Cheap Flights from Carbondale (MDH) to San Diego (SAN)

Popular airlines from Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN)

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Frequently asked questions

How much does a flight from Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN) cost?
Get a cheap one-way flight or cheap return flight from Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN) with Expedia. Enter your travel dates and sort by "Price (lowest to highest)" to find our cheapest flight offers on this route.
What is the cheapest month to fly from Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN)?
is the least expensive month to fly from MDH to SAN. Traveling during quieter months is often the key to landing a great deal.
What is the cheapest airline that flies from Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN)?
Use the filters on Expedia to compare different airlines and find the cheapest carrier that'll fly you from MDH to SAN. Then, sort your results by "Price (lowest to highest)" to pick up a good deal.
How many flights per day from Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN)?
You'll need to book a flight with a layover when traveling from Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN). There are no daily direct flights on this route. However, simply filter your search to include one or more stops to find an option that works for you.
What day of the week has the most flights from MDH to SAN?
Friday is typically the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can change depending on a number of factors, including the carrier and season.*Busiest/quietest day to travel is based on Expedia flight demand through January to December 2024.
What is the best time to fly from Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN)?
Choose a flight from Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN) that takes off before 3 PM to reduce the likelihood of delays and cancellations. Departures later than this have a 22% higher chance of being canceled, on average.**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 Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN) last-minute?
Booking your ticket from MDH to SAN shortly before your trip is typically more expensive. But if there's some wiggle room with your departure dates and times, you could snag a cheap last-minute fare.
Is it cheaper to book a MDH to SAN flight and hotel package?
Compared with arranging flights and hotels separately, booking a MDH to SAN flight and hotel package with Expedia could lead to significant savings. Better still, having everything in one easy place will take the stress out of planning your trip. Simply pick your flights and select from our wide range of hotels, then tailor your trip with other add-ons like activities, tours and car rentals.
Can I cancel or change the date of my flight from Carbondale, IL (MDH-Southern Illinois) to San Diego Intl. Airport (SAN)?
If you booked your MDH to SAN flight within the last 24 hours, you may be able to modify or cancel it without fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond that time. Airline policies and contact information can be found in your itinerary or confirmation email. Or, go to our Customer Service portal if you want more information.

Travel information

Origin airport
Southern Illinois
Destination airport
San Diego Intl.
Distance
1608 mi

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Carbondale to San Diego Flights

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

 

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

Sunday is one of the best days to book for cheap flights from Carbondale 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 Carbondale 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 Carbondale to San Diego in 2026. 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 Carbondale 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 Carbondale 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.

 

Carbondale to San Diego Flights

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