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$15 Cheap Flights to San Diego

Compare San Diego flights across hundreds of providers

Find the cheapest month or even day of the year to fly to San Diego

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Flight deals to San Diego

Looking for a cheap last-minute deal or the best round-trip flight to San Diego? If you want to travel to San Diego next month, round-trip fares start from $43. Find the lowest prices on one-way and round-trip tickets right here.
San Diego.$43 per passenger.Departing Wed, Apr 15, returning Sat, Apr 18.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Wed, Apr 15, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Sat, Apr 18, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $43, select.
San Diego.$44 per passenger.Departing Sat, May 2, returning Mon, May 4.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Sat, May 2, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Mon, May 4, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $44, select.
San Diego.$45 per passenger.Departing Wed, Apr 29, returning Mon, May 4.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Phoenix Sky Harbor on Wed, Apr 29, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Mon, May 4, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $45, select.
San Diego.$56 per passenger.Departing Mon, Jun 1, returning Wed, Jun 3.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Denver International on Mon, Jun 1, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Wed, Jun 3, arriving in Denver International.Price includes taxes and charges.From $56, select.
San Diego.$66 per passenger.Departing Fri, May 29, returning Tue, Jun 2.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from San Francisco International on Fri, May 29, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Tue, Jun 2, arriving in San Francisco International.Price includes taxes and charges.From $66, select.
San Diego.$97 per passenger.Departing Thu, Jul 9, returning Mon, Jul 13.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from San Francisco International on Thu, Jul 9, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Mon, Jul 13, arriving in San Francisco International.Price includes taxes and charges.From $97, select.
San Diego.$97 per passenger.Departing Mon, Jun 22, returning Tue, Jul 7.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from San Francisco International on Mon, Jun 22, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Tue, Jul 7, arriving in San Francisco International.Price includes taxes and charges.From $97, select.
San Diego.$98 per passenger.Departing Wed, Jul 29, returning Mon, Aug 3.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from San Francisco International on Wed, Jul 29, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Mon, Aug 3, arriving in San Francisco International.Price includes taxes and charges.From $98, select.
San Diego.$98 per passenger.Departing Fri, Aug 21, returning Mon, Aug 24.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from San Francisco International on Fri, Aug 21, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Mon, Aug 24, arriving in San Francisco International.Price includes taxes and charges.From $98, select.
San Diego.$103 per passenger.Departing Sat, Sep 5, returning Tue, Sep 8.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from San Francisco International on Sat, Sep 5, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Tue, Sep 8, arriving in San Francisco International.Price includes taxes and charges.From $103, select.
San Diego.$122 per passenger.Departing Mon, Mar 30, returning Tue, Mar 31.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Harry Reid on Mon, Mar 30, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Tue, Mar 31, arriving in Harry Reid.Price includes taxes and charges.From $122, select.
San Diego.$144 per passenger.Departing Thu, May 14, returning Wed, Aug 19.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Dallas Fort Worth International on Thu, May 14, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departing from San Diego International on Wed, Aug 19, arriving in Dallas Fort Worth International.Price includes taxes and charges.From $144, select.
San Diego.$147 per passenger.Departing Sat, Mar 28, returning Mon, Apr 20.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Phoenix Sky Harbor on Sat, Mar 28, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departing from San Diego International on Mon, Apr 20, arriving in Phoenix Sky Harbor.Price includes taxes and charges.From $147, select.
San Diego.$150 per passenger.Departing Tue, Mar 31, returning Sat, Apr 4.Round-trip flight with Frontier Airlines.Outbound direct flight with Frontier Airlines departing from Harry Reid on Tue, Mar 31, arriving in San Diego International.Inbound direct flight with Frontier Airlines departing from San Diego International on Sat, Apr 4, arriving in Harry Reid.Price includes taxes and charges.From $150, select.
San Diego.$157 per passenger.Departing Thu, Aug 27, returning Tue, Sep 1.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Dallas Fort Worth International on Thu, Aug 27, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departing from San Diego International on Tue, Sep 1, arriving in Dallas Fort Worth International.Price includes taxes and charges.From $157, select.
San Diego.$158 per passenger.Departing Mon, Apr 20, returning Sat, Jun 20.Round-trip flight with Frontier Airlines.Outbound indirect flight with Frontier Airlines, departing from Santa Ana John Wayne on Mon, Apr 20, arriving in San Diego International.Inbound indirect flight with Frontier Airlines, departing from San Diego International on Sat, Jun 20, arriving in Santa Ana John Wayne.Price includes taxes and charges.From $158, select.

Find the cheapest time to fly to San Diego

Flexible on travel dates? Find the cheapest month – or even day – to fly to San Diego.
Mar
from $122
Apr
from $43
May
from $44
Jun
from $56
Jul
from $97
Aug
from $98
Sep
from $103
Oct
from $190
Nov
from $189
Dec
from $239
Jan
from $216
Feb
from $190

Airports in San Diego

Compare routes to San Diego below. You may find an airport to fly into that's cheaper, faster, or easier.

San Diego International

3 miles from central San Diego
ClosestCheapest
from $43
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McClellan – Palomar

30 miles from central San Diego
from $278
Search flights

Direct flights to San Diego

Frequently asked questions

The average flight time to San Diego is 5 hours and 34 minutes. We've calculated this based on journeys from Washington, D.C..
There are 2 airports in San Diego: San Diego International and McClellan – Palomar.
Southwest Airlines, Alaska Airlines, American Airlines, SkyWest Airlines, United, Horizon Air, Hawaiian Airlines and Qatar Airways all fly non-stop to San Diego.
The cheapest month to fly to San Diego is usually April.
We show every price from over 1,200 airlines and travel agents, comparing them all so you don’t have to. If you know you want to fly to San Diego but you’re not ready to book, set up a Price Alert. We’ll track prices for you, and let you know when they rise or fall.
Yes – you can fly direct to San Diego International Airport or McClellan – Palomar Airport, and the average flight time is 3 hours and 28 minutes.
The best price we found for a round-trip flight to San Diego is $43. This is an estimate based on information collected from different airlines and travel providers over the last 4 days and is subject to change and availability.
The cheapest airport near San Diego is San Diego International – which is 2.5 miles away from the center of San Diego. We've found flights to this airport from $43.
After crunching the numbers on our flight calendar, we found that the cheapest date to fly to San Diego is Wednesday, April 15, 2026.
We crunched all the numbers in our flight calendar, and it looks like the cheapest time to book a flight to San Diego is around 40 days in advance, so don’t leave your flight to the last minute.
The average temperature in San Diego in March is around 58°F. The warmest month in San Diego is typically August, which averages 83°F. The coolest month is December, with temperatures averaging 49°F. The rainiest month is February, and it usually rains the least in June.
Currently, Frontier Airlines offers the cheapest flight tickets to San Diego.

Discover San Diego

How to find cheap flights to San Diego

  • The lowest price we've found for a one-way flight to San Diego is $15. A return fare starts at $43.

  • Monitor fares easily with Price Alerts delivered right to your inbox or app. Just sign up for these automatic notifications and book at the perfect time, every time.

  • The earlier you book, the better. You might even be able to score some incredible early bird deals for your flight.

  • Select 'Add nearby airports' when searching to give you a better shot at finding cheap flights to San Diego. This will give you more choices for where you take off and land, along with different fares.

  • Indirect routes usually cost less, so consider taking a flight with a stop. Just uncheck the 'Direct flights' box when searching for your tickets.

Best time to go to San Diego

  • If your travel dates are flexible, use the 'Whole month' tool. It'll help you find the cheapest month or day to fly.

  • To experience the city at its busiest, book your flights for July. Traveling during peak periods typically means there's more to see and do than at other times of the year.

  • May is the quietest month to travel if you want a more relaxed pace. There's also a good chance you'll find cheaper prices on plane tickets to San Diego then.

  • With averages of between 63ºF and 82ºF, August is when San Diego is at its warmest. Plan your visit around your weather preferences to make the most of your time here.

  • February has the lowest temperatures, ranging from about 45ºF to 73ºF.

  • June is the driest month in San Diego. You can leave your raincoat at home and enjoy clearer skies.

Traveling to San Diego: what you need to know

  • There are a few airports to consider when organizing your San Diego flight. Browse the options for jetting into San Diego International Airport (SAN) or McClellan-Palomar Airport (CLD).

  • Most travelers arrive through San Diego International Airport (SAN), the main entry point to the city.

  • Avoid the layovers and travel to your destination in a single hop. Book a direct flight to San Diego with one of these popular airlines:

  • When you touch down in San Diego, you'll be in the UTC-7 timezone.

  • Once you've booked your ticket, choose a stay that fits seamlessly into your travel plans. Here are some comfy hotels to put on your short list:

Getting to central San Diego from San Diego International Airport (SAN)

  • SAN, the city's main gateway, is located about 3 miles from central San Diego.

  • If you're ride-sharing or taking a cab after your flight to San Diego, it'll take around 10 minutes to reach the center.

  • Expect the journey to take roughly 20 minutes when using public transport.

  • Take your pick of comfy hotels near San Diego International Airport. Check in and put your feet up at one of these after your flight to San Diego:

  • Eager to hit the road without delay? You can book a car rental at SAN with trusted suppliers such as Thrifty, Dollar and Budget. Hop into the driver's seat and get ready to explore San Diego and beyond.

San Diego highlights

  • Put these major attractions on your must-do list after hopping off your flight to San Diego:

    • San Diego Zoo: Around 2 miles north of the city center, this landmark is a classic place to start your sightseeing around the city.

    • Fashion Valley Shopping Center: You'll discover this shopping area roughly 4 miles north of the center. Do a little spending here in between seeing the sights of San Diego.

    • USS Midway Museum: Take on this landmark next. Around 1 mile west of the city center, it's worth checking out to get the full San Diego experience.

Explore more of the United States

  • There are plenty more places to explore in the United States, starting with Los Angeles. Hollywood Sign, Griffith Observatory and Hollywood Bowl are must-visits in this city, which is about 110 miles northwest of San Diego. Los Angeles International Airport (LAX) is the most convenient airport for Los Angeles.

  • Long Beach is another standout destination in the United States and is roughly 95 miles northwest of San Diego. Get right to the good parts at attractions like Queen Mary, The Queen Mary and Museum of Latin American Art.

  • About 90 miles northwest of San Diego, Anaheim is worth a detour. A few great reasons to visit include Disneyland Park, Disney California Adventure Park and Disneyland/California Adventure.

Complete your trip with a San Diego car rental

  • Thinking of renting a car in the city? Browse the car rentals in San Diego and get behind the wheel when you're ready. Compare rates in one place to find the ideal match after you've booked your hotel and cheap flight to San Diego.

More travel options

Prices shown on this page are estimated lowest prices only. Found in the last 45 days.