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

Travellers and cabin class

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

Find the cheapest month or even day of the year to fly to Chicago O'Hare International

Book the best Chicago O'Hare International fare with no extra fees

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

Looking for a cheap last-minute deal or the best return flight from San Diego International to Chicago O'Hare International? Find the lowest prices on one-way and return tickets right here.

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

We’re always keeping an eye on fares, so you can find the best one in seconds. It looks like San Diego International to Chicago O'Hare International flights are currently cheapest in June.

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

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

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

San Diego to Chicago: Flight information

The things to know before you go.
Cheapest flight foundRs16,587
Cheapest month to flyJune
Average flight time4 hrs, 16 mins
Most popular airlineAlaska Airlines
Average flights per week370

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

The best price we found for a return flight from San Diego International to Chicago O'Hare International is Rs25,963. 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 16 minutes is the average flight time from San Diego International to Chicago O'Hare International.
Alaska Airlines, American Airlines and United fly direct from San Diego International to Chicago O'Hare International.
As of June 2025, there are 370 flights per week flying from San Diego International to Chicago O'Hare International.
The cheapest month to fly from San Diego International to Chicago O'Hare International is usually June 2025.
After crunching the numbers on our flight calendar, we found that it's currently cheapest to fly from San Diego International Airport to Chicago O'Hare International Airport on Friday, 15 August 2025.
Yes – the average flight time is 4 hours and 16 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 Chicago O'Hare 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 Chicago is around 40 days in advance, so don’t leave your flight to the last minute.
Currently, Frontier Airlines offers the cheapest flight tickets to Chicago O'Hare International.

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

  • Around 4 hours 10 minutes is how long you'll be travelling on a direct flight from San Diego International Airport to O'Hare International Airport.

  • Chicago is two hours ahead of San Diego and observes the UTC-5 timezone.

  • Every week, there are 79 San Diego International Airport to O'Hare International Airport flights. If you'd like to be on board early, pick the 06:15 United Airlines flight. If you're eager to make the most of your day before you fly, the last flight is at 22:59 with American Airlines.

  • Give yourself enough time to make your SAN to ORD flight. Generally, it's best to arrive two hours before international departures and an hour ahead for domestic flights.

  • Travelling during a peak time like July? Major public holidays and other popular seasons can mean longer lines and delays at airport checkpoints. Play it safe and arrive up to four hours ahead of an international flight and two hours before domestic departures.

  • American Airlines is your ticket to exploring Chicago (and perhaps some other exciting parts of United States!). Browse the direct flights from San Diego International Airport to O'Hare International Airport offered by this airline.

  • The airline with the highest booking volume on this route is American Airlines.

  • American Airlines is the most punctual carrier operating SAN to ORD flights. A reliable 80.89% of its departures on this route land as scheduled.

  • If you'd like to split up your journey, simply uncheck 'Direct flights only' when searching for your ticket from San Diego International Airport to O'Hare International Airport. Here are the most popular stopovers between SAN and ORD:

    • Phoenix Sky Harbour International Airport

    • Denver International Airport

    • Minneapolis-St. Paul International Airport

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

  • Rs16,587 is currently the best price for a one-way San Diego International Airport to O'Hare International Airport flight. A return flight starts from Rs25,963. These prices may change based on demand.

  • To secure cheap tickets from SAN to ORD, book your trip six months before your departure date.

  • Plan your trip for May. That's the cheapest month for flights from San Diego International Airport to O'Hare International Airport. If you're flexible on when you fly, use the 'Whole month' tool to find the lowest price across each month.

  • Finding cheap flights from SAN to ORD is easy with Price Alerts. Simply set up one of these automatic alerts and we'll get in touch when a lower fare pops up.

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

Handy information about San Diego International Airport (SAN)

  • You'll find SAN at Airport Drive.

  • Of all flights leaving San Diego International Airport, 71.38% arrive on time at their destination.

  • San Diego International Airport is around 5 kilometres from central San Diego. If you're driving, ride-sharing or catching a cab from the centre, it'll take 10 minutes or so to get there, depending on the traffic.

  • You can expect a journey time of around 20 minutes on public transport.

  • Taking an early flight from San Diego International Airport to O'Hare International Airport? Avoid the hassle of rushing to the terminal (and catch some extra z's) by picking one of these hotels close to SAN:

Arriving at O'Hare International Airport (ORD)

Getting from O'Hare International Airport (ORD) to central Chicago

  • You'll find ORD at 10000 West O'Hare.

  • O'Hare International Airport to central Chicago has a drive time of around 35 minutes. It's approximately 40 kilometres away.

  • It takes roughly 55 minutes if you're travelling by public transport.

When to fly to O'Hare International Airport (ORD)

  • It's time to plan your dates for your flight from San Diego International Airport to O'Hare International Airport. August is the busiest month to head to Chicago. If you want a more laid-back vibe, go in January.

  • The warmest month in Chicago is July, with the temperature ranging between 15ºC and 29ºC. Lock in your flights from San Diego International Airport to O'Hare International Airport in this month if this is the type of weather you enjoy.

  • If you like travelling in cooler conditions, look for a cheap ticket from SAN to ORD in January. Temperatures average between -12ºC and 3ºC then.

Explore more of United States

  • Columbus is just one of the many places in United States waiting to be discovered after you've seen Chicago. Around 451 kilometres away to the south-east, well-known attractions include Franklin Park Conservatory and Botanical Gardens, Ohio Statehouse and German Village.

  • Around 257 kilometres south-east of Chicago, Indianapolis is another favourite stop in United States. Get a taste of what this destination has to offer at The Children's Museum of Indianapolis, Indianapolis Museum of Art and Indianapolis Zoo.

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