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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 12/3. 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.
Frontier Logo
5:43 pm - 7:15 pmDEN-SAN
2h 32mnonstop
Frontier Logo
6:34 am - 10:12 amSAN-DEN
2h 38mnonstop
$58Frontier
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Thu, Dec 11 - Mon, Dec 15
Frontier Logo
10:20 am - 11:52 amDEN-SAN
2h 32mnonstop
Frontier Logo
8:56 am - 12:32 pmSAN-DEN
2h 36mnonstop
$63Frontier
Find Deal
Wed, Nov 12 - Tue, Nov 25
Alaska Airlines Logo
9:57 pm - 11:30 pmSFO-SAN
1h 33mnonstop
Alaska Airlines Logo
6:15 am - 8:06 amSAN-SFO
1h 51mnonstop
$77Alaska Airlines
Find Deal
Wed, Dec 3 - Tue, Dec 9
Alaska Airlines Logo
7:00 am - 8:39 amSFO-SAN
1h 39mnonstop
Alaska Airlines Logo
6:15 am - 8:06 amSAN-SFO
1h 51mnonstop
$96Alaska Airlines
Find Deal
Wed, Dec 3 - Sun, Dec 7
Southwest Logo
9:55 pm - 11:25 pmDEN-SAN
2h 30mnonstop
Southwest Logo
10:30 am - 3:55 pmSAN-DEN
4h 25m1 stop
$122Southwest
Find Deal
Mon, Dec 22 - Wed, Dec 24
Southwest Logo
7:40 am - 9:10 amSFO-SAN
1h 30mnonstop
Southwest Logo
7:00 am - 8:45 amSAN-SFO
1h 45mnonstop
$124Southwest
Find Deal
Fri, Dec 5 - Sun, Dec 7
American Airlines Logo
9:53 am - 12:30 pmORD-SAN
4h 37mnonstop
American Airlines Logo
3:03 pm - 9:29 pmSAN-ORD
4h 26mnonstop
$165American Airlines
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Wed, Dec 10 - Thu, Dec 18
American Airlines Logo
6:10 pm - 8:48 pmORD-SAN
4h 38mnonstop
American Airlines Logo
1:22 pm - 7:43 pmSAN-ORD
4h 21mnonstop
$168American Airlines
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Wed, Nov 26 - Thu, Dec 4
Delta Logo
7:10 am - 10:06 amSEA-SAN
2h 56mnonstop
Delta Logo
5:15 pm - 8:29 pmSAN-SEA
3h 14mnonstop
$178Delta
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Mon, Nov 24 - Sat, Dec 6
Delta Logo
7:10 am - 10:08 amSEA-SAN
2h 58mnonstop
Delta Logo
6:30 am - 9:53 amSAN-SEA
3h 23mnonstop
$187Delta
Find Deal
Fri, Dec 19 - Wed, Dec 24

American Airlines flights from United States to San Diego

Our best American Airlines deals on United States to San Diego flight tickets
American Airlines
Dec 10
ORD9:53 amChicago O'Hare Intl
4h 37m
SAN12:30 pmSan Diego
Dec 18
SAN3:03 pmSan Diego
4h 26m
ORD9:29 pmChicago O'Hare Intl
$165
Find similar
American Airlines
Nov 26
ORD6:10 pmChicago O'Hare Intl
4h 38m
SAN8:48 pmSan Diego
Dec 4
SAN1:22 pmSan Diego
4h 21m
ORD7:43 pmChicago O'Hare Intl
$168
Find similar
American Airlines
Dec 18
ORD9:50 amChicago O'Hare Intl
4h 33m
SAN12:23 pmSan Diego
Dec 26
SAN3:03 pmSan Diego
4h 27m
ORD9:30 pmChicago O'Hare Intl
$169
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Sun Country Air flights from United States to San Diego

Our best Sun Country Air deals on United States to San Diego flight tickets
Sun Country Air
Jan 8
MSP3:24 pmMinneapolis St Paul
3h 57m
SAN5:21 pmSan Diego
Jan 23
SAN6:19 pmSan Diego
3h 40m
MSP11:59 pmMinneapolis St Paul
$197
Find similar
Sun Country Air
Nov 16
MSP2:54 pmMinneapolis St Paul
3h 55m
SAN4:49 pmSan Diego
Nov 20
SAN5:55 pmSan Diego
3h 41m
MSP11:36 pmMinneapolis St Paul
$227
Find similar
Sun Country Air
Nov 12
MSP10:30 amMinneapolis St Paul
3h 58m
SAN12:28 pmSan Diego
Nov 14
SAN5:55 pmSan Diego
3h 41m
MSP11:36 pmMinneapolis St Paul
$237
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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 6, 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

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Thu 12/11

5:43 pm-7:15 pm

Nonstop2h 32m

San Diego

Mon 12/15

6:34 am-10:12 am

Nonstop2h 38m

$58

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Wed 11/12

10:20 am-11:52 am

Nonstop2h 32m

San Diego

Tue 11/25

8:56 am-12:32 pm

Nonstop2h 36m

$63

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 12/3

9:57 pm-11:30 pm

Nonstop1h 33m

San Diego

Tue 12/9

6:15 am-8:06 am

Nonstop1h 51m

$77

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Wed 12/3

7:00 am-8:39 am

Nonstop1h 39m

San Diego

Sun 12/7

6:15 am-8:06 am

Nonstop1h 51m

$96

DenverSan Diego

DEN - SAN

DENSAN

Denver Intl

Mon 12/22

9:55 pm-11:25 pm

Nonstop2h 30m

San Diego

Wed 12/24

10:30 am-3:55 pm

1 stop4h 25m

$122

San FranciscoSan Diego

SFO - SAN

SFOSAN

San Francisco

Fri 12/5

7:40 am-9:10 am

Nonstop1h 30m

San Diego

Sun 12/7

7:00 am-8:45 am

Nonstop1h 45m

$124

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 12/10

9:53 am-12:30 pm

Nonstop4h 37m

San Diego

Thu 12/18

3:03 pm-9:29 pm

Nonstop4h 26m

$165

ChicagoSan Diego

ORD - SAN

ORDSAN

Chicago O'Hare Intl

Wed 11/26

6:10 pm-8:48 pm

Nonstop4h 38m

San Diego

Thu 12/4

1:22 pm-7:43 pm

Nonstop4h 21m

$168

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Mon 11/24

7:10 am-10:06 am

Nonstop2h 56m

San Diego

Sat 12/6

5:15 pm-8:29 pm

Nonstop3h 14m

$178

SeattleSan Diego

SEA - SAN

SEASAN

Seattle/Tacoma Intl

Fri 12/19

7:10 am-10:08 am

Nonstop2h 58m

San Diego

Wed 12/24

6:30 am-9:53 am

Nonstop3h 23m

$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 September, then departing from United States during the month January is also very affordable. Most momondo users find prices during this month for around $333.

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 $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 $311 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
8,115 reviews
Search Spirit Airlines flights
FrontierPriceFrom $36Free CancellationRating
5.8
3,116 reviews
Search Frontier flights
Hawaiian AirlinesPriceFrom $38Free CancellationRating
7.8
2,804 reviews
Search Hawaiian Airlines flights
United AirlinesPriceFrom $57Free CancellationRating
7.4
9,003 reviews
Search United Airlines flights
Alaska AirlinesPriceFrom $58Free CancellationRating
8.0
11,243 reviews
Search Alaska Airlines flights
SouthwestPriceFrom $77Free CancellationRating
8.0
4,240 reviews
Search Southwest flights
DeltaPriceFrom $77Free CancellationRating
7.9
8,001 reviews
Search Delta flights
JetBluePriceFrom $162Free CancellationRating
7.2
2,907 reviews
Search JetBlue flights
American AirlinesPriceFrom $183Free CancellationRating
7.2
11,040 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.

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