Find Cheap Flights from San Francisco to Illinois

Cons: No tv

Cons: did not like that Frontier charged $$ for seat selection before check in at the airport. There was no option for seat selection at $0. All options cost $$ - or you had to wait till airport check in.

Cons: Canceled after asking us to stay for eight hours and already got onboard

Cons: Apparently the seats are "pre-reclined". What a joke! My gf and I now call this Frontier Airplanes, because this can't be an airline.

Cons: seats are incredibly tight

Pros: Wonderful leg room & reclining in Economy Plus

Cons: I was seated in the 2nd row from the front of Economy cabin, which is close to the door of the plane. The flight attendant explained that this was why it was so chilly. The blanket provided was very thin & light weight & not large enough to cover legs & upper body.

Cons: 5 hours delay

Cons: items missing from an outer pocket of my checked suitcase which was absolutely closed when it was given to baggage originally. Airport absolutely useless when I explained the problem.

Cons: The flight was more than 4 hours late making us miss our connections

Cons: No sandwiches for sale just snack boxes

Pros: Crew is always friendly

Cons: Aircraft broke, had to route me to an additional three stops just to get me home and through the night. Also, still unsure of where my checked baggage is.

Pros: The crew did their best to deal with delay.

Cons: There was an absolutely awful job done by both Delta and Kayak of informing us if additional delays, new gate assignments, when the plane would be reboarded. Also, people were quite angry that the plane had to be cleaned between the time we got off and the time we reboarded. Just get us home.

Pros: Everything ran according to schedule. Everyone was professional and nice.

Cons: I wish all families with young children could always pre-board; that was not the case on this flight. The gate agent “let” us board with Group 4, which was at least something. No tv screens on these seats. And I really don’t like the full-volume pitch for the AA credit card. They’re trying to take advantage of a captive audience, and no one likes it.

Pros: Lots on in-flight entertainment.

Cons: Nothing, I pretty much just slept the whole time.

Pros: seat was basic. prefer having tv screens in the seatbacks as opposed to using my tiny phone as a viewing screen.

Cons: prefer having tv screens in the seatbacks as opposed to using my tiny phone as a viewing screen. only food available besides pretzel was pay food.

Cons: Four and a half hours on board and just a cookie? Really!?

Pros: Crew was so helpful and nice!

Cons: Better entertainment options and food options

Cons: Flight was delayed

Pros: Seat didn’t stay in reclined position and didn’t recline all the way. No foot rest. Ridiculous for first class. Delayed flight. Almost no food. Bizarre entertainment system. They couldn’t find my frequent flier number to add it to my trip.

Cons: See above

Cons: Flight delayed. Delayed. Delayed. Seat changed without notice. Flight attendants were a bit rude.

Pros: Boarding was easy.

Cons: all economy seats are in a fixed position and do not recline. In order to get a seat that reclines you have to upgrade for an additional $50 per seat. Non-reclining seats are OK for short hops but are extremely uncomfortable for long hauls.

Pros: Where prompt with the wheel chair, and very helpful. on time!!

Pros: Nothing.

Cons: Paying to sit next to my husband, delayed, got in late and had to sit there for another 45 minutes so instead of getting off at 7:30 it was about 10:00. Crew was rude and pushy and the tray tables were half the size of normal airplane tables.

Pros: Overall great flight.

Cons: Unfortunately, the flight was delayed for an hour and 14minutes, and when waiting for baggage for over an hour to come out.

Cons: I've flown 13 different airlines in the last 6 months (including budget carriers) and united was the poorest value. You pay a high price and there are no amenities-you even have to pay for tv. The boarding process was the least time efficient I've seen. The boarding groups are not based on row numbers? Lots of backups on jet bridge and plane aisles.

Pros: Wide body jet on a domestic route has a wider cabin.

Cons: Seat was uncomfortable, no PTV entertainment, you have to stream from the wi-fi using united app, but you have to pay for wifi to download it.

Pros: Every thing about it except for snacks Wish there was a meal from sfo to ohare

Cons: The piolets ability

Pros: This United flight left on time and arrived to my destination early, which was nice, unlike my last flight.

Cons: Wi-Fi and “private screen” entertainment through my own devices did not work. Second time it has not worked at all on a United flight. Food was average (meaning bare-bones for complimentary).

Pros: Crew was very congenial, upbeat, and accommodating. As there were several rows with no passengers, the crew offered me a seat in an empty row for my comfort and it was most appreciated

Cons: Nothing I can think of.

Pros: Safe and fast journey.

Cons: Vegan Options for snacks

Pros: The flight attendants were excellent, pleasant, and professional.

Cons: The video system went down for a period of time.

Pros: Pilot and staff were informative and great

Cons: I was forced to upgrade to first class by Air France stuff in Athens which they Deceive me not telling me that the first class was not for the entire trip to JFK! If I was informed I would not spend the extra money to flight on an economy “seat” which was not comfy seats for the entire trip

Pros: The fact that it was a large 777! Those just feel safer.

Pros: Everything

Cons: None

Pros: Crew was great and took care of my carry-on as all the space near my seat was full, so she brought it back to the front and stowed it for me.

Cons: Seats were small, as typically horrible on flights these days. In-flight movies are normally free over a 5 hour flight, but that didnt seem to be the case, not a bad thing as overnight everyone slept, however my screen was unable to shut off so we had to cover it with a blanket to block the light.

Cons: THE FLIGHT WAS DELAYED OVER 2 HRS. FINALLY, WHEN WE CAN BOARD, WE WAITED AT LEAST 1 HOUR MORE. VERY DISAPPOINTING.

Pros: Plenty of drink passes.

Cons: The staff was rude. Over heard gossiping about other travelers. At end of flight overhead announcement that our section of airplane using wrong bathrooms. It was rudely stated. Should have directed this instruction earlier in the flight. Very rude

Pros: Should have booked AA instead of BA.

Cons: AA couldn't find BA reservation. poor integration of services

Pros: Plane was on time. Free check of carry-on.

Cons: Seats are too cramped and extra cost for better seating sucks.

Pros: AA is stepping there game up when it comes to entertainment. Newer planes have power surges, consistent wifi, and screens in the back of each seat loaded with games and movies.

Cons: My flight was delayed prolonging my trip. Customer service was terrible. And, when I got to my final destination my checked luggage wasn't there. It took them over 24 hours to locate and return my luggage.

Cons: Boarding can be little more faster

Cons: Flight was delayed

Pros: All good with Alaska and Virgin America

Pros: Person next to me was pleasant.

Cons: Seats hard and uncomfortable, head rests didn't go up. Plane did appear to be new.

Pros: The gate agents and flight crew were very accommodating.

Cons: I was extremely annoyed that TSA Pre-Check was unavailable at Terminal 2 at 8:15am. This is unacceptable and not the TSA's fault. I fault the airline for this oversight. Delta needs to communicate better to the passengers if there is a possibility of this service being unavailable at an airport.

Pros: Comfortable (only) because lots of empty seats.

Pros: Nothing I couldn’t get this flight because of the delay of the previous one

Cons: The company could have hold it knowing there were travellers on connection. If not, knowing that they were no flight before the next day they could have prepare hotel booking for us because all hotels were full at midnight when we finally could get there.

Pros: Nothing three hours late I went to dc and then took the train

Pros: Flight was mostly uneventful, which is great! Right after takeoff we made a complete circle and no information was given as to why, but we assumed it was air traffic.

Cons: Middle seat. Big guys dont fit well there

Pros: Good on flight entertainment

Cons: Tried to select my seat 2 weeks out from flight. Was told by multiple delta employees I can only change at the gate. Was unable to change seat and ended up getting downgraded to middle seat middle row. Rude flight staff that barked at the passengers

Pros: Good food and beverage.

Cons: Cabin did not was clean and had very bad odor. Entertainment system is old and was inactive some minutes during the trip.

Pros: Confortable seating and updated seats. Attentive flight attendants Power in every seats

Cons: No IFE , snack for purchase

Pros: Telephone support was very good. Gate crew did what they could but United keeps them overloaded with very little discretion to actually do anything.

Cons: Flight delayed due to mechanical problems for four hours.

Pros: *They offered a few snacks (small bags of cookies and water) during our 2 and a half hour delay. *Staff was friendly.

Cons: *Over two hour delay * No organization between the three boarding classes (3,4 and 5) so people just pushed to the front and stood in the way. *Overhead bin space was limited. *The inflight entertainment never worked.

Pros: I had a good amount of time between each flight, every plane was waiting at the gate when I arrived, every flight arrived early.

Cons: A drink other than water would be nice (like soda)

Pros: The flight was relaxing and easy

Cons: Entertainment

Pros: I survived!

Cons: Disruptive passenger should have been removed! The flight was delayed 2 hours.

Cons: Seats are VERY uncomfortable. Staff is not really friendly. First time on Frontier, I will try to avoid it if I can

Pros: The entire flight was excellent, on time, great friendly crew, edible food, movies and options were great, perfect in every way. It was a little chaotic at flight loading on extra security, but I assume it could have something to do with it being on 9/11 and it was ultimately bound for NYC.

Cons: I honestly cannot think of anything.

Pros: Crew was friendly

Cons: The boarding process was rough and haphazard

Cons: Aircraft was too warm. Needed more air!

Pros: The flight attendant (age gentleman) with the quite sense of humor, and converse with a measure of ease. A role model for others, a nice aptitude than one can learn from.

Cons: Just keep up the good work and always work towards self development. Treat others the way you would like to be treated, with respect.

Pros: Nothing

Cons: Terribly uncomfortable seats

Cons: Flight was delayed over paid for seats

Cons: Slow baggage check. Dirty seats that don’t recline. And a far too long credit card advertisement coming through speakers so loud my ears were ringing. Never using Frontier again.

Pros: The crew was great, the chairs are uncomfortable.

Cons: For the price it’s great.

Pros: The plane was brand new!

Cons: Every time my husband and I fly our seats get changed from our original picks. I make sure the tickets are linked and they still move us. Very irritating not sitting together especially when you take the time to ensure it doesn't happen.

Cons: Great flight. We were delayed but the crew kept us well informed and tried to make up time in the air

Cons: No sandwiches for sale just snack boxes

Pros: Crew was very congenial, upbeat, and accommodating. As there were several rows with no passengers, the crew offered me a seat in an empty row for my comfort and it was most appreciated

Cons: Nothing I can think of.

Cons: Seat was very hard and uncomfortable

Pros: The crew seemed nice, they allowed me to board early.

Cons: There was no entertainment because the system was not working in our area.

Pros: Great crew.

Cons: No deberían cojerse los artículos personales de los pasajeros

Pros: I enjoyed that boarding was fairly quick and the tickets were cheap.

Cons: the seats were cramped, the tray table is so small it can barely fit a drink, and they wanted to charge $30 for a carry on!!!! I find that completely insane, especially since it's only $25 for a checked bag! you even have to pay for water!!! flight was delayed an hour

Pros: Flight time changed to 20 mins earlier with plenty of notice. Checked in 24 hours in advance and got exit row seats with lots of leg room. Seats in new plane are comfortable an don't need to recline even for me who likes sleeping for most of the trip. Flight attendants sit in the xist rows with the passengers during take off and landing, which made it much more personal a feeling; friendly & helpful crew. Must have had a tail wind because arrived about 20 minutes earlier than expected. Price was excellent; about half as compared to AA or UA.

Cons: No window in exit seat rows, but that was OK with me because I like to sleep most of the way. Extra charges for everything, but they are minimal if you check in online 24 hours in advance. Still price, ended up being half of other airlines.

Pros: The flight arrived 40 minutes early.

Cons: I paid $40 for a carry on. The plane was not pressurized, I've never had my ears hurt to bad on a plane.

Pros: Flight was good and landing smooth.

Cons: No beverages or snacks were offered. The flight was a late night flight and there was no where refreshments or beverages could be purchased, hence I was forced to fast for 6 hours.