$79+ 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 5/5. Fares are subject to change and may not be available on all flights or dates of travel.
SAN — ORD
Mar 10 — Mar 171
1 adult, Economy
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Find cheap flights from San Diego to O'Hare Intl with Cheapflights
1. Tell us where you want to go
Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”2. Select your favorite providers
We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.3. Compare prices and book
Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.Cheapflights Tip: The best prices from San Diego to Chicago O'Hare Intl are usually found in September or October, booked 72 days in advance, depart on a Thursday or Friday and return on a Saturday
Cheap flight deals from San Diego to O'Hare Intl
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Best
Last-minute
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Cheapest flights from San Diego to O'Hare IntlExplore 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 February 8, 2026.
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 February 8, 2026.
This American Airlines deal was found by Cheapflights users on 2/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/46:20 am
SAN
- ORD
Nonstop4h 19m
American Airlines
Wed 3/188:06 pm
ORD
- SAN
Nonstop4h 34m
American Airlines
Deal found 2/4![American Airlines logo]()
$161
This Kiwi.com deal was found by Cheapflights users on 2/5. 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.
Mon 4/206:55 am
SAN
- ORD
1 stop15h 57m
Frontier
Sat 4/258:43 am
ORD
- SAN
1 stop7h 42m
Frontier
Deal found 2/5![Frontier logo]()
$162
This Kiwi.com deal was found by Cheapflights users on 2/4. 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.
Sat 4/186:35 pm
SAN
- ORD
1 stop8h 56m
Multiple Airlines
Tue 4/219:18 pm
ORD
- SAN
1 stop18h 34m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$163
This Kiwi.com deal was found by Cheapflights users on 2/4. 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.
Sun 3/159:18 pm
SAN
- ORD
1 stop25h 39m
Frontier
Mon 4/62:29 pm
ORD
- SAN
1 stop11h 33m
Frontier
Deal found 2/4![Frontier logo]()
$164
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Fri 2/276:25 am
SAN
- ORD
2 stops26h 26m
Frontier
Tue 3/107:00 am
ORD
- SAN
1 stop9h 31m
Frontier
Deal found 2/7![Frontier logo]()
$165
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Thu 2/266:25 am
SAN
- ORD
1 stop6h 29m
Frontier
Tue 3/107:00 am
ORD
- SAN
1 stop9h 31m
Frontier
Deal found 2/7![Frontier logo]()
$166
This Alaska Airlines deal was found by Cheapflights users on 2/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 2/275:42 pm
SAN
- ORD
Nonstop4h 17m
Alaska Airlines
Tue 3/103:07 pm
ORD
- SAN
Nonstop4h 45m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$167
This American Airlines deal was found by Cheapflights users on 2/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 3/1510:35 pm
SAN
- ORD
Nonstop4h 04m
American Airlines
Wed 3/188:06 pm
ORD
- SAN
Nonstop4h 34m
American Airlines
Deal found 2/3![American Airlines logo]()
$168
This Kiwi.com deal was found by Cheapflights users on 2/3. 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.
Tue 3/173:16 pm
SAN
- ORD
1 stop22h 43m
Multiple Airlines
Tue 3/244:51 pm
ORD
- SAN
2 stops30h 23m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$169
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Sat 3/79:18 pm
SAN
- ORD
1 stop9h 25m
Frontier
Wed 3/114:28 pm
ORD
- SAN
2 stops27h 10m
Frontier
Deal found 2/7![Frontier logo]()
$170
This SmartFares deal was found by Cheapflights users on 2/4. 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 SmartFares is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/215:42 pm
SAN
- ORD
Nonstop4h 17m
Hawaiian Airlines
Tue 3/33:07 pm
ORD
- SAN
Nonstop4h 45m
Hawaiian Airlines
Deal found 2/4![Hawaiian Airlines logo]()
$171
This Kiwi.com deal was found by Cheapflights users on 2/4. 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.
Wed 4/152:47 pm
SAN
- ORD
1 stop12h 44m
Multiple Airlines
Sun 4/1910:55 am
ORD
- SAN
1 stop15h 06m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$172
Best flights from San Diego to O'Hare IntlDiscover carefully curated flight deals from San Diego to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 8, 2026.
Discover carefully curated flight deals from San Diego to O'Hare Intl that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated February 8, 2026.
This United Airlines deal was found by Cheapflights users on 2/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/115:00 pm
SAN
- ORD
Nonstop3h 59m
United Airlines
Mon 3/167:05 am
ORD
- SAN
Nonstop4h 42m
United Airlines
Deal found 2/6![United Airlines logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 2/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 4/1412:15 pm
SAN
- ORD
Nonstop4h 25m
Alaska Airlines
Thu 4/237:59 pm
ORD
- SAN
Nonstop4h 43m
Alaska Airlines
Deal found 2/4![Alaska Airlines logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 2/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:42 pm
SAN
- ORD
Nonstop4h 17m
Alaska Airlines
Tue 4/78:20 am
ORD
- SAN
Nonstop4h 42m
Alaska Airlines
Deal found 2/4![Alaska Airlines logo]()
$167
This United Airlines deal was found by Cheapflights users on 2/3. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/1510:30 pm
SAN
- ORD
Nonstop4h 05m
United Airlines
Mon 4/208:20 pm
ORD
- SAN
Nonstop4h 39m
United Airlines
Deal found 2/3![United Airlines logo]()
$167
This Alaska Airlines deal was found by Cheapflights users on 2/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/165:38 pm
SAN
- ORD
Nonstop4h 21m
Alaska Airlines
Sat 4/253:52 pm
ORD
- SAN
Nonstop4h 39m
Alaska Airlines
Deal found 2/4![Alaska Airlines logo]()
$167
This United Airlines deal was found by Cheapflights users on 2/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 3/610:30 pm
SAN
- ORD
Nonstop3h 59m
United Airlines
Fri 3/137:05 am
ORD
- SAN
Nonstop4h 42m
United Airlines
Deal found 2/6![United Airlines logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 2/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/105:42 pm
SAN
- ORD
Nonstop4h 17m
Alaska Airlines
Wed 3/184:10 pm
ORD
- SAN
Nonstop4h 45m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$177
This Alaska Airlines deal was found by Cheapflights users on 2/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 3/45:42 pm
SAN
- ORD
Nonstop4h 17m
Alaska Airlines
Wed 3/184:10 pm
ORD
- SAN
Nonstop4h 45m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$177
This United Airlines deal was found by Cheapflights users on 2/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 4/810:30 pm
SAN
- ORD
Nonstop4h 05m
United Airlines
Mon 4/132:40 pm
ORD
- SAN
1 stop7h 32m
United Airlines
Deal found 2/6![United Airlines logo]()
$197
This Alaska Airlines deal was found by Cheapflights users on 2/4. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sun 4/197:55 am
SAN
- ORD
Nonstop4h 26m
Alaska Airlines
Sat 4/253:52 pm
ORD
- SAN
Nonstop4h 39m
Alaska Airlines
Deal found 2/4![Alaska Airlines logo]()
$187
This Alaska Airlines deal was found by Cheapflights users on 2/6. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 3/125:42 pm
SAN
- ORD
Nonstop4h 17m
Alaska Airlines
Wed 3/184:10 pm
ORD
- SAN
Nonstop4h 45m
Alaska Airlines
Deal found 2/6![Alaska Airlines logo]()
$187
Last-minute flights from San Diego to O'Hare IntlDiscover last-minute flight deals from San Diego to O'Hare Intl. Data last updated February 8, 2026 and is based on user searches.
Discover last-minute flight deals from San Diego to O'Hare Intl. Data last updated February 8, 2026 and is based on user searches.
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Thu 2/122:38 pm
SAN
- ORD
1 stop24h 48m
Multiple Airlines
Wed 2/257:00 am
ORD
- SAN
2 stops32h 43m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$274
This Travelocity deal was found by Cheapflights users on 2/4. 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.
Sat 2/148:00 am
SAN
- ORD
1 stop6h 53m
Multiple Airlines
Tue 3/108:20 am
ORD
- SAN
Nonstop4h 49m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$200
This Super.com deal was found by Cheapflights users on 2/4. 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 Super.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/148:00 am
SAN
- ORD
1 stop6h 53m
Frontier
Tue 3/107:00 am
ORD
- SAN
1 stop9h 31m
Frontier
Deal found 2/4![Frontier logo]()
$211
This Expedia deal was found by Cheapflights users on 2/4. 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.
Sat 2/148:00 am
SAN
- ORD
1 stop6h 53m
Multiple Airlines
Thu 4/27:59 pm
ORD
- SAN
Nonstop4h 42m
Multiple Airlines
Deal found 2/4![Multiple Airlines logo]()
$230
This Travelocity deal was found by Cheapflights users on 2/3. 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.
Sat 2/148:00 am
SAN
- ORD
1 stop6h 53m
Multiple Airlines
Tue 2/173:07 pm
ORD
- SAN
Nonstop4h 45m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$232
This Travelocity deal was found by Cheapflights users on 2/4. 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.
Sat 2/145:42 pm
SAN
- ORD
Nonstop4h 17m
Alaska Airlines
Tue 3/108:20 am
ORD
- SAN
Nonstop4h 49m
Alaska Airlines
Deal found 2/4![Alaska Airlines logo]()
$287
This United Airlines deal was found by Cheapflights users on 2/4. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 2/1410:59 am
SAN
- ORD
Nonstop4h 06m
United Airlines
Thu 4/27:00 am
ORD
- SAN
Nonstop4h 40m
United Airlines
Deal found 2/4![United Airlines logo]()
$297
This American Airlines deal was found by Cheapflights users on 2/3. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1710:35 pm
SAN
- ORD
Nonstop4h 04m
American Airlines
Sun 2/225:49 pm
ORD
- SAN
Nonstop4h 31m
American Airlines
Deal found 2/3![American Airlines logo]()
$263
This American Airlines deal was found by Cheapflights users on 2/4. 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 American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/1710:35 pm
SAN
- ORD
Nonstop4h 04m
American Airlines
Tue 2/2411:54 am
ORD
- SAN
Nonstop4h 35m
American Airlines
Deal found 2/4![American Airlines logo]()
$280
This eDestinos deal was found by Cheapflights users on 2/3. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/178:00 am
SAN
- ORD
2 stops29h 52m
Frontier
Sun 2/2212:56 pm
ORD
- SAN
1 stop29h 08m
Frontier
Deal found 2/3![Frontier logo]()
$294
This eDestinos deal was found by Cheapflights users on 2/3. 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 eDestinos is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 2/175:42 pm
SAN
- ORD
Nonstop4h 17m
Multiple Airlines
Sun 2/2212:56 pm
ORD
- SAN
1 stop29h 08m
Multiple Airlines
Deal found 2/3![Multiple Airlines logo]()
$299
One-way flights from San Diego to O'Hare IntlSearch for one-way flight options from San Diego to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated February 8, 2026.
Search for one-way flight options from San Diego to O'Hare Intl. Find affordable one-way fares based on user searches. Data last updated February 8, 2026.
This Alaska Airlines deal was found by Cheapflights users on 2/5. 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 Alaska Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 5/512:53 pm
SAN
- ORD
Nonstop4h 10m
Alaska Airlines
Deal found 2/5![Alaska Airlines logo]()
$79
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Mon 3/99:18 pm
SAN
- ORD
2 stops33h 05m
Frontier
Deal found 2/7![Frontier logo]()
$80
This Trip.com deal was found by Cheapflights users on 2/7. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 4/179:07 pm
SAN
- ORD
1 stop7h 40m
Frontier
Deal found 2/7![Frontier logo]()
$83
This United Airlines deal was found by Cheapflights users on 2/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 3/37:50 pm
SAN
- ORD
1 stop7h 22m
United Airlines
Deal found 2/7![United Airlines logo]()
$84
This Trip.com deal was found by Cheapflights users on 2/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Sat 3/149:18 pm
SAN
- ORD
1 stop10h 25m
Frontier
Deal found 2/6![Frontier logo]()
$86
This Kiwi.com deal was found by Cheapflights users on 2/7. 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.
Thu 3/56:25 am
SAN
- ORD
1 stop6h 29m
Frontier
Deal found 2/7![Frontier logo]()
$87
This United Airlines deal was found by Cheapflights users on 2/7. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/910:30 pm
SAN
- ORD
Nonstop4h 05m
United Airlines
Deal found 2/7![United Airlines logo]()
$89
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Sat 5/26:35 pm
SAN
- ORD
1 stop8h 56m
Multiple Airlines
Deal found 2/6![Multiple Airlines logo]()
$90
This Trip.com deal was found by Cheapflights users on 2/6. 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 Trip.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 2/266:25 am
SAN
- ORD
1 stop29h 00m
Frontier
Deal found 2/6![Frontier logo]()
$91
This United Airlines deal was found by Cheapflights users on 2/6. 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 United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 5/17:40 pm
SAN
- ORD
1 stop7h 45m
United Airlines
Deal found 2/6![United Airlines logo]()
$94
This Priceline deal was found by Cheapflights users on 2/7. 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 Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 4/309:07 pm
SAN
- ORD
1 stop7h 40m
Frontier
Deal found 2/7![Frontier logo]()
$95
This Kiwi.com deal was found by Cheapflights users on 2/6. 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.
Thu 5/73:20 pm
SAN
- ORD
1 stop23h 33m
Frontier
Deal found 2/6![Frontier logo]()
$96
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 February 8, 2026.
Most accurate provider | FlightHub 3 stars |
|---|---|
Most trusted provider | FlightHub 3 stars |
Round-trip from | $161 (American Airlines) |
One-way from | $79 (Alaska Airlines) |
Popular in | April |
Cheapest in | September |
Average price | $277 |
Good round-trip deal | $254 or less |
Good one-way deal | $135 or less |
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 February 8, 2026.
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
Wed 3/11
5:00 pm-10:59 pm
Nonstop3h 59m
Chicago O'Hare Intl
Mon 3/16
7:05 am-9:47 am
Nonstop4h 42m
$167
San DiegoChicago
SAN - ORD
SANORD
San Diego
Tue 4/14
12:15 pm-6:40 pm
Nonstop4h 25m
Chicago O'Hare Intl
Thu 4/23
7:59 pm-10:42 pm
Nonstop4h 43m
$167
San DiegoChicago
SAN - ORD
SANORD
San Diego
Thu 3/12
5:42 pm-11:59 pm
Nonstop4h 17m
Chicago O'Hare Intl
Tue 4/7
8:20 am-11:02 am
Nonstop4h 42m
$167
San DiegoChicago
SAN - ORD
SANORD
San Diego
Wed 4/15
10:30 pm-4:35 am
Nonstop4h 05m
Chicago O'Hare Intl
Mon 4/20
8:20 pm-10:59 pm
Nonstop4h 39m
$167
San DiegoChicago
SAN - ORD
SANORD
San Diego
Thu 4/16
5:38 pm-11:59 pm
Nonstop4h 21m
Chicago O'Hare Intl
Sat 4/25
3:52 pm-6:31 pm
Nonstop4h 39m
$167
San DiegoChicago
SAN - ORD
SANORD
San Diego
Fri 3/6
10:30 pm-4:29 am
Nonstop3h 59m
Chicago O'Hare Intl
Fri 3/13
7:05 am-9:47 am
Nonstop4h 42m
$177
San DiegoChicago
SAN - ORD
SANORD
San Diego
Tue 3/10
5:42 pm-11:59 pm
Nonstop4h 17m
Chicago O'Hare Intl
Wed 3/18
4:10 pm-6:55 pm
Nonstop4h 45m
$177
San DiegoChicago
SAN - ORD
SANORD
San Diego
Wed 3/4
5:42 pm-11:59 pm
Nonstop4h 17m
Chicago O'Hare Intl
Wed 3/18
4:10 pm-6:55 pm
Nonstop4h 45m
$177
San DiegoChicago
SAN - ORD
SANORD
San Diego
Sun 4/19
7:55 am-2:21 pm
Nonstop4h 26m
Chicago O'Hare Intl
Sat 4/25
3:52 pm-6:31 pm
Nonstop4h 39m
$187
San DiegoChicago
SAN - ORD
SANORD
San Diego
Thu 3/12
5:42 pm-11:59 pm
Nonstop4h 17m
Chicago O'Hare Intl
Wed 3/18
4:10 pm-6:55 pm
Nonstop4h 45m
$187
Showing 1-10 of 22 results
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 February.
| Provider | Price Accuracy | Trust Score* |
|---|---|---|
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy2 stars | Trust Score*2 stars | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy- | Trust Score*1 star | |
| Price Accuracy1 star | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars | |
| Price Accuracy3 stars | Trust Score*3 stars |
- Most accurate provider: When it comes to deals on San Diego-Chicago O'Hare Intl Airport flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on San Diego-Chicago O'Hare Intl Airport flight deals on Cheapflights vs. FlightHub >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 FlightHub the most. FlightHub 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.
SAN-ORD
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
Prices
Delays
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 January 30, 2026.
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 $96). Flying from San Diego to Chicago O'Hare Intl Airport in November is currently the most expensive (average of $165). 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 February 8, 2026.
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 45% 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 February 7, 2026.
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.
How often are flights from San Diego to Chicago delayed?
About 10% of weekly flights between San Diego and Chicago have experienced delays in the past year, with the average delay time being 174 minutes.
What is the most punctual flight time for San Diego to Chicago flights?
Historically, flights departing at night are less likely to be delayed, whereas flights leaving in the evening tend to experience delays more often.
What day of the week experiences the fewest flight delays on this route?
Tuesday tends to have the lowest number of delays on this route, whereas Sunday has historically faced a higher average of delays compared to other days of the week.
Which airline has the best punctuality record on San Diego to Chicago flights?
Over the last year, United Airlines have had the lowest number of delays on this route, with just 7% of flights being delayed.
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
Our travel experts
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 February 8, 2026.
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.
Boarding
8.1
Crew
8.5
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Crew
8.5
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Crew
8.5
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Crew
8.5
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Crew
8.5
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
Boarding
8.1
Crew
8.5
Food
7.1
Comfort
7.8
Entertainment
7.0
Overall
8.0
Reviews
1 / 20
10.0
ExcellentAnonymous,Jan 2026
STS - LAX
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.
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 locationsSchaumburg
Rosemont
Naperville
Gurnee
Elgin
Hoffman Estates
Beloit
Delavan
Oak Brook
Des Plaines
Downers Grove
Elk Grove Village
Skokie
Libertyville
Lake Geneva
Waukegan
Bridgeview
Kenosha
Warrenville
Aurora
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Other flights to O'Hare Intl
Explore flights to O'Hare Intl departing from other origins. Flights are based on user searches made on Cheapflights and were last updated on February 8, 2026.
San Diego and O'Hare Intl flights
Browse other San Diego and O'Hare Intl flight options. Last updated on February 8, 2026.
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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 February 8, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$92 | Average$183 | FlexibilityNo cancel fee | On-time65% | |
| Cheapest$111 | Average$196 | FlexibilityNo cancel fee | On-time62% | |
| Cheapest$138 | Average$263 | FlexibilityNo cancel fee | On-time75% | |
| Cheapest$139 | Average$197 | FlexibilityNo cancel fee | On-time85% | |
| Cheapest$158 | Average$340 | FlexibilityNo cancel fee | On-time71% | |
| Cheapest$174 | Average$373 | FlexibilityNo cancel fee | On-time69% | |
| Cheapest$236 | Average$305 | FlexibilityNo cancel fee | On-timeN/A |