Cheap Flights from Chicago O'Hare International (ORD) to San Diego (SANA)

Compare Chicago O'Hare International to San Diego flight deals

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Flight deals from Chicago O'Hare International to San Diego

Looking for a cheap last-minute deal or the best return flight from Chicago O'Hare International Airport to San Diego? If you want to travel next month, return fares start from £148. Find the lowest prices on one-way and return tickets right here.

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

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 flights are currently cheapest in June.

Direct flights from Chicago O'Hare International to San Diego

Alternative Chicago O'Hare International to San Diego routes

Looking for the cheapest, fastest or easiest route from Chicago O'Hare International to San Diego? You could fly into the following airports instead.

Chicago to San Diego: Flight information

The things to know before you go.
Cheapest flight found£55
Cheapest month to flyJune
Average flight time4 hrs, 27 mins
Most popular airlineQatar Airways
Average flights per week340

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

There are 2 airports in San Diego: San Diego International and McClellan-Palomar.
The best price we found for a return flight from Chicago O'Hare International to San Diego is £148. 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 27 minutes is the average flight time from Chicago O'Hare International to San Diego.
Qatar Airways, American Airlines and British Airways fly direct from Chicago O'Hare International to San Diego.
As of May 2026, there are 347 flights per week flying from Chicago O'Hare International to San Diego.
The cheapest month to fly from Chicago O'Hare International to San Diego is usually June.
If you're flying from Chicago O'Hare International Airport, the cheapest airport near San Diego is San Diego International – which is 2.5 miles away from the centre of San Diego. We've found flights into this airport from £148.
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 on Wednesday, 10 June 2026.
Yes – the average flight time is 4 hours and 27 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 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.
In May, the average temperature is usually around 17°C. August is typically the warmest month in San Diego, when it usually averages around 28°C. You can expect the least rain in June. The coldest month is December, with temperatures averaging 10°C. The rainiest month is February.
Currently, Frontier Airlines and Alaska Airlines offer the cheapest flight tickets to San Diego.

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

  • The average length of a direct flight from Chicago O'Hare International Airport to San Diego is 4 hours 10 minutes.

  • The timezone in San Diego is UTC-8. The city is two hours behind Chicago, where Chicago O'Hare International Airport is located.

  • Chicago O'Hare International Airport (ORD) to San Diego International Airport (SAN) is the busiest route. When looking for your flight, you can select from 77 services each week between ORD and SAN.

  • Allow plenty of time to catch your ORD to San Diego flight. As a general rule, arrive two hours before international departures and an hour ahead for domestic flights.

  • Travelling during a peak month like July? School holidays and other high seasons can lead to longer lines and delays at security. Be extra cautious and get there up to four hours before an international flight and two hours before a domestic departure.

  • Begin your journey at ORD and fly nonstop to San Diego International Airport (SAN). That will be your arrival point when searching for Chicago O'Hare International Airport to San Diego tickets.

  • Choose from a variety of airlines that offer direct flights from Chicago O'Hare International Airport to San Diego. Book your journey with one of these:

  • Travelling from central Chicago to ORD takes about 45 minutes on public transport. If you ride-share, drive or grab a taxi, you'll cover the 26 kms (16 miles) in 30 minutes or so, depending on traffic.

  • Searching for a hotel close to ORD? If you're catching an early flight from Chicago O'Hare International Airport to San Diego, these stays will put you moments from check-in:

  • Of all flights departing from Chicago O'Hare International Airport, 70% land on schedule at their destination.

  • ORD is located at 10000 West O'Hare.

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

  • The lowest price we've found for a one-way Chicago O'Hare International Airport to San Diego flight is £55. The cheapest price for a return flight is £148. Bear in mind fares may change due to demand at the time of booking.

  • To find cheap flights from ORD to San Diego, book ahead. Airlines generally offer lower fares when flights are first released.

  • Finding cheap tickets from Chicago O'Hare International Airport to San Diego is easier if you're flexible with your travel dates. Use the 'Whole month' search tool to get the lowest prices across every month and pick up an awesome deal.

  • Save time searching for cheap flights from ORD to San Diego by creating a Price Alert. You'll get an email or notification on the app when fares go down.

  • Choose your ideal arrival and departure times, airlines and number of stops with our filters. Then, sort the results for your flight from Chicago O'Hare International Airport to San Diego by 'Cheapest,' 'Fastest' or 'Best.'

Airports in San Diego

San Diego International Airport (SAN)

  • San Diego International Airport (SAN) is around 5 kms (3 miles) from central San Diego. If you're opting for a ride-share or a taxi, the drive takes about 15 minutes.

  • If you're travelling on public transport, expect a journey time of about 25 minutes.

  • If you're arriving on a late flight from Chicago O'Hare International Airport to San Diego, nothing beats the convenience of staying close to the terminal. Pick up your bags from the carousel and then be showered and resting not long after at one of these hotels near SAN:

  • For the best deal, book your vehicle from San Diego International Airport around two weeks in advance of your flight from ORD to San Diego.

  • You'll find SAN at N Harbour Dr.

McClellan-Palomar Airport (CLD)

  • If you're staying in central San Diego (or just want to see the sights straight away), the city is around 48 kms (30 miles) from McClellan-Palomar Airport (CLD). Look for any information desks to point you in the right direction after disembarking your flight from Chicago O'Hare International Airport to San Diego.

  • There are some great places to park your luggage (and yourself) near CLD. Kick back and get cosy after your ORD to San Diego flight at any of these well-located options:

  • Generally, the sooner you book, the better the deals and selection of vehicles. Secure your ride from CLD once you know your travel dates.

Best time to go to San Diego

  • It's time to choose your trip dates for your flight from Chicago O'Hare International Airport to San Diego. July is the most popular month to visit San Diego. If you prefer a more relaxed vibe, go in December.

  • Book a Chicago O'Hare International Airport to San Diego plane ticket with a departure in August to explore the city during its warmest month. Expect temperatures to range from 16ºC to 27ºC.

  • February sees average temperatures of between 8ºC and 22ºC. Look for a cheap ticket from ORD to San Diego around that time if you like cooler conditions.

More about San Diego

  • Start your San Diego trip right by choosing the perfect place to stay. Once you've booked your flight from Chicago O'Hare International Airport to San Diego, explore our range of hotels including:

  • There are so many things to see and do in this city it can be hard to know where to begin. San Diego Balboa Park, San Diego Zoo and USS Midway Museum are leading attractions which should feature on any good San Diego itinerary.

Explore more of the United States

  • You've seen San Diego, now it's time to explore other parts of the United States. Travel about 177 kms (110 miles) northwest to Los Angeles to tick off its popular sights. From Hollywood Sign to Universal Studios Hollywood and Hollywood Bowl, you've got a jam-packed schedule ahead.

  • Around 483 kms (300 miles) east of San Diego, Phoenix is another essential stop in the United States. Get a taste of what this destination has to offer at Camelback Mountain, Yayoi Kusama Fireflies Infinity Mirror Room and Heard Museum.

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