Cheap flights from San Francisco to Chicago O'Hare Intl Airport from £60
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 15/8. 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.
SFO — ORD
6 Jun — 13 Jun1
Return
1 adult
Economy
Thu 6/6
Thu 13/6
Cheap flight deals from San Francisco to O'Hare Intl
Discover tips and strategies to find the most affordable flight options for your journey from San Francisco (SFO) 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 1 June 2024.
Popular in | June |
|---|---|
Cheapest in | January |
Round-trip from | £435 |
One-way from | £97 |
How far in advance should I book a flight from San Francisco to Chicago O'Hare Intl Airport?
Travelers have found it’s best to book a flight 47 days in advance to save up to 39% compared to booking the same week of travel. As your travel date approaches, the cost of this flight route may potentially increase. While opting to book 47 days out may not be an option for all, there are still additional ways to secure a deal in the near future. You might find a flight from San Francisco to Chicago O'Hare Intl Airport 1-2 weeks in advance for as low as £242, or £352 for flights within the next 24 hours.
What is the cheapest month to fly from San Francisco to Chicago O'Hare Intl Airport?
Due to multiple factors, expect to potentially pay more when booking in March. For low rates, October can be a great choice for travel to Chicago O'Hare Intl Airport. Flights to Chicago O'Hare Intl Airport from San Francisco in October are about £251 on average during October, but can be found for as low as £69.
What is the cheapest time of day to fly from SFO to ORD?
When flying from San Francisco to Chicago O'Hare Intl Airport, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
Cheap Alaska Airlines flights from San Francisco to O'Hare Intl
Explore cheap flight options specifically provided by Alaska Airlines for the route between San Francisco and O'Hare Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 909,873 searches. Data last updated 1 June 2024.
Take a peek at the cheapest Alaska Airlines flights we've detected travelling from San Francisco to Chicago. Make sure to check back often as deals are often changing.
Wed 14/811:07SFO - ORD
Nonstop4h 17mAlaska Airlines
Mon 19/806:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£119
Sat 3/822:54SFO - ORD
Nonstop4h 21mAlaska Airlines
Sat 10/806:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£130
Mon 12/823:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Wed 21/806:00ORD - SFO
1 stop7h 30mAlaska Airlines
Deal found 31/5£137
Mon 12/823:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Fri 16/818:20ORD - SFO
Nonstop4h 40mAlaska Airlines
Deal found 31/5£137
Tue 16/723:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Tue 30/706:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 31/5£141
Mon 19/816:47SFO - ORD
1 stop9h 53mAlaska Airlines
Sat 24/817:25ORD - SFO
Nonstop4h 44mAlaska Airlines
Deal found 1/6£145
Wed 30/1010:27SFO - ORD
Nonstop4h 21mAlaska Airlines
Tue 5/1107:00ORD - SFO
1 stop10h 01mAlaska Airlines
Deal found 1/6£147
Fri 6/909:55SFO - ORD
Nonstop4h 20mAlaska Airlines
Wed 11/908:40ORD - SFO
1 stop10h 00mAlaska Airlines
Deal found 1/6£148
Sat 3/822:54SFO - ORD
Nonstop4h 21mAlaska Airlines
Fri 9/818:20ORD - SFO
Nonstop4h 40mAlaska Airlines
Deal found 1/6£148
Cheap United Airlines flights from San Francisco to O'Hare Intl
Explore cheap flight options specifically provided by United Airlines for the route between San Francisco and O'Hare Intl. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 909,873 searches. Data last updated 1 June 2024.
Take a gander at the lowest prices we've found on United Airlines flights from San Francisco to Chicago. Check back soon if you're not seeing flights that suit your needs.
Wed 28/805:15SFO - ORD
Nonstop4h 22mUnited Airlines
Sun 1/921:05ORD - SFO
Nonstop4h 39mUnited Airlines
Deal found 1/6£200
Mon 12/800:12SFO - ORD
Nonstop4h 18mUnited Airlines
Fri 16/814:30ORD - SFO
Nonstop4h 44mUnited Airlines
Deal found 1/6£208
Mon 12/822:40SFO - ORD
Nonstop4h 16mUnited Airlines
Sat 17/807:10ORD - SFO
1 stop6h 45mUnited Airlines
Deal found 1/6£216
Fri 2/800:12SFO - ORD
Nonstop4h 18mUnited Airlines
Sat 10/806:05ORD - SFO
Nonstop4h 40mUnited Airlines
Deal found 1/6£227
Fri 5/718:30SFO - ORD
Nonstop4h 15mUnited Airlines
Wed 10/705:16ORD - SFO
1 stop6h 23mUnited Airlines
Deal found 1/6£234
Mon 8/700:12SFO - ORD
Nonstop4h 18mUnited Airlines
Wed 17/705:16ORD - SFO
1 stop6h 23mUnited Airlines
Deal found 1/6£249
Wed 14/800:15SFO - ORD
Nonstop4h 15mUnited Airlines
Tue 20/816:50ORD - SFO
Nonstop4h 41mUnited Airlines
Deal found 1/6£251
Tue 13/800:12SFO - ORD
Nonstop4h 18mUnited Airlines
Sun 18/807:10ORD - SFO
Nonstop4h 39mUnited Airlines
Deal found 1/6£255
Mon 8/700:12SFO - ORD
Nonstop4h 18mUnited Airlines
Sun 14/706:05ORD - SFO
Nonstop4h 40mUnited Airlines
Deal found 1/6£262
Cheap San Francisco to O'Hare Intl flights in June & July 2024
Find cheap flight options from San Francisco to O'Hare Intl specifically for the months of June and July 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 909,873 searches. Prices were last updated on 1 June 2024.
These are some of the most attractive deals on flights from San Francisco to Chicago in 2024. Check back soon for alternative fares.
Sat 22/622:54SFO - ORD
Nonstop4h 21mAlaska Airlines
Fri 28/606:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£242
Sat 22/622:54SFO - ORD
Nonstop4h 21mAlaska Airlines
Tue 25/606:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£246
Sat 29/620:36SFO - ORD
1 stop6h 57mFrontier
Sat 6/715:52ORD - SFO
1 stop9h 08mFrontier
Deal found 1/6£249
Sun 23/623:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Fri 28/606:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£266
Sat 29/622:54SFO - ORD
Nonstop4h 21mAlaska Airlines
Tue 2/706:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£269
Sat 29/623:59SFO - ORD
1 stop16h 37mSun Country Air
Tue 2/720:05ORD - SFO
1 stop22h 29mSun Country Air
Deal found 1/6£273
Sat 29/622:54SFO - ORD
Nonstop4h 21mAlaska Airlines
Thu 4/706:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£280
Sun 23/623:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Sat 29/606:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£285
Wed 19/623:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Wed 26/606:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£288
San Francisco to O'Hare Intl 2024 flight deals
Discover exclusive flight deals for travel between San Francisco and O'Hare Intl in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 909,873 searches. Data last updated 1 June 2024.
These are some of the most attractive deals on flights from San Francisco to Chicago in 2024. Check back soon for alternative fares.
Wed 14/811:07SFO - ORD
Nonstop4h 17mAlaska Airlines
Mon 19/806:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£119
Sat 3/822:54SFO - ORD
Nonstop4h 21mAlaska Airlines
Sat 10/806:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£130
Mon 12/823:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Wed 21/806:00ORD - SFO
1 stop7h 30mAlaska Airlines
Deal found 31/5£137
Mon 12/823:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Fri 16/818:20ORD - SFO
Nonstop4h 40mAlaska Airlines
Deal found 31/5£137
Tue 16/723:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Tue 30/706:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 31/5£141
Mon 19/816:47SFO - ORD
1 stop9h 53mAlaska Airlines
Sat 24/817:25ORD - SFO
Nonstop4h 44mAlaska Airlines
Deal found 1/6£145
Wed 30/1010:27SFO - ORD
Nonstop4h 21mAlaska Airlines
Tue 5/1107:00ORD - SFO
1 stop10h 01mAlaska Airlines
Deal found 1/6£147
Fri 6/909:55SFO - ORD
Nonstop4h 20mAlaska Airlines
Tue 10/906:00ORD - SFO
1 stop9h 47mAlaska Airlines
Deal found 1/6£148
Sat 3/822:54SFO - ORD
Nonstop4h 21mAlaska Airlines
Fri 9/818:20ORD - SFO
Nonstop4h 40mAlaska Airlines
Deal found 1/6£148
Direct flights to O'Hare Intl from San Francisco
Discover direct flight options from San Francisco to O'Hare Intl. Find direct flights with no stopovers, providing a convenient travel experience. Explore direct flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 909,873 searches. Data last updated 1 June 2024.
Consider booking one of these non-stop flights heading from San Francisco to Chicago. Select from other flights from San Francisco to Chicago by using the search form above.
Wed 14/811:07SFO - ORD
Nonstop4h 17mAlaska Airlines
Mon 19/806:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£119
Sat 3/822:54SFO - ORD
Nonstop4h 21mAlaska Airlines
Sat 10/806:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£130
Mon 12/823:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Fri 16/818:20ORD - SFO
Nonstop4h 40mAlaska Airlines
Deal found 31/5£137
Tue 16/723:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Tue 30/706:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 31/5£141
Tue 16/723:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Sat 27/706:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 31/5£145
Sat 3/822:54SFO - ORD
Nonstop4h 21mAlaska Airlines
Fri 9/818:20ORD - SFO
Nonstop4h 40mAlaska Airlines
Deal found 1/6£148
Thu 3/1010:27SFO - ORD
Nonstop4h 20mAlaska Airlines
Sat 26/1017:45ORD - SFO
Nonstop4h 43mAlaska Airlines
Deal found 1/6£152
Sun 22/909:55SFO - ORD
Nonstop4h 20mAlaska Airlines
Wed 25/917:25ORD - SFO
Nonstop4h 44mAlaska Airlines
Deal found 1/6£160
Sun 11/823:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Wed 21/817:25ORD - SFO
Nonstop4h 44mAlaska Airlines
Deal found 31/5£165
San Francisco to O'Hare Intl flights leaving soon
Find last-minute flight options from San Francisco to O'Hare Intl for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 909,873 searches. Data last updated 1 June 2024.
Check out these flights departing soon from San Francisco to Chicago. Users should be sure to double check the price, date, and time of their last-minute flight.
Sat 8/623:59SFO - ORD
1 stop17h 31mSun Country Air
Sun 16/621:05ORD - SFO
1 stop13h 13mSun Country Air
Deal found 1/6£350
Sat 8/606:00SFO - ORD
1 stop8h 54mAlaska Airlines
Sun 30/606:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£361
Mon 10/608:00SFO - ORD
2 stops13h 49mAlaska Airlines
Tue 18/615:30ORD - SFO
2 stops17h 56mAlaska Airlines
Deal found 1/6£376
Tue 11/612:50SFO - ORD
2 stops14h 50mAlaska Airlines
Tue 18/614:25ORD - SFO
1 stop19h 28mAlaska Airlines
Deal found 1/6£381
Tue 11/612:50SFO - ORD
2 stops14h 50mAlaska Airlines
Tue 18/617:50ORD - SFO
2 stops18h 24mAlaska Airlines
Deal found 1/6£384
Mon 10/619:55SFO - ORD
1 stop6h 45mAlaska Airlines
Mon 24/606:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£387
Sat 8/609:55SFO - ORD
Nonstop4h 29mAlaska Airlines
Sun 30/606:35ORD - SFO
Nonstop4h 37mAlaska Airlines
Deal found 1/6£403
Mon 10/616:55SFO - ORD
1 stop9h 45mAlaska Airlines
Wed 12/606:00ORD - SFO
2 stops18h 42mAlaska Airlines
Deal found 31/5£411
Mon 10/614:14SFO - ORD
2 stops12h 26mAlaska Airlines
Wed 12/606:00ORD - SFO
2 stops18h 42mAlaska Airlines
Deal found 31/5£415
One-way flights to O'Hare Intl from San Francisco
Search for one-way flight options from San Francisco to O'Hare Intl. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 909,873 searches. Data last updated 1 June 2024.
If you're seeking multiple options on one-way flights from San Francisco to Chicago, be sure to check out these deals, which are updated often. Those needing a return flight from San Francisco to Chicago can use the search form above.
Thu 15/823:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Deal found 31/5£60
Wed 17/723:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Deal found 31/5£71
Wed 10/719:55SFO - ORD
1 stop7h 20mAlaska Airlines
Deal found 1/6£78
Fri 2/823:59SFO - ORD
Nonstop4h 21mAlaska Airlines
Deal found 31/5£79
Tue 29/1014:28SFO - ORD
1 stop7h 31mAlaska Airlines
Deal found 31/5£82
Mon 5/819:55SFO - ORD
1 stop7h 20mAlaska Airlines
Deal found 31/5£86
Wed 6/1114:07SFO - ORD
1 stop13h 21mAlaska Airlines
Deal found 1/6£86
Fri 12/700:46SFO - ORD
1 stop5h 58mDelta
Deal found 31/5£93
Mon 14/1010:27SFO - ORD
Nonstop4h 20mAlaska Airlines
Deal found 31/5£93
Find flights from San Francisco to O'Hare Intl within your budget
Customise your flight search to find flights from San Francisco 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 909,873 searches. Data last updated 1 June 2024.
Fly from
Any airport
Fly to
Any airport
Budget
£119 - £319
Route
Depart
Return
Price
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Wed 14/8
Nonstop4h 21m
Chicago O'Hare Intl
Thu 22/8
Nonstop4h 44m
£119
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Sat 3/8
Nonstop4h 21m
Chicago O'Hare Intl
Sat 10/8
Nonstop4h 37m
£130
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Mon 12/8
Nonstop4h 21m
Chicago O'Hare Intl
Wed 21/8
1 stop7h 30m
£137
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Mon 12/8
Nonstop4h 21m
Chicago O'Hare Intl
Fri 16/8
Nonstop4h 40m
£137
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Tue 16/7
Nonstop4h 21m
Chicago O'Hare Intl
Tue 30/7
Nonstop4h 37m
£141
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Fri 23/8
1 stop7h 18m
Chicago O'Hare Intl
Sat 24/8
1 stop7h 16m
£185
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Wed 28/8
Nonstop4h 22m
Chicago O'Hare Intl
Sun 1/9
Nonstop4h 39m
£200
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Fri 12/7
1 stop18h 40m
Chicago O'Hare Intl
Mon 15/7
1 stop17h 06m
£241
San FranciscoChicago O'Hare Intl
SFO - ORD
SFOORD
San Francisco
Fri 28/6
1 stop13h 24m
Chicago O'Hare Intl
Sat 6/7
1 stop9h 08m
£319
How far ahead should I book a flight from San Francisco to Chicago O'Hare Intl Airport?
Use this chart to determine the optimal time to book a return flight from San Francisco to O'Hare Intl. Price data was last updated on 24 May 2024.
The best time to book flights from San Francisco to Chicago O'Hare Intl Airport is 85 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Best time to book a flight from San Francisco to O'Hare Intl
Have a flexible travel schedule? Discover the best time to fly to O'Hare Intl from San Francisco with our price prediction graph.
Estimated return 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.
Temperature and rainfall in O'Hare Intl by month
Plan your trip to O'Hare Intl by taking into account the average temperature and rainfall totals by month.
CHI Temperature | -5 - 23 °C |
|---|
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 1 June 2024.
See what other customers who have flown with Alaska Airlines, United Airlines and Delta from San Francisco to Chicago have to say. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
9,198 reviews
Boarding
8.2
Crew
8.6
Comfort
7.9
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
9,198 reviews
9,198 reviews
Boarding
8.2
Crew
8.6
Comfort
7.9
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
10,410 reviews
9,198 reviews
Boarding
8.2
Crew
8.6
Comfort
7.9
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
10,754 reviews
9,198 reviews
Boarding
8.2
Crew
8.6
Comfort
7.9
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
14,268 reviews
9,198 reviews
Boarding
8.2
Crew
8.6
Comfort
7.9
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
592 reviews
9,198 reviews
Boarding
8.2
Crew
8.6
Comfort
7.9
Food
7.3
Overall
8.1
Entertainment
7.3
Reviews
1 / 10
Paid a lot for our exit row seats and they weren’t that roomy.
Related info for your journey
Find useful and relevant information for your journey from San Francisco 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.
Browse thousands of different options on Cheapflights for your next trip
Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.
Alternative routes for San Francisco to O'Hare IntlSee prices for flight routes from nearby airports that may be better suited for you.
See prices for flight routes from nearby airports that may be better suited for you.
Search flights from San Francisco to O'Hare Intl by cabin class
Find flights from San Francisco to O'Hare Intl, based on your preferred cabin class, be it economy, premium economy, business, or first class.
Hourly flight availability from San Francisco to O'Hare Intl
Find hourly flight availability from San Francisco 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 1 June 2024.
| 23%of flight departures | Early morningMidnight to 6 am |
|---|---|
| 37%of flight departures | Morning6 am to noon |
| 17%of flight departures | AfternoonNoon to 6 pm |
| 23%of flight departures | Evening6 pm to midnight |
Midnight
6 AM
Midday
6 PM
Weekly flight availability from San Francisco to O'Hare Intl
Explore weekly flight availability from San Francisco to O'Hare Intl. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated 1 June 2024.
| Monday | 63daily flights |
|---|---|
| Tuesday | 58daily flights |
| Wednesday | 55daily flights |
| Thursday | 58daily flights |
| Friday | 62daily flights |
| Saturday | 48daily flights |
| Sunday | 58daily flights |
Book a flight to one of these trending destinations
User searches for flights to these destinations increased 20% or more in the past 90 days compared to other destinations
Fly with Cheapflights
Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.
How does Cheapflights help users find flights from San Francisco to O'Hare Intl?
Deals for San Francisco to O'Hare Intl flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.
Why should you use Cheapflights to find cheap flight tickets from San Francisco to O'Hare Intl?
Millions of users choose and trust Cheapflights to book the best flight deals from San Francisco to O'Hare Intl for free. We help you search and compare prices from hundreds of airlines for the right flight just for you.
Can Cheapflights find flights from San Francisco to O'Hare Intl with no change fees?
Yes, we can. To see specific flights from San Francisco to O'Hare Intl with no change fees, users can toggle flexible booking options after using the search form above to find flights.
Can Cheapflights notify me if prices for flights from San Francisco to O'Hare Intl become cheaper?
Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!