Cheap Flights to San Diego, TX

Popular airlines to San Diego

Tips to find the cheapest flights to San Diego

The cheapest day to fly

Get started finding a cheap flight to San Diego on Expedia by either choosing a deal on this page or entering into the search bar your travel dates, origin airport, and whether you want roundtrip or one-way airfare. You can filter for flexibility, number of stops, airline, and departure/arrival times to find the best flight for you.

The cheapest month to fly

is the cheapest month to fly to San Diego. This coincides with the low season when fewer people travel. Whichever month you travel in, though, be sure to book at least a month in advance if you want to score cheap tickets to San Diego. ARC's data shows that domestic flights booked 28 days or more before departure are typically 24% cheaper than those booked last minute.

The most affordable time to book a flight

Typically, a Sunday can be the cheapest time to book a flight to San Diego, according to ARC’s data. On average, you could save between 6% and 13% by booking on a Sunday instead of a Friday, which is the most expensive day to make a reservation.

The cheapest round-trip tickets to San Diego

The lowest price for round-trip flights to San Diego in 2025 starts from , while one-way tickets start from . Expedia's effective search tool is one of the best ways to find a budget airfare. Simply enter your dates, and within seconds, it'll show you a vast selection of the cheapest flights to San Diego. If you have a preferred departure time or airline, you can use the handy filters to customize your search.

The cheapest airlines flying to San Diego

are just some of the airlines that can typically offer cheap tickets to San Diego. You can find their most affordable flights by using the “airline” search filter and then sorting prices from low to high. As a trusted partner of the world's leading airlines, Expedia offers you some of the best airfare deals to San Diego and countless more destinations worldwide.

The most affordable airports to fly into

To view the cheapest airports to fly into for San Diego, simply order your search results from lowest to highest price. Expedia's search tool compares flight prices for all airports close to your destination, so you don't have to manually search them one by one to find the cheapest flight to San Diego. If you have a preferred place to fly into, take advantage of the “arrival airport” filter to narrow down your search on Expedia.

Save with a package

With Expedia's amazing package deals, you could save hundreds of dollars by booking your San Diego plane tickets together with your accommodations, car rental, or activities. Just select the search wizard's “package” option to view some of the cheapest deals. Look out for the green savings label to see how much you're saving.

Date flexibility for the cheapest flights to San Diego

If you can be flexible with your travel dates, it's a good idea to broaden your search by comparing prices on different days. This will open up more options, meaning you could uncover a less expensive flight to San Diego.

Stopover savings

The cheapest tickets to San Diego are sometimes those with a stopover. Book one of these flights, and you'll change planes at an airport en route to San Diego. While the overall travel time might be longer than a non-stop flight, you may decide it's worth it for the money saved.

Get Expedia's Price Drop Protection

Price Drop Protection means that if your flight gets cheaper after booking, you'll be credited the difference*. This gives you peace of mind that you're getting one of the cheapest flights to San Diego for your chosen departure. Expedia's Price Drop Protection is available for a small fee but is free to One Key Gold and Platinum tier members.

*Terms apply.

Use our Price Tracking feature

Expedia's Price Tracking feature is another great tool that removes the guesswork from finding cheap flights to San Diego. Simply download the free Expedia app to your smart device and activate San Diego flight price alerts for your travel dates. There's even a price predictor tool that uses historical data to indicate the best time to book, giving you peace of mind that you'll nab the lowest prices.

Book with Expedia

As well as Price Drop Protection and Price Tracking, Expedia's close partnership with a vast selection of the world's leading airlines means you're sure to find cheap flights to San Diego. Plus, the One Key rewards program lets you earn real cash rewards on most bookings that you can use to save money on future trips. Best of all, it's free to join, and members often unlock exclusive discounts, too.

Disclaimer: ARC The statistics are based on average round-trip ticket prices between January and August 2023. The percentages you see are averages.

Frequently asked questions

What month is the cheapest to fly to San Diego?
Schedule your trip for if you want to get a deal on your fare. It's the cheapest month to fly to San Diego. If possible, avoid traveling during busy periods such as major public holidays or events.
Which US cities have the cheapest flights to San Diego?
You're more likely to find cheap flights to San Diego if you jet out of Houston. Remember that time of year and demand can all influence how much you pay, so book as soon as possible when you spot a great deal.
Which US cities fly direct to San Diego?
Nonstop flights to San Diego take off from US cities like Houston and Dallas. When organizing your getaway, simply choose the "Direct flights only" checkbox to discover options that fly to San Diego without a stopover.
How to find a cheap flight to San Diego?
To find cheap flights to San Diego, book ahead of time and consider traveling during the low season. Want a handy tip? Fly on a Thursday and you'll save 16% on average compared to those who travel on a Sunday.* Sign up for price tracking on the Expedia app and we'll notify you if your fares drop.*Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
How to get a cheap last-minute flight to San Diego?
While booking in advance is typically the easiest way to save money, don't panic if your San Diego trip is last minute. You can still find cheap flights to San Diego, especially if your plans have some flexibility. Try changing your trip dates, looking at different ticket options or departing from another hub.
How far in advance should I book a flight to San Diego?
Book your flight to San Diego two to four months ahead if you're jetting in from an international destination. For domestic travel, the general guideline is 28 days in advance. Bigger savings and a wider variety of travel dates, schedules and seating options are just some of the advantages of booking early.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which day of the week is the cheapest day to buy a plane ticket to San Diego?
You can usually find cheap flights to San Diego on Sundays. Travelers can save around 8% on average compared to those who book on a Friday, which is often the most expensive day to book.**Best day of the week to book, depart and ideal booking window recommendations based on average round-trip ticket prices for January through August 2023, sourced from Airline Reporting Corporation's (ARC) global airline sales database. Percentages noted are averages.
Which airlines fly to San Diego?
There are 2 carriers connecting San Diego with 2 airports worldwide. The primary entry point to San Diego is Corpus Christi Intl. Airport (CRP). American Airlines and United Airlines are two major airlines to San Diego.
Where do you fly into San Diego?
Corpus Christi Intl. Airport (CRP) is the main airport for passengers flying to San Diego. Or you could land at Alice, TX (ALI). Compare fares between the two airports to find the cheapest or easiest way to fly to San Diego.
How far is the airport from central San Diego?
If you're jetting into Corpus Christi Intl. Airport (CRP), you'll be roughly 45 mi east of the center of San Diego.
Can I save money by booking a San Diego trip package?
Book a San Diego flight and hotel package deal on Expedia, and you can benefit from significant savings. It's simple to bundle your accommodations and flights, and you can even add car rentals and activities to create your own customized San Diego vacation. Plus, there's nothing like the convenience of booking everything in the same place.
Can I change or cancel my flight to San Diego?
You can often change or cancel your flight to San Diego within 24 hours of booking. However, keep in mind that some flights are non-refundable. In those cases, you may be issued credit for future flights in place of a direct refund. Remember to check the airline's terms of service in your itinerary for specific details. Use Expedia's "No cancel fee" or "Changes included" filters during your search to find cheap flights to San Diego with flexible change policies. To learn more, visit our Customer Service Portal.
Flights to San Diego information
Destination airport
San Diego
Destination airport IATA code
ALI

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*Available to One Key members.