ALO - SAN

$624 Find Cheap Flights from Waterloo to San Diego - Compare and Save

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 Diego departing on 8/12. 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

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Everything you should know

Cheapest round-trip
$624
American Airlines
Wed 8/12Sun 8/16
ALO - SAN • 1 stop
Nonstop flights
Not available
There are currently no direct flights between Waterloo and San Diego. You'll need at least 1 connection.
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Flight Deals

Cheap Flights from Waterloo to San Diego (ALO-SAN)

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

Wed, Aug 12 - Sun, Aug 16
American Airlines Logo
5:00 am - 7:19 pm
ALO
-
SAN
16h 19m
1 stop
American Airlines Logo
7:24 am - 12:22 am
SAN
-
ALO
14h 58m
1 stop
$624American Airlines
Wed, Aug 12 - Sun, Aug 16
American Airlines Logo
5:00 am - 7:19 pm
ALO
-
SAN
16h 19m
1 stop
American Airlines Logo
9:43 am - 12:22 am
SAN
-
ALO
12h 39m
2 stops
$634American Airlines
Wed, Aug 12 - Sun, Aug 16
American Airlines Logo
5:00 am - 6:18 pm
ALO
-
SAN
15h 18m
2 stops
American Airlines Logo
8:00 am - 12:22 am
SAN
-
ALO
14h 22m
2 stops
$639American Airlines
Booking Insights

Good to know

Cheapest flight

$624
Flight from Waterloo to San Diego

When to book flights from Waterloo to San Diego

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

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

    In the last 5 days, the lowest price for a flight from Waterloo to San Diego was $624 for a round-trip ticket.

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

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

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

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

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

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

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

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

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

    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 Diego.

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

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

    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 Diego with an airline and back to Waterloo with another airline. Booking your flights between Waterloo and SAN 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 Diego?

    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 Diego 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 Diego

 
See real verified KAYAK customer reviews for airlines flying from Waterloo to San Diego. 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 Diego? 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 11848 reviews
7.9Crew
6.8Entertainment
7.5Boarding
7.2Comfort
6.4Food
Airline reviews

The seat when "flat" was not flat and pad was too thin to cover it.

8.0 ExcellentAnonymous, May 2026
LHR - SAN
Read more American Airlines reviews

The seat when "flat" was not flat and pad was too thin to cover it.

Delayed for mechanical and no updates on what was happening and how long the delay might be.

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

My flight was delayed for several hours. Sitting at gate 16 for several hours, I got a text from Kayak the gate changed to 9 before it was announced. Very bad communication at each gate from American Airlines employees. I received 10 notifications of delay from Kayak. My vacation started off horrible! I will write to American Airlines corporate office also.

The service and food needs to improve to catch up with other international flights

The flight crew was fantastic! Which the seats had a small TV.

also wi-fi never worked attendant said satellite coverage is spotty over water ..... but we were over land!

They attended to my needs as I couldn't walk and they provided a wheelchair for me.q

This time my flight was smooth and uneventful. They started boarding even earlier than it was scheduled. I was pleasantly surprised. Thank you!

Boarding was a mess - the agent basically called every group in rapid succession, so there was no organization at all. The economy seats are a joke, and main cabin extra seats were sold out when I purchased my flight. As such, I was locked in the same position for four hours. Being 6’6”, it was impossible to get my bag out from under the seat in front of me, and I couldn’t have used my laptop even if my bag were accessible due to the minuscule seat pitch. Also the wifi was broken. American is a joke - can’t wait until they merge with Spirit.

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

Information on your arrival and departure airports

Waterloo (ALO)
San Diego (SAN)