Latest deals
Insights
FAQs
Reviews
Price Alerts

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 12/10. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
1 adult
0 bags

Discover deals from 900+ travel sites with momondo.

Save money when you book flights with momondo

Big names and deals

Big names and deals

Search 100s of travel sites to compare prices.

Filter for what you want

Filter for what you want

Free Wi-Fi? Stopover? Instantly customize your results.

Trusted and free

Trusted and free

We’re completely free to use - no hidden charges or fees.

Price Alerts

Price Alerts

Not ready to book? to track prices.
Search flight deals

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 - 8:39 amSFO-SAN
1h 39mnonstop
Alaska Airlines Logo
9:59 pm - 11:48 pmSAN-SFO
1h 49mnonstop
$79Alaska Airlines
Find Deal
Wed, Dec 3 - Thu, Dec 4
Multiple Airlines Logo
7:00 am - 8:39 amSFO-SAN
1h 39mnonstop
Multiple Airlines Logo
8:10 pm - 10:03 pmSAN-SFO
1h 53mnonstop
$82Multiple Airlines
Find Deal
Thu, Dec 11 - Thu, Dec 18
Frontier Logo
2:13 pm - 3:52 pmSFO-SAN
1h 39mnonstop
Frontier Logo
3:47 pm - 8:03 pmSAN-SFO
4h 16m1 stop
$83Frontier
Find Deal
Sun, Dec 7 - Thu, Dec 11
Frontier Logo
2:23 pm - 4:02 pmSFO-SAN
1h 39mnonstop
Frontier Logo
3:47 pm - 10:03 pmSAN-SFO
6h 16m1 stop
$84Frontier
Find Deal
Mon, Dec 8 - Thu, Dec 11
Frontier Logo
2:13 pm - 3:52 pmSFO-SAN
1h 39mnonstop
Frontier Logo
1:33 pm - 4:51 pmSAN-SFO
27h 18m1 stop
$85Frontier
Find Deal
Fri, Dec 12 - Mon, Dec 15
Southwest Logo
5:15 am - 6:35 pmSEA-SAN
13h 20m2 stops
Southwest Logo
2:15 pm - 8:20 pmSAN-SEA
6h 05m1 stop
$150Southwest
Find Deal
Thu, Jan 22 - Thu, Jan 29
Delta Logo
5:59 pm - 8:43 pmSEA-SAN
2h 44mnonstop
Delta Logo
6:50 am - 10:05 amSAN-SEA
3h 15mnonstop
$159Delta
Find Deal
Mon, Jan 12 - Thu, Jan 15
Delta Logo
5:25 pm - 8:59 pmBOS-SAN
6h 34mnonstop
Delta Logo
10:15 pm - 6:45 amSAN-BOS
5h 30mnonstop
$221Delta
Find Deal
Tue, Dec 9 - Wed, Dec 24
American Airlines Logo
1:08 pm - 8:36 pmIAD-SAN
10h 28m1 stop
American Airlines Logo
12:40 pm - 11:42 pmSAN-IAD
8h 02m1 stop
$256American Airlines
Find Deal
Sat, Jan 17 - Sat, Jan 24
Southwest Logo
4:40 pm - 9:10 pmIAD-SAN
7h 30m1 stop
Southwest Logo
10:30 am - 10:00 pmSAN-IAD
8h 30m2 stops
$262Southwest
Find Deal
Wed, Dec 3 - Tue, Dec 9

Hawaiian Airlines flights from United States to San Diego

Our best Hawaiian Airlines deals on United States to San Diego flight tickets
Hawaiian Airlines
Dec 3
SFO10:06 amSan Francisco
6h 14m
1 stop
SAN4:20 pmSan Diego
Dec 14
SAN6:15 amSan Diego
1h 51m
SFO8:06 amSan Francisco
$92
Find similar
Hawaiian Airlines
Dec 13
SEA2:08 pmSeattle/Tacoma Intl
2h 49m
SAN4:57 pmSan Diego
Dec 20
SAN4:02 pmSan Diego
6h 08m
1 stop
SEA10:10 pmSeattle/Tacoma Intl
$167
Find similar
Hawaiian Airlines
Dec 2
SEA6:26 pmSeattle/Tacoma Intl
14h 14m
1 stop
SAN8:40 amSan Diego
Dec 6
SAN4:25 pmSan Diego
3h 13m
SEA7:38 pmSeattle/Tacoma Intl
$186
Find similar

United Airlines flights from United States to San Diego

Our best United Airlines deals on United States to San Diego flight tickets
United Airlines
Dec 3
SFO6:00 amSan Francisco
4h 21m
1 stop
SAN10:21 amSan Diego
Dec 6
SAN6:15 amSan Diego
1h 47m
SFO8:02 amSan Francisco
$117
Find similar
United Airlines
Dec 10
SEA3:45 pmSeattle/Tacoma Intl
6h 45m
1 stop
SAN10:30 pmSan Diego
Dec 17
SAN1:05 pmSan Diego
5h 23m
1 stop
SEA6:28 pmSeattle/Tacoma Intl
$153
Find similar
United Airlines
Dec 5
ORD7:10 amChicago O'Hare Intl
4h 30m
SAN9:40 amSan Diego
Dec 10
SAN2:16 pmSan Diego
4h 09m
ORD8:25 pmChicago O'Hare Intl
$167
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 November 13, 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

Wed 12/3

7:00 am-8:39 am

Nonstop1h 39m

San Diego

Thu 12/4

9:59 pm-11:48 pm

Nonstop1h 49m

$79

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Thu 12/11

7:00 am-8:39 am

Nonstop1h 39m

San Diego

Thu 12/18

8:10 pm-10:03 pm

Nonstop1h 53m

$82

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Sun 12/7

2:13 pm-3:52 pm

Nonstop1h 39m

San Diego

Thu 12/11

3:47 pm-8:03 pm

1 stop4h 16m

$83

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Mon 12/8

2:23 pm-4:02 pm

Nonstop1h 39m

San Diego

Thu 12/11

3:47 pm-10:03 pm

1 stop6h 16m

$84

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 12/12

2:13 pm-3:52 pm

Nonstop1h 39m

San Diego

Mon 12/15

1:33 pm-4:51 pm

1 stop27h 18m

$85

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Thu 1/22

5:15 am-6:35 pm

2 stops13h 20m

San Diego

Thu 1/29

2:15 pm-8:20 pm

1 stop6h 05m

$150

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 1/12

5:59 pm-8:43 pm

Nonstop2h 44m

San Diego

Thu 1/15

6:50 am-10:05 am

Nonstop3h 15m

$159

BostonSan Diego

BOS - SAN

BOSSAN

Boston Logan Intl

Tue 12/9

5:25 pm-8:59 pm

Nonstop6h 34m

San Diego

Wed 12/24

10:15 pm-6:45 am

Nonstop5h 30m

$221

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Sat 1/17

1:08 pm-8:36 pm

1 stop10h 28m

San Diego

Sat 1/24

12:40 pm-11:42 pm

1 stop8h 02m

$256

Washington, D.C.San Diego

IAD - SAN

IADSAN

Washington, D.C. Dulles Intl

Wed 12/3

4:40 pm-9:10 pm

1 stop7h 30m

San Diego

Tue 12/9

10:30 am-10:00 pm

2 stops8h 30m

$262

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first
1
2

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 $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 $373 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

$59

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 $59. The best round-trip flight deal from United States to San Diego found on momondo in the last 72 hours is $78.
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 $29Free CancellationRating
6.3
8,139 reviews
Search Spirit Airlines flights
FrontierPriceFrom $36Free CancellationRating
5.8
3,111 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $38Free CancellationRating
7.8
2,809 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $57Free CancellationRating
7.4
9,017 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $58Free CancellationRating
8.0
11,284 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $77Free CancellationRating
8.0
4,240 reviews
Search Southwest flights
DeltaPriceFrom $77Free CancellationRating
7.9
8,008 reviews
Search Delta flights
JetBluePriceFrom $162Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
American AirlinesPriceFrom $183Free CancellationRating
7.2
11,051 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
La Mesa
Poway
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

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.
Start using Trips
Find my bookings

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.
1 adult
Sat 12/13
Sat 12/20
By creating a price alert you accept our terms of use and privacy policy.

Find better results for your trip to the United States