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

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

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Frequently asked questions

How much does a flight from San Diego Intl. Airport (SAN) to MidAmerica-St. Louis Airport (BLV) cost?
Grab a cheap one-way flight or cheap return flight from San Diego Intl. Airport (SAN) to MidAmerica-St. Louis Airport (BLV) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight deals on this route.
What is the cheapest month to fly from San Diego Intl. Airport (SAN) to MidAmerica-St. Louis Airport (BLV)?
Traveling in may help you find better deals, as it's the cheapest month for flights between SAN and BLV. You'll usually find the lowest fares during the off-season.
What is the cheapest airline that flies from San Diego Intl. Airport (SAN) to MidAmerica-St. Louis Airport (BLV)?
Use the filter tool on Expedia to compare different airlines and find the cheapest carrier that'll take you from SAN to BLV. Then, sort your results by "Price (lowest to highest)" to score a good deal.
How many flights per day from San Diego Intl. Airport (SAN) to MidAmerica-St. Louis Airport (BLV)?
There are no daily nonstop flights available from San Diego Intl. Airport (SAN) to MidAmerica-St. Louis Airport (BLV). But you can book flights with layovers. Filter your search results on Expedia to include one or more stops, and you'll be soaring above the clouds in no time.
What day of the week has the most flights from SAN to BLV?
You'll typically find Tuesday the quietest day for flights, while Fridays tend to be the busiest.* However this can change 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 San Diego Intl. Airport (SAN) to MidAmerica-St. Louis Airport (BLV)?
To arrive at MidAmerica-St. Louis Airport (BLV) without delays, choose a flight that leaves San Diego Intl. Airport (SAN) before 3 PM. The likelihood of cancellations is 22% higher, on average, for departures after this time.**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 San Diego Intl. Airport (SAN) to MidAmerica-St. Louis Airport (BLV) last-minute?
Booking your flight from SAN to BLV shortly before your journey is usually more expensive. But if you're flexible with your travel dates and times, you could bag a cheap last-minute fare.
Can I cancel or change the date of my flight from San Diego Intl. Airport (SAN) to MidAmerica-St. Louis Airport (BLV)?
If you booked your SAN to BLV flight within the last 24 hours, you may be able to cancel or modify it without any fees. Depending on the airline and the ticket type you purchased, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal for further details.

Travel information

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

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San Diego to Belleville Flights

The cheapest times to fly from San Diego to Belleville

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 San Diego to Belleville are during the month of . You can find some of the cheapest flights from San Diego to Belleville with Expedia's search tool and vast selection of airlines.

 

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

Sunday is one of the best days to book for cheap flights from San Diego to Belleville: 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 San Diego to Belleville

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 San Diego to Belleville 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 San Diego to Belleville 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 San Diego to Belleville 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.

 

San Diego to Belleville Flights

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*Available to One Key members.