Find Cheap Flights from Illinois to San Francisco

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Book cheap flights from Illinois to San Francisco (round-trip)

Airports
Origin
Chicago
$179
only
$179
$254
only
$254
Destination
San Francisco
$179
only
$179
Sat, Apr 21
ORD
SFO
4h 44m
Sun, Apr 29
SFO
ORD
4h 21m
Trip: 9 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 64 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
SFO
Mediocre 3.6

Surprisingly, AA provided the worst experience of the overall itinerary, compared to Aer Lingus and Iberia. The AA plane was outdated, cramped legroom - despite having purchased an "upgraded seat" and departed 1hr late

ORD
SFO
Good 7.3

The snacks are good and the seats are fairly comfortable. The entertainment options were nice too.

But paying $8 for 30 mins of Wi-Fi is just outrageous. I did not, and will not ever pay that much for internet service. Additionally, my bag was asked to be checked at the gate. Mind you, my bag was a Airline Compliant design, that fit into the overhead bin sideways on the same sized plane going out to Chicago. If the flight were full, I would understand them being cautious about space, but the plane was barely over half full. It was just an annoying inconvenience.

ORD
SFO
Okay 4.6

See above

See above

ORD
SFO
Excellent 8.0

Routine flight. No issues on time departure and arrival

Paid extra for exit row seats, felt they were not worth the extra money. The extra legroom was great but the armrest did it move and I felt like I was sitting in a box.

ORD
SFO
Mediocre 3.0

The crew was able to seat my husband and I together at the last minute as my husband has mobility issures

The crew seemed like they could care less about the passengers. Choice of either one snack bag of pretzels or a biscotti ~ very minimal. No headphones were offered for the movies.

Sat, Apr 21
ORD
SFO
4h 44m
Mon, Apr 30
SFO
ORD
8h 45m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Fri, May 4
ORD
SFO
4h 40m
Mon, May 21
SFO
ORD
4h 14m
Trip: 18 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Feb 28
ORD
SFO
19h 26m
Mon, Mar 5
SFO
ORD
20h 17m
Trip: 6 days
4.7OkayShow reviews
Overall 4.7 Okay
Based on 150 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
SFO
Mediocre 3.6

More leg room than comparable airlines.

Charging for bag in the overhead compartment. Sitting on the tarmac after arriving for 40 minutes while waiting for a gate.

ORD
SFO
Mediocre 2.0

Staff was very nice.

Terrible experience...flight delayed by over 3 hours; no one informed Us of the delay when we checked in to get our boarding passes. Luggages took over an hour to come through the baggage claim carousel... only 4 luggage initially came through the fan belt.

ORD
SFO
Mediocre 2.0

An engine went out and the flight was delayed and passengers deplaned. I got to my destination after there were no longer transportation options. No one knew who to send me to for customer service, and they wouldn't offer to help get me home.

ORD
SFO
Mediocre 2.0

im alive

The customer service. I was lied to twice my agents, wasn't give correct information. My last day was wasted away because I was lied to. Spent hours in the airport because of wrong information given. My back hurts from the seats. Using the website was awful.

ORD
SFO
Mediocre 3.6

ORD to/from SFO, both ways the flight was delayed by 4+ hours

Sat, May 26
ORD
SFO
4h 40m
Tue, May 29
SFO
ORD
4h 01m
Trip: 4 days
6.6GoodShow reviews
Overall 6.6 Good
Based on 293 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
ORD
SFO
Mediocre 2.6

Sat on the plane for over 2 hours due to mechanical issues, then there was a medical emergency, then the crew was over their time and had to be replaced, while deplaning there was another medical emergency, finally got in the air 4 + hours later. When flight landed sat on the tarmac for 45 min waiting for a gate! United offered a $50 voucher as compensation. Are you kidding me?!?!?! $50????? You cannot get a customer service person on the phone, they told me it is a "back room department" I had to email and wait to see if/what they will do. Absolutely ridiculous!!!

ORD
SFO
Excellent 10.0

We had to go from DC to ORD then back to GEG. It was out of the way and took much longer than expected. Other than that all went well.

ORD
SFO
Mediocre 3.5

Arrived safely.

Connecting United flight was delayed multiple times and several hours. So typical for United, this seems to happen every time. The booking did not mention United would be the carrier for connecting flight, or I would have booked elsewhere.

ORD
SFO
Good 7.6

1 hour delay at the gate in the plane before we left Chicago, then when we arrived in San Francisco 1 hour on the tarmac waiting for our gate to open..

ORD
SFO
Excellent 8.0

Had a lot of legroom

I ended sitting in a middle seat because I had a basic economy ticket and couldn't choose my seats beforehand

Tue, Apr 17
MDW
SFO
7h 04m
Tue, Apr 24
SFO
MDW
6h 56m
Trip: 8 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16027 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
ECP
ATL
Excellent 9.6

We have been on 6 flights over the last 8 days, all with Delta and we have already started telling people how wonderful the service was. Sherry on this last flight was amazing, working so hard all by herself as our flight attendant. We were very impressed. And the pilots all came out to say goodbye and thank you. All very nice...esp for me who needed some wheelchair assistance. We will certainly fly with you again in the future.

Smaller plane but ok for short flight

DTW
YOW
Excellent 9.3

Please see above. Sherry was amazing

Plane was small and older but it was a short flight

BOS
BNA
Excellent 8.0

Service vey Good. Nice choices. Comfort seating very nice

WiFi awful. Useless.

ATL
MEX
Excellent 10.0

Flight was on time, crew was friendly, plane was clean, and boarding was painless and efficient. Food was served which was a huge plus. I appreciate having a choice of almonds for a snack.

BOS
JFK
Excellent 9.3

The volume controls on the tv we’re pretty poor. Was either too loud or too soft with only 5-6 volume settings.

Wed, Aug 15
ORD
SFO
4h 42m
Sun, Aug 19
SFO
ORD
4h 09m
Trip: 5 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 64 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
SFO
Good 6.6

Good communication

I don't understand why you boarded the flight when it seemed you knew there would be a delay to take off to SFO. We boarded only to learn we would sit at the gate for 30 min and the wait on the tarmac for anothe 40. Why not just delay the flight an board an hour later? It would have been a lot more comfortable in the terminal.

ORD
SFO
Excellent 9.6

Everything went very smoothly and the entertainment was quite good. New movies, international films, and games kept me happy from boarding to landing.

Nothing to complain about really. I thought that the flight attendants did a great job.

ORD
SFO
Excellent 8.3

The row I was in was spacious, I'm glad that I paid extra to move closer to front of plane and then paid extra to get an earlier boarding. I would recommend seat 13C for these types of flights. Legroom was good and I was comfortable.

The entertainment program was a bit glitchy towards the end of my flight, but I slept inside. Maybe check all screens and such because it wasn't really registering when I would push the buttons.

ORD
SFO
Okay 4.6

See above

See above

ORD
SFO
Good 7.3

The snacks are good and the seats are fairly comfortable. The entertainment options were nice too.

But paying $8 for 30 mins of Wi-Fi is just outrageous. I did not, and will not ever pay that much for internet service. Additionally, my bag was asked to be checked at the gate. Mind you, my bag was a Airline Compliant design, that fit into the overhead bin sideways on the same sized plane going out to Chicago. If the flight were full, I would understand them being cautious about space, but the plane was barely over half full. It was just an annoying inconvenience.

Fri, Jun 1
ORD
SFO
4h 43m
Tue, Jun 5
SFO
ORD
4h 20m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews
Tue, Mar 13
ORD
SFO
15h 20m
Mon, Mar 19
SFO
ORD
7h 10m
Trip: 7 days
4.7OkayShow reviews
Overall 4.7 Okay
Based on 150 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
SFO
Mediocre 3.6

ORD to/from SFO, both ways the flight was delayed by 4+ hours

ORD
SFO
Mediocre 3.3

On mobile safari online checkin doesn't work. Customer service reps on phone incredibly cannot check a passenger in. I almost missed flight for this. Most uncomfortable seats I've ever had to sit it for four straight hours. Arm rests are hard plastic, seats don't recline, hard seats too. And it's not cheap despite discomfort

ORD
SFO
Mediocre 2.0

im alive

The customer service. I was lied to twice my agents, wasn't give correct information. My last day was wasted away because I was lied to. Spent hours in the airport because of wrong information given. My back hurts from the seats. Using the website was awful.

ORD
SFO
Mediocre 2.6

The crew.

My first flight was canceled without notice, it was a 1:30AM flight. Had to sleep in the check in area of the airport until we could get our next overpriced tickets that will not be taken care of by their 3 options they give you. This shouldn't have been placed as the cheapest tickets available with out big red warnings that it is only cheap if you have no bags. $40 more would have given me free check in bags and a far better in flight experience on another airline. Spread the word to never fly Frontier.

ORD
SFO
Okay 4.3

None

The flight was delayed 5 hours, and we were offered a $100 voucher that would be emailed to us immediately after the flight takes off. I approached the desk to verify with an employee pre-boarding to ensure I will receive this voucher. She was annoyed with me from the start repeatedly saying it will be emailed after takeoff, which was NOT my question. My question was to verify that the email on file was correct. She had a very hard time getting this to her head. However, it has been over a week and I have yet to receive this voucher. Unless, I receive this voucher I will never recommend this airline.

Fri, Apr 20
ORD
SFO
4h 46m
Fri, Apr 27
SFO
ORD
4h 18m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 64 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
SFO
Good 7.3

The snacks are good and the seats are fairly comfortable. The entertainment options were nice too.

But paying $8 for 30 mins of Wi-Fi is just outrageous. I did not, and will not ever pay that much for internet service. Additionally, my bag was asked to be checked at the gate. Mind you, my bag was a Airline Compliant design, that fit into the overhead bin sideways on the same sized plane going out to Chicago. If the flight were full, I would understand them being cautious about space, but the plane was barely over half full. It was just an annoying inconvenience.

ORD
SFO
Okay 5.6

IFE

Delay 1st leg. Had to rebook to later flight. Later flight delayed. Then delayed again due to crew time out. Arrived 4 hours later than originally scheduled. Meaning public transportation could not be used to get into downtown final destination. Made an originally short trip even shorter.

ORD
SFO
Good 6.6

Good communication

I don't understand why you boarded the flight when it seemed you knew there would be a delay to take off to SFO. We boarded only to learn we would sit at the gate for 30 min and the wait on the tarmac for anothe 40. Why not just delay the flight an board an hour later? It would have been a lot more comfortable in the terminal.

ORD
SFO
Okay 4.6

See above

See above

ORD
SFO
Mediocre 3.6

Quiet flight

Very old plane with zero on board entertainment. Seats in front of exit row barely recline.

Tue, Apr 24
MDW
SFO
8h 16m
Tue, May 1
SFO
MDW
6h 32m
Trip: 8 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16027 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
BOS
JFK
Excellent 9.3

The volume controls on the tv we’re pretty poor. Was either too loud or too soft with only 5-6 volume settings.

DTW
MEX
Excellent 8.3

Even though I was disappointed by not being able to get the boarding passes from Delta for Aeromexico’s connecting flight to Bogota, I had an agent greet me after customs in Mexico to issue the boarding pass so I could use the transfer flight line. Excellent service throughout the entire trip.

Confusion over my boarding pass at the Delta terminal in Detroit.

ECP
ATL
Excellent 9.6

We have been on 6 flights over the last 8 days, all with Delta and we have already started telling people how wonderful the service was. Sherry on this last flight was amazing, working so hard all by herself as our flight attendant. We were very impressed. And the pilots all came out to say goodbye and thank you. All very nice...esp for me who needed some wheelchair assistance. We will certainly fly with you again in the future.

Smaller plane but ok for short flight

BOS
BNA
Excellent 8.0

Service vey Good. Nice choices. Comfort seating very nice

WiFi awful. Useless.

DTW
YOW
Excellent 9.3

Please see above. Sherry was amazing

Plane was small and older but it was a short flight

Wed, Mar 14
ORD
SFO
4h 51m
Wed, Mar 21
SFO
ORD
4h 18m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Mar 17
ORD
SFO
19h 26m
Tue, Mar 20
SFO
ORD
7h 10m
Trip: 4 days
4.7OkayShow reviews
Overall 4.7 Okay
Based on 150 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
SFO
Mediocre 2.6

The crew.

My first flight was canceled without notice, it was a 1:30AM flight. Had to sleep in the check in area of the airport until we could get our next overpriced tickets that will not be taken care of by their 3 options they give you. This shouldn't have been placed as the cheapest tickets available with out big red warnings that it is only cheap if you have no bags. $40 more would have given me free check in bags and a far better in flight experience on another airline. Spread the word to never fly Frontier.

ORD
SFO
Mediocre 3.6

More leg room than comparable airlines.

Charging for bag in the overhead compartment. Sitting on the tarmac after arriving for 40 minutes while waiting for a gate.

ORD
SFO
Mediocre 2.0

An engine went out and the flight was delayed and passengers deplaned. I got to my destination after there were no longer transportation options. No one knew who to send me to for customer service, and they wouldn't offer to help get me home.

ORD
SFO
Mediocre 3.6

ORD to/from SFO, both ways the flight was delayed by 4+ hours

ORD
SFO
Okay 5.0

had to wait around forever until our plane showed up and we were able to board. also i was under the impression that if i paid to check a bag it was a flat fee for my round trip ticket but i had to pay 40$ extra to carry on a bag each way, not worth it

Fri, Aug 17
ORD
SFO
4h 42m
Fri, Aug 24
SFO
ORD
4h 09m
Trip: 8 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 64 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
SFO
Okay 4.6

See above

See above

ORD
SFO
Good 6.6

Good communication

I don't understand why you boarded the flight when it seemed you knew there would be a delay to take off to SFO. We boarded only to learn we would sit at the gate for 30 min and the wait on the tarmac for anothe 40. Why not just delay the flight an board an hour later? It would have been a lot more comfortable in the terminal.

ORD
SFO
Mediocre 3.6

Surprisingly, AA provided the worst experience of the overall itinerary, compared to Aer Lingus and Iberia. The AA plane was outdated, cramped legroom - despite having purchased an "upgraded seat" and departed 1hr late

ORD
SFO
Excellent 8.3

The row I was in was spacious, I'm glad that I paid extra to move closer to front of plane and then paid extra to get an earlier boarding. I would recommend seat 13C for these types of flights. Legroom was good and I was comfortable.

The entertainment program was a bit glitchy towards the end of my flight, but I slept inside. Maybe check all screens and such because it wasn't really registering when I would push the buttons.

ORD
SFO
Good 7.6

Lovely flight, but onboarding groups were a nightmare. Given the chaos, they started forcing bags to be checked early.

Sat, May 5
MDW
SFO
9h 36m
Mon, May 7
SFO
MDW
7h 38m
Trip: 3 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16027 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
BOS
BNA
Excellent 8.0

Service vey Good. Nice choices. Comfort seating very nice

WiFi awful. Useless.

ATL
JNB
Okay 4.0

Aircraft seemed shabby despite refresh of Comfort Plus, food was really mediocre. Steer clear of the Asian Veg option.

BOS
JFK
Excellent 9.3

The volume controls on the tv we’re pretty poor. Was either too loud or too soft with only 5-6 volume settings.

SMF
ATL
Excellent 8.6

The crew were so polite and happy!

Those seats! UGH!

DTW
MEX
Excellent 8.3

Even though I was disappointed by not being able to get the boarding passes from Delta for Aeromexico’s connecting flight to Bogota, I had an agent greet me after customs in Mexico to issue the boarding pass so I could use the transfer flight line. Excellent service throughout the entire trip.

Confusion over my boarding pass at the Delta terminal in Detroit.

Wed, May 2
ORD
SFO
4h 40m
Wed, May 9
SFO
ORD
4h 31m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Thu, Jul 19
ORD
SFO
4h 48m
Sun, Jul 22
SFO
ORD
4h 18m
Trip: 4 days
Overall 0.0 Poor
Based on 0 reviews
Sat, Apr 14
ORD
SFO
4h 44m
Tue, Apr 24
SFO
ORD
4h 21m
Trip: 11 days
7.3GoodShow reviews
Overall 7.3 Good
Based on 64 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
ORD
SFO
Excellent 8.0

Routine flight. No issues on time departure and arrival

Paid extra for exit row seats, felt they were not worth the extra money. The extra legroom was great but the armrest did it move and I felt like I was sitting in a box.

ORD
SFO
Good 7.6

Lovely flight, but onboarding groups were a nightmare. Given the chaos, they started forcing bags to be checked early.

ORD
SFO
Okay 5.6

IFE

Delay 1st leg. Had to rebook to later flight. Later flight delayed. Then delayed again due to crew time out. Arrived 4 hours later than originally scheduled. Meaning public transportation could not be used to get into downtown final destination. Made an originally short trip even shorter.

ORD
SFO
Mediocre 3.6

Quiet flight

Very old plane with zero on board entertainment. Seats in front of exit row barely recline.

ORD
SFO
Excellent 9.6

Everything went very smoothly and the entertainment was quite good. New movies, international films, and games kept me happy from boarding to landing.

Nothing to complain about really. I thought that the flight attendants did a great job.

Tue, Mar 13
MDW
SFO
8h 04m
Tue, Mar 20
SFO
MDW
6h 26m
Trip: 8 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16027 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
ECP
ATL
Excellent 9.6

We have been on 6 flights over the last 8 days, all with Delta and we have already started telling people how wonderful the service was. Sherry on this last flight was amazing, working so hard all by herself as our flight attendant. We were very impressed. And the pilots all came out to say goodbye and thank you. All very nice...esp for me who needed some wheelchair assistance. We will certainly fly with you again in the future.

Smaller plane but ok for short flight

BOS
JFK
Excellent 9.3

The volume controls on the tv we’re pretty poor. Was either too loud or too soft with only 5-6 volume settings.

BOS
ATL
Okay 4.0

Comfort Plus allowed us to board early, useful USB ports.

DTW
YOW
Excellent 9.3

Please see above. Sherry was amazing

Plane was small and older but it was a short flight

DTW
MEX
Excellent 8.3

Even though I was disappointed by not being able to get the boarding passes from Delta for Aeromexico’s connecting flight to Bogota, I had an agent greet me after customs in Mexico to issue the boarding pass so I could use the transfer flight line. Excellent service throughout the entire trip.

Confusion over my boarding pass at the Delta terminal in Detroit.

Thu, May 10
ORD
SFO
8h 19m
Mon, May 14
SFO
ORD
4h 14m
Trip: 5 days
Overall 0.0 Poor
Based on 0 reviews

Illinois to San Francisco Flight Information

Flights Arrive in San Francisco
Flights Depart from Illinois
Flight Price $179
Airlines American Airlines, Major Airline, Frontier, United, Delta
*
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