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Cheap flights from the United States to San Diego from $39

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from the United States to San Diego departing on 1/27. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
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0 bags

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Find the cheapest flights from the United States to San Diego

Recent round-trip flight deals from the United States to San Diego

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Multiple Airlines Logo
7:00 am - 8:35 am
SFO
-
SAN
1h 35mnonstop
Multiple Airlines Logo
8:32 pm - 10:25 pm
SAN
-
SFO
1h 53mnonstop
$82Multiple Airlines
Fri, Jan 9 - Mon, Jan 12
United Airlines Logo
9:30 pm - 11:05 pm
SFO
-
SAN
1h 35mnonstop
United Airlines Logo
7:45 am - 9:34 am
SAN
-
SFO
1h 49mnonstop
$83United Airlines
Fri, Jan 9 - Mon, Jan 12
Alaska Airlines Logo
7:00 am - 8:35 am
SFO
-
SAN
1h 35mnonstop
Alaska Airlines Logo
8:59 pm - 10:47 pm
SAN
-
SFO
1h 48mnonstop
$84Alaska Airlines
Fri, Jan 9 - Mon, Jan 12
Alaska Airlines Logo
8:20 am - 10:04 am
SFO
-
SAN
1h 44mnonstop
Alaska Airlines Logo
8:59 pm - 10:47 pm
SAN
-
SFO
1h 48mnonstop
$87Alaska Airlines
Tue, Jan 6 - Wed, Jan 7
Delta Logo
1:55 pm - 4:39 pm
SEA
-
SAN
2h 44mnonstop
Delta Logo
7:00 am - 10:15 am
SAN
-
SEA
3h 15mnonstop
$119Delta
Mon, Jan 5 - Mon, Jan 12
Southwest Logo
6:05 am - 4:45 pm
SEA
-
SAN
10h 40m2 stops
Southwest Logo
10:40 am - 4:50 pm
SAN
-
SEA
6h 10m1 stop
$122Southwest
Wed, Jan 7 - Sat, Jan 17
Southwest Logo
12:45 pm - 8:20 pm
SEA
-
SAN
7h 35m1 stop
Southwest Logo
2:15 pm - 10:35 pm
SAN
-
SEA
8h 20m2 stops
$124Southwest
Wed, Feb 25 - Wed, Mar 4
American Airlines Logo
11:05 am - 12:29 pm
DFW
-
SAN
3h 24mnonstop
American Airlines Logo
6:20 am - 11:23 am
SAN
-
DFW
3h 03mnonstop
$148American Airlines
Wed, Feb 4 - Mon, Feb 9
American Airlines Logo
7:50 pm - 10:26 pm
ORD
-
SAN
4h 36mnonstop
American Airlines Logo
12:46 pm - 12:23 am
SAN
-
ORD
9h 37m1 stop
$161American Airlines
Tue, Jan 13 - Wed, Jan 21
Delta Logo
7:05 am - 4:40 pm
IAD
-
SAN
12h 35m2 stops
Delta Logo
7:00 am - 11:06 pm
SAN
-
IAD
13h 06m2 stops
$258Delta
Sat, Jan 10 - Tue, Jan 13

Southwest flights from United States to San Diego

Our best Southwest deals on United States to San Diego flight tickets
Southwest
Jan 10
SFO6:20 amSan Francisco
1h 30m
SAN7:50 amSan Diego
Jan 13
SAN8:50 amSan Diego
1h 45m
SFO10:35 amSan Francisco
$92
Find similar
Southwest
Jan 9
SFO3:00 pmSan Francisco
4h 10m
1 stop
SAN7:10 pmSan Diego
Jan 11
SAN6:45 amSan Diego
1h 45m
SFO8:30 amSan Francisco
$107
Find similar
Southwest
Dec 31
SFO3:05 pmSan Francisco
1h 30m
SAN4:35 pmSan Diego
Jan 7
SAN3:15 pmSan Diego
1h 40m
SFO4:55 pmSan Francisco
$116
Find similar

Frontier flights from United States to San Diego

Our best Frontier deals on United States to San Diego flight tickets
Frontier
Dec 14
SFO2:13 pmSan Francisco
1h 39m
SAN3:52 pmSan Diego
Jan 9
SAN8:32 pmSan Diego
1h 53m
SFO10:25 pmSan Francisco
$87
Find similar
Frontier
Dec 15
SFO8:48 pmSan Francisco
21h 05m
1 stop
SAN5:53 pmSan Diego
Jan 9
SAN8:32 pmSan Diego
1h 53m
SFO10:25 pmSan Francisco
$94
Find similar
Frontier
Jan 10
SFO2:36 pmSan Francisco
7h 22m
1 stop
SAN9:58 pmSan Diego
Jan 12
SAN8:32 pmSan Diego
1h 53m
SFO10:25 pmSan Francisco
$95
Find similar

momondo Fare Finder

 
Customize your flight search to find flights from United States 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, momondo users made 832,500 searches. Data last updated December 4, 2025.
Use the filters below to find and compare flights from the United States to San Diego that are best for you.

Fly from

Fly to

Route

Depart

Return

Price

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 1/9

7:00 am-8:35 am

Nonstop1h 35m

San Diego

Mon 1/12

8:32 pm-10:25 pm

Nonstop1h 53m

$82

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 1/9

9:30 pm-11:05 pm

Nonstop1h 35m

San Diego

Mon 1/12

7:45 am-9:34 am

Nonstop1h 49m

$83

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 1/9

7:00 am-8:35 am

Nonstop1h 35m

San Diego

Mon 1/12

8:59 pm-10:47 pm

Nonstop1h 48m

$84

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Tue 1/6

8:20 am-10:04 am

Nonstop1h 44m

San Diego

Wed 1/7

8:59 pm-10:47 pm

Nonstop1h 48m

$87

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 1/5

1:55 pm-4:39 pm

Nonstop2h 44m

San Diego

Mon 1/12

7:00 am-10:15 am

Nonstop3h 15m

$119

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 1/7

6:05 am-4:45 pm

2 stops10h 40m

San Diego

Sat 1/17

10:40 am-4:50 pm

1 stop6h 10m

$122

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Wed 2/25

12:45 pm-8:20 pm

1 stop7h 35m

San Diego

Wed 3/4

2:15 pm-10:35 pm

2 stops8h 20m

$124

DallasSan Diego

DFW - SAN

DFWSAN

Dallas/Fort Worth

Wed 2/4

11:05 am-12:29 pm

Nonstop3h 24m

San Diego

Mon 2/9

6:20 am-11:23 am

Nonstop3h 03m

$148

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Tue 1/13

7:50 pm-10:26 pm

Nonstop4h 36m

San Diego

Wed 1/21

12:46 pm-12:23 am

1 stop9h 37m

$161

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 1/10

7:05 am-4:40 pm

2 stops12h 35m

San Diego

Tue 1/13

7:00 am-11:06 pm

2 stops13h 06m

$258

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
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See travel insights to San Diego from

How to get the cheapest flight ticket from United States to San Diego

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

What is the cheapest month to fly to San Diego?

If you are unable to visit San Diego during the month of September, then departing from United States during the month January is also very affordable. Most momondo users find prices during this month for around $336.

What is the cheapest day to depart on your flight to San Diego?

The cheapest day to depart from United States to San Diego is on a Wednesday. Travelers who choose to depart for San Diego on a Wednesday will often find tickets for as low as $372. If your travel schedule is flexible, try to avoid departing on a Sunday because tickets tend to average around $473. These prices are subject to change though, so be sure to set up a Price Alert for flights to San Diego.

What is the cheapest time of day to depart on your flight to San Diego?

The cheapest time of day to fly to San Diego is at noon when flights can be purchased for as low as $337. Flights in the morning are often more expensive with an average ticket price of $410.

What is the cheapest United States to San Diego flight route?

Fly from Las Vegas Harry Reid Intl to San Diego for the best United States - San Diego flight prices

How far in advance should I book a flight to San Diego?

You are more likely to see cheaper flights to San Diego from United States when booking weeks ahead of your departure date. In general, you can expect to find flights to San Diego for around $370 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to San Diego from United States for as low as $316 on momondo.

What cabin class options are available on United States to San Diego flights?

There are 4 cabin classes available to choose from on United States to San Diego flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

Can stopping save me money on United States to San Diego flights?

No. A direct flight is the cheapest option for a flight between United States to San Diego.

Cheap United States to San Diego flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from United States to San Diego

Best Price Found

$68

Fastest flight time

0h 53m

Direct flights

Every day

Airports in San Diego

1 airport
The best one-way flight to San Diego from United States in the past 72 hours is $68. The best round-trip flight deal from United States to San Diego found on momondo in the last 72 hours is $97.
The fastest flight from United States to San Diego takes 0h 53m
Direct flights go from United States to San Diego every day.
There is 1 airport near San Diego: San Diego (SAN)
Search flight deals

  • When did momondo last update prices for flights from United States to San Diego Airport?

    Prices for flights from United States to San Diego Airport are refreshed on a daily basis.

  • How many operators does momondo search for flights from United States to San Diego Airport?

  • How old do you have to be to fly from United States to San Diego Airport?

    The minimum age for a child to fly alone is five, but airlines offering an unaccompanied minor (UNMR) service may have their age restrictions, such as regulations concerning flight duration, timing, and layovers. It is recommended that you verify with the airline you are booking with for travel from United States to San Diego Airport.

  • What documentation or ID do you need to fly to San Diego Airport?

    The travel and health documents you'll need for your trip to San Diego Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at San Diego Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.

  • What is the most popular plane model from United States to San Diego?

Best airlines flying from United States to San Diego

Compare and see reviews for airlines that fly from United States to San Diego with momondo
Airline
Rating
Free Cancellation
Price
Spirit AirlinesPriceFrom $29Free CancellationRating
6.3
8,161 reviews
Search Spirit Airlines flights
FrontierPriceFrom $37Free CancellationRating
5.8
3,092 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $38Free CancellationRating
7.8
2,815 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $57Free CancellationRating
7.4
9,063 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $58Free CancellationRating
8.0
11,396 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $77Free CancellationRating
8.0
4,254 reviews
Search Southwest flights
DeltaPriceFrom $77Free CancellationRating
7.9
8,011 reviews
Search Delta flights
JetBluePriceFrom $106Free CancellationRating
7.2
2,900 reviews
Search JetBlue flights
American AirlinesPriceFrom $179Free CancellationRating
7.2
11,045 reviews
Search American Airlines flights

Traveling to a place near San Diego?

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

Why use momondo?

Why should I use momondo to find a flight deal from United States to San Diego?

momondo collates all your flight options in one place and lets you filter them to find the perfect flight from United States to San Diego. momondo saves you time and could save you money on your trip.

Can I find flights from United States to San Diego with flexible booking policies on momondo?

Flights from United States to San Diego with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from United States to San Diego?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from United States to San Diego.

I’m not ready to book a flight from United States to San Diego right now. Can momondo alert me if prices change?

Yes. momondo can track prices for United States to San Diego flights and alert you when they change. Perform a search to set up the price alert. All that is required is a valid email address.

An easier way to manage your San Diego trip

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