United Cheap Flights from Chicago to San Diego: UA ORD→SAN

View HK$970 flight on Wed, 28 Jan 2026Opens in a new window
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Prices were available within the past 7 days and start at HK$970 for one-way flights and HK$2,939 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

United
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
SAN
San Diego
HK$2,939 Return, just found
HK$2,939
Return
just found
Select United flight, departing Fri, 12 Jun from Chicago to San Diego, returning Fri, 19 Jun, priced at HK$2,939 just found
United
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
SAN
San Diego
HK$2,951 Return, just found
HK$2,951
Return
just found
Select United flight, departing Fri, 12 Jun from Chicago to San Diego, returning Fri, 19 Jun, priced at HK$2,951 just found
United
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
SAN
San Diego
HK$3,015 Return, just found
HK$3,015
Return
just found
Select United flight, departing Fri, 12 Jun from Chicago to San Diego, returning Fri, 19 Jun, priced at HK$3,015 just found
United
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
SAN
San Diego
HK$3,027 Return, just found
HK$3,027
Return
just found
Select United flight, departing Fri, 12 Jun from Chicago to San Diego, returning Fri, 19 Jun, priced at HK$3,027 just found
United
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
SAN
San Diego
HK$3,091 Return, just found
HK$3,091
Return
just found
Select United flight, departing Fri, 12 Jun from Chicago to San Diego, returning Fri, 19 Jun, priced at HK$3,091 just found
United
Fri, 12 Jun - Fri, 19 Jun
ORD
Chicago
SAN
San Diego
HK$3,218 Return, just found
HK$3,218
Return
just found
Select United flight, departing Fri, 12 Jun from Chicago to San Diego, returning Fri, 19 Jun, priced at HK$3,218 just found

Find the cheapest month to fly from Chicago (ORD) to San Diego (SAN)

February is typically the cheapest month to fly

From HK$706 - HK$1,296 per traveller.

Alternative airports near San Diego

Prices were available within the past 7 days. Prices and availability are subject to change.

Select flight to McClellan-Palomar CLD. Cheapest option available. Average driving time to city centre is 38 minutes. Flights from HK$3,370
CLD
McClellan-Palomar
Cheapest
Average driving time to city centre38 min
Flights from HK$3,370

Frequently asked questions

How much is a United Airlines flight from O'Hare Intl. Airport (ORD) to San Diego Intl. Airport (SAN)?
Make use of the "Price (lowest to highest)" filter on Expedia to look for cheap United Airlines round-trip flights from HK$2,939 from ORD to SAN. Affordable one-way options from HK$970 are also on offer.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from ORD to SAN with United Airlines?
United Airlines flights to San Diego are typically more affordable in the quieter months of January and November. Whether you're searching for a return or one-way ticket, you could find a better deal then.
Does United Airlines fly nonstop from O'Hare Intl. Airport (ORD) to San Diego Intl. Airport (SAN)?
United Airlines operates direct flights from O'Hare Intl. Airport (ORD) to San Diego Intl. Airport (SAN), with 25 departures each week. Simply choose the "Nonstop" and "Airline" filters during your search on Expedia to show all direct United Airlines flights to SAN.
How long does it take to fly from ORD to SAN with United Airlines?
Leave O'Hare Intl. Airport (ORD) for San Diego Intl. Airport (SAN) on a nonstop United Airlines flight, and you'll be airborne for around 4h 35m.
Which day of the week has the most United Airlines flights from O'Hare Intl. Airport (ORD) to San Diego Intl. Airport (SAN)?
United Airlines has the most flights from O'Hare Intl. Airport (ORD) to San Diego Intl. Airport (SAN) on Saturday. With up to 4 daily departures, you'll get the most choice and flexibility on this day.
What airports does United Airlines fly into in San Diego?
United Airlines flights from O'Hare Intl. Airport (ORD) to San Diego arrive at San Diego Intl. Airport (SAN). This is the main gateway here.
What type of plane does United Airlines fly from O'Hare Intl. Airport (ORD) to San Diego Intl. Airport (SAN)?
United Airlines typically uses Airbus A321neo planes for flights from O'Hare Intl. Airport (ORD) to San Diego Intl. Airport (SAN). This airline also operates the Boeing 737 MAX 8 on this route. Keep in mind that aircraft type can change due to operational requirements, so the plane you board could be different when you leave.
Can I change or cancel my United Airlines flight from O'Hare Intl. Airport (ORD) to San Diego Intl. Airport (SAN)?
Changes are typically free within 24 hours of making a booking, but your airline may charge a fee after that time. For more details about altering your reservation, head to your "Trips," select your flight and click on "Manage Booking." If you want the freedom to update your itinerary without being charged, check the "Changes included" and "No cancel fee" filters when planning your next escape.

Travel information

Origin airport
O'Hare Intl.
Destination airport
San Diego Intl.
Distance
2752 km
Average flight time
2 hours 34 mins

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