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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

Logo
3:14 pm - 4:57 pmSFO-SAN
1h 43mnonstop
Logo
8:08 pm - 10:01 pmSAN-SFO
1h 53mnonstop
$76
Find Deal
Thu, Oct 30 - Tue, Nov 4
Southwest Logo
5:40 am - 7:10 amSFO-SAN
1h 30mnonstop
Southwest Logo
8:55 pm - 10:35 pmSAN-SFO
1h 40mnonstop
$77Southwest
Find Deal
Mon, Oct 13 - Mon, Oct 20
Frontier Logo
9:39 am - 11:27 amSFO-SAN
1h 48mnonstop
Frontier Logo
11:51 am - 1:52 pmSAN-SFO
2h 01mnonstop
$81Frontier
Find Deal
Thu, Oct 16 - Sun, Oct 19
Frontier Logo
9:08 am - 10:56 amSFO-SAN
1h 48mnonstop
Frontier Logo
11:51 am - 1:52 pmSAN-SFO
2h 01mnonstop
$82Frontier
Find Deal
Sun, Oct 12 - Sun, Oct 19
Alaska Airlines Logo
10:53 am - 11:58 amSLC-SAN
2h 05mnonstop
Alaska Airlines Logo
5:10 pm - 8:21 pmSAN-SLC
2h 11mnonstop
$137Alaska Airlines
Find Deal
Sat, Oct 25 - Tue, Oct 28
Alaska Airlines Logo
9:20 am - 11:45 amORD-SAN
4h 25mnonstop
Alaska Airlines Logo
1:41 pm - 7:55 pmSAN-ORD
4h 14mnonstop
$139Alaska Airlines
Find Deal
Tue, Nov 4 - Sat, Nov 8
Delta Logo
3:27 pm - 4:19 pmSLC-SAN
1h 52mnonstop
Delta Logo
6:15 am - 9:19 amSAN-SLC
2h 04mnonstop
$157Delta
Find Deal
Sat, Oct 18 - Sat, Oct 25
American Airlines Logo
8:10 pm - 9:12 pmDFW-SAN
3h 02mnonstop
American Airlines Logo
5:00 pm - 10:06 pmSAN-DFW
3h 06mnonstop
$163American Airlines
Find Deal
Tue, Oct 21 - Sat, Oct 25
American Airlines Logo
7:29 am - 8:37 amDFW-SAN
3h 08mnonstop
American Airlines Logo
5:00 pm - 10:09 pmSAN-DFW
3h 09mnonstop
$164American Airlines
Find Deal
Wed, Oct 8 - Wed, Oct 8
Delta Logo
11:25 am - 2:11 pmSEA-SAN
2h 46mnonstop
Delta Logo
7:05 pm - 10:18 pmSAN-SEA
3h 13mnonstop
$187Delta
Find Deal
Sat, Oct 25 - Mon, Oct 27

Southwest flights from United States to San Diego

Our best Southwest deals on United States to San Diego flight tickets
Southwest
Oct 13
SFO5:40 amSan Francisco
1h 30m
SAN7:10 amSan Diego
Oct 20
SAN8:55 pmSan Diego
1h 40m
SFO10:35 pmSan Francisco
$77
Find similar
Southwest
Oct 22
SFO5:30 amSan Francisco
4h 55m
1 stop
SAN10:25 amSan Diego
Oct 24
SAN7:05 amSan Diego
1h 45m
SFO8:50 amSan Francisco
$79
Find similar
Southwest
Oct 1
SFO7:25 amSan Francisco
1h 30m
SAN8:55 amSan Diego
Oct 7
SAN1:45 pmSan Diego
1h 40m
SFO3:25 pmSan Francisco
$84
Find similar

Frontier flights from United States to San Diego

Our best Frontier deals on United States to San Diego flight tickets
Frontier
Oct 16
SFO9:39 amSan Francisco
1h 48m
SAN11:27 amSan Diego
Oct 19
SAN11:51 amSan Diego
2h 01m
SFO1:52 pmSan Francisco
$81
Find similar
Frontier
Oct 12
SFO9:08 amSan Francisco
1h 48m
SAN10:56 amSan Diego
Oct 19
SAN11:51 amSan Diego
2h 01m
SFO1:52 pmSan Francisco
$82
Find similar
Frontier
Nov 14
SFO3:14 pmSan Francisco
1h 43m
SAN4:57 pmSan Diego
Nov 17
SAN12:12 pmSan Diego
1h 52m
SFO2:04 pmSan Francisco
$83
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 September 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 10/30

3:14 pm-4:57 pm

Nonstop1h 43m

San Diego

Tue 11/4

8:08 pm-10:01 pm

Nonstop1h 53m

$76

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Mon 10/13

5:40 am-7:10 am

Nonstop1h 30m

San Diego

Mon 10/20

8:55 pm-10:35 pm

Nonstop1h 40m

$77

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 10/16

9:39 am-11:27 am

Nonstop1h 48m

San Diego

Sun 10/19

11:51 am-1:52 pm

Nonstop2h 01m

$81

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sun 10/12

9:08 am-10:56 am

Nonstop1h 48m

San Diego

Sun 10/19

11:51 am-1:52 pm

Nonstop2h 01m

$82

Salt Lake CitySan Diego

SLC - SAN

SLCSAN

Salt Lake City

Sat 10/25

10:53 am-11:58 am

Nonstop2h 05m

San Diego

Tue 10/28

5:10 pm-8:21 pm

Nonstop2h 11m

$137

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Tue 11/4

9:20 am-11:45 am

Nonstop4h 25m

San Diego

Sat 11/8

1:41 pm-7:55 pm

Nonstop4h 14m

$139

Salt Lake CitySan Diego

SLC - SAN

SLCSAN

Salt Lake City

Sat 10/18

3:27 pm-4:19 pm

Nonstop1h 52m

San Diego

Sat 10/25

6:15 am-9:19 am

Nonstop2h 04m

$157

DallasSan Diego

DFW - SAN

DFWSAN

Dallas/Fort Worth

Tue 10/21

8:10 pm-9:12 pm

Nonstop3h 02m

San Diego

Sat 10/25

5:00 pm-10:06 pm

Nonstop3h 06m

$163

DallasSan Diego

DFW - SAN

DFWSAN

Dallas/Fort Worth

Wed 10/8

7:29 am-8:37 am

Nonstop3h 08m

San Diego

Wed 10/8

5:00 pm-10:09 pm

Nonstop3h 09m

$164

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Sat 10/25

11:25 am-2:11 pm

Nonstop2h 46m

San Diego

Mon 10/27

7:05 pm-10:18 pm

Nonstop3h 13m

$187

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 January, then departing from United States during the month September is also very affordable. Most momondo users find prices during this month for around $337.

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 $371. 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 in the evening when flights can be purchased for as low as $386. 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 $374 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 $307 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

$48

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 $48. The best round-trip flight deal from United States to San Diego found on momondo in the last 72 hours is $58.
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
8,016 reviews
Search Spirit Airlines flights
FrontierPriceFrom $37Free CancellationRating
5.8
3,173 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $38Free CancellationRating
7.8
2,723 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $57Free CancellationRating
7.4
8,931 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $57Free CancellationRating
8.0
10,000 reviews
Search Alaska Airlines flights
DeltaPriceFrom $68Free CancellationRating
7.9
7,956 reviews
Search Delta flights
SouthwestPriceFrom $81Free CancellationRating
8.0
4,245 reviews
Search Southwest flights
Sun Country AirPriceFrom $142Free CancellationRating
6.9
330 reviews
Search Sun Country Air flights
JetBluePriceFrom $154Free CancellationRating
7.2
2,912 reviews
Search JetBlue flights
American AirlinesPriceFrom $177Free CancellationRating
7.2
10,000 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
La Mesa
National City
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.

An easier way to manage your San Diego trip

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