Cheap Flights from Belleville (BLV) to San Diego (SAN)

Popular airlines from Belleville, IL (BLV-MidAmerica-St. Louis) to San Diego Intl. Airport (SAN)

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Frequently asked questions

How much does a flight from MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN) cost?
Grab a cheap one-way flight or cheap return flight from MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to see our cheapest flight deals on this route.
What is the cheapest month to fly from MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN)?
is the least expensive month to fly from BLV to SAN. Traveling during an off-peak travel window is often the key to scoring lower fares.
Which airlines fly direct from MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN)?
While Belleville, IL (BLV-MidAmerica-St. Louis) doesn't have any direct flights to San Diego Intl. Airport (SAN), other airports have nonstop routes. Departing from Lambert-St. Louis Intl. Airport (STL) will get you to San Diego without any layovers.
What is the cheapest airline that flies from MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN)?
Expedia's filter tool lets you easily compare airlines, flight times and fares all in one place. Select your preferences, then sort by "Price (lowest to highest)" to find the carrier with the cheapest BLV to SAN flight.
How many flights per day from MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN)?
Nonstop flights from MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN) aren't available daily, so you'll have to take a flight with a layover. Explore your options with Expedia's filters. Enter your travel dates and select either "1 Stop" or "2+ Stops."
What day of the week has the most flights from BLV to SAN?
You'll generally find Tuesday the quietest day for flights, while Fridays are often the busiest.* However this can vary from season to season and during peak travel times or public holidays.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN)?
To avoid possible delays on the MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN) route, aim to fly before 3 PM. Later departures have a 22% higher chance of being canceled.**Most reliable time of the day and month to travel recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
Is it cheaper to buy a plane ticket from MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN) last-minute?
Last-minute fares from BLV to SAN are usually more expensive. To lock in the cheapest rates, start searching for flights ahead of time. That being said, if you can play around with your travel dates, you may find a cheap fare just before your departure.
Is it cheaper to book a BLV to SAN flight and hotel package?
Compared with arranging flights and hotels separately, booking a BLV to SAN flight and hotel package with Expedia could result in significant savings. Better still, having everything in one convenient place will take the hassle out of travel planning. Just pick your flights and choose from our extensive range of hotels, then tailor your trip with other add-ons like tours, car rentals and activities.
Can I cancel or change the date of my flight from MidAmerica-St. Louis Airport (BLV) to San Diego Intl. Airport (SAN)?
In most cases, you're able to reschedule or cancel your BLV to SAN flight. However, there may be additional fees, especially if you made your booking more than 24 hours ago. Double-check your itinerary for the airline's fees and policies on flight changes, or if you need more details, go to our Customer Service portal.

Travel information

Travel information

Origin airport
MidAmerica-St. Louis
Destination airport
San Diego Intl.
Distance
1582 mi

Book with confidence

Book with confidence

Belleville to San Diego Flights

The cheapest times to fly from Belleville to San Diego

On average, Thursday can be the cheapest time to fly, according to data from the Airlines Reporting Corporation (ARC), one of the world's biggest databases for global airline sales. The data reveals that you could save up to 16% by flying on a Thursday—the cheapest day to travel on average—instead of a Sunday—the most expensive. Some of the most affordable flights from Belleville to San Diego are during the month of . You can find some of the cheapest flights from Belleville to San Diego with Expedia's search tool and vast selection of airlines.

 

The best time to book a flight from Belleville to San Diego

Sunday is one of the best days to book for cheap flights from Belleville to San Diego: Tickets reserved on a Sunday cost between 6% and 13% less than those reserved on a Friday, according to ARC data. The data also suggests booking early can also lead to cheaper airfares. You could save 24% by buying your tickets for domestic flights at least a month in advance and 10% by booking international flights 2 months in advance.

 

How to find cheap round-trip tickets from Belleville to San Diego

Being flexible with your dates and using Expedia's Price Drop Protection and Price Tracking features are some of the best ways of finding a cheap ticket from Belleville to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from one-way. Expedia also offers Price Drop Protection, so if the cost of your airfare goes down after booking, you'll receive a credit for the difference*. This is available for a small fee, and is free to One Key Gold and Platinum tier members.

 

Expedia's Price Tracking feature means you can stay on top of airfares without manually checking every day. It sends you automated price alerts for cheap Belleville to San Diego flights and uses historical data to indicate when the best time to book is. Download Expedia's free app to activate this handy tool in a few easy taps.

 

You could also save big by booking one of Expedia's vacation packages. Bundling together your Belleville to San Diego airfare with your accommodations and car rental is often cheaper than booking everything separately. There’s also One Key, Expedia's generous rewards program. Join for free and you could earn One Key cash on most bookings to save on future adventures.

 

*Terms apply.

 

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

 

Belleville to San Diego Flights

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*Available to One Key members.