$447+ 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 11/25. Fares are subject to change and may not be available on all flights or dates of travel.
ALO — SAN
Oct 16 — Oct 231
Round-trip
1 adult, Economy
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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
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Best
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Cheapest flights from Waterloo to San DiegoExplore 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 September 16, 2026.
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 September 16, 2026.
This American Airlines deal was found by Cheapflights users on 9/15. 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 11/253:44 pm -
1 stop19h 50m
Wed 12/910:12 am -
1 stop11h 47m
Deal found 9/15![American Airlines logo]()
$447
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/156:07 am -
1 stop19h 12m
Thu 10/2210:40 pm -
1 stop14h 29m
Deal found 9/14![American Airlines logo]()
$469
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/166:07 am -
1 stop17h 27m
Sat 10/177:53 am -
1 stop13h 58m
Deal found 9/14![American Airlines logo]()
$471
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/163:39 pm -
1 stop19h 37m
Sun 10/1810:40 pm -
1 stop14h 29m
Deal found 9/14![American Airlines logo]()
$489
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 10/35:00 am -
1 stop14h 29m
Wed 10/710:40 pm -
1 stop14h 29m
Deal found 9/14![American Airlines logo]()
$508
This American Airlines deal was found by Cheapflights users on 9/13. 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 11/195:56 am -
2 stops14h 05m
Tue 11/2410:45 pm -
1 stop14h 29m
Deal found 9/13![American Airlines logo]()
$509
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/296:07 am -
2 stops13h 46m
Thu 11/59:26 am -
2 stops12h 12m
Deal found 9/14![American Airlines logo]()
$544
Best flights from Waterloo to San DiegoDiscover carefully curated flight deals from Waterloo to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 16, 2026.
Discover carefully curated flight deals from Waterloo to San Diego that have cost, travel time, and layovers in mind to ensure you get the best travel experience. Data last updated September 16, 2026.
This American Airlines deal was found by Cheapflights users on 9/15. 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 11/253:44 pm -
1 stop19h 50m
Wed 12/910:12 am -
1 stop11h 47m
Deal found 9/15![American Airlines logo]()
$447
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/156:07 am -
1 stop19h 12m
Thu 10/2210:40 pm -
1 stop14h 29m
Deal found 9/14![American Airlines logo]()
$469
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/296:07 am -
2 stops13h 46m
Thu 11/59:26 am -
2 stops12h 12m
Deal found 9/14![American Airlines logo]()
$544
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/166:07 am -
2 stops14h 55m
Sat 10/177:15 am -
2 stops14h 36m
Deal found 9/14![American Airlines logo]()
$545
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/53:39 pm -
1 stop29h 49m
Thu 10/810:40 pm -
1 stop14h 29m
Deal found 9/14![American Airlines logo]()
$648
This American Airlines deal was found by Cheapflights users on 9/16. 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 11/63:43 pm -
1 stop19h 37m
Thu 11/196:42 am -
1 stop14h 59m
Deal found 9/16![American Airlines logo]()
$1,125
Last-minute flights from Waterloo to San DiegoDiscover last-minute flight deals from Waterloo to San Diego. Data last updated September 16, 2026 and is based on user searches.
Discover last-minute flight deals from Waterloo to San Diego. Data last updated September 16, 2026 and is based on user searches.
This American Airlines deal was found by Cheapflights users on 9/14. 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.
Sat 10/35:00 am -
1 stop14h 29m
Wed 10/710:40 pm -
1 stop14h 29m
Deal found 9/14![American Airlines logo]()
$508
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/56:07 am -
1 stop29h 09m
Fri 10/910:40 pm -
1 stop23h 11m
Deal found 9/14![American Airlines logo]()
$611
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/156:07 am -
1 stop19h 12m
Thu 10/2210:40 pm -
1 stop14h 29m
Deal found 9/14![American Airlines logo]()
$469
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/166:07 am -
1 stop17h 27m
Sat 10/177:53 am -
1 stop13h 58m
Deal found 9/14![American Airlines logo]()
$471
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/163:39 pm -
1 stop19h 37m
Sun 10/1810:40 pm -
1 stop14h 29m
Deal found 9/14![American Airlines logo]()
$489
This American Airlines deal was found by Cheapflights users on 9/14. 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 10/296:07 am -
2 stops13h 46m
Thu 11/59:26 am -
2 stops12h 12m
Deal found 9/14![American Airlines logo]()
$544
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 September 16, 2026.
Most accurate provider | Expedia 1 star |
|---|---|
Most trusted provider | Expedia 3 stars |
Round-trip from | $447 (American Airlines) |
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 7,457,451 searches. Data last updated September 16, 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
Cheapest round-trip
WaterlooSan Diego
ALO Waterloo - SAN San Diego
ALOSAN
Waterloo
Wed 11/25
3:44 pm-9:34 am
1 stop19h 50m
San Diego
Wed 12/9
10:12 am-11:59 pm
1 stop11h 47m
$447
WaterlooSan Diego
ALO Waterloo - SAN San Diego
ALOSAN
Waterloo
Thu 10/15
6:07 am-11:19 pm
1 stop19h 12m
San Diego
Thu 10/22
10:40 pm-3:09 pm
1 stop14h 29m
$469
Quickest round-trip
WaterlooSan Diego
ALO Waterloo - SAN San Diego
ALOSAN
Waterloo
Thu 10/29
6:07 am-5:53 pm
2 stops13h 46m
San Diego
Thu 11/5
9:26 am-11:38 pm
2 stops12h 12m
$544
WaterlooSan Diego
ALO Waterloo - SAN San Diego
ALOSAN
Waterloo
Fri 10/16
6:07 am-7:02 pm
2 stops14h 55m
San Diego
Sat 10/17
7:15 am-11:51 pm
2 stops14h 36m
$545
WaterlooSan Diego
ALO Waterloo - SAN San Diego
ALOSAN
Waterloo
Mon 10/5
3:39 pm-7:28 pm
1 stop29h 49m
San Diego
Thu 10/8
10:40 pm-3:09 pm
1 stop14h 29m
$648
WaterlooSan Diego
ALO Waterloo - SAN San Diego
ALOSAN
Waterloo
Fri 11/6
3:43 pm-9:20 am
1 stop19h 37m
San Diego
Thu 11/19
6:42 am-11:41 pm
1 stop14h 59m
$1,125
Sorted by cheapest first
- Most accurate provider: When it comes to deals on Waterloo, Iowa-San Diego flights, users find the pricing of Expedia to be most consistent on Cheapflights vs. Expedia Users can find the same prices on Waterloo, Iowa-San Diego flight deals on Cheapflights vs. Expedia <90% 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 Expedia the most. Expedia 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.
ALO-SAN
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 September 16, 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.
Boarding
7.4
Crew
7.9
Comfort
7.2
Food
6.4
Overall
7.1
Entertainment
6.8
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
Boarding
7.4
Crew
7.9
Comfort
7.2
Food
6.4
Overall
7.1
Entertainment
6.8
Reviews
1 / 20
2.0
MediocreAnonymous,Mar 2026
MIA - SFO
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.
Traveling to a place near San Diego?
Book flights to San Diego if you plan to visit one of these locationsEl Cajon
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Coronado
San Ysidro
Poway
La Mesa
Santee
Julian
Lemon Grove
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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 7,457,451 searches. Data last updated September 16, 2026.
| Airline | Cheapest | Average | Flexibility | On-time |
|---|---|---|---|---|
| Cheapest$288 | Average$473 | FlexibilityNo cancel fee | On-time71% |