SFO - ALO

$441 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 4/7. 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
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Everything you should know

Cheapest round-trip
$441
American Airlines
Tue 4/7Tue 4/14
SFO - ALO • 1 stop
Nonstop flights
Not available
There are currently no direct flights between San Francisco and Waterloo. You'll need at least 1 connection.
Insights
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Top layover airports
Denver (DEN)
Cheapest • Avg $284 (round-trip)
Denver (DEN)
Shortest trip • 5h 38m (one-way)
Insights
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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

Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
11:52 am - 11:49 pm
SFO
-
ALO
9h 57m
1 stop
American Airlines Logo
2:23 pm - 10:00 pm
ALO
-
SFO
9h 37m
1 stop
$441American Airlines
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
1:28 pm - 11:49 pm
SFO
-
ALO
8h 21m
1 stop
American Airlines Logo
2:23 pm - 10:49 pm
ALO
-
SFO
10h 26m
2 stops
$446American Airlines
Tue, Apr 7 - Tue, Apr 14
American Airlines Logo
10:06 am - 11:49 pm
SFO
-
ALO
11h 43m
2 stops
American Airlines Logo
5:40 am - 5:39 pm
ALO
-
SFO
13h 59m
2 stops
$451American Airlines
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
6:00 am - 2:40 pm
SFO
-
ALO
6h 40m
1 stop
American Airlines Logo
5:20 am - 3:45 pm
ALO
-
SFO
12h 25m
2 stops
$893American Airlines
Thu, Mar 26 - Tue, Mar 31
American Airlines Logo
12:30 am - 2:40 pm
SFO
-
ALO
12h 10m
2 stops
American Airlines Logo
5:20 am - 5:06 pm
ALO
-
SFO
13h 46m
2 stops
$899American Airlines
Fri, Mar 27 - Tue, Mar 31
American Airlines Logo
6:00 am - 2:40 pm
SFO
-
ALO
6h 40m
1 stop
American Airlines Logo
5:20 am - 4:43 pm
ALO
-
SFO
13h 23m
1 stop
$1,088American 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 – 80% 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$441
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 $441 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.
7.1
American AirlinesOverall score based on 11435 reviews
7.2Comfort
6.9Entertainment
7.5Boarding
6.4Food
8.0Crew
Airline reviews

Dloght delayed by 2.5 hrs . Common theme in my last four american floghts

4.0 OkaySantosh, Mar 2026
SFO - DFW
Read more American Airlines reviews

Dloght delayed by 2.5 hrs . Common theme in my last four american floghts

They are rarely on time! Very hard to plan your travels when flights or connections keep getting delayed.

My seat was assigned last row behind restrooms No legroom’s I’m very Pettit Still was not comfortable Food choice was excellent

The worst Airline ever. They centered my second flight and leave me in NY. They don’t have any representatives at the airport and they don’t respond to calls. Basically I got stuck. I will never purchase through there again.

The chicken wrap was tiny ($13 for what looked like a 1/3 of a normal wrap?) and disgusting.

Mediocre would be best description. Food bland. Seat biz class uncomfortable to sleep. Crew never dimmed lights completely in an overnight flight to Europe. Would avoid AA if possible.

Small plane, poor meal choices for first class, bad terminal and boarding experience at LAX

Massimo, flight attendant was very authentic, attentive - wonderful. Food/wrap was just okay.

Experience was great. The best part is the free Wi-Fi connection which helps me to work on the flight

The flight was fine. It's the satellite terminal that supports American eagle flights is what sucks. There is only one food option and everything there is way overpriced. I mean I know it's airport pricing, but it's even crazier than that. I bought a sandwich in a plastic container for $18.

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)