SEA - SFO

$61 Find Cheap Flights from Seattle to San Francisco

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to San Francisco departing on 8/23. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to San Francisco

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Francisco.
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to San Francisco.
Travelers love KAYAK
41,299,237 searches in the past 7 days on KAYAK

Save 20% or moreCompare multiple travel sites with one search.

Track pricesNot ready to book? Create a price alert for when prices drop.

Bundle and saveSave money when you bundle your flight + hotel.

Filter your dealsChoose cabin class, free Wi-Fi and more.

Flights Deals
Expert advice
Useful Info
Flights Deals

Cheap Flights from Seattle to San Francisco (SEA-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to San Francisco that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to San Francisco

Sat, Aug 23 - Sun, Aug 24
Hawaiian Airlines Logo
6:05 pm - 8:19 pmSEA-SFO
2h 14mnonstop
Hawaiian Airlines Logo
8:00 am - 2:26 pmSFO-SEA
6h 26m1 stop
$117Hawaiian Airlines
Find Deal
Fri, Aug 15 - Fri, Aug 22
Hawaiian Airlines Logo
9:40 pm - 11:59 pmSEA-SFO
2h 19mnonstop
Hawaiian Airlines Logo
9:19 pm - 11:35 pmSFO-SEA
2h 16mnonstop
$120Hawaiian Airlines
Find Deal
Sat, Aug 23 - Sun, Aug 24
Hawaiian Airlines Logo
3:55 pm - 6:09 pmSEA-SFO
2h 14mnonstop
Hawaiian Airlines Logo
8:00 am - 10:16 amSFO-SEA
2h 16mnonstop
$122Hawaiian Airlines
Find Deal
Wed, Aug 20 - Sat, Aug 23
Alaska Airlines Logo
1:40 pm - 3:52 pmSEA-SFO
2h 12mnonstop
Alaska Airlines Logo
4:52 pm - 7:09 pmSFO-SEA
2h 17mnonstop
$126Alaska Airlines
Find Deal
Wed, Aug 20 - Sat, Aug 23
Alaska Airlines Logo
3:55 pm - 6:09 pmSEA-SFO
2h 14mnonstop
Alaska Airlines Logo
10:08 am - 12:23 pmSFO-SEA
2h 15mnonstop
$127Alaska Airlines
Find Deal
Thu, Aug 21 - Sun, Aug 24
Frontier Logo
4:40 pm - 12:19 amSEA-SFO
7h 39m1 stop
Frontier Logo
5:45 am - 2:40 pmSFO-SEA
8h 55m1 stop
$134Frontier
Find Deal
Sat, Aug 16 - Sat, Aug 23
Delta Logo
7:28 am - 9:51 amSEA-SFO
2h 23mnonstop
Delta Logo
10:31 am - 12:46 pmSFO-SEA
2h 15mnonstop
$137Delta
Find Deal
Thu, Sep 4 - Sun, Sep 7
Frontier Logo
3:21 pm - 11:10 pmSEA-SFO
7h 49m1 stop
Frontier Logo
10:19 am - 5:39 pmSFO-SEA
7h 20m1 stop
$139Frontier
Find Deal
Sat, Aug 23 - Sun, Aug 24
Delta Logo
7:28 am - 9:51 amSEA-SFO
2h 23mnonstop
Delta Logo
5:55 am - 8:05 amSFO-SEA
2h 10mnonstop
$147Delta
Find Deal
Mon, Sep 8 - Wed, Sep 10
United Airlines Logo
5:35 pm - 7:47 pmSEA-SFO
2h 12mnonstop
United Airlines Logo
1:00 pm - 3:14 pmSFO-SEA
2h 14mnonstop
$179United Airlines
Find Deal
Expert advice

Expert advice for your flight from Seattle to San Francisco

 
Snippets provided in this section are AI-generated based on a summarization of KAYAK-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
KAYAK teamed up with top travel experts to share the best tips for your journey.
Airlines
ANA

ANA's 34-inch legroom in economy on 787-9 and 787-10 offers extra comfort.


ANA provides slippers in premium economy, enhancing comfort during flights.

Read more about ANAby Gabriel Leigh
Singapore Airlines

Singapore Airlines offers free Wi-Fi for all passengers, requiring a frequent flyer account.


Singapore's Book the Cook allows pre-ordering gourmet meals in premium cabins.

Alaska Airlines

Alaska Airlines' Wine Flies Free program allows free wine case check-in from select airports.


Alaska's 20-minute bag guarantee offers compensation if bags are delayed.

United Airlines

United's Economy Plus offers up to six inches more legroom than standard economy.


United's Priority Boarding ensures overhead bin space by placing you in Zone 2.

Delta

Delta offers free Wi-Fi for SkyMiles members on domestic flights, enhancing productivity.


Delta's Sky Priority check-in speeds up the process for premium cabin and elite status passengers.

Read more about Deltaby Stefanie Waldek
Airports
SEA

Use the SEA Spot Saver for expedited security screening without a paid program. Book online or via the flySEA app.

Read more about SEAby Harriet Baskas
SFO

Take BART from SFO for a cost-effective ride to popular SF neighborhoods like the Mission and Embarcadero.

Read more about SFOby Blane Bachelor
Our travel experts
Gabriel Leigh

Gabriel Leigh

Expert on ANA

Gabriel Leigh

Gabriel Leigh

Gabriel is a writer and video creator. As senior content producer for Flightradar24 and Monocle’s transport correspondent, he keeps a close eye on aviation in particular. He has also written travel articles for the likes of The New York Times. Born in New York but raised around the world, he now lives in Sweden. He’s been to 75 countries, flying 2.3 million miles on 113 airlines and through 234 airports in the process.

Read more
Chris Dong

Chris Dong

Expert on Singapore Airlines

Chris Dong

Chris Dong

Chris is a consumer travel reporter covering aviation, trending travel news, hotels, and loyalty programs—all for leading global publications like Travel + Leisure, The Washington Post, AFAR, and more. In addition to writing, Chris is a video host for Travel + Leisure, giving consumers an inside look at the latest in air travel.

Read more
Harriet Baskas

Harriet Baskas

Expert on Alaska Airlines and SEA

Harriet Baskas

Harriet Baskas

Harriet is an award-winning journalist who is happiest in an airport or an unusual museum. Her stories about airports, air travel, and the business of travel have appeared on NBC News, CNBC, USA TODAY, The Points Guy and other outlets. She is the creator of the StuckatTheAirport.com blog and the author of nine books. When not out on the road or exploring the latest airport amenities, she’s home in Seattle getting ready for the next adventure.

Read more
Stefanie Waldek

Stefanie Waldek

Expert on United Airlines and Delta

Stefanie Waldek

Stefanie Waldek

Stefanie Waldek is a freelance space, travel, and design writer based in Saratoga Springs, NY. Her words have appeared in Space.com, Travel + Leisure, Condé Nast Traveler, Architectural Digest, and House Beautiful, among other publications. An expert in aviation and expedition cruising, Stefanie is frequently up in the air or on the sea, likely en route to Antarctica or the Arctic.

Read more
Blane Bachelor

Blane Bachelor

Expert on SFO

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Useful Info

KAYAK's insights & trends for Seattle to San Francisco flights

Get data-powered insights and trends into flights from Seattle to San Francisco to help you find the cheapest flights, the best time to fly and much more.

Find cheap flights to San Francisco
Find cheap flights to San Francisco

Planning a trip from Seattle to San Francisco? KAYAK’s data-powered insights will help you find cheap flights. Learn the best time to fly, how early to book your ticket, and other tips to secure great prices.

How much is a round-trip flight from Seattle to San Francisco?

What’s the cheapest day of the week to fly from Seattle to San Francisco?

The average price of all round-trip flights from Seattle to San Francisco clicked on KAYAK for each day over the last 12 months.

If you are looking for a flight deal from Seattle to San Francisco, look for departures on Fridays and avoid leaving on a Sunday, as it's usually the priciest day. When flying back from San Francisco, Friday is the cheapest day to fly and Monday is the most expensive.

What is the cheapest month to fly from Seattle to San Francisco?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to San Francisco, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to San Francisco is September, where tickets cost $200 (return) on average. On the other hand, the most expensive months are June and December, where the average cost of round-trip tickets is $296 and $272 respectively.

How far in advance should I book a flight from Seattle to San Francisco?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to San Francisco, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to San Francisco, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 21 weeks before departure.

 AI-powered savings tips

KAYAK's tips to save more on a Seattle to San Francisco flight

Based on the data, it is generally cheapest to fly from Seattle to San Francisco on Saturdays in the month of October.

Day Choice: Opt for Saturday flights for the best rates.

Month Choice: Consider flying in October to save on airfare.

Booking Time: Book your flight at least 120 days in advance for the best deals.

Airline Choice: Frontier Airlines generally offers the cheapest flights for this route.

Flight Type: Direct flights are typically more expensive, consider flights with layovers to save money.

This feature is powered by ChatGPT: an OpenAI-developed artificial intelligence model trained with KAYAK proprietary data and third-party data not verified by KAYAK. 


Good to know

Low seasonJanuary
High seasonApril
Cheapest flight$61
Best time to beat the crowds with an average 12% drop in price.
Most popular time to fly with an average 1% increase in price.
Flight from Seattle to San Francisco

When to book flights from Seattle to San Francisco

Are your dates flexible? Find out the best times to travel from Seattle to San Francisco based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to San Francisco

  • What facilities are available for business travelers at San Francisco International Airport?

    While there is no designated business center at San Francisco International Airport, there are plenty of workstations located throughout its terminals. There are also Power Bars in the Terminal 2 Food Court where travelers can plug in their laptops and continue their work while on the go.

  • Can I fly from Seattle to San Francisco non-stop?

    Due to their close proximity, many airlines offer nonstop flights from Seattle to San Francisco. Some of the airlines offering such flights include Delta Air Lines, United Airlines, and Alaska Airlines. There are also one-stop flights available through airlines like jetBlue Airways, Alaska Airlines, and American Airlines, with layovers in cities such as Long Beach, Los Angeles, and Portland.

  • What is the quickest way from San Francisco International Airport to downtown San Francisco?

    Aside from renting or driving a personal vehicle, BART (Bay Area Rapid Transport) is the quickest way to get from San Francisco International Airport to the city. Terminal 3 hosts the airport’s BART station and is easily accessed via AirTrain from the airport’s other terminals.

  • Should I fly to San Francisco International Airport, Oakland International Airport, or San José International Airport?

    Both San Francisco International Airport and Oakland International Airport are connected to BART, making them ideal for travelers who plan to take public transportation after their flights from Seattle to San Francisco. The main difference between the two is that San Francisco is on the west side of the bay while Oakland is on the east. San José International Airport, on the other hand, is not connected via BART, but there are other public transport options available. However, the main reason to fly into San José is if your final destination is outside of the Bay Area, as the airport is located a bit further outside the Bay Area’s urban sprawl.

  • What is the easiest way of traveling out of San Francisco International Airport (SFO)?

    The best way to get out of SFO to Downtown San Francisco is via BART trains. They also connect to Oakland in addition to other areas within the Bay Area. With BART, you will avoid the traffic congestion associated with Bay area peak hours. The trains leave SFO frequently and will whisk you away from the airport in no time.

  • Can I rent a car at San Francisco International Airport?

    You can easily rent a car of your choice right from SFO. To access the SFO  Rental Car Center take the AirTrain Blue Line from any terminal. The main car rental brands at SFO include Avis, Alamo, Budget, Enterprise, Thrifty and others.

  • Does Seattle-Tacoma International Airport provide support for travelers with disabilities?

    Yes, SEA is fully equipped with facilities that offer easy accessibility by all travelers with special needs. Your airline will coordinate wheelchair services from the ticketing desk to the departures. The airport also features wheelchair accessible taxis and vans. Passengers may request curbside pick-up on the Skybridge 5 and Baggage Claim level.

  • Are there on-site hotels at San Francisco International Airport (SFO)?

    If you want to enjoy some food and drinks at SFO, you will head to The Grand Hyatt hotel located near the SFO entrance, parking garages and terminal buildings. You can enjoy quiet time here due to the soundproofed guest rooms.

  • Are there family amenities at the Seattle-Tacoma International Airport (SEA)?

    Yes, there are several restrooms for travelers who need assistance from their companions. They are located near Gate A1 of the International Terminal A. If you want to freshen up after light, head to level 3 of Ed Lee International Main Hall for shower facilities, ironing facilities, undergarments, nap rooms, and toiletries.

  • Are there pet amenities at the Seattle-Tacoma International Airport (SEA)?

    There are several pet relief areas equipped with trash bins, towel dispensers and waste bags for proper disposal. They are located in CONCOURSE D, N, S and Central Terminal as well as in the International Arrivals. Outside the main terminal, there are several pet relief areas specifically near the parking garage and both south and north ends. 

  • What is the cheapest flight from Seattle to San Francisco?

    In the last 3 days, the lowest price for a flight from Seattle to San Francisco was $61 for a one-way ticket and $117 for a round-trip.

  • Do I need a passport to fly between Seattle and San Francisco?

    Even though you are not required to have a passport, keep in mind that an official ID is needed to board the airplane.

  • Which airports will I be using when flying from Seattle to San Francisco?

    On your way to San Francisco, you’ll fly out from Seattle/Tacoma Intl. You’ll be landing at San Francisco.

  • Which airlines offer Wi-Fi service onboard planes from Seattle to San Francisco?

    Alaska Airlines, Hawaiian Airlines, and American Airlines offer inflight Wi-Fi service on the Seattle to San Francisco flight route.

  • Which aircraft models fly most regularly from Seattle to San Francisco?

    The Boeing 737-800 Passenger/BBJ2 (winglets) is the aircraft model that flies most regularly on the Seattle to San Francisco flight route.

  • Which airline alliances offer flights from Seattle to San Francisco?

    oneworld, SkyTeam, and Star Alliance are the airline alliances operating flights between Seattle and San Francisco, with oneworld being the most commonly used for this route.

  • On which days can I fly direct from Seattle to San Francisco?

    There are nonstop flights from Seattle to San Francisco on a daily basis.

  • Which is the best airline for flights from Seattle to San Francisco, Alaska Airlines or Delta?

    The two airlines most popular with KAYAK users for flights from Seattle to San Francisco are Alaska Airlines and Delta. With an average price for the route of $239 and an overall rating of 8.0, Alaska Airlines is the most popular choice. Delta is also a great choice for the route, with an average price of $206 and an overall rating of 8.0.

  • How does KAYAK find such low prices on flights from Seattle to San Francisco?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to San Francisco.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to San Francisco?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to San Francisco?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to San Francisco with an airline and back to Seattle with another airline. Booking your flights between Seattle and SFO can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to San Francisco?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to San Francisco from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

KAYAK’s top tips for finding a cheap flight from Seattle to San Francisco

  • Looking for a cheap flight? 25% of our users found flights on this route for $138 or less one-way and $234 or less round-trip.
  • 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.
  • Fly out of Seattle-Tacoma International Airport (SEA), the main airport serving the Seattle metropolitan area and enjoy numerous domestic airlines flying to San Francisco. You will fly in via San Francisco International Airport (SFO), a major gateway to California to quickly begin exploring San Francisco.
  • This flight route accounts for 1567 lb the average CO₂ emission per traveler. To fly eco friendly, book Alaska Airlines which invests in sustainable aviation fuels for lesser emissions. The Airline is known for more efficient aircrafts with advanced design features that help reduce the carbon footprint by over 50% percent.
  • Though the Seattle to San Francisco flight is not so long, you can take flights with stops if you have flexible schedules or are open to exploring new destinations. Spend a few hours at Dallas/Fort Worth (DFW) when you fly American Airlines, stop at LAX with Alaska Airlines or take some time in beautiful Sacramento (SMF) along the way.

Prefer to fly direct from Seattle to San Francisco?

 
Direct data is based off flight results for the next 60 days. Find direct flights from all airlines flying direct from Seattle/Tacoma Intl to San Francisco.
Find which airlines fly direct from Seattle/Tacoma Intl Airport to San Francisco Airport, which days they fly and book direct flights.

Direct departures

Seattle/Tacoma Intl to San Francisco

Monday

ANA, Aeromexico, Air France, +30 more

ANA, Aeromexico, +31 more

Tuesday

ANA, Aeromexico, Air France, +30 more

ANA, Aeromexico, +31 more

Wednesday

ANA, Aeromexico, Air China, +29 more

ANA, Aeromexico, +30 more

Thursday

ANA, Aeromexico, Air France, +32 more

ANA, Aeromexico, +33 more

Friday

ANA, Aeromexico, Air France, +27 more

ANA, Aeromexico, +28 more

Saturday

ANA, Aeromexico, Air China, +32 more

ANA, Aeromexico, +33 more

Sunday

ANA, Aeromexico, Air France, +30 more

ANA, Aeromexico, +31 more

See more direct flights

Direct returns

San Francisco to Seattle/Tacoma Intl

Monday

ANA, Aeromexico, Air France, +28 more

ANA, Aeromexico, +29 more

Tuesday

ANA, Aeromexico, Air France, +28 more

ANA, Aeromexico, +29 more

Wednesday

ANA, Aeromexico, Air China, +28 more

ANA, Aeromexico, +29 more

Thursday

ANA, Aeromexico, Air France, +30 more

ANA, Aeromexico, +31 more

Friday

ANA, Aeromexico, Air France, +26 more

ANA, Aeromexico, +27 more

Saturday

ANA, Aeromexico, Air China, +30 more

ANA, Aeromexico, +31 more

Sunday

ANA, Aeromexico, Air France, +29 more

ANA, Aeromexico, +30 more

See more direct flights

Reviews of the top 5 airlines serving from Seattle to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Seattle to San Francisco. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to San Francisco? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
Alaska AirlinesOverall score based on 10000 reviews
7.1Entertainment
8.5Crew
7.1Food
7.8Comfort
8.1Boarding
Airline reviews

Original flight was canceled, and the automatically booked second flight was immediately delayed. I arrived about 4 hours later than planned with only a $12 meal voucher that didn't fully cover a sandwich at airport prices.

2.0 MediocreAlvin, Jul 2025SEA - SJC
Read more Alaska Airlines reviews

Original flight was canceled, and the automatically booked second flight was immediately delayed. I arrived about 4 hours later than planned with only a $12 meal voucher that didn't fully cover a sandwich at airport prices.

It was very good and comfortable, Crew was also great

Good experience, although it was a little cramped being a tall person. Otherwise everything went smoothly and professionally though

Delay of more than 3 hours I didnt recieve neither a voucher for food Attention disaster

Flight was very warm. It felt like there was no working AC.

Passengers were not informed timely of delays. The staff appeared like they didn't really care about the passengers.

Both flights were delayed going to our destination and leaving, and communication about the delays was not great by the airlines, now the crews were phenomenal and great to be around!!

Delayed. It's not our first flight with them either, it's actually our 3rd and all 3 were delayed by hours each time. It was a myriad of delays. On one flight we boarded after being delayed for a little over an hr, only to be told we were going to sit in the plane for another hour before departing. Once landed, we waited another 40ish min to get to our gate. On another flight, flight was delayed just under 3 hrs but atleast we got to wait it out at the airport terminal. Its just a bad experience overall flying with Alaska Airlines.

It is very bad they do not give you money back

The only problem was the time delay. Kudos to the counter agent in Seattle. Very helpful and gracious.

Not a "Delta" issue, but a JFK issue: We booked a connecting flight with 3 1/2 hours between to clearn immigration and customs. Our inbound flight (BCN to JFK) was on the taxiway 45 minutes which ate into our layover time. Immigtration was insanely quick with the CBP MPC app; however, clearing TSA (again, after we were ALREADY cleared in Spain on the inbound international flight) took over 95 minutes. This left us with 10 minutes before boarding the connecting flight (JFK to SAN) to walk to the far end of Terminal 4 and try to find food. We didn't find any food that could promise to serve us in under 10 minutes so we boarded the Delta flight after coming off a plance and an 8-hour flight knowing that we wouldn't be served any food on the next 5 1/2 hour flight. I feel like Delta needs to put pressure on the JFK TSA to open more screening stations (by our count, we saw only 5 scanners open and a line of - as we said - over 90 minutes. The insult is that we WERE ALREADY SCREENED through TSA, but as you come off one flight into the USA, you have to go through the whole process again. It seems like if you have a connecting flight, there should be a way to pass through immigration and customs without needing to return through TSA.

There are 4 flights in consecutive gates with about the same departure time. Two flights were boarding at the same time. One was delayed or boarding would be happening at the same time. I am not sure what Delta and LAX need to do to have a better layout at the end of Terminal 2

Flight was delayed long enough that I was misding my connecting flight. The agents could not get me on a comparable flight, nor could they get me s Main Cabin seat I had paid for, nor could they get me on a comparable connecting flight. The gate agent would not issue meal vouchers, even though I was delayed over six hours! I had to spend over an hour and 15 minutes with customer service on the phone to See if they could get me on a better flight and get a meal voucher. Customer service was not helpful enough in trying to find alternate flights and it Ended up taking me 24 hours for a 12 hour trip!! Delta does not provide upgrades NOR will they even give you a pass for a few hours to their lounge. They claim that they do not issue daily passes to their lounge anymore. I call BS since this would be no extra cost to them to provide excellent customer service and give you a few hours to relax in comfort when you’re sitting in a crowded airport and your flight has been screwed up for that many hours.

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

This had nothing to do with Delta… The flights were on time and flawless. The service was excellent. We purchased seats in (aisle/middle) comfort plus since this was a cross country flight. Unfortunately, the woman seated at the window was 300+ pounds and, as might be expected, covered up about a third of the middle seat also. there was absolutely nothing that Delta could have done about that… I just don’t know what the answer should be. If you purchase a seat, you should should be able to use the entire seat and not just the portion that someone else is not sitting/oozing in. Disappointing…there should be something that could be done….I'm just not sure what solution could be.

Great staff. Wifi is terrible. Signing up for skylines is a painstaking process. Had to call customer service just to get my flight itinerary and confirmation sent to me. Consistent delays. A well staffed company that is run so poorly. Upper management needs to be renewed.

The crew was wonderful and attentive. The seats near exit row were restrictive. Offer healthy snacks please

I was unable to get a check im and get a boarding pass. I tried at the desk of the flight operator Alaska, was told to go to Hawaiian and almost had to go back to Alaskan. In the end inwas told to go thru security and directly to the gate without checking in. It would have been more helpful to have the details rather than walking all over the terminals trying to check in.

Good except that I couldn’t change seat and made me wait untill I checked in

Everything was great except for the delayed flight times (it was delayed twice).

Traveling with my 90 year old mother, the boarding process was great, the gate crew was very helpful and friendly. One of the flight attendants was kind enough to assist her to and from the restroom mid-flight and cater to any requests she had. I wish I flew Hawaiian Airlines more often, it was a great trip!

We were delayed at the SD gate for close to an hour before we were allowed to depart for SJ. Reason given was inadequate ground crew to move the plane from the gate.

Thanks to the supervisor Jose my pregnant wife and our family will not miss a very important ultrasound tomorrow. What he did was simply heroic. He needs to be promoted and praised. Please tell him our family appreciates him so so much!

Your crew shortage delayed departure by an hour resulting in us missing an event we had scheduled for that afternoon outside of Fresno.

Flight information board was not immediately available; however, it was not far from where I disembarked to my next flight.

Liked the crew and cleanliness. Terrible comfort (seats did not recline and located next to 3 bathrooms). Did not like the hidden fees, that now there is an additional fee to get a seat.

Tried using the check in email that Kayak sent out and it wouldn’t allow me to check in. It took me about 40 minutes on a chat with Alaska Airlines to get the proper link to get my boarding pass.

Boarded plane and then delayed 1.5 hours while on the plane

My flight was delayed a very short period of time but they did not hold my connecting flight to San Diego, also through United. So they closed the doors before we got off our plane. They would only have to help the door open for another five to ten minutes. So I missed a court deadline for a manditory mediation settlement conference for my client. I had to get an associate to be there in person and be on the phone with him relaying what he needs to do the entire time. The court was very upset with me and so was my client. United cannot be trusted.

Really good 😊 the woman at the gate entrance was a little rude checking in our carry-on but i dont think she worked for the airline, she worked for the airport at sacramento, other than that amazing.

Boarding was mayhem. Late boarding by 15 minutes because of lack of staff (missing 1 flight attendant. We had to wait for an arrival of another plane before we could board). Flight was a little rough, but cannot blame on airlines.

United out of SFO is having issues with catering so none of our meals were loaded on the plane and no offer of compensation for our tickets purchased was offered.

A bit rush for transit. Food and entertainment are not available

The gate was too far away for the connecting flight

Generally good. The aisles have gotten narrower which can slow down boarding. Flight crew was great! Healthier complimentary snacks would be appreciated. Due to earthquake in San Francisco we had to circle in air space for a bit but then had a smooth landing. I laud the flight crew for their patience ;)

The agents was very rude and they charged me $50 for a carry-on bag saying that it was too big and then I saw someone going on a plane with the same size bag as me

For the most part united was a good experience, how ever when they came by with the snacks and water, they completely passed by my wife and I. As we were in separate rows. On a 5 hr flight we were not offered water

We’ve all seen the YouTube vids of out of control passengers. But this was an instance of a highly aggressive, bully flight attendant. Yelling in the face of a vet with PTSD who was texting their family. And no , we had not yet been instructed to put our phones in airplane mode. My suggestion is that you should pay whatever difference there is in order to avoid Frontier airlines. Additionally, after 3hrs trying to get customer service frontier offered a $25 voucher. I declined. This experience was so traumatic. To be verbally assaulted and abused by a flight attendant that has the power to say “boo” and I miss my flight ( which was to a family member’s funeral ). Frontier is unsafe and I cannot impress enough how much I discourage anyone ( esp those with any kind of disability like PTSD ) flying on Frontier.

Very bad! No good service delayed my second connection flight

We had to wait in line over an hour just to check our bags. It's a good thing we were so early to the airport. Only one clerk was working and the line was around the corner and down the hall. No good. I felt bad for her. Not sure how she kept her sanity with all the upset people. Then we get to our gate and there is no seating. Everyone was standing. Then I realize it is not a gate at all, we still have to be shuttled to our airplane. Ugh. Then we were late taking off and missed a window of opportunity before the airport runways were shut down for some reason. (not frontier's fault the runway shut down.) The seats on the airline are crammed and there is no cushion. Never had a tighter seating arrangement while flying. My 6' 4" husband was absolutely miserable the whole time with knees digging in to the seat in front of him. You think you are getting a good deal on a ticket, and then wham! I had to pay 75 dollars for our checked bags and 75 dollars for a carry on. No other airline does that!!! And also, there is a 40 pound weight limit on checked bags... Would have been cheaper flying with another airline, and I would have at least gotten a snack and drink. Was thankful for the tiny cup of water at least.

They canceled flight. Hard to believe there was even a plane incoming for us to get on

No way to get boarding pass on my phone. In order to print the bag ticket a boarding pass is needed. Asked the agent to print me one, they said they typically do not due this as its so much work. I showed the email confirmation and I asked how i could do it my self the agent replied he did not know as there was no link. The flight was delayed due to an attendant forgetting to come to work. On the flight no drinks were offered only for purchase meals.

No way to get boarding pass on my phone. In order to print the bag ticket a boarding pass is needed. Asked the agent to print me one, they said they typically do not due this as its so much work. I showed the email confirmation and I asked how i could do it my self the agent replied he did not know as there was no link. On the flight no drinks were offered only for purchase meals.

Plane was down graded and I lost my uncharged exit row with more leg room. No mention or offer of refund from podium. Flight attendant was nice to explain this happens often and that I could request a refund via online form submission. I did this and have heard nothing back.

Horrendous. I do not recommend Frontier. The passengers lack manners and decency, and the flight attendants lack professionalism. If I wasn’t in a bind to fly with 48 hours notice for a job interview, I would not have selected a flight with Frontier and I never plan to fly with them in the future.

The seats were hard molded plastic covered in plastic vinyl. And the scam to charge people extra to sit together. Don’t they know we can just ask someone to trade seats. And watching the staff separate young children from parents… super classy. We had to guilt them into offering up our seats. This companies policies suck. Don’t give them your money.

I’ve never traveled on Frontier before. If you want basic, no frills, friendly service at great prices then give them a fly!

Everything you need to know for your flight from Seattle to San Francisco

Other airlines flying from Seattle to San Francisco

Flights from the other most popular airlines that fly from Seattle to San Francisco according to KAYAK users. Prices are the lowest found on KAYAK over the last 7 days. Price and availability are not guaranteed.

Not what you’re looking for? Find thousands of other hotels, flights, car rentals and package deals with KAYAK.