momondo users have found tickets for Monday departures for as low as $1,725. However, this price may fluctuate depending on the airline, the season, and holidays. On the other hand, Saturday is the most expensive day to depart from Australia because it is more convenient for both business and leisure travellers. As a result, prices tend to be around $2,150.
What is the cheapest time of day to depart on your flight to San Diego?
Our data shows that the cheapest Australia to San Diego flights are usually those with departure times in the evening. Our users have found flights to San Diego in the evening for as low as $1,672. Try not to purchase tickets at midday because they tend to be around $2,584. Of course, these prices can vary depending on the time of year and what airport you fly to.
How far in advance should I book a flight to San Diego?
You are more likely to see cheaper flights to San Diego from Australia when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $1,815 when searching weeks before you fly. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from Australia for as low as $1,532 on momondo.
Cheapest flights to San Diego
Find the cheapest flights to San Diego from your nearest city or airport
| CHEAPEST MONTH TO FLY TO SAN DIEGO FROM SYDNEY | May | 13% cheaper | Flying from Sydney to San Diego costs on average just $1,583 in May |
| MOST EXPENSIVE MONTH TO FLY TO SAN DIEGO FROM SYDNEY | December | 32% more expensive | It costs about $2,412 for flights to San Diego from Sydney in December |
| MOST POPULAR MONTH TO FLY TO SAN DIEGO FROM SYDNEY | July | 352% more users visited | More momondo users searched in flights to San Diego from Sydney in July than any other month |
Cheap San Diego flight deals and tips
Summary info about San Diego flight prices, duration and airlines
Best One-Way Price | $648 |
|---|---|
Best Round-Trip Price | $1,000 |
Fastest flight time | 17h 10m |
Popular in | December |
Frequently asked questions about flying to San Diego
How far in advance should I book a flight to San Diego?
You are more likely to see cheaper flights to San Diego from Australia when booking 32 days ahead of your departure date. In general, you can expect to find flights to San Diego for around $1,815 when searching 32 days out.
Is there an alternative airport near San Diego?
Finding an alternative and possibly cheaper destination airport near San Diego is possible. If you are planning a flight to San Diego, consider booking flights to San Diego Carlsbad-Palomar Airport (47 km from San Diego city centre), Santa Ana J. Wayne/Orange Cnty Airport (126 km from San Diego city centre), Palm Springs Airport (138 km from San Diego city centre), Long Beach Municipal Airport (153 km from San Diego city centre) or Ontario Airport (155 km from San Diego city centre).
Is there a cheaper alternative to flying into San Diego?
Ontario Airport has an average price of $388 per person and is typically the cheapest airport to fly into when visiting San Diego. This average price does vary based on departure city. Try momondo’s Airport-to-Airport Pricing Tool to find the cheapest flight.
What is the absolute cheapest flight to San Diego?
Users booking trips to San Diego from Honolulu found flights 5% cheaper than the average price of flights to San Diego. To find the cheapest price to San Diego from your area, use momondo’s Airport-to-Airport Pricing Tool.
When did momondo last update prices for flights to San Diego Airport?
Prices for flights to San Diego Airport are refreshed on a daily basis.
How many operators does momondo search for flights to San Diego Airport?
As of July 2025, there are 6 operators available to choose from for flights to San Diego Airport.
How old do you have to be to fly to San Diego Airport?
The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and stopovers. It is recommended that you verify with the airline you are booking with for travel to San Diego Airport.
What documentation or ID do you need to fly to San Diego Airport?
The necessary travel and health documents for your San Diego Airport trip may vary depending on your travel plans and individual circumstances. Generally, you should have various documents, such as a national ID card or driver's licence and a passport that is valid for six months beyond your scheduled arrival date. We recommend seeking advice from your airline or a trusted third party, such as IATA.
Travelling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal to San Diego?
It is quick and easy to find flights to San Diego on momondo. We search and return numerous flight options from various airlines and agents. You can then use our filters to narrow your search until you have found the most convenient flight to San Diego that suits you.
Can I find flights to San Diego with flexible booking policies on momondo?
Yes. momondo enables you to select and highlight flights to San Diego with this policy.
How can momondo help me find flights to San Diego?
Once all potential San Diego flight options are in front of you momondo lets you sort and filter flights based on preferences such as airline, price and flight times, amongst many other options.
I’m not ready to book a flight to San Diego right now. Can momondo alert me if prices change?
If you are not ready to book a flight to San Diego now, use our insights above to find helpful tips or alternatively set up a price alert; this is where momondo will track prices on flights to San Diego and let you know when they change.