CHI - SAN

$79 Find Cheap Flights from Chicago to San Diego

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Chicago to San Diego departing on 1/20. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy, 0 bags

KAYAK searches hundreds of travel sites at once for deals on flights to San Diego

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to San Diego.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Chicago to San Diego.
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Everything you should know

Cheapest round-trip
$159
Overall average: $471
Frontier
Fri 3/13Mon 3/16
ORD - SAN • 1 stop
Cheapest non-stop
$160
Typical prices: $193-$695
Southwest
Sat 2/14Tue 2/17
MDW - SAN • Non-stop
Our travelers' advice
AI-powered summary based on content written by travel experts. AI can make mistakes.
Southwest offers two free checked bags for families.
MDW provides a user-friendly experience with short lines.
Expert advice
Expert advice
Expert advice
Expert advice
Video guide: How to find cheap flights to San Diego
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Top airlines
Alaska Airlines
Cheapest • from $167 (round-trip)
Alaska Airlines
Best reviews • 8.0 score
Airline reviews
Airline reviews
+1
+1
Airline reviews
Airline reviews
+1
Top routes
ORD-SAN
Cheapest • 2% average savings
ORD-SAN
Most popular
Insights
Insights
Insights
Insights
When to book
3 weeks
in advance
Our data shows that travelers who book at least 3 weeks in advance save around 46% compared to booking last minute.
Insights
Insights
Insights
Insights
When to travel
October
Cheapest • 26% price drop
December
Most popular
Good to know
Good to know
+1
+1
Good to know
Good to know
+1
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to San Diego!
Flight Deals
Booking Insights
Expert advice
Flight Deals

Cheap Flights from Chicago to San Diego (CHI-SAN)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Chicago to San Diego that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Chicago to San Diego

Fri, Mar 13 - Mon, Mar 16
Frontier Logo
6:30 pm - 12:09 am
ORD
-
SAN
7h 39m1 stop
Frontier Logo
9:00 am - 1:07 am
SAN
-
ORD
14h 07m1 stop
$159Frontier
Sat, Feb 14 - Tue, Feb 17
Southwest Logo
8:05 am - 10:40 am
MDW
-
SAN
4h 35mnonstop
Southwest Logo
6:30 pm - 12:25 am
SAN
-
MDW
3h 55mnonstop
$160Southwest
Mon, Mar 30 - Mon, Apr 6
Frontier Logo
8:55 pm - 1:13 pm
ORD
-
SAN
18h 18m1 stop
Frontier Logo
6:25 am - 12:12 am
SAN
-
ORD
15h 47m1 stop
$160Frontier
Thu, Jan 15 - Thu, Jan 22
Frontier Logo
4:31 pm - 7:31 pm
ORD
-
SAN
29h 00m1 stop
Frontier Logo
6:30 am - 6:31 pm
SAN
-
ORD
10h 01m1 stop
$161Frontier
Thu, Mar 12 - Mon, Mar 16
Frontier Logo
10:53 am - 12:09 am
ORD
-
SAN
15h 16m1 stop
Frontier Logo
9:00 am - 1:07 am
SAN
-
ORD
14h 07m1 stop
$162Frontier
Sat, Jan 17 - Sat, Jan 24
United Airlines Logo
2:40 pm - 8:49 pm
ORD
-
SAN
8h 09m1 stop
United Airlines Logo
2:11 pm - 8:25 pm
SAN
-
ORD
4h 14mnonstop
$163United Airlines
Sat, Jan 17 - Sat, Jan 24
Southwest Logo
7:40 pm - 10:10 pm
MDW
-
SAN
4h 30mnonstop
Southwest Logo
7:25 am - 4:45 pm
SAN
-
MDW
7h 20m2 stops
$163Southwest
Tue, Jan 13 - Sun, Jan 18
Frontier Logo
12:00 pm - 12:40 pm
ORD
-
SAN
26h 40m1 stop
Frontier Logo
11:50 am - 9:24 pm
SAN
-
ORD
7h 34m1 stop
$164Frontier
Fri, Jan 23 - Sat, Jan 31
Alaska Airlines Logo
3:44 pm - 6:26 pm
ORD
-
SAN
4h 42mnonstop
Alaska Airlines Logo
5:10 pm - 11:37 pm
SAN
-
ORD
4h 27mnonstop
$166Alaska Airlines
Sat, Feb 14 - Thu, Mar 19
Alaska Airlines Logo
3:07 pm - 5:52 pm
ORD
-
SAN
4h 45mnonstop
Alaska Airlines Logo
8:00 am - 2:26 pm
SAN
-
ORD
4h 26mnonstop
$167Alaska Airlines
Booking Insights

KAYAK's insights & trends for Chicago to San Diego flights

Get data-powered insights and trends into flights from Chicago to San Diego to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to San Diego
Find cheap flights to San Diego

Planning a trip from Chicago to San Diego? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

How much is a round-trip flight from Chicago to San Diego?

This analysis is based on the cheapest round-trip price found on KAYAK in the last 12 months by searching for a flight from Chicago to San Diego departing in March.

What is the cheapest Chicago to San Diego flight route?

Data is based on round-trip flight searches on KAYAK over the past month.

The absolute cheapest return flight from Chicago to San Diego costs $150 on the route between Chicago O'Hare Intl Airport (ORD) and San Diego (SAN). However, over the past month, flights between Chicago Midway Airport (MDW) and San Diego (SAN) were, on average, 2% cheaper than other Chicago-San Diego routes. The most popular route is between Chicago O'Hare Intl Airport (ORD) and San Diego (SAN).

What’s the cheapest day of the week to fly from Chicago to San Diego?

The average price of all round-trip flights from Chicago to San Diego clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Chicago to San Diego, look for departures on Fridays and avoid leaving on a Monday, as it's usually the priciest day. When flying back from San Diego, Thursday is the cheapest day to fly and Sunday is the most expensive.

What is the cheapest month to fly from Chicago to San Diego?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Chicago to San Diego, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Chicago to San Diego is October, where tickets cost $226 (return) on average. On the other hand, the most expensive months are March and April, where the average cost of round-trip tickets is $433 and $383 respectively.

Can I save money by flying with a layover from Chicago to San Diego?

The average round-trip price for all non-stop flights, flights with one layover, and flights with two layovers for the route found by users searching on KAYAK in the last 2 weeks.

Yes, flying with a layover may cost you more time, but you can also save money on the route, with a 1 stop layover the cheapest option at $214 on average.

How far in advance should I book a flight from Chicago to San Diego?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Chicago to San Diego, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Chicago to San Diego, you should book around 3 weeks before departure, which saves you about 46% compared to booking last minute. For the absolute cheapest price, our data suggests you should book 11 weeks before departure.

Expert advice

Expert advice for your flight from Chicago to San Diego

 
AI-powered summary based on content written by travel experts. AI can make mistakes.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
American Airlines

Main Cabin Extra offers early boarding and complimentary drinks, ideal for longer flights.


Download the American Airlines app for in-flight entertainment access on your device.

United Airlines

United's Economy Plus offers up to six inches more legroom for added comfort.


Check United's Wi-Fi coverage map before your flight for reliable internet access.

Southwest

Southwest offers free snacks and drinks, with Wi-Fi for streaming entertainment.


Southwest's Rapid Rewards program offers unlimited rewards seats and no blackout dates.

Airports
ORD

For a quick commute to downtown Chicago, take the CTA Blue Line train from ORD, which runs 24 hours and avoids traffic delays.

MDW

MDW offers a user-friendly experience with shorter security lines and easy navigation, ideal for domestic travelers.

SAN

Use the Route 992 bus for a cost-effective 15-minute ride from SAN to Downtown San Diego, available every 15 minutes.

Our travel experts
Harriet Baskas

Harriet Baskas

Expert on American Airlines

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines, ORD and MDW

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Blane Bachelor

Blane Bachelor

Expert on Southwest

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Brandon Schultz

Brandon Schultz

Expert on SAN

Brandon Schultz

Brandon Schultz

Brandon Schultz is an award-winning food and travel writer based in New York City. His work has appeared in Forbes, AAA, Thrillist, Travel + Leisure, and The Daily Meal, among many others, and he is the author of 6 books, including 3 cookbooks.

Read more

Good to know

Low seasonSeptember
Cheapest flight$79
Best time to beat the crowds with an average 21% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Chicago Midway Airport to San Diego

When to book flights from Chicago to San Diego

Are your dates flexible? Find out the best times to travel from Chicago to San Diego based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Chicago to San Diego

  • Is there free Wi-Fi at O'Hare International Airport?

    Unlimited free Wi-Fi is available at the O'Hare International Airport throughout all terminals. If you want to access the Wi-Fi, enable wireless connection on your device and connect to “_Free_ORD _Wi-Fi” or “Boingo Hotspot.”

  • Are there nonstop flights from Chicago to San Diego?

    For flights from Chicago to San Diego, there are several airlines that serve this route, including American Airlines and United Airlines. Both offer nonstop flights from the O'Hare International Airport to the San Diego International Airport. You can also find flights by Frontier, which flies through Denver International Airport (DEN), but it could take longer, so book through KAYAK to compare routes and find the best option.

  • Where’s the chapel at O'Hare International Airport?

    The O'Hare International Airport offers a chapel, a peaceful space in the busy airport you can use for prayers, liturgies, and worship. It’s equipped with prayer books, worship materials, rosaries, rugs, and Juma ablution facilities. The facility is in Terminal 2 Mezzanine level above Delta Air ticket counters next to USO.

  • Are there lactation rooms at San Diego Airport?

    Mothers can access three lactation rooms found in each terminal post-security. In Terminal 1 West, you can find the lactation rooms on the second level. The rooms in Terminal 1 East are near the security checkpoint, while in Terminal 2 West, they’re on the second level. Each of these rooms is equipped with electrical outlets, artwork, a handwashing station, soft lighting, comfortable seating, and a children’s seat.

  • Are there hotels near the San Diego International Airport?

    There are no hotels within the airport. The closest near the airport is the Sheraton Hotel & Marina, located at a 10min walking distance or 3min if you’re using the free hotel shuttle. The Hampton Inn & Suites is located about a mile away, a 5min drive from the terminal. You can also book the TownPlace Suites by Marriott, located at a 5min driving distance from the airport.

  • What is the cheapest flight from Chicago to San Diego?

    In the last 3 days, the lowest price for a flight from Chicago to San Diego was $79 for a one-way ticket and $159 for a round-trip.

  • Do I need a passport to fly between Chicago and San Diego?

    No, a passport isn't needed to fly from Chicago to San Diego. However, local authorities might ask for an official ID.

  • Which airports will I be using when flying from Chicago to San Diego?

    Chicago has 2 major airports: Chicago Midway and Chicago O'Hare Intl. San Diego is the only airport in San Diego. You’ll usually find the cheapest deals if you fly from Chicago O'Hare Airport.

  • Which airlines offer Wi-Fi service onboard planes from Chicago to San Diego?

    American Airlines, Alaska Airlines, JetBlue, and Hawaiian Airlines offer inflight Wi-Fi service on the Chicago to San Diego flight route.

  • Which aircraft models fly most regularly from Chicago to San Diego?

    The Boeing 737-800 is the aircraft model that flies most regularly on the Chicago to San Diego flight route.

  • Which airline alliances offer flights from Chicago to San Diego?

    SkyTeam, Star Alliance, and oneworld are the airline alliances operating flights between Chicago and San Diego, with SkyTeam being the most commonly used for this route.

  • On which days can I fly direct from Chicago to San Diego?

    There are nonstop flights from Chicago to San Diego on a daily basis.

  • Which is the best airline for flights from Chicago to San Diego, Alaska Airlines or Southwest?

    The two airlines most popular with KAYAK users for flights from Chicago to San Diego are Alaska Airlines and Southwest. With an average price for the route of $249 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Southwest is also a great choice for the route, with an average price of $401 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Chicago to San Diego?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Chicago to San Diego.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Chicago to San Diego?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Diego from Chicago is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Chicago to San Diego?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Diego with an airline and back to Chicago with another airline.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Chicago to San Diego?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Diego from Chicago up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Chicago to San Diego

  • Looking for a cheap flight? 25% of our users found flights on this route for $134 or less one-way and $201 or less round-trip.
  • Located 14 miles from the Loop Business District, the O'Hare International Airport is the ideal airport if you’re traveling from Chicago to San Diego, California.
  • If you need shower facilities at the O'Hare International Airport, they’re available at Concourse C. You can also access the VIP lounge if you’re a VIP member and need these services.
  • For mothers with small children, the O'Hare International Airport offers a Mother’s Room to help mothers nurse, use a breast pump, and care for young children. The rooms are in each terminal.
  • The O'Hare International Airport offers free unlimited Wi-Fi. You can connect to the Wi-Fi by searching “_Free_ORD _Wi-Fi.” It comes with ads, but you can also use a premium high-speed option for a fee.
  • For flights from the O'Hare International Airport to San Diego, you can use the San Diego International Airport (SAN), located 3 miles from downtown San Diego.
  • When you arrive at San Diego International Airport, you can explore the dining options at Terminal 1, including Banker’s Hill Bar & Market. On Terminal 2, there are options like the Artisan Market and Starbucks at Gate 37.
  • To access cash, you can use ATMs throughout the San Diego International Airport. In Terminal 1, they’re past the checkpoint near Gate 1, in the lobby opposite the food court, near Gate 5, and near Gate 13. The ATMs are also available in Terminal 2.
  • There are courtesy phones at San Diego International Airport throughout the terminals, which offer complimentary local calls. For long-distance calls, you can purchase phone cards at most retail concessions.

Prefer to fly direct from Chicago to San Diego?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Chicago to San Diego.
Find which airlines fly direct from Chicago to San Diego Airport, which days they fly and book direct flights.

Direct departures

Chicago to San Diego

Monday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Tuesday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Wednesday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Thursday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Friday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Saturday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Sunday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

See more direct flights

Direct returns

San Diego to Chicago

Monday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Tuesday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Wednesday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Thursday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Friday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Saturday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

Sunday

Alaska Airlines, American Airlines, Southwest, +1 more

Alaska Airlines, American Airlines, +2 more

See more direct flights

Reviews of the top 5 airlines serving from Chicago to San Diego

 
See real verified KAYAK customer reviews for airlines flying from Chicago to San Diego. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Chicago to San Diego? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 11550 reviews
8.1Boarding
7.0Entertainment
7.1Food
7.8Comfort
8.5Crew
Airline reviews

Did not like that every price option offered, even the more expensive one, required I pay for my seat. My seat was changed without my consent My TSA did not show in Boarding Pass

6.0 GoodAnonymous, Dec 2025
FLL - SAN
Read more Alaska Airlines reviews

Did not like that every price option offered, even the more expensive one, required I pay for my seat. My seat was changed without my consent My TSA did not show in Boarding Pass

Boarding passes could not be received online, even after online check-in. While they appeared on the Alaska.com app, they did not transfer to inbox or messages and were not available at all on the Alaska.com app following the check-in process. There was no choice other than to get boarding passes at the airport counter.

Poor, the last leg of our trip was cancelled and we didn't know about it until we arrived at the airport. Another flight on the same airline was not available until three days later which would have ruined our vacation. Luckily we were able to get re-blooked on another airline after spending hours at the airport.

The flight was fine. The connecting flight was a nightmare. Gate change without text or email notification was super frustrating and I ended up missing my connecting flight. Return flight was delayed and had I not quadruple checked flight time, gate and refreshed the Alaska Airlines app every 5 minutes, I would have taken a flight that would not arrive in time for my connecting flight. Ended up flying Delta home.

The flight was delayed so we didn’t get into San Diego until almost 1 AM. Otherwise, it was lovely.

I always like flying with Alaska, great service and leg room

They changed our flight from a one stop 3 hour layover to a non-stop. Saved us hours and got us there sooner.

A very good experience - all staff was friendly and helpful.

My mother suffers from Lupus and has challenges walking. I specifically called Alaska airlines, stated her condition and made sure my mother’s had wheel char assistance towards gate and into the gate hall so she just had to get into the plane and walk a couple of steps. It was assured by Alaska team that the service was granted in both airports , DEN and SAN . In Denver , the wheelchair assistance never arrived. I had to personally grab another airline wheelchair sit my mom.Then I had to go to Alaska Airlines front desk twice to let them know my mother was waiting at the wheelchair service station. Upon arrival to SD Airport , there was no wheelchair service waiting for her in the hall before deplaning. She had to walk her way out in pain. Absolutely inconsiderate and unacceptable by the airline! Never again flying with Alaska Airlines.

Waiting 2 hours after landing to arrive at a gate was ridiculous.

The boarding and seat assignment system no longer works for me, but I know it is being replaced. Otherwise, I am good with the overall experience.

The lead steward kept singing about "San Francisco" and hotel California---more annoying than humorous....needs work. Flight was smooth and on time.

Still a fan of open seating. Flight was on schedule and arrived on time. The 737 MAX is very comfortable.

San Diego airport is brand new, spacious, airy and very smooth checkin at SW baggage drop.

Plane crashed into a bus or some other vehicle on the ground while pulling out of the gate. No injuries, but wing tip was damaged and returned to gate for “maintenance issues” and we departed 5 hours later because the plane went out of service and new plane was flown in from a nearby airport, Midway.

Ever since Southwest starting charging for bags, passengers don't want to pay to check their bags, so the gate agents have to beg people to check their roller bags now because there's "not enough space". This was a terrible business move by Southwest.

All was good. I just had a hard time getting connected to the WiFi/internet during the flight

Delays delays delays. Late taking off, late landing, wait for a gate, etc.

Connecting flight is on time and boarding was a breeze!

Better and more food and drinks. Put msnbc and free speech tv on the news channel selection list.

Great flight. On time boarding. Smooth flight and on time arrival at EWR. The flight crew was marvelous and there was a great selection of movies on the entertainment system. Our bags were at the carousel before we got there. Another excellent flight from United.

I liked the snacks and the flight attendants were friendly.

After a delay at the gate, C3, at Ohare on Sunday, I left my Blk ski coat on the bench at the gate, lost! Please review my lob claim, thx.

Very thoughtful flight attendant offered me water immediately since I had run to make my connection.

Always wish for more healthy, gluten free options. We have to bring our own.

Having a long layover, I was very appreciative of the ability to stand by for an earlier flight. Other airlines like Delta have refused this to me in the past, just to be mean (because my ticket class wasn't high enough). United went out of their way to help me get to my destination early, which I really appreciated given that it was the third leg of a 24+ hour journey for me.

Other than a way way too cold cabinets for the entire flight, all was great

One bag is incorrect and not acceptable for an international flight. The food was not just good. I won't fly with them again.

Excellent flight. Smooth, efficient boarding. Quick flight. Arrived early at STL.

I will never book a flight through Cheap fare. They booked me from Portland Main . And would not give me a refund, so I bought 2 tickets one for 299. From Portland Main to ORD. Then I had to buy a ticket from Oregon PDX to ORD that was another 440. So Just so you know they even told me it was there fault but no refund. Bad bussniess. I did inform United but they said they couldn't help me due to the fact I booked through Cheap Tickets. Never again. And I'm spreding the word. I let everyone know at my 50th class reunion

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

The boarding by groups is pointless. The first two groups worked fine, but almost Noone boarded in goups three thru five leaving the vast majority boarding when group six was called. It defeated the purpose of spreading out the crowd.

We loved the steward on the plane. He made the night enjoyable

We are too tired and frustrated to comment politely at this point

The plane was late, when we did board the plane was as cold as a freezer. I was freezing the entire flight, no blankets. Lost miserable flight I’ve ever had.

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

3 hour weather delay followed by 1 hour (and counting) maintenance delay. UGH!

After we'd boarded , they canceled the flight. The crew didn't even know , we just all received text messages. Then after they deplaned us , AA was just like "too bad, go F your self, we sure ain't gonna help you"

After a two hour delay, my flight was CANCELLED! No pilot available. Such BS.

Amazing food, great staff, with one noticable detail missing ...but no seat entertainment in any of aircraft ...I am not a fan

I loved the staff on the plane. So friendly and helpful! However, there was an argument and misunderstanding by the staff and a customer at the gate, and the staff member was being unprofessional. When we arrived in Atlanta, we waited 1.5 hrs for our luggage to arrive. When I asked the airport attendant, they said Frontier had the longest wait for luggage out of any airlines, and that they could not be held responsible for the delay.

Not clean and was told I would get a great seat and it was not great at all

Flight got delayed for 5 hours no good explanation was offered ;(

Horrible. I would never fly Frontier again. The booking process is tricky at best, but fraudulent in my opinion. Frontier customer service did nothing to rectify my purchase -- I ended up paying more than double what I could have gotten from other airlines and nearly triple what I thought I was buying from Frontier. Their booking practices are unfair to the consumer.

Delayed. Text notifications were slow. Not much information o what was happening. Boarding was slow and confusing. Wasn’t even offered water other flight. Had to ask. No entertainment at all. Felt like.a Greyhound bus.

When I wanted to check in 3 hours prior to boarding time, the employees mentioned “a little over an hour delay” so I waited for an hour then I went to go look for food in the terminal and most people from that flight were in the same area looking for food. Finally I decided after food to check to see if it’s anytime closer and now it’s 2 mins until boarding closes?! What are you kidding me? I didn’t receive anything via sms about boarding now nor via email or on the intercom. I luckily made it through, barely, and then there’s no room for my carry on mind you I’m in the very first row so I had to place my purse in one further row back and my carry on sections down. Not sure who pays for better seats to get your stuff placed all over the plane but that was the worst experience I’ve ever had flying with anyone.

Better than expected. Staff were friendly and nice on both flights.

Terrible. The canceled my entire flight when I requested a refund for a trip frontier canceled trip one way.

i was unable to check in the flight. refund requested

Just know that everything, and I mean everything is “ala cart”. 60$ just to put something in the overhead bin. I will never fly Frontier again nor do I recommend them to anyone else.

Everything you need to know for your flight from Chicago to San Diego

Other airlines flying from Chicago to San Diego

Flights from the other most popular airlines that fly from Chicago to San Diego according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.