$115 Cheap Flights from Dayton (DAY) to San Diego (SAN)

View $115 flight on Wed, May 28, 2025Opens in a new window

Popular airlines from Dayton Intl. Airport (DAY) to San Diego Intl. Airport (SAN)

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Find available prices by choosing your travel dates.

Cheap Flights from Dayton to San Diego (DAY-SAN)

Prices were available within the past 7 days and start at $115 for one-way flights and $232 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

American Airlines
Sun, May 25 - Thu, May 29
DAY
Dayton
SAN
San Diego
$232 Roundtrip, found 15 hours ago
$232
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Sun, May 25 from Dayton to San Diego, returning Thu, May 29, priced at $232 found 15 hours ago
Delta
Sat, May 24 - Sat, May 31
DAY
Dayton
SAN
San Diego
$257 Roundtrip, found 20 hours ago
$257
Roundtrip
found 20 hours ago
Select Delta flight, departing Sat, May 24 from Dayton to San Diego, returning Sat, May 31, priced at $257 found 20 hours ago
American Airlines
Wed, May 28 - Wed, Jun 4
DAY
Dayton
SAN
San Diego
$259 Roundtrip, found 7 hours ago
$259
Roundtrip
found 7 hours ago
Select American Airlines flight, departing Wed, May 28 from Dayton to San Diego, returning Wed, Jun 4, priced at $259 found 7 hours ago
United
Fri, Jul 4 - Sat, Jul 12
DAY
Dayton
SAN
San Diego
$264 Roundtrip, found 15 hours ago
$264
Roundtrip
found 15 hours ago
Select United flight, departing Fri, Jul 4 from Dayton to San Diego, returning Sat, Jul 12, priced at $264 found 15 hours ago
United
Sat, May 24 - Sat, May 31
DAY
Dayton
SAN
San Diego
$269 Roundtrip, found 20 hours ago
$269
Roundtrip
found 20 hours ago
Select United flight, departing Sat, May 24 from Dayton to San Diego, returning Sat, May 31, priced at $269 found 20 hours ago
United
Sat, May 24 - Sat, May 31
DAY
Dayton
SAN
San Diego
$274 Roundtrip, found 20 hours ago
$274
Roundtrip
found 20 hours ago
Select United flight, departing Sat, May 24 from Dayton to San Diego, returning Sat, May 31, priced at $274 found 20 hours ago
United
Sat, May 24 - Sun, May 25
DAY
Dayton
SAN
San Diego
$275 Roundtrip, found 16 hours ago
$275
Roundtrip
found 16 hours ago
Select United flight, departing Sat, May 24 from Dayton to San Diego, returning Sun, May 25, priced at $275 found 16 hours ago
Delta
Sat, May 24 - Fri, May 30
DAY
Dayton
SAN
San Diego
$277 Roundtrip, found 5 hours ago
$277
Roundtrip
found 5 hours ago
Select Delta flight, departing Sat, May 24 from Dayton to San Diego, returning Fri, May 30, priced at $277 found 5 hours ago
American Airlines
Sun, May 25 - Thu, May 29
DAY
Dayton
SAN
San Diego
$278 Roundtrip, found 15 hours ago
$278
Roundtrip
found 15 hours ago
Select American Airlines flight, departing Sun, May 25 from Dayton to San Diego, returning Thu, May 29, priced at $278 found 15 hours ago
Alaska Airlines
Wed, May 28 - Tue, Jun 3
DAY
Dayton
SAN
San Diego
$384 Roundtrip, found 1 day ago
$384
Roundtrip
found 1 day ago
Select Alaska Airlines flight, departing Wed, May 28 from Dayton to San Diego, returning Tue, Jun 3, priced at $384 found 1 day ago
Flights from Dayton (DAY) to San Diego (SAN)
Origin airport
James M. Cox Dayton Intl.
Destination airport
San Diego Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, United
Roundtrip price
$232
Distance
1889 mi

Dayton to San Diego Flights

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

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

Sunday is one of the best days to book for cheap flights from Dayton 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 Dayton 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 Dayton to San Diego in 2025. You can also book with separate airlines for your outbound and return journeys, from $115 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 Dayton 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 Dayton 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.

Frequently asked questions

How much does a flight from James M. Cox Dayton Intl. Airport (DAY) to San Diego Intl. Airport (SAN) cost?
Discover the latest flight deals from DAY to SAN by entering your preferred travel dates and searching on Expedia. Easily compare prices by departure date if you have flexibility with your schedule and use handy filters to explore prices for your preferred journey. As a member of One Key™, our free loyalty program, you can use Price Tracking to watch fares and receive notifications if prices go up or down.
What is the cheapest month to fly from DAY to SAN?
The cheapest flights from DAY to SAN are usually during off-peak season, when demand is lower. To save money, avoid flying during public holidays, school breaks and major local events.
What is the cheapest airline that flies from DAY to SAN?
Use the filter tool on Expedia to compare airlines and find the cheapest carrier that’ll take you from DAY to SAN. Sort your results by “Price (lowest to highest)” to snap up a great deal.
How many flights per day from James M. Cox Dayton Intl. Airport (DAY) to San Diego Intl. Airport (SAN)?
There aren’t any daily nonstop flights departing from James M. Cox Dayton Intl. Airport (DAY) to San Diego Intl. Airport (SAN). But you can book flights with layovers. Filter your search results on Expedia to include one or two stops, and you’ll be on your way in no time at all.
What day of the week has the most flights from DAY to SAN?
Friday is generally the busiest day for flights, while Tuesday tends to be the quietest.* Remember that flight schedules can vary depending on a range of factors, including the airline 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 James M. Cox Dayton Intl. Airport (DAY) to San Diego Intl. Airport (SAN)?
Choose a flight from James M. Cox Dayton Intl. Airport (DAY) to San Diego Intl. Airport (SAN) that leaves before 3 PM to reduce the likelihood of delays. Later departures are on average 22% more likely to be 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 James M. Cox Dayton Intl. Airport (DAY) to San Diego Intl. Airport (SAN) last-minute?
Booking your ticket from DAY to SAN shortly before your getaway is usually more expensive. But if you’re flexible with your schedule, you could bag a cheap last-minute fare.
Is it cheaper to book a DAY to SAN flight and hotel package?
Compared with arranging flights and hotels separately, booking a DAY to SAN flight and hotel package with Expedia could result in significant savings. What’s more, managing everything in one place will take the stress out of travel planning. Simply secure your flights and choose from our extensive range of hotels, then customize your trip with extras like activities, tours and car rentals.
Can I cancel or change the date of my flight from James M. Cox Dayton Intl. Airport (DAY) to San Diego Intl. Airport (SAN)?
Typically, it’s possible to reschedule or cancel your DAY to SAN flight. However, for bookings made more than 24 hours ago, additional fees may apply. Check your airline’s policies in your itinerary to see what changes are possible and whether any costs are involved. You’ll also find more information on our Customer Service portal.

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*Available to One Key members.