Find Cheap Flights from Lambert-St Louis to San Francisco (STL - SFO)

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Good to Know

Low Season:
September
Best time to beat the crowds
1%
expected price decrease
High Season:
June
Most popular time to fly
4%
expected price increase
Average Price:
$385
(avg. price over the last 2 weeks)
Good Deal:
$288
or less (round trip)

When to Book Flights from Lambert-St Louis to San Francisco

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 $287 or less.
The cheapest flight from Lambert-St Louis to San Francisco was found 56 days before departure, on average.
Book at least 2 weeks before departure in order to get a below-average price.
High season is considered to be May, June and July. The cheapest month to fly is September.
Morning departure is around 18% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Lambert-St Louis to San Francisco Flights

How long does a flight from Lambert-St Louis to San Francisco take?
An average nonstop flight takes 4h 23m, covering a distance of 1732 miles.
How many flights are there between Lambert-St Louis and San Francisco?
There are 56 (nonstop) flights between Lambert-St Louis and San Francisco per week, averaging 8 per day.
Which airlines provide the cheapest flights from Lambert-St Louis to San Francisco?
In the past 3 days, the cheapest round-trip tickets were found on Frontier ($178), United ($331) and Delta ($348).
Do I need a passport to fly between Lambert-St Louis and San Francisco?
No.
Which airlines fly most frequently between Lambert-St Louis and San Francisco?
United (3 times daily), Southwest (2 times daily), Asiana Airlines (2 times daily) are the most frequent flyers on this route.
What’s the cheapest day of the week to fly Lambert-St Louis to San Francisco?
For Lambert-St Louis to San Francisco, Tuesday is the cheapest day to fly on average and Friday is the most expensive. Flying from San Francisco back to Lambert-St Louis, the best deals are generally found on Friday, with Thursday being the most expensive.

Book cheap flights from Lambert-St Louis to San Francisco (round-trip)

Airports
Origin
St. Louis
$178
only
$178
Destination
San Francisco
$178
only
$178
Tue, Feb 27
STL
SFO
7h 15m
Fri, Mar 2
SFO
STL
23h 13m
Trip: 4 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33843 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
TPA
LAS
Okay 4.3

Very reasonable price.

You literally have to pay for even the basic things, including for seats to recline. Cushion on seats thin and seats don't recline. 5hrs flight and No entertainment, no tv, no radio, no complimentary food...they offered a cup of water.

PHL
DEN
Mediocre 2.0

This is actually almost a funny question because Frontier is the worst Airlines well actually that's not true spirit is the worst Airlines the seats are uncomfortable it takes about an hour and a half to just put your bags and baggage drop and then when you get on the plane They don't serve you anything they have no entertainment your crowded in can't move people are rude worst hairlines ever

Every single thing

BUF
MCO
Mediocre 3.3

The service was Ok, but our flight was 4 hours delayed and it wasn't mechanical or weather related delay, the airline made a scheduling error, we almost missed our car rental and we didn't get to our destination til really late at night when it should been there in the daytime. Overall, won't fly with them again

DEN
SFO
Mediocre 2.0

The crew was rude to the passengers. They charge form 9$ to 40$ for seat selection. Charge for a Carry on bag (anything that doesn't fit under your seat). The flights had maintenance issue, hence delayed. I will absolutely avoid traveling with frontier in the future.

ISP
MIA
Excellent 10.0

Great flight from Islip to MIA. Looked at another review about water on flights and I was told by the crew that water is FREE!

Seats are small but newly redesigned.

Sun, Apr 1
STL
SFO
4h 40m
Tue, Apr 3
SFO
STL
4h 01m
Trip: 3 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 18 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
STL
SFO
Good 7.6

Crew members were awesome and very attentive both at the airport and on board.

LAX
LHR
Excellent 10.0

United Airlines team and the plaine were brilliant.

STL
SFO
Good 6.6

smooth flight, good service

hold up to board family with 2 much luggage, overhead bins 2 small

STL
SFO
Excellent 8.0

Dinner would have been nice on a 5pm-9pm flight. Entertainment N/A

FSD
DEN
Mediocre 2.0

Friendly crew.

Stuck in Denver because our flight was delayed so we missed our connection to Houston. Couldn’t get a hotel voucher because they are claiming a weather delay (which there was none).

Fri, May 25
STL
SFO
7h 00m
Mon, May 28
SFO
STL
8h 10m
Trip: 4 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16027 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
DTW
YOW
Excellent 9.3

Please see above. Sherry was amazing

Plane was small and older but it was a short flight

ATL
MEX
Excellent 10.0

Flight was on time, crew was friendly, plane was clean, and boarding was painless and efficient. Food was served which was a huge plus. I appreciate having a choice of almonds for a snack.

BOS
JFK
Excellent 9.3

The volume controls on the tv we’re pretty poor. Was either too loud or too soft with only 5-6 volume settings.

BOS
ATL
Okay 4.0

Comfort Plus allowed us to board early, useful USB ports.

ECP
ATL
Excellent 9.6

We have been on 6 flights over the last 8 days, all with Delta and we have already started telling people how wonderful the service was. Sherry on this last flight was amazing, working so hard all by herself as our flight attendant. We were very impressed. And the pilots all came out to say goodbye and thank you. All very nice...esp for me who needed some wheelchair assistance. We will certainly fly with you again in the future.

Smaller plane but ok for short flight

Thu, Jul 26
STL
SFO
6h 40m
Tue, Jul 31
SFO
STL
3h 59m
Trip: 6 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Feb 28
STL
SFO
12h 08m
Sun, Mar 4
SFO
STL
10h 06m
Trip: 5 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33843 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
ORD
RSW
Good 6.0

Crew was super nice

Delayed 3 hours, boarded and was told would be another 30minutes because of mechanical issues.

MCO
CLT
Mediocre 3.3

The flight was ok

First of all the check in lady was rude and unprofessional. The company lost y luggage resulting in extra charges When I was looking for assistance mr Prince was extremely rude, rolling the eyes and not providing support, I was lost and seeking for guidance and I had to figure it out by myself

DEN
ORD
Excellent 9.6

They left me alone.

Fold down tables are tiny

BUF
MCO
Mediocre 3.3

The service was Ok, but our flight was 4 hours delayed and it wasn't mechanical or weather related delay, the airline made a scheduling error, we almost missed our car rental and we didn't get to our destination til really late at night when it should been there in the daytime. Overall, won't fly with them again

IAD
SAT
Mediocre 3.6

The crew was helpful and apologetic.

They purposefully understaffed the check in counter, which you have to use. They charge for every little thing, even carry on bags and snacks. The seats might as well be lawn chairs. They are so close together everyone onboard will die from head injuries if there's an accident. I'll fly Southwest from now on.

Thu, Apr 12
STL
SFO
16h 15m
Wed, Apr 18
SFO
STL
19h 39m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33843 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
BUF
MCO
Good 7.3

Flight was great. Checkin etc was great

PHL
DEN
Mediocre 2.0

This is actually almost a funny question because Frontier is the worst Airlines well actually that's not true spirit is the worst Airlines the seats are uncomfortable it takes about an hour and a half to just put your bags and baggage drop and then when you get on the plane They don't serve you anything they have no entertainment your crowded in can't move people are rude worst hairlines ever

Every single thing

ISP
MIA
Excellent 10.0

Great flight from Islip to MIA. Looked at another review about water on flights and I was told by the crew that water is FREE!

Seats are small but newly redesigned.

IAD
SAT
Mediocre 3.6

The crew was helpful and apologetic.

They purposefully understaffed the check in counter, which you have to use. They charge for every little thing, even carry on bags and snacks. The seats might as well be lawn chairs. They are so close together everyone onboard will die from head injuries if there's an accident. I'll fly Southwest from now on.

DEN
SFO
Mediocre 2.0

The crew was rude to the passengers. They charge form 9$ to 40$ for seat selection. Charge for a Carry on bag (anything that doesn't fit under your seat). The flights had maintenance issue, hence delayed. I will absolutely avoid traveling with frontier in the future.

Sat, May 5
STL
SFO
16h 26m
Fri, May 11
SFO
STL
12h 07m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33843 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
BUF
MCO
Good 7.3

Flight was great. Checkin etc was great

DEN
SFO
Mediocre 2.0

The crew was rude to the passengers. They charge form 9$ to 40$ for seat selection. Charge for a Carry on bag (anything that doesn't fit under your seat). The flights had maintenance issue, hence delayed. I will absolutely avoid traveling with frontier in the future.

TPA
LAS
Okay 4.3

Very reasonable price.

You literally have to pay for even the basic things, including for seats to recline. Cushion on seats thin and seats don't recline. 5hrs flight and No entertainment, no tv, no radio, no complimentary food...they offered a cup of water.

MCO
CLT
Mediocre 3.3

The flight was ok

First of all the check in lady was rude and unprofessional. The company lost y luggage resulting in extra charges When I was looking for assistance mr Prince was extremely rude, rolling the eyes and not providing support, I was lost and seeking for guidance and I had to figure it out by myself

DCA
DEN
Excellent 8.0

Friendly staff

Didn't like I wasn't offered a cup of water and they nickel and dime you for EVERYTHING!

Sat, Mar 3
STL
SFO
12h 04m
Mon, Mar 5
SFO
STL
8h 18m
Trip: 3 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33843 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MCO
CLT
Mediocre 3.3

The flight was ok

First of all the check in lady was rude and unprofessional. The company lost y luggage resulting in extra charges When I was looking for assistance mr Prince was extremely rude, rolling the eyes and not providing support, I was lost and seeking for guidance and I had to figure it out by myself

PHL
DEN
Mediocre 2.0

This is actually almost a funny question because Frontier is the worst Airlines well actually that's not true spirit is the worst Airlines the seats are uncomfortable it takes about an hour and a half to just put your bags and baggage drop and then when you get on the plane They don't serve you anything they have no entertainment your crowded in can't move people are rude worst hairlines ever

Every single thing

IAD
SAT
Mediocre 3.6

The crew was helpful and apologetic.

They purposefully understaffed the check in counter, which you have to use. They charge for every little thing, even carry on bags and snacks. The seats might as well be lawn chairs. They are so close together everyone onboard will die from head injuries if there's an accident. I'll fly Southwest from now on.

ISP
MIA
Excellent 10.0

Great flight from Islip to MIA. Looked at another review about water on flights and I was told by the crew that water is FREE!

Seats are small but newly redesigned.

DCA
DEN
Excellent 8.0

Friendly staff

Didn't like I wasn't offered a cup of water and they nickel and dime you for EVERYTHING!

Thu, Jun 21
STL
SFO
4h 23m
Mon, Jun 25
SFO
STL
3h 59m
Trip: 5 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 18 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.4
STL
SFO
Okay 5.0

The delay. It was approximately a 2 hour delay getting to Arcata.

STL
SFO
Mediocre 2.0

Flight cancelled due to mechanical, re-booked on Delta who had to re-book me on Alaska due to mechanical. An 8 hr trip turned to 22hrs.

IAD
GVA
Excellent 10.0

Best flight I have ever experienced!

Nothing

STL
SFO
Excellent 8.0

All the crew were friendly and accommodating.

Waiting so long for the flight to actually take off. Very late !

STL
SFO
Excellent 8.3

Everything was on time.

The wifi did not work

Thu, Aug 23
STL
SFO
7h 39m
Tue, Aug 28
SFO
STL
8h 15m
Trip: 6 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 16027 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.5
Food
7.4
BOS
ATL
Okay 4.0

Comfort Plus allowed us to board early, useful USB ports.

ECP
ATL
Excellent 9.6

We have been on 6 flights over the last 8 days, all with Delta and we have already started telling people how wonderful the service was. Sherry on this last flight was amazing, working so hard all by herself as our flight attendant. We were very impressed. And the pilots all came out to say goodbye and thank you. All very nice...esp for me who needed some wheelchair assistance. We will certainly fly with you again in the future.

Smaller plane but ok for short flight

DTW
YOW
Excellent 9.3

Please see above. Sherry was amazing

Plane was small and older but it was a short flight

DTW
MEX
Excellent 8.3

Even though I was disappointed by not being able to get the boarding passes from Delta for Aeromexico’s connecting flight to Bogota, I had an agent greet me after customs in Mexico to issue the boarding pass so I could use the transfer flight line. Excellent service throughout the entire trip.

Confusion over my boarding pass at the Delta terminal in Detroit.

ATL
JNB
Okay 4.0

Aircraft seemed shabby despite refresh of Comfort Plus, food was really mediocre. Steer clear of the Asian Veg option.

Thu, May 10
STL
SFO
16h 26m
Sat, May 12
SFO
STL
12h 07m
Trip: 3 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33843 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
BUF
MCO
Mediocre 3.3

The service was Ok, but our flight was 4 hours delayed and it wasn't mechanical or weather related delay, the airline made a scheduling error, we almost missed our car rental and we didn't get to our destination til really late at night when it should been there in the daytime. Overall, won't fly with them again

MKE
TPA
Mediocre 2.0

the flights and attendents were good ,flight was delayed almost 2 hours on my return flight

didnt have to pay for luggage on first flight put under seat on return flight the girl at ticket counter was rude to me and charged me 45.00 for my bag i put under my seat and she was not a pleasant person to deal with, i wouldnt fly frontier again

ISP
MIA
Excellent 10.0

Great flight from Islip to MIA. Looked at another review about water on flights and I was told by the crew that water is FREE!

Seats are small but newly redesigned.

TPA
LAS
Okay 4.3

Very reasonable price.

You literally have to pay for even the basic things, including for seats to recline. Cushion on seats thin and seats don't recline. 5hrs flight and No entertainment, no tv, no radio, no complimentary food...they offered a cup of water.

DEN
ORD
Excellent 9.6

They left me alone.

Fold down tables are tiny

Wed, Jul 11
STL
SFO
9h 04m
Tue, Jul 17
SFO
STL
12h 01m
Trip: 7 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33843 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MKE
TPA
Mediocre 2.0

the flights and attendents were good ,flight was delayed almost 2 hours on my return flight

didnt have to pay for luggage on first flight put under seat on return flight the girl at ticket counter was rude to me and charged me 45.00 for my bag i put under my seat and she was not a pleasant person to deal with, i wouldnt fly frontier again

DEN
ORD
Excellent 9.6

They left me alone.

Fold down tables are tiny

MCO
CLT
Mediocre 3.3

The flight was ok

First of all the check in lady was rude and unprofessional. The company lost y luggage resulting in extra charges When I was looking for assistance mr Prince was extremely rude, rolling the eyes and not providing support, I was lost and seeking for guidance and I had to figure it out by myself

ISP
MIA
Excellent 10.0

Great flight from Islip to MIA. Looked at another review about water on flights and I was told by the crew that water is FREE!

Seats are small but newly redesigned.

DEN
SFO
Mediocre 2.0

The crew was rude to the passengers. They charge form 9$ to 40$ for seat selection. Charge for a Carry on bag (anything that doesn't fit under your seat). The flights had maintenance issue, hence delayed. I will absolutely avoid traveling with frontier in the future.

Wed, Aug 1
STL
SFO
16h 20m
Wed, Aug 8
SFO
STL
19h 23m
Trip: 8 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33843 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
MCO
CLT
Mediocre 3.3

The flight was ok

First of all the check in lady was rude and unprofessional. The company lost y luggage resulting in extra charges When I was looking for assistance mr Prince was extremely rude, rolling the eyes and not providing support, I was lost and seeking for guidance and I had to figure it out by myself

ORD
RSW
Good 6.0

Crew was super nice

Delayed 3 hours, boarded and was told would be another 30minutes because of mechanical issues.

MKE
TPA
Mediocre 2.0

the flights and attendents were good ,flight was delayed almost 2 hours on my return flight

didnt have to pay for luggage on first flight put under seat on return flight the girl at ticket counter was rude to me and charged me 45.00 for my bag i put under my seat and she was not a pleasant person to deal with, i wouldnt fly frontier again

DEN
SFO
Mediocre 2.0

The crew was rude to the passengers. They charge form 9$ to 40$ for seat selection. Charge for a Carry on bag (anything that doesn't fit under your seat). The flights had maintenance issue, hence delayed. I will absolutely avoid traveling with frontier in the future.

BUF
MCO
Mediocre 3.3

The service was Ok, but our flight was 4 hours delayed and it wasn't mechanical or weather related delay, the airline made a scheduling error, we almost missed our car rental and we didn't get to our destination til really late at night when it should been there in the daytime. Overall, won't fly with them again

Fri, Mar 23
STL
SFO
21h 46m
Wed, Mar 28
SFO
STL
8h 18m
Trip: 6 days
5.7OkayShow reviews
Overall 5.7 Okay
Based on 33843 reviews
Overall
5.9
Boarding
6.4
Comfort
5.4
Crew
6.8
Entertainment
4.5
Food
4.7
IAD
SAT
Mediocre 3.6

The crew was helpful and apologetic.

They purposefully understaffed the check in counter, which you have to use. They charge for every little thing, even carry on bags and snacks. The seats might as well be lawn chairs. They are so close together everyone onboard will die from head injuries if there's an accident. I'll fly Southwest from now on.

DCA
DEN
Excellent 8.0

Friendly staff

Didn't like I wasn't offered a cup of water and they nickel and dime you for EVERYTHING!

BUF
MCO
Good 7.3

Flight was great. Checkin etc was great

MCO
CLT
Mediocre 3.3

The flight was ok

First of all the check in lady was rude and unprofessional. The company lost y luggage resulting in extra charges When I was looking for assistance mr Prince was extremely rude, rolling the eyes and not providing support, I was lost and seeking for guidance and I had to figure it out by myself

ORD
RSW
Good 6.0

Crew was super nice

Delayed 3 hours, boarded and was told would be another 30minutes because of mechanical issues.

Show more results

Lambert-St Louis to San Francisco Flight Information

Avg. Flight Duration 4h 15m
Flights Arrive in San Francisco
Flights Depart from Lambert-St Louis
Flight Price $178
Distance 1732 miles
Airlines Frontier, United, Delta
*
Prices are per person and are for e–tickets and include all taxes & fees in USD.

We attempt to get accurate prices, however, prices are not guaranteed.

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Our service lets you quickly and easily compare results from hundreds of travel sites at once. In this sense, KAYAK is a search engine and we can't guarantee prices we find.

Why aren’t prices accurate 100% of the time?
Prices on airline seats, hotel rooms and car rentals can change frequently. Several people may also be trying to buy the same travel option simultaneously. As a result, you may find, on occasion, that certain prices are no longer available.

If you have more questions or if you have a bad price to report to us,
please send us an and someone from our team will get back to you promptly.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.