$139 Cheap Sun Country Airlines flights Chicago (ORD) to San Francisco (SFO)

View $139 flight on Thu, Dec 18, 2025Opens in a new window

$139 Cheap Sun Country Airlines flights Chicago (ORD) to San Francisco (SFO)

Prices were available within the past 7 days and start at $139 for one-way flights and $303 for round trip, for the period specified. Prices and availability are subject to change. Additional terms apply.

Sun Country Airlines
Thu, Dec 18 - Tue, Dec 30
ORD
Chicago
SFO
San Francisco
$303 Roundtrip, found 3 hours ago
$303
Roundtrip
found 3 hours ago
Select Sun Country Airlines flight, departing Thu, Dec 18 from Chicago to San Francisco, returning Tue, Dec 30, priced at $303 found 3 hours ago
Flights from Chicago (ORD) to San Francisco (SFO)
Origin airport
O'Hare Intl.
Destination airport
San Francisco Intl.
Airlines serving
Alaska Airlines, American Airlines, Delta, Frontier Airlines, Hawaiian Airlines, JetBlue Airways, Southwest Airlines, Sun Country Airlines, United
Popular airline
Alaska Airlines
Distance
1842 mi
Average flight time
2 hours 40 mins

Frequently asked questions

How much is a Sun Country Airlines flight from O'Hare Intl. Airport (ORD) to San Francisco Intl. Airport (SFO)?
You can discover cheap round-trip Sun Country Airlines flights from $303 from ORD to SFO by filtering your results from "Price (lowest to highest)" on Expedia. Or search for options from $139 for a one-way trip.**These prices were available on Expedia within the past 7 days, for flights departing within the next year. Prices and availability are subject to change. Additional terms apply.
What is the cheapest month to fly from ORD to SFO with Sun Country Airlines?
Look for one-way or return flights to San Francisco in February or April. You could find lower fares with Sun Country Airlines during these quieter months.
What is the cheapest time to book flights from O'Hare Intl. Airport (ORD) to San Francisco Intl. Airport (SFO) with Sun Country Airlines?
Search for affordable Sun Country Airlines flights from O'Hare Intl. Airport (ORD) to San Francisco Intl. Airport (SFO) one to three months before your departure day. Travelers who book domestic flights 34 to 86 days in advance can save 25% compared to those who book just 6 to 12 days ahead. Regardless of fare class and itinerary, the best day to book a domestic flight is usually Sunday and the most expensive day tends to be Monday. Passengers who book on a Sunday can save 6% on average compared to those who book their travel on a Monday.**Ideal booking window recommendation is based on average round-trip ticket prices for January through November for 2024. Best day of the week to book recommendation is based on average round-trip ticket prices for January through October 2024. All data sourced from ARC's global airline sales database.
Does Sun Country Airlines fly nonstop from O'Hare Intl. Airport (ORD) to San Francisco Intl. Airport (SFO)?
Simply enter your dates, press search and use the "Nonstop" filter on Expedia to browse any direct flights from ORD to SFO with Sun Country Airlines or other airlines.
What is the earliest Sun Country Airlines flight from ORD to SFO?
To find the earliest departures from ORD to SFO with Sun Country Airlines, sort your results by "Early Morning" and "Morning." Choosing an early flight generally means you'll experience fewer cancellations.**Most reliable time of the day recommendation is based on January through August 2024 flight status data sourced from OAG's global flight data platform.
What airports does Sun Country Airlines fly into in San Francisco?
San Francisco Intl. Airport (SFO) is the primary San Francisco gateway for Sun Country Airlines flights from O'Hare Intl. Airport (ORD).
What kind of luggage can I take on a Sun Country Airlines flight from O'Hare Intl. Airport (ORD) to San Francisco Intl. Airport (SFO)?
You're allowed 1 cabin bag weighing up to 33 lb with dimensions not exceeding 23 inches x 10 inches x 15 inches. You may also take a small personal item with you when flying standard economy from ORD to SFO with Sun Country Airlines. Baggage limits can vary by airfare type and cabin class, so check Sun Country Airlines's website to avoid additional fees at the airport.
Why fly with Sun Country Airlines from ORD to SFO?
Offering top-tier customer service and a rewarding loyalty program, Sun Country Airlines is a favorite for many passengers flying from ORD to SFO. Plus, if you're a Sun Country Rewards and One Key™ member booking with Expedia, you could earn OneKeyCash™* on eligible flights on top of your airline miles, which can be put toward future travel.*OneKeyCash™ disclaimer - OneKeyCash™ is not redeemable for cash and can only be used on Expedia, Hotels.com and Vrbo.
Can I change or cancel my Sun Country Airlines flight from O'Hare Intl. Airport (ORD) to San Francisco Intl. Airport (SFO)?
Changes are generally free within 24 hours of booking, but your airline may add a charge after that time. For further information about modifying your flights, check out your "Trips," select your flight and click on "Manage Booking." If you'd like the flexibility to change your itinerary without extra charges, tick the "Changes included" and "No cancel fee" filters when planning your next adventure.

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*Available to One Key members.