HomeSearch by dateVacation packagesHotelsFlight dealsCar rentalTravel tips & news
San Diego

$83+ Cheap flights from Baltimore to San Diego (BWI - SAN)

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 10/1. Fares are subject to change and may not be available on all flights or dates of travel.
BWI — SAN
oct. 17 — oct. 241
vie. 10/17
vie. 10/24
1 adult, Economy
We work with more than 300 partners to bring you better travel deals

Find cheap flights from Baltimore to San Diego with Cheapflights

1. Tell us where you want to go

Enter your travel information like dates, passengers, trip type (one-way or round trip), and preferred cabin class then click “Find deals”

2. Select your favorite providers

We find the providers serving your travel needs. Choose up to four travel providers to compare side-by-side for flights, hotels, or car rentals.

3. Compare prices and book

Review each provider’s pricing and select the best option for you! Book through your favorite provider’s website for a seamless experience.

Cheapflights Tip: The best prices from Baltimore/Washington to San Diego are usually found in July or May, booked 79 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Baltimore to San Diego

Discover tips and strategies to find the most affordable flight options for your journey from Baltimore (BWI) to San Diego (SAN). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated septiembre 17, 2025.

Round-trip from

$169
(Priceline)

One-way from

$83
(Priceline)

Popular in

December

Cheapest in

July

Average price

$396
From Baltimore/Washington to San Diego
Search Deals
One-way flight from Baltimore/Washington to San Diego
Search Deals
Highest demand for flights based on searches. 7% potential increase in price ($35 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 2% potential price decrease ($9 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in September 2025
Search Deals

Find flight deals from Baltimore to San Diego

Cheapest flights from Baltimore to San Diego
Explore the most affordable flight options available from Baltimore to San Diego. Find the lowest fares from popular airlines and budget airlines, with prices last updated on septiembre 17, 2025.

This Priceline deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
lun. 10/612:53 pmBWI - SAN
1 stop8h 01mFrontier
vie. 10/107:43 pmSAN - BWI
1 stop11h 40mFrontier
Deal found 9/15$169
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 11/14:12 pmBWI - SAN
1 stop7h 55mUnited Airlines
sáb. 11/89:00 amSAN - BWI
1 stop7h 21mUnited Airlines
Deal found 9/15$180
This Booking.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/246:29 pmBWI - SAN
1 stop21h 59mFrontier
dom. 10/267:23 pmSAN - BWI
1 stop11h 55mFrontier
Deal found 9/15$184
This United Airlines deal was found by Cheapflights users on 9/14. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/227:28 pmBWI - SAN
1 stop7h 13mUnited Airlines
sáb. 10/256:53 amSAN - BWI
1 stop9h 34mUnited Airlines
Deal found 9/14$185
This American Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure American Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/115:00 amBWI - SAN
1 stop7h 09mAmerican Airlines
sáb. 10/1811:46 amSAN - BWI
1 stop7h 08mAmerican Airlines
Deal found 9/15$186
This Priceline deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Priceline is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/312:53 pmBWI - SAN
1 stop8h 23mFrontier
lun. 10/66:35 amSAN - BWI
1 stop8h 07mFrontier
Deal found 9/15$188
This United Airlines deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure United Airlines is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
sáb. 10/2510:10 amBWI - SAN
1 stop7h 49mUnited Airlines
mié. 10/2911:02 amSAN - BWI
2 stops8h 55mUnited Airlines
Deal found 9/15$190
This Booking.com deal was found by Cheapflights users on 9/16. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
jue. 11/139:58 pmBWI - SAN
1 stop23h 34mFrontier
dom. 11/167:29 pmSAN - BWI
1 stop18h 40mFrontier
Deal found 9/16$191
This Kiwi.com deal was found by Cheapflights users on 9/15. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
vie. 10/246:29 pmBWI - SAN
1 stop8h 21mFrontier
lun. 10/276:41 amSAN - BWI
1 stop8h 03mFrontier
Deal found 9/15$192
This Kiwi.com deal was found by Cheapflights users on 9/17. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
mié. 10/157:50 amBWI - SAN
1 stop16h 30mMultiple Airlines
mié. 10/228:00 amSAN - BWI
1 stop17h 30mMultiple Airlines
Deal found 9/17$197

Cheapflights Fare Finder

 
Customize your flight search to find flights from Baltimore 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, Cheapflights users made 2,558,603 searches. Data last updated septiembre 17, 2025.
Use the filters below to find and compare flights from Baltimore to San Diego that are best for you.

Fly from

Baltimore

Fly to

San Diego

Route

Depart

Return

Price

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

mié. 10/22

7:28 pm-11:41 pm

1 stop7h 13m

San Diego

sáb. 10/25

6:53 am-7:27 pm

1 stop9h 34m

$185

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

mié. 11/5

10:10 am-3:00 pm

1 stop7h 50m

San Diego

mar. 11/18

9:00 am-9:24 pm

2 stops9h 24m

$190

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

sáb. 11/8

7:25 pm-10:15 pm

Nonstop5h 50m

San Diego

mié. 11/12

7:10 am-5:05 pm

1 stop6h 55m

$229

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

vie. 10/31

6:35 pm-12:13 am

1 stop8h 38m

San Diego

lun. 11/3

8:40 pm-7:56 am

1 stop8h 16m

$229

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

jue. 11/13

6:05 am-12:10 pm

1 stop9h 05m

San Diego

mar. 11/18

6:40 am-6:10 pm

2 stops8h 30m

$234

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

sáb. 10/18

7:55 am-10:35 am

Nonstop5h 40m

San Diego

vie. 10/24

6:00 pm-5:00 am

1 stop8h 00m

$243

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

mié. 10/29

6:50 am-9:30 am

Nonstop5h 40m

San Diego

sáb. 11/1

8:30 am-8:05 pm

1 stop8h 35m

$247

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

mié. 10/22

8:35 pm-11:10 pm

Nonstop5h 35m

San Diego

sáb. 10/25

6:35 am-6:15 pm

1 stop8h 40m

$247

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

mar. 10/21

5:00 pm-9:25 pm

1 stop7h 25m

San Diego

mié. 10/22

6:35 am-2:35 pm

Nonstop5h 00m

$247

BaltimoreSan Diego

BWI - SAN

BWISAN

Baltimore/Washington

sáb. 11/1

6:05 pm-8:35 pm

Nonstop5h 30m

San Diego

mié. 11/5

6:40 am-6:10 pm

2 stops8h 30m

$248

Flights are sorted by cheapest round-trip flights first.

Deals found on 9/15

Showing 1-10 of 17 results
1
2

The best insider tips for Baltimore to San Diego flights

Snippets provided in this section are AI-generated based on a summarization of Cheapflights-commissioned articles. The articles are presented as-is, for general informational purposes only, and may not be up-to-date. The opinions contained in the articles are original to the author and reflect their authentic experience, which may vary significantly from the experience of others.
Cheapflights partnered with top experts to bring you the best recommendations for your Baltimore to San Diego trip
Airports
BWI

For early morning flights, arrive 20-30 minutes early to navigate busy security lines efficiently.

Read more about BWIby Emily Zemler
SAN

Use the free San Diego Flyer shuttle for convenient transport between SAN and Old Town Transit Center.

Read more about SANby Blane Bachelor
Our travel experts
Blane Bachelor

Blane Bachelor

Expert on SAN

Blane Bachelor

Blane Bachelor

Blane Bachelor is a journalist and editor specializing in travel and aviation who writes regularly for top global outlets. Born and raised in Florida, Blane has worked and lived in four countries, including the Netherlands, where she’s currently based with her family. Her favorite way to get to know a new destination is by running or riding a bike around town – or hearing a spooky ghost story about local history. She will always choose the window seat.

Read more
Emily Zemler

Emily Zemler

Expert on BWI

Emily Zemler

Emily Zemler

Emily is a freelance writer and book author based in London covering entertainment and travel. Her work has appeared in Los Angeles Times, Observer, and Conde Nast Traveler She has ventured to more than 40 countries and all seven continents, always in search of a great art museum. She has written extensively about hotels, luxury travel, and aviation.

Read more

Best time to book a flight from Baltimore to San Diego

Have a flexible travel schedule? Discover the best time to fly to San Diego from Baltimore with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Baltimore to San Diego

How far ahead should I book a flight from Baltimore to San Diego?

Use this chart to determine the optimal time to book a round-trip flight from Baltimore to San Diego. Price data was last updated on September 12, 2025.

Booking 79 days in advance of your planned departure date is, on average, the best time to get cheap flights from Baltimore to San Diego. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Baltimore to San Diego?

Currently, August is the cheapest month in which you can book a flight from Baltimore to San Diego (average of $286). Flying from Baltimore to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

What is the cheapest time of day to fly from BWI to SAN?

Find hourly flight availability from Baltimore to San Diego. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated septiembre 17, 2025.

It’s typically best to fly out from Baltimore to San Diego in the evening. Doing so could potentially save you 29% on the flight price compared to flying at noon, which is usually more expensive.

What is the cheapest day to fly from Baltimore to San Diego?

Use this chart to determine the cheapest time to fly round-trip from Baltimore to San Diego. Price data was last updated on September 14, 2025.

Travelers seeking maximum savings on their Baltimore to San Diego flight should consider departing on Saturday afternoons when fares are most often at their lowest. Friday at noon flights should be avoided if possible as fares are typically the most expensive at this time.

Reviews of airlines servicing San Diego

Get insights into the airlines that provide service to San Diego. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to San Diego. Reviews last updated septiembre 17, 2025.
See what other customers who have flown with Southwest, Delta, and United Airlines from Baltimore to San Diego have to say. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Southwest
8.0
Very good
4,242 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Delta
8.0
Very good
7,961 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
United Airlines
7.4
Good
8,926 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
American Airlines
7.2
Good
10,000 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.
Spirit Airlines
6.3
Okay
8,023 reviews
Southwest
8.0
Very good
4,242 reviews

Entertainment

7.5

Overall

8.0

Boarding

8.1

Comfort

8.0

Crew

8.6

Food

7.0

Reviews

1 / 20
8.0
Excellent

Walter,Aug 2025

OAK - SAN

Dozens of flights and I've never seen a row's beverages forgotten. I even went back and asked the attendant to check on them and nothing. I really hope it didn't have something to do with the Black mother with her kid in the row. Otherwise it was a typical Southwest flight, rapid boarding, tolerable leg room.

Related info for your journey

Find useful and relevant information for your journey from Baltimore to San Diego. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airports do I use to fly from Baltimore to San Diego?

    Booking a flight from Baltimore/Washington (BWI) to San Diego (SAN) is your only option if you wish to fly from Baltimore to San Diego. On a typical day, there are 3 flights from Baltimore/Washington to San Diego, all of which are around 5h 25m for a nonstop flight. You can also purchase a plane ticket from 7 airlines when you book a flight from Baltimore/Washington to San Diego.

  • How popular is this Baltimore to San Diego flight route?

    Within the past month, 4 users have taken a look at flights from Baltimore/Washington to San Diego.

  • How long is the flight from Baltimore to San Diego?

    Departing from Baltimore to San Diego will take you 5h 50m. The distance from Baltimore to San Diego is about 2289 mi. Both multi-stop and nonstop flights can be found to your destination and back.

  • What are the cheapest airlines flying from Baltimore to San Diego round-trip?

    Our cheapest airline available from Baltimore to San Diego is Frontier. Our recent data shows that you can find tickets from as low as $130 on this airline. Additional options worth looking into are Spirit Airlines and Alaska Airlines, starting at $154 and $198 round-trip. You may be able to fly from Baltimore to San Diego for 70% less than the average price by searching for these airlines.

  • What are the cheapest flights from Baltimore to San Diego?

    Looking at all options, your cheapest flight can be booked for $128. While the most popular route (Baltimore/Washington - San Diego) can be booked for $180 on average, our data indicates $276 when flying from Baltimore to San Diego.

  • Can I find deals for flights from Baltimore to San Diego that include hotel bookings?

    Yes. In addition to deals on Baltimore to San Diego flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Baltimore to San Diego?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Baltimore to San Diego.

  • Can I find deals for business class flights from Baltimore to San Diego?

    Yes. Cheapflights offers flight deals from Baltimore to San Diego by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Baltimore to San Diego?

    Currently, August is the cheapest month in which you can book a flight from Baltimore to San Diego (average of $286). Flying from Baltimore to San Diego in March is currently the most expensive (average of $366). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Traveling to a place near San Diego?

Book flights to San Diego if you plan to visit one of these locations
El Cajon
Chula Vista
La Mesa
Poway
Lemon Grove
Coronado
Imperial Beach
National City

Browse thousands of different options on Cheapflights for your next trip

Toggle through the tabs below to find thousands of options on Cheapflights for your next trip.

Alternative routes for Baltimore to San Diego

See prices for flight routes from nearby airports that may be better suited for you.
Reagan-National to Los Angeles flights
Dulles Intl to Los Angeles flights
Dulles Intl to Las Vegas flights
Reagan-National to Las Vegas flights
Philadelphia to Las Vegas flights
Baltimore to San Francisco flights
Baltimore to Las Vegas flights
Reagan-National to San Francisco flights
Baltimore to Los Angeles flights
Dulles Intl to San Francisco flights
Philadelphia to Los Angeles flights
Dulles Intl to San Diego flights
Reagan-National to San Diego flights
Philadelphia to San Francisco flights
Baltimore to Burbank flights
Dulles Intl to Ontario flights
Baltimore to Ontario flights
Reagan-National to Ontario flights
Baltimore to Santa Ana flights
Philadelphia to San Diego flights
Philadelphia to Ontario flights
Dulles Intl to San Jose flights
Dulles Intl to Sacramento flights
Reagan-National to Santa Ana flights
Dulles Intl to Santa Ana flights
Reagan-National to San Jose flights
Baltimore to San Jose flights
Philadelphia to Santa Ana flights
Dulles Intl to Palm Springs flights
Baltimore to Oakland flights
Baltimore to Sacramento flights
Reagan-National to Palm Springs flights
Reagan-National to Sacramento flights
Reagan-National to Oakland flights
Baltimore to Palm Springs flights
Dulles Intl to Oakland flights
Philadelphia to Palm Springs flights
Dulles Intl to Reno flights
Philadelphia to San Jose flights
Dulles Intl to Burbank flights
Philadelphia to Burbank flights
Reagan-National to Reno flights
Philadelphia to Sacramento flights
Dulles Intl to Long Beach flights
Philadelphia to Reno flights
Dulles Intl to Fresno flights
Reagan-National to Burbank flights
Philadelphia to Oakland flights
Baltimore to Reno flights

Top 7 airlines flying from Baltimore to San Diego

Discover the top 7 airlines that operate flights from Baltimore to San Diego. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated septiembre 17, 2025.
AirlineCheapestAverageFlexibilityOn-time
FrontierCheapest$130Average$258FlexibilityNo cancel feeOn-time62%
Spirit AirlinesCheapest$154Average$299FlexibilityNo cancel feeOn-time65%
Alaska AirlinesCheapest$198Average$348FlexibilityNo cancel feeOn-time75%
American AirlinesCheapest$260Average$480FlexibilityNo cancel feeOn-time71%
DeltaCheapest$276Average$441FlexibilityNo cancel feeOn-timeN/A
United AirlinesCheapest$302Average$475FlexibilityNo cancel feeOn-time69%
SouthwestCheapest$307Average$486FlexibilityNo cancel feeOn-time63%

100% Free

Cheapflights is completely free to use, so you can start saving the moment you arrive.

Book with Flexibility

Our users can plan ahead with confidence and find flights with no change fees

Travel Smart

Millions of people come to us for their flight needs every year. We help make travel planning easy by providing useful insights and data-driven graphs that can inform your decisions.