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O'Hare Intl

$84+ Cheap flights from San Diego (SAN) to O'Hare Intl (ORD)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 2/18. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ORD
ene. 22 — ene. 291
jue. 1/22
jue. 1/29
1 adult, Economy
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1. Tell us where you want to go

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Cheapflights Tip: The best prices from San Diego to Chicago O'Hare Intl are usually found in October or September, booked 72 days in advance, depart on a Thursday or Wednesday and return on a Friday

Cheap flight deals from San Diego to O'Hare Intl

Cheapest flights from San Diego to O'Hare Intl
Explore the most affordable flight options available from San Diego to O'Hare Intl. Find the lowest fares from popular airlines and budget airlines, with prices last updated on diciembre 23, 2025.

This Kiwi.com deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/3110:57 amSAN - ORD
2 stops11h 15mMultiple Airlines
mié. 1/77:57 pmORD - SAN
1 stop19h 32mMultiple Airlines
Deal found 12/22$241
This CheapOair deal was found by Cheapflights users on 12/23. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/316:25 amSAN - ORD
1 stop15h 47mFrontier
jue. 1/17:00 amORD - SAN
1 stop18h 59mFrontier
Deal found 12/23$254
This Expedia deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 12/296:25 amSAN - ORD
1 stop15h 47mFrontier
mié. 12/317:00 amORD - SAN
1 stop18h 59mFrontier
Deal found 12/22$257
This Expedia deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Expedia is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/316:25 amSAN - ORD
1 stop15h 47mFrontier
sáb. 1/37:00 amORD - SAN
1 stop18h 59mFrontier
Deal found 12/22$282
This CheapOair deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 12/316:25 amSAN - ORD
1 stop15h 47mFrontier
dom. 1/410:49 pmORD - SAN
1 stop15h 49mFrontier
Deal found 12/22$283
This Kiwi.com deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mar. 12/309:14 pmSAN - ORD
2 stops24h 58mFrontier
dom. 1/410:49 pmORD - SAN
1 stop15h 49mFrontier
Deal found 12/22$311
This Travelocity deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Travelocity is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 12/277:21 pmSAN - ORD
1 stop24h 18mFrontier
mié. 12/317:00 amORD - SAN
1 stop18h 59mFrontier
Deal found 12/22$312
This CheapOair deal was found by Cheapflights users on 12/22. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure CheapOair is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 12/266:25 amSAN - ORD
1 stop15h 47mFrontier
mié. 12/317:00 amORD - SAN
1 stop18h 59mFrontier
Deal found 12/22$313

Find flight deals from San Diego to O'Hare Intl

Discover tips and strategies to find the most affordable flight options for your journey from San Diego (SAN) to O'Hare Intl (ORD). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated diciembre 23, 2025.

Most accurate provider

CheapOair
3 stars

Most trusted provider

CheapOair
3 stars

Round-trip from

$154
(Kiwi.com)

One-way from

$84
(United Airlines)

Popular in

March

Cheapest in

October

Average price

$304

Good round-trip deal

$313 or less

Good one-way deal

$168 or less
Provider with most accurate pricing for San Diego-Chicago O'Hare Intl flight deals.
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Provider most trusted by Cheapflights users for San Diego-Chicago O'Hare Intl flights.
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From San Diego to Chicago O'Hare Intl
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One-way flight from San Diego to Chicago O'Hare Intl
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Highest demand for flights based on searches. 19% potential increase in price ($80 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 3% potential price decrease ($12 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in December 2025
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Price to beat on a round-trip flight from San Diego to Chicago O'Hare Intl.
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Price to beat on a one-way flight from San Diego to Chicago O'Hare Intl.
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Cheapflights Fare Finder

 
Customize your flight search to find flights from San Diego to O'Hare Intl that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 23, 2025.
Use the filters below to find and compare flights from San Diego to Chicago O'Hare Intl Airport that are best for you.

Fly from

San Diego

Fly to

O'Hare Intl

Route

Depart

Return

Price

San DiegoChicago

SAN - ORD

SANORD

San Diego

mié. 2/18

8:35 am-2:58 pm

Nonstop4h 23m

Chicago O'Hare Intl

mié. 2/25

8:20 am-11:09 am

Nonstop4h 49m

$157

San DiegoChicago

SAN - ORD

SANORD

San Diego

mié. 1/14

5:10 pm-11:37 pm

Nonstop4h 27m

Chicago O'Hare Intl

dom. 1/18

3:44 pm-6:26 pm

Nonstop4h 42m

$157

San DiegoChicago

SAN - ORD

SANORD

San Diego

sáb. 2/14

8:35 am-2:58 pm

Nonstop4h 23m

Chicago O'Hare Intl

mar. 2/17

3:07 pm-5:52 pm

Nonstop4h 45m

$157

San DiegoChicago

SAN - ORD

SANORD

San Diego

sáb. 1/17

8:00 am-2:29 pm

Nonstop4h 29m

Chicago O'Hare Intl

mié. 1/21

3:44 pm-6:26 pm

Nonstop4h 42m

$157

San DiegoChicago

SAN - ORD

SANORD

San Diego

mié. 3/4

5:42 pm-11:59 pm

Nonstop4h 17m

Chicago O'Hare Intl

mié. 3/11

7:40 am-10:29 am

Nonstop4h 49m

$157

San DiegoChicago

SAN - ORD

SANORD

San Diego

lun. 1/12

8:00 am-2:29 pm

Nonstop4h 29m

Chicago O'Hare Intl

mar. 1/13

3:44 pm-6:26 pm

Nonstop4h 42m

$167

San DiegoChicago

SAN - ORD

SANORD

San Diego

jue. 1/15

5:10 pm-11:37 pm

Nonstop4h 27m

Chicago O'Hare Intl

dom. 1/18

9:00 am-11:43 am

Nonstop4h 43m

$167

San DiegoChicago

SAN - ORD

SANORD

San Diego

lun. 1/12

8:00 am-2:29 pm

Nonstop4h 29m

Chicago O'Hare Intl

sáb. 1/17

3:44 pm-6:26 pm

Nonstop4h 42m

$167

San DiegoChicago

SAN - ORD

SANORD

San Diego

mar. 1/20

8:00 am-2:29 pm

Nonstop4h 29m

Chicago O'Hare Intl

lun. 1/26

9:00 am-11:43 am

Nonstop4h 43m

$167

San DiegoChicago

SAN - ORD

SANORD

San Diego

mié. 1/21

8:00 am-2:29 pm

Nonstop4h 29m

Chicago O'Hare Intl

lun. 1/26

3:44 pm-6:26 pm

Nonstop4h 42m

$167

Flights are sorted by cheapest round-trip flights first.

Deals found on 12/23

Showing 1-10 of 21 results
1
2
3

Compare providers for flights from San Diego to O'Hare Intl

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from San Diego to O'Hare Intl in December.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy2 starsTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*1 star
eDreamsPrice Accuracy3 starsTrust Score*3 stars
CheapflightsfaresPrice Accuracy3 starsTrust Score*2 stars
JustAirTicketPrice Accuracy-Trust Score*1 star
CheapOairPrice Accuracy3 starsTrust Score*3 stars
PricelinePrice Accuracy1 starTrust Score*3 stars
CheapfaremartPrice Accuracy-Trust Score*1 star
Justfly.comPrice Accuracy3 starsTrust Score*3 stars
MytripPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on San Diego-Chicago O'Hare Intl Airport flights, users find the pricing of CheapOair to be most consistent on Cheapflights vs. CheapOair Users can find the same prices on San Diego-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. CheapOair >95% of the time. Price accuracy is based on data collected from San Diego-Chicago O'Hare Intl Airport flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on San Diego-Chicago O'Hare Intl Airport flights, Cheapflights users trust CheapOair the most. CheapOair has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for San Diego-Chicago O'Hare Intl Airport flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from San Diego to O'Hare Intl

Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from San Diego with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from San Diego to Chicago O'Hare Intl Airport

How far ahead should I book a flight from San Diego to Chicago O'Hare Intl Airport?

Use this chart to determine the optimal time to book a round-trip flight from San Diego to O'Hare Intl. Price data was last updated on December 19, 2025.

To ensure you get the cheapest price possible for a flight from San Diego to Chicago O'Hare Intl Airport, you should look to book at least 72 days in advance of your intended travel date. The price of your flight may increase if you delay and leave booking until a week or so before departure.

What is the cheapest month to book a flight from San Diego to Chicago O'Hare Intl Airport?

Currently, February is the cheapest month in which you can book a flight from San Diego to Chicago O'Hare Intl Airport (average of $91). Flying from San Diego to Chicago O'Hare Intl Airport in May is currently the most expensive (average of $179). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from SAN to ORD?

Find hourly flight availability from San Diego to O'Hare Intl. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated diciembre 23, 2025.

It’s typically best to fly out from San Diego to Chicago O'Hare Intl Airport in the afternoon. Doing so could potentially save you 47% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from San Diego to Chicago O'Hare Intl Airport?

Use this chart to determine the cheapest time to fly round-trip from San Diego to O'Hare Intl. Price data was last updated on December 20, 2025.

Travelers seeking maximum savings on their San Diego to Chicago O'Hare Intl Airport flight should consider departing on Wednesday afternoons when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

The best insider tips for San Diego to Chicago O'Hare Intl Airport flights

AI-powered summary based on content written by travel experts. AI can make mistakes.
Cheapflights partnered with top experts to bring you the best recommendations for your San Diego to Chicago O'Hare Intl Airport trip
Airports
SAN

Plan to arrive at SAN at least two hours early, especially during peak times, to avoid stress from traffic congestion.

Read more about SANBy Blane Bachelor
ORD

For a quick city connection from ORD, consider taking the 'L' train, which efficiently links the airport to downtown Chicago.

Read more about ORDBy Ramsey Qubein
Our travel experts
Ramsey Qubein

Ramsey Qubein

Expert on ORD

Ramsey Qubein

Ramsey Qubein

An avid traveler and aviation expert who has visited 173 countries, all 50 states and seven continents, Ramsey Qubein flies nearly 400,000 miles a year. As a North Carolina-based freelance journalist for publications including Conde Nast Traveler, Forbes, USA Today and Bloomberg among others, he explores the latest trends in aviation, hospitality, cruises and business.

Read more
Blane Bachelor

Blane Bachelor

Expert on SAN

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

Reviews of airlines servicing O'Hare Intl

Get insights into the airlines that provide service to O'Hare Intl. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to O'Hare Intl. Reviews last updated diciembre 23, 2025.
Read through reviews of airlines operating flights from San Diego to Chicago O'Hare Intl Airport, such as Alaska Airlines, United Airlines, and American Airlines. Reviews also offer insight into each airline's entertainment options, comfort, food, crew/service, and boarding process.
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Alaska Airlines
8.0
Very good
11,512 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
United Airlines
7.4
Good
9,105 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
American Airlines
7.2
Good
11,054 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Spirit Airlines
6.3
Okay
8,196 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.
Frontier
5.8
Fair
3,075 reviews
Alaska Airlines
8.0
Very good
11,512 reviews

Boarding

8.1

Crew

8.5

Comfort

7.8

Food

7.1

Overall

8.0

Entertainment

7.0

Reviews

1 / 20
2.0
Mediocre

Art,Dec 2025

SAN - OGG

It was a five hour flight and my seat did not recline. I have had three back surgeries and I’m solid bone for my L3 vertebrae all the way to my tailbone. My body has never hurt so much. There was no TV on this flight and only a small can of soda was free.

Related info for your journey

Find useful and relevant information for your journey from San Diego to O'Hare Intl. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from San Diego to Chicago O'Hare Intl?

    For a flight from San Diego to Chicago O'Hare Intl, you will be flying from San Diego. San Diego (SAN) is just 2.6 mi from the center of the city. San Diego is the only San Diego airport and it handles 30 outbound flights to Chicago O'Hare Intl per day. 7 airlines have flights to Chicago O'Hare Intl from San Diego on a regular basis.

  • How long is the flight from San Diego to Chicago O'Hare Intl Airport?

    Departing from San Diego to Chicago O'Hare Intl Airport will take you 4h 23m. Airlines will cover a distance of 1719 mi. All flights are typically nonstop.

  • What are the cheapest airlines flying from San Diego to Chicago O'Hare Intl Airport round-trip?

    According to our current data, Spirit Airlines ($98), Frontier ($113), and Alaska Airlines ($138) offers the cheapest pricing from San Diego to Chicago O'Hare Intl Airport. Spirit Airlines is currently priced 70% below the average price you’ll pay for this route.

  • What are the cheapest airlines to fly from San Diego to Chicago O'Hare Intl Airport one-way?

    One-way options have recently been found by users for as low as $45 on Spirit Airlines. Other airlines that offer cheap prices include Frontier from $61 and Southwest from $62 one-way.

  • What are the most reliable airlines from San Diego to Chicago O'Hare Intl Airport?

    Consider Cathay Pacific (93%), Austrian Airlines (91%) or Iberia (87%) when booking your flight. These represent the most reliable airlines when flying from San Diego to Chicago O'Hare Intl Airport.

  • What are the cheapest flights from San Diego to Chicago O'Hare Intl Airport?

    Looking for the cheapest flight from San Diego to Chicago O'Hare Intl Airport? While on average our users pay $856, our data indicates the cheapest price to be $83. The most popular route (San Diego - Chicago O'Hare Intl), is priced around $141.

  • Can I find deals for flights from San Diego to O'Hare Intl that include hotel bookings?

    Yes. In addition to deals on San Diego to O'Hare Intl flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from San Diego to O'Hare Intl?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from San Diego to O'Hare Intl.

  • Can I find deals for business class flights from San Diego to O'Hare Intl?

    Yes. Cheapflights offers flight deals from San Diego to O'Hare Intl by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from San Diego to Chicago O'Hare Intl Airport?

    Currently, February is the cheapest month in which you can book a flight from San Diego to Chicago O'Hare Intl Airport (average of $91). Flying from San Diego to Chicago O'Hare Intl Airport in May is currently the most expensive (average of $179). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near Chicago O'Hare Intl Airport?

Book flights to Chicago O'Hare Intl Airport if you plan to visit one of these locations
Schaumburg
Rosemont
Gurnee
Elgin
Naperville
Hoffman Estates
Beloit
Delavan
Oak Brook
Downers Grove
Des Plaines
Elk Grove Village
Skokie
Lake Geneva
Bridgeview
Kenosha
Warrenville
Waukegan
Aurora
Evanston

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Alternative routes for San Diego to O'Hare Intl

See prices for flight routes from nearby airports that may be better suited for you.
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Top 7 airlines flying from San Diego to O'Hare Intl

Discover the top 7 airlines that operate flights from San Diego to O'Hare Intl. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated diciembre 23, 2025.
AirlineCheapestAverageFlexibilityOn-time
Spirit AirlinesCheapest$99Average$181FlexibilityNo cancel feeOn-time65%
FrontierCheapest$119Average$197FlexibilityNo cancel feeOn-time62%
Alaska AirlinesCheapest$139Average$262FlexibilityNo cancel feeOn-time75%
Hawaiian AirlinesCheapest$139Average$197FlexibilityNo cancel feeOn-time85%
American AirlinesCheapest$166Average$354FlexibilityNo cancel feeOn-time71%
United AirlinesCheapest$178Average$387FlexibilityNo cancel feeOn-time69%
DeltaCheapest$256Average$368FlexibilityNo cancel feeOn-timeN/A

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