$115 Frontier Airlines Cheap Flights from Chicago to San Diego

Find The Best Day To Fly from Chicago to San Diego

Amazing Frontier Airlines ORD to SAN Flight Deals

The cheapest flights to San Diego Intl. found within the past 7 days were $229 round trip and $115 one way. Prices and availability subject to change. Additional terms may apply.

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Frequently asked questions

Can I catch a flight from O'Hare Intl. Airport (ORD) to San Diego Intl. Airport (SAN) right now?
Make sure you go to the Covid-19 Travel Advisor to find out if there are any present quarantine requirements and travel advice reports in place in SAN when flying in from ORD.
What terminal is Frontier Airlines at ORD?
Your boarding pass should tell you which terminal your Frontier Airlines flight will be departing from at ORD. It might also be able to provide you with arrival details for San Diego Intl. Airport (SAN). If not, it’s probably a wise idea to consult your airline before you fly.
Are there Frontier Airlines non-stop flights from ORD to SAN?
Frontier Airlines doesn’t have direct flights between ORD and San Diego Intl. Airport (SAN), so prepare to make a stopover. If you have time to spare between flights, hit the airport shops while waiting for your connection.
How long is a Frontier Airlines flight from ORD to SAN?
As it will take around 5 hours and 33 minutes for your Frontier Airlines flight to head from ORD to SAN, consider throwing some entertaining travel games in your carry-on bag. You never know — the person next to you might appreciate a challenge to break up the journey.
How many direct and indirect flights does Frontier Airlines fly from ORD to SAN?
You’ll have a few options if you decide to fly from O’Hare Intl. Airport (ORD) to SAN with Frontier Airlines. The airline offers 17 services on this route each month.
If I am not able to travel due to COVID-19, can I change my booking to a later date?
For more info about changing your flight to SAN, please visit our Customer Service Portal.
What is the best day to buy a plane ticket?
This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.
What are the cheapest days to fly?
Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.
How far in advance can you book a flight?
Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.

Discover our best Frontier Airlines flight from Chicago ORD to San Diego SAN 

To find the best deals on flights to Chicago from San Diego with Frontier Airlines, just enter your travel dates, filter by Frontier Airlines, and hit search. You’ll find flights to choose from and can sort by price, flight duration, and arrival or departure time.  


Return flights from Chicago ORD to San Diego SAN with Frontier Airlines 

If you’re planning a round trip, booking return flights with Frontier Airlines is usually the most cost-effective option. With airfares ranging from $229 to $229, it’s easy to find a flight that suits your budget. Prices and availability subject to change. Additional terms may apply. 


Book one-way Frontier Airlines flights from Chicago ORD to San Diego SAN 

A one-way ticket gives you much greater flexibility—allowing you to choose your return date, destination, and time whenever you’re ready. By booking in advance you can find great deals on one-way tickets too. Right now, a one-way Frontier Airlines flight from Chicago to San Diego costs from $115. Prices and availability subject to change. Additional terms may apply. 


The easy way to find cheap flights to San Diego SAN from  Chicago ORD with Frontier Airlines 

To find a cheap Frontier Airlines flight from Chicago ORD to San Diego SAN, sort your search results by price or filter by budget. Thanks to Travelocity’s Price Match Promise, if you find a better airfare deal anywhere else within 24 hours, we’ll credit or refund the difference. 


How to find our best airfare deals on Frontier Airlines flights from Chicago ORD to San Diego SAN 

If you’re looking for cheap flights, it helps to be flexible when it comes to your travel dates. You’ll usually find lower cost tickets when you travel during quieter months such as February, or if you book a flight with a stopover. 


Find nonstop flights from Chicago ORD to San Diego SAN with Frontier Airlines 

If you’re keen to be on San Diego soil fast, don’t waste time with a stopover—filter your search results to show direct Frontier Airlines flights only. The journey takes around hour(s) min(s) – so you’ll be there before you know it. 


Flexible airline tickets for Frontier Airlines flights from Chicago ORD to San Diego SAN 

Make sure you’re not out of pocket if plans change by choosing a flexible ticket with penalty-free amendment and cancellation options. Use our ‘no change fee’ filter to see which flights have this option.  


There are a lot of reasons to book your flights to San Diego SAN from  Chicago ORD with Frontier Airlines on Travelocity 

At Travelocity our vast and up-to-the-minute inventory puts all of our best flight deals in one place. So, whether you’re traveling on business or jetting off with friends and family, you can trust Travelocity to get you there.

Frontier Airlines Airports
Hop on a(n) Frontier Airlines flight today by flying to many destinations out of these domestic and international airports:
Airport Code
Airport Name
Number of Flights
DENUSADenver Intl.13
MCOUSAOrlando Intl.7
CUNMEXCancun Intl.6
GDLMEXDon Miguel Hidalgo y Costilla Intl.5
PHLUSAPhiladelphia Intl.2
ORDUSAO'Hare Intl.2
MIAUSAMiami Intl.1
LASUSAMcCarran Intl.1
MEXMEXMexico City Intl.1
LAXUSALos Angeles Intl.1

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