Find cheap flights from Cancún to San Francisco

CUN - SFO

Find cheap flights from Cancún to San Francisco

Round-trip
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Cancún (CUN)
San Francisco
Wed 12/2
Wed 12/9
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Good to know

Low season

September Best time to beat the crowds with an average 26% drop in price.

High season

June Most popular time to fly with an average 21% increase in price.

Average price round-trip

$488 (avg. price over the last 2 weeks)

Good deal round-trip

$457 or less

Good deal one-way

$316 or less

When to book flights from Cancún to San Francisco

Estimated round-trip price
Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $316 or less one-way and $457 or less round-trip.
  • The cheapest flight from Cancún to San Francisco was found 0 days before departure, on average.
  • Book at least 1 week before departure in order to get a below-average price.
  • High season is considered to be May, June and July. The cheapest month to fly is September.
  • Morning departure is around 20% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking flights from Cancún to San Francisco

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Top 3 airlines serving Cancún to San Francisco

Scores according to KAYAK customer reviews

7.9
Delta
Overall score based on 28,802 reviews
8.1
Boarding
7.8
Comfort
8.5
Crew
7.8
Entertainment
7.5
Food
Airline reviews

Cons: "We weren't alerted there was a chance of delays. Over two hours late."

Pros: "Having three seats."
Cons: "I had three seats to myself! After getting elbowed all the way from Amsterdam to Minneapolis, I was tired and I slept three good hours."

Cons: "Sat on the runway for over an hour to get the gate. Unacceptable."

Pros: "Very orderly."

Pros: "Didnt expect dinner but was served"
Cons: "Delayed flight, offset entertainment, touch screen un responsive"

Pros: "Personality and charm of the flight attendants made it an especially relaxing trip."

Cons: "Delayed take off and waited for the bridgr"

Pros: "Seats were comfortable ... enough. Boarding process, once underway allowed me to get overhead bin and stash my other luggage in the seat below me. Flight wasn't overly booked (85-95%) so there appeared to be room for others to stretch out. Now about that crying kid..."
Cons: "Ugh. Weather delays. The flight was scheduled to board about 7P but it arrived late and they had to not only unload the self-loading cargo, but clean up afterwards. Would be nice to get a better estimate as to how long it would take to board so that I could hang out in the lounge. In addition, departure from JFK was delayed as well, either we missed the IFR window or got stuck behind some traffic and I fell asleep on the plane only to wake up what seemed an hour later just getting ready to hit V1. No upgrade."

Pros: "Quick and easy flight. Took about an hour and twenty minutes."

Pros: "Maintained high standards of service despite massive delay."
Cons: "Boarding and departure was messy because of the delay"

Pros: "Very nice and friendly crew were very efficient."
Cons: "Very nice and friendly crew were very efficient. Unfortunately, we had to wait over 20 minutes to get into our gate because another plane was there, so we arrived late. Not DELTA's fault."

Cons: "Delayed for an hour and fifteen minutes"

Pros: "The crew on Delta create a welcome atmosphere every time I have flown with them."

Pros: "The entertainment options and noticing the little touches that Delta is making to improve the brand and experience."
Cons: "Seems like there are legacy "attitude" issues with the crew. I sat on the aisle yesterday, and SEVERAL times I was bumped, quite rudely, by passing crew. In one instance, as they passed to pick up trash, they took two of my three items. They started walking on, and I tapped them as they passed to pick up the third. She brusquely turned and said: don't touch me to get my attention. No please; quite rude, and unnecessary."

Cons: "The fact that booking with kayak wouldn't let me pick my seats and traveling with 2 kids under 4 it made it very stressful trying to figure out how we could sit together or even the same end of the plane."

Cons: "Horrible wait if nearly 30 minutes after landing"

Pros: "The boarding was efficient"
Cons: "Three hour departure delay. No explanation given. No apology."

Cons: "Flight was delayed for very 4 hrs sat in plane for 2.5 of those. Flight was delayed dye to strike in Barcelona. But replacement plane had fueling problems delaying the flight another 2 hours"

Pros: "Entertainment system"
Cons: "Crew lacked any customer centricity, service was poor"

Cons: "Boarding process was horrible, it was first class, priority, zone 1 and then all other zone. There was no order. Flight was delayed. Had a 3 hour delay on the tarmac!"

Pros: "I love Delta. Smooth boarding. Quality service. Keep it up!"

Cons: "Zero communication to the passengers as to why we were delayed for almost an hour sitting on the plane"

Pros: "Nice plane."
Cons: "No in flight TV."

Pros: "entertainment services"
Cons: "legroom"

Pros: "Fantastic SFO-based crew serving Delta One cabin. They are attentive, and constantly walk around the cabin to provide service."
Cons: "Delay at JFK (first, the inbound aircraft coming late, then 2.5 hrs taxing at JFK, finally landed in SFO but the gate was occupied)."

Pros: "Excellent video selection, Sweetwater 420, cookies were good. Landed 20 minutes early."
Cons: "Boarded 20 minutes late. Very very cold. Bathroom horribly disgusting. Coffee too cold."

Pros: "They arrived on schedule."
Cons: "Seated in the rear middle seat. I had no options to select a seat when I checked in or made my reservation that wasn't an extra charge. I'mover 6' tall and middle seats are painful, especially cross country. Airlines need to be a little more attentive to their customers' needs. If a passenger is taller than average, and the flight is more than 60 minutes, provide comfortable seating at no extra charge. If a customer has a short layover, which their system knows about since it is the sourve of the flight plans, put the customer toward the front of the aircraft since these flights are habitually late and customers end up having to sprint through airports to try to make connections."

Pros: "We took off and landed early. The crew was wonderful and the snacks were exactly what I needed."
Cons: "We landed early and were stuck waiting on the plane for an hour and fifteen minutes for a gate to open."

Pros: "COURTESY"

Cons: "Delayed four hours"

Pros: "Flight attendants"
Cons: "Tv wouldn't work and delay that wasn't weather related and the food was awful"

Cons: "My email read check into Aeromexico I could not check in the Aeromexico using my phone I was dropped off at the Aeromexico terminal after standing in line for half an hour I find I was in the wrong terminal I needed to be in a different terminal with Delta because Aeromexico even on my reservation read that does not fly to Tampa. I had to find a shuttle to another terminal the shuttlesare not marked it was very confusing"

Cons: "Flight was delayed over an hour resulting missing connecting flight"

Pros: "Crew was polite"
Cons: "Rocky takeoff"

Cons: "No TVs for int'l flight, disorganized and chaotic boarding process, limited snack options"

Pros: "I didn't like anything about this flight. Only benefit of the doubt is the 2 hour delay as a runway in SF had shut down."
Cons: "We had seats at first where there was what looked like bubble gum bits stuck on one of the food trays. The flight was clearly not cleaned although it landed 2+ hours before the departure. We had to ask for a wet tissue and clean it up. That was of no use too as it wouldn't scrub off. My wife was feeling under the weather and so we asked for a blanket. The blanket was hardly a blanket and more like a towel. We then luckily could switch seats as there were 2 vacant. But, the air conditioner was leaking water in the seat to our left. The crew was callous and just stuck the passenger with some napkins saying it does that. I don't fly Delta a lot and my experience in this trip isn't inspiring much confidence."

Pros: "Both flights were on-time, no gate changes. Staff was friendly enough, and seat back entertainment was appreciated. Everything went as you always hope it does for flights!"

Pros: "On time departure, clean plane, competent and professional flight attendants, pilot announcements were clear and relevant"
Cons: "Check in took forever. Delta reservations made some type of mistake when they cancelled our flight to CUN and I needed to rebook the flight. It took the CUN counter agent about 30 minutes to correct their mistake. Then, as we boarded our flight, the bar code reader at the gate indicated another error that the gate agent took about 10 minutes to correct. CUN Delta staff was great and we appreciated the efforts they made to direct us around the airport."

Pros: "Delta treats diamond medallion members better than any other airlines treats their elite members"
Cons: "No in seat entertainment"

Pros: "I liked the free in-flight entertainment - movies, music, HBO, etc. That was very nice and helped the flight fly by"

Cons: "They should have separate lanes on boarding like United. Then people can line up in the appropriate group."

Pros: "Some entertaining choices but not all clear which ones were in my flight"
Cons: "The food I wanted had sold out by the time I ordered it"

Cons: "I did not like being assigned to a seat that did not recline at all and was given no up front warning so it was a very unwelcome surprise at the start of my 6+ hour flight."

Cons: "Spent 90 minutes on the plane before it even took off."

Pros: "The flight attendants were friendly and efficient."
Cons: "The flight was over two hours late because of winds in San Francisco."

Cons: "I got very cold during the flight, the ac was so cold that I had to stay in my winter jacket and a hood."

Pros: "Have not flown Delta for some time and was very impressed. Definitely would fly again."

Pros: "Boarding was smooth. Service was friendly."

Cons: "flight delayed due to rechnical problem"

Cons: "Wasn't allowed to board because my sister is autistic traveling with her service dog. This had been the worst experience ever. We feel discriminated for something that is outside our control . This is unacceptable."

Pros: "Movie selection was excellent. The package of peanuts was pretty small."
Cons: "package of peanuts was very very small. I think for a flight of that length, a larger snack would be appropriate"

Cons: "Our flight from Cancun to Tijuana would not let us on the plane because we went to get something to eat after we had checked in and the Stuart at the gate said we were too late to board when we still had 35 minutes before the plane was scheduled to take off"

Pros: "The crew was just ok, they did not extend themselves to make the customer feel comfortable/safe."
Cons: "The seat on the flight are too small the average person does not fit comfortable."

Cons: "Boarding process. The Zone lines are formed a very long time before boarding really begins. Why?"

Pros: "Comfortable seats and staff are very nice"

Pros: "Being served a delicious glass of orange juice during taxi to takeoff."
Cons: "Entertainment center was broken on my friends and my seats and Classe Premier was full so we couldn’t move. Sandwich was “bacon” but there was almost nothing in between white bread."

Pros: "On plane entertainment was great, along with the charger port for phones. Leg room was great, seats comfortable and even served free breakfast and gave complimentary headphones. Very nice trip."

Pros: "Good flight"
Cons: "It was going to be a 45 mins delay, turned out to be 1 1/2hrs"

Pros: "They kept close to schedule."
Cons: "The division of lines with the passeengers."

Pros: "Customer service"
Cons: "No tv"

Pros: "We boarded fast and we arrived on time"
Cons: "I requested a "Fragile" label for my suitcase. They said they ran out of them. When I came back home, they had break 2 memories. One of them from the conference I taught. I tried to wrap them as tight as possible. I am aware of the risks of carrying fragile things but I can't stop thinking that the label might had helped avoiding things getting break. Flight Attendance were not very friendly. They were not rude but defiantly not friendly"

Cons: "Not organized enough. Had to rush to second flight because 1st flight was delayed"

Cons: "The signage for flight gates should be more timely. Some flight gates were not posted until minutes before scheduled departure times."

Pros: "Everything but the screaming babies was great."

Cons: "El vuelo fue cancelado y se tardo 5 horas en salir. Nos hicieron dormir en las bancas del aeropuerto sin indemnizacion!"

Cons: "The flight attendent gave my seat away and placed me in a seat where the tv was broke. The. Later I was ignored when I tried to ask for water."

Pros: "Aeromexico keeps impressing me! The professionalism is great. The timing and ease of boarding was perfect. And the leg room and on-board accommodations make it a comfortable journey. Definitely now among my list of favorite airlines!"

Pros: "Nothing"
Cons: "Poor signage, lack of good food restaurants, the over all quality has gone downhill since the 80's and 90's when I would eagerly look forwards to flying to Mexico."

Pros: "Friendly, efficient crew, good entertainment system and content."
Cons: "Food was pretty mediocre. I'd prefer to pay a few dollars extra for a better meal."

Pros: "Sf to Mexico was fine"
Cons: "Lost my immigration form and missed my flight. Airline told me to talk to my booking agent. I spent time talking to justfly and it took them a long time to tell me they couldn’t do anything and I’m stuck in Mexico for a day."

Cons: "Horrible service. Connecting flight ran late causing me to miss my connection to San Francisco and the "connection desk supervisor" blamed me for his companies short comings and tried to charge me $500 to re-book. Ha, I wouldn't give AeroMexico another cent. Garbage establishment, can't believe Kayak does business with such a low end partner."

Pros: "The stewardesses were hotties with very cute outfits. The chars were fairly comfortable and spacious."

Pros: "The crew appeared to be working very hard to meet passenger requests. They were polite and pleasant even though the flight was packed."
Cons: "Seats WAY too close together. Very uncomfortable."

Cons: "They did not refund money as I didnt take flight. I request for cancelling a week before"

Pros: "very helpful flight attendant crew"

Pros: "The only positive factor about this specific flight was the staff who is very diligent and attentive to everyone."
Cons: "Once we got on the plane, the pilot mentions there is a delay due to the AC not functioning but they are fixing it. We took off and the AC apparently was never fixed because it was out for the whole flight. On top of that there was basically no entertainment on flight. Those two things are basic when flying."

Pros: "Entertainment. Every seat had their own tv."
Cons: "Turbulence."

Pros: "My husband's knees were pressed against the seat in front of him so much so as to cause indentations in his legs. fortunately the flight wasn't full and we were able to spread out over 3 seats. It was still quite an uncomfortable flight for him."

Pros: "The comfort of the flight was outstanding. Spacious, nice temperature, and good movie selections."
Cons: "The boarding process wasn't the greatest. They only had 2 or 3 kiosks available for bag check-ins but they had 3 international flights all around the same time. The line was ridiculous."

Pros: "Great flight, comfortable"

Cons: "Al momento del checkin, muy tardado y dando prioridad a los socios del club premier."

Pros: "I enjoyed that my kids had a great movie selection and food."
Cons: "I absolutely found it ridiculous how they board the plane. They did it both times coming and going. They didn't call anyone by zone they just allowed anyone to board at any time so I was in row 9 and people in row 20 boarded before me. What sense did that make."

Pros: "Nothin"
Cons: "My passengers are still in mexico, The flight was delayed 1 day and I was not notified I need you to get me a new ticket at your expense"

Cons: "TWICE for crying aloud I suspected it would before and sure enough it did it after I ate it Mexico has a beatiful food tradition why do you mess around with idiotic offerings? Best to not offer any food if it does not secure decent taste"

Pros: "Our flight was delayed but we got to our destination early. Lots of turbulance but the pilot flew in such a way that you barely felt it."
Cons: "Took 2 hours for the bags from our plane to get to the belt. Landed at 10:30pm and didnt get our luggage until about 12:45. There was 2 planes that landed right after us and all their baggage was on the belt within 10 minute!"

Cons: "We were stuck for appx 2 hours on the tarmac before deplaning. Then the baggage took another 2 hours to start unloading after our flight waited with no notice as to what was happening with our belongings."

Cons: "The gate did not display the flight and there were three flights out of my gate at roughly the same time. It was unnerving not knowing if I was getting on the correct flight."

Pros: "Chair and leg room were good, TV on the second flight was outstanding."
Cons: "First plane/leg was a little dirty. Second plane was immaculate."

Cons: "Plane didn't have entertainment screen"

Pros: "Transfer through Mexico city airport is a nightmare. You can clear immigration, get your luggage, clear customs, transfer terminal, check in your luggage, going through security, and finally get to your gate. All without any clear guidance from the airline or the airport. I will never fly through Mexico City again."

Pros: "Different movie options"
Cons: "- Flight was late. They are always late. - At arrival in Cancun, the purser's announcement contains wrong local time. They announce 11:20 pm instead of 10:20 pm. Is it not supposed that they must inform correctly this important details?"

Pros: "Liked games on plane"
Cons: "It was Areomexico but really it was Deta. My husband travels with oxygen so we did what Areomexico needed but not what Delta needed. We did have a doctor note so that saved us. When we got to Mexicothey sails our liggage was not there because we were in the wrong terminal. No one spoke English but it was there because we were on Delta. When we left almost went to wrong terminal. If it is Deltal call it delta not Aeromexico."

Pros: "I liked how they gave me a meal on the flight. It was a crossaint, one slice of ham and cheese but it's better than nothing."
Cons: "The boarding system was terrible. 30 minutes to departure, they just threw up "Last Call" and I was like WTF? and ran to gate only to find out that we just started boarding."

Pros: "I appreciate that flight service is very good, food was provided, and movies are free..all of this making for a more relaxed flight."
Cons: "Mexico City seems to have a new random security pre-boarding process. I was selected for this process. They swab bags,palms, shoes, and then have you sit down and remove your shoes so they can swab the inside of your shoes to check for some sort of residual. However, instead of doing the process before, it's in the midst of boarding with people walking all around you, meaning that you are in an awkward public space and board late. This also means there is no place to store your bag in the overhead compartment by the time you get on the plane."

Pros: "Comfortable seats, good service, convenient schedule, personal entertainment available"
Cons: "A broader selection of new movies releases would be great"

Pros: "There was no proper food and the staff showed a bit of an attitude. Could have been much better."

Pros: "Worst airline ever .!"
Cons: "I was left in Mexico with no money .! We're one hour and a half before the flight ,we were told our flight was close and we can not get on the plane. after trying to get a new ticket from a different airline I got an email from the airline informing me that my plane was still on the ground delay . I believe they oversold the flight . Aeromexico did not want to help ."

Cons: "Aeromexico gave us problems shortly after tickets were booked 10 months before travel. Multiple flight changes happened with no notification over a period of 8 months. In calling the company pre-departure, I discovered yet another change had happened and spent nearly 2 hours on hold awaiting clarification. I was told I would be contacted within 48 hours. When that didn't happen, I called again. More hold time. The second agent could find no record of the first conversation. Ultimately settled for a bad compromise (no choice really). Online check in was impossible as the flights were operated by Delta and the system wouldn't recognize Aeromexico record locator. We did get to Cancun but Christmas Day return marred by a canceled flight. It took nearly 2 hours to resolve at the airport, with a booking on United. No offer of compensation, nothing but a "thank you for being patient." I will never book travel through Aeromexico again. Ever."

Pros: "If your final destination is not Mexico DO NOT travel Aeromexico. You need at least 3-4 hours to clear customs and even if you get to the gate with 10min to departure AM will not let you on the flight. This airline has a near monopoly in Mexico and they do not treat customers with the care and attention western travelers are accustomed to. I travelled SF to Buenos Aires and both on my way down and back they made me loose my connection, which added an 11 and 9 hour layover respectively. The airport in MX is full of low level employees who cannot make a decision, nor rectify a wrong, even if they agree with you. THE WORSE TRAVELLING EXPERIENCE I'VE EVER HAD. Too bad because their on board service is good and they have a state of the art fleet (I flew the 787 dreamliner). Don't do it..."

Pros: "Cheap, you travel from point A to point B"
Cons: "They don't even serve water!"

Pros: "Boarding and timeliness"
Cons: "No food, no beverages"

Pros: "Liked the ease of boarding and cleanliness of the plane!"
Cons: "No reclining of seats"

Cons: "First I bought a ticket from Spirit Airlines SFO to MCO for 309$, then I saw charges from frontier Airline, frontier airlines bought a ticket for me too for 287$, when I was just watching checking the price. Then I compared the tickets, both the time, but from Frontier Airlines was cheaper then I stayed with frontier and cancel the other reservation from Spirit Airlines the next day I see frontier airlines also cancelled that reservation and I had to rebook another ticket for 496$, the price went up, then I had to pay 187$ extra, IT WAS A FRAUD JOB FROM FRONTIER AIRLINES, I can prove everything above with the receipts and the dates on it, the worse experience I had"

Pros: "Bag charged"

Pros: "Arrived 40 minutes early so can't be too sad about that especially since a gate was available immediately. Jet bridge in SF was heated but in Denver where it was colder and he had to wait it was not. The check in lady clearly did not care about her job at all I'm Denver. Frontier is a budget airline which for this trip worked for me as I was able to pack everything in a "personal item" and don't mind sitting in the back of the plane, I got lucky and got asigned a window seat. No drinks offeed without a charge which I don't agree with but again you get what you pay for. And it's way better than Spirit."

Cons: "Everything is an upcharge - carryon, a seat that reclines, etc."

Cons: "Flight was delayed several hours. This led to a loss of work time and money for me. I will not fly Frontier again for a business trip."

Cons: "They allowed us to checkin and get to the boarding zone just to tell us the flight was canceled."

Pros: "Good time slots"
Cons: "Long line at DIA bag drop (insufficient staff), delays on both ends"

Pros: "Crew was polite"
Cons: "Staff tried to make me pay for two carry-on's for one bag and one purse--totaling to $90. You have to pay for soft drinks. Generally bad experience and a rip off."

Pros: "I got the upgraded seat, (+$45). It was very roomy. There's no entertainment but I brought my own. Food and drinks for sale were good and not as expensive as the shops in the airport. No sandwiches, just snacks and booze. Overall was pleasantly surprised."
Cons: "It would have been nice to be able to buy a small sandwich.. It was a cross country flight and I was pretty hungry when I got off the plane."

Pros: "Price is able to reach"
Cons: "No water to customer drink"

Pros: "Little."
Cons: "Worst flight of my entire life."

Pros: "Nothing"
Cons: "At airport 2 hours before flight and still missed flight due to check in lines that were the length of the entire terminal. Knowing the capacity of planes and number of booked flights, one would think they would have more than 4 people working the checking in counters. Did not receive a refund for flight and baggage fees. I will NEVER Frontier again!"

Cons: "I will never fly frontier. they changed gates 3 times, turned off AC, had no one to push back the plain and so on. too many to list."

Cons: "Mistake with wrong gate number, no food, crew with out smile, plain with no plug in inside"

Pros: "On time."
Cons: "The nickel and diming. Good lord."

Cons: "Flight attendant from Denver to San Francisco had a bad attitude and was passive aggressive with guests. Perhaps it was a long day for her but at the end of the day you have a job to do and don't take it out on paying customers."

Pros: "same as above"

Pros: "Nothing"
Cons: "Another plane malfunction! Last time we flew Frontier we were stuck for 2 days in FL! Never was another plane brought in for us. Never was another flight to,Cleveland bumped so we could return home. At least you figured out that disaster and we were able to board a plane scheduled for Philadelphia, which bumped that passenger to a flight 3 hours later. And the stories of horror other passengers had last night...all about Frontier, one man previously had totally missed a cruise! This is not how to maintain nor run an airlines. I will not be giving Frintier another chance."

Cons: "Crew service when serving paid drinks, mis-taken order"

Pros: "I liked how fast the boarding went. The flight attendants were very nice. The wine was nice. We were kept informed about the fact we were running late. Still arrived on time. Plane was clean."
Cons: "No entertainment! But I expected that so that is okay. Unclear why the question. People next to me bought a snack but the one they wanted was out. They were disappointed. I did not like the fact that luggage is so expensive to check. I could not believe I had to pay for a seat once I had bought my ticket. I thought that was part of the price of the ticket. I can't fly standing up."

Pros: "On the up side the crew seemed to be nice and professional."
Cons: "The plane was too small and there was no entertainment. All snacks and drinks had to be paid for. I have never experienced this with any other airline."

Cons: "Worst seats in any plane I have EVER been on (and I travel ALL the time). Those steel seats with 0 cushion have resulted in me having the worst back pain and being on bed rest for the past 3 days on severe pain medication with no signs of improvement. I will never fly Frontier again."

Pros: "I booked Frontier for the low price. But after going to a farther away airport and paying for bags and seats and drinks and sitting in an uncomfortable seat, I am not so sure it was a great deal. I am happy that I did pay less than other airlines even with the cost of checking a bag (less cost than carrying one one) and for the seat. Because it is more costly to carry on a bag, hardly anyone did leaving lots of room in the overhead compartments and speeding up boarding and deplaning considerably. Snacks and drinks were reasonably priced and lower cost than in the airport. Only snacks like chips and beef jerky are available so if you want food, bring your own. Flight attendants were friendly. My bag arrived on the same flight that I did and it was in good condition. We were reasonably close to on time."
Cons: "Seats are short front to back and don't recline. There was barely enough room between seats to force by backpack down to the floor and almost no room on the floor to hold it leaving me with no where to put my feet except on top of it. My legs are long and about 1/2 of my leg was not supported by the seat. This was manageable for a short flight but I would certainly not book a long flight with these seats. We spent considerable time on the tarmac waiting at both ends. I am not clear on the delay at the beginning of each flight. The delay at the end was related to Frontier only having 1 gate at each airport so we had to wait until it was free. Yes, we landed 20 minutes ahead of time, but we got into the gate 20 minutes late - meaning sitting on the tarmac for 40 minutes. Bags were slow to come up. Probably because everyone checked them so there were many."

Pros: "Flight left and arrived on time."
Cons: "Seats didn't recline and website is misleading when it comes to purchasing seats. I was very uncomfortable."

Cons: "This airline comes up with every idea possible to charge the costomer. I give the airline a star for being sneaky and sly and having rules and policies to rip off passengers. Because it is brilliant that they con you without breaking any laws."

Cons: "The pilots were an hour late after we had already boarded and provided no explanation or appologies."

Cons: "Delayed again. This time by 2.5+ hours. They nickel and dime you for everything. - charges to check a bag, for carry-on baggage, to get a seat assignment, for a soft drink....I will not fly Frontier again if I can help it."

Pros: "Absolutely the worst airline I have ever been on! You buy the ticket under the assumption you got a great deal. What they do not not tell you is that when you purchase an economy ticket, which everyone buys except first class you have to pay for carry on. Your first checked in bag costs $40, any bag after that is $45. So my carry on bag cost $45! Between my husband and I we spent a total of $170 on luggage for two checked bags and two carry ons. So if you are bringing any luggage with you, go on a different airline, you will save money by the end of the day. Also, all drinks and food are for purchase."

Pros: "Frontier claims to be the cheapest, but they add additional fees to bring a carry on item (it ends up being cheaper to check your bag) and to select your seat when checking in."

Cons: "First of all, they charged me to check into my flight. My $131 ticket turned into $183 and I hadn't even checked in for the way back. Not only did I have to pay for a seat at check in, but I had to pay $40 to brin a carry on!!!! So what the heck did my ticket pay for?!?! Once I choked down the extra $53, I went to the gate and the flight was cancelled. The gate attendant offered a refund or to put me on a flight the next day. He wouldn't look at other airlines for me. The only nice thing they did was make the refund process easy on the phone, since I had to leave the terminal to find another ticket counter to help me. I will not be flying frontier. Ever."

Pros: "I only buy Frontier for the price."
Cons: "The seats are horrible,awful, cramped & dont recline. Hard, too close,painful, no tray table room. UGH! Im still in pain."

Pros: "Pay extra for another airlines. Frontier is uncomfortable and you have to pay for everything after the ticket. You only end up saving minimal amounts."

Pros: "N/A"
Cons: "the time , the plan is not on time and the customers service they are not patients ."

Pros: "Price"
Cons: "Delay"

Pros: "$45 to carry on a bag and put in the overhead bin. Ticket was cheap but after paying $45 EACH WAY I spent more than buying a ticket on another airline that lets you carry on a bag for free. They even charge for soda. Ripoff. Will never fly this airline again. Buyer Beware. There is no way to know about the hidden fees before buying your ticket unless you want to spend an hour or more combing through the multiple pages of fine print."

Pros: "Very smooth landings"
Cons: "No seat reclines You have to pay for each seat. Not the flight amount but you have to pay for a seat! Not a single thing is include. Not even a bag of peanuts"

Cons: "hidden fees, paying for baggage."

Pros: "Got us to the destination safely."
Cons: "They charged for everything and thanks for giving me a middle seat when I had a toddler with me. What an terrible idea! I couldn't get a different seat and the crew and staff were less than helpful."

Cons: "Horrible customer service at check-in, and unclear policies around checking in and checking bags. Will never fly Frontier again."

Pros: "leg room"
Cons: "small trays, uncomfortable seats"

Cons: "$45 for a carry on! The announcements on the flight were entirely about what you could not do, should do. It was like we were in the military. No friendliness other then when we landed thanking us for flying Frontier. Gate Agents said in response to me running to the gate 30 mins prior to the original scheduled departure (because the monitors were saying final boarding) when the flight was delayed an hour...."well at least this way everyone will be here for when we do leave/ Really? That makes it a good idea to have passengers running to the a gate just to wait another hour. I was in row 4...seats in front of me reclined and our row did not...fortunately I was not affected by the person beside me in the middle seat was...poor design to have people in row 4 have already tight space reduced significantly due to person in front reclining the seat."

Cons: "While booking I was unaware frontier airlines charged for carry on luggage and didn't participate in TSA pre check. In addition to paying $45 more for the ticket than advertised and having to use normal security, the plane was so cramped the guy behind me hit me in the head. Finally there was a persistent foul smell in the plane. It was a rough 4hrs 30 min. I would recommend spending more and flying southwest or United."

Cons: "The price of the trip did not include a seat, nor baggage, this was unclear and I felt misled. The seating is extremely uncomfortable. Checking in online was terrible, the website was hard to navigate, the prices were inconsistent (I was checking on my phone and computer at the same time and getting different rates for seats). I felt the communication was poor. I did not feel safe. I will not choose this Airline again."

Cons: "Flight delayed by 3 hours, forced me to pay $40 for my carry on, terrible seats, were charging for a can of soda"

Pros: "Nothing"
Cons: "They didn't let us board despite us checking in before doors closed. They sent us away to find another flight vs helping us find one. Poor customer service. Then they made us feel guilty looking for us at the security check for holding up the plane, when they sent us away in the first place!! Miscommunication among their crew. We had already bought another fare since try refused to let us board. We got there 30 minutes before departure and they didn't let us board! Even if they saw we had 3 kids with us!! Will never fly with them again anyway, they charge you for everything!"

Pros: "I guess the crew was polite. They seemed like hard working people who were there to do their job."
Cons: "The tray table was too small for a standard-sized laptop (around 4-5 inches long), there's no complimentary food/beverage whatsoever, you pay extra for bags, extra to choose a seat (which resulted in me sitting in the middle seat in the very last row). It's just a cheaper, lazier experience than even spirit airlines, and that's saying something."

Pros: "The flight was like most flights , ,full, long boarding cramped no food choices and very costly"
Cons: "I understand that due to the thanksgiving WE. the flight was full. No complaints. The thing I disliked the most was that for everything you had to pay EXTRA. ,luggage , drink, snack and seat. May be you should consider standing room too...?..How do you expect that we get there without sitting down . ????? I do not agree that we MAY HAVE to pay for extra's BUT FOR A BASIC SEAT ???????AREN'T YOU GOING A LITTLE FAR. YOUR RULES REQUIRE THAT WE SIT DURING THE FLIGHT ,BUT THAT WE HAVE TO PAY FOR IT . ??????YOU ask for my dislikes , well, here you have them . Frontier has too many extra costs on top of an already expensive ticket."

Read more about Delta
COVID-19 information

Safety measures for airlines flying from Cancún to San Francisco

Airlines flying from Cancún to San Francisco have enacted additional safety measures and adjusted policies to better accommodate travelers. Policies vary by airline.

Heightened sanitation

Daily cleaning, installation of cabin HEPA filters

Mandatory masks

Masks required on board, masks provided

Social distancing seating

Middle seats unavailable to book

Pre-flight testing

Testing for antibodies, testing for symptoms

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