ALO - SFO

$419 Find Cheap Flights from Waterloo to San Francisco

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from Waterloo to San Francisco departing on 2/11. 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, 0 bags

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 Waterloo to San Francisco, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Waterloo to San Francisco, as well as popular online travel agencies
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Everything you should know

Cheapest round-trip
$419
American Airlines
Wed 2/11Sun 2/15
ALO - SFO • 1 stop
Cheapest one-way
Multiple Airlines
Thu 1/29
ALO - SFO • multi-stop
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We hope you love your trip to San Francisco!
Flight Deals
Booking Insights
Flight Deals

Cheap Flights from Waterloo to San Francisco (ALO-SFO)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Waterloo 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 Waterloo to San Francisco

Wed, Feb 11 - Sun, Feb 15
American Airlines Logo
6:00 am - 11:36 am
ALO
-
SFO
7h 36m
1 stop
American Airlines Logo
6:00 am - 2:45 pm
SFO
-
ALO
6h 45m
1 stop
$419American Airlines
Wed, Feb 11 - Sun, Feb 15
American Airlines Logo
6:00 am - 4:01 pm
ALO
-
SFO
12h 01m
2 stops
American Airlines Logo
6:00 am - 2:45 pm
SFO
-
ALO
6h 45m
1 stop
$424American Airlines
Wed, Feb 11 - Sat, Feb 14
American Airlines Logo
6:00 am - 5:24 pm
ALO
-
SFO
13h 24m
2 stops
American Airlines Logo
12:25 am - 2:45 pm
SFO
-
ALO
12h 20m
2 stops
$429American Airlines
Sun, Mar 15 - Mon, Mar 23
American Airlines Logo
3:10 pm - 10:32 pm
ALO
-
SFO
9h 22m
1 stop
American Airlines Logo
6:00 am - 2:40 pm
SFO
-
ALO
6h 40m
1 stop
$639American Airlines
Fri, Mar 13 - Mon, Mar 23
American Airlines Logo
3:10 pm - 10:32 pm
ALO
-
SFO
9h 22m
1 stop
American Airlines Logo
6:00 am - 2:40 pm
SFO
-
ALO
6h 40m
1 stop
$657American Airlines
Fri, Mar 13 - Mon, Mar 23
American Airlines Logo
5:20 am - 5:48 pm
ALO
-
SFO
14h 28m
2 stops
American Airlines Logo
6:00 am - 2:40 pm
SFO
-
ALO
6h 40m
1 stop
$662American Airlines
Thu, Feb 12 - Sun, Feb 15
American Airlines Logo
3:15 pm - 12:48 am
ALO
-
SFO
11h 33m
2 stops
American Airlines Logo
12:30 am - 2:45 pm
SFO
-
ALO
12h 15m
2 stops
$718American Airlines
Sun, Mar 15 - Mon, Mar 23
American Airlines Logo
3:10 pm - 10:32 pm
ALO
-
SFO
9h 22m
1 stop
American Airlines Logo
12:46 pm - 11:53 pm
SFO
-
ALO
9h 07m
2 stops
$729American Airlines
Sun, Mar 15 - Mon, Mar 23
American Airlines Logo
3:10 pm - 10:32 pm
ALO
-
SFO
9h 22m
1 stop
American Airlines Logo
12:46 pm - 11:53 pm
SFO
-
ALO
9h 07m
2 stops
$747American Airlines
Sat, Mar 14 - Mon, Mar 23
American Airlines Logo
5:20 am - 7:03 pm
ALO
-
SFO
15h 43m
2 stops
American Airlines Logo
6:00 am - 2:40 pm
SFO
-
ALO
6h 40m
1 stop
$751American Airlines
Booking Insights

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

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

What is the most popular layover airport when flying from Waterloo to San Francisco?

Percentage of 1-stop round-trip flights from Waterloo to San Francisco chosen by KAYAK users via each layover airport in the last 12 months (only includes trips with the same layover airport on both legs).

Chicago (ORD) is the top choice – 92% of KAYAK users who clicked on 1-stop flights from Waterloo to San Francisco picked an itinerary connecting there.

What is the cheapest layover airport when flying from Waterloo to San Francisco?

Average round-trip price for 1-stop flights from Waterloo to San Francisco clicked by KAYAK users in the last 12 months (only includes trips with the same layover airport on both legs).

Flights via Denver (DEN) offer the most affordable fares, with an average round-trip price of $378.

Which layover airport offers the shortest total travel time from Waterloo to San Francisco?

Shortest average total travel time for 1-stop one-way flights from Waterloo to San Francisco via different layover airports, based on KAYAK user data from the last 12 months.

Consider flying via Denver (DEN) for the shortest journey. The average one-way travel time for flights connecting there is 6h 31m.

Which layover airport has the quickest connection when flying from Waterloo to San Francisco?

Average layover duration at different layover airports for 1-stop one-way flights from Waterloo to San Francisco, based on KAYAK user data from the last 12 months.

If you prefer a quick connection, Denver (DEN) often has the shortest layovers from Waterloo to San Francisco, with an average of 0h 59m.

Good to know

Cheapest flight$419
Flight from Waterloo to San Francisco

When to book flights from Waterloo to San Francisco

Are your dates flexible? Find out the best times to travel from Waterloo 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 Waterloo to San Francisco

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

    In the last 3 days, the lowest price for a flight from Waterloo to San Francisco was $489 for a one-way ticket and $419 for a round-trip.

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

    No, a passport isn't needed to fly from Waterloo to San Francisco. However, local authorities might ask for an official ID.

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

    Waterloo and San Francisco are both served by 1 main airport. You will leave Waterloo from Waterloo and will be arriving at San Francisco.

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

    We unfortunately don’t have that data for this specific route.

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

    oneworld is the only airline alliance operating flights between Waterloo and San Francisco.

  • How does KAYAK find such low prices on flights from Waterloo 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 Waterloo to San Francisco.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to San Francisco from Waterloo 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 Waterloo 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 Waterloo with another airline. Booking your flights between Waterloo 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 Waterloo 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 Waterloo up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Reviews of the top airline flying from Waterloo to San Francisco

 
See real verified KAYAK customer reviews for airlines flying from Waterloo 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 Waterloo 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.
7.2
American AirlinesOverall score based on 11205 reviews
7.5Boarding
6.4Food
7.2Comfort
8.0Crew
6.9Entertainment
Airline reviews

Amazing I love American. I’ll never fly anyone else if I can help it.

10.0 ExcellentRichard, Jan 2026
PHX - ONT
Read more American Airlines reviews

Amazing I love American. I’ll never fly anyone else if I can help it.

Everything about the flight was lovely. My only suggestion would be to offer a few more options of tv series from Apple TV or HBO.

After the door had been closed, the cockpit makes an announcement that catering is running late and it is not the airline's fault. It is their fault in the sense that we had to sit for 2 hours or more when we could have stayed in the terminal. Poor communications between catering and airline. This caused a young man to lose his temper and he went storming out hitting objects. He had complained to the gate agent that he had already waited at the gate 7 hours and when can the airplane leave? Airilnes do a poor job of explaining delays, maintenance issues, etc. whereas being truthful may gain more sympathy or understanding.

The boarding process needs to be fixed. The zone don't work, especially when there is hardly anyone in zones 3, 4,and 5, leaving the majority of the passengers backed up in the aisle, especially because passengers seated near the front are blocking passengers who are seated in the rear of the plane. It would also help if the size of carry on bags was more strictly enforced.

We were told the flight was delayed 5 times, then it was moved to the next day.

The experience with American Airlines was good, although the Philippines Airlines flight was much better (better seats, better food, better entertainment options, overall better). Again, the MIA to LAX flight was fine, but nothing in comparison to the comfort and accommodations of the Philippines Airlines flight from LAX to MNL.

Loved the crew . Absolutely no complaints. Except for luggage lost

Wish some foods provided rather than just biscuit/cookie for flight more than 2 hours

We are too tired and frustrated to comment politely at this point

The flight crew was rude. We were in first class and no one even offered water until an hour after we were in the air. Horrible experience

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

Information on your arrival and departure airports