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Cheap flights from Chicago O'Hare International to San Diego International

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Compare Chicago O'Hare International to San Diego International flight deals

Find the cheapest month or even day of the year to fly to San Diego International

Book the best San Diego International fare with no extra fees

Flight deals from Chicago O'Hare International to San Diego International

Looking for a cheap last-minute deal or the best return flight from Chicago O'Hare International to San Diego International? Find the lowest prices on one-way and return tickets right here.
San Diego.P6,575 per passenger.Departing Tue, 8 Apr, returning Tue, 15 Apr.Return flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Tue, 8 Apr, arriving in San Diego International.Inbound indirect flight with Spirit Airlines, departs from San Diego International on Tue, 15 Apr, arriving in Chicago O'Hare International.Price includes taxes and charges.From P6,575, select.
San Diego.P6,994 per passenger.Departing Sat, 26 Apr, returning Sat, 3 May.Return flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Sat, 26 Apr, arriving in San Diego International.Inbound indirect flight with Spirit Airlines, departs from San Diego International on Sat, 3 May, arriving in Chicago O'Hare International.Price includes taxes and charges.From P6,994, select.
San Diego.P6,994 per passenger.Departing Mon, 31 Mar, returning Wed, 2 Apr.Return flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Mon, 31 Mar, arriving in San Diego International.Inbound indirect flight with Spirit Airlines, departs from San Diego International on Wed, 2 Apr, arriving in Chicago O'Hare International.Price includes taxes and charges.From P6,994, select.
San Diego.P7,569 per passenger.Departing Mon, 5 May, returning Mon, 12 May.Return flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Mon, 5 May, arriving in San Diego International.Inbound indirect flight with Spirit Airlines, departs from San Diego International on Mon, 12 May, arriving in Chicago O'Hare International.Price includes taxes and charges.From P7,569, select.
San Diego.P7,974 per passenger.Departing Tue, 18 Mar, returning Thu, 20 Mar.Return flight with Spirit Airlines.Outbound indirect flight with Spirit Airlines, departs from Chicago O'Hare International on Tue, 18 Mar, arriving in San Diego International.Inbound indirect flight with Spirit Airlines, departs from San Diego International on Thu, 20 Mar, arriving in Chicago O'Hare International.Price includes taxes and charges.From P7,974, select.
San Diego.P10,170 per passenger.Departing Sat, 12 Apr, returning Sat, 19 Apr.Return flight with American Airlines.Outbound direct flight with American Airlines departs from Chicago O'Hare International on Sat, 12 Apr, arriving in San Diego International.Inbound direct flight with American Airlines departs from San Diego International on Sat, 19 Apr, arriving in Chicago O'Hare International.Price includes taxes and charges.From P10,170, select.
San Diego.P10,170 per passenger.Departing Tue, 13 May, returning Sat, 17 May.Return flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Tue, 13 May, arriving in San Diego International.Inbound direct flight with United departs from San Diego International on Sat, 17 May, arriving in Chicago O'Hare International.Price includes taxes and charges.From P10,170, select.
San Diego.P10,182 per passenger.Departing Tue, 29 Apr, returning Sat, 3 May.Return flight with United.Outbound direct flight with United departs from Chicago O'Hare International on Tue, 29 Apr, arriving in San Diego International.Inbound direct flight with United departs from San Diego International on Sat, 3 May, arriving in Chicago O'Hare International.Price includes taxes and charges.From P10,182, select.

Find the cheapest month to fly from Chicago O'Hare International to San Diego International

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like Chicago O'Hare International to San Diego International flights are currently cheapest in April.
Mar
from P7,974
Apr
from P6,575
May
from P7,569
Jun
from P14,020
Jul
from P14,020
Aug
from P16,928
Sep
from P21,101
Oct
from P21,076
Nov
from P21,101
Dec
from P26,818
Jan
Find prices
Feb
Find prices

Direct flights from Chicago O'Hare International to San Diego International

Chicago O'Hare International to San Diego International: Alternative routes

Compare routes from Chicago O'Hare International to San Diego below. You may find an airport to fly into that's cheaper, faster, or easier than San Diego International.

Chicago to San Diego: Flight information

The things to know before you go.
Cheapest flight foundP6,575
Cheapest month to flyApril
Average flight time4 hrs, 26 mins
Most popular airlineUnited
Average flights per week280

Finding cheap flights from Chicago O'Hare International to San Diego International: Frequently asked questions

The best price we found for a return flight from Chicago O'Hare International to San Diego International is P6,575. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
4 hours and 26 minutes is the average flight time from Chicago O'Hare International to San Diego International.
United, Alaska Airlines and American Airlines fly direct from Chicago O'Hare International to San Diego International.
As of March 2025, there are 280 flights per week flying from Chicago O'Hare International to San Diego International.
The cheapest month to fly from Chicago O'Hare International to San Diego International is usually March 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from Chicago O'Hare International Airport to San Diego International Airport on Tuesday, 8 April 2025.
Yes – the average flight time is 4 hours and 26 minutes.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego International but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
We crunched all the numbers in our flight calendar and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Spirit Airlines and United offer the cheapest flight tickets to San Diego International.

Travelling from O'Hare International Airport (ORD) to San Diego International Airport (SAN): what you need to know

  • A direct flight from O'Hare International Airport to San Diego International Airport takes an average of 4 hours 22 minutes. The timezone in San Diego is UTC-7, which is 2 hours behind Chicago.

  • Flights from O'Hare International Airport to San Diego International Airport start from 06:15 — the first with United Airlines. The latest flight is the 22:59 option with American Airlines. Overall, you can choose from 80 services every week from ORD to SAN.

  • If you're flying during a bank holiday or other peak period, allow for even more time. A good rule is two hours before domestic flights and up to four hours before international departures. Lines at check-in and security will be longer.

  • If you want to have a stopover for your flight from O'Hare International Airport to San Diego International Airport, just uncheck 'Direct flights only' and look at all your options. These are the most popular stopovers between ORD and SAN:

    • Harry Reid Airport (formerly McCarran Airport)

    • Denver International Airport

    • Phoenix Sky Harbour International Airport

How to find the cheapest flights from O'Hare International Airport (ORD) to San Diego International Airport (SAN)

  • The lowest price we've seen for a one-way ticket from O'Hare International Airport to San Diego International Airport is P3,635. For a return flight on this route, the best price is P6,575. Depending on the availability and when you book, these fares can change.

  • To score cheap tickets from ORD to SAN, reserve your journey 9 months before your planned departure.

  • May is the cheapest month for tickets from O'Hare International Airport to San Diego International Airport. If you'd like to fly during a different time of year, the 'Whole month' tool will show you the lowest prices for each month.

  • Log into your online account or use the app to set up a Price Alert. We'll get in touch right away if there's a better deal on this route. It doesn't take long, and it'll save you time checking for cheap tickets from ORD to SAN every day.

  • Use filters to tailor your flights from O'Hare International Airport to San Diego International Airport. Select your ideal departure and arrival times, number of stops and airlines. Or sort your results by 'Cheapest' to get the best deals.

Handy information about O'Hare International Airport (ORD)

Arriving at San Diego International Airport (SAN)

Getting from San Diego International Airport (SAN) to central San Diego

  • San Diego International Airport to the centre of San Diego takes around 9 minutes by car. It's approximately 5 kilometres away. Discover what options are available, such as car rentals, cabs or ride-sharing.

  • It typically takes 20 minutes if you're travelling on public transport.

When to fly to San Diego International Airport (SAN)

  • The quietest month for a flight from O'Hare International Airport to San Diego International Airport is May, while July is the busiest. Pick the best time to go to San Diego based on whether you prefer a laid-back vibe or a more bustling atmosphere.

  • Before locking in your flight from O'Hare International Airport to San Diego International Airport, consider the type of weather you enjoy. August is the warmest month in San Diego, with temperatures ranging from 17 ºC to 28 ºC.

  • If you want to travel in cooler conditions, look for a cheap ticket from ORD to SAN in February. Temperatures average between 7 ºC and 23 ºC then.

More about San Diego

  • When it comes to looking for somewhere to lay your head, you'll find the top stays in San Diego right here. Browse these options once you've locked in your flight from ORD to SAN:

  • San Diego Zoo and USS Midway Museum are just a couple of the top-rated attractions to add to your San Diego itinerary. Keep the adventure rolling by checking out SeaWorld San Diego.

Complete your San Diego trip with hotels and a car rental

  • You've booked a cheap ticket to San Diego International Airport — now it's time to find a great stay, and perhaps even your own set of wheels. We've compared prices across hundreds of companies to bring you the best hotels and car rental deals in San Diego.

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Plan the rest of your trip from Chicago to San Diego

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.