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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 11/9. 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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Find the cheapest flights from the United States to San Diego

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

Enter your travel dates to find the best prices.
Alaska Airlines Logo
7:00 am - 8:40 amSFO-SAN
1h 40mnonstop
Alaska Airlines Logo
8:02 pm - 9:55 pmSAN-SFO
1h 53mnonstop
$77Alaska Airlines
Find Deal
Thu, Nov 6 - Sat, Nov 8
Multiple Airlines Logo
9:03 am - 10:48 amSFO-SAN
1h 45mnonstop
Multiple Airlines Logo
6:15 am - 8:06 amSAN-SFO
1h 51mnonstop
$78Multiple Airlines
Find Deal
Wed, Nov 26 - Wed, Dec 3
Frontier Logo
6:00 am - 10:49 amDEN-SAN
5h 49m1 stop
Frontier Logo
6:58 am - 10:35 amSAN-DEN
2h 37mnonstop
$80Frontier
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Mon, Nov 10 - Tue, Nov 11
Frontier Logo
10:29 pm - 11:50 pmDEN-SAN
2h 21mnonstop
Frontier Logo
5:47 pm - 9:18 pmSAN-DEN
2h 31mnonstop
$81Frontier
Find Deal
Thu, Nov 13 - Mon, Nov 17
Southwest Logo
10:35 am - 5:05 pmSFO-SAN
6h 30m1 stop
Southwest Logo
7:00 am - 8:45 amSAN-SFO
1h 45mnonstop
$99Southwest
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Wed, Nov 12 - Sun, Nov 16
Southwest Logo
3:15 pm - 9:10 pmSFO-SAN
5h 55m2 stops
Southwest Logo
3:35 pm - 8:10 pmSAN-SFO
4h 35m1 stop
$126Southwest
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Wed, Nov 12 - Thu, Nov 13
Delta Logo
7:55 pm - 10:47 pmSEA-SAN
2h 52mnonstop
Delta Logo
6:15 am - 9:35 amSAN-SEA
3h 20mnonstop
$178Delta
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Sat, Nov 22 - Fri, Nov 28
American Airlines Logo
10:45 am - 12:06 pmDFW-SAN
3h 21mnonstop
American Airlines Logo
9:21 am - 2:20 pmSAN-DFW
2h 59mnonstop
$179American Airlines
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Sat, Jan 17 - Tue, Jan 20
Delta Logo
9:50 am - 12:46 pmSEA-SAN
2h 56mnonstop
Delta Logo
3:15 pm - 6:28 pmSAN-SEA
3h 13mnonstop
$179Delta
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Fri, Nov 21 - Mon, Nov 24
American Airlines Logo
7:00 am - 9:23 amORD-SAN
4h 23mnonstop
American Airlines Logo
6:19 am - 12:35 pmSAN-ORD
4h 16mnonstop
$198American Airlines
Find Deal
Wed, Oct 29 - Wed, Nov 5

Alaska Airlines flights from United States to San Diego

Our best Alaska Airlines deals on United States to San Diego flight tickets
Alaska Airlines
Nov 6
SFO7:00 amSan Francisco
1h 40m
SAN8:40 amSan Diego
Nov 8
SAN8:02 pmSan Diego
1h 53m
SFO9:55 pmSan Francisco
$77
Find similar
Alaska Airlines
Oct 29
SFO10:35 amSan Francisco
1h 40m
SAN12:15 pmSan Diego
Nov 4
SAN8:08 pmSan Diego
1h 53m
SFO10:01 pmSan Francisco
$97
Find similar
Alaska Airlines
Nov 19
SFO7:00 amSan Francisco
1h 40m
SAN8:40 amSan Diego
Dec 3
SAN8:05 amSan Diego
5h 31m
1 stop
SFO1:36 pmSan Francisco
$107
Find similar

Frontier flights from United States to San Diego

Our best Frontier deals on United States to San Diego flight tickets
Frontier
Nov 10
DEN6:00 amDenver Intl
5h 49m
1 stop
SAN10:49 amSan Diego
Nov 11
SAN6:58 amSan Diego
2h 37m
DEN10:35 amDenver Intl
$80
Find similar
Frontier
Nov 13
DEN10:29 pmDenver Intl
2h 21m
SAN11:50 pmSan Diego
Nov 17
SAN5:47 pmSan Diego
2h 31m
DEN9:18 pmDenver Intl
$81
Find similar
Frontier
Dec 4
DEN6:30 amDenver Intl
2h 35m
SAN8:05 amSan Diego
Dec 7
SAN2:28 pmSan Diego
2h 34m
DEN6:02 pmDenver Intl
$82
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 October 14, 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

Thu 11/6

7:00 am-8:40 am

Nonstop1h 40m

San Diego

Sat 11/8

8:02 pm-9:55 pm

Nonstop1h 53m

$77

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 11/26

9:03 am-10:48 am

Nonstop1h 45m

San Diego

Wed 12/3

6:15 am-8:06 am

Nonstop1h 51m

$78

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Mon 11/10

6:00 am-10:49 am

1 stop5h 49m

San Diego

Tue 11/11

6:58 am-10:35 am

Nonstop2h 37m

$80

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Thu 11/13

10:29 pm-11:50 pm

Nonstop2h 21m

San Diego

Mon 11/17

5:47 pm-9:18 pm

Nonstop2h 31m

$81

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 11/12

10:35 am-5:05 pm

1 stop6h 30m

San Diego

Sun 11/16

7:00 am-8:45 am

Nonstop1h 45m

$99

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 11/12

3:15 pm-9:10 pm

2 stops5h 55m

San Diego

Thu 11/13

3:35 pm-8:10 pm

1 stop4h 35m

$126

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 11/22

7:55 pm-10:47 pm

Nonstop2h 52m

San Diego

Fri 11/28

6:15 am-9:35 am

Nonstop3h 20m

$178

DallasSan Diego

DFW - SAN

DFWSAN

Dallas/Fort Worth

Sat 1/17

10:45 am-12:06 pm

Nonstop3h 21m

San Diego

Tue 1/20

9:21 am-2:20 pm

Nonstop2h 59m

$179

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 11/21

9:50 am-12:46 pm

Nonstop2h 56m

San Diego

Mon 11/24

3:15 pm-6:28 pm

Nonstop3h 13m

$179

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 10/29

7:00 am-9:23 am

Nonstop4h 23m

San Diego

Wed 11/5

6:19 am-12:35 pm

Nonstop4h 16m

$198

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 Tuesday. Travelers who choose to depart for San Diego on a Tuesday 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 $470. 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 in the evening when flights can be purchased for as low as $391. Flights at noon are often more expensive with an average ticket price of $437.

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 $372 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 $306 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

$49

Fastest flight time

1h 30m

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 $49. The best round-trip flight deal from United States to San Diego found on momondo in the last 72 hours is $76.
The fastest flight from United States to San Diego takes 1h 30m
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 $28Free CancellationRating
6.3
8,094 reviews
Search Spirit Airlines flights
FrontierPriceFrom $37Free CancellationRating
5.8
3,136 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $38Free CancellationRating
7.8
2,779 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $57Free CancellationRating
7.4
8,975 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $58Free CancellationRating
8.0
11,073 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $77Free CancellationRating
8.0
4,235 reviews
Search Southwest flights
DeltaPriceFrom $77Free CancellationRating
7.9
7,972 reviews
Search Delta flights
Sun Country AirPriceFrom $142Free CancellationRating
6.9
334 reviews
Search Sun Country Air flights
JetBluePriceFrom $166Free CancellationRating
7.2
2,905 reviews
Search JetBlue flights
American AirlinesPriceFrom $185Free CancellationRating
7.2
11,043 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
La Mesa
Imperial Beach
Poway
San Ysidro
Borrego Springs
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.

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