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Find Cheap Flights from San Francisco to Seattle/Tacoma Intl (SFO - SEA)

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San Francisco to Seattle/Tacoma Intl Flight Information

Avg. Flight Duration 2h 18m
Flights Arrive in Seattle/Tacoma Intl
Flights Depart from San Francisco
Flight Price $129
Distance 679 miles
Airlines Delta, Alaska Airlines, United

Good to Know

Low Season:
January
Best time to beat the crowds
3%
expected price decrease
High Season:
July
Most popular time to fly
10%
expected price increase
Average Price:
$166
(avg. price over the last 2 weeks)
Good Deal:
$108
or less (round trip)

When to Book Flights from San Francisco to Seattle/Tacoma Intl

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 $108 or less.
The cheapest flight from San Francisco to Seattle/Tacoma Intl was found 59 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 June, July and August. The cheapest month to fly is January.
On average*, there is no price difference when choosing to fly in the morning or the evening on this flight route.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking San Francisco to Seattle/Tacoma Intl Flights

How long does a flight from San Francisco to Seattle/Tacoma Intl take?
An average nonstop flight takes 2h 06m, covering a distance of 679 miles.
How many flights are there between San Francisco and Seattle/Tacoma Intl?
There are 2,138 (nonstop) flights between San Francisco and Seattle/Tacoma Intl per week, averaging 307 per day.
Which airlines provide the cheapest flights from San Francisco to Seattle/Tacoma Intl?
In the past 3 days, the cheapest round-trip tickets were found on Delta ($129), Alaska Airlines ($145) and United ($167).
Do I need a passport to fly between San Francisco and Seattle/Tacoma Intl?
No.
Which airlines fly most frequently between San Francisco and Seattle/Tacoma Intl?
Alaska Airlines (39 times daily), Air New Zealand (25 times daily), United (21 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly San Francisco to Seattle/Tacoma Intl?
For San Francisco to Seattle/Tacoma Intl, Saturday is the cheapest day to fly on average and Thursday is the most expensive. Flying from Seattle/Tacoma Intl back to San Francisco, the best deals are generally found on Saturday, with Thursday being the most expensive.

Book cheap flights from San Francisco to Seattle/Tacoma Intl (round-trip)

Airports
Origin
San Francisco
$129
only
$129
Destination
Seattle
$129
only
$129
Sat, Sep 8
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 26m
Tue, Sep 11
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 30m
Trip: 4 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
SFO
SEA
Excellent 10.0

The t.v. 's at each seat

Nothing

SFO
SEA
Good 6.3

small plane, good crew

baggage check: very long lines and wait time. poor organization

SFO
SEA
Excellent 10.0

Had the whole Comfort section to myself!

JFK
TPA
Okay 4.0

They ran out of blankets, earphones on the flight

LAX
TUS
Okay 5.6

The bag service

The flight delays

Tue, Nov 6
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 06m
Sun, Nov 11
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 21m
Trip: 6 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 309 reviews
Overall
8.6
Boarding
8.6
Comfort
8.3
Crew
8.9
Entertainment
7.9
Food
7.9
SFO
SEA
Excellent 10.0

Alaska is great as always and try to fly with them when traveling!

SFO
SEA
Okay 5.6

Arriving at destination

The flight was delayed 90 minutes and there was very little communication regarding why. It would have been less frustrating if we knew the reason for the delay.

SFO
SEA
Mediocre 2.3

There is nothing about this flight that my girlfriend and I liked. This was the worst experience with an airline either of us have ever experienced.

We didn't like that we were delayed so long that we missed our connecting flight. We were delayed upwards of 3.5 hours and watched a flight going to the same place that was supposed depart 1 hour after us, and it left 30 minutes before us.

SFO
SEA
Okay 4.6

Free prosecco

Took an hour to leave

SFO
SEA
Excellent 10.0

Nothing to complain about. It was comfortable.

Wed, Dec 19
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 10m
Sun, Dec 23
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 11m
Trip: 5 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 256 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
SEA
Good 6.0

The fact that we actually left.

Delayed and upset passengers. Bad breath from passengers circulating in the AC. FA we're okay nothing above and beyond.

SFO
SEA
Excellent 9.0

Bags separated at boarding when there was overhead space left on plane and gate agent saying "no space left"...

SFO
SEA
Mediocre 2.0

Second mechanical delay for me on this trip with United and the plane felt very old and rickity. Extremely delayed into Seattle until 2:40am

SFO
SEA
Okay 5.6

Good boarding

Delay and no food or movies

SFO
SEA
Mediocre 2.0

P

Wed, Sep 26
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 19m
Sat, Oct 13
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 21m
Trip: 18 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
SFO
SEA
Mediocre 2.6

I like Delta but this crew had such a shi**y attitude it was contagious. Yikes!

The gate staff and the flight staff. Rude

SFO
SEA
Good 6.0

The boarding was quick and the gate agent was efficient

We not only left 45 minutes late, but there was no beverage service on the flight.

JFK
TPA
Okay 4.0

They ran out of blankets, earphones on the flight

SFO
SEA
Okay 5.3

Quick boarding

The delta comport seats were not comfort seats were hardly comfortable and the leg room wasn't worth paying for.

SFO
SEA
Okay 5.2

Free drinks

Corn nuts for snack. I'm allergic to corn. I get people want snacks on a flight and you can't make everyone happy. It was ok. I just said no to them.

Sat, Oct 6
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 23m
Tue, Oct 9
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 16m
Trip: 4 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
SFO
SEA
Good 6.3

small plane, good crew

baggage check: very long lines and wait time. poor organization

LAX
TUS
Okay 5.6

The bag service

The flight delays

SFO
SEA
Okay 4.3

One lavatory didn't work and we had to use the nathroom for first class..couldnt access bathroom half of the flight

JFK
TPA
Okay 4.0

They ran out of blankets, earphones on the flight

SFO
SEA
Excellent 10.0

Had the whole Comfort section to myself!

Thu, Nov 15
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 22m
Sun, Nov 18
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 21m
Trip: 4 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 309 reviews
Overall
8.6
Boarding
8.6
Comfort
8.3
Crew
8.9
Entertainment
7.9
Food
7.9
SFO
SEA
Okay 5.6

Arriving at destination

The flight was delayed 90 minutes and there was very little communication regarding why. It would have been less frustrating if we knew the reason for the delay.

SFO
SEA
Excellent 10.0

Nothing to complain about. It was comfortable.

SFO
SEA
Okay 4.6

Free prosecco

Took an hour to leave

SFO
SEA
Excellent 10.0

Check in was easy. I love the way you can order from the screen infront of your seat food and drinks. In addition; you can select movies. Everyone was very nice and professional. I usually fly with jetBlue, but today I was so impressed I am considering changing.

SFO
SEA
Excellent 10.0

Alaska is great as always and try to fly with them when traveling!

Sat, Nov 3
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 23m
Sat, Nov 10
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 28m
Trip: 8 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
LAX
TUS
Okay 5.6

The bag service

The flight delays

SFO
SEA
Okay 4.3

One lavatory didn't work and we had to use the nathroom for first class..couldnt access bathroom half of the flight

SFO
SEA
Excellent 9.3

Individual screen and USB port

No issues that could be controlled I.e. Person in seat in front for mine leaning way ......

SFO
SEA
Okay 5.2

Free drinks

Corn nuts for snack. I'm allergic to corn. I get people want snacks on a flight and you can't make everyone happy. It was ok. I just said no to them.

SFO
SEA
Mediocre 2.6

I like Delta but this crew had such a shi**y attitude it was contagious. Yikes!

The gate staff and the flight staff. Rude

Sun, Dec 23
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 10m
Mon, Dec 31
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 10m
Trip: 9 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 256 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
SFO
SEA
Mediocre 2.0

On time.

Impolite gate crew, screen and wifi not working. No outlet at seat. United has successfully become Spirit's number one competitor for worst airline.

SFO
SEA
Excellent 9.0

Bags separated at boarding when there was overhead space left on plane and gate agent saying "no space left"...

SFO
SEA
Okay 4.6

Entertainment cut in/out

SFO
SEA
Okay 5.6

Good boarding

Delay and no food or movies

SFO
SEA
Mediocre 2.0

In Osaka I was not able to get a boarding pass for this last leg. In SF United and Air China were both not able to give me a boarding pass because I was not listed in their system. I have no idea why. Very frustrating.

Wed, Aug 29
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 21m
Wed, Sep 5
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 20m
Trip: 8 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
SFO
SEA
Good 6.0

The boarding was quick and the gate agent was efficient

We not only left 45 minutes late, but there was no beverage service on the flight.

JFK
TPA
Okay 4.0

They ran out of blankets, earphones on the flight

SFO
SEA
Okay 5.2

Free drinks

Corn nuts for snack. I'm allergic to corn. I get people want snacks on a flight and you can't make everyone happy. It was ok. I just said no to them.

SFO
SEA
Okay 4.3

One lavatory didn't work and we had to use the nathroom for first class..couldnt access bathroom half of the flight

SFO
SEA
Excellent 10.0

Had the whole Comfort section to myself!

Mon, Sep 17
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 17m
Sat, Sep 22
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 21m
Trip: 6 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
SFO
SEA
Okay 5.3

Quick boarding

The delta comport seats were not comfort seats were hardly comfortable and the leg room wasn't worth paying for.

SFO
SEA
Excellent 10.0

Had the whole Comfort section to myself!

SFO
SEA
Good 6.0

The boarding was quick and the gate agent was efficient

We not only left 45 minutes late, but there was no beverage service on the flight.

SFO
SEA
Okay 4.3

One lavatory didn't work and we had to use the nathroom for first class..couldnt access bathroom half of the flight

LAX
TUS
Okay 5.6

The bag service

The flight delays

Wed, Nov 14
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 14m
Tue, Nov 27
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 27m
Trip: 14 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
SFO
SEA
Excellent 10.0

Had the whole Comfort section to myself!

SFO
SEA
Good 6.0

The boarding was quick and the gate agent was efficient

We not only left 45 minutes late, but there was no beverage service on the flight.

SFO
SEA
Excellent 9.3

Individual screen and USB port

No issues that could be controlled I.e. Person in seat in front for mine leaning way ......

SFO
SEA
Okay 4.3

One lavatory didn't work and we had to use the nathroom for first class..couldnt access bathroom half of the flight

SFO
SEA
Excellent 10.0

The t.v. 's at each seat

Nothing

Mon, Dec 3
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 23m
Wed, Dec 5
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 23m
Trip: 3 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
SFO
SEA
Okay 5.2

Free drinks

Corn nuts for snack. I'm allergic to corn. I get people want snacks on a flight and you can't make everyone happy. It was ok. I just said no to them.

SFO
SEA
Good 6.0

The boarding was quick and the gate agent was efficient

We not only left 45 minutes late, but there was no beverage service on the flight.

SFO
DTW
Okay 4.6

The flight attendants were very kind and hoped to make up for the pilot’s negligence.

Boarding was weird with a lack of overhead bins and then the pilot was inconsistent with updates to safety issues. We were delayed by an hour and twenty mins and then had to wait on the tarmac for another plane to leave the gate. Feels like I wasted two hours in limbo.

SFO
SEA
Excellent 9.3

Individual screen and USB port

No issues that could be controlled I.e. Person in seat in front for mine leaning way ......

JFK
TPA
Okay 4.0

They ran out of blankets, earphones on the flight

Wed, Feb 6
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 20m
Sat, Feb 9
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 17m
Trip: 4 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
JFK
TPA
Okay 4.0

They ran out of blankets, earphones on the flight

SFO
DTW
Okay 4.6

The flight attendants were very kind and hoped to make up for the pilot’s negligence.

Boarding was weird with a lack of overhead bins and then the pilot was inconsistent with updates to safety issues. We were delayed by an hour and twenty mins and then had to wait on the tarmac for another plane to leave the gate. Feels like I wasted two hours in limbo.

SFO
SEA
Excellent 10.0

Had the whole Comfort section to myself!

SFO
SEA
Okay 5.2

Free drinks

Corn nuts for snack. I'm allergic to corn. I get people want snacks on a flight and you can't make everyone happy. It was ok. I just said no to them.

SFO
SEA
Mediocre 2.6

I like Delta but this crew had such a shi**y attitude it was contagious. Yikes!

The gate staff and the flight staff. Rude

Wed, Aug 29
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 21m
Sun, Sep 2
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 12m
Trip: 5 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
SFO
SEA
Excellent 10.0

The t.v. 's at each seat

Nothing

SFO
DTW
Okay 4.6

The flight attendants were very kind and hoped to make up for the pilot’s negligence.

Boarding was weird with a lack of overhead bins and then the pilot was inconsistent with updates to safety issues. We were delayed by an hour and twenty mins and then had to wait on the tarmac for another plane to leave the gate. Feels like I wasted two hours in limbo.

JFK
TPA
Okay 4.0

They ran out of blankets, earphones on the flight

SFO
SEA
Okay 4.3

One lavatory didn't work and we had to use the nathroom for first class..couldnt access bathroom half of the flight

SFO
SEA
Good 6.3

small plane, good crew

baggage check: very long lines and wait time. poor organization

Thu, Aug 30
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 15m
Mon, Sep 3
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 12m
Trip: 5 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 309 reviews
Overall
8.6
Boarding
8.6
Comfort
8.3
Crew
8.9
Entertainment
7.9
Food
7.9
SFO
SEA
Excellent 10.0

Always prompt and quality service

SFO
SEA
Excellent 10.0

I love that it was still a Virgin plane - please keep them as long as you can!

Happy with everything!

SFO
SEA
Excellent 10.0

Nothing to complain about. It was comfortable.

SFO
SEA
Okay 5.0

If there was a less than one star that is what they deserve. SFO flight was late. They gave away my seat on my connection to Kalispell. They basically blamed me for being late and not being there on time. Two others from my flight were allowed to make the connection but told me that they gave my seat away because I was late. We all showed up at the same time from the late flight. I talked to 3 people including customer service and did not get a single “I’m Sorry”. Do they not communicate with each other when a flight is late and they have passengers for connections running late? They told me they don’t talk. The best they can do is put me standby for 9:30 flight and if I cannot get on that flight I have to wait until morning. My daughter is in a competition tomorrow morning and thanks to Alaska Airlines I’m going to miss it. I’m sitting here writing this review, paying for a dinner I should not be paying for and probably searching out a hotel room until morning when I can catch a flight. Unbelievable the lack of empathy.

SFO
SEA
Mediocre 2.0

So bad customer service

Wed, Aug 29
SFO
San Francisco
SEA
Seattle/Tacoma Intl
2h 21m
Fri, Aug 31
SEA
Seattle/Tacoma Intl
SFO
San Francisco
2h 26m
Trip: 3 days
8.0ExcellentShow reviews
Overall 8.0 Excellent
Based on 27 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
SFO
SEA
Good 6.0

The boarding was quick and the gate agent was efficient

We not only left 45 minutes late, but there was no beverage service on the flight.

SFO
DTW
Okay 4.6

The flight attendants were very kind and hoped to make up for the pilot’s negligence.

Boarding was weird with a lack of overhead bins and then the pilot was inconsistent with updates to safety issues. We were delayed by an hour and twenty mins and then had to wait on the tarmac for another plane to leave the gate. Feels like I wasted two hours in limbo.

SFO
SEA
Okay 5.2

Free drinks

Corn nuts for snack. I'm allergic to corn. I get people want snacks on a flight and you can't make everyone happy. It was ok. I just said no to them.

SFO
SEA
Excellent 10.0

The t.v. 's at each seat

Nothing

SFO
SEA
Okay 4.3

One lavatory didn't work and we had to use the nathroom for first class..couldnt access bathroom half of the flight

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