SFO - ALO

$349 Find Cheap Flights from San Francisco to Waterloo

This is the cheapest round-trip flight price found by a KAYAK user in the last 72 hours by searching for a flight from San Francisco to Waterloo departing on 2/27. 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 Waterloo

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from San Francisco to Waterloo, 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 San Francisco to Waterloo, as well as popular online travel agencies
Travelers love KAYAK
41 299 237 searches in the past 7 days on KAYAK

Save 23% 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.

Everything you should know

Cheapest round-trip
$349
American Airlines
Fri 2/27Fri 3/6
SFO - ALO • 1 stop
Cheapest one-way
Multiple Airlines
Sat 1/31
SFO - ALO • multi-stop
Start a new search
KAYAK searches 100s of sites at once to find you the best travel deals.
We hope you love your trip to Waterloo!
Flight Deals
Booking Insights
Flight Deals

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

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

Fri, Feb 27 - Fri, Mar 6
American Airlines Logo
3:13 pm - 11:53 pm
SFO
-
ALO
6h 40m
1 stop
American Airlines Logo
3:15 pm - 10:40 pm
ALO
-
SFO
9h 25m
1 stop
$349American Airlines
Fri, Feb 27 - Fri, Mar 6
American Airlines Logo
10:25 am - 11:53 pm
SFO
-
ALO
11h 28m
2 stops
American Airlines Logo
3:15 pm - 10:40 pm
ALO
-
SFO
9h 25m
1 stop
$354American Airlines
Fri, Feb 27 - Fri, Mar 6
American Airlines Logo
11:30 am - 11:53 pm
SFO
-
ALO
10h 23m
2 stops
American Airlines Logo
3:15 pm - 12:48 am
ALO
-
SFO
11h 33m
2 stops
$479American Airlines
Booking Insights

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

Get data-powered insights and trends into flights from San Francisco to Waterloo 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 San Francisco to Waterloo?

Percentage of 1-stop round-trip flights from San Francisco to Waterloo 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 – 79% of KAYAK users who clicked on 1-stop flights from San Francisco to Waterloo picked an itinerary connecting there.

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

Average round-trip price for 1-stop flights from San Francisco to Waterloo 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 $284.

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

Shortest average total travel time for 1-stop one-way flights from San Francisco to Waterloo 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 5h 38m.

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

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

If you prefer a quick connection, Denver (DEN) often has the shortest layovers from San Francisco to Waterloo, with an average of 1h 16m.

Find deals

Good to know

Cheapest flight$349
Flight from San Francisco to Waterloo

When to book flights from San Francisco to Waterloo

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

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

    In the last 3 days, the lowest price for a flight from San Francisco to Waterloo was $349 for a round-trip ticket.

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

    No

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

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

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

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

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

    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 San Francisco to Waterloo.

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

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Waterloo from San Francisco 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 San Francisco to Waterloo?

    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 Waterloo with an airline and back to San Francisco with another airline. Booking your flights between San Francisco and ALO 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 San Francisco to Waterloo?

    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 Waterloo from San Francisco 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 San Francisco to Waterloo

 
See real verified KAYAK customer reviews for airlines flying from San Francisco to Waterloo. 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 San Francisco to Waterloo? 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 11213 reviews
6.4Food
7.5Boarding
6.9Entertainment
8.0Crew
7.2Comfort
Airline reviews

It would be nice to have some low carb options in the snacks.

10.0 ExcellentLori, Jan 2026
SMF - PHX
Read more American Airlines reviews

It would be nice to have some low carb options in the snacks.

The entertainment options were at best, fair. It was exactly the same as my outbound flight. It would have been more entertaining if there were some series from Apple TV, HBO, Showtime or other carriers for me to catch up with.

The flight was on time and arrived early. The crew were friendly and helpful.

Overall experience was great. Flights were almost on time in departing and we arrived at our destination as scheduled. No issues with amenities or flight crew. Everything went well as as expected. Will fly again with American Airlines in the future!

The boarding by groups is pointless. The first two groups worked fine, but almost Noone boarded in goups three thru five leaving the vast majority boarding when group six was called. It defeated the purpose of spreading out the crowd.

Horrible. Both legs of my flight were delayed more than 6 hours. No compensation, no screens on the plane, and the plane was not clean.

The flight was smooth, the pilot kept us informed about delays and we arrived more of less on time

The flight was flawless and we even arrived between 20 and 25 minutes early!

Always seated jammed in rear of aircraft Admirals Club food at DFW terminal D was absolute worst food experience and I pay $600/year to eat this dried out junk

Mostly good. Flight was crowded but Airline personnel were very friendly & accommodating. It would be good to have savory snacks rather than just sweet Biscoff cookies.

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

Information on your arrival and departure airports

San Francisco (SFO)
Waterloo (ALO)