Find cheap flights from Seattle to San Francisco

SEA - SFO

Find cheap flights from Seattle to San Francisco

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Round-trip
Economy
Seattle (SEA)
San Francisco
Thu 6/24
Thu 7/1
Any month
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Good to know

Low season

MarchBest time to beat the crowds with an average 8% drop in price.

High season

DecemberMost popular time to fly with an average 13% increase in price.

Average price round-trip

$159(avg. price over the last 2 weeks)

Good deal round-trip

$117or less

Good deal one-way

$76or less

When to book flights from Seattle to San Francisco

Estimated round-trip price
Average price per month
Flight prices as travel date approaches

Top tips for finding a cheap flight

  • Looking for a cheap flight? 25% of our users found flights on this route for $76 or less one-way and $117 or less round-trip.
  • The cheapest flight from Seattle to San Francisco was found 28 days before departure, on average.
  • Book at least 3 weeks before departure in order to get a below-average price.
  • High season is considered to be November, December and January. The cheapest month to fly is March.
  • Morning departure is around 7% cheaper than an evening flight, on average*.
  • Looking to take public transport to Seattle-Tacoma International Airport so you can avoid the hassle of renting a car? Link Light Rail services connect Seattle-Tacoma International Airport directly to downtown Seattle and even to the University of Washington. The airport’s Link station is located outside the airport on the fourth floor of the adjacent parking garage.
  • Want to give the kids the chance to burn off a bit of excess energy before the flight? Stop by Seattle-Tacoma International Airport’s Playroom, located by the Seattle Tap Room in the Central Terminal by the A gates. At San Francisco International Airport there are three children’s play areas to choose from: two in Terminal 3 and one in Terminal 2.
  • Fortunately for travelers wanting to grab a bite to eat before they board their flight out of Seattle-Tacoma International Airport, there are plenty of restaurant options available - even for those with dietary restrictions. For vegetarians and vegans there is Floret, while for those who prefer meat on the menu, there is Rel’Lish Burger Lounge.
  • The Aviation Museum in San Francisco International Airport is a great family-friendly activity for those who are looking for a diversion during their time at the airport. The museum includes a library and is open from 10:30 a.m. to 4:30 p.m.
  • To reach San Francisco International Airport’s Rental Car Center, simply hop on the AirTrain Blue Line at any one of the airport’s terminals. The AirTrain runs 24 hours a day and also connects the terminals to all of the airport’s parking garages and the BART station.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for booking flights from Seattle to San Francisco

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Top 5 airlines serving Seattle/Tacoma Intl to San Francisco

Scores according to KAYAK customer reviews

8.3
Alaska Airlines
Overall score based on 29,428 reviews
8.5
Boarding
8.3
Comfort
8.8
Crew
7.9
Entertainment
7.9
Food
Airline reviews

Cons: "Not enough fruit & cheese boxes to reach past mid plane"

Pros: "Everything"

Cons: "The plane’s electrical system was not working and we sat on the plane for over an hour with no A-C. Several solutions that were tried were also broken and we were told that the plane itself need to have additional electricity to start the plane for the past 4 days! Unacceptable on a usual A+ airlin"

Cons: "Immigration and customs along with baggage claim was a mess. They need to get it together. It should have been more streamlined and the lines are ridiculous."

Pros: "I loved how accommodating the crew was for having a late departure."
Cons: "Maybe update the passengers as you find out the plane will be later than expected"

Cons: "Start serving people early and the plane smell musky"

Pros: "Everything"
Cons: "My cabin bag has been misplaced and I siding receive the same."

Pros: "Got in a bit early!"
Cons: "Nothing"

Pros: "Window seat"
Cons: "Alaska changed my seat twice, and didn’t let me pick a seat before or at check-in"

Cons: "One hour delay but overall it was good"

Pros: "Early boarding"
Cons: "Plane was late no food, no blankets and screwed up checking my bags to Bangkok."

Pros: "Interior layout was pretty cool. Like the class divider and first class seats (even though I didn't sit in them). Pre-flight briefing was entertaining and funny. Gave me the whole can of Sprite!"
Cons: "Nothing truly negative to say."

Pros: "Having very comfortable seats"

Cons: "Once agin slow boarding"

Pros: "Everything was great! This was my first time flying Alaska Air and I could not have had a better trip! Everything ran according to schedule, I was comfortable during the flight, slept the entire time, staff was great!"
Cons: "The woman making announcements did not specifically announce the duration of the flight as we were departing. I was able to figure it out on the map option on the screen, but I would've liked to hear it verbally. Only suggestion I would have is an announcement on the plane for which baggage claim belt our luggage would come out of. I may not have heard it though, if there was an announcement. It was not difficult at all to figure out once I was in the baggage claim area, however if this was known while we were still on the flight, I prefer to know this info!"

Pros: "The free movies."
Cons: "Flight boarded late and left late."

Cons: "Everything!!!"

Cons: "Waiting for a gate to deboard for almost an hour- poor service!"

Pros: "In flight entertainment options. TV, Movies & Music. Great selection...and its free!"
Cons: "Boarding was long and arduous. But I believe this to be the case with most airlines."

Pros: "Great experience."

Pros: "The crew's friendliness and professionalism."
Cons: "The boarding process was not as smooth as we were used to."

Pros: "The crew were very attentive and pleasant to interact with."
Cons: "The food was a little lacking. But considering it was a short flight it wasn't that big of a deal."

Pros: "The people I sat with made for great company."
Cons: "Flight was changed, so my premium seat was canceled. Luggage was delayed significantly. No technology availability."

Pros: "The airplanes were nice, clean and comfortable,"
Cons: "The food was nasty! The choices were aweful, the crew didn't look profesional!! They look like they were going to sport event."

Cons: "Late departure, late arrival, stuck half an hour on the ground before being able to get out of the plane while the PA blasts a message about Alaska being the most ponctual airline : a joke"

Pros: "Always reliable. The updates on my emails and phones are fantastic. Alaska always exceeds my expectations. Proud that they are from my hometown. Seattle."
Cons: "Nothing."

Cons: "Delayed both ways"

Cons: "Diversion to San Jose without shuttles to downtown SFO."

Cons: "Issue with first plane meant 20 passengers bumped to later flight. I volunteered and that flight was delayed upon arrival. :/"

Pros: "Alaska is the best."

Pros: "nice free cookies"
Cons: "late departure, late arrival, and then we sat motionless on the tarmac for 20 minutes for our gate to be ready"

Cons: "Plane was delayed taking off because they waited for connecting passengers. Plane was delayed deplaning because a ground crew was not ready. I missed my BART connection and had to pay $50.00 for an Uber. Extremely displeased."

Pros: "Brian of the brand new air plane's staff was very friendly and attentive. The plane had that great "new plane" smell ... mmm! :)"
Cons: "Well, it's always difficult when one has to change terminals and the plane is delayed. It's even harder for those of us with mobility issues. I use a knee scooter and I was in a lot of pain by the time we finally boarded. The crew seemed just a bit confused as to what was going to happen to my scooter, although it worked out just fine. I couldn't get the in-flight wifi to work either of my two devices, nor could my seat mate. :( We were served food very late in the fight -- I had about 15 minutes to eat before the seat tray had to be put up. But worst, my flight home has been cancelled and rescheduled for a much later flight. As mobility device user, I'm limited on who can pick me up and when. This means an over two hour wait for my pick up person, which is very hard on a one-legged person. I asked Alaska if they would be willing to waive the fee for a different flight when I can get a prompt pick up person with room for my mobility device. They said they would not. I'm a little surprised, as Alaska claims to be ADA and military friendly. I'm not sure I'll fly Alaska again."

Pros: "Everything"
Cons: "Nothung"

Pros: "Friendly service."
Cons: "Had to wait 20 minutes on Tarmac because another plane was parked at the gate we needed to use."

Pros: "Great crew, very nice and accommodating"
Cons: "waiting for the gate at the end of the flight, not that it could be helped."

Pros: "The crew was courteous and professional."
Cons: "The seats were too close together. For someone that is tall, the airline standard that is followed is inadequate without paying an up-charge."

Pros: "The pilot was super cheeky, he said "we hope you pay attention to the emergency announcements or at least pretend to, out of respect to the flight attendants." :) Loved the friendly and cheerful atmosphere the staff creates."

Pros: "Our flights were on time in both directions. Our flights were not full on either direction; I had a window and my companion got an aisle and we had an empty seat in between. Our flights were short enough that I didn't concern myself with food or entertainment so can't rate those."
Cons: "We had trouble locating the place where we were to collect our bags at the SFO international terminal. It would have been helpful if the door had been open to the baggage claim area or if the door to the area had been more clearly signed."

Pros: "legroom, outlets"
Cons: "in flight entertainment,"

Pros: "The boarding process was smooth."
Cons: "There was no in flight entertainment. Also, my area of the plane had a terrible lingering smell that was sort of like a dirty wet towel. I'm not sure where it was coming from but it felt awful having to sit through that for 2 hours."

Pros: "The crew was very friendly!"

Pros: "Flight was delayed. Alaska Air allowed us to fly on an earlier flight. No hassle!"

Pros: "Boarding was very clear, some airports you can't hear what group they are calling to board. In addition they had a screen to show which group was boarding which was very helpful. The staff was nice, no issues."

Pros: "Comfortable leg run, great staff, sense of humor of the announcing stewartress."
Cons: "We were late leaving but made up time in the air, We were late about 20 minutes."

Pros: "I like the ease with witch the pilots took off and landed, very, very smooth. I would definitely consider Alaska next trip I take."
Cons: "What I didn't like was how they boarded the plain. I understand the logic of boarding back to front but not enough organization at that gate. Too many people bunched up because the rows were not called appropriately. May I suggest that after the first class, children and assisted folks get in the plain that they call passengers by sections, for example: the last 10 rows first, then the next 10 and so on. so everyone is not just blocking the front part of the gate. So it will be more orderly and quickly to board. Not enough was said over the loud speaker about how people should be boarding, as most other airlines board front to back first and that's my 2 cents. thank you."

Pros: "A great clean and tidy plane."
Cons: "We booked late so I didnt get to sit with my wife."

Pros: "In flight entertainment from sfo to Sydney was decent"
Cons: "I didn't like that my flight had to be delayed an extra day. The food was meh. Virtually no leg room and I'm only 5'5'. In flight crew was a little forgetful about drinks, had to ask several times for the same drink."

Pros: "The staff"
Cons: "The landing was a bit abrupt"

Pros: "I would like to have ore of a grace period to check baggage."

Pros: "Amazing"
Cons: "Nothing"

Pros: "Price is ok"
Cons: "Delays of three hours are very bad"

Cons: "Terrible delays"

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

Cons: "Better food offerings"

Cons: "Roomier"

Pros: "Just a great experience Delta is still above the rest excluding Hawaiian"
Cons: "Cant think of anything"

Pros: "Everything! Thank you"
Cons: "Nothing. Thanks"

Cons: "Food really bad on both segments."

Pros: "Very comfortable, no complaints."

Pros: "Good access to charging, good food"
Cons: "More space:)"

Cons: "No room to move, too hot, no sound when trying to watch movies."

Pros: "The guy announcing the boarding was a hoot! Great sense of humor."

Pros: "Nothing"
Cons: "Nothing"

Pros: "Yes"
Cons: "Took off late. Other than that very comfortable and great experience"

Pros: "The website delivered everything I needed."
Cons: "More discounts for frequent users."

Cons: "N-S"

Pros: "WiFi on board."

Cons: "Kayak a howed my gate as something that didn’t exist at the terminal. I went to a kayak help desk to have a ticket printed that showed my TSA precheck because it wasn’t showing on my mobile ticket, and no one was there to help. I waisted for 10 mins. It then took me nearly 2 hours to get through security. I asked if I could get through quicker and was told I could not, despite it being passed my boarding time. I then ran to my gate where I waited for another 10 mins (no one was there, again) and then an employee came out and said they couldn’t let anyone board once the door was shut. He then directed me to the delta help desk (there was at least 20 people behind me who missed their flight). I then had to pay an additional $75 to get a later flight. The whole experience was awful and I’m disappointed with Kayak and the gate confusion, but mostly Delta and the lack of customer service."

Pros: "."

Pros: "Snacks that include a dairy free option like the kind granola bar"
Cons: "We were delayed like crazy."

Pros: "Friendly staff"
Cons: "Napkins stuffed in the overhead to fix presumably the rattles."

Cons: "Old cramped untidy and limited drink service"

Pros: "Nothing"
Cons: "Multilpe delays"

Cons: "late leaving, arriving and taxing."

Pros: "Great"
Cons: "Too many announcements"

Pros: "Alaska Airlines is way overpriced and way less comfortable than Delta. I’m a Delta loyalist forever now!"
Cons: "Nothing."

Cons: "We waited 3 hours for the tarmac in Seattle On Christmas"

Pros: "Being on time."

Cons: "Too crowded."

Cons: "No drink or snack service. No trash pick up. No option to purchase or rent headphones"

Pros: "Fast and efficient boarding again! Most impressed!"

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

Cons: "Delayed for an hour and fifteen minutes"

Pros: "everything was very nice"

Pros: "Enjoyed food and movies.Woul"
Cons: "Would like more comedy or romance movies. Becky"

Cons: "Late and missed my international connection"

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

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

Pros: "Very friendly and helpful staff."

Pros: "COURTESY"

Pros: "Very attentative."

Cons: "Aircraft was smelling bad! Hygiene is the key"

Pros: "Helpful staff. Never felt rushed if I had a question. The special meal (VLML) was excellent. Tasty, filling and nutritious Plenty of foot room in economy."

Pros: "Nothing. Delta sucks!"
Cons: "Poor management prior boarding"

Cons: "Enforce your baggage size and number limits. A significant number of passengers take bags onboard that are oversized."

Cons: "No meals was available for VEG. people."

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

Cons: "Not enough sitting space felt very cramped"

Cons: "Traveling in a 737-800, there is no displays at your seat. One must BYOD. Wifi was spotty."

Cons: "First time wearing face mask all the time. It was okay."

Pros: "On time. Fast boarding. Comfortable seating."

Cons: "50 minute wait for a gate to deplane. How could there not be a gate at 10:30 pm? It’s not like our arrival was a surprise!?"

Pros: "The internet and movies"
Cons: "The AC was not turned up it was very hot and even after I asked nothing was done."

Cons: "On Time. Delayed advice 3 times."

Cons: "Delays sucked."

Pros: "Highly skilled pilot."

Pros: "Everyone was nice and it went smoothly!"

Pros: "No"

Cons: "Never made it"

Pros: "Smooth operation"
Cons: "WiFi is horrible"

Pros: "entertaining system"
Cons: "food could be better, not bad though"

Cons: "See above"

Pros: "On time and the staff was great"
Cons: "Nothing"

Cons: "The flight was delayed. The food was not great. There is not a lot of space in these planes, and it was a long flight. There is no power supply."

Cons: "No signage for checking bags. Was total cluster. No one knew where to take bags or what line to be in. Employees kept telling us we were in the wrong line but didn’t seem to tell us what was the correctly line."

Cons: "Lateness, seat comfort and gate checking a duffel bag"

Cons: "the connection time between flights was NOT adequate especially considering I had to go through customs! AA did page me and had a representative (I think his name was Brian) waiting for me to help me get to my connection. He gave me a bright red/orange tag. I still hit some barriers. I was stopped in security and my carry on was put aside to be searched. It sat and sat . I explained to the man I had to go. He said he was working alone, so I had to wait. I was ready to leave it and just run to catch the flight, but the security man said I wasn't allowed to do that. He finally called someone else to search my bag (nothing found) I did make it...barely!"

Pros: "Everything"
Cons: "Middle seat"

Pros: "Quick and did good job"
Cons: "After flying Japan Airlines I wish there were more free food and entertainment"

Pros: "Great service!"

Pros: "Loved the entertainment features. Great movie selection!"
Cons: "Nothing"

Pros: "Flight was on time."

Pros: "Took off and arrived on time."

Cons: "experienced a 1hr mechanical delay. it would be nice if refreshments were served."

Cons: "For a flight five hours or more I was disappointed that there was no complimentary food. It otherwise it was fine"

Cons: "No personal entertainment devices on 737-800."

Pros: "blanket made it comfortable"
Cons: "No entertainment options"

Pros: "See above"
Cons: "See above"

Pros: "loved having a movie to pass the time. Super friendly attendants."

Pros: "love it!"
Cons: "b/a"

Cons: "No Gogo entertainment"

Cons: "Chair wasn't that comfortable"

Pros: "Good free entertainment. Thanks."
Cons: "No good free snacks. Only free drinks."

Cons: "My screen didn't work and the flashing ads gave me a headache"

Cons: "No screens, no wifi"

Pros: "Entertainment"

Cons: "People still using mobiles as we were taking off. Crew seemed not too bothered."

Pros: "Tebsnacks were awesome!!"

Cons: "Self check-in staff at Seattle was not that helpful."

Cons: "Same as above"

Pros: "Nothing absolute nightmare .. no water .. are you serious"

Cons: "Gate agent said there was a maintenance problem that just needed maintenance to sign off. Over heard maintenance work while boarding that could not get message on computer of problem. Pushed back and sat on tarmac for 10-20 minutes as pilot said they worked through maintenance issue."

Pros: "On time for both flights"
Cons: "N/a"

Cons: "Sits were not comfortable."

Cons: "We haven't left yet"

Pros: "Entertainment"
Cons: "Too many levels of passengers"

Pros: "On time. No issues. The last two times I have flown Delta I've had issues. Smooth sailing"

Pros: "It was great!"

Cons: "All went well."

Pros: "San Fran to Vegas - Good Flight! Slept the whole way so no need for entertainment however - it being an United Airline Flight I assumed all of the planes would have inflight tv’s on the backs of the seats. Other than a little turbulence - great flight! Thanks for keeping my baby and I safe."

Pros: "?"
Cons: "Delayed. Charged for my bag even tho i have the United explorer Visa. Skipped me with pretzels and when I asked for some, it was as if i was asking fir something extraordinary!"

Pros: "Nothing"
Cons: "Our flight was delayed and despite assurances by United staff at the gate in Seattle that we would make our flight in SFO to Zürich we were too late and we missed our flight to Zürich. 14 hours later we are still at SFO trying to get on a flight to Frankfurt then on to Venice. We shall see if it actually happens. The couple we are traveling with gave up and went back home to Boise. They also bought their tickets through Kayak."

Pros: "Nothing great, nothing bad. took off and landed on time."
Cons: "paced seats, nit enough room for carry ons."

Pros: "Everything except seating"
Cons: "Uncomfortable seats, not enough legroom for 6 ft or taller passengers."

Pros: "It was a fine flight. I only had cranberry juice, but it hit the spot."
Cons: "It was a full flight but I expected that it would be that way after Thanksgiving."

Pros: "No one died."
Cons: "The flight 586 was late and despite having two hours to wait in SF the flight got to SF just as the connection was finished boarding. I had to run from a gate in the 60s to 84D and the people at 84D were whining about my getting to them so late. United Airlines needs to get its stuff together!"

Cons: "Great flight"

Cons: "Entertainment doesn't work with Android 8.0 devices because you decided not to support newer versions? Stop restricting it to higher versions idiots"

Cons: "Shitty service ,...."

Cons: "Cacelled then delayed twice. United workers are also very rude. I give them a big ol"

Pros: "Effort by Seattle team to find alternate routes"

Cons: "Now Sherry in any documentation I received did it say that my flight was operated by United airlines. I waited at ANA check in until within the 2 hour window and went around and asked someone at United who confirmed that they were partners with ANA."

Cons: "Did not make connection due to flight being late"

Pros: "Luggage bag broken by baggage handlers"
Cons: "Luggage bag broken by baggage handlers"

Pros: "More important than the trip home last Wednesday was the reason for the trip. We attended my granddaughter's wedding. Everything else was secondary. Even if the trip had been in a one wheeled barrow, it would have been good. To get to what you want which is the mechanics of the trip. The two people who attended to the aisle chair, most teams were competent. Some hadn't done many passengers so they were fumbling with the straps. I've learned that I almost alway have to ask for one at the gate where they check or issue, (what's it called, loading permits, some kind of pass, not landing pass. loading pass. I can't remember and my wife has gone to bed.) Well, they have to come up with an aisle chair because I've only got 1 1/2 legs. I always make it to the seat on the plane, but the competency of the various crews is uneen. Sorry my answer is so nonspecific but I don't remember one airline from another. Great people all, get the job done."
Cons: "Not much I don't like. They get us there That is the main thing. Sometimes when the plane stops after it has pulled away from the Jet Way, the pilot gives an explanation that I find unfulfilling, not enough details. I suppose if they explained more, other fliers would find the explanation too verbose. I can live with it. Again this is about all flights and airlines. Nothing stands out, such as, " this awful thing happened when we left San Francisco.""

Cons: "Sitting on runway for almost an hour bc of ground stop in San Francisco"

Cons: "Delayed getting on our way I think because they were late getting in and had to do all the plane checking. Captain said safety checks. Seat space felt tight and I am short."

Pros: "not a goddamn thing"
Cons: "first flight delayed, connector gone by time we reached airport. next flight was 8 hours later, then 90 minute layover. Got home 25 hours arriving at airport. United fully deserves reputation as Americas Worst Airline. Will never EVER use them again. Would rather hitch hike cross the country."

Pros: "EXCELLENT"

Pros: "Delays 2 hours"
Cons: "Refund"

Pros: "Friendly and helpful staff."

Pros: "Great service. Free movies. Quality alcohol good food. Couldn't have been better!"
Cons: "It was perfect no complaints honestly it was one of the best flights of my life and I travel very often."

Pros: "On time and smooth flight"

Cons: "I wasnt allowed a carry on because there was no room on the plan. unfortunately what I planned on carrying aboard was fragile and could not be checked. I was stuck in seattle hoping for another flight I would be able to board. When ever possible I will do my best to avoid United"

Pros: "On time"

Pros: "Flight went smoothly without any substantial hiccups or delays."

Pros: "Service was great"
Cons: "None"

Cons: "great service & was on time & we landed early too!"

Cons: "I was not asked/offered any beverages, though I was wide awake reading a magazine, when the flight attendant was serving food/drinks."

Pros: "My seat"
Cons: "Snacks weren't very good"

Pros: "The seats looked new."
Cons: "United had us board and unboard and then board again due to flight delays. United also told us the delay would be only 40 minutes, but I looked at the delay in SFO and it was 2 hours. Eventually United also increased our delay by 30 minute intervals until it was about 2 hours. Once I arrivied in SFO I got a text message notification stating my luggage had been put on an incorrect flight and I would have to return to get my luggage. The attendants at the podium were rude. This was my first terrible flying experience ever."

Pros: "Download the United App (before takeoff! Or you'll have to pay). The App has some good movies and you can watch them free of charge."
Cons: "Nothing"

Pros: "The flight was not charged."

Pros: "Seat itself was comfortable."
Cons: "Out of several beverage options. TV was not working at my seat. Seats also a little cramped. Boarding seemed disorganized."

Cons: "WiFi wasn't working properly and the power outlet"

Cons: "Very poor customer service"

Pros: "Flight was on time."
Cons: "Children were allowed to kick chairs and slam tray tables through the entire flight. It was far beyond childish play. It was awful and no crew did anything g about it."

Pros: "nothing since the flight was delayed 4 times and ended up being canceled. No apologies or refunds were issued. This is not the first time United has ruined my vacation, but it's the last time I will use their services."
Cons: "The complete indifference of United."

Cons: "was more than 4 hour delayed"

Pros: "Both flights were early, which was nice for a change."

Pros: "United airlines seems no better or worse than most major airlines today."
Cons: "I am fed up with the herding mentality by most airlines. Since when did purchasing an economy seat mean you are not entitled to at least a modicum of comfort on a flight. The legroom provided now is no where near enough for any normal size human. Additionally it's still annoying to pay $25.00 for a single checked bag. I tried United after many years but will be returning to Southwest Airlines - in the long run it's less expensive. I realize nothing will change based on my opinion, regardless, it is more comfortable and dignified to take a Greyhound bus than to fly a major airline these days."

Cons: "All flights were delayed.. Boarding system seemed very unorganized."

Cons: "Sat in airplane for more than an hour due to "maintenance""

Pros: "Nice leg room courteous attendants"
Cons: "Pay to watch all tv? Not worth the charge"

Pros: "BEFORE BOARDING, THE STAFF WAS SUPER FRIENDLY AND ACCOMMODATING"

Pros: "The captain kept us informed, the flight attendants were simply amazing, going above and beyond to ensure the best flight possible."
Cons: "The plane was delayed twice. The crew members at the terminal did nothing to explain why. I do know that in their world things like this happen, but in the customer's world, things like this can really mess up someone's day, so simple periodic updates as well as one genuine apology for the inconvenience would have made things a whole lot better."

Cons: "Late, deplane, staff was unhelpful"

Cons: "Delay"

Cons: "Terrible."

Pros: "Everyone was helpful and friendly."
Cons: "Not charge so much for luggage and carry-ons."

Pros: "Plane interior was bright and new."
Cons: "Baggage retrieval. Chairs don't recline."

Pros: "This airline is completely disorganized and with no apologies. I waited an hour in a bag drop line and then an hour and a half in the plane with no real explanation as to why. Planes are super bare bones which is fine. They just seem to be incredibly understaffed and unorganized as a company. All of the attendants and desk workers were trying their best but were set up for failure"
Cons: "This airline is completely disorganized and with no apologies. I waited an hour in a bag drop line and then an hour and a half in the plane with no real explanation as to why. Planes are super bare bones which is fine. They just seem to be incredibly understaffed and unorganized as a company. All of the attendants and desk workers were trying their best but were set up for failure"

Cons: "It's $40 to bring a carry on... really?"

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

Cons: "No one at Frontier desk. Sign stated to check in at kiosk or online, but there were no kiosks. Online check in was unnecessarily long and onerous, and then last step couldn't be completed; advised to download app. Then had to repeat process with app. Then had to go back to desk to drop off luggage; still no one there, very long long formed, and finally when someone came to the desk the line took 20 minutes. Every other airline has figured out how to avoid this!"

Pros: "Bag charged"

Cons: "Delayed 2 plus hours Upon arrival into sfo over 1 hour and 30 mins to get bags"

Pros: "Very uncomfortable, otherwise acceptable"

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

Pros: "Nothing"
Cons: "Everything. Safely back in SFO. That's it."

Pros: "Simple and comfortable"

Pros: "Nothing"
Cons: "Everything"

Pros: "I got home safely"
Cons: "Both flights were over an hour and a half late. The seat designer should be arrested! Drinks and snacks were beyond "overpriced"!!"

Pros: "Nothing."
Cons: "Everything."

Pros: "same as above"

Cons: "Frontier doesn't lease enough gates. Waited 35 minutes after landing for gate to clear. Both flights. Frontier late in unloading bags. Waited 40 minutes at luggage carousel. Frontier lost my bag"

Pros: "stewardess was excellent/funny"
Cons: "too cramped. to get additional legroom it is more money."

Pros: "What is to like?"
Cons: "everything!"

Pros: "Inexpensive"
Cons: "Seat extremely uncomfortable for a person my height (6') and not adjustable in any way. Not a ton of leg room either, though not noticeably less legroom than other airlines."

Pros: "The staff was kindly and it moved swiftly."

Cons: "Hour late,"

Cons: "It is a sad state of affairs to charge $40 -45 To carry a weekend bag on board."

Pros: "The airline niceled and dimes you to death. My luggage charges were almost as much as the airfare. I will never ever fly Frontier again. The trip sucked!"
Cons: "NOTHING"

Pros: "nothing"
Cons: "everything"

Pros: "Delay for too long. It took so long after landing! What are the ground crews doing?"

Cons: "We were stuck on the runway for over an hour after we landed and getting our luggage was a DISASTER. They changed the location of our baggage claim carousel with minimal notice, only to change it back to the original carousel with NO NOTICE. It took over an hour again for our luggage to come out and it trickled in so slowly, that I ended up getting my bag a full two and a half hours after we landed. Awful experience."

Cons: "Frontier charges for the most basic amenities that other airlines provide (non alcoholic beverages and carry-on luggage space)."

Pros: "Not"
Cons: "Everything . Plus they lost my bag. Will neve fly Frontier again."

Pros: "It felt clean."
Cons: "Surprise charges for seat assignments and outrageous charges for carry on luggage. Uncomfortable sears with no leg room. Too many announcements, ads spoken through intercom."

Cons: "luggage was lost seating very cramped had to rush to board, almost missed connection"

Pros: "Delayed 2 hours with no update information. As a frustrated passenger asked for answers. Called all over the nation for help. Upon boarding, was told Frontier had the right not to serve me. Refunded my money and then i had to book through another airline at 3am... long story short, nightmare."
Cons: "All of it."

Pros: "Nothing"
Cons: "Everything"

Pros: "Friendly passengers around me"
Cons: "Long delay, no meals available, no water offered, nothing to read"

Pros: "Excellente"
Cons: "Excellent"

Pros: "nothing"
Cons: "everything. what has happened to frontier? wont fly them again"

Cons: "Really uncomfortable chairs that don't recline, no drink service included."

Cons: "Paying up to $60 for a carry on. Waiting on the runway for 30 minutes with no communication from the pilot when we landed in Denver."

Pros: "The bare bones frontier philosophy leaves nothing to like"
Cons: "Feeling like cattle"

Cons: "Delayed forced me to rebook with different carrier last minute"

Pros: "Cheapest airline ever"

Pros: "Nothing"
Cons: "Staff is rude, not considerate at all"

Cons: "I wish you will take cash payments for meal purchase"

Pros: "everything was great"
Cons: "nothing"

Pros: "seating too hard- need more cushioning"

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."

Pros: "Cheap, until you had to pay for bags and drinks."
Cons: "Had to wait for over 1/2 hour to disembark."

Cons: "Frontier nickles and dimes you."

Pros: "Very informative on where to go!"
Cons: "Not very informational on security policy"

Read more about Alaska Airlines
COVID-19 information

Safety measures for airlines flying from Seattle to San Francisco

Airlines flying from Seattle 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 on flights from Seattle to San Francisco

Mandatory masks

Masks required on board, masks provided on flights from Seattle to San Francisco

Social distancing seating

Middle seats unavailable to book on flights from Seattle to San Francisco

Pre-flight testing

Testing for antibodies, testing for symptoms for flights from Seattle to San Francisco

Book cheap flights from Seattle to San Francisco

Recent round-trip flight & bus deals

7/31
Sat
nonstop
Alaska Airlines
2h 13m
SEA - SFO
9/28
Tue
nonstop
Alaska Airlines
2h 09m
SFO - SEA
8/14
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Alaska Airlines
2h 15m
SEA - SFO
8/17
Tue
nonstop
Alaska Airlines
2h 16m
SFO - SEA
8/24
Tue
nonstop
Alaska Airlines
2h 15m
SEA - SFO
9/4
Sat
nonstop
Alaska Airlines
2h 20m
SFO - SEA
7/19
Mon
nonstop
Alaska Airlines
2h 13m
SEA - SFO
7/28
Wed
nonstop
Alaska Airlines
2h 08m
SFO - SEA
10/19
Tue
nonstop
Multiple Airlines
2h 01m
SEA - SFO
10/22
Fri
nonstop
Multiple Airlines
2h 05m
SFO - SEA
7/15
Thu
nonstop
Delta
2h 22m
SEA - SFO
8/12
Thu
nonstop
Delta
2h 18m
SFO - SEA
7/13
Tue
nonstop
Delta
2h 20m
SEA - SFO
7/20
Tue
nonstop
Delta
2h 18m
SFO - SEA
9/14
Tue
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Delta
2h 12m
SEA - SFO
9/18
Sat
nonstop
Delta
2h 23m
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7/21
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Multiple Airlines
14h 38m
SEA - SFO
7/24
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2h 08m
SFO - SEA
7/21
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Multiple Airlines
14h 38m
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7/28
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2h 08m
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7/13
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2h 07m
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7/13
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7h 42m
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15h 05m
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7/12
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19h 03m
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8/25
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United Airlines
6h 14m
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8/26
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2h 04m
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8/16
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Greyhound
19h 35m
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19h 20m
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18h 55m
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19h 20m
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Greyhound
22h 45m
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8/3
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22h 35m
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7/27
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30h 20m
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8/3
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22h 35m
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30h 20m
40H - C6O
7/14
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22h 35m
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7/8
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Greyhound
30h 20m
40H - C6O
7/14
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Greyhound
22h 35m
C6O - 40H
7/1
Thu
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Greyhound
30h 20m
40H - C6O
7/4
Sun
2 stops
Greyhound
41h 05m
C6O - 40H
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Recent one-way flight & bus deals

9/10
Fri
nonstop
Alaska Airlines
2h 10m
SEA - SFO
7/22
Thu
nonstop
Alaska Airlines
2h 13m
SEA - SFO
9/1
Wed
nonstop
Alaska Airlines
2h 09m
SEA - SFO
9/12
Sun
nonstop
Alaska Airlines
2h 10m
SEA - SFO
7/16
Fri
nonstop
Alaska Airlines
2h 13m
SEA - SFO
7/13
Tue
nonstop
Delta
2h 20m
SEA - SFO
7/21
Wed
1 stop
Frontier
14h 38m
SEA - SFO
7/6
Tue
1 stop
Frontier
19h 25m
SEA - SFO
8/9
Mon
1 stop
Frontier
23h 15m
SEA - SFO
7/21
Wed
1 stop
Multiple Airlines
11h 51m
SEA - SFO
7/28
Wed
1 stop
Multiple Airlines
11h 51m
SEA - SFO
7/26
Mon
nonstop
United Airlines
2h 08m
SEA - SFO
7/14
Wed
1 stop
American Airlines
11h 44m
SEA - SFO
7/20
Tue
2 stops
Multiple Airlines
20h 35m
SEA - C6O
7/19
Mon
2 stops
Greyhound
30h 20m
40H - C6O
8/6
Fri
2 stops
Greyhound
22h 45m
40H - C6O
8/5
Thu
2 stops
Greyhound
30h 20m
40H - C6O
7/5
Mon
2 stops
Multiple Airlines
36h 40m
SEA - C6O
7/5
Mon
2 stops
Multiple Airlines
20h 35m
SEA - C6O
7/5
Mon
2 stops
Multiple Airlines
20h 35m
SEA - C6O
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Compare transportation modes for Seattle to San Francisco

Average price Average duration
Flights $275 2h 01m
Buses $336 26h 05m
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