HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$582+ Cheap flights from Waterloo, IA to San Diego (ALO - SAN)

This is the cheapest round-trip flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 9/23. Fares are subject to change and may not be available on all flights or dates of travel.
ALO — SAN
Aug 20 — Aug 271
Thu 8/20
Thu 8/27
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Waterloo to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheap flight deals from Waterloo to San Diego

Cheapest flights from Waterloo to San Diego
Explore the most affordable flight options available from Waterloo to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on July 21, 2026.

This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:29 pm
ALO
-
SAN
1 stop9h 56m
American Airlines
Tue 9/291:10 pm
SAN
-
ALO
1 stop8h 49m
American Airlines
Deal found 7/20$582
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:29 pm
ALO
-
SAN
1 stop9h 56m
American Airlines
Sat 9/261:10 pm
SAN
-
ALO
1 stop8h 49m
American Airlines
Deal found 7/20$596
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 8/45:06 am
ALO
-
SAN
1 stop20h 20m
American Airlines
Sat 8/87:24 am
SAN
-
ALO
1 stop14h 58m
American Airlines
Deal found 7/20$599
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:29 pm
ALO
-
SAN
1 stop9h 56m
American Airlines
Thu 9/241:10 pm
SAN
-
ALO
1 stop8h 49m
American Airlines
Deal found 7/20$601
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:29 pm
ALO
-
SAN
1 stop19h 45m
American Airlines
Tue 9/296:15 am
SAN
-
ALO
1 stop15h 44m
American Airlines
Deal found 7/20$609
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 10/205:00 am
ALO
-
SAN
1 stop9h 34m
American Airlines
Sun 10/256:15 am
SAN
-
ALO
1 stop7h 03m
American Airlines
Deal found 7/20$611
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:29 pm
ALO
-
SAN
1 stop9h 56m
American Airlines
Sat 9/261:10 pm
SAN
-
ALO
1 stop8h 49m
American Airlines
Deal found 7/20$615
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 9/253:29 pm
ALO
-
SAN
1 stop22h 46m
American Airlines
Mon 9/286:15 am
SAN
-
ALO
1 stop15h 44m
American Airlines
Deal found 7/20$616
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 9/243:29 pm
ALO
-
SAN
1 stop9h 56m
American Airlines
Fri 9/251:10 pm
SAN
-
ALO
1 stop8h 49m
American Airlines
Deal found 7/20$620
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 9/233:29 pm
ALO
-
SAN
1 stop28h 00m
American Airlines
Mon 9/2810:46 pm
SAN
-
ALO
1 stop23h 13m
American Airlines
Deal found 7/20$623
This American Airlines deal was found by Cheapflights users on 7/20. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 10/193:48 pm
ALO
-
SAN
1 stop19h 28m
American Airlines
Sun 10/2510:53 pm
SAN
-
ALO
1 stop23h 06m
American Airlines
Deal found 7/20$629

Find flight deals from Waterloo to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Waterloo (ALO) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated July 21, 2026.

Most accurate provider

FlightHub
3 stars

Most trusted provider

FlightHub
3 stars

Round-trip from

$515
(American Airlines)
Provider with most accurate pricing for Waterloo-San Diego flight deals.
Search Deals
Provider most trusted by Cheapflights users for Waterloo-San Diego flights.
Search Deals
From Waterloo to San Diego
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Waterloo to San Diego that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 21, 2026.
Use the filters below to find and compare flights from Waterloo to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip
Quickest round-trip

WaterlooSan Diego

ALO - SAN

ALOSAN

Waterloo

Tue 10/20

5:00 am-12:34 pm

1 stop9h 34m

San Diego

Thu 10/22

1:12 pm-11:59 pm

1 stop8h 47m

$601

WaterlooSan Diego

ALO - SAN

ALOSAN

Waterloo

Wed 9/23

3:29 pm-11:25 pm

1 stop9h 56m

San Diego

Thu 9/24

1:10 pm-11:59 pm

1 stop8h 49m

$601

WaterlooSan Diego

ALO - SAN

ALOSAN

Waterloo

Thu 10/22

3:48 pm-11:41 pm

1 stop9h 53m

San Diego

Tue 10/27

1:12 pm-11:59 pm

1 stop8h 47m

$601

WaterlooSan Diego

ALO - SAN

ALOSAN

Waterloo

Tue 8/4

5:06 am-11:26 pm

1 stop20h 20m

San Diego

Sat 8/8

9:43 am-12:22 am

2 stops12h 39m

$609

WaterlooSan Diego

ALO - SAN

ALOSAN

Waterloo

Sat 1/16

3:48 pm-11:41 pm

1 stop9h 53m

San Diego

Mon 1/25

1:12 pm-11:59 pm

1 stop8h 47m

$615

WaterlooSan Diego

ALO - SAN

ALOSAN

Waterloo

Fri 1/15

3:48 pm-11:41 pm

1 stop9h 53m

San Diego

Sun 1/24

1:12 pm-11:59 pm

1 stop8h 47m

$620

WaterlooSan Diego

ALO - SAN

ALOSAN

Waterloo

Fri 1/15

3:48 pm-11:41 pm

1 stop9h 53m

San Diego

Mon 1/25

1:12 pm-11:59 pm

1 stop8h 47m

$620

WaterlooSan Diego

ALO - SAN

ALOSAN

Waterloo

Fri 9/25

5:00 am-9:48 pm

2 stops18h 48m

San Diego

Sat 9/26

10:46 pm-2:55 pm

1 stop14h 09m

$664

Flights are sorted by cheapest round-trip flights first.

Deals found on 7/20

Sorted by cheapest first

Compare providers for flights from Waterloo to San Diego

Provider information is updated monthly. Please note that these providers often have deals for this flight, but the availability may vary on a day-by-day basis on Cheapflights.
Use the table below to compare price accuracy, trust ratings, and cancellation policies for each provider offering flight deals from Waterloo to San Diego in July.
ProviderPrice AccuracyTrust Score*
ExpediaPrice Accuracy1 starTrust Score*3 stars
FlightHubPrice Accuracy3 starsTrust Score*3 stars

*The Trust Score is based on feedback from users after their booking experience. It measures overall satisfaction, helping us identify issues like hidden fees, problems during the ticketing process, and the quality of customer service. This score is our best indicator of the provider's quality and reliability.

  • Most accurate provider: When it comes to deals on Waterloo, Iowa-San Diego flights, users find the pricing of FlightHub to be most consistent on Cheapflights vs. FlightHub Users can find the same prices on Waterloo, Iowa-San Diego flight deals on Cheapflights vs. FlightHub >95% of the time. Price accuracy is based on data collected from Waterloo, Iowa-San Diego flight searches over the past month and is updated monthly.
  • Most trusted provider: When it comes to deals on Waterloo, Iowa-San Diego flights, Cheapflights users trust FlightHub the most. FlightHub has received a user feedback score of 3 out of 3 stars (3 being the best), meaning they have been trusted the most by Cheapflights users looking for Waterloo, Iowa-San Diego flight deals. Provider user feedback score is based on Cheapflights searches over the past month and is updated monthly.

Best time to book a flight from Waterloo to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Waterloo with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated July 21, 2026.
Get a feel of what it's like to fly with American Airlines from Waterloo to San Diego by reading reviews from past customers. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
American Airlines
7.1
Good
11,834 reviews

Entertainment

6.8

Boarding

7.5

Crew

7.9

Overall

7.1

Comfort

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes
American Airlines
7.1
Good
11,834 reviews
American Airlines
7.1
Good
11,834 reviews

Entertainment

6.8

Boarding

7.5

Crew

7.9

Overall

7.1

Comfort

7.2

Food

6.4

Reviews

1 / 20
2.0
Mediocre

Anonymous,Mar 2026

MIA - SFO

Horrible. When they power flights for other airlines there is nothing they can do to change or accommodate any changes

Related info for your journey

Find useful and relevant information for your journey from Waterloo to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • How long is the flight from Waterloo, Iowa to San Diego?

    American Airlines can get you from Waterloo, Iowa to San Diego in just under 9h 34m. Your travel time can differ by up to . Waterloo, Iowa and San Diego are separated by a distance of 1508 mi.

  • What is the cheapest airline to fly from Waterloo, Iowa to San Diego round-trip?

    According to our current data, American Airlines ($288), offers the cheapest pricing from Waterloo, Iowa to San Diego.

  • Can I find deals for flights from Waterloo to San Diego that include hotel bookings?

    Yes. In addition to deals on Waterloo to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Waterloo to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Waterloo to San Diego.

  • Can I find deals for business class flights from Waterloo to San Diego?

    Yes. Cheapflights offers flight deals from Waterloo to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
National City
Chula Vista
Poway
La Mesa
Coronado
Santee
San Ysidro
Julian
Lemon Grove

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Waterloo to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
Omaha to Las Vegas flights
Des Moines to Las Vegas flights
Des Moines to Los Angeles flights
Omaha to Los Angeles flights
Cedar Rapids to San Diego flights
Cedar Rapids to Las Vegas flights
Omaha to San Diego flights
Omaha to San Francisco flights
Des Moines to San Francisco flights
Moline to Las Vegas flights
Cedar Rapids to Los Angeles flights
Des Moines to San Diego flights
Cedar Rapids to San Francisco flights
Omaha to Ontario flights
Des Moines to San Jose flights
Omaha to Burbank flights
Des Moines to Ontario flights
Des Moines to Sacramento flights
Moline to Los Angeles flights
Omaha to Santa Ana flights
Moline to San Francisco flights
Des Moines to Reno flights
Cedar Rapids to Santa Ana flights
Cedar Rapids to Ontario flights
Omaha to San Jose flights
Moline to San Diego flights
Des Moines to Fresno flights
Omaha to Sacramento flights
Omaha to Santa Barbara flights
Des Moines to Palm Springs flights
Cedar Rapids to Reno flights
Des Moines to Santa Ana flights
Omaha to Reno flights
Cedar Rapids to San Jose flights
Omaha to Long Beach flights
Des Moines to Burbank flights
Des Moines to Oakland flights
La Crosse to Las Vegas flights
Des Moines to Santa Rosa flights
Omaha to Palm Springs flights
Omaha to Oakland flights
Cedar Rapids to Burbank flights
Omaha to Medford flights
Cedar Rapids to Sacramento flights
Moline to Sacramento flights
Omaha to Santa Rosa flights
La Crosse to San Diego flights

Top airline flying from Waterloo to San Diego

Discover the top airline that operate flights from Waterloo to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated July 21, 2026.
AirlineCheapestAverageFlexibilityOn-time
American AirlinesCheapest$288Average$408FlexibilityNo cancel feeOn-time71%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.